TECHNICAL & SERVICE MANUAL - MyLinkDrivemeus1.mylinkdrive.com/files/PUMY-P60NKMU1_-BS_Service...6...

PARTS CATALOG (OCB613)

CONTENTS 1. SAFETY PRECAUTION .................................... 2 2. OVERVIEW OF UNITS ...................................... 5 3. SPECIFICATIONS ........................................... 10 4. DATA .................................................................11 5. OUTLINES AND DIMENSIONS ...................... 20 6. WIRING DIAGRAM .......................................... 21 7. NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION ...... 22 8. TROUBLESHOOTING ..................................... 32 9. ELECTRICAL WIRING .................................. 10710. REFRIGERANT PIPING TASKS ....................11211. DISASSEMBLY PROCEDURE .......................116

No. OCH613

HFCutilized

R410A

May 2016

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

Note:• This service manual describes

technical data of the outdoor units only.

[Service Ref.]

PUMY-P60NKMU1

PUMY-P60NKMU1-BS

<Outdoor unit>[Model name]PUMY-P60NKMU1

Salt proof model

PUMY-P60NKMU1-BS

TECHNICAL & SERVICE MANUAL

OUTDOOR UNIT

Model name indication

2

Cautions for units utilizing refrigerant R410A1-1. CAUTIONS RELATED TO NEW REFRIGERANT

Use new refrigerant pipes.

Store the piping indoors, and both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.)

Avoid using thin pipes.

Charge refrigerant from liquid phase of gascylinder.If the refrigerant is charged from gas phase, composition change may occur in refrigerant and the efficiency will be lowered.

Do not use refrigerant other than R410A.

If other refrigerant (R22, etc.) is used, chlorine in refrige-rant can cause deterioration of refrigerant oil, etc.

Use a vacuum pump with a reverse flow check valve.Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil, etc.

Use the following tools specifically designed for use with R410A refrigerant.The following tools are necessary to use R410A refrigerant.

Handle tools with care.

If dirt, dust or moisture enters into refrigerant cycle, that cancause deterioration of refrigerant oil or malfunction of com-pressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigera-nt will change and the efficiency will be lowered.

Flare tool

Electronic refrigerant charging scale

Vacuum pump adaptorSize adjustment gauge

Gauge manifold

Torque wrenchGas leak detectorCharge hose

Tools for R410A

Contamination inside refrigerant piping can cause deterio-ration of refrigerant oil, etc.

If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of com-pressor.

If large amount of mineral oil enters, that can cause deterio-ration of refrigerant oil, etc.

Make sure that the inside and outside of refrige-rant piping is clean and it has no contaminantssuch as sulfur, oxides, dirt, shaving particles, etc,which are hazard to refrigerant cycle.In addition, use pipes with specified thickness.

The refrigerant oil applied to flare and flangeconnections must be ester oil, ether oil or alkylbenzene oil in a small amount.

Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact witha flame, poisonous gases will be released.

Use the specified refrigerant only.

Never use any refrigerant other than that specified.Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of.Correct refrigerant is specified in the manuals and on the spec labels provided with our products.We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to follow the instructions.

1 SAFETY PRECAUTION

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Electronic weighing scale

Unit

[3] Service tools Use the below service tools as exclusive tools for R410A refrigerant.

[1] Cautions for service (1) Perform service after recovering the refrigerant left in unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. (4) If moisture or foreign matter might have entered the refrigerant piping during service, ensure to remove them.

[2] Additional refrigerant charge When charging directly from cylinder (1) Check that cylinder for R410A on the market is a syphon type. (2) Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

Although "-BS" model has been designed to be resistant to salt damage, observe the following precautions to maintain the performance of the unit.(1) Avoid installing the unit in a location where it will be exposed directly to seawater or sea breeze.(2) If the cover panel may become covered with salt, be sure to install the unit in a location where the salt will be washed away by rainwater. (If a sunshade is installed, rainwater may not clean the panel.)(3) To ensure that water does not collect in the base of the outdoor unit, make sure that the base is level, not at angle. Water collecting in the base of the outdoor unit could cause rust.(4) If the unit is installed in a coastal area, clean the unit with water regularly to remove any salt build-up.(5) If the unit is damaged during installation or maintenance, be sure to repair it.(6) Be sure to check the condition of the unit regularly.(7) Be sure to install the unit in a location with good drainage.

1-2. PRECAUTIONS FOR SALT PROOF TYPE "-BS" MODEL

No. Tool name Specifications1 Gauge manifold · Only for R410A

· Use the existing fitting specifications. (UNF1/2)· Use high-tension side pressure of 768.7 PSI [5.3 MPa.G] or over.

2 Charge hose · Only for R410A· Use pressure performance of 738.2 PSI [5.09MPa.G] or over.

3 Electronic scale —

4 Gas leak detector · Use the detector for R134a, R407C or R410A.5 Adaptor for reverse flow check · Attach on vacuum pump.6 Refrigerant charge base —

7 Refrigerant cylinder · Only for R410A · Top of cylinder (Pink)· Cylinder with syphon

8 Refrigerant recovery equipment —

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Cautions for refrigerant piping workNew refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working pressure of R410A is 1.6 times higher than that of R22, their sizes of flared sections and flare nuts are different.1 Thickness of pipes

Because the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness shown below. (Never use pipes of 7/256 in [0.7 mm] or below.)

2 Dimensions of flare cutting and flare nutThe component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that, R410A is a refrigerant, which has higher risk of leakage because its working pressure is higher than that of other refrigerants. Therefore, to enhance airtightness and intensity, flare cutting dimension of copper pipe for R410A has been specified sepa-rately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A also has partly been changed to increase intensity as shown below. Set copper pipe correctly referring to copper pipe flaring dimensions for R410A below. For 1/2 and 5/8 inch, the dimension B changes. Use torque wrench corresponding to each dimension.

3 Tools for R410A (The following table shows whether conventional tools can be used or not.)

1/43/81/25/83/4

6.359.5212.7015.8819.05

1/32 [0.8] 1/32 [0.8] 1/32 [0.8] 5/128 [1.0]

—

1/32 [0.8] 1/32 [0.8] 1/32 [0.8]5/128 [1.0]5/128 [1.0]

Nominaldimensions (in)

Diagram below: Piping diameter and thicknessOutside

diameter (mm)Thickness : in [mm]

R410A R22

1/43/81/25/83/4

6.359.5212.7015.8819.05

11/32-23/64 [ 9.1]1/2-33/64 [13.2]41/64-21/32 [16.6]49/64-25/32 [19.7] —

9.013.016.219.423.3


Flare cutting dimensionsOutside

diameter (mm)Dimension A ( )+0

-0.4

Unit : in [mm]

R410A R221/43/81/25/83/4

6.359.5212.7015.8819.05

43/64 [17.0] 7/8 [22.0] 1-3/64 [26.0] 1-9/64 [29.0]

17.022.024.027.036.0


Flare nut dimensionsOutside

diameter (mm)Dimension B

Unit: in [mm]

R410A R22

—

Gauge manifoldCharge hoseGas leak detectorRefrigerant recovery equipmentRefrigerant cylinderApplied oil

Safety charger

Charge valve

Vacuum pump

Flare tool

BenderPipe cutterWelder and nitrogen gas cylinderRefrigerant charging scaleVacuum gauge or thermis-tor vacuum gauge and vacuum valveCharging cylinder

Air purge, refrigerant chargeand operation checkGas leak checkRefrigerant recoveryRefrigerant chargeApply to flared section

Prevent compressor malfunction when charging refrigerant by spraying liquid refrigerantPrevent gas from blowing out when detaching charge hoseVacuum drying and airpurge

Flaring work of piping

Bend the pipesCut the pipesWeld the pipesRefrigerant chargeCheck the degree of vacuum. (Vacuum valve prevents back flow of oil and refri-gerant to thermistor vacuum gauge)Refrigerant charge

Tool exclusive for R410ATool exclusive for R410ATool for HFC refrigerantTool exclusive for R410ATool exclusive for R410AEster oil, ether oil andalkylbenzene oil (minimum amount)Tool exclusive for R410A

Tool exclusive for R410A

Tools for other refrigerants can be used if equipped with adop-ter for reverse flow checkTools for other refrigerants can be used by adjusting flaring dimensionTools for other refrigerants can be usedTools for other refrigerants can be usedTools for other refrigerants can be usedTools for other refrigerants can be usedTools for other refrigerants can be used

Tool exclusive for R410A

Tools and materials Use R410A tools Can R22 tools be used?

(Usable if equipped with adopter for reverse flow) (Usable by adjusting flaring dimension)

Can R407C tools be used?

Ester oil, ether oil: Alkylbenzene oil: minimum amount

(Usable if equipped with adopter for reverse flow) (Usable by adjusting flaring dimension)

: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.) : Tools for other refrigerants can be used under certain conditions.: Tools for other refrigerants can be used.

Dimension A

Dimension B

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2 OVERVIEW OF UNITS

2-1. Auxiliary HEATING ON/OFF CONTROL SET-UP

(1) Auxiliary heating operation controls another heat source that depends on the main system's operations,which means the interlock operation shown in "b)" will be possible.

a)

b) Different Indoor unit applications that can be applied:

(2) Outdoor unit DIPSW5-4 for auxiliary heating control:Set DIPSW5-4 when power is turned off at unit.

OFF: Disable auxiliary Heating Function (Initial setting)ON : Enable auxiliary Heating Function

Indoor unit must be R410A UL model for this function to operate.

(3) Determine required indoor fans speed during defrost mode:To set the fan speed, see the chapter referring to heater control in the indoor unit’s Technical & Service Manual.

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When the set temperature ranges overlap, the previously set pattern (1,2 or 3) has a priority.The stage 1 has the highest priority, 2 the second and then 3.

b) Based on above chart listed the sequence of operation on "On ambient decrease" Stage 1 :(TH7 = > 10:) : the outdoor unit runs in HP mode. Stage 2 :(TH7 = 10: to -25:) : the outdoor unit runs in HP mode with auxiliary heating. Stage 3 :(TH7 = < -25:) : Auxiliary heating only (Outdoor unit is OFF).

c) Based on above chart listed the sequence of operation on "On ambient increase" Stage 3 :(TH7 = < 0:) : Auxiliary heating only (Outdoor unit is OFF). Stage 2 :(TH7 = > 0: to 20:) : Auxiliary heating with outdoor unit in HP mode. Stage 1 :(TH7 = > 20:) : Outdoor unit in HP mode only.

(4) Determine fan airflow setting during indoor thermo-OFF conditions:a) These settings are done within Indoor DIPSW1-7 and DIPSW1-8, see chart below for options.b) Recommended SW1-7 OFF and SW1-8 ON will determine airflow based on "Setting on the remote controller".

Fan speed setting

Fan speed setting

OFF ON

SW1-7 SW1-8OFF OFF Very low

ON OFF Low

OFF ONSetting on

remote controller

ON ON Stopped

Auxiliary heating signal

Thermo condition

(5) Setting outdoor unit and auxiliary heat switch over temperatures.When the DIPSW 5-4 is set to "ON", the outdoor unit and the contact output operates as shown below.

a) Outdoor default setting and operations are shown below:

Stage 1Amb. decreasing - Outdoor unit HP operationAmb. increasing - Defrost : Heater contact ON signal

- Other than defrost : Contact OFF

Stage 2- Outdoor unit HP operation- Heater contact ON signal

Stage 3 - Outdoor unit OFF (Standby)- Heater contact ON signal

TH7 = Outdoor temperature a-25-C[-13-F]

b0-C

[32-F]

c10-C[50-F]

d20-C[68-F]

Setting on remote

controller

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(6) Locally procured wiringA basic connection method is shown.(i.e. interlocked operation with the electric heater with the fan speed setting on high)

Recommended circuit

CN24

CN22X+

X

Remote control Board Relay circuit AdapterIndoor unit

control boardOutdoor unit

control board

Ele

ctric

Hea

ter

pow

er s

ourc

e

ElectricHeater

Red 1

White 2

Dip switchSW5-4 "ON"

Preparations in the field Maximum cable lengthis 10 m (32ft)

Red 1

Red 2

Yello

wG

reen

FS1

FS2FS1

FS2

RS

RS

CN24

H288H

H188H

26H88H

1-phase powersupply208V, 230V/60Hz

Control board

FS1, 2 ----- Thermal fuseH1, H2 ----- Heater26H --------- Overheat protection

thermostat88H --------- Electromagnetic contactor

Wiring diagram

For relay X use the specifications given below operation coilRated voltage : 12VDCPower consumption : 0.9W or less

*Use the diode that is recommended by the relay manufacturer at both ends of the relay coil.The length of the electrical wiring for the PAC-YU24HT is 2 meters (6-1/2 ft)To extend this length, use sheathed 2-core cable.

Control cable type : CVV, CVS, CPEV or equivalent.Cable size : 0.5 mm2 to 1.25 mm2 (AWG22 to AWG16)Do not extend the cable more than 10 meters (32ft).

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2-2. UNIT CONSTRUCTION

Branching pipecomponents

Branch header (2 branches)



CMY-Y62-G-E CMY-Y64-G-E CMY-Y68-G-E

Remotecontroller

Name M-NET remote controller MA remote controller

Model number PAR-F27MEA-EPAR-U01MEDU PAR-21MAA, PAR-30/31/32MAA

Functions

• A handy remote controller for use in conjunction with the Melans centralized management system.• Addresses must be set.

• Addresses setting is not necessary.

Outdoor unit 7HPPUMY-P60NKMU1(-BS)

Applicableindoor unit

Capacity Type 06 to Type 72Number of units 1 to 12 unit

Total system wide capacity 50 to 130% of outdoor unit capacity

Decorative panel

Model

Capacity

Cassette Ceiling Ceiling Concealed

Wall Mounted

CeilingSuspended

Floor standing Multi-posit ion air handling unit4-way fl ow 1-way fl ow Exposed Concealed

PLFY-EP PLFY-P PLFY-P PMFY-P PEFY-P PKFY-P PCFY-P PFFY-P PFFY-P PVFY-PNEMU-E NEMU-E NCMU-E NBMU-E NMAU NMSU-E NHMU-E NMHSU-E NBMU-E NHMU-E NKMU-E NKMU-E NEMU-E NRMU-E NAMU-E

06 – – – – – – – – –

08 – – – – – – –

12 – – – – –

15 – – – –

18 – – – – – –

24 – – – – –

27 – – – – – – – – – – – – –

30 – – – – – – – –

36 – – – – – – – – –

48 – – – – – – – – – –

54 – – – – – – – – – – – –

72 – – – – – – – – – – – – – –

–: Not connectable: Connectable

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2-3. UNIT SPECIFICATIONS

(2) Method for identifying MULTI-S model

(1) Outdoor Unit

Indoor unit < When using Model 80 > Outdoor unit <When using model 125 >

Cooling/Heating capacity indicates the maximum value at operation under the following condition. Cooling Indoor D.B. 80°F/W.B. 67°F: [D.B. 26.7°C/W.B. 19.4°C]

Outdoor D.B. 95°F/W.B. 75°F: [D.B. 35°C/W.B. 23.9°C]Heating Indoor D.B. D.B.70°F/W.B.60°F: [D.B. 21.1°C/W.B. 15.6°C]

Outdoor D.B. 47°F/W.B. 43°F: [D.B. 8.3°C/W.B. 6.1°C]

(3) Operating temperature range

Notes: D.B. : Dry Bulb Temperature W.B. : Wet Bulb Temperature *1 50 to 115 °F [10 to 46°C] D.B. : When connecting PKFY-P06NBMU, PKFY-P08NHMU type indoor unit. *2 5 to 115°F [−15 to 46°C] D.B.: When using an optional air protect guide [PAC-SH95AG-E]. However, this condition does not apply to the indoor units listed in *1.

Service Ref. PUMY-P60NKMU1(-BS)Capacity Cooling (kBTU/h) 60.0

Heating (kBTU/h) 66.0Compressor (kW) 4.1

P L F Y - P 30 N E M U - E PU M Y - P 60 N K M U 1 - BS

PAC type

Frequencyconversioncontroller

RefrigerantR410A/R22commonness

RefrigerantR410A

NEW frequency converterone-to-many air conditioners(flexible design type)

Indicates equivalentto Cooling capacity

Indicates equivalentto Cooling capacity

Power supplyN: 208/230 V AC 60 Hz

Power supplyN: 208/230 V AC 60 Hz

L : Ceiling cassetteK : Wall-mounted typeE : Hidden skylight typeC : Ceiling suspended typeM : Ceiling cassette typeF : Floor standing type

Outdoor unitmodel type

Sub-number Sub-number

Unit model type

M-NET control

UL modelM-NET controlFrequency

conversioncontroller

Outdoor unit

MULTI-S Salt proof type

UL model

Cooling HeatingIndoor-side intake air temperature 59 to 75°F [W.B. 15 to 24°C] 59 to 81°F [D.B. 15 to 27°C]Outdoor-side intake air temperature 23 to 115°F [D.B. −5 to 46°C]*1*2 −13 to 59°F [W.B. −25 to 15°C]

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3 SPECIFICATIONSModel PUMY-P60NKMU1(-BS)Power source

208/230 V AC 60 Hz

Cooling(Nominal)

Capacity BTU/h*1 60,000Power input kW 4,680Current input 208V / 230V A 22.8 / 20.6EER BTU/h 12.8

Temp. range ofcooling

Indoor temp. W.B. 59 to 75°F [15 to 24°C]Outdoor temp. D.B. 23 to 115°F [−5 to 46°C] *3*4

Heating(Nominal)

Capacity BTU/h*2 66,000Power input kW 5,450Current input 208V / 230V A 26.6 / 24.1COP W/W 3.55

Temp. range ofheating

Indoor temp. D.B. 59 to 81°F [15 to 27°C] Outdoor temp. W.B. −13 to 59°F [−25 to 15°C]

Breaker size 40AMax. fuse size 42AMin. circuit ampacity 36AIndoor unitconnectable

Total capacity 50 to 130% of outdoor unit capacityModel/ Quantity Citymulti 06–72 / 12

Sound pressure level (measured in anechoic room)

dB <A> 58 / 59

Refrigerantpiping diameter

Liquid pipe in (mm) 3/8 (9.52)Gas pipe in (mm) 3/4 (19.05)

FAN *2 Type x Quantity Propeller Fan x 2Air fl ow rate m³/min 138

L/s 2,300cfm 4,879

Control, Driving mechanism DC controlMotor output kW 0.2+0.2External static press. 0

Compressor Type x Quantity Scroll hermetic compressor x 1Manufacture Mitsubishi Electric CorporationStarting method InverterCapacity control % Cooling: 36 to 100

Heating: 22 to 100Motor output kW 4.1Case heater kW 0Lubricant FV50S (2.3 liter)

External fi nish Galvanized Steel SheetMunsell No. 3Y 7.8/1.1

External dimension HxWxD mm 1,338 x 1,050 x 330(+25)in 52-11/16 x 41-11/ 32 x 13 (+1)

Protection devices High pressure protection High pressure Switch, High pressure SensorInverter circuit (COMP./FAN) Overcurrent detection, Overheat detection(Heat sink thermistor)Compressor Compressor thermistor, Overcurrent detectionFan motor Overheating, Voltage protection

Refrigerant Type x original charge R410A 5.1kgControl Electronic expansion valve

Net weight kg (lb) 139 (306)Heat exchanger Cross Fin and Copper tubeHIC circuit (HIC: Heat Inter-Changer) HIC circuitDefrosting method Reversed refrigerant circuitDrawing External BK01V261

Wiring BH78B813Standard attachment

Document Installation ManualAccessory Grounded lead wire x2, conduit plate

Optional parts Joint: CMY-Y62-G-EHeader: CMY-Y64/68-G-E

Remarks Unit converter

kcal/h = kW × 860BTU/h = kW × 3,412cfm = m³/min x 35.31lb = kg/0.4536

Above specifi cation data issubject to rounding variation.

*1 Nominal cooling conditions *2 Nominal heating conditionsIndoor : 80.0°F D.B/67.0°F W.B. [26.7°C D.B. /19.4°C W.B.] 70.0°F D.B./60.0°F W.B. [21.1°C D.B./15.6°C W.B.]

Outdoor : 95.0°F D.B./75.0°F W.B.[35.0°C D.B. /23.9°C W.B.] 47.0°F D.B./43.0°F W.B. [8.3°C D.B./6.1°C W.B.]Pipe length : 25 ft [7.6 m] 25 ft [7.6 m]

Level difference : 0 ft [0 m] 0 ft [0 m]

Note : Due to continuing improvement, above specifi cations may be subject to change without notice.

*3 50 to 115°F [10 to 46°C] D.B. : When connecting PKFY-P06NBMU and PKFY-P08NHMU type indoor unit.

*4 5 to 115°F [−15 to 46°C] D.B.: When using an optional air protect guide [PAC-SH95AG-E]. However, this condition does not apply to the indoor units listed in *3.

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4

Capacity of indoor unit

Model 08Model Number for indoor unit

Model Capacity 8.0

Model 06

6.0

Model 12

12.0

Model 15

15.0

Model 18

18.0

Model 24

24.0

Model 27

27.0

Model 30

30.0

Model 36

36.0

Model 48

48.0

Model 54

54.0

Model 72

72.0

DATA

0 20 40 60 80 100 120 140 160 180 200 220 240 2600.70

0.75

0.80

0.85

0.90

0.95

1.00

<Cooling>Design Condition

Outdoor Design Dry Bulb Temperature 98.6ºF (37.0ºC)Total Cooling Load 54.0 kBTU/hRoom1

Indoor Design Dry Bulb Temperature 80.6ºF (27.0ºC)Indoor Design Wet Bulb Temperature 68.0ºF (20.0ºC)Cooling Load 26.0 kBTU/h

Room2Indoor Design Dry Bulb Temperature 75.2ºF (24.0ºC)

66.2ºF (19.0ºC)Indoor Design Wet Bulb TemperatureCooling Load 28.0 kBTU/h

<Other>Indoor/Outdoor Equivalent Piping Length 100 ft

1. Cooling Calculation(1) Temporary Selection of Indoor Units

Room1PEFY-P27 27.0 kBTU/h (Rated)


(2) Total Indoor Units CapacityP27 + P30 = P57

(3) Selection of Outdoor UnitThe P60 outdoor unit is selected as total indoor units capacity is P57PUMY-P60 60.0 kBTU/h

(4) Total Indoor Units Capacity Correction CalculationRoom1

Indoor Design Wet Bulb Temperature Correction (68.0ºF) 1.02 (Refer to Figure 1)

Figure 1 Indoor unit temperature correction To be used to correct indoor unit only

Figure 2 Outdoor unit temperature correction To be used to correct outdoor unit only

Figure 3 Correction of refrigerant piping length

Room2Indoor Design Wet Bulb Temperature Correction (66.2ºF) 0.95 (Refer to Figure 1)

CT

= 56.0 kBTU/h(5) Outdoor Unit Correction Calculation

Outdoor Design Dry Bulb Temperature Correction (98.6ºF) 0.98 (Refer to Figure 2)Piping Length Correction (100 ft) 0.96 (Refer to Figure 3)Total Outdoor Unit Capacity (CTo)

Total Indoor Units Capacity (CTi)

CTo =

= 56.4 kBTU/h(6) Determination of Maximum System Capacity

Comparison of Capacity between Total Indoor Units Capacity (CTi) and Total Outdoor Unit Capacity (CTo)CTi = 56.0 < CTo = 56.4, thus, select CTi. CTx = CTi = 56.0kBTU/h

(7) Comparison with Essential LoadAgainst the essential load 54.0 kBTU/h, the maximum system capacity is 56.0 kBTU/h: Proper outdoor units have been selected.

(8) Calculation of Maximum Indoor Unit Capacity of Each RoomCTx = CTi, thus, calculate by the calculation below

Room1Indoor Unit Rating Indoor Design Temperature Correction

= 27.5 kBTU/h OK: fulfills the load 26.0 kBTU/hRoom2

Indoor Unit Rating Indoor Design Temperature Correction

= 28.5 kBTU/h OK: fulfills the load 28.0 kBTU/hGo on to the heating trial calculation since the selected units fulfill the cooling loads of Room 1, 2.

15 16 17 18 19 20 21 22 23 2459 60.8 62.6 64.4 66.2 68 69.8 71.6 73.4 75.2

0.4

0.6

0.8

1.0

1.2

Rat

io o

f coo

ling

capa

city

Indoor Temperature

[°CW.B.] [°FW.B.]

-15 -10 -5 0 5 10 15 20 25 30 35 40 450.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

Rat

io o

f coo

ling

capa

city

Outdoor Temperature

[°C D.B.] [°F W.B.]5 14 23 32 41 50 59 68 77 86 95 104 113

19.4°C (67.0°F) W.B

30 [kBTU/h]30 [kBTU/h]




Cap

acity

ratio

Piping equivalent length (ft)

Total capacity of indoor unit

4-1. SELECTION OF COOLING/HEATING UNITS

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Capacity of indoor unit

Model 08Model Number for indoor unit

Model Capacity 9.0

Model 06

6.7

Model 12

13.5

Model 15

17.0

Model 18

20.0

Model 24

27.0

Model 27

30.0

Model 30

34.0

Model 36

40.0

Model 48

54.0

Model 54

60.0

Model 72

80.0

<Heating>

Design ConditionOutdoor Design Wet Bulb Temperature 35.6ºF (2.0ºC) Total Heating Load 55.0 kBTU/hRoom1

Indoor Design Dry Bulb Temperature 69.8ºF (21.0ºC)Heating Load 26.5 kBTU/h

Room2Indoor Design Dry Bulb Temperature 73.4ºF (23.0ºC)Heating Load 28.5 kBTU/h

<Other>Indoor/Outdoor Equivalent Piping Length 100 ft

2. Heating Calculation(1) Temporary Selection of Indoor Units


34.0 kBTU/h (Rated)Room2

PEFY-P30

(2) Total Indoor Units CapacityP27 + P30 = P57

(3) Selection of Outdoor UnitThe P60 outdoor unit is selected as total indoor units capacity is P57PUMY-P60 66.0 kBTU/h

(4) Total Indoor Units Capacity Correction CalculationRoom1

Indoor Design Dry Bulb Temperature Correction (69.8ºF) 1.00 (Refer to Figure 4)Room2

Indoor Design Dry Bulb Temperature Correction (73.4ºF) 0.92 (Refer to Figure 4)

CT

= 61.3 kBTU/h

(5) Outdoor Unit Correction CalculationOutdoor Design Wet Bulb Temperature Correction (35.6ºF) 1.0 (Refer to Figure 5)Piping Length Correction (100 ft)Defrost Correction

0.96 (Refer to Figure 6)0.89 (Refer to Table 1)

Total Outdoor Unit Capacity (CTo)

Total Indoor Units Capacity (CTi)

CTo = Outdoor Unit Rating Outdoor Design Temperature Correction Piping Length Correction Defrost Correction

= 56.4 kBTU/h

(6) Determination of Maximum System CapacityComparison of Capacity between Total Indoor Units Capacity (CTi) and Total Outdoor Unit Capacity (CTo)

CTi = 61.3 > CTo = 56.4, thus, select CTo. CTx = CTo = 56.4 kBTU/h kW

(7) Comparison with Essential LoadAgainst the essential load 55.0 kBTU/h, the maximum system capacity is 56.4 kBTU/h: Proper outdoor units have been selected.

(8) Calculation of Maximum Indoor Unit Capacity of Each RoomCTx = CTo, thus, calculate by the calculation below

Room1

+= 27.6 kBTU/h OK: fulfills the load 26.5 kBTU/h

Room2

= += 28.8 kBTU/h OK: fulfills the load 28.5 kBTU/h

Completed selecting units since the selected units fulfill the heating loads of Room 1, 2.

Figure 4 Indoor unit temperature correction To be used to correct indoor unit only

Figure 5 Outdoor unit temperature correction To be used to correct outdoor unit only

Figure 6 Correction of refrigerant piping length

15 16 17 18 19 20 21 22 23 24 25 26 2759 60.8 62.6 64.4 66.2 68 69.8 71.6 73.4 75.2 77 78.8 80.6

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

Rat

io o

f hea

ting

capa

city

Indoor Temperature

[°C D.B.] [°F W.B.]

Rat

io o

f coo

ling

capa

city

[°C D.B.] [°F W.B.]

-25 -20 -15 -10 -5 0 5 10 15-4 5 14 23 32 41 50 59

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.31.4

Outdoor Temperature

21.1°C (70.0°F) W.B

0 20 40 60 80 100 120 140 160 180 200 220 240 2600.70

0.75

0.80

0.85

0.90

0.95

1.00

Cap

acity

ratio


Outdoor Intake temperature <W.B.°F (°C)> 43(6) 39(4) 36(2) 32(0) 28(−2) 25(−4) 21(−6) 18(−8) 14(−10) 5(−15) −4(−20) −13(−20)

Correction factor 1.0 0.98 0.89 0.88 0.89 0.9 0.95 0.95 0.95 0.95 0.95 0.95

OCH613

13

4-2. CORRECTING BY TEMPERATURE

15 16 17 18 19 20 21 22 23 2459 60.8 62.6 64.4 66.2 68 69.8 71.6 73.4 75.2

0.4

0.6

0.8

1.0

1.2

Rat

io o

f coo

ling

capa

city

Indoor Temperature

[°CW.B.] [°FW.B.]

-15 -10 -5 0 5 10 15 20 25 30 35 40 450.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

Rat

io o

f coo

ling

capa

city

Outdoor Temperature

19.4°C (67.0°F) W.B

[°C W.B.] [°F W.B.]5 14 23 32 41 50 59 68 77 86 95 104 113

-15 -10 -5 0 5 10 15 20 25 30 35 40 450.0

0.2

0.4

0.6

0.8

1.0

1.2

Rat

io o

f pow

er in

put

Outdoor Temperature

[°C W.B.] [°F W.B.]5 14 23 32 41 50 59 68 77 86 95 104 113

20.0°C (68.0°F) W.B.20.0°C (68.0°F) W.B. 24.0°C (75.2°F) W.B.24.0°C (75.2°F) W.B. 22.0°C (71.6°F) W.B.22.0°C (71.6°F) W.B.

19.4°C (67.0°F) W.B.19.4°C (67.0°F) W.B.18.0°C (64.4°F) W.B.18.0°C (64.4°F) W.B.

16.0°C (60.8°F) W.B.16.0°C (60.8°F) W.B.

CITY MULTI could have varied capacity at different designing temperature. Using the nominal cooling/heating capacity value and the ratio below, the capacity can be observed at various temperature.

PUMYP60

Nominal cooling capacity

BTU/h60,000

Input kW 4.68

Figure 7 Indoor unit temperature correctionTo be used to correct indoor unit capacity only

Figure 8 Outdoor unit temperature correctionTo be used to correct outdoor unit capacity only

<Cooling>

Indoor Temperature

Indoor Temperature

OCH613

14

<Heating>

15 16 17 18 19 20 21 22 23 24 25 26 2759 60.8 62.6 64.4 66.2 68 69.8 71.6 73.4 75.2 77 78.8 80.6

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

Rat

io o

f hea

ting

capa

city

Indoor Temperature

[°C W.B.] [°F W.B.]

Rat

io o

f coo

ling

capa

city

[°C W.B.] [°F W.B.]

-25 -20 -15 -10 -5 0 5 10 15-4-13 5 14 23 32 41 50 59

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

1.4

Outdoor Temperature

21.1°C (70.0°F) D.B.

-25 -20 -15 -10 -5 0 5 10 150.0

0.6

0.4

0.2

0.8

1.0

1.2

1.4

Rat

io o

f hea

ting

capa

city

Outdoor Temperature

[°C W.B.][°F W.B.]

21.1°C (70.0°F) D.B

16.0°C (60.8°F) D.B

26.0°C (78.8°F) D.B

5-4-13 14 23 32 41 50 59

Figure 9 Indoor unit temperature correctionTo be used to correct indoor unit capacity only

Figure 10 Outdoor unit temperature correctionTo be used to correct outdoor unit capacity only

PUMYP60

Nominal heatingcapacity

BTU/h66,000

Input kW 5.45

Indoor Temperature

Indoor Temperature

OCH613

15

Operation PUMY-P60NKMU1(-BS)

Operatingconditions

Ambient temperature

IndoorDB/WB

80°F / 67°F[26.7°C / 19.4°C]

70°F / 60°F[21.1°C / 15.6°C]

Outdoor 95°F / 75°F[35.0°C / 23.9°C]

47°F / 43°F[8.3°C / 6.1v]

Indoor unitNo. of connected units

Unit4

No. of units in operation 4Model - 15 × 4

PipingMain pipe

Ft (m)9.84 (3)

Branch pipe 14.76 (4.5)Total pipe length 68.90 (21)

Fan speed - HiAmount of refrigerant LBS. OZ. (kg) 19LBS. 6OZ. (8.8)

Outdoor unit

Electric current A 20.6 24.1 Voltage V 230Compressor frequency Hz 42 52

LEV opening Indoor unit Pulse 389 498 Pressure High pressure/Low pressure psi[MPa] 342/136 [2.36/0.94] 425/97 [2.93/0.67]

Temp. of eachsection

Outdoor unit

Discharge

°F[°C]

136.8 [58.2] 154.4 [68.0]Heat exchanger outlet 90.0 [32.2] 33.1 [0.6]Accumulator inlet 55.4 [13.0] 32.2 [0.1]Compressor inlet 57.2 [14.0] 30.9 [-0.6]

Indoor unitLev inlet 80.6 [27.0] 104.0 [40.0]Heat exchanger inlet 50.0 [10.0] 141.8 [61.0]

4-3. STANDARD OPERATION DATA (REFERENCE DATA)

OCH613

16

4-4. STANDARD CAPACITY DIAGRAM Before calculating the sum of total capacity of indoor units, please convert the value into the kW model capacity following the formula on "4-1-1. Method for obtaining system cooling and heating capacity".

0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.00.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.00.0

1.0

2.0

3.0

4.0

5.0

6.0

0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.00.0

5.0

10.0

15.0

20.0

25.0

30.0

208 V230 V

Cap

acity

(kB

TU/h

)

Total capacity of indoor units(kBTU/h)

Inpu

t(kW

)


Cur

rent

(A)


4-4-1. PUMY-P60NKMU1(-BS) <cooling>

OCH613

17

0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.00.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.00.0

1.0

2.0

3.0

4.0

5.0

6.0

0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.00.0

5.0

10.0

15.0

20.0

25.0

30.0

208 V230 V

Cap

acity

(kB

TU/h

)


Inpu

t(kW

)


Cur

rent

(A)


4-4-2. PUMY-P60NKMU1(-BS) <heating>

OCH613

18

4-5. CORRECTING CAPACITY FOR CHANGES IN THE LENGTH OF REFRIGERANT PIPING(1) During cooling, obtain the ratio (and the equivalent piping length) of the outdoor units rated capacity and the total in-use

indoor capacity, and find the capacity ratio corresponding to the standard piping length from Figure 11 to 13. Then multiply by the cooling capacity from Figure 7 and 8 in "4-2. CORRECTION BY TEMPERATURE" to obtain the actual capacity.

(2) During heating, find the equivalent piping length, and find the capacity ratio corresponding to standard piping length from Figure 12. Then multiply by the heating capacity from Figure 9 and 10 in "4-2. CORRECTION BY TEMPERATURE" to obtain the actual capacity.

(1) Capacity Correction Curve

0 20 40 60 80 100 120 140 160 180 200 220 240 2600.70

0.75

0.80

0.85

0.90

0.95

1.00

30 [kBTU/h]

45 [kBTU/h]

60 [kBTU/h]

78 [kBTU/h]

Cap

acity

ratio


Total capacity of indoor unitFigure 11 PUMY-P60NKMU1(-BS) <Cooling>

0 20 40 60 80 100 120 140 160 180 200 220 240 2600.70

0.75

0.80

0.85

0.90

0.95

1.00

Cap

acity

ratio


Figure 12 PUMY-P60NKMU1(-BS) <Heating>

(2) Method for Obtaining the Equivalent Piping LengthEquivalent length for type P60 = (length of piping to farthest indoor unit) + (0.3 o number of bends in the piping) (m)Length of piping to farthest indoor unit: type P60.....80 m

4-5-1. Correction of Heating Capacity for Frost and DefrostingIf heating capacity has been reduced due to frost formation or defrosting, multiply the capacity by the appropriate correction factor from the following table to obtain the actual heating capacity.

Correction factor diagram

Outdoor Intake temperature <W.B.°F (°C)> 43(6) 39(4) 36(2) 32(0) 28(−2) 25(−4) 21(−6) 18(−8) 14(−10) 5(−15) −4(−20) −13(−25)

Correction factor 1.0 0.98 0.89 0.88 0.89 0.9 0.95 0.95 0.95 0.95 0.95 0.95

OCH613

19

1.5m[4.9 ft]

1m [3.3 ft]

MICROPHONE

UNIT

GROUND

4-6. NOISE CRITERION CURVES

90

80

70

60

50

40

30

20

1063 125 250 500 1000 2000 4000 8000

APPROXIMATETHRESHOLD OFHEARING FORCONTINUOUSNOISE

OC

TAVE

BA

ND

SO

UN

D P

RES

SUR

E LE

VEL,

dB

(0 d

B =

0.0

002 μb

ar)

BAND CENTER FREQUENCIES, Hz

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

PUMY-P60NKMU1(-BS)

COOLINGMODE

HEATING58

SPL(dB)

59

LINE

OCH613

20

5 OUTLINES AND DIMENSIONSPUMY-P60NKMU1(-BS)

Unit: mm<inch>

Drain

hole

(5-{

33<1

-5/16

>)

Botto

m pip

ing ho

le(K

nock

-Out)

154 <6-1/16>

45<1

-25/

32>

81<3

-3/1

6>

86<3-3/8>

136 <5-11/32>

160

<6-5

/16>

160

<6-5

/16>

110

<4-1

1/32

>16

0<6

-5/1

6>

1/2 in

ch C

ondu

itatt

achm

ent

{22.2

<7/8>

{27.8

<1-3/

32>

Whe

n in

stal

ling

the

cond

uit.

Set

the

atta

chm

ent t

o th

e in

ner s

ide

of e

ach

pane

l.

3/4 in

ch C

ondu

itatt

achm

ent

Scale

1:5

24.7<31/32>

5<3/16>

60<2

-3/8

>22

.5<7

/8>

100

<3-1

5/16

>

Righ

t pipi

ng ho

le(K

nock

-Out)

Cond

uit ho

le({

24<1

5/16>

Knoc

k-Out)

Cond

uit ho

le({

37<1

-15/32

>Kno

ck-O

ut)

Righ

t trun

king h

ole(K

nock

-Out)

92<3

-5/8

>

60<2

-3/8

>

5<3/16>60<2-3/8>

55<2

-3/1

6>

53<2

-3/3

2>

92<3-5/8>

26<1-1/32>27<1-1/16>

29<1

-5/3

2>

73<2-7/8>

{92

<3-5

/8>

Min

. 150

mm

<5-2

9/32

>M

in. 1

000m

m<3

9-3/

8>

Cond

uit ho

le({

37<1

-15/32

>Kno

ck-O

ut)Fr

ont tr

unkin

g hole

(Kno

ck-O

ut)

Front

piping

hole

(Kno

ck-O

ut)

Cond

uit ho

le({

24<1

5/16>

Knock

-Out)

55<2-3/16> 27<1-1/16>

92<3

-5/8

>

75<2

-15/

16>

73<2-7/8> 26<1-1/32>

55<2

-3/1

6>

60<2-3/8>

5<3/16>

60<2

-3/8

>

{92

<3-5

/8>

FREE

Min

. 15m

m<1

9/32

>M

in. 1

5mm

<19/

32>

Cond

uit ho

le({

24<1

5/16>

Knoc

k-Out)

Cond

uit ho

le({

37<1

-15/32

>Kno

ck-O

ut)

Rear

trun

king h

ole(K

nock

-Out)

Rear

pipi

ng h

ole(K

nock

-Out

)

75<2

-15/

16>

60<2-3/8>

92<3

-5/8

>

73<2-7/8> 26<1-1/32>

27<1-1/16>55<2-3/16>

55<2

-3/1

6>

5<3/16>

60<2

-3/8

>

{92

<3-5

/8>

Air i

ntak

e

Fron

t pip

ing

cove

r

Rear

pip

ing

cove

r

2-U

Shap

ed n

otch

ed h

oles

(Fou

ndat

ion B

olt M

10<W

3/8>

)

Inst

alla

tion

Feet

2-12

×36

Ova

l hol

es(F

ound

atio

n Bo

lt M

10<W

3/8>

)

Side

Air

Inta

ke

Rear

Air

Inta

ke

Air D

ischa

rge

600

<23-

5/8>

225

<8-2

7/32

>22

5<8

-27/

32>

19<3/4>

330<13> 25<1>

70<2

-3/4

>

417<16-13/32>26<1-1/32>372<14-21/32>

60<2

-3/8

>

42<1

-21/

32>

40<1

-9/1

6>

56<2

-7/3

2>

0 53<2

-3/3

2>

Side

Air

Inta

ke

For t

he

powe

r sup

ply

For t

he

trans

miss

ion

line

For c

once

ntra

tion

cont

rol

Term

inal

con

nect

ion

From

left

to ri

ght

1 2

Hand

le for

mov

ing

Serv

ice p

anel

Hand

le fo

r mov

ing

Grou

nd fo

r the

pow

er su

pply

("GR"

mar

king

posit

ion)

Grou

nd fo

r the

tran

smiss

ion lin

eGr

ound

for c

once

ntra

tion

cont

rol

26<1-1/32>

*1 393<15-15/32>

1067<42>

*1 450<17-23/32>

362

<14-

1/4>

632<24-7/8> 369<14-17/32>

1338<52-11/16>

1050

<41-

11/3

2>

Hand

le fo

rm

ovin

g

Han

dle

for

mov

ing

Rear

Air

Inta

ke

21Re

frigera

nt GA

S pipe

conn

ection

(FLA

RE)

{ 19.1

(3/4F

)Re

frigera

nt LIQ

UID pip

e con

nectio

n (FL

ARE)

{ 9.52

(3/8F

)*1

Ind

ication

of ST

OP VA

LVE c

onne

ction lo

cation

.

4 PIPI

NG-W

IRING

DIRE

CTION

S3 F

OUND

ATIO

N BO

LTS

2 SER

VICE

SPA

CE1 F

REE S

PACE

(Arou

nd th

e unit

)

Max.<Fou

ndat

ion

bolt

heig

ht>

FOUN

DATIO

N

Serv

ice s

pace

Min. Min.

Min.

Min.

15<1

9/32

>

500

<19-

11/1

6>

500<19-11/16>

150<5-29/32>

30<1-3/16>

Piping

Knoc

k-Out

Hole

Detai

ls

Exam

ple of

Notes

The d

iagra

m be

low sh

ows a

basic

exam

ple.

Expla

ntion

of pa

rticula

r deta

ils ar

egiv

en in

the i

nstal

lation

man

uals

etc.

Dime

nsion

s of s

pace

need

edfor

servi

ce ac

cess

are

show

n in t

he be

low di

agra

m.

Plea

se se

cure

the u

nit fir

mly

with

4 fou

ndati

on (M

10<W

3/8>)

bolts

.(B

olts a

nd w

ashe

rs mu

st be

purch

ased

loca

lly.)

Pipin

g and

wirin

g con

necti

ons

can b

e mad

e fro

m 4 d

irecti

ons:

FRON

T, Ri

ght, R

ear a

nd B

elow.

OCH613

21

6

MODEL

PUMY-P60NKMU1

SW4 SW8

*1 MODEL SELECTIONThe black square( )indicates a switch position.

ONOFF

1 2 3 4 5 6

ONOFF

1 2

*2 Use copper supply wires.Utilisez des fils d' slimentation en cuivre.

RD

RD

YE

YE

P. B.

BK WH

WH

WH

U

U

V

V

W

W

RD

MC

M1

M2

S

TB3

TO INDOOR UNITCONNECTING WIRES30VDC(Non-polar)

FOR CENTRALIZEDCONTROL30VDC(Non-polar)

M1

M2

S

TB7

2

2

GNYE

BU

RDPOWER SUPPLY208/230VAC60Hz

TB1

L1

L2

GR

CN51(WH)

SW6

SW2SW8SW1

SW7SW3SW4*1

*2

*1

SW5SWU2 SWU1 SW9

TRANSLED1

CN2(RD)

CN4(WH)

LED3

CN3D(WH)

CN3S(RD)

CN3N(BU)

CN1(WH)

TB1BK

CNDC(PK)

LEV-BM

1 41

3

3

1 3 1 3 1 3

CN52(RD)1 3

31

12

2 21 11 2

1 2

2

2 1 2 1

2

31 21

TH7 TH6 TH3 TH463HS63H

1

7

7

1 5

1 5TH7/6(RD)

CNLVB(RD)

TH3(WH)

TH4(WH)

TH2

TH8

TH2(BK)

63HS(WH)

1 3 1 3

63LS

63LS(BU)

63H(YE)

MULTI. B.

LED2

M-NET P.B.

52C(BK)

31 31 31X5

0521S4(GN)

SV1(GY)

SV2(BU)

SS(WH)

21S4 SV1

CNAC(RD)

CNS1(RD)

CNS2(YE)

F1

F2X504

X503

X502

X501

CN102(WH)

CN2(WH)

4

4

1

1

CN40(WH)

4 1

5 3 1

CN41(WH)

4 1

4

2

3

CN2(RD)

CN4(WH)

1 2

2

1

7

7

22

CNDC(PK) 3 1

2

N2

P2+

-

+

DCL

DCL2 DCL1

IGBT

E I

E 4

E2CN

AC1

(WH)

L IN I

BKBK

21

3

CNAC

2(R

D)

1

3

E3

BK

2

is the switch position.

LEV-AM

1 5CNLVA(WH)

CN52C(RD)1 3

3

52C

52C

BK

17

CNF1(WH)

1 7

CNF2(WH)

MF1

MF2

SYMBOL NAMETB1 Terminal Block <Power Supply>TB3

TB7

MC Motor For CompressorMF1,MF2 Fan Motor

LEV-A,LEV-B Linear Expansion Valve

21S4

SV1

TH3 Thermistor<Outdoor Liquid Pipe>TH2 Thermistor<Hic Pipe>

TH4 Thermistor<Compressor>TH6 Thermistor<Suction Pipe>TH7TH8

Thermistor<Ambient>Thermistor<Heat Sink>

63H High Pressure Switch63HS High Pressure Sensor63LS Low Pressure Sensor

DCLP.B. Power Circuit Board

Connection Terminal<U/V/W-Phase>U/V/W

MULTI.B.Switch<Display Selection>SW1Switch<Function Selection>SW2Switch<Test Run>SW3Switch<Model Selection>SW4Switch<Function Selection>SW5Switch<Function Selection>SW6Switch<Function Selection>SW7Switch<Model Selection>SW8

Multi Controller Circuit Board

Connection Terminal<L-Phase>LIConnection Terminal<N-Phase>NI

EI,E2,E3,E4Power ModuleIGBTConnection Terminal<Reactor>DCL1,DCL2

Reactor

Terminal Block <Centralized Control Transmission Line>

Terminal Block <Indoor/Outdoor Transmission Line>

ConnectionTerminal<Electrical Parts Box>

Solenoid Valve Coil<4-Way Valve>

Solenoid Valve Coil<Bypass Valve>

Fuse<UL6.3A250V>F1,F2

Switch<Function Selection>SW9Switch<Unit Address Selection, ones digit>SWU1Switch<Unit Address Selection, tens digit>SWU2

LED<Operation Inspection Display>LED1,LED2LED<Power Supply to Main Microcomputer>LED3

Connector<Connection For Option>SSConnector<Connection For Option>CN3D

CNS1

Connector<Centralized Control Transmission Line>CNS2

Connector<Connection For Option>CN3SConnector<Connection For Option>CN3NConnector<Connection For Option>CN51

RelayX501~505M-NET P.B. M-NET Power Circuit Board

TB1

Connector<Indoor/Outdoor Transmission Line>

ConnectionTerminal<Electrical Parts Box>

WIRING DIAGRAM

PUMY-P60NKMU1(-BS)

OCH613

22

7 NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

7-1. TRANSMISSION SYSTEM SETUP

01 2 3 4

56789

01 2 3 4

56789

01 2 3 4

56789

01 2 3 4

56789

01 2 3 4

56789

01 2 3 4

56789

051 0

1 2 3 45

67890

1 2 3 45

6789

056

001

01 2 3 4

56789

01 2 3 4

56789

010

101

10

1 2 3 45

67890

1 2 3 45

6789

01 2 3 4

56789

01 2 3 4

56789

002

102

104

154

11

11

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01 2 3 4

56789

01 2 3 4

56789

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01 2 3 4

56789

01 2 3 4

56789

008

01 2 3 4

56789

01 2 3 4

56789

003

01 2 3 4

56789

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56789

01 2 3 4

56789

01 2 3 4

56789

01 2 3 4

56789

01 2 3 4

56789

007

01 2 3 4

56789

01 2 3 4

56789

006

01 2 3 4

56789

01 2 3 4

56789

01 2 3 4

56789

01 2 3 4

56789

01 2 3 4

56789

01 2 3 4

56789

004

01 2 3 4

56789

01 2 3 4

56789

01 2 3 4

56789

01 2 3 4

56789

005

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OCH613

23

7-2. Special Function Operation and Settings for M-NET Remote Controller For the detailed procedure of "group settings" and "paired settings", refer to the remote controller's manuals.

7-3. REFRIGERANT SYSTEM DIAGRAM PUMY-P60NKMU1(-BS)

Refrigerant Gas pipe<3/4>

Refrigerant Liquid pipe

<3/8>

Accumulator

Thermistor (TH6)(Saturation temperature of suction pressure)

Solenoidvalve (SV1)

Check valve(High pressure)

Check valve(Low pressure)

High pressure sensor (63HS)

High pressureswitch (63H)

Low pressuresensor (63LS)

Thermistor (TH7)(Outdoor temperature)

(Pipe temperature)

Thermistor (TH4)

Thermistor (TH3)

Oil separator

Service port

Serviceport

4-way valve

Strainer

Strainer

Capillary tube

Strainer

Strainer

Ball valve

Stop valve

Distributor

Strainer Strainer

Compressor

Strainer

Refrigerant piping specifications <dimensions of flared connector> Unit: in <mm>

Capillary tube for oil separator : [2.5 o [0.8 o L800Capillary tube for solenoid valve : [4.0 o [3.0 o L500

Capacity Item Liquid piping Gas piping

P06, P08, P12, P15, P18

P24, P30, P36, P48, P54

P60

Indoor unit

Outdoor unit

1/4 <[6.35>

3/8 <[9.52>

3/8 <[9.52>

1/2 <[12.7>

5/8 <[15.88>

3/4 <[19.05>

P72 3/8 <[9.52> 3/4 <[19.05>

Thermistor (TH2)(Hic)

(Compressor)

HIC

LEV-BLEV-A

Refrigerant flow in cooling Refrigerant flow in heating

OCH613

24

7-4. SYSTEM CONTROL7-4-1. Example for the System• Example for wiring control cables, wiring method and address setting, permissible lengths, and the prohibited items are listed

in the standard system with detailed explanation.

A. Example of a M-NET remote controller system (address setting is necessary.)Example of wiring control cables Wiring Method and Address Setting

• 1 M-NET remote controller for each M-NET control indoor unit.

• There is no need for setting the 100 position on the M-NET remote controller.

1. Standard operation

2. Operation using 2 M-NET remote controllers

• Using 2 M-NET remote controllers for each M-NET control indoor unit.

a. Use feed wiring to connect terminals M1 and M2 on transmission cable block (TB3) for the outdoor unit (OC) to terminals M1 and M2 on the transmission cable block (TB5) of each M-NET control indoor unit (M-IC). Use non-polarized 2-core wire.

b. Connect terminals M1 and M2 on transmission cable terminal block (TB5) for each indoor unit with the termi-nal block (TB6) for M-NET the remote controller (M-NET RC).

c. Set the address setting switch (on outdoor unit P.C.B) as shown below.

3. Group operation

• Multiple M-NET control indoor units operated together by 1 M-NET remote controller

a. Same as above ab. Same as above bc. Set address switch (on outdoor unit P.C.B) as

shown below.

a. Same as above ab. Connect terminals M1 and M2 on transmission cable termi-

nal block (TB5) of the M-IC main unit with the most recent address within the same M-NET control indoor unit (M-IC) group to terminal block (TB6) on the M-NET remote controller.

c. Set the address setting switch (on outdoor unit P.C.B) as shown below.

d. Use the M-NET control indoor unit (M-IC) within the group with the most functions as the M-IC (Main) unit.

Combinations of 1 through 3 above are possible.

TB5 TB15

(01)

(101)

M-IC(Main)

TB3 TB7

(51)

OC

TB5 TB15

(02)

M-IC(Sub)

M-NET RC

1 2

A B

M1 M2 S M1 M2 SM1 M2 S 1 2M1 M2 S

Group A

TB5 TB15

(01)

(101)M-NET RC

(Main)

(151)

M-IC

TB3 TB7

(51)

OC

TB5 TB15

(02)

M-IC

M-NET RC(Sub)

(102)M-NET RC

(Main)

(152)M-NET RC

(Sub)

1 2M1 M2 S M1 M2 SM1 M2 S 1 2M1 M2 S

A B A B A B A B

TB51 2

TB15

(01)

(101)

M-IC

A B

M1 M2

TB3S

TB7

(51)

OCL1

L3

L2

TB5 TB15

(02)

M-IC

M-NET RC

(102)M-NET RC

l1

l2

M1 M2 SM1 M2 S 1 2M1 M2 S

A B Unit Range Setting Method

M-NET control indoor unit (M-IC) 001 to 050 —

Outdoor unit (OC) 051 to 100 Use the smallest address of all the indoor unit plus 50.

M-NET Remote controller (M-NET RC) 101 to 150 Indoor unit address plus 100

Unit Range Setting MethodM-NET control

indoor unit (M-IC) 001 to 050 —

Outdoor unit (OC) 051 to 100 Use the smallest address of all the indoor units plus 50.

Main M-NET Remote Controller

(M-NET RC)101 to 150 Indoor unit address plus 100

Sub M-NET Remote Controller

(M-NET RC)151 to 200 Indoor unit address plus 150

Unit Range Setting Method

M-IC (Main) 001 to 050Use the smallest address within the same group of M-NET control indoor units.

M-IC (Sub) 001 to 050

Use an address, other than that of the M-IC (Main) from among the units within the same group of indoor units. This must be in sequence with the M-IC (Main).

Outdoor unit 051 to 100 Use the smallest address of all the M-NET control indoor units plus 50.

Main M-NET Remote Controller

(M-NET RC)101 to 150 Set at an M-IC (Main) address

within the same group plus 100.

OCH613

25

• Name, Symbol and the Maximum Remote controller Units for Connection

Permissible Lengths Prohibited items

Longest transmission cable lengthAWG 16 [1.25 mm²]L1 + L2, L3 + L1 [ 656A [200 m]M-NET Remote controller cable length1. If AWB 20 to AWG 16 [0.5 to 1.25 mm² ]R1, R2 [33 ft [10 m]

2. If the length exceeds 33 ft [10 m], the exceeding section should be AWG 16 [1.25 mm²] and that section should be a value within the total extension length of the transmission cable and maxi-mum transmission cable length. (L3)

Same as above

Same as above

1 Use the M-NET control indoor unit (M-IC) address plus 150 as the sub M-NET remote controller address. In this case, it should be 152.

2 3 or more M-NET remote controllers (M-NET RC) cannot be connected to 1 M-NET control indoor unit.

1 The M-NET remote controller address is the M-NET control indoor unit main address plus 100. In this case, it should be 101.

• M-NET remote controller (M-NET RC) and MA remote controller (MA RC) cannot be used together.

• Do not connect anything with TB15 of M-NET control indoor unit (M-IC).

Name Symbol Maximum units for connectionOutdoor unit OC —M-NET control

Indoor unit M-IC 1 OC unit can be connected to 1 to 10 (P60) M-IC unitsM-NET remote

controller M-NET RC Maximum 2 M-NET RC for 1 indoor unit, Maximum 10 M-NET RC for 1 OC

NO

TB5 TB15

(01)

(101)

M-IC

TB3 TB7

(51)

OC

TB5 TB15

(02)

M-NET RC

TB15

MA-RC

1 2

A B

M1 M2 S M1 M2 SM1 M2 S 1 2M1 M2 S

A B

M-IC

NO NO

TB5 TB15

(01)

(101)M-NET RC

(Main)

(151)

M-IC

TB3 TB7

(51)

OC

TB5 TB15

(02)

M-IC

M-NET RC(Sub)

(102)M-NET RC

(Main)

(104)2M-NET RC

1 2

A B

M1 M2 S M1 M2 SM1 M2 S 1 2M1 M2 S

A B A B A BA B

(103)1M-NET RC

(Sub)

NO

TB5 TB15

(01)

(102)

M-IC(Main)

TB3 TB7

(51)

OC

TB5 TB15

(02)

M-IC(Sub)

M-NET RC

1 2

A B

M1 M2 S M1 M2 SM1 M2 S 1 2M1 M2 S

OCH613

26

B. Example of a group operation system with 2 or more outdoor units and a M-NET remote controller.(Address settings are necessary.)

Exa

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es o

f Tra

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issi

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iring

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Add

ress

Set

tings

a. Always use shielded wire when making connections between the outdoor unit (OC) and the M-NET control indoor unit (M-IC), as well for all OC-OC, and IC-IC wiring intervals.

b. Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block (TB3) of each outdoor unit (OC) to terminals M1 and M2 on the terminal S on the transmission cable terminal block of the M-NET control indoor unit (M-IC).

c. Connect terminals M1 and M2 on the transmission cable terminal block of the M-NET control indoor unit (M-IC) that has the most recent address within the same group to the terminal block on the M-NET remote controller (M-NET RC).

d. Connect together terminals M1, M2 and terminal S on the terminal block for centralized control (TB7) for the outdoor unit (OC).

e. DO NOT change the jumper connector CN41 on outdoor multi controller circuit board.f. The earth processing of S terminal for the centralized control terminal block (TB7) is unnecessary. Connect the termi-

nal S on the power supply unit with the earth.g. Set the address setting switch as follows.

h. The group setting operations among the multiple M-NET control indoor units is done by the M-NET remote controller (M-NET RC) after the electrical power has been turned on.

Unit Range Setting MethodM-IC (Main) 01 to 50 Use the smallest address within the same group of M-NET control indoor units.

M-IC (Sub) 01 to 50 Use an address, other than the M-IC (Main) in the same group of M-NET control indoor units. This must be in sequence with the M-IC (Main).

Outdoor Unit 51 to 100 Use the smallest address of all the M-NET control indoor units plus 50.The address automatically becomes “100” if it is set as “01–50”.

Main M-NET Remote Controller 101 to 150 Set at an M-IC (Main) address within the same group plus 100.Sub M-NET Remote Controller 151 to 200 Set at an M-IC (Main) address within the same group plus 150.

MA Remote Controller — Address setting is not necessary. (Main/sub setting is necessary.)

A

B

C

E

D

TB7TB3

M-IC(51)

TB5

M-NET RC

(01)

M-IC

TB5

(03)

M-IC

TB5

(02)

M-IC

TB5

(04)

M-IC

TB5

(05)

TB5

(07)

IC

TB5

(06)

L2

L1

(101) (105)

(104)

(155)

OC

TB7

(53)

OC

3

Power SupplyUnit

System controller

L3

L6

L7

L4

L5

2

4

1

A : GroupB : GroupC : GroupD : Shielded WireE : Sub M-NET Remote Controller( ): Address example

r

rr r

M1 M2 S M1 M2 S M1 M2 S M1 M2 S

A BA BA B

M1 M2 S M1 M2 S M1 M2 SSM1 M2 STB3

M1 M2 S

M1 M2 S

A B

M1 M2

M1 M2 S M1 M2 S

NOM-IC

M-NET RC

M-NET RC M-NET RC

OCH613

27

• Name, Symbol, and the Maximum Units for ConnectionP

erm

issi

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Leng

thP

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ms

• Longest length via outdoor units : L1+L2+L3+L4, L1+L2+L3+L5, L1+L2+L6+L7 [ 1640 ft [500 m] (AWG 16 [1.25 mm²])• Longest transmission cable length : L1, L3+L4, L3+L5, L2+L6, L7 [ 656 ft [200 m] (AWG 16 [1.25 mm²])• M-NET Remote controller cable length : R1,R2, R2+R3, R4 [ 33 ft [10 m] (AWG 20 to AWG 16 [0.5 to 1.25 mm²])

If the length exceeds 33 ft [10 m], use a AWG 16 [1.25 mm²] shielded wire. The length of this section (L8) should be included in the calculation of the maximum length and overall length.

• Never connect together the terminal blocks (TB5) for transmission wires for M-NET control indoor units (M-IC) that have been connected to different outdoor units (OC).

• Set all addresses to ensure that they are not overlapped.• M-NET remote controller and MA remote controller cannot be connected with the M-NET control indoor unit of the same

group wiring together.

A

B

C

E

D

M-IC(51)

TB5

M-NET RC

(01)

TB5

(03)

M-IC

TB5

(02)

TB5

(04)

M-IC

TB5

(05)

TB5

(07)

M-IC

TB5

(06)

(101) (105)

(104)

(155)

OC

(53)OC

Power SupplyUnit

A : GroupB : GroupC : GroupD : Shielded WireE : Sub M-NET Remote Controller( ): Address example

TB7TB3M1 M2 S

TB7

M1 M2 SM1 M2 S

TB3

M1 M2 S

M1 M2 S

M1 M2 S M1 M2 S M1 M2 S M1 M2 S

M1 M2 S M1 M2 S M1 M2 S

A B A B A B

A B

M1 M2 S

System controller

NONO

M-IC M-IC M-IC

M-NET RC M-NET RC

M-NET RC

OCH613

28

C. Example of a MA remote controller system (address setting is not necessary.)NOTE : In the case of same group operation, need to set the address that is only main M-NET control indoor unit.

Example of wiring control cables Wiring Method and Address Setting

• 1 MA remote controller for each indoor unit.

1. Standard operation

2. Operation using two remote controllers

• Using 2 MA remote control-lers for each M-NET control indoor unit.

a. Use feed wiring to connect terminals M1 and M2 on transmission cable block (TB3) for the outdoor unit (OC) to terminals M1 and M2 on the trans-mission cable block (TB5) of each M-NET control indoor unit (M-IC). Use non-polarized 2-core wire.

b. Connect terminals 1 and 2 on transmission cable terminal block (TB15) for each M-NET control indoor unit with the terminal block for the MA remote controller (MA-RC).

3. Group operation

• Multiple indoor units operated together by 1 MA remote con-troller.

a. The same as above ab. The same as above bc. In the case of using 2 remote controllers, connect

terminals 1 and 2 on transmission cable terminal block (TB15) for each indoor unit with the terminal block for 2 MA remote controllers.· Set either one of the MA remote controllers to "sub remote controller".

Refer to the installation manual of MA remote con-troller.

a. The same as above ab. The same as above bc. Connect terminals 1 and 2 on transmission cable

terminal block (TB15) of each M-NET control indoor unit, which is doing group operation with the terminal block the MA remote controller. Use non-polarized 2-core wire.

d. In the case of same group operation, need to set the address that is only main M-NET control indoor unit. Please set the smallest address within number 01–50 of the M-NET control indoor unit with the most functions in the same group.

Combinations of 1 through 3 above are possible.

MA-RC

TB5 TB15

(00)

M-IC

TB3 TB7

(00)

OC

TB5 TB15

(00)

M-IC

r7

r8

M1 M2 S M1 M2 S M1 M2 S

A B

1 2M1 M2 S1 2

MA-RC (Main)

TB5 TB15

(00)

M-IC

TB3 TB7

(00)

OC

TB5 TB15

(00)

M-IC

MA-RC(Sub)

MA

r3

r4

r5

M1 M2 S M1 M2 S 1 2M1 M2 S 1 2M1 M2 S

A B A B A B

TB5 TB15

(00)

M-IC

TB3 TB7

(00)

OC

L1 L2

TB5 TB15

(00)

M-IC

MA-RCMA-RC

r1

r2

M1 M2 S M1 M2 S 1 2M1 M2 S 1 2M1 M2 S

A BA B

OCH613

29

Permissible Lengths Prohibited items

Longest transmission cable length:L1 + L2 [ 656 ft [200 m] (AWG 16 [1.25 mm²])MA remote controller cable length:R1, R2 [ 656 ft [200 m] (AWG 22 to AWG 16 [0.3 to 1.25 mm²])

Longest transmission cable length:L1 + L2 [ 656 ft [200 m] (AWG 16 [1.25 mm²])MA remote controller cable length:R3 +R4, R5 [ 656 ft [200 m] (AWG 22 to AWG 16 [0.3 to 1.25 mm²])

Longest transmission cable length:L1 + L2 [ 656 ft [200 m] (AWG 16 [1.25 mm²])MA remote controller cable length:R7 +R8 [ 656 ft [200 m] (AWG 22 to AWG 16 [0.3 to 1.25 mm²])

The MA remote controller and the M-NET remote controller cannot be used together with the M-NET con-trol indoor unit of the same group.

3 MA remote controllers or more cannot be connected with the M-NET control indoor unit of the same group.

The second MA remote controller is con-nected with the terminal block (TB15) for the MA remote controller of the same M-NET control indoor unit (M-IC) as the first MA remote control.

NO

MA-RC

(00)

M-IC(00)

OC

MA-RC

(00)

M-IC

TB51 2

TB15

A B

M1 M2

TB3S

TB7 TB5 TB15M1 M2 SM1 M2 S 1 2M1 M2 S

A B

MA-RC(Main)

TB5 TB15

(00)

M-IC

TB3 TB7

(00)

OC

TB5 TB15

(00)

M-IC

MA-RC(Sub)

MA-RC(Main)

MA-RC(Sub)

MA-RC(Main)

1 2M1 M2 S M1 M2 SM1 M2 S

A B A B A B A B A B

1 2M1 M2 S

NO

NO

TB5 TB15TB3 TB7

(00)

OC

TB5 TB15

(00)

M-IC

MA-RCMA-RCM-NET RC

1 2

A B

M1 M2 S M1 M2 SM1 M2 S 1 2M1 M2 S

A BA B

(00)

M-IC

(00)

OCH613

30

D. Example of a group operation with 2 or more outdoor units and a MA remote controller.(Address settings are necessary.)

Exa

mpl

es o

f Tra

nsm

issi

on C

able

Wiri

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iring

Met

hod

Add

ress

Set

tings

a. Always use shielded wire when making connections between the outdoor unit (OC) and the M-NET control indoor unit (M-IC), as well for all OC-OC, and IC-IC wiring intervals.

b. Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block (TB3) of each outdoor unit (OC) to terminals M1 and M2 on the terminal S on the transmission cable terminal block of the M-NET control indoor unit (M-IC).

c. Connect terminals M1 and M2 on the transmission cable terminal block of the M-NET control indoor unit (M-IC) that has the most recent address within the same group to the terminal block on the M-NET remote controller (M-NET RC).

d. Connect together terminals M1, M2 and terminal S on the terminal block for centralized control (TB7) for the outdoor unit (OC).e. DO NOT change the jumper connector CN41 on outdoor multi controller circuit board.f. The earth processing of S terminal for the centralized control terminal block (TB7) is unnecessary. Connect the termi-

nal S on the power supply unit with the earth.g. Set the address setting switch as follows.

h. The group setting operations among the multiple M-NET control indoor units is done by the M-NET remote controller (M-NET RC) after the electrical power has been turned on.

i. When connecting PWFY unit• For PWFY series, do not set up group connection with other indoor units.• LOSSNAY is not available for use with PWFY series.• Use a WMA remote controller for operation of PWFY series.For more details, refer to the service manual for PWFY series.

Unit Range Setting MethodM-IC (Main) 01 to 50 Use the smallest address within the same group of indoor units.

M-IC (Sub) 01 to 50 Use an address, other than the M-IC (Main) in the same group of M-NET indoor units. This must be in sequence with the M-IC (Main).

Outdoor Unit 51 to 100 Use the smallest address of all the indoor units plus 50.The address automatically becomes “100” if it is set as “01–50”.

Main M-NET Remote Controller 101 to 150 Set at an M-IC (Main) address within the same group plus 100.Sub M-NET Remote Controller 151 to 200 Set at an M-IC (Main) address within the same group plus 150.

MA Remote Controller — Address setting is not necessary. (Main/sub setting is necessary.)

A

B

C

E

D

TB7

M-IC(51)

TB15 TB15

TB15

MA-RC

(01)

M-IC

TB5

(03)

M-IC

TB5TB5

(02)

M-IC

TB5

(04)

M-IC(05)

M-IC(07)

M-IC(06)

L1

MA-RC

MA-RC

MA-RC

OC

(53)OC

1

m4

3

Power SupplyUnit

L3

L7

L4

m3

1

1

2 2

TB3

A : GroupB : GroupC : GroupD : Shielded WireE : Sub MA Remote Controller( ): Address example

m

m

m

m

mm

M1 M2 S M1 M2 S

TB7

M1 M2 SM1 M2 S

TB3

M1 M2 S

M1 M2 S

M1 M2 S M1 M2 S

M1 M2 S

A B

1 2

1 2 M1 M2 S 1 2

1 2TB15TB5

M1 M2 S 1 2TB15TB5

M1 M2 S 1 2

A B A B

TB15 TB5M1 M2 S 1 2

TB15

A B

L2

L6

System controller

NO

OCH613

31

• Name, Symbol, and the Maximum Units for ConnectionP

erm

issi

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Leng

thP

rohi

bite

d ite

ms

• Never connect together the terminal blocks (TB5) for transmission wires for M-NET control indoor units (M-IC) that have been connected to different outdoor units (OC).

• M-NET remote controller and MA remote controller cannot be connected with the M-NET control indoor unit of the same group wiring together.

Longest length via outdoor unit (M-NET cable): L1+L2+L3+L4 and L1+L2+L6+L7 [ 1640 ft [500 m] (AWG 16 [1.25 E] or more)Longest transmission cable length (M-NET cable): L1 and L3+L4 and L2+L6 and L7 [ 656 ft [200 m] (AWG 16 [1.25 E] or more)MA Remote controller cable length: m1 and m1+m2+m3 and m1+m2+m3+m4 [ 656 ft [200 m] (AWG 22 to AWG 16 [0.3 to 1.25 E])

A : GroupB : GroupC : GroupD : Shielded WireE : Sub MA Remote Controller( ): Address example

A

B

C

E

M-IC(51)

TB5 TB15 TB15

TB15 TB15

MA-RC

(01)

M-IC

TB5

(03)

M-IC

TB5

(02)

M-IC

TB5

(04)

M-IC(05)

M-IC

TB5

(07)

M-IC(06)

MA-RC

MA-RC

MA-RC

OC

(53)OC

Power SupplyUnit

TB7TB3M1 M2 S M1 M2 S

TB7

M1 M2 SM1 M2 S

TB3

M1 M2 S

M1 M2 S

M1 M2 S M1 M2 S M1 M2 S

M1 M2 S M1 M2 S

A B

A B

A B A B

1 2

1 2 1 2 1 2

1 2TB15TB5

M1 M2 S 1 2TB15TB5

M1 M2 S 1 2

TB15

D

System controller

NO

NO

OCH613

32

8 TROUBLESHOOTING

8-1. CHECK POINTS FOR TEST RUN8-1-1. Procedures before test run(1) Before a test run, make sure that the following work is completed.

• Installation related : Make sure that the panel of cassette type and electrical wiring are done.Otherwise electrical functions like auto vane will not operate normally.

• Piping related : Perform leakage test of refrigerant and drain piping.Make sure that all joints are perfectly insulated.Check stop valves on both liquid and gas side for full open.

• Electrical wiring related : Check ground wire, transmission cable, remote controller cable, and power supply cable for secure connection.Make sure that all switch settings of address or adjustments for special specification systems are correctly settled.

(2) Safety check : With the insulation tester of 500 V, inspect the insulation resistance.Do not touch the transmission cable and remote controller cable with the tester.The resistance should be over 1.0 M". Do not proceed inspection if the resistance is under 1.0 M".Inspect between the outdoor unit power supply terminal block and ground first, metallic parts like refrigerant pipes or the electrical box next, then inspect all electrical wiring of outdoor unit, indoor unit, and all linked equipment .

(3) Before operation : a) Turn the power supply switch of the outdoor unit to on for compressor protection. For a test run, wait at least 12 hours

from this point.b) Register control systems into remote controller(s). Never touch the ON/OFF switch of the remote controller(s). Refer to “7-2.

Special Function Operation and Settings for M-NET Remote Controller” as for settings. In MA remote controller(s), this registration is unnecessary.

(4) More than 12 hours later from power supply to the outdoor unit, turn all power switch to on for the test run. Perform test run according to the “Operation procedure” table of the bottom of this page. While test running, make test run reports .

8-1-1-1. Test run for M-NET Remote controllerFor the detailed procedure, refer to the remote controller's manuals.

OCH613

33

F1 F2 F3 F4

unem ecivreS

rosruC:unem niaM

Test runInput maintenance info.Function settingCheckSelf check

F1 F2 F3 F4

Test run menu

CursorService menu:

Test runDrain pump test run

1 Select "Service" from the Main menu, and press the button.

2 Select "Test run" with the F1 or F2 button, and press the button.

Select "Test run" with the F1 or F2 button, and press the button.

F1 F2 F3 F4

CoolPipe

AutoSwitch disp.

Mode Fan

RemainTest run

F1 F2 F3 F4

Remain

Vane

Cool mode: Check the cold air blows out.Heat mode: Check the heat blows out.

Press the F1 button to go through the operation modes in the order of "Cool and Heat".

Check the auto vane with the F1 F2 buttons. Check the operation of the outdoor unit fan, also.

Press the button to return to “Test run operation”.

Press the button.

When the test run is completed, the “Test run menu” screen will appear.The test run will automatically stop after 2 hours.*The function is available only for the model with vanes.

Test run operation

Auto vane check*

Press the button and open the Vane setting screen.

Function buttons

F1 F2 F3 F4

MENU RETURN SELECT ON/OFF

8-1-1-2. Test run for wired remote controller <PAR-30MAA> <PAR-31MAA>

OCH613

34

8-1-2. Countermeasures for Error During Test Run

• If a problem occurs during test run, a code number will appear on the remote controller (or LED on the outdoor unit), and the air conditioning system will automatically cease operating.

Determine the nature of the abnormality and apply corrective measures.

1 2 3 4 5 6 7 8

[Example]When the compressor and SV1 are turned during cooling operation.

Bit

Indication

1Compressor operated

2

52C

3

21S4

4

SV1

5

(SV2)

6

—

7

—

8

Always lit

Self-diagnosis functionThe indoor and outdoor units can be diagnosed automatically using the self-diagnosis switch(SW1) and LED1, LED2 (LED indication) found on the multi-controller of the outdoor unit.LED indication : Set all contacts of SW1 to OFF. During normal operationThe LED indicates the drive state of the controller in the outdoor unit.

Check code

(2 digits)

Check code

(4 digits)Trouble

Detected Unit RemarksIndoor Outdoor Remote

Controller

Ed 0403 Serial communication error Outdoor unit outdoor multi controller circuit board – Power circuit board communication trouble

U2 1102 Compressor temperature trouble Check delay code 1202UE 1302 High pressure trouble Check delay code 1402U7 1500 Superheat due to low discharge temperature trouble Check delay code 1600

U2 1501Refrigerant shortage trouble Check delay code 1601Closed valve in cooling mode Check delay code 1501

EF 1508 4-way valve trouble in heating mode Check delay code 1608PA 2500 Water leakageP5 2502 Drain over fl ow protectionP4 2503 Drain sensor troubleUF 4100 Compressor current interruption (locked compressor) Check delay code 4350Pb 4114 Fan trouble (indoor)UP 4210 Compressor overcurrent interruption

U9 4220 Voltage shortage/Overvoltage/PAM error/L1open phase/power synchronization signal error

Check delay code 4320

U5 4230 Heat Sink temperature trouble Check delay code 4330U6 4250 Power module trouble or Overcurrent trouble Check delay code 4350U8 4400 Fan trouble (Outdoor) Check delay code 4500

U3 5101Air inlet thermistor (TH21) open/short orCompressor temperature thermistor (TH4) open/short Check delay code 1202

U4 5102Liquid pipe temperature thermistor (TH22) open/short orSuction pipe temperature thermistor (TH6) open/short Check delay code 1211

U4 5103 Gas pipe temperature thermistor (TH23) open/shortU4 5105 Outdoor liquid pipe temperature thermistor (TH3) open/short Check delay code 1205U4 5106 Ambient thermistor (TH7) open/short Check delay code 1221U4 5109 HIC pipe temperature thermistor (TH2) open/short Check delay code 1222U4 5110 Heat Sink temperature thermistor (TH8) open/short Check delay code 1214F5 5201 High pressure sensor (63HS) trouble Check delay code 1402F3 5202 Low pressure sensor (63LS) trouble Check delay code 1400UH 5300 Current sensor trouble/Primary current trouble Check delay code 4310P4 5701 Contact failure of drain fl oat switchA0 6600 Duplex address error Only M-NET Remote controller is detected.A2 6602 Transmission processor hardware error Only M-NET Remote controller is detected.A3 6603 Transmission bus BUSY error Only M-NET Remote controller is detected.A6 6606 Signal communication error with transmission processor Only M-NET Remote controller is detected.A7 6607 No ACK error Only M-NET Remote controller is detected.A8 6608 No response frame error Only M-NET Remote controller is detected.

E0/E4 6831 MA communication receive error Only MA Remote controller is detected.E3/E5 6832 MA communication send error Only MA Remote controller is detected.E3/E5 6833 MA communication send error Only MA Remote controller is detected.E0/E4 6834 MA communication receive error Only MA Remote controller is detected.

EF 7100 Total capacity errorEF 7101 Capacity code errorEF 7102 Connecting unit number errorEF 7105 Address setting errorEF 7130 Incompatible unit combination

Notes: 1. When the outdoor unit detects No ACK error/No response error, an object indoor unit is treated as a stop, and not assumed to be abnormal.2. Refer to the service manual of indoor unit or remote controller for the detail of error detected in indoor unit or remote controller.

OCH613

Check code

Abnormal points and detection methods Causes and check points

Abnormal if serial communication between the outdoor multi controller circuit board and outdoor power circuit board is defective.

Wire breakage or contact failure of connector CN2 or CN4 Malfunction of communication circuit to power circuit board on outdoor multi controller circuit board Malfunction of communication circuit on outdoor power circuit board

●Diagnosis of defectivesMake sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

0403(Ed)

Serial communication error

No

Yes

Are they connected normally?

Check the connection of the communication line (CN2 and CN4) between the outdoor multi controller circuit board and power circuit board.

Connect the CN2 and CN4 properly.Replace them in case of a breakage.

The communication circuit of either the outdoor multi controller circuit board or power circuit board is defective.If unable to identify the defective circuit;

Replace the outdoor multi controller circuit board if it does not recover.Replace the outdoor power circuit board.

35

8-1-3. SELF-DIAGNOSIS ACTION BY FLOWCHART

OCH613

Check code


(1) Abnormal if TH4 falls into following temperature conditions;

●exceeds 230°F [110:] continuously for 5 minutes ●exceeds 257°F [125:]

(2) Abnormal if a pressure detected by the high-pressure sensor and converted to saturation temperature exceeds 104°F [40 ] during defrosting, and TH4 exceeds 230°F [110 ].

TH4: Thermistor <Compressor>LEV: Electronic expansion valve

Malfunction of stop valve Over-heated compressor operation caused by shortage of refrigerant Defective thermistor Defective outdoor multi controller circuit board LEV performance failure Defective indoor controller board Clogged refrigerant system caused by foreign object Refrigerant shortage (Refrigerant liquid accumulation in compressor while indoor unit is OFF/thermo-OFF.)


Diagnosis Remedy

1102(U2)

Compressor temperature trouble

Yes

Yes

No

Yes

Yes

No

No

No

Is 5101 displayed when restarted?

Is the outdoor stop valve (liquid/gas) fully open?

Is there a refrigerant leak?

Is there any abnormality on connectors/wires such as a disconnection, half-disconnection or breakage?

Check the connection for thermistor wiring and indoor controller board connector.

Refer to the diagnosis of check code 5101.

Open the stop valve (liquid/gas) fully.

Repair the refrigerant leakage.

Connect the connector properly(Repair or replace it in case of a breakage).

(5101)

(1102)

(no leak)

Continue to the next page

Chart 1 of 2

36OCH613

Check code

1102(U2)

Compressor temperature trouble


Diagnosis Remedy

Yes

Yes

Yes

No

No

No

Continued from the previous page

Is the voltage normal value?Is it free from any trace of over-heating or burning?

Is there a resistance detected?


Check the voltage and appearance of the outdoor multi controller circuit board.

Disconnect the thermistor wiring to check the resistance.

Disconnect the indoor LEV wiring and check the resistance.

Replace the outdoor multi controller circuit board.

Replace the thermistor.

Replace the indoor LEV.

Replace the indoor controller board.

Chart 2 of 2

37OCH613

Check code

1302(UE)

High pressure trouble


<63H equipped model (63HS non-equipped)>(1) High pressure abnormality (63H operation)

Abnormal if 63H operates(*) during compressor operation. (* 602 PSIG)

<63HS equipped model (63H non-equipped)>(2) High pressure abnormality (63HS detected)

1. Abnormal if a pressure detected by 63HS is 625 PSIG or more during compressor operation.

2. Abnormal if a pressure detected by 63HS is 600 PSIG or more for 3 minutes during compressor operation.

63H : High-pressure switch63HS : High-pressure sensorLEV : Electronic expansion valveSV1 : Solenoid valveTH7 : Thermistor <Ambient>

Defective operation of stop valve (not fully open) Clogged or broken pipe Malfunction or locked outdoor fan motor Short-cycle of outdoor unit Dirt of outdoor heat exchanger Remote controller transmitting error caused by noise interference Contact failure of the outdoor multi controller circuit board connector Defective outdoor multi controller circuit board Short-cycle of indoor unit Decreased airfl ow, clogged fi lter, or dirt on indoor unit. Malfunction or locked indoor fan motor Decreased airfl ow caused by defective inspection of outdoor temperature thermistor (It detects lower temperature than actual temperature.) Indoor LEV performance failure Malfunction of fan driving circuit SV1 performance failure Defective high-pressure sensor Defective high-pressure sensor input circuit on outdoor multi controller circuit board


Diagnosis Remedy

Chart 1 of 4

No

Yes

Yes

Yes

No

No

Yes

Yes

No

No


Is the outdoor stop valve (liquid/gas) fully open?

Does the outdoor fan rotate during the operation?

Is the indoor unit short-cycled?

Does the indoor fan rotate during the operation?



Check the outdoor fan motor.Refer to "How to check the parts" on the outdoor unit service manual.

Solve the short-cycle.

Check the indoor fan motor.Refer to "How to check the parts" on the indoor unit service manual.

(5201)

(short-cycled)

(no short-cycle)

(1302)


38OCH613

Check code

1302(UE)



Diagnosis Remedy

Chart 2 of 4

No

Yes

Yes

Yes

Yes

Yes

No

No

No

No

Is the indoor unit fi lter clogged? Clean the fi lter.(Clogged fi lter)

(No clog)


Is there dirt on the indoor heat exchanger?

Is the outdoor unit short-cycled?

Is there dirt on the outdoor heat exchanger?

Are the pipes clogged or broken?

Wash the indoor heat exchanger.

Solve the short cycle.

Wash the outdoor heat exchanger.

Defective pipes

(dirty)

(dirty)

(short-cycled)

(no dirt)

(no dirt)

(no short-cycle)


Disconnect the TH7 wiring and check the resistance.

39OCH613

Check code

1302(UE)



Diagnosis Remedy

NoIs the voltage normal? Is it free from any trace of over-heating or burning?


Check the voltage(*) and appearance of the indoor controller board.

Check the resistance of SV1.

Chart 3 of 4

*For the voltage, refer to "8-8.HOW TO CHECK THE COMPONENTS".

No

No

Yes

Yes

Yes




Replace the TH7.


Disconnect the indoor LEV wiring to check the resistance.


40OCH613

Check code

1302(UE)



Diagnosis Remedy

Chart 4 of 4


No

No

Yes


Is there a voltage(*) detected?

Replace the SV1.

Replace the 63HS.


Yes

No

<63H equipped model (63HS non-equipped)>

<63HS equipped model (63H non-equipped)>

Is the connector for outdoor multi controller circuit board 63H

disconnected or loose?Reconnect the connector or connect it tightly.


Check the 63HS voltage.


Yes

41OCH613

Check code

1500(U7)

Superheat due to low discharge temperature trouble


Abnormal if the discharge superheat is continuously detected −27°F [−15 ] or less (*) for 5 minutes even though the indoor LEV has minimum open pulse after the compressor starts operating for 10 minutes.

LEV : Electronic expansion valveTH4 : Thermistor <Compressor>63HS : High-pressure sensor

*At this temperature, conditions for the abnormality detection will not be satisfi ed if no abnormality is detected on either TH4 or 63HS.

Disconnection or loose connection of TH4 Defective holder of TH4 Disconnection of LEV coil Disconnection of LEV connector LEV performance failure


Diagnosis Remedy

Chart 1 of 2

No

Yes

No

Yes

No

Yes

Is the TH4 wiring disconnected?

Is the resistance normal?

Is there any abnormalitysuch as a half-disconnection orbreakage?

Connect the wiring properly.

Replace the TH4.

Connect the connector properly, or replace the LEV.

Check the resistance of TH4.

Check the connector contact and wiring of the indoor LEV.

Disconnect the indoor LEV wiring to check the resistance.

(disconnected)

(connected properly)

32°F [0 ]···700 k" 50°F [10 ]···410 k"68°F [20 ]···250 k" 86°F [30 ]···160 k"104°F [40 ]···104 k"


42OCH613

Check code

1500(U7)

Superheat due to low discharge temperature trouble


Diagnosis Remedy

Chart 2 of 2


Is there a resistance detected? Replace the indoor LEV.

No

No

Yes

Yes

No

Yes


Is the voltage normal?Is it free from any trace of over-heating or burning?

Is there a voltage(*) detected?


Replace the 63HS.


Check the voltage and appearance of the indoor controller board.


4343OCH613

Check code

1501(U2)

Refrigerant shortage trouble


(1) Abnormal when all of the following conditions are satisfi ed for 15 consecutive minutes:

1.The compressor is operating in HEAT mode. 2.Discharge super heat is 176°F [80 ] or more. 3.Difference between TH7 and the TH3 applies to the formula of (TH7−TH3 < 9°F [5 ]) 4.The saturation temperature converted from a high pressure sensor detects below 95°F [35 ].

(2) Abnormal when all of the following conditions are satisfi ed:1.The compressor is in operation 2.When cooling, discharge superheat is 176°F [80 ] or more, and the

saturation temperature converted from a high pressure sensor is over −40°F [−40 ].When heating, discharge superheat is 194°F [90 ] or more.

Defective operation of stop valve (not fully open) Defective thermistor Defective outdoor multi controller circuit board Indoor LEV performance failure Gas leakage or shortage Defective 63HS

TH3 : Thermistor <Outdoor liquid pipe>TH7 : Thermistor <Ambient>LEV : Electronic expansion valve63HS : High-pressure sensor


Diagnosis Remedy

Chart 1 of 2

Yes

No

No

No

No

Yes

Yes

Yes

Is the outdoor stop valve (ball valve) fully open?

Is there a refrigerant leak?


Is there any abnormality onconnectors such as a disconnection,half-disconnection or breakage?


Check relevant thermistor wirings and connector contacts of the outdoor multi controller circuit board.

Disconnect the thermistor wiring and check the resistance.

Open the stop valve (ball valve) fully.

Repair the refrigerant leak.

Connect the connector properly (Repair or replace it in case of a breakage).

(leaking)

(5104)

(no leaking)

(1501)


44OCH613

Check code

1501(U2)

Refrigerant shortage trouble


Diagnosis Remedy

Chart 2 of 2

No

No

No

Yes

Yes

Yes

Yes

Yes

No


Is there a voltage detected?

Is the voltage normal value?Is it free from any trace of over-heating or burning?



Replace the 63HS.





Disconnect the indoor LEV wiring and check the resistance.

Is there a resistance detected? Replace the thermistor.

45OCH613

Check code

1501(U2)

Closed valve in cooling mode


Abnormal if stop valve is closed during cooling operation.

Abnormal when both of the following temperature conditions are satisfi ed for 20 minutes or more during cooling operation.

1. TH22j−TH21j ] −3.6°F [−2°C] 2. TH23j−TH21j ] −3.6°F [−2°C]

Note: For indoor unit, the abnormality is detected if an operating unit satisfi es the condition.

Outdoor liquid/gas valve is closed. Malfunction of outdoor LEV (LEV1)(blockage)

TH21: Indoor intake temperature thermistorTH22: Indoor liquid pipe temperature thermistorTH23: Indoor gas pipe temperature thermistorLEV: Electronic expansion valve


Diagnosis Remedy

v

Is the outdoor stop valve(liquid/gas) fully open?

Open the outdoor stop valve (liquid/gas) fully.

No

Yes

Disconnect the outdoor LEV wiring to check the resistance.

No

Yes

Replace the outdoor LEV.



46OCH613

Check code

47

4-way valve trouble in heating mode


Abnormal if 4-way valve does not operate during heating operation.

Abnormal when any of the following temperature conditions is satisfi ed for 3 min. or more during heating operation

1. TH22j−TH21j [ −18°F [−10°C] 2. TH23j−TH21j [ −18°F [−10°C] 3. TH22j [ 37.4°F [3:] 4. TH23j [ 37.4°F [3:]

Note: For indoor unit, the abnormality is detected if an operating unit satisfi es the condition.

4-way valve failure Disconnection or failure of 4-way valve coil Clogged drain pipe Disconnection or loose connection of connectors Malfunction of input circuit on outdoor multi controller circuit board Defective outdoor power circuit board

TH21: Indoor intake temperature thermistorTH22: Indoor liquid pipe temperature thermistorTH23: Indoor gas pipe temperature thermistor


Diagnosis Remedy

Is the connector for outdoor multi controller circuit board or 4-way valve

coil disconnected or loose?Reconnect the connector or connect it tightly.Yes

Disconnect the connector for outdoor multi controller circuit board or 4-way valve coil to check the resistance.

No Replace the 4-way valve.


Is the detected voltage normal?Is it free from any trace of over-heating

or burning?



No

No

Yes

1508(EF)

OCH613

Check code


Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after the compressor starts operating.

Closed stop valve Decrease of power supply voltage Looseness, disconnection, or wrong phase of compressor wiring connection Model selection error on indoor controller board or outdoor multi controller circuit board Defective compressor Defective outdoor power circuit board


Diagnosis Remedy

4100(UF)

Compressor current interruption (Locked compressor)Chart 1 of 2

Yes

Yes

Yes

No

No

No

Is the stop valve (liquid/gas) fully open?

Is the power supply voltage normal?

Are they set properly?


• Check the looseness, disconnection, or breakage of compressor wiring.

• Ensure power supply from the facility. (Check for power supply open phase.)

Set the model selection switch correctly, then restart.

Check the stop valve.

Check the power supply voltage.

Check if the model selection switch is set correctly on the indoor controller board or outdoor multi controller circuit board.

Turn the power OFF to check for looseness, disconnection, or wrong phase of compressor wiring connection.


48OCH613

Check code

4100(UF)

Compressor current interruption (Locked compressor)


Diagnosis Remedy

Chart 2 of 2

Yes

Yes

No

No

Are they connected properly?

Is the compressor faulty grounded?

Connect the compressor wiring (U, V and W phase) properly, then turn the power back ON.

Replace the outdoor power circuit board (Defective outdoor power circuit board).

Replace the compressor (Defective compressor).

Check whether the compressor is faulty grounded or not.


49OCH613

Check code


Abnormal if overcurrent of DC bus or compressor is detected after 30 seconds since the compressor starts operating.

Closed outdoor stop valve Decrease of power supply voltage Looseness, disconnection, or wrong phase of compressor wiring connection Model selection error on indoor controller board or outdoor multi controller circuit board Defective compressor Defective outdoor power circuit board Defective outdoor multi controller circuit board Malfunction of indoor/outdoor unit fan Short-cycle of indoor/outdoor unit


Diagnosis Remedy

4210(UP)

Compressor overcurrent interruptionChart 1 of 2

Yes

Yes

Yes

No

No

No

Is the stop valve (liquid/gas) fully open?

Is the power supply voltage normal?

Are they set properly?


• Check the looseness, disconnection, or breakage of compressor wiring.

• Ensure power supply from the facility. (Check for power supply open phase.)

Set the model selection correctly.

Check the outdoor stop valve.

Check whether the power supply voltage is normal or not.

Check if the model selection switch is set correctly on the indoor controller board or outdoor multi controller circuit board.

Turn the power OFF to check for looseness, disconnection, or wrong phases of the compressor wiring.


50OCH613

Check code

4210(UP)

Compressor overcurrent interruption


Diagnosis Remedy

Chart 2 of 2

No

Yes

Yes

No

Yes

Yes

No

Yes

No

No

Are they connected properly?Connect the compressor wiring (U, V and W phase) properly, then turn the power back ON.


Does it operate normally?

Are those units short-cycled?

Are the voltage among the phases U-V, V-W and W-U different?


Check the DC fan motor.

Remove factor(s) causing the short-cycle.

Replace the compressor.

Replace the outdoor power circuit board.


Check the operation of indoor/outdoor fan motors.

Check for indoor/outdoor short-cycle.

Disconnect the compressor wiring from the outdoor power circuit board, then check the voltage among each phases U, V and W during test run (SW7-1 ON).

Make sure to perform a voltage check with the same performing frequencies.


(short-cycled)

(no short-cycled)

51OCH613

Check code


Abnormal if any of following symptoms are detected;

●Decrease of DC bus voltage to 200 V●Increase of DC bus voltage to 400 V●DC bus voltage stays at 310 V or less for consecutive 30 seconds when

the operational frequency is over 20 Hz.●When any of the following conditions are satisfied while the detection

value of primary current is 0.1 A or less.

1. The operational frequency is 40 Hz or more. 2. The compressor current is 6 A or more.

1 Decrease/increase of power supply voltage, 2 Primary current sensor failure3 Disconnection of compressor wiring 4 Malfunction of 52C5 Disconnection or contact failure of CN52C6 Defective outdoor power circuit board7 Malfunction of 52C driving circuit on outdoor multi

controller circuit board8 Disconnection of CN59 Disconnection of CN20 Malfunction of primary current detecting circuit on

outdoor power circuit board

●Diagnosis of defectivesMake sure to turn the power OFF before connecting/disconnectingany connectors, or replacing boards.

Diagnosis Remedy

4220(U9)

Undervoltage/Overvoltage/PAM error/L1 open-phase/Primary current sensor error/Power synchronization signal error

The black square (■) indicates a switch position.

Chart 1 of 2

No

No

No

No

No

Yes

Yes

Yes

Yes

Yes

6

3

7,8

Is there any abnormality on wirings?

Which sub code is displayed?

Does a DC bus voltage raise to approx. 350 V at PAM driving?

Is there any abnormality on PAM wirings?

Is there any abnormality at thePAM circuit on the outdoor power

circuit board?

Is there any abnormality atthe PAM power supply circuit on the

outdoor multi controller circuit board?

a. Disconnection of compressor wiringb. Disconnection of CN52C c. Disconnection of CN5d. Disconnection of CN2

The sub codes are displayed The sub codes are displayed by an operation of SW1 on by an operation of SW1 on the outdoor multi controller the outdoor multi controller circuit board.circuit board.

The sub codes are displayed by an operation of SW1 on the outdoor multi controller circuit board.

Check the power supply facility.

Correct the wiring.


Replace the outdoor multi controller circuit board. Breakage of wiring for PAM controlling power supply, and such.


ONOFF

1 2 3 4 5 6 7 8

SW1 Setting Display on LED1,21 2 3 4 5 6 7 8

3: PAM error3: PAM error6: Input sensor trouble6: Input sensor trouble7: Shortage voltage trouble7: Shortage voltage trouble8: Overvoltage trouble8: Overvoltage trouble

3: PAM error 6: Primary current sensor trouble7: Undervoltage trouble8: Overvoltage trouble


52OCH613

Check code

4220(U9)

Undervoltage/Overvoltage/PAM error/L1 open-phase/Primary current sensor error/Power synchronization signal error


Diagnosis Remedy


Chart 2 of 2


Yes

Yes

No

Yes No

No

Yes

7,8 6

The bus voltage can be displayed by an operation of SW1 on the outdoor multi controller circuit board.


Is the power supply normal?

Is the bus voltage normal?

The difference of the voltage between the one read by the LED1 and 2, and the one at

the test points listed above is large.

• Decrease of power supply voltage• L1 open-phase


Replace the outdoor power circuit board(Trouble of an input current detection circuit is suspected).

Check the power supply facility(Check if a receiving electricity is lowered).

Check the bus voltage read by the microprocessor with an operation of SW1 on the outdoor multi controller circuit board.

Check the bus voltage at the test points listed below on the outdoor power circuit board using a tester.CNDC 1-2pin

ONOFF

1 2 3 4 5 6 7 8

SW1 Setting Display on LED1,2

0–999.9

Unit

V

53OCH613

Check code


Abnormal if TH8 detects a temperature outside the specifi ed range during compressor operation.

TH8: Thermistor <Heat sink>

Blocked outdoor fan Malfunction of outdoor fan motor Blocked airfl ow path Rise of ambient temperature Characteristic defect of thermistor Malfunction of input circuit on outdoor power circuit board Malfunction of outdoor fan driving circuit


Diagnosis Remedy

Is 5110 displayed when restart?

4230(U5)

Heat sink temperature trouble

No

Yes

No

No

Yes

Yes

No

No

Yes

Yes


Does the fan rotate during compressor operation?

Is there any obstacle which blocks an airfl ow around the heat

sink?

Is there any abnormality suchas a disconnection, looseness orbreakage?

Is the resistance normal?



Replace the thermistor(Defective thermistor).


Improve the airfl ow path.

Connect the wiring/connector properly.Replace it in case of a breakage.

Check the wiring and connector connection TH8.

Check the resistance of TH8.

(air path blocked)

(no obstacle)

32°F [0 ]···180 kΩ 77°F [25 ]···50 kΩ122°F [50 ]···17 kΩ 158°F [70 ]···8 kΩ194°F [90 ]···4 kΩ

TH8 temp. - resistance characteristic

54OCH613

Check code


Abnormal if both of the following conditions are satisfi ed:1. Overcurrent of DC bus or compressor is detected during compressor

operation. 2. Inverter power module is determined to be defected.

Short-circuit caused by looseness or disconnection of compressor wiring Defective compressor Defective outdoor power circuit board


Diagnosis Remedy

4250(U6)

Power module trouble or overcurrent trouble

Yes

Yes

No

No

Are they connected properly?

Is the check code <4250> still displayed?

Connect the compressor wiring (U, V andW phase) properly, then turn the powerback ON.

Replace the outdoor power circuit board or the outdoor multi controller circuit board(Defective outdoor power circuit board).

Replace the compressor(Defective compressor).

Turn the power OFF to check for looseness or disconnection of the compressor wiring.

1 Disconnect the compressor wiring (U-V-W phase).

2 Turn ON the SW7-1(*) on the outdoor multi controller circuit board.

3 Operate the unit.

* SW7-1 ON: Ignore 5300(UH) error.

55OCH613

Check code


Abnormal if no rotational frequency is detected, or detected a value outside the specifi ed range during fan motor operation.

Malfunction of fan motor Disconnection of CNF connector Defective outdoor multi controller circuit board


Diagnosis Remedy

4400(U8)

Fan trouble (Outdoor unit)

No

No

Yes

Yes

Yes

No

Is the fuse melting?


Is the voltage normal?



Replace the fan motor.

Check the fuse on the outdoor multi controller circuit board.

Check the fan motor connector (CNF1 and CNF2) for a disconnection or looseness.

Remove the fan motor by disconnecting the fan motor connector CNF1 and CNF2, then check the voltage of outdoor multi controller circuit board"Test points are;

VDC approx. 310 to 350 V DC (fan connector 1-4)VCC approx. 15 V DC (fan connector 5-4)"

(melting)

(Not melting)*For the detail, refer to "Check method of DC fan motor (fan motor/outdoor multi controller circuit board" in chapter 8-7.

Replace the outdoor controller board.Replace the defective fan motor.*

56OCH613

Check code


Abnormal if TH4 detects to be open/short.(The open/short detection is disabled for 10 minutes after compressor starts, during defrosting operation, or for 10 minutes after returning from the defrosting operation.)Open: 37.4°F [3 ] or lessShort: 422.6°F [217 ] or more TH4: Thermistor <Compressor>

Disconnection or contact failure of connectors Characteristic defect of thermistor Defective outdoor multi controller circuit board


Diagnosis Remedy

−99.9–999.9

5101(U3)

Compressor temperature thermistor (TH4) open/short


<Detected in outdoor unit>

No

Yes

Yes

Yes

No

No


Is the detected resistance normal?

Is the detected temperature normal?

Connect the wiring/connector properly.Replace the connector in case of a breakage.


Replace the outdoor multi controller circuit board(Malfunction of thermistor circuit).

No abnormality( A connector contact failure is suspected.)

Check the wiring and connector connection of TH4.

Disconnect the connector to check the resistance of TH4 using a tester.

Check a temperature of TH4.

The detected temperature of TH4 can be displayed by an operation of SW1 on the outdoor multi controller circuit board.

SW1 Setting

ONOFF

Display on LED1, 2 Unit

−99.9–999.9 °F41 2 5 6 7 83

57OCH613

Check code


Abnormal if TH6 detects to be open/short.(The open/short detection is disabled during 10 seconds to 10 minutes after compressor starts, during defrosting operation, or for 10 minutes after returning from the defrosting operation.)Open: −40°F [−40 ] or lessShort: 194°F [90 ] or more TH6: Thermistor <Suction pipe>



Diagnosis Remedy

5102(U4)

Suction pipe temperature thermistor (TH6) open/short


<Detected in outdoor unit>

No

Yes

Yes

Yes

No

No






Replace the outdoor multi controller circuit board (Malfunction of thermistor circuit).




Check a temperature of TH6.ONOFF

1 2 3 4 5 6 7 8

SW1 Setting Display on LED1,2 Unit

°F99.9–999.9


58OCH613

Check code


Abnormal if TH3 detects to be open/short.(The open/short detection is disabled during 10 seconds to 10 minutes after compressor starts, during defrosting operation, or for 10 minutes after returning from the defrosting operation.)Open: −40°F [−40 ] or lessShort: 194°F [90 ] or more TH3: Thermistor <Outdoor liquid pipe>



Diagnosis Remedy

5105(U4)

Outdoor liquid pipe temperature thermistor (TH3) open/short


SW1 Setting

ONOFF


−99.9–999.9 °F

41 2 5 6 7 83

No

Yes

Yes

Yes

No

No




Connect the wiring/connector properlyReplace it in case of a breakage.







The detected temperature of TH3 can be displayed by an operation of SW1 on the outdoor multi controller circuit board

59OCH613

Check code

5106(U4)

Ambient thermistor (TH7) open/short


Abnormal if TH7 detects to be open/short.Open: −40°F [−40 ] or lessShort: 194°F [90 ] or more TH7: Thermistor <Ambient>



Diagnosis RemedyThe black square (■) indicates a switch position.

SW1 Setting

ONOFF


−99.9–999.9 °F

41 2 5 6 7 83

No

Yes

Yes

Yes

No

No











The detected temperature of thermistor (TH7) The detected temperature of thermistor (TH7) can be displayed by an operation of SW1 on the can be displayed by an operation of SW1 on the outdoor multi controller circuit board.outdoor multi controller circuit board.The detected temperature of TH7 can be displayed by an operation of SW1 on the outdoor multi controller circuit board.

60OCH613

Check code

5109(U4)

HIC pipe temperature thermistor (TH2) open/short


Abnormal if TH2 detects to be open/short.Open:−40°F [−40 ] or lessShort: 194°F [90 ] or more TH2: Thermistor <HIC pipe>



Diagnosis RemedyThe black square (■) indicates a switch position.

No

Yes

Yes

Yes

No

No










Check a temperature of TH2.ONOFF

1 2 3 4 5 6 7 8


99.9–999.9 °F


61OCH613

Check code

5110(U4)

Heat sink temperature thermistor (TH8) open/short


Abnormal if TH8 (Internal thermistor) detects to be open/short.Open: −31.2°F [−35.1 ] or moreShort: 338.5°F [170.3 ] or less

TH8: Thermistor <Heat sink>



Diagnosis Remedy

outdoor


SW1 Setting

ONOFF


−99.9–999.9 °F

41 2 5 6 7 83

No

Yes

Yes

Yes

No

No

Yes

No











The detected temperature of thermistor (TH8) The detected temperature of thermistor (TH8) can be displayed by an operation of SW1 on the can be displayed by an operation of SW1 on the outdoor multi controller circuit board.outdoor multi controller circuit board.The detected temperature of TH8 can be displayed by an operation of SW1 on the outdoor multi controller circuit board.

Is it a model with internal thermistor?

62OCH613

Check code

5201(F5)

High pressure sensor (63HS) trouble


When the detected pressure in the high pressure sensor is 14 PSIG or less during operation, the compressor stops operation and enters into an anti-restart mode for 3 minutes. When the detected pressure is 14 PSIG or less immediately before restarting, the compressor falls into an abnormal stop with a check code <5201>. For 3 minutes after compressor restarting, during defrosting operation, and for 3 minutes after returning from defrosting operation, above mentioned symptoms are not determined as abnormal.

Defective high pressure sensor Decrease of internal pressure caused by gas leakage Disconnection or contact failure of connector Malfunction of input circuit on outdoor multi controller circuit board


Diagnosis Remedy


63HS: High pressure sensor

SW1 Setting

ONOFF


−99.9–999.9 PSIG

41 2 5 6 7 83

No

Yes

Yes

No

No


Is the detected internal pressure normal?

Is the detected pressure normal?


Check the refrigerant circuit, and refi ll refrigerant after repairing the leakage.

Replace the 63HS.

Replace the outdoor multi controller circuit board (Defective current sensor circuit).

Check the wiring and connector connection.

Check an internal pressure of the refrigerant circuit.

Check the detected pressure in 63HS, then compare it with the internal pressure.

The detected pressure in 63HS can be displayed by an operation of SW1 on the outdoor multi controller circuit board.

63OCH613

Check code

5202(F3)

Low pressure sensor (63LS) trouble


When the detected pressure in the low pressure sensor is −33 PSIG or less, or 329 PSIG or more during operation, the compressor stops operation with a check code <5202>. For 3 minutes after compressor restarting, during defrosting operation, and for 3 minutes after returning from defrosting operation, above mentioned symptoms are not determined as abnormal.

Defective low pressure sensor Decrease of internal pressure caused by gas leakage Disconnection or contact failure of connector Malfunction of input circuit on outdoor multi controller circuit board


Diagnosis Remedy


63LS: Low pressure sensor

*For the pressure, refer to "8-8.HOW TO CHECK THE COMPONENTS".

No

Yes

Yes

No

No


Is the detected internal pressure normal?

Is the detected pressure normal?


Check the refrigerant circuit, and refi ll refrigerant after repairing the leakage.

Replace the 63LS.


Check the wiring and connector connection.

Check an internal pressure of the refrigerant circuit.

Check the detected pressure in 63LS(*), then compare it with the internal pressure. ON

OFF1 2 3 4 5 6 7 8


99.9–999.9 PSIG

The detected pressure in 63LS can be displayed by an operation of SW1 on the outdoor multi controller circuit board.

64OCH613

Check code

5300(UH)

Current sensor trouble/Primary current error


Abnormal if any of the following conditions are detected:1 Primary current sensor detects any of the following conditions (single

phase unit only):

2 Secondary current sensor detects 25 A or more.3 Secondary current sensor detects 1.0 A or less.

Decrease/trouble of power supply voltage Disconnection of compressor wiring Current sensor trouble on outdoor power circuit board Wiring through current sensor (penetration type) is not done.


Diagnosis Remedy


Ambient temperature

10 consecutive- second detection One-time detection

TH7 > 37.4°F [3:] 37 A 40 ATH7 [ 37.4°F [3:] 40 A 43A

(Three-phase)

Yes

Yes

No

No

Yes

No Is the power supply single phase?

Is there any abnormality such as a disconnection,

looseness, or breakage?

The power supply voltage might be decreased or abnormal.Check the power supply facility.

Connect the compressor wiring properly.

Replace the outdoor power circuit board(Malfunction of current sensor circuit).

Check the power specifi cation of the outdoor unit.

Check the value on the secondary current sensor during the error.

(Single-phase)

Does it satisfy the condition 1?

No

SW1 Setting

ONOFF


0–999.9 Arms

41 2 5 6 7 83

The secondary current sensor value during the error can be displayed by an operation of SW1 on the outdoor multi controller circuit board.

Does it satisfy the condition 2 or 3? Check the compressor wiring.

65OCH613

Check code


Abnormal if 2 or more units with the same address are existing. There are 2 units or more with the same address in their controller among outdoor unit, indoor unit, Fresh Master, Lossnay or remote controller Noise interference on indoor/outdoor connectors


Diagnosis Remedy

6600(A0)

Duplex address error

No

Yes

Yes

No

Is there any unit with the same address?


Correct the address, and turn the power OFF of indoor/outdoor unit, Fresh Master or Lossnay simultaneously for 2 minutes or more, then turn the power back ON.

Malfunction of sending/receiving circuit on indoor/outdoor unit is suspected.

There is no abnormality on the AC unit.It might be caused by an external noise, so check the transmission line to remove the factor(s).

Search for a unit with the same address as the source of abnormality.

Turn the power back ON.

66OCH613

Check code


Abnormal if the transmission line shows "1" although the transmission processor transmitted "0".

A transmitting data collision occurred because of a wiring work or polarity change has performed while the power is ON on either of the indoor/outdoor unit, Fresh Master or Lossnay Malfunction of transmitting circuit on transmission processor Noise interference on indoor/outdoor connectors


Diagnosis Remedy

6602(A2)

Transmission processor hardware error

Yes

Yes

No

No

A wiring work was performed while the power OFF.


If the wiring work was performed while the power ON, turn the power OFF of indoor/outdoor unit, Fresh Master or Lossnay simultaneously for 2 minutes or more, then turn the power back ON.

Replace the indoor/outdoor controller board.



67OCH613

Check code


Over error by collisionAbnormal if no-transmission status caused by a transmitting data collision is consecutive for 8 to 10 minutes. Abnormal if a status, that data is not allowed on the transmission line because of noise and such, is consecutive for 8 to 10 minutes.

The transmission processor is unable to transmit due to a short-cycle voltage such as noise is mixed on the transmission line. The transmission processor is unable to transmit due to an increase of transmission data amount caused by a miswiring of the terminal block (transmission line) (TB3) and the terminal block (centralized control line) (TB7) on the outdoor unit. The share on transmission line becomes high due to a mixed transmission caused by a malfunction of repeater on the outdoor unit, which is a function to connect/disconnect transmission from/to control system and centralized control system.


Diagnosis Remedy

6603(A3)

Transmission bus BUSY error

No

Yes

Yes

Yes

No

No

Is the transmission line miswired?

Is the transmission line miswired?


Correct the wiring, then turn the power back ON.

Correct the wiring, then turn the power back ON.

Replace the indoor/outdoor controller board.


Check whether the transmission line to the indoor unit, Fresh Master, Lossnay or remote controller is miswired to the terminal block (TB7) on outdoor unit or not.

Check whether the transmission line with the other refrigerant system of the indoor unit, Fresh Master or Lossnay is miswired to the terminal block (TB3) on outdoor unit or not.


(miswired)

(miswired)

(Not miswired)

(Not miswired)

68OCH613

Check code


Abnormal if the data of unit/transmission processor were not normally transmitted. Abnormal if the address transmission from the unit processor was not normally transmitted.

Accidental disturbance such as noise or lightning surge Hardware malfunction of transmission processor


Diagnosis Remedy

6606(A6)

Signal communication error with transmission processor

Yes

NoDoes it operate normally? Replace the controller.(Defect of error source controller).


Turn the power OFF of indoor/outdoor unit, Fresh Master, Lossnay and remote controller simultaneously for 2 minutes or more, then turn the power back ON.

69OCH613

Check code


Represents a common error detectionAn abnormality detected by the sending side controller when receiving no ACK from the receiving side, though signal was once sent. The sending side searches the error in 30 seconds interval for 6 times continuously.

The previous address unit does not exist since the address switch was changed while in electric continuity status. Decline of transmission voltage/signal caused by tolerance over on transmission line·At the furthest end: 656 ft [200 m]·On remote controller line: 39 ft [12 m] Decline of transmission voltage/signal due to unmatched transmission line types·Types for shield line: CVVS, CPEVS or MVVS·Line diameter: AWG 16 [1.25 E] or more Decline of transmission voltage/signal due to excessive number of connected units Malfunction due to accidental disturbance such as noise or lightning surge Defect of error source controller

The cause of displayed address and attribute is on the outdoor unit side.An abnormality detected by the indoor unit if receiving no ACK when transmitting signal from the indoor unit to the outdoor unit.

Contact failure of indoor/outdoor unit transmission line. Disconnection of transmission connector (CN2M) on indoor unit. Malfunction of sending/receiving circuit on indoor/outdoor unit.

The cause of displayed address and attribute is on the indoor unit side.An abnormality detected by the remote controller if receiving no ACK when sending data from the remote controller to the indoor unit.

While operating with multi refrigerant system indoor units, an abnormality is detected when the indoor unit transmit signal to the remote controller during the other refrigerant-system outdoor unit is turned OFF, or within 2 minutes after it turned back ON. Contact failure of indoor unit or remote controller transmission line Disconnection of transmission connector (CN2M) on indoor unit Malfunction of sending/receiving circuit on indoor unit or remote controller

The cause of the displayed address and attribute is on the remote controller sideAn abnormality detected by the indoor unit if receiving no ACK when transmitting signal from the indoor unit to the remote controller.

While operating with multi refrigerant system indoor units, an abnormality is detected when the indoor unit transmit signal to the remote controller during the other refrigerant-system outdoor unit is turned OFF, or within 2 minutes after it turned back ON. Contact failure of indoor unit or remote controller transmission line Disconnection of transmission connector (CN2M) on indoor unit Malfunction of sending/receiving circuit on indoor unit or remote controller

6607(A7)

No ACK errorChart 1 of 4

70OCH613

Check code

6607(A7)

No ACK error


The cause of displayed address and attribute is on the Fresh Master side.An abnormality detected by the indoor unit if receiving no ACK when transmitting signal from the indoor unit to the Fresh Master.

While the indoor unit is operating with multi refrigerant system Fresh Master, an abnormality is detected when the indoor unit transmits signal to the remote controller while the outdoor unit with the same refrigerant system as the Fresh Master is turned OFF, or within 2 minutes after it turned back ON. Contact failure of indoor unit or Fresh Master transmission line Disconnection of transmission connector (CN2M) on indoor unit or Fresh Master Malfunction of sending/receiving circuit on indoor unit or Fresh Master

The cause of displayed address and attribute is on Lossnay side.An abnormality detected by the indoor unit if receiving no ACK when the indoor unit transmit signal to the Lossnay.

An abnormality is detected when the indoor unit transmits signal to Lossnay while the Lossnay is turned OFF. While the indoor unit is operating with the other refrigerant Lossnay, an abnormality is detected when the indoor unit transmits signal to the Lossnay while the outdoor unit with the same refrigerant system as the Lossnay is turned OFF, or within 2 minutes after it turned back ON. Contact failure of indoor unit or Lossnay transmission line Disconnection of transmission connector (CN2M) on indoor unit Malfunction of sending/receiving circuit on indoor unit or Lossnay

The controller of displayed address and attribute is not recognized The previous address unit does not exist since the address switch was changed while in electric continuity status. An abnormality detected at transmitting from the indoor unit since the Fresh Master/Lossnay address are changed after synchronized setting of Fresh Master/Lossnay by the remote controller.

Chart 2 of 4

71OCH613

Check code

6607(A7)



Diagnosis Remedy

*For the tolerance, refer to the Installation Manual.

Yes

Yes

No

No

No

Yes

Yes

No

The transmission line is connected properly.

It is not exceeding the tolerance.

Check the transmission line whether it exceeds the tolerance(*) or not.

Check whether the correct kind of transmission line is used or not.

Correct it within the tolerance, then perform the procedure 1.

Connect the transmission line properly, then perform the procedure 1.

Is the abnormality reproduced?

Is it set properly?


Set the address properly, then perform the procedure 1.

Check the address switch on the source of abnormality.

Check the transmission line for a disconnection and looseness(on the terminal board and connector).


Procedure 1:


72OCH613

Check code

6607(A7)



Diagnosis Remedy

Yes

Yes

Yes

Yes

No

No

No

NoIs the correct kind of transmission line used?

Is it operating in multi refrigerant system?

Is the address information correct?


When operating in a multi refrigerant system (2 or more outdoor units), check if any of the indoor unit stores non-existing address information.

Replace the controller board which the displayed address/attribute belongs to.


Defective outdoor controller board (repeater circuit) on the outdoor unit is suspected.Replace the outdoor controller board one by one, then check for normal operation.

Delete the unnecessary address using a manual setting function on the remote controller.(Only for operating in a system with the Fresh Master/Lossnay is connected, or in a multi refrigerant system with group setting is set).

When operating in a single refrigerant system (single indoor unit), the controller of the displayed address/attribute is defective.

Apply the correct kind of transmission line, then perform the procedure 1.

Complete

73OCH613

Check code

6608(A8)


Abnormal if receiving no response command while already received ACK. The sending side searches the error in 30 seconds interval for 6 times continuously.

Continuous failure of transmission due to noise, etc Decline of transmission voltage/signal caused by tolerance over on transmission line·At the furthest end: 656 ft [200 m]·On remote controller line: 39 ft [12 m] Decline of transmission voltage/signal due to unmatched transmission line types·Types for shield line: CVVS, CPEVS or MVVS·Line diameter: AWG 16 [1.25 E] or more Accidental malfunction of error source controller


Diagnosis Remedy

No response frame error

*For the tolerance, refer to the Installation Manual.

Yes

Yes

Yes

Yes

No

No

No

No


The transmission line is connected properly.

It is not exceeding the tolerance.

Is correct kind of transmission line used?

Replace the controller board(Defect of the controller which the displayed address/attribute belong to).

Connect the transmission line properly.

Correct it within the tolerance.

Replace it with the correct kind of transmission line.

There is no abnormality on the AC unit.Check the transmission line for transmission wave and noise.


Check the transmission line for a disconnection and looseness(on the terminal board and connector).

Check the transmission line whether it exceeds the tolerance(*) or not.

Check whether the correct kind of transmission line is used or not.

74OCH613

Check code

6831,6834(E0/E4)

MA communication receive error


Detected in remote controller or indoor unit: When the main or sub remote controller cannot receive signal from indoor unit which has the "0" address. When the sub remote controller cannot receive signal. When the indoor controller board cannot receive signal from remote controller or another indoor unit. When the indoor controller board cannot receive signal.

Contact failure of remote controller wirings Irregular Wiring (A wiring length, number of connecting remote controllers or indoor units, or a wiring thickness does not meet the conditions specifi ed in the chapter "Electrical Work" in the indoor unit Installation Manual.) Malfunction of the remote controller sending/receiving circuit on indoor unit with the LED2 is blinking. Malfunction of the remote controller sending/receiving circuit Remote controller transmitting error caused by noise interference

●Diagnosis of defectivesMake sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards

Diagnosis Remedy

Check the remote controller for main-sub setting.

Conduct the Remote Controller Diagnosis 2 or more times.

Is "RC NG" displayed?


No

Is "RC 6832" or "ERC01" to "ERC66"

displayed?

No abnormalityIt might be caused by an external noise, so check the transmission line.Yes

No

Yes

Chart 1 of 2

No

No

No

Yes

Yes

No

Yes

Yes

Is the check code <6831> or <6834>still

displayed?

Is there only 1 remote controller set as the main controller?

Does "HO" or "Please wait" disappear within

6 minutes?

Is "RC OK" displayed on all remote controllers?

Set one remote controller to main remote controller, and the other to sub.

Disconnect and reconnect the connector CN3A, then turn the power back ON.

Note:It takes 6 seconds at maximum until the result is displayed.


No abnormalityA connector or wiring contact failure is suspected.

Replace the remote controller.

Replace the indoor controller board with the LED2 is blinking.

75OCH613

Check code


Diagnosis Remedy

6831,6834(E3/E5)

MA communication receive errorChart 2 of 2

No abnormalityIt might be caused by an external noise, so check the transmission line to remove the factor(s).

No

Yes

Is the wiring connected properly, meeting the condition?

Connect the wiring properly as specifi ed in the chapter "Electrical Work" in the indoor unit Installation Manual.

Refer to the chapter "Electrical Work".


76OCH613

Check code

Chart 1 of 2

6832,6833(EF)

MA communication send error


Detected in remote controller or indoor unit. There are 2 remote controllers set as main. Malfunction of remote controller sending/receiving circuit Malfunction of sending/receiving circuit on indoor controller board Remote controller transmitting error caused by noise interference


Diagnosis Remedy

Check the remote controller for main-sub setting.

Conduct the Remote Controller Diagnosis more than 2 times.

No

No

Is the check code <6832> or <6833> still

displayed?

Is there only 1 remote controller set as the main controller?

Set one remote controller to main remote controller, and the other to sub.

Disconnect and reconnect the connector CN3A, then turn the power back ON.

Note:It takes 6 seconds at maximum until the result is displayed.

No abnormalityA connector or wiring contact failure is suspected.

Yes


Is "RC NG" displayed?

Turn the power back ON

No

Is "RC 6832" or "ERC01" to "ERC66"

displayed?

No abnormalityIt might be caused by an external noise, so check the transmission line.Yes

No

Yes

No

Yes

Yes

NoDoes "HO" or "Please wait" disappear within

6 minutes?

Is "RC OK" displayed on all remote controllers?

Replace the remote controller.

Replace the indoor controller board with the LED2 is blinking.

Yes

77OCH613

Check code


Diagnosis Remedy

6832,6833(EF)

MA communication send errorChart 2 of 2

No abnormalityIt might be caused by an external noise, so check the transmission line to remove the factor(s).

No

Yes

Is the wiring connected properly, meeting the condition?

Connect the wiring properly as specifi ed in the chapter "Electrical Work" in the indoor unit Installation Manual.

Refer to the chapter "Electrical Work".


78OCH613

Check code


When the total capacity of connected indoor units exceeds the specifi ed capacity (130% of the outdoor unit capacity), a check code <7100> is displayed.

The total capacity of connected indoor units exceeds the specifi ed capacity.· P60 model: up to code 56

The model name code of the outdoor unit is registered wrongly.


Diagnosis Remedy

7100(EF)

Total capacity error

No

Yes

Yes

No

No

Yes

Is it set properly?

Is it set properly?

Is the total under 130% of outdoor unit capacity?

Check the capacity code switch (SW2 on the indoor controller board) on the connected indoor unit.

Check the model selection switch (SW4 on the outdoor multi controller circuit board) of the outdoor unit.

Check the total capacity of connected indoor units.

Correct it so that the total capacity of connected indoor units is under 130% of the outdoor unit capacity.

Set the switch properly.

Set the switch properly.

Complete

79OCH613

Check code


When a connected indoor unit is incompatible, a check code <7101> is displayed.

The model name of connected indoor unit (model code) is read as incompatible.The connectable indoor units are:· P60 model: P06 to P72 model (code 4 to 40)


Diagnosis Remedy

7101(EF)

Capacity code error

Yes

NoIs it set properly? Set the switch properly.

The model code of the connected indoor unit can be displayed by an operation of SW1 on the outdoor unit.

Check the model selection switch (refer to indoor unit service manual) of the connected indoor unit.

80OCH613

Check code


When the connected indoor unit exceeds the limit, a check code <7102> is displayed.

Connecting more indoor units and branch boxes than the limit.Abnormal if connecting status does not comply with the following limit;

Connectable up to 12 indoor units Connect at least 1 indoor unit (Abnormal if connected none). Connectable only 1 ventilation unit


Diagnosis Remedy

7102(EF)

Connecting unit number error

Yes

No

No

Yes

Is an indoor unit connected?

Does it exceed the limit?

Connect indoor unit.

Connect less number of units than the limit.

The model code of the connected indoor unit can be displayed by an operation of SW1 on the outdoor unit.

Check whether the M-NET line to the indoor unit is connected or not.

Check if at least 1 indoor unit is connected.

Check whether the connecting unit exceeds the limit or not.

81OCH613

Check code


The address setting of connected unit is wrong. There is a unit without correct address setting in the range specifi ed in "7-4. SYSTEM CONTROL".


Diagnosis Remedy

7105(EF)

Address setting error

<Outdoor unit>

Yes

NoIs the address setting correct?

Set the address properly, then turn the power OFF of indoor/outdoor unit, Fresh Master, Lossnay and remote controller simultaneously for 2 minutes or more, and turn the power back ON.


Check whether the outdoor unit address is set in 000, or in the range of 51 to 100.

82OCH613

Check code

83


When the connected indoor unit is not connectable with the outdoor unit, the outdoor unit detects the error at start-up.

Connecting indoor unit (s) which is not authorized to connect to the outdoor unit.


Diagnosis Remedy

7130(EF)

Incompatible unit combination error

NoIs the indoor unit authorized to connect with the outdoor unit?

Replace the indoor unit (s) to the connectable one.

Refer to the service manual of the outdoor unit or the connected indoor unit for the authorized combination.

Yes

No

Yes

Check whether the model selection switch is set correctly.

Are they correct?Set the model selection switch correctly, then restart.

Replace the outdoor controller board.

OCH613

84

8-2. REMOTE CONTROLLER DIAGNOSISFor the detailed procedure, refer to the remote controller's manuals.

Even the cooling (heating) operation selection button is pressed, the indoor unit cannot be operated.The auto vane runs freely.

Fan setting changes duringheating.

Fan stops during heating operation.Fan does not stop while operation has been stopped.No setting of fan while start SW has been turned on.

Indoor unit remote controller shows “HO” or “PLEASE WAIT ” indicator for about 2 minutes when turning ON power supply.Drain pump does not stopwhile unit has been stopped.Drain pump continues to operate while unit has been stopped.

"Cooling (Heating)" blinks

Normal display

Normal display

"Defrost "

Light out

STAND BY

“HO” blinks“PLEASE WAIT” blinks

Light out

—

The indoor unit can not cool (Heat) if other indoor units are heating(Cooling).

Because of the control operation of auto vane, it may change overto horizontal blow automatically from the downward blow in cooling in cause the downward blow operation has been continued for 1 hour. At defrosting in heating, hot adjusting and thermostat OFF, it automatically changes over to horizontal blow.Ultra-low speed operation is commenced at thermostat OFF.Light air automatically change over to set value by time or piping temperature at thermostat ON.The fan is to stop during defrosting.

Fan is to run for 1 minute after stopping to exhaust residual heat (only in heating).Ultra-low speed operation for 5 minutes after SW ON or until piping temperature becomes 35°C. There low speed operate for 2 minutes, and then set notch is commenced. (Hot adjust control)System is being driven.Operate remote controller again after “HO” or “PLEASE WAIT”disappears.

After a stop of cooling operation, unit continues to operate drain pump for 3 minutes and then stops it.Unit continues to operate drain pump if drainage is generated, even during a stop.

Symptom Display of remote controller CAUSE

8-4. THE FOLLOWING SYMPTOM DO NOT REPRESENT TROUBLE (EMERGENCY)

8-3. REMOTE CONTROLLER TROUBLEFor the troubleshooting, refer to the remote controller's manuals.

OCH613

85

8-5. INTERNAL SWITCH FUNCTION TABLEPUMY-P60NKMU1(-BS)

Sw

itch

Step

Func

tion

Ope

ratio

n in

Eac

h S

witc

h S

ettin

gR

emar

ksP

urpo

seA

dditi

onal

Info

rmat

ion

ON

OFF

Whe

n to

Set

SW

U1

ones

dig

itS

WU

2 te

ns d

igit

Rotary switch

Bef

ore

turn

ing

the

pow

er O

N

<Ini

tial s

ettin

gs>

SW

1 D

igita

lD

ispl

ayS

witc

h1–

8Ca

n be s

et eit

her d

uring

op

erati

on or

not.

<Ini

tial s

ettin

gs>

SW

2Fu

nctio

nS

witc

h

1S

elec

ts o

pera

ting

syst

em s

tartu

pW

ith ce

ntrali

zed

contr

oller

Witho

ut cen

tralize

dcon

troller

Bef

ore

turn

ing

the

pow

er O

N<I

nitia

l set

tings

>Tu

rn O

N w

hen

the

cent

raliz

ed c

ontro

ller

is c

onne

cted

to th

e ou

tdoo

r uni

t.

SW2-1

must

be tu

rned O

N if a

centr

al con

troller

is c

onne

cted t

o the

syste

m. An

exam

ple of

this

would

be a T

C-24,

EW-50

A, AG

150, A

E50 o

r AE

200.

If SW2

-1 is n

ot tur

ned o

n, wh

ile usi

ng

a cen

tral co

ntrolle

r, in ra

re circ

umsta

nces

proble

ms m

ay be

encou

ntered

such

as ind

oor

units

not re

spond

ing to

grou

p com

mand

s. Th

erefor

e, tur

ning S

W2-1

ON is

recom

mend

ed

if a ce

ntral c

ontro

ller is

used.

2Co

nnec

tion

Info

rmat

ion

Clea

r Swi

tch

Cle

arD

o no

t cle

arW

hen r

eloca

ting u

nits o

r con

necti

ng ad

dition

al un

its.

—

3A

bnor

mal

dat

a cl

ear s

witc

h in

put

Clea

r ab

norm

al da

taN

orm

alOF

F to O

N an

y tim

e afte

r the

powe

r is tu

rned o

n.To

del

ete

an e

rror

his

tory

.

4P

ump

dow

nR

un

adju

stm

ent

mod

eN

orm

alD

urin

g co

mpr

esso

rru

nnin

g

To fa

cilit

ate

outd

oor u

nit t

he p

umpi

ng

dow

n op

erat

ion.

Freq

uenc

y =

Fixe

d to

65

Hz

Indo

or-e

lect

roni

c ex

pans

ion

valve

= F

ully

open

Out

door

fan

step

= F

ixed

to 1

0

Pleas

e refe

r to a

secti

on re

ferrin

g to

the pu

mping

down

on ou

tdoor

units

Ins

tallat

ion M

anua

ls.It m

ight n

ot be

poss

ible t

o coll

ect a

ll the

ref

rigera

nt if t

he am

ount

is ex

cess

ive.

SW

2-5,

6/

SW

4/S

W8

Mod

elS

witc

h

1–6

MO

DE

L S

ELE

CTI

ON

1:O

N 0

:OFF

Bef

ore

the

pow

eris

turn

ed O

N.

<Ini

tial s

ettin

gs>

Set

for e

ach

capa

city

.—

—

SW

3 Tr

ial

oper

atio

n

1O

N/O

FF fr

om o

utdo

or u

nit

ON

OFF

Any t

ime a

fter t

hepo

wer is

turn

ed O

N.

<Ini

tial s

ettin

gs>

——

2M

ode

setti

ngH

eatin

gC

oolin

g—

—

SW

5Fu

nctio

nsw

itch

1—

——

—

<Ini

tial s

ettin

gs>

——

2C

hang

e th

e in

door

uni

t's L

EV

op

enin

g at

sta

rt-up

Ena

ble

Nor

mal

Can

be

set w

hen

off o

r dur

ing

oper

atio

n

To se

t the L

EV op

ening

at st

art-u

p high

er th

an

usua

l. (+

150 p

ulses

) To i

mpro

ve th

e ope

ratio

n wi

th the

LEV

almos

t clog

ged.

The

refri

gera

nt fl

ow n

oise

at

star

t-up

beco

me

loud

er.

3—

——

——

—

4A

uxili

ary

heat

erE

nabl

eD

isab

leB

efor

e th

e po

wer

is tu

rned

ON

.Tu

rn ON

when

an au

xiliary

heate

r is co

nnect

ed. (I

t tra

nsmits

a con

nectio

n perm

ission

signa

l of th

e auxi

liary

heate

r to th

e con

necte

d CITY

MUL

TI ind

oor u

nit.)

Turn

ON

only

when

the a

uxilia

ry he

ater is

conn

ected

and o

pera

ted.

5C

hang

e th

e in

door

uni

t's L

EV

op

enin

g at

def

rost

Ena

ble

Nor

mal

Can

be

set w

hen

OFF

or d

urin

g op

erat

ion

To se

t the L

EV op

ening

high

er th

an us

ual

durin

g defr

ostin

g ope

ratio

n.(O

nly Q

j [ 10

is va

lid, +

300 p

ulses

)To

avoid

the d

ischa

rge t

empe

ratur

e inc

reas

e an

d pro

vide e

ffi cien

t defr

ostin

g ope

ratio

n.

The

refri

gera

nt fl

ow n

oise

du

ring

the

defro

stin

g op

erat

ion

beco

mes

loud

er.

6S

witc

hing

the

targ

et s

ub c

ool

(Hea

ting

mod

e)E

nabl

eN

orm

alTo

decre

ase t

he ta

rget

sub c

ool v

alue.

To re

duce

the d

ischa

rge t

empe

ratur

e de

creas

e due

to re

friger

ant li

quid

accu

mulat

ion in

the u

nits.

A re

frige

rant

fl ow

noi

se m

ight

be

gen

erat

ed if

the

sub

cool

va

lue

is to

o sm

all.


1

ON

OFF

23

45

67

8

SW

U2

(tens

dig

it)

01 2 3 4

56789

SW

U1

(one

s di

git)

01 2 3 4

56789

1

ON

OFF

23

45

6

SW

U2

(tens

dig

it)

01 2 3 4

56789

SW

U1

(one

s di

git)

01 2 3 4

56789

1

ON

OFF

23

4

MO

DE

L

PUMY

-P60

NKMU

1

SW

4S

W8

ON OFF

12

34

56

ON OFF

12

1

ON

OFF

2

1

ON

OFF

23

45

67

8

Continue to the next pageOCH613

86

Sw

itch

Step

Func

tion

Ope

ratio

n in

Eac

h S

witc

h S

ettin

gR

emar

ksP

urpo

seA

dditi

onal

Info

rmat

ion

ONOF

FW

hen t

o Set

SW

5Fu

nctio

nsw

itch

7Du

ring t

he ou

tdoor

unit i

s in H

EAT

opera

tion,

addit

ionall

y inc

rease

abou

t 50

to 70

pulse

s of th

e LEV

open

ing on

the

indoo

r unit

whic

h is i

n FAN

, STO

P, CO

OL

or the

rmo-O

FF.*1

Activ

e Ina

ctive

Can b

e set

when

OF

F or

durin

g op

erati

on

To ad

dition

ally i

ncrea

se ab

out 5

0 to 7

0 puls

es of

the L

EV

open

ing fo

r unit

s othe

r tha

n in H

EAT

opera

tion.

To av

oid

a ref

rigera

nt sh

ortag

e (le

ss ca

pacit

y) du

e to

refrig

erant

liquid

accu

mulat

ion in

the u

nits w

hich i

s not

in op

eratio

n.

A re

frige

rant

fl ow

noi

se m

ight

be

gene

rate

d in

uni

ts o

ther

than

the

one

in o

pera

tion.

8Du

ring t

he ou

tdoor

unit i

s in o

pera

tion,

fully

close

s the

elec

tronic

expa

nsion

va

lve on

the i

ndoo

r unit

whic

h is i

n FA

N, C

OOL,

STOP

, or t

herm

o-OF

F.*2

Enab

leNo

rmal

Befor

e tur

ning t

he

powe

r ON.

To re

duce

the

room

temp

eratu

re in

creas

e by

settin

g the

LEV

ope

ning

lower

for t

he u

nits

in the

rmo-

OFF

oper

ation

.

The r

efrige

rant

is mo

re lik

ely to

colle

ct in

the un

its w

ith

therm

o-OF

F op

erati

on, a

nd ca

using

the u

nits r

efrige

rant

shor

tage.

(Res

ults i

n les

s cap

acity

and i

ncre

ase o

f dis

char

ge te

mper

ature

.)

SW

6Fu

nctio

nsw

itch

1—

——

—<I

nitia

l set

tings

>—

—2

——

——

——

3—

——

——

—

4C

hang

e of

def

rost

ing

cont

rol

Enab

le(Fo

r high

hu

midit

y)No

rmal

Can

be

set

whe

n O

FF

or d

urin

g op

erat

ion

To sh

orten

the d

efros

ting p

rohib

ition t

ime i

n high

hu

midit

y (or

heav

y sno

w) re

gion,

in or

der t

o red

uce

malfu

nctio

ns ca

used

by fr

ost .

The p

erform

ance

of th

e HEA

T ope

ration

is so

mewh

at red

uced

sinc

e the

defro

sting

opera

tion i

s freq

uentl

y pe

rform

ed.

5Ig

nore

refri

gera

nt fi

lling

ab

norm

ality

Enab

leNo

rmal

To ig

nore

the e

rror d

etecti

on of

exce

ssive

char

ge of

re

friger

ant. T

he un

it can

be ex

cess

ively

char

ged w

ith

refrig

eran

t dep

endin

g on t

he op

erati

ng co

nditio

n.

Make

sure

that

the un

it is n

ot ex

cess

ively

char

ged

with

refrig

eran

t befo

re st

artin

g ope

ratio

n whe

n se

rvicin

g or in

stallin

g the

units

.

6S

witc

hing

the

targ

et d

isch

arge

pres

sure

(Pdm

)En

able

Norm

alTo

raise

the p

erfor

manc

e by s

etting

the P

dm hi

gher

du

ring H

EAT

oper

ation

.Po

wer c

onsu

mptio

n is r

aised

due t

o a hi

gher

fre

quen

cy. (

The p

erform

ance

wou

ld no

t be r

aise a

t the

maxim

um op

eratin

g freq

uenc

y.)

7Sw

itchin

g (1)

the t

arge

t eva

pora

tion

tempe

ratur

e (ET

m)En

able

Norm

alTo

raise

/redu

ce th

e per

forma

nce b

y cha

nging

the

targe

t ETm

durin

g COO

L ope

ratio

n.Sw

itch to

raise

the p

erform

ance:

raise

s the p

erform

ance

Switch

to red

uce the

perfor

mance

: preve

nts de

w cond

ensatio

n

Switc

hing i

t to ra

ise th

e per

forma

nce,

it rais

es th

e pow

er

cons

umpti

on, a

nd pr

oduc

es m

ore d

ew co

nden

satio

n.Sw

itchin

g it to

redu

ce th

e perf

orman

ce, it

mak

es th

e pe

rform

ance

insu

ffi cien

t.8

Switc

hing (

2) th

e tar

get e

vapo

ratio

ntem

pera

ture (

ETm)

Enab

leNo

rmal

SW

7Fu

nctio

nsw

itch

1Ig

nore

cur

rent

sen

sor

abno

rmal

ityEn

able

Norm

alA

fter t

urni

ng

the

pow

er O

N.

<Ini

tial s

ettin

gs>

To pe

rform

a tes

t run

for e

lectric

al pa

rts al

one w

ithou

t ru

nning

the c

ompr

esso

r. Ma

ke su

re to

conn

ect th

e con

necto

rs to

the co

mpre

ssor

aft

er ch

eckin

g the

elec

trical

parts

.Be c

arefu

l not

to ge

t ele

ctrica

l sho

ck w

hile w

orkin

g on e

lectric

al pa

rts.

2S

ettin

g to

ene

rgiz

e th

e fre

eze

stat

hea

ter (

optio

nal p

art)

Dur

ing

heat

ing

oper

atio

n on

ly*3

Includ

e whe

n the

heati

ng

oper

ation

is

OFF. *

4

Can

be

set w

hen

OFF

or d

urin

g op

erat

ion

It red

uces

snow

on th

e bas

e, ev

en it

blows

insid

e the

un

it, by

settin

g the

base

heate

r ON

while

the H

EAT

oper

ation

is st

oppe

d.Po

wer c

onsu

mptio

n rais

es w

hile t

he op

erati

on is

sto

pped

.

3H

igh

heat

ing

perfo

rman

ce m

ode

Enab

leNo

rmal

Anyti

meTo

raise

the p

erfor

manc

e of H

EAT

oper

ation

if it i

s ins

uffi ci

ent.

The p

erform

ance

may

not b

e rais

ed de

pend

ing on

the c

apac

ity

of ind

oor u

nits i

n ope

ration

, or o

utside

air te

mpera

ture.

4—

——

——

—

5S

imul

tane

ous

cool

ing

and

heat

ing

with

ext

erna

l hea

ter

Enab

leDi

sable

Anyti

meTh

e sim

ulta

neou

s op

erat

ion

of c

oolin

g an

d he

atin

g wi

ll be

poss

ible

by

inst

allin

g an

ext

erna

l he

ater

to th

e CI

TY M

ULTI

indo

or u

nit.

For t

he in

stal

latio

n of

ext

erna

l hea

ter a

nd

the

indo

or u

nit s

ettin

g, re

fer t

o th

e in

door

un

it se

rvic

e m

anua

l.

6M

anua

l def

rost

Manu

al de

frost

Norm

alDu

ring c

ompre

ssor

runnin

g in H

EAT

mode

.

Turn

ON

when

it is

nece

ssar

y to p

erfor

m the

defro

sting

op

erati

on fo

rcedly

. (Effe

ctive

only

at sta

rt-up

, or 1

0 mi

nutes

after

the l

ast d

efros

ting o

pera

tion)

It per

forms

the d

efros

ting o

pera

tion f

orce

dly.

(HEA

T op

erati

on is

stop

ped t

empo

rarily

.)

SW

9Fu

nctio

nS

witc

h

1Au

to c

hang

e ov

er fr

om re

mot

e co

ntro

ller (

IC w

ith th

e mini

mum

addre

ss)

Enab

leDi

sable

Befor

e tur

ning t

he

powe

r ON

<Ini

tial s

ettin

gs>

Enab

les th

e ind

oor u

nit w

ith th

e mini

mum

addr

ess

to se

lect A

UTO

mode

, and

switc

hes t

he op

erati

on

mode

of th

e othe

r indo

or un

its to

the s

ame m

ode.

Can

not b

e se

t whe

n th

e ce

ntra

lized

con

trol

is O

N.

2Sw

itchi

ng th

e Si

lent

/ Dem

and

mod

eDe

mand

co

ntrol

Silen

t mo

deCa

n be s

et wh

en

OFF

or du

ring

oper

ation

—Ab

out th

e Sile

nt mo

de/D

eman

d con

trol s

etting

, refer

to

"8-8.

OUTD

OOR

UNIT

INPU

T/OUT

PUT C

ONNE

CTOR

".3

——

——

——

4—

——

——

—

*1

SW

5-7

Ope

ns th

e in

door

- ele

ctro

nic e

xpan

sion

valve

as

a co

unte

rmea

sure

aga

inst

the

indo

or u

nit i

n FA

N, C

OO

L, S

TOP,

or t

herm

o-O

FF o

pera

tion

with

refri

gera

nt-s

horta

ge s

tatu

s du

e to

an

accu

mul

atio

n of

liqui

d re

frige

rant

in th

e in

door

uni

t.

*2 S

W5-

8 C

ount

erm

easu

re a

gain

st ro

om te

mpe

ratu

re ri

se fo

r ind

oor u

nit i

n FA

N, C

OO

L, a

nd th

erm

o-O

FF (h

eatin

g) m

ode.

*3

Dur

ing

heat

ing

oper

atio

n an

d th

e am

bien

t tem

pera

ture

is 4:

or b

elow

, the

free

ze p

reve

ntio

n he

ater

is e

nerg

ized

.

*4 D

urin

g he

atin

g m

ode

is O

FF (i

nclu

de th

erm

o-O

FF in

coo

ling

mod

e), a

nd th

e am

bien

t tem

pera

ture

is 4:

or b

elow

, the

free

ze p

reve

ntio

n he

ater

is e

nerg

ized

.

SW

6-6

OFF

ON

Targe

t Pdm

(kg/c

m²)

29.5

31.5

SW

6-7

OFF

ON

OFF

ON

SW

6-8

OFF

OFF

ON

ON

Targ

et E

Tm (:

)9

116

14

1

ON

OFF

23

45

67

8

<Ini

tial s

ettin

gs>

1

ON

OFF

23

45

67

8

1

ON

OFF

23

45

6

1

ON

OFF

23

4

OCH613

87

CN51

X

543

A C

D

5E

1

1

3

B

G

Y

L1: Error display lampL2: Compressor operation lampX, Y: Relay (Coil standard of 0.9W or less for 12 V DC)

F

A C

D

E

B

GF

CN3NX

Y

SW1

SW2

123

X, Y: Relay (1 mA DC)

SW1SW2

ONHeating

Validity of SW1

OFFCooling

Invalidity of SW1

1

3

A C

D

E

B

GF

CN3DX

Y

SW1

SW2

123

The silent mode and the demand control are selected by switching the DIP switch 9-2 on outdoor controller board.It is possible to set it to the following power consumption (compared with ratings) by setting SW1, 2.

Silent mode Silent mode operationOutdoor controller board DIP SW9-2 SW1 SW2 Function

Demand controlOFFON

ONOFFON

—OFFOFF

ONOFF

ONON

100% 75%50%0%

(Normal)

(Stop)

A Distant control boardB Relay circuitC External output adapter (PAC-SA88HA-E)D Outdoor unit control board

A Remote control panelB Relay circuitC External input adapter (PAC-SC36NA-E)D Outdoor unit control board

E Relay power supplyF Procure locallyG Max. 10 m

A Remote control panelB Relay circuitC External input adapter (PAC-SC36NA-E)D Outdoor unit control board

E Relay power supplyF Procure locallyG Max. 10 m

E Lamp power supplyF Procure locallyG Max. 10m

~

~

YX

Y

X

~

Y

X

L1

L2

8-6. OUTDOOR UNIT INPUT/OUTPUT CONNECTOR State (CN51)

Auto change over (CN3N)

Silent Mode/Demand Control (CN3D)

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12345

MGray

Orange

Red

YellowBlack

M 12345

MRed

Blue

Orange

YellowWhite

Parts name Check points

Disconnect the connector then measure the resistance with a tester. (At the ambient temperature 10 to 30:)

Thermistor (TH3)<Outdoor liquid pipe>Thermistor (TH4)<Compressor> Thermistor (TH6)<Suction pipe>Thermistor (TH7)<Ambient>

Normal160 to 410 k"

4.3 to 9.6 k"

TH4TH2TH3TH6TH7

Abnormal

Open or short

Measure the resistance between the terminals with a tester. (At the ambient temperature 20:)

Solenoid valve coil<4-way valve> (21S4)

Motor for compressor(MC)

Measure the resistance between the terminals with a tester.(At the ambient temperature 20:)

Normal1197 ± 10 "

AbnormalOpen or short

Solenoid valve coil<Bypass valve> (SV1)

Linear expansion Valve(LEV A)

Linear expansion Valve(LEV B)

Measure the resistance between the terminals with a tester. (Winding temperature 20:)

W

V

U

Normal1580 ± 110 "

AbnormalOpen or short

Normal

0.370 ± 0.019 "

Abnormal

Open or short

Normal

Gray - Black Gray - Red Gray - Yellow Gray - Orange

Abnormal

46 ± 3 "Open or short

Normal

Red - White Red - Orange Red - Yellow Red - Blue

Abnormal

46 ± 4 "Open or short

Thermistor (TH2)<Hic pipe>

Red

BlueBrownOrangeWhite

Fan motor (MF1, MF2)

M

1234567

1.1 ± 0.05 M" 40 ± 4 k" 220 ± 22 k" Open

Normal

Red - Blue Brown - Blue Orange - Blue White - Blue

Abnormal

Measure the resistance between the conector pins with a tester.(At the ambient temperature 20:)

Open or short(Short, for White - Blue)

8-7. HOW TO CHECK THE PARTSPUMY-P60NKMU1(-BS)

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Notes1. High voltage is applied to the connecter (CNF1, 2) for the fan motor. Pay attention to the service.2. Do not pull out the connector (CNF1, 2) for the motor with the power supply on. (It causes trouble of the outdoor multi controller circuit board and fan motor.)Self checkSymptom : The outdoor fan can not turn around.

1

2

Check method of DC fan motor (fan motor / outdoor multi controller circuit board)

Power supply check(Remove the connector (CNF1, 2))Measure the voltage in the outdoor multi controller circuit board.TEST POINT 1 : VDC (between 1 (+) and 4 (-) of the fan connector): VDC 290–330 V DC(When PAM stops), 350 V DC (When PAM is operating)TEST POINT 2 : VCC (between 5 (+) and 4 (-) of the fan connector): VCC 15 V DC

No

NG

NG

Wiring contact checkContact of fan motor connector (CNF1, 2)

Fuse checkCheck the fuse (F500) on outdoorcontroller board.

Recover wiring.

Replace outdoor multi controller circuit board.


Replace outdoor multi controller circuit board.


Is the voltage normal?

Is there contact failure? Yes

Yes

No

Did the fuse blow?

No

Yes

Check the operation of fan. END

Yes OK

Check the operation. END

OK

Replace outdoor multi controller circuitboard (MULTI.B.) and the defectivefan motor .

Disconnect the FAN motor connector and measure the resistance of connector pins.Refer to “8-7. HOW TO CHECK THE PARTS”.

Inverterdriver

Ground

power supply (inverter drive)

power supply (gate drive)

rotation signal control voltage

7654--1

3-1

CNF1

15 V DC0–6.5 V DC0–15 V DC pulse

Motor

TESTS POINT VDC

TESTS POINT Vcc

CHECK POINT

+290–350 V DC

TESTS POINT VspPC511C515

TESTS POINT VFG

C82A

TESTS POINT VspTESTS POINT VFG

TESTS POINT Vcc

CHECK POINT

Inverterdriver

Ground

power supply (inverter drive)

power supply (gate drive)

rotation signal control voltage

7654--1

0–6.5 V DC0–15 V DC pulse

Motor

TESTS POINT VDC

TESTS POINT VspPC512C516

15 V DC TESTS POINT VocC82A

TESTS POINT VFG

TESTS POINT Vsp

TESTS POINT VFG

TESTS POINT Vcc

CHECK POINT

3-1

Multi controller circuit board

Power board

CNDCC510 F500 CNDC

CNF2

FAN MOTOR (MF1)

FAN MOTOR (MF2)

· The inverter control P.C. board is built in the fan motor of this outdoor unit.· When F500 that is on multi controller board is blown, change the fan motor and multi controller board at the same time (F500 is

impossisble to change).· For outdoor unit, there are 2 fan motors (up and down; MF1/MF2), it is possible to connect to either CNF1 or CNF2 on the

board.· It is abnormal when the abnormality is detected from either both fan motors or only one side.

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Check method of multi controller circuit board

Normal

LED1 LED2

Fuse checkCheck the fuse on multi controller circuit board

Did the fuse (F500) blow?

Did the fuse (F1 and F2) blow?

7seg LED is lit?(SW1: all off)

290 to 350 V DC?

Check wiring. Replace multi controller circuit board.

Check the breaker and main incoming power. Check power board. Check wiring.

Check the voltage from the power circuit board to CNDC (PNK) connector.

No

No

Yes(lit)

No (No lit)

Yes

No

Multi controller circuit board check

CNDC (PNK)

Power circuit board

3

1

CNDC(PNK)

CNAC2(RED)

NoiseFilterCircuit

Conv.Circuit


290–350 V DC

208/230 V AC±10%

208/230 V AC

TB1

±10%

CNAC (RED)F1F2

F500

1

3

LI NI

L1 L2

Check the SV1, SV2, SS and 21S4 and wiring.

Yes (blow)

Yes (blow)

Replace multi controller circuit board and the defective fan motor. See DC fan check.

Disconnect the FAN motor connector and measure the resistance of connector pins.Refer to “8-7. HOW TO CHECK THE PARTS”.

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Check method of power circuit board

Is the voltage of main incoming power208/230 V AC ±10%? Check the breaker and power supply.

Is the voltage of CNAC (RED) on multi controller circuit board

208/230 V AC ±10%?

Check wiring. Replace power circuit board.

Is the voltage of CNDC(PNK) on multiboard 290–350 V DC?

Check wiring. Check power circuit board. Retry after the temperature of the PTC1,2 drops to 257°F[125°C] or less

Note: To check the voltage of the parts on this board with a tester is difficult due to its location. Test points are limited.

Yes

Yes

Yes

Yes

No

No

No

No

Is the voltage between M1 and M2 onTB3 (M-NET transmission) 24–30 V DC?

Check wiring. Check M-NET power circuit board.

No

Turn off the incoming power supplyand check the resistance of PTC1,2 on

the Power circuit board.

PTC1,2 = open ?

Yes (open)

Replace Noise filter board and check52C-relay,wiring,power circuit board .

Check wiring. Check model setting switch SW4 on the multi controller board. Replace power board.

No(normal)

Power circuit board check

Normal

Yes

Is the voltage of the compressor(U-V, U-W and V-W) balanced?

1

3

CNAC(RED)

1

Multi controllercircuit board

M-NET powercircuit board

52C(relay)

PTCs

208/230 V


CN2 (RED)

CN52 (RED)

13V

GND

16V16V

GND(16V)GND(18V)

18V

SignalsSignals

7654321

1

3

52C relaydrive signal

Power supply for Inverter gate drivePower supply for PAM gate drive

L1

L2

TB1 208/230 V AC10%

3

5CN1

(WHT)

COMP

U-V 10–180 V ACV-W 10–180 V ACW-U 10–180 V AC

208/230 V

CNDC(PNK)

290–350 V DC

GND

1

3

Power supply formulti controller circuit board

Power supply

52C relay

Bus bar voltage(DC)

COMP (Hz)

PAM OFF

OFFON

OFFON

0Hz

ex. 48 Hz

0V

290/325 V330–350 V

ON

208/230 V

min Hz

290/325 V

OFF

TIME CHART

power on starts stop

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Check method of M-NET power circuit board

Normal

24–30 V DC?

Correct the short circuit point on the M-NET transmission line.

24–30 V DC?

Is the incoming main voltage208/230 V AC ±10%?

Check wiring. Replace M-NET power circuit board.

Check breaker and incoming power supply. Check power circuit board. Check wiring.

Check the voltage between M1 and M2 on thetransmission terminal block TB3.

Disconnect the branch box - outdoor transmission wiringfrom the terminal block TB3 , and check the voltage

between M1 and M2 on TB3 again.

*To check the voltage of the parts on this board with a tester is difficult due to its location. Test points are limited.

No

Yes(24–30 V DC ) No

Yes(208–230 V AC )

NoYes(24–30 V DC )

M-NET power circuit board check

Power circuit board

1

3

CNAC1(WHT)


M1 M2

CNS1(RED)

2 1 CN102(WHT)

TB3

4 3 2 1208/230 V AC±10%

NI

LI

208/230 V AC±10%

CN1

CN224–30 V DC

24–30 V DC (Non-polar)

To branch box

M-NET power circuit board

L2

L1

TB1

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8-8. HOW TO CHECK THE COMPONENTS<Thermistor feature chart>Low temperature thermistors

• Thermistor <Hic pipe> (TH2)• Thermistor <Outdoor liquid pipe> (TH3)• Thermistor <Suction pipe> (TH6)• Thermistor <Ambient> (TH7)

Thermistor R0 = 15 k" ± 3 %B constant = 3480 ± 2 %

Rt =15exp{3480( 273+t – 273 )}1 1

Thermistor R120 = 7.465 k" ± 2 %B constant = 4057 ± 2 %

Rt =7.465exp{4057( 273+t – 393)}1 1

High temperature thermistor

• Thermistor <Compressor> (TH4)

0

10

20

30

40

50

Res

ista

nce

(k"

)

20 10 0 10 20 30 40 504 14 32 50 68 86 104122

Temperature (:)Temperature (ºF)

500

400

300

200

100

Res

ista

nce

(k"

)

25 50 75 100 12077 122 167 212 248

Temperature (ºF)Temperature (:)

32°F [0:] 15 k"50°F [10:] 9.6 k"68°F [20:] 6.3 k"77°F [25:] 5.2 k"

86°F [30:] 4.3 k"104°F [40:] 3.0 k"

68°F [20:] 250 k" 86°F [30:] 160 k"104°F [40:] 104 k"122°F [50:] 70 k"140°F [60:] 48 k"

158°F [70:] 34 k" 176°F [80:] 24 k" 194°F [90:] 17.5 k"212°F [100:] 13.0 k"230°F [110:] 9.8 k"

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Comparing the High Pressure Sensor Measurement and Gauge Pressure

By configuring the digital display setting switch (SW1) as shown in the figure below, the pressure as measured by the high pressure sensor appears on the LED1 on the control board.

(1) While the outdoor unit is stopped, compare the gauge pressure and the pressure displayed on self-diagnosis LED1, 2.1) When the gauge pressure is between 0 and 14 PSIG [0.098 MPaG], internal pressure is caused due to gas leak. 2) When the pressure displayed on self-diagnosis LED1, 2 is between 14 PSIG [0.098 MPaG], the connector may be defective or

be disconnected. Check the connector and go to (4). 3) When the pressure displayed on self-diagnosis LED1, 2 exceeds 725 PSIG [5.0 MPaG], go to (3).4) If other than 1), 2) or 3), compare the pressures while the sensor is running. Go to (2).(2) Compare the gauge pressure and the pressure displayed on self-diagnosis LED1,2 after 15 minutes have passed since the start of operation. (Compare them by PSIG [MPaG] unit.)1) When the difference between both pressures is within 36 PSIG [0.25 MPaG], both the high pressure sensor and the control board

are normal. 2) When the difference between both pressures exceeds 36 PSIG [0.25 MPaG], the high pressure sensor has a problem. (perfor-

mance deterioration) 3) When the pressure displayed on self-diagnosis LED1, 2 does not change, the high pressure sensor has a problem.(3) Remove the high pressure sensor from the control board to check the pressure on the self-diagnosis LED1, 2.1) When the pressure displayed on self-diagnosis LED1, 2 is between 0 and 14 PSIG [0.098 MPaG], the high pressure sensor has a

problem.2) When the pressure displayed on self-diagnosis LED1, 2 is approximately 725 PSIG [5.0 MPaG], the control board has a problem. (4) Remove the high pressure sensor from the control board, and short-circuit between the pin 2 and pin 3 connectors

(63HS) to check the pressure with self-diagnosis LED1, 2.1) When the pressure displayed on the self-diagnosis LED1, 2 exceeds 725 PSIG [5.0 MPaG], the high pressure sensor has a problem.2) If other than 1), the control board has a problem.

High Pressure Sensor Configuration (63HS)

The high pressure sensor consists of the circuit shown in the figure below. If 5 V DC is applied between the white and the black wires, voltage corresponding to the pressure between the blue and the black wires will be output, and the value of this voltage will be converted by the microcomputer. The output voltage is 0.078 V per 14 PSIG [0.098 MPaG].

The pressure sensor on the body side is designed to connect to the connector. The connector pin number on the body side is different from that on the control board side.

SW1ON

1 2 3 4 5 6 7 8

ON

1 2 3 4 5 6 7 8

The figure at left shows that the switches 1 through 4 are set to ON and 5 through 8 are set to OFF.

Body side Control board side

Vcc Pin 1 Pin 3

Vout Pin 2 Pin 2

GND Pin 3 Pin 1

<HIGH PRESSURE SENSOR>

Note:

3

2

1

WHT

BLU

BLKSE

NS

OR

5 V DC

GND63HS

Vout MICROPROCESSOR

OUTDOOR MULTI CONTROLLER CIRCUIT BOARD

3–1: 5 V (DC)2–1: Output Vout (DC)

Pressure: 0–725 PSIG [5.0 MPa]Vout: 0.5–4.5 V0.078 V/14 PSIG [0.098 MPa]

0.5

2.5 5

2.5

4.5

Vout (V)

PRESSURE (PSI)(MPa)

363 725

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Comparing the Low Pressure Sensor Measurement and Gauge PressureBy configuring the digital display setting switch (SW1) as shown in the figure below, the pressure as measured by the low pressure sensor appears on the LED1 on the control board.

(1) While the outdoor unit is stopped, compare the gauge pressure and the pressure displayed on self-diagnosis LED1, 2.1) When the gauge pressure is between 0 and 14 PSIG [0.098 MPaG], internal pressure is caused due to gas leak. 2) When the pressure displayed on self-diagnosis LED1, 2 is between 0 and 14 PSIG [0.098 MPaG], the connector may be defective or

be disconnected. Check the connector and go to (4). 3)

4) If other than 1), 2) or 3), compare the pressures while the sensor is running. Go to (2).(2) Compare the gauge pressure and the pressure displayed on self-diagnosis LED1, 2 after 15 minutes have passed since

the start of operation. (Com pare them by PSIG [MPaG] unit.)1) When the difference between both pressures is within 29 PSIG [ 0.2MPaG], both the low pressure sensor and the control board are normal.2) When the difference between both pressures exceeds 29 PSIG [ 0.2MPaG], the low pressure sensor has a problem. (performance dete-

rioration) 3) When the pressure displayed on the self-diagnosis LED1, 2 does not change, the low pressure sensor has a problem.(3) Remove the low pressure sensor from the control board to check the pressure with the self-diagnosis LED1, 2 display.1) When the pressure displayed on the self-diagnosis LED1,2 is between 0 and 14 PSIG [0.098 MPaG], the low pressure sensor has a

problem.2) When the pressure displayed on self-diagnosis LED1, 2 is approximately 247 PSIG [1.7 MPaG], the control board has a problem.

(4) Remove the low pressure sensor from the control board, and short-circuit between the pin 2 and pin 3 connectors (63LS) to check the pressure with the self-diagnosis LED1, 2.

1) When the pressure displayed on the self-diagnosis LED1, 2 exceeds 247 PSIG [1.7 MPaG], the low pressure sensor has a problem. 2) If other than 1), the control board has a problem.(5) Remove the high pressure sensor (63HS) from the control board, and insert it into the connector for the low pres-

sure sensor (63LS) to check the pressure with the self-diagnosis LED1, 2.1) When the pressure displayed on the self-diagnosis LED1, 2 exceeds 247 PSIG [1.7 MPaG], the control board has a problem. 2) If other than 1), go to (2).

Low Pressure Sensor Configuration (63LS)The low pressure sensor consists of the circuit shown in the figure below. If 5 V DC is applied between the red and the black wires, voltage corresponding to the pressure between the white and the black wires will be output, and the value of this voltagewill be converted by the microcomputer. The output voltage is 0.173 V per 14 PSIG [0.098 MPaG].

The pressure sensor on the body side is designed to connect to the connector. The connector pin number on the body side is different from that on the control board side.

SW1ON

1 2 3 4 5 6 7 8

ON

1 2 3 4 5 6 7 8

The figure at left shows that the switches 1 through 4 are set to ON and 5 through 8 are set to OFF.

Body side Control board side

Vcc Pin 1 Pin 3

Vout Pin 2 Pin 2

GND Pin 3 Pin 1

Note:

0.5

0.85 1.7

2.5

3.5

Vout (V)

PRESSURE (PSI)(MPa)

3

2

1

RED

WHT

BLKSE

NS

OR

5 V DC

GND63LS

Vout MICROPROCESSOR

3–1 : 5 V (DC)2–1 : Output Vout (DC)

OUTDOOR MULTI CONTROLLER CIRCUIT BOARD

Pressure: 0–247 PSIG [1.7 MPaG]Vout: 0.5–3.5 V0.173 V/14 PSIG [0.098 MPa]

<LOW PRESSURE SENSOR>

123 247

When the outdoor temperature is 86°F [30°C] or less, and the pressure displayed on self-diagnosis LED1, 2 exceeds 247 PSIG [1.7 MPaG], go to (3). When the outdoor temperature exceeds 86°F [30°C], and the pressure displayed on self-diagnosis LED1, 2 exceeds 247 PSIG [1.7 MPaG], go to (5).

OCH613

SW2Pump down

SW6Function selection



21S44-way valve

SV1Bypass valve

CNACPower supply for outdoor multi controller circuit board208/230 V AC

CNS1Indoor/outdoor unit connecting wire

CNS2Transmission wire of centralized control

CN40,CN41Centralized control power supply/For storing jumper connector selection

CN102Connect to the M-NET power circuit board

CN51External signaloutput

SW4Model selection

SW7Forced defrost

SW3Test run

CN2Connect to the outdoor power circuit board 1–5:Power circuit board → Transmitting signal to the outdoor multi controller circuit board (0–5 V DC)2–5: Zero cross signal (0–5 V DC)3–4: Not used 6–5: 16 V DC7–5: 16 V DC

CNDC310–340 V DC (Y)310–350 V DC (V)(1(+)–3(−))

VCC (TEST POINT2)(Voltage between pins of C82A) : 15 V DC(Same as CNF1,2 5(+)–4(−))

VSP (Voltage between pins of C515 and C516) : 0 V DC (when stopped)1–6.5 V DC (when operated)(Same as CNF1,2 6(+)–4(−))

CNF1, 2Connect to fan motors1–4 : 310–340 V DC (Y) : 310–350 V DC (V)5–4 : 15 V DC6–4 : 0–6.5 V DC7–4 : 15 V DC (when stopped) 0–15 V DC pulse (when operated)

VDC (TEST POINT1)(Voltage between pins of C510) : 310–340 V DC (Y) : 310–350 V DC (V)(Same as CNF1,2 1(+)–4(−))

VFG (TEST POINT4)(Voltage between pin3 and pin4 of PC511 or PC512) : (Correspond to CNF1,2 7(+)–4(−))

TH4 Thermistor<Compressor>

TH7/TH6 Thermistor<Ambient/Suction pipe>

63HSHigh pressure sensor

63HHigh pressure switch

TH3 Thermistor<Outdoor liquid pipe>

CN3DInput of demand control

CNLVAElectronic expansionValve

SW1Display selection(Self-diagnosis)SWU2, SWU1Address setting

SW8Model selection

CN3SInput of demand con-trol

63LSLow pressure sensor

CNLVBElectronic expansionValve

TH2 Thermistor<Hic pipe>

96

8-9. TEST POINT DIAGRAMOutdoor multi controller circuit boardPUMY-P60NKMU1(-BS)

<CAUTION> TEST POINT 1 is high voltage.

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97

Outdoor power circuit boardPUMY-P60NKMU1(-BS)

Brief Check of POWER MODULEUsually, they are in a state of being short-circuited if they are broken.Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken.1. Check of POWER MODULE 1 Check of DIODE circuit R - L1 , S - L1 , R - N1 , S - N1 2 Check of IGBT circuit L2 - N1 3 Check of INVERTER circuit P - U , P - V , P - W , N1 - U , N1 - V , N1 - WNote: The marks R , S , L1 , L2 , P , N1 , U , V and W

shown in the diagram are not actually printed on the board.

CNAC1208/230 V ACConnect to the M-NET power circuit board (CN1)CNAC2208/230 V ACConnect to the outdoor multi controller circuit board

NI, LIVoltage of 230 V AC is input (Connect to the terminal block (TB1))

EI, E4Connect to the electrical parts box

DCL1, DCL2Connect to DCL

U/V/WConnect to the compres-sor (MC) Voltage among phases: 10–180 V AC

CNDC310–350 V DC (1+, 3−)Connect to the outdoor multi controller circuit board (CNDC)

E2, E3Connect to the elec-trical parts box

CN52C52C driving signalConnect to the outdoor multi controller circuit board (CN52C)

CN2Connect to the outdoor multi controller circuit board (CN2)1–5:Transmitting signal to outdoor multi controller circuit board (0–5 V DC)2–5: Zero cross signal (0–5 V DC)3–4: 18 V DC6–5: 16 V DC7–5: 16 V DC

CN4Connect to the outdoor multicontroller circuit board (CN4)

Power module

S R

(CNAC)

W V U L2 P N1 L1

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98

M-NET power circuit boardPUMY-P60NKMU1(-BS)

CN2Connect to the outdoor multi controller circuit board (CN102) 1–2: 24–30 V DC3–4: 24–30 V DC

CN1• Connect to the outdoor

noise filter circuit board (CNAC1) (Y)

• Connect to the outdoorpower circuit board (CNAC1) (V)1–3 : 208/230 V AC

TB1Connect to the electrical parts box

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99

8-10. OUTDOOR UNIT FUNCTIONSSW:setting0....OFF1....ON

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the

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510

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norm

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delay

disp

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Hig

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delay

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delay

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800

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mai

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delay

star

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delay

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Delay

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code

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1401

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code

histo

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1511

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code

histo

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code

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2000

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(the o

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1202

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ver c

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12

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1211

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Ther

mis

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4320

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1400

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OCH613

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Not

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3456

781

23

45

67

826

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Capac

ity cod

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indoor

unit)

0–25

5

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2910

1110

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pacity

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1000

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3111

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Heat

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3200

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3310

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3401

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3511

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3600

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oper

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light

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3710

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CN

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CN

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nit:

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play

det

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4311

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tal c

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ode

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door

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ts in

ther

mo-

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4400

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of ind

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cted i

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s45

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DC

bus

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(V)

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te of

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even

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LEV o

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high c

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revent

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ay a

ctiv

e LE

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ontro

l

4711

1101

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ate

of c

ompr

esso

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quen

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ontro

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onde

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g te

mpe

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mit

cont

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Com

pres

sor

tem

pera

ture

co

ntro

l

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char

ge te

mp.

(h

eatin

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acku

p co

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d ab

norm

ality

cont

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heat

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Pd

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k up

co

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Free

ze

prev

entio

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ntro

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he

begi

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of S

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Dis

play

act

ive

com

pres

sor

frequ

ency

con

trol

4800

0011

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ate

of c

ompr

esso

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quen

cy c

ontro

l 2He

at sin

k ove

r hea

t pre

venti

on co

ntrol

Sec

onda

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trol

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rent

cont

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rec

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oltag

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Low

press

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venti

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z-up

inhi

bit

cont

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t the

be

gini

ng o

f SH

d

4910

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rote

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put

63LS

ab

norm

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HIC

abn

orm

ality

Froz

en

prot

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ay val

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conne

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abno

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elay

cau

sed

by

bloc

ked

valv

e in

co

olin

g m

ode

TH6

abno

rmal

ityP

ower

mod

ule

abno

rmal

ity

5001

0011

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secon

d curre

nt valu

e when

microp

rocess

or of PO

WER

BOAR

D abno

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is dete

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0–99

9.9[

Arm

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Dis

play

dat

a at

tim

e of

ab

norm

ality

5111

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tsink te

mpera

turewhe

n micro

proces

sor of

POWE

R BO

ARD

abnorm

ality is d

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d−9

9.9–

999.

9 (°

F)

Sta

te o

f com

pres

sor f

requ

ency

(Hz)

con

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char

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cont

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Hz

cont

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y pr

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mita

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pres

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disc

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mpe

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SV

con

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Hz

cont

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y by

pass

val

veA

bnor

mal

rise

of P

d co

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norm

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se o

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char

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Hea

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eat p

reve

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lH

eat s

ink

over

hea

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vent

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cont

rol

Sec

onda

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econ

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dec

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Max

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to re

ceip

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tage

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OCH613

101

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SW

1 se

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play

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n th

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ispl

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ata)

Not

es12

3456

781

23

45

67

8

5200

1011

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utdo

or L

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lse

0–20

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ulse

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ay o

f ope

ning

pul

se o

f ou

tdoo

r LE

V

5310

1011

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tdoor

LEV-A

open

ing

pulse

abno

rmali

ty de

lay

5401

1011

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tdoor

LEV-A

open

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pulse

abno

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ty

5511

1011

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or L

EV-

B

open

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puls

e

5600

0111

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tdoor

LEV-B

open

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pulse

abno

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ty de

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5710

0111

00Ou

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LEV-B

open

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pulse

abno

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ty58

0101

1100

63LS

(Low

pre

ssur

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9.9–

999.

9 (P

SIG

)

Dis

play

of d

ata

from

sen

sor

and

ther

mis

tor

5911

0111

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LS ab

norm

ality

delay

−99.

9–99

9.9

(PS

IG)

6000

1111

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LS

abn

orm

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61

1011

1100

TH2

(Hic

pip

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9.9–

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9 (°

F)62

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TH2(H

IC) ab

norm

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9.9–

999.

9 (°

F)63

1111

1100

TH2 (

HIC) a

bnorm

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6400

0000

10Op

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eque

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0–25

5 (H

z)Dis

play o

f actu

al op

eratin

g freq

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1000

0010

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0–25

5 (H

z)D

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f tar

get f

requ

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6601

0000

10O

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or fa

n co

ntro

l st

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umbe

r0–

15D

ispl

ay o

f num

ber o

f out

door

fa

n co

ntro

l ste

ps (t

arge

t)69

1010

0010

IC1 L

EV O

penin

g puls

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0–2

000

(pul

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Dis

play

of o

peni

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ulse

of

indo

or L

EV

7001

1000

10IC

2 LEV

Ope

ning p

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7111

1000

10IC

3 LEV

Ope

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7200

0100

10IC

4 LEV

Ope

ning p

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7310

0100

10IC

5 LEV

Ope

ning p

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7401

0100

10Hig

h pres

sure

sens

or (Pd

) −9

9.9–

999.

9 (P

SIG

)

Dis

play

det

ecte

d da

ta o

f ou

tdoo

r uni

t sen

sors

and

th

erm

isto

rs

7511

0100

10TH

4(Com

presso

r)(Td)

data

−99.

9–99

9.9

(°F)

7600

1100

10TH

6(Suct

ion pip

e) (ET

) data

7710

1100

10TH

7(Am

bient

) dat

a78

0111

0010

TH3(O

utdoor

liquid

pipe) d

ata80

0000

1010

TH8(H

eat s

ink) d

ata81

1000

1010

IC1

TH23

(Gas

)

−99.

9–99

9.9

(°F)

(W

hen

indo

or u

nit i

s no

t con

nect

ed, i

t is

disp

laye

d as

0.)

Dis

play

det

ecte

d da

ta o

f in

door

uni

t the

rmis

tor

8201

0010

10IC

2 TH

23 (G

as)

8311

0010

10IC

3 TH

23 (G

as)

8400

1010

10IC

4 TH

23 (G

as)

8510

1010

10IC

5 TH

23 (G

as)

OCH613

102

No.

SW

1 se

tting

Dis

play

mod

eD

ispl

ay o

n th

e LE

D1,

2 (d

ispl

ay d

ata)

Not

es12

3456

781

23

45

67

886

0110

1010

IC1

TH22

(Liq

uid)

−99.

9–99

9.9

(°F)

(Whe

n th

e in

door

uni

t is

not c

onne

cted

, it i

s di

spla

yed

as 0

.)D

ispl

ay d

etec

ted

data

of

indo

or u

nit t

herm

isto

rs

8711

1010

10IC

2 TH

22 (L

iqui

d)88

0001

1010

IC3

TH22

(Liq

uid)

8910

0110

10IC

4 TH

22 (L

iqui

d)90

0101

1010

IC5

TH22

(Liq

uid)

9111

0110

10IC

1 TH

21 (I

ntak

e)92

0011

1010

IC2

TH21

(Int

ake)

9310

1110

10IC

3 TH

21 (I

ntak

e)94

0111

1010

IC4

TH21

(Int

ake)

9511

1110

10IC

5 TH

21 (I

ntak

e)96

0000

0110

Outdo

or SC

(coo

ling)

−99.

9–99

9.9

(:)

Disp

lay of

outdo

or su

bcoo

l (SC)

data

9710

0001

10Ta

rget

subc

ool s

tep

−2–4

Disp

lay o

f tar

get s

ubco

ol ste

p da

ta98

0100

0110

IC1

SC

/SH

−99.

9–99

9.9

(:)

durin

g he

atin

g: s

ubco

ol (S

C)/d

urin

g co

olin

g: s

uper

heat

(SH

) (Fi

xed

to "0

" dur

ing

cool

ing

oper

atio

n)D

ispl

ay o

f ind

oor S

C/S

H

data

9911

0001

10IC

2 S

C/S

H

100

0010

0110

IC3

SC

/SH

10

110

1001

10IC

4 S

C/S

H

102

0110

0110

IC5

SC

/SH

10

311

1001

10Dis

charge

supe

rheat

(SHd)

−99.

9–99

9.9

(:)

Displa

y of ou

tdoor d

ischar

ge sup

erheat

(SHd

) data

105

1001

0110

Target

Pd dis

play (h

eating

) kgf/F

P

dm (0

.0–3

0.0)

(kgf

/cm

²)

Disp

lay o

f all c

ontro

l targ

et d

ata

106

0101

0110

Targe

t ET d

isplay

(coo

ling)

ETm

(−2.

0–23

.0) (:

)10

711

0101

10Tar

get o

utdoo

r SC (

cooling

)S

Cm

(0.0

–20.

0) (:

)10

800

1101

10Tar

get in

door

SC/SH

(IC1)

SC

m/S

Hm

(0.0

–20.

0) (:

)10

910

1101

10Tar

get in

door

SC/SH

(IC2)

110

0111

0110

Targe

t indo

or SC

/SH (IC

3)11

111

1101

10Tar

get in

door

SC/SH

(IC4)

112

0000

1110

Targe

t indo

or SC

/SH (IC

5)11

310

0011

10Ind

oor un

itcheck

status

(IC9-1

2)N

o.9

unit

chec

kN

o.10

uni

t che

ckN

o.11

uni

t che

ckN

o.12

uni

t che

ckLi

ght o

n at

tim

e of

abn

orm

ality

114

0100

1110

Indo

or u

nit o

pera

tion

mod

e (IC

9-12

)N

o.9

unit

mod

eN

o.10

uni

t mod

eN

o.11

uni

t mod

eN

o.12

uni

t mod

eC

OO

L/D

RY:

ligh

t on

H

EAT

:

light

blin

king

FAN

/STO

P:

light

off

115

1100

1110

Indo

or u

nit o

pera

tion

disp

lay

(IC9-

12)

No.

9 un

it op

erat

ion

No.

10 u

nit

oper

atio

nN

o.11

uni

t op

erat

ion

No.

12 u

nit

oper

atio

nTh

erm

o-O

N: l

ight

on

Th

erm

o-O

FF: l

ight

off

116

0010

1110

IC9 o

perat

ion m

ode

STO

PFa

nC

oolin

g Th

erm

o-O

NC

oolin

gth

erm

o-O

FFH

eatin

g th

erm

o-O

NH

eatin

gth

erm

o-O

FFD

ispl

ay o

f ind

oor u

nit

oper

atio

n m

ode

117

1010

1110

IC10

opera

tion m

ode

118

0110

1110

IC11

opera

tion m

ode

119

1110

1110

IC12

opera

tion m

ode

120

0001

1110

Targe

t indo

or SC

/SH (IC

9)

SC

m/S

Hm

(0.0

–20.

0) (:

)D

ispl

ay o

f all

cont

rol t

arge

t da

ta12

110

0111

10Tar

get in

door

SC/SH

(IC10

)12

201

0111

10Tar

get in

door

SC/SH

(IC11)

123

1101

1110

Targe

t indo

or SC

/SH (IC

12)

124

0011

1110

IC9 L

EV op

ening

pulse

ab

norm

ality

delay

0–20

00 (p

ulse

)D

ispl

ay o

f ope

ning

pul

se

of in

door

LE

V a

t tim

e of

ab

norm

ality

del

ay

125

1011

1110

IC10

LEV o

penin

g puls

e ab

norm

ality

delay

126

0111

1110

IC11

LEV o

penin

g puls

e ab

norm

ality

delay

127

1111

1110

IC12

LEV o

penin

g puls

e ab

norm

ality

delay

OCH613

103

No.

SW

1 se

tting

Dis

play

mod

eD

ispl

ay o

n th

e LE

D1,

2 (d

ispl

ay d

ata)

Not

es12

3456

781

23

45

67

8

128

0000

0001

Actua

l freq

uenc

y of

abno

rmali

ty de

lay0–

255

(Hz)

Dis

play

of a

ctua

l frq

uenc

y at

tim

e of

abn

orm

ality

del

ay

129

1011

0001

Fan s

tep nu

mber

at tim

e of

abno

rmali

ty de

lay0–

15D

ispl

ay o

f fan

ste

p nu

mbe

r at

tim

e of

abn

orm

ality

del

ay

131

1100

0001

IC1 L

EV op

ening

pulse

ab

norm

ality

delay

0–20

00 (p

ulse

)D

elay

of o

peni

ng p

ulse

of

indo

or L

EV

at t

ime

of

abno

rmal

ity d

elay

132

0010

0001

IC2 L

EV op

ening

pulse

ab

norm

ality

delay

133

1010

0001

IC3 L

EV op

ening

pulse

ab

norm

ality

delay

134

0110

0001

IC4 L

EV op

ening

pulse

ab

norm

ality

delay

135

1110

0001

IC5 L

EV op

ening

pulse

ab

norm

ality

delay

136

0001

0001

High p

ressu

re se

nsor

data

at tim

e of a

bnorm

ality

delay

kgf/c

m2−9

9.9–

999.

9 (P

SIG

)

Dis

play

of d

ata

from

Hig

h pr

essu

re s

enso

r,al

l the

rmis

tors

, and

SC

/SH

at

time

ofab

norm

ality

del

ay

137

1001

0001

TH4

(Com

pres

sor)

sens

or d

ata

at tim

e of

ab

norm

ality

delay

°C

−99.

9–99

9.9

(°F)

138

0101

0001

TH6

(Suc

tion

pipe

) se

nsor

dat

a at

tim

e of

ab

norm

ality

del

ay °C

139

1101

0001

TH3 (

Outdo

or liq

uid pi

pe)

sens

or da

ta at

time o

f ab

norm

ality

delay

°C

140

0011

0001

TH8 (

Heat

sink)

sensor

data

at tim

e of a

bnorm

ality d

elay °

C

141

1011

0001

OC SC

(coo

ling)

at tim

e of

abno

rmali

ty de

lay °C

−99.

9–99

9.9(:

)D

urin

g he

atin

g: s

ubco

ol (S

C)

Dur

ing

cool

ing;

sup

erhe

at (S

H) (

Fixe

d to

"0" d

urin

g co

olin

g op

erat

ion)

142

0111

0001

IC1 S

C/SH

at tim

e of

abno

rmali

ty de

lay °C

143

1111

0001

IC2 S

C/SH

at tim

e of

abno

rmali

ty de

lay °C

144

0000

1001

IC3 S

C/SH

at tim

e of

abno

rmali

ty de

lay °C

145

1000

1001

IC4 S

C/SH

at tim

e of

abno

rmali

ty de

lay °C

146

0100

1001

IC5 S

C/SH

at tim

e of

abno

rmali

ty de

lay °C

147

1100

1001

IC9 S

C/SH

at tim

e of

abno

rmali

ty de

lay °C

148

0010

0001

IC10

SC/SH

at tim

e of

abno

rmali

ty de

lay °C

149

1010

1001

IC11

SC/SH

at tim

e of

abno

rmali

ty de

lay °C

150

0110

1001

IC12

SC/SH

at tim

e of

abno

rmali

ty de

lay °C

OCH613

104

No.

SW

1 se

tting

Dis

play

mod

eD

ispl

ay o

n th

e LE

D1,

2 (d

ispl

ay d

ata)

Not

es12

3456

781

23

45

67

8

151

1110

1001

IC9 L

EV op

ening

pulse

at

time o

f abn

ormali

ty

0–20

00 (p

ulse

)D

ispl

ay o

f ope

ning

pul

se

of in

door

LE

V a

t tim

e of

ab

norm

ality

152

0001

1001

IC10

LEV o

penin

g puls

e at

time o

f abn

ormali

ty

153

1001

1001

IC11

LEV o

penin

g puls

e at

time o

f abn

ormali

ty

154

0101

1001

IC12

LEV o

penin

g puls

e at

time o

f abn

ormali

ty

155

1101

1001

IC9 S

C/SH

at tim

e of

abno

rmali

ty

−99.

9–99

9.9(:

)D

urin

g he

atin

g: s

ubco

ol (S

C)

Dur

ing

cool

ing;

sup

erhe

at (S

H) (

Fixe

d to

"0" d

urin

g co

olin

g op

erat

ion)

Dis

play

of i

ndoo

r SC

/SH

da

ta a

t tim

e of

abn

orm

ality

156

0011

1001

IC10

SC/SH

at tim

e of

abno

rmali

ty

157

1011

1001

IC11

SC/SH

at tim

e of

abno

rmali

ty

158

0111

1001

IC12

SC/SH

at tim

e of

abno

rmali

ty15

911

1110

01IC

9 C

apac

ity c

ode

0–25

5

Dis

play

of i

ndoo

r uni

t ca

paci

ty c

ode

The

No.

1 un

it w

ill s

tart

from

th

e M

-NE

T ad

dres

s w

ith th

e lo

wes

t num

ber

160

0000

0101

IC10

Cap

acity

code

161

1000

0101

IC11

Cap

acity

code

162

0100

0101

IC12

Cap

acity

code

163

1100

0101

IC9

SC

/SH

−99.

9–99

9.9(:

)D

urin

g he

atin

g: s

ubco

ol (S

C)

Dur

ing

cool

ing;

sup

erhe

at (S

H) (

Fixe

d to

"0" d

urin

g co

olin

g op

erat

ion)

Dis

play

of i

ndoo

r SC

/SH

da

ta

164

0010

0101

IC10

SC

/SH

165

1010

0101

IC11

SC

/SH

166

0110

0101

IC12

SC

/SH

170

0101

0101

RO

M v

ersi

on

mon

itor

0.00

–99.

99 (v

er)

Dis

play

of v

ersi

on d

ata

of

RO

M17

111

0101

01R

OM

type

Dis

play

of R

OM

type

172

0011

0101

Che

ck s

um m

ode

0000

–FFF

FD

ispl

ay o

f che

ck s

um c

ode

of R

OM

173

1011

0101

IC9

TH23

(Gas

)

−99.

9–99

9.9

(°F)

D

ispl

ay d

etec

ted

data

of

indo

or u

nit t

herm

isto

rs

174

0111

0101

IC10

TH2

3 (G

as)

175

1111

0101

IC11

TH2

3 (G

as)

176

0000

1101

IC12

TH2

3 (G

as)

177

1000

1101

IC9

TH22

(Liq

uid)

178

0100

1101

IC10

TH2

2 (L

iquid)

179

1100

1101

IC11

TH2

2 (L

iquid)

180

0010

1101

IC12

TH2

2 (L

iquid)

181

1010

1101

Back

up h

eatin

gde

term

inatio

n va

lue "a

"

182

0110

1101

Back

up h

eatin

gde

term

inatio

n va

lue "b

"

183

1110

1101

Back

up h

eatin

gde

term

inatio

n va

lue "c

"

184

0001

1101

Back

up h

eatin

gde

term

inatio

n va

lue "d

"18

510

0111

01IC

9 TH

21 (I

ntak

e)18

601

0111

01IC

10 T

H21

(Inta

ke)

187

1101

1101

IC11

TH2

1 (In

take

)18

800

1111

01IC

12 T

H21

(Inta

ke)

OCH613

105

No.

SW

1 se

tting

Dis

play

mod

eD

ispl

ay o

n th

e LE

D1,

2 (d

ispl

ay d

ata)

Not

es12

3456

781

23

45

67

8

189

1011

1101

His

tory

of v

olta

ge

erro

r (U

9/42

20)

--

PAM

err

orC

onve

rter F

ault

Pow

er

sync

hron

izat

ion

sign

al e

rror

L1 o

pen

phas

e er

ror

Unde

r volt

age

erro

rO

ver v

olta

ge e

rror

192

0000

0011

Act

ual f

requ

ency

of

abn

orm

ality

0–25

5 (H

z)D

ispl

ay o

f act

ual f

requ

ency

at

tim

e of

abn

orm

ality

193

1000

0011

Fan

step

num

ber

at ti

me

of

abno

rmal

ity0–

15D

ispl

ay o

f fan

ste

p nu

mbe

r at

tim

e of

abn

orm

ality

195

1100

0011

IC1 L

EV op

ening

pulse

at

time o

f abn

orma

lity

0–20

00 (p

ulse

)D

ispl

ay o

f ope

ning

pul

se

of in

door

LE

V a

t tim

e of

ab

norm

ality

196

0010

0011

IC2 L

EV op

ening

pulse

at

time o

f abn

orma

lity

197

1010

0011

IC3 L

EV op

ening

pulse

at

time o

f abn

orma

lity

198

0110

0011

IC4 L

EV op

ening

pulse

at

time o

f abn

orma

lity

199

1110

0011

IC5 L

EV op

ening

pulse

at

time o

f abn

orma

lity

200

0001

0011

High

pres

sure

sens

or

data

at tim

e of

abno

rmali

ty−9

9.9–

999.

9 (P

SIG

)

Dis

play

of d

ata

from

H

igh

pres

sure

sen

sor,

all

ther

mis

tors

, and

SC

/SH

at

time

of a

bnor

mal

ity.

201

1001

0011

TH4 (

Comp

ress

or)

sens

or da

ta at

time o

f ab

norm

ality

−99.

9–99

9.9

(°F)

202

0101

0011

TH6 (

Sucti

on pi

pe)

sens

or da

ta at

time o

f ab

norm

ality

203

1101

0011

TH3 (

Outdo

or liq

uid

pipe)

sens

or da

ta at

time o

f abn

orma

lity

204

0011

0011

TH8 (

Heat

sink)

sens

or da

ta at

time o

f ab

norm

ality

205

1011

0011

OC SC

(coolin

g) at tim

e of

abnorm

ality

−99.

9–99

9.9(:

) D

urin

g he

atin

g: s

ubco

ol (S

C)

Dur

ing

cool

ing;

sup

erhe

at (S

H) (

Fixe

d to

"0" d

urin

g co

olin

g op

erat

ion)

Dis

play

of i

ndoo

r SC

/SH

da

ta a

t tim

e of

abn

orm

ality

206

0111

0011

IC1 S

C/SH

at tim

e of

abno

rmali

ty

207

1111

0011

IC2 S

C/SH

at tim

e of

abno

rmali

ty

208

0000

1011

IC3 S

C/SH

at tim

e of

abno

rmali

ty

209

1000

1011

IC4 S

C/SH

at tim

e of

abno

rmali

ty

210

0100

1011

IC5 S

C/SH

at tim

e of

abno

rmali

ty21

111

0010

11IC

6 C

apac

ity c

ode

0–25

5

Dis

play

of i

ndoo

r uni

t ca

paci

ty c

ode

The

No.

1 un

it w

ill s

tart

from

th

e M

-NE

T ad

dres

s w

ith th

e lo

wes

t num

ber

212

0010

1011

IC7

Cap

acity

cod

e

213

1010

1011

IC8

Cap

acity

cod

e

214

0110

1011

IC6 o

perat

ion m

ode

STO

PFa

nC

oolin

g th

erm

o-O

NC

oolin

gth

erm

o-O

FFH

eatin

g th

erm

o-O

NH

eatin

gth

erm

o-O

FFD

ispl

ay o

f ind

oor u

nit

oper

atio

n m

ode

215

1110

1011

IC7 o

perat

ion m

ode

216

0001

1011

IC8 o

perat

ion m

ode

OCH613

106

No.

SW

1 se

tting

Dis

play

mod

eD

ispl

ay o

n th

e LE

D1,

2 (d

ispl

ay d

ata)

Not

es12

3456

781

23

45

67

821

710

0110

11IC

6 LEV

open

ing pu

lse0–

2000

(pul

se)

Dis

play

of o

peni

ng p

ulse

of

indo

or L

EV

218

0101

1001

IC7 L

EV op

ening

pulse

219

1101

1001

IC8 L

EV op

ening

pulse

220

0011

1011

IC6

TH23

(Gas

)

−99.

9–99

9.9

(°F)

Dis

play

det

ecte

d da

ta o

f in

door

uni

t the

rmis

tor

221

1011

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(Gas

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as)

223

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(liq

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IC7

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(liq

uid)

225

1000

0111

IC8

TH22

(liqu

id)

226

0100

0111

IC6

TH21

(int

ake)

227

1100

0111

IC7

TH21

(int

ake)

228

0010

0111

IC8

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(int

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0000

1111

IC8

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H at

time

of

abno

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1000

1111

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EV op

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pulse

at

time o

f abn

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lity 0–

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(pul

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Dis

play

of o

peni

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of

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11IC

7EV

open

ing pu

lse

at tim

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bnor

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243

1100

1111

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ening

pulse

at

time o

f abn

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lity

244

0010

1111

IC6 S

C/SH

at tim

e of

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rmali

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−99.

9–99

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ing

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da

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9 LEV

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10 LE

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lse25

310

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12 LE

V op

ening

pulse

OCH613

107

9 ELECTRICAL WIRING

9-1. OVERVIEW OF POWER WIRING

9-2. WIRING OF MAIN POWER SUPPLY AND EQUIPMENT CAPACITY9-2-1. Wiring diagram for main power supply

This chapter provides an introduction to electrical wiring for the CITY MULTI-S series, together with notes concerning power wiring, wiring for control (transmission wires and remote controller wires), and the frequency converter.

(1) Use a separate power supply for the outdoor unit and indoor unit.(2) Bear in mind ambient conditions (ambient temperature, direct sunlight, rain water,etc.) when proceeding with the wiring and connections.(3) The wire size is the minimum value for metal conduit wiring. The power cord size should be 1 rank thicker consideration of voltage drops.

Make sure the power-supply voltage does not drop more than 10 %.(4) Specific wiring requirements should adhere to the wiring regulations of the region.(5) Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord (design 60245 IEC57).

For example, use wiring such as YZW.(6) Install an earth longer than other cables.

Warning:· Be sure to use specified wires to connect so that no external force is imparted to terminal connections. If connections are not fixed firmly,

it may cause heating or fire.· Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct

current.

Caution:· Some installation site may require attachment of an earth leakage breaker. If no earth leakage breaker is installed, it may cause an electric

shock.· Do not use anything other than breaker and fuse with correct capacity. Using fuse and wire or copper wire with too large capacity may cause a

malfunction of unit or fire.Be sure to install N-Line. Without N-Line, it could cause damage to the unit.·

Schematic Drawing of Wiring

208/230 V AC 60 Hz L1/L2

GR

A

BA

CL/N

CL/N

CL/N

CL/N

D

A Switch (Breakers for Wiring and Current Leakage)B Outdoor UnitC M-NET Control Indoor unitD Pull Box

Note: The M-NET control indoor unit cannot receive power supplied from an outdoor unit, so provide it with power separately.

; ; ; ;

208/230 V AC 60 Hz

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9-2-2. Cross section area of Wire for Main Power and ON/OFF capacitiesPUMY-P60NKMU1(-BS)

Thickness of Wire for Main Power Supply and On/Off Capacities

ModelPower Supply

Minimum Wire Thickness (AWG [mm2]) Breaker for

Wiring*1Breaker for Current

LeakageMinimum cir-cuit ampacity

Maximum rating of over current protec-

tor deviceMain Cable*2 Ground

Outdoor Unit P60 208/230 VAC, 60 Hz AWG8 [8.4] AWG8 [8.4] 40 A 40 A 30 mA 0.1 sec. or less 36 A 42 A

Indoor Unit 208/230 VAC, 60 Hz Refer to installation manual of indoor unit.

*2. Use copper supply wires. Use the electric wires over the rating voltage 300 V..

Total operating current of the indoor unitMinimum wire thickness (AWG [mm2])

Ground-fault interruper *1Local switch (A) Breaker for wiring

(NFB)Main Cable Branch Ground Capacity FuseF0 = 15 A or less *2 14/2.1 14/2.1 2.1/14 15 A current sensitivity *3 15 15 15F0 = 20 A or less *2 12/3.3 12/3.3 12/3.3 20 A current sensitivity *3 20 20 20F0 = 30 A or less *2 10/5.5 10/5.5 10/5.3 30 A current sensitivity *3 30 30 30

Apply to IEC61000-3-3 about max. permissive system impedance.*1 The Ground-fault interrupter should support inverter circuit. The Ground-fault interrupter should combine using of local switch or wiring breaker.*2 Please take the larger of F1 or F2 as the value for F0.F1 = Total operating maximum current of the indoor units × 1.2F2 = {V1 × (Quantity of Type1)/C} + {V1 × (Quantity of Type2)/C} + {V1 × (Quantity of Type3)/C} + {V1 × (Quantity of Others)/C}

C : Multiple of tripping current at tripping time 0.01sPlease pick up “C” from the tripping characteristic of the breaker.

= 14.65

+ V3 × (Wire length [km])

G1 Current sensitivity30 or less 30 mA 0.1 sec or less

100 or less 100 mA 0.1 sec or less

Wire thickness (AWG/mm2) V314/2.1 4812/3.3 5610/5.3 66

1. Use a separate power supply for the outdoor unit and indoor unit.2. Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when proceeding with the wiring and connections.3. The wire size is the minimum value for metal conduit wiring. The power cord size should be 1 rank thicker consideration of voltage drops. Make sure the power-supply voltage does not drop more than 10%.4. 5. -

6000

600

60

10

1

0.1

0.011 2 3 4 6 8

C

10 20

Sample chartTr

ippi

ng T

ime

[s]

Rated Tripping current (x)

SAMPLE

*1. A breaker with at least 3.0 mm [1/8 inch] contact separation in each poles shall be provided. Use non-fuse breaker (NF) or earth leakage breaker (NV).

<Example of “F2” calculation>* Condition PEFY-NMSU × 4 + PEFY-NMAU × 1, C = 8 (refer to right sample chart)F2 = 19.8 × 4/8 + 38 × 1/8

16 A breaker (Tripping current = 8 × 16 A at 0.01 s)* 3 Current sensitivity is calculated using the following formula.G1 = V2 × (Quantity of Type1) + V2 × (Quantity of Type2) + V2 × (Quantity of Type3) + V2 × (Quantity of Others)

Indoor unit V1 V2

Type 1PKFY-P·NHMU, PKFY-P·NKMU, PEFY-P·NMSU, PLFY-P·NEMU, PLFY-EP·NEMU, PMFY-P·NBMU, PCFY-P·NKMU

19.8 2.4

Type 2 PEFY-P·NMAU, PVFY-P·NAMU 38.0 1.6Type 3 PKFY-P·NBMU, PLFY-P·NCMU 3.5 2.4

Others PFFY-P·NEMU, PFFY-P·NRMU, PDFY-P·NMU, PEFY-P·NMHU 0.0 0.0

OCH613

109

9-3. DESIGN FOR CONTROL WIRINGPlease note that the types and numbers of control wires needed by the CITY MULTI-S series depend on the remote controllers and whether they are linked with the system or not.

9-3-1. Selection number of control wires

9-4. WIRING TRANSMISSION CABLES

M-NET remote controller

UseRemote controller used in system control operations.• Group operation involving different refrigerant systems.• Linked operation with upper control system.

Remote controller → indoor unit

2-core wire (non-polar)

Tran

smis

sion

w

ires

Wires connecting → indoor units

Wires connecting → indoor units with outdoor unit

Wires connecting → outdoor units

9-4-1. Types of control cables1. Wiring transmission cables• Types of transmission cables: Shielding wire CVVS, CPEVS or MVVS• Cable diameter: More than AWG 16 [1.25 mm2]• Maximum wiring length: Within 656 ft [200 m]

2. M-NET Remote control cables

Kind of remote control cable Shielding wire (2-core) CVVS, CPEVS or MVVS

Cable diameter AWG 20 to AWG 16 [0.5 to 1.25 mm2]

Remarks When 10 m is exceeded, use a cable with the same specifi cations as transmission line wiring.

3. MA Remote control cables

Kind of remote control cable Sheathed 2-core cable (unshielded) CVV

Cable diameterAWG 22 to AWG 16 [0.3 to 1.25 mm2] (AWG 18 to AWG 16 [0.75 to 1.25 mm2 ])*

Remarks Within 656 ft [200 m]

* Connected with simple remote controller.

9-4-2. Wiring examples• Controller name, symbol and allowable number of controllers.

Name Symbol Allowable number of controllers

Outdoor unit controller OC ―

Indoor unit controller M-IC PUMY-P60 1 to 12 units per 1 OC

Remote controller RCM-NET RC Maximum of 10 controllers for 1 OC

MA-RC Maximum of 2 per group

Note that the number of connectable units may be limited by some conditions such as an indoor unit's capacity or each unit's equivalent power consumption. (Refer to DATA BOOK.)

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110

9-5. SYSTEM SWITCH SETTINGIn order to identify the destinations of signals to the outdoor units, indoor units, and remote controller of the MULTI-S series, each microprocessor must be assigned an identification number (address). The addresses of outdoor units, indoor units, and remote controller must be set using their settings switches. Please consult the installation manual that comes with each unit for detailed information on setting procedures.

9-6. EXAMPLE EXTERNAL WIRING DIAGRAM FOR A BASIC SYSTEM

Outdoorunit

Grounded

Group operation

Remote controller wire

Pull box

Indoor unit

Breaker for Wiring and Current Leakage

Breaker for Wiring and Current Leakage

1.25 mm2 × 2

Power supplysingle phase208/230 V AC 60 Hz

Power supplysingle phase 208/230 V AC 60 Hz

Example of system when using a M-NET controller

OCH613

111

(3) Method of obtaining system power factorUse the following formula and the total power and current obtained in parts 1 and 2 on the above tables to calculate the system power factor.

System power factor =(Total system power consumption)

(Total system current × voltage) o 100 %

9-7-2. Applying to an electric power company for power and total currentCalculations should be performed separately for heating and cooling employing the same methods; use the largest resulting value in your application to the electric power company.

9-7. METHOD FOR OBTAINING ELECTRICAL CHARACTERISTICS WHEN A CAPACITY AGREEMENT IS TO BE SIGNED WITH AN ELECTRIC POWER COMPANY

The electrical characteristics of connected indoor unit system for air conditioning systems, including the MULTI-S series, depend on the arrangement of the indoor and outdoor units.First read the data on the selected indoor and outdoor units and then use the following formulas to calculate the electrical characteristics before applying for a capacity agreement with the local electric power company.

9-7-1. Obtaining the electrical characteristics of a CITY MULTI-S series system (1) Procedure for obtaining total power consumption

*The power consumption of the outdoor unit will vary depending on the total capacity of the selected indoor units.

(2) Method of obtaining total current

The current through the outdoor unit will vary depending on the total capacity of the selected indoor units.

Page numbers in this technical manual Power consumptionTotal power consumption of each indoor unit See the technical manual of each indoor unit 1

Power consumption of outdoor unit* Standard capacity diagram— Refer to 4-3. 2

Total power consumption of system See the technical manual of each indoor unit 1+2 <kW>

Page numbers in this technical manual SubtotalTotal current through each indoor unit See the technical manual of each indoor unit 1

Current through outdoor unit* Standard capacity diagram— Refer to 4-3. 2

Total current through system See the technical manual of each indoor unit 1+2 <A>

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112

10 REFRIGERANT PIPING TASKS

10-1. REFRIGERANT PIPING SYSTEM

Line-Branch MethodConnection Examples(Connecting to 4 Indoor Units)

Liquid Line

Gas Line

Piping Diameter (inch[mm]) Model

Liquid Line (inch[mm]) Gas Line (inch[mm]) 3/4 [{19.05]3/8 [{9.52]

Liquid LineGas Line

Liquid LineGas Line

Liquid LineGas Line

Piping Diameter (inch[mm]) Model number

18 or lower

24 to 54

72

1/4 [{6.35]1/2 [{12.7]3/8 [{9.52]5/8 [{15.88]3/8 [{9.52]3/4 [{19.05]

Outdoor UnitFirst BranchIndoor unit

ABC

A+B+C+a+b+c+d [ 492 ft [150 meters]A+B+C+d [ 262 ft [80 meters]B+C+d [ 98 ft [30 meters]164 ft [50 meters] (If the outdoor unit is lower, 131 ft [40 meters])49 ft [15 meters]Use an optional branch piping kit (CMY-Y62-G-E).

Total Piping LengthFarthest Piping LengthFarthest Piping Length After First BranchHigh/Low Difference in Indoor/Outdoor SectionHigh/Low Difference in Indoor/Indoor Section

PermissibleLength

Permissible High/Low Difference

(L)(R)(H)(h)

Selecting the Refrigerant Branch Kit Select Each Section of Refrigerant Piping

Additional refrigerant charge

Select the size from the table to the right.

(1) Refrigerant Piping Diameter In Section From Outdoor Unit to First Branch (Outdoor Unit Piping Diameter)

(1) Section From Outdoor Unit to First Branch (A)(2) Sections From Branch to Indoor Unit (a,b,c,d)(3) Section From Branch to Branch (B,C)

(3) Refrigerant Piping Diameter In Section From Branch to Branch

(2) Refrigerant Piping Diameter In Section From Branch to Indoor Unit (Indoor Unit Piping Diameter)

EachSection ofPiping

Refrigerant for the extended piping is not included in the outdoor unit when the unit is shipped from the factory. Therefore, charge each refrigerant piping system with additional refrigerant at the installation site. In addition, in order to carry out service, enter the size and length of each liquid pipe and additional refrigerant charge amounts inthe spaces provided on the “Refrigerant amount” plate on the outdoor unit.Calculation of additional refrigerant charge

Calculate the additional charge using the liquid pipe size and length of the extended piping and total capacity of connected indoor units. Calculate the additional refrigerant charge using the procedure shown to the right, and charge with the additional refrigerant.For amounts less than 0.2 lb [0.1 kg], round up the

calculated additional refrigerant charge.(For example, if the calculated charge is 13.2 lb [6.01 kg], round up the charge to 13.4 lb [6.1 kg].)

3/8 [{9.52]

3/4 [{19.05]PUMY-P60

B

A

A

H

B C

L

R

d

a

h

b c

C

C

C C

Pipe sizeLiquid pipe

+


ø6.35 ø9.52[ft] × 0.29 [oz/ft](m) × 27.0 (g/m)

[ft] × 0.75 [oz/ft](m) × 70.0 (g/m)

<Additional Charge>Calculation of refrigerant charge

+

Total capacity of connected indoor units

Amount for the indoor units

– 27 kBTU/h 53 oz (1.5 kg)

28 – 54 kBTU/h 88 oz (2.5 kg)

55 – 62 kBUT/h 106 oz (3.0 kg)Included refrigerant amount when shipped from the factory

Included refrigerant amount

[40 × 27.0 + 45 × 70.0 + 2.5 = 6.8 kg (rounded up)]1000 1000

<Example>Outdoor model : P60Indoor 1 : P24 (24 kBTU/h)

A : ø9.52 66 ft [20 m]B : ø9.52 16 ft [5 m]C : ø9.52 16 ft [5 m] a : ø9.52 49 ft [15 m]

2 : P15 (15 kBTU/h) b : ø6.35 33 ft [10 m] 3 : P08 (8 kBTU/h) c : ø6.35 33 ft [10 m] 4 : P06 (6 kBTU/h) d : ø6.35 66 ft [20 m]

The total length of each liquid line is as follows:[3/8”] ø9.52 : A + B + C + a = 20 + 5 + 5 + 15 = 147 ft [45 m][1/4”] ø6.35 : b + c + d = 10 + 10 + 20 = 132 ft [40 m]The total capacity of connected indoor unit is as follows:24 + 15 + 08 + 06 = 53<Calculation example>Additional refrigerant charge

At the conditions below:

11 LBS. 4 OZ. (5.1 kg)

132 ft × 0.29 oz + 147 ft × 0.75 oz + 88 oz = 237 oz

OCH613

113

Header-Branch MethodConnection Examples(Connecting to 4 Indoor Units)

Outdoor UnitFirst BranchIndoor unit

ABC

A+a+b+c+d [ 492 ft [150 meters]A+d [ 262 ft [80 meters]d is 100 ft [30 meters]164 ft [50 meters] (If the outdoor unit is lower, 131 ft [40 meters])49 ft [15 meters]Please select branching kit, which is sold separately, from the table below.(The kit comprises sets for use with liquid pipes and for use with gas pipes.)


PermissibleLength


(L)(R)(H)(h)

Select Each Section of Refrigerant Piping

Selecting the Refrigerant Branch Kit


(1) Section From Outdoor Unit to First Branch (A)(2) Sections From Branch to Indoor Unit (a,b,c,d)


Branch header (4 branches)CMY-Y64-G-E

Branch header (8 branches)CMY-Y68-G-E

B

A

A

a b c

C

cCC

d

H

h

L

r

Additional refrigerant chargeRefrigerant for the extended piping is not included in the outdoor unit when the unit is shipped from the factory. Therefore, charge each refrigerant piping system with additional refrigerant at the installation site. In addition, in order to carry out service, enter the size and length of each liquid pipe and additional refrigerant charge amounts inthe spaces provided on the “Refrigerant amount” plate on the outdoor unit.Calculation of additional refrigerant charge

Calculate the additional charge using the liquid pipe size and length of the extended piping and total capacity of connected indoor units. Calculate the additional refrigerant charge using the procedure shown to the right, and charge with the additional refrigerant.For amounts less than 0.2 lb [0.1 kg], round up the calculated additional refrigerant charge.(For example, if the calculated charge is 13.2 lb [6.01 kg], round up the charge to 13.4 lb [6.1 kg].)

Liquid Line

Gas Line

Piping Diameter (inch[mm]) Model

Liquid Line (inch [mm]) Gas Line (inch [mm])3/4 [{19.05]3/8 [{9.52]

Liquid LineGas Line

Liquid LineGas Line

Liquid LineGas Line

Piping Diameter (inch[mm]) Model number

18 or lower

24 to 54

72

1/4 [{6.35]1/2 [{12.7]3/8 [{9.52]5/8 [{15.88]3/8 [{9.52]3/4 [{19.05]




3/8 [{9.52]

3/4 [{19.05]PUMY-P60


+


ø6.35 ø9.52[ft] × 0.29 [oz/ft](m) × 27.0 (g/m)

[ft] × 0.75 [oz/ft](m) × 70.0 (g/m)


+



– 27 kBTU/h 53 oz (1.5 kg)

28 – 54 kBTU/h 88 oz (2.5 kg)



[40 × 27.0 + 45 × 70.0 + 2.5 = 6.8 kg (rounded up)]1000 1000






11 LBS. 4 OZ. (5.1 kg)

132 ft × 0.29 oz + 147 ft × 0.75 oz + 88 oz = 237 oz

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Method of Combined Branching of Lines andHeadersConnection Examples(Connecting to 5 Indoor Units)

Outdoor unit

First branching (branchingjoint)

Branching joint

Indoor unit

Branching header

Blind caps

A

B

C

D

E

F

A+B+C+a+b+c+d+e is 492 ft [150 meters] A+B+b is 262 ft [80 meters] B+b is 100 ft [30 meters]164 ft [50 meters] (If the outdoor unit is lower, 131 ft [40 meters] or less)49 ft [15 meters]Please select branching kit, which is sold separately, from the table below.(The kit comprises sets for use with liquid pipes and for use with gas pipes.)


PermissibleLength


(L)(R)(H)(h)

Selecting the Refrigerant Branch Kit

Select Each Section of Refrigerant Piping


(1) Section From Outdoor Unit to First Branch (A)(2) Sections From Branch to Indoor Unit (a,b,c,d,e)(3) Section From Branch to Branch (B,C)


Branch JointCMY-Y62-G-E

Branch Header (4 branches)CMY-Y64-G-E

Branch Header (8 branches)CMY-Y68-G-E

Additional refrigerant chargeRefrigerant for the extended piping is not included in the outdoor unit when the unit is shipped from the factory. Therefore, charge each refrigerant piping system with additional refrigerant at the installation site. In addition, in order to carry out service, enter the size and length of each liquid pipe and additional refrigerant charge amounts inthe spaces provided on the “Refrigerant amount” plate on the outdoor unit.Calculation of additional refrigerant charge

Calculate the additional charge using the liquid pipe size and length of the extended piping and total capacity of connected indoor units. Calculate the additional refrigerant charge using the procedure shown to the right, and charge with the additional refrigerant.For amounts less than 0.2 lb [0.1 kg], round up the calculated additional refrigerant charge.(For example, if the calculated charge is 13.2 lb [6.01 kg], round up the charge to 13.4 lb [6.1 kg].)

B

A

E

F

C D

D D D

D

A

C

b

B 3H

h

4

L

R

5

1

2

c d e

a

Note: Pipe re-branching after the header branching is not possible.

Liquid Line

Gas Line

Piping Diameter (in [mm])ModelLiquid LineGas Line

Liquid LineGas Line

Liquid LineGas Line

Piping Diameter (in [mm])Model number

18 or lower

24 to 54

72

1/4 [{6.35]1/2 [{12.7]3/8 [{9.52]5/8 [{15.88]3/8 [{9.52]3/4 [{19.05]




3/8 [{9.52]

3/4 [{19.05]PUMY-P60

Liquid Line (inch [mm]) Gas Line (inch [mm])3/4 [{19.05]3/8 [{9.52]


+


ø6.35 ø9.52[ft] × 0.29 [oz/ft](m) × 27.0 (g/m)

[ft] × 0.75 [oz/ft](m) × 70.0 (g/m)


+



– 27 kBTU/h 53 oz (1.5 kg)

28 – 54 kBTU/h 88 oz (2.5 kg)



[40 × 27.0 + 45 × 70.0 + 2.5 = 6.8 kg (rounded up)]1000 1000






11 LBS. 4 OZ. (5.1 kg)

132 ft × 0.29 oz + 147 ft × 0.75 oz + 88 oz = 237 oz

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10-2. PRECAUTIONS AGAINST REFRIGERANT LEAKAGE10-2-1. IntroductionR410A refrigerant of this air conditioner is non-toxic and non-flammable but leaking of large amount from an indoor unit into the room where the unit is installed may be deleterious. To prevent possible injury, the rooms should be large enough to keep the R410A concentration specified by ISO 5149-1 as follows.

Note:When single refrigeration system consists of several inde-pendent refrigeration circuit, figure out the total refrigerant amount by each independent refrigerant circuit.

Follow (1) to (3) to confirm the R410A concentration and take appropriate treatment, if necessary.(1) Calculate total refrigerant amount by each refrig-

erant system. Total refrigerant amount is pre-charged refrigerant at ex-factory plus additional charged amount at field installation.

(2) Calculate room volumes (m3) and find the room with the smallest volumeThe part with represents the room with the smallest volume.

If the calculation results do not exceed the maximum con-centration, perform the same calculations for the larger sec-ond and third room, etc., until it has been determined that nowhere the maximum concentration will be exceeded.

Indoor unit

All refrigerant of this system will leak out to thisroom if there is leakage at this indoor unit.

Directionof refrigerant flow

Outdoor unit

Branching header

Maximum concentrationMaximum refrigerant concentration of R410A of a room is 0.44kg/K [0.027 lbs/ft³]accordance with ISO 5149-1. To facilitate calculation, the maximum concentration is expressed in units of kg/K [lbs/ft³] ( kg [lbs] of R410A per K [ft³])

(ISO 5149-1)

Maximum concentration of R410A: 0.027 lbs/ft³ [0.44 kg/K]

10-2-2. Confirming procedure of R410A concentration

(b) There are partitions, but there are openings that allow the effective mixing of air.

(c) If the smallest room has mechanical ventilation apparatus that is linked to a household gas detection and alarm device, the calculations should be performed for the second smallest room.

Total refrigerant in the refrigerating unit (lbs [kg]) [ Maximum concentration(lbs/ft³[kg/K])The smallest room in which an indoor unit has been installed (ft³[K]) Maximum concentration of R410A:0.027 lbs/ft³ [0.44kg/K]

(a) Situation in which there are no partitions

(3) Use the results of calculations (1) and (2) to calculate the refrigerant concentration:

Indoor unit

The smallestroom

The secondsmallest room

Outdoor unitVentilation apparatus

Indoor unit

Opening

Wall

Outdoor unit

(Situation in which thereare no door openings orin which there are open-ings above and blowdoors that occupy atleast 0.15% of the floorarea)

Indoor unit

Outdoor unit

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PUMY-P60NKMU1 PUMY-P60NKMU1-BS

11 DISASSEMBLY PROCEDURE


PHOTOSOPERATING PROCEDURE1. Removing the service panel and top panel

(1) Remove 3 service panel fixing screws (5 × 12) and slide the hook on the right downward to remove the service panel.

(2) Remove screws (3 for front, 3 for rear/5 × 12) of the top panel and remove it.

2. Removing the fan motor (MF1, MF2)(1) Remove the service panel. (See Photo 1)(2) Remove 4 fan grille fixing screws (5 × 12) to detach the

fan grille. (See Photo 1)(3) Remove a nut (for right handed screw of M6) to detach

the propeller. (See Photo 2.)(4) Disconnect the connectors, CNF1 and CNF2 on multi con-

troller board in electrical parts box.(5) Remove 4 fan motor fixing screws (5 × 20) to detach the

fan motor. (See Photo 3)

Photo 43. Removing the electrical parts box(1) Remove the service panel. (See Photo 1)(2) Remove the top panel. (See Photo 1)(3) Disconnect the connecting wire from terminal block.(See Photo 5)(4) Remove all the following connectors from outdoor multi controller circuit board;

<Diagram symbol in the connector housing>• Fan motor (CNF1, CNF2) • Thermistor <HIC pipe> (TH2) • Thermistor <Outdoor liquid pipe> (TH3) • Thermistor <Compressor> (TH4) • Thermistor <Suction pipe/Ambient, Outdoor> (TH7/6)• High pressure switch (63H) • High pressure sensor (63HS) • Low pressure sensor (63LS) • 4-way valve (21S4) • Bypass valve (SV1)• Electronic expansion valve (CNLVA/CNLVB)Pull out the disconnected wire from the electrical parts box.

(5) Remove the terminal cover and disconnect the compressor lead wire.Note: The terminal cover can be easily removed by using a

blade of flathead screwdriver.

Photo 1

Photo 2Propeller Front panel

Nut

Top panel fixing screws Top panel

Service panelfixing screws

Service panel

Fan grille

Grille fixing screws

Grille fixing screws

Slide

Note: Turn OFF the power supply before disassembly.

Photo 3

Figure 1

Terminal cover

Comp. terminalFront cover panel

Electrical parts box

Terminal cover

Terminal block(TB1)

Multi controller board (MULTI.B)

Terminal block(TB3) (TB7)

Valve bed fixing screws (4 × 10)

Compressor (MC)

Electrical parts box fixing screws

Cover panel fixing screws

Fan motor fixing screws

Fan motor

Fan motor fixing screws

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PHOTOS

117

OPERATING PROCEDUREPhoto 5(6) Remove 2 electrical parts box fixing screws (4 × 10)

then detach the electrical parts box by pulling it upward. The electrical parts box is fixed with 2 hooks on the left and 1 hook on the right.

From the previous page.

Photo 6

Photo 7

4. Removing the thermistor <Suction pipe> (TH6)(1) Remove the service panel. (See Photo 1)(2) Remove the top panel. (See Photo 1)(3) Disconnect the connectors, TH7/6 (red), on the multi con-

troller circuit board in the electrical parts box.(4) Loosen the wire clamps on the back of electrical parts box.(5) Pull out the thermistor <Suction pipe> (TH6) from the sen-

sor holder.

Note: When replacing thermistor <Suction pipe> (TH6), replace it together with thermistor <Ambient> (TH7) since they are combined together. Refer to procedure No.5 below to remove thermistor <Ambient> (TH7).

Electrical parts boxClamps

5. Removing the thermistor <Ambient> (TH7)(1) Remove the service panel. (See Photo 1)(2) Remove the top panel. (See Photo 1)(3) Disconnect the connector TH7/6 (red) on the multi controller

circuit board in the electrical parts box.(4) Loosen the wire clamps on top of the electrical parts box.

(See Photo 6.)(5) Pull out the thermistor <Ambient> (TH7) from the sensor

holder.

Note: When replacing thermistor <Ambient> (TH7), replace it together with thermistor <Suction pipe> (TH6), since they are combined together. Refer to procedure No.4 above to remove thermistor <Suction pipe> (TH6).

Photo 8Lead wire of thermistor <Ambient> (TH7)

Sensor holder


Multi controller board (MULTI.B)

Electrical parts box fixing screws

Thermistor<Low pressure saturated temp.>(TH6)

Hooks

OCH613

Photo 10

6. Removing the thermistors

Thermistor <HIC> (TH2) and thermistor <Compressor> (TH4) (1) Remove the service panel. (See Photo 1)(2) Disconnect the connectors, TH2 (black) and TH4 (white),

on the multi controller board in the electrical parts box.(3) Pull out the thermistor <HIC> (TH2) and thermistor

<Compressor> (TH4) from the sensor holder. (See Photo 9-1)

Thermistor <Outdoor pipe> (TH3)(1) Remove the service panel. (See Photo 1)(2) Disconnect the connector, TH3 (white), on the Multi control-

ler board in the electrical parts box.(3) Loosen the clamp for the lead wire on the bottom of the

electrical parts box.(4) Pull out the thermistor <Outdoor pipe> (TH3) from the sen-

sor holder. (See Photo 9-2)

118

4-way valve coil(21S4)

7. Removing the 4-way valve coil (21S4) (1) Remove the service panel. (See Photo 1)[Removing the 4-way valve coil](2) Remove 4-way valve coil fixing screw (M4 × 6).(3) Remove the 4-way valve coil by sliding the coil toward you.(4) Disconnect the connector 21S4 (green) on the multi con-

troller circuit board in the electrical parts box.

4-way valve

OPERATING PROCEDURE PHOTOSPhoto 9-1

4-way valve coilfixing screw

8. Removing the 4-way valve(1) Remove the service panel. (See Photo 1)(2) Remove the top panel. (See Photo 1)(3) Remove the electrical parts box (See photo 5)(4) Remove 3 valve bed fixing screws (4 × 10) and 4 ball valve

and stop valve fixing screws (5 × 16), then remove the valve bed. (See Photo 4 and 7)

(5) Remove 2 cover panel fixing screws (5 x 12), then slide the cover panel (front) upward to remove it.

(The cover panel (front) is fixed to the cover panel (rear) with a hook on the rear side. (See Photo 4)

(6) Remove the cover panel (rear) fixing screws (2 for right side and 2 for rear/ 5 x 12), then slide the cover panel (rear) upward to remove it. (See Photo 4)

(The cover panel (rear) is fixed to the side panel (R) with 2 screws.)(7) Remove 3 side panel (R) fixing screws (5 × 12) in the rear of the

unit, then slide the side panel (R) upward to remove it. (The side panel (R) is fixed to the side plate with hooks on the rear side.)

(8) Remove the 4-way valve coil. (See Photo 10)(9) Recover refrigerant.(10) Remove the welded part of 4-way valve.

Note 1: Recover refrigerant without spreading it in the air.Note 2: The welded part can be removed easily by remov-

ing the right side panel.Note 3: When installing the four-way valve, cover it with a wet

cloth to prevent it from heating 248ºF (120°C) or more, then braze the pipes so that the inside of pipes are

not oxidized.

Thermistor <Outdoor pipe> (TH3)

Photo 9-2


Thermistor <HIC> (TH2)

Ball valve and stop valve fixing screws

Thermistor <Compressor> (TH4)

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OPERATING PROCEDURE PHOTOS9. Removing bypass valve coil (SV1) and bypass valve

(1) Remove the service panel. (See Photo 1)(2) Remove the top panel. (See Photo 1)(3) Remove the cover panel (front). (Refer to procedure 8(5))(4) Remove the cover panel (rear) (Refer to procedure 8(6))(5) Remove the side panel (R). (Refer to procedure 8 (7))(6) Remove the bypass valve coil fixing screw (M4 × 6).(7) Remove the bypass valve coil by sliding the coil upward.(8) Disconnect the connector SV1 (gray) on the multi controller

circuit board in the electrical parts box.(9) Remove the electrical parts box. (See Photo 5)(10) Recover refrigerant.(11) Remove the welded part of bypass valve.

Photo 11

10. Removing the high pressure switch (63H) and high pres-sure sensor (63HS)

(1) Remove the service panel. (See Photo 1)(2) Remove the top panel. (See Photo 1)(3) Remove the cover panel (front). (Refer to procedure 8(5))(4) Remove the cover panel (rear) (Refer to procedure 8(6))(5) Remove the side panel (R). (Refer to procedure 8 (7))(6) Pull out the lead wire of high pressure switch and high pres-

sure sensor.(7) Remove the electrical parts box. (See Photo 5)(8) Recover refrigerant.(9) Remove the welded part of high pressure switch and high

pressure sensor.

11. Removing the low pressure sensor (63LS)(1) Remove the service panel. (See Photo 1)(2) Remove the top panel. (See Photo 1)(3) Remove the cover panel (front). (Refer to procedure 8(5))(4) Remove the cover panel (rear) (Refer to procedure 8(6))(5) Remove the side panel (R). (Refer to procedure 8 (7))(6) Disconnect the connector 63LS (blue) on the multi controller

circuit board in the electrical parts box. (7) Remove the electrical parts box. (See Photo 5)(8) Recover refrigerant.(9) Remove the welded part of low pressure sensor.

12. Removing electronic expansion valve (LEV-A, LEV-B)(1) Remove the service panel. (See Photo 1)(2) Remove the top panel. (See Photo 1)(3) Remove the cover panel (front). (Refer to procedure 8(5))(4) Remove the cover panel (rear) (Refer to procedure 8(6))(5) Remove the side panel (R). (Refer to procedure 8 (7))(6) Remove the electronic expansion valve coil. (See Photo 12)(7) Remove the electrical parts box. (See Photo 5)(8) Recover refrigerant.(9) Remove the welded part of electronic expansion valve.

Low pressure sensor (63LS)

Electronic expansion valve coil (LEV-A)

Electronic expansion valve

Electronic expansion valve coil (LEV-B) Electronic

expansion valve

Notes:1. Recover refrigerant without spreading it in the air.2. The welded part can be removed easily by removing

the right side panel.3. When installing the following parts, cover it with a

wet cloth to prevent it from heating as the tempera-ture below, then braze the pipes so that the inside of pipes are not oxidized;• Bypass valve (procedure 9), 248°F [120°C] or more• High pressure switch and high pressure sensor

(procedure 10), 212°F [100°C] or more• Low pressure sensor (procedure 11), 100°C or more• LEV (procedure 12), 248°F [120°C] or more

Refer to the notes below.



Photo 12

High pressure switch (63H)

High pressure sensor (63HS)

Bypass valve coil fixing screwBypass valve coil (SV1)

Bypass valve

Low pressure sensor (63LS)

4-way valve coil(21S4)

4-way valve


4-way valve coilfixing screw

Thermistor <Outdoor pipe> (TH3)

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120

OPERATING PROCEDURE

Reactor


Figure 2

Screwsfor reactor

Connectors ofreactor

13. Removing the reactor (DCL)(1) Remove the service panel. (See Photo 1)(2) Remove the top panel. (See Photo 1)(3) Remove the electrical parts box (See photo 5)(4) Remove 4 screws for reactor (4 x 10) to remove the reac-

tor. (See Figure 1)

Bottom plate of electrical parts box

Photo 13

Photo 14Figure 3

Separator fixing screws

14. Removing the compressor (MC)(1) Remove the service panel. (See Photo 1)(2) Remove the top panel. (See Photo 1)(3) Remove the electrical parts box. (See Photo 5)(4) Remove the valve bed. (Refer to procedure 8 (4))(5) Remove the cover panel (front). (Refer to procedure 8(5))(6) Remove the cover panel (rear) (Refer to procedure 8(6))(7) Remove the side panel (R). (Refer to procedure 8 (7))(8) Remove front panel fixing screws, 5 (5x12) and 2 (4 x 10)

and remove the front panel. (See Photo 4)(9) Remove 3 separator fixing screws (4 × 10) and remove the

separator. (See Figure 3) (10) Recover refrigerant.(11) Remove the 3 compressor fixing nuts using spanner or

adjustable wrench.(12) Remove the welded pipe of motor for compressor inlet and

outlet and then remove the compressor.

Note: Recover refrigerant without spreading it in the air.

Separator fixing screw

Valve bed

Front cover panel fixing screws

Valve bed fixing screw

Rear cover panel fixing screws

Valve bed fixing screws

Right side panel

Compressor(MC)

Separator fixing screw

Compressor fixing nut

SeparatorAccumulator

Accumulatorleg

Accumulator leg fixing screws

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121

Accumulator

OPERATING PROCEDURE PHOTOS15. Removing the accumulator

(1) Remove the service panel. (See Photo 1)(2) Remove the top panel. (See Photo 1)(3) Remove the electrical parts box. (See Photo 5)(4) Remove the valve bed. (See procedure 8 (4))(5) Remove the cover panel (front). (Refer to procedure 8(5))(6) Remove the cover panel (rear) (Refer to procedure 8(6))(7) Remove the side panel (R). (Refer to procedure 8 (7))(8) Recover refrigerant.(9) Remove 2 welded pipes of accumulator inlet and outlet.(10) Remove 2 accumulator leg fixing screws (4 × 10). (See

Photo 16)Note: Recover refrigerant without spreading it in the air.

Photo 16

Inlet

Outlet

Accumulator

Accumulator leg

Accumulator leg fixingscrews

Photo 15

OCH613

cCopyright 2016 MITSUBISHI ELECTRIC CORPORATIONDistributed in May 2016 No.OCH613Made in Japan

New publication, effective May 2016Specifications are subject to change without notice.

HEAD OFFICE : TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN

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