DLCERA · Specifications subject to change without notice. DLCERA SERVICE MANUAL Outdoor Unit...

Specifications subject to change without notice.

DLCERASERVICE MANUAL

Outdoor Unit Single Zone Ductless System − Sizes 09 to 24

TABLE OF CONTENTSPAGE

SAFETY CONSIDERATIONS 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .INTRODUCTION 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MODEL/SERIAL NUMBER NOMENCLATURES 2. . . . . . . . . . . . .SPECIFICATIONS 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DIMENSIONS 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CLEARANCES 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ELECTRICAL DATA 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .WIRING 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CONNECTION DIAGRAMS 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .WIRING DIAGRAM 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .REFRIGERATION CYCLE DIAGRAMS 14. . . . . . . . . . . . . . . . . . . .REFRIGERANT LINES 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SYSTEM EVACUATION AND CHARGING 16. . . . . . . . . . . . . . . . .ELECTRONIC FUNCTIONS 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . .TROUBLESHOOTING 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .OUTDOOR UNIT DIAGNOSTIC GUIDES 22. . . . . . . . . . . . . . . . . .PCB DIAGRAMS 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DIAGNOSIS AND SOLUTION 25. . . . . . . . . . . . . . . . . . . . . . . . . . .DISASSEMBLY INSTRUCTIONS 46. . . . . . . . . . . . . . . . . . . . . . . . .APPENDIX 69. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SAFETY CONSIDERATIONSInstalling, starting up, and servicing air−conditioning equipment can behazardous due to system pressures, electrical components, andequipment location (roofs, elevated structures, etc.).Only trained, qualified installers and service mechanics should install,start−up, and service this equipment.

Untrained personnel can perform basic maintenance functions such ascleaning coils. All other operations should be performed by trainedservice personnel.When working on the equipment, observe precautions in the literatureand on tags, stickers, and labels attached to the equipment.Follow all safety codes. Wear safety glasses and work gloves. Keepquenching cloth and fire extinguisher nearby when brazing. Use care inhandling, rigging, and setting bulky equipment.Read this manual thoroughly and follow all warnings or cautions includedin literature and attached to the unit. Consult local building codes andNational Electrical Code (NEC) for special requirements. Recognize safety

information. This is the safety−alert symbol ! ! . When you see this symbolon the unit and in instructions or manuals, be alert to the potential forpersonal injury. Understand these signal words: DANGER, WARNING,and CAUTION.

These words are used with the safety−alert symbol. DANGERidentifies the most serious hazards which will result in severe personalinjury or death. WARNING signifies hazards which could result inpersonal injury or death. CAUTION is used to identify unsafe practiceswhich may result in minor personal injury or product and propertydamage. NOTE is used to highlight suggestions which will result inenhanced installation, reliability, or operation.

! WARNINGELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personalinjury or death.

Before installing, modifying, or servicing system, mainelectrical disconnect switch must be in the OFFposition. There may be more than 1 disconnect switch.Lock out and tag switch with a suitable warning label.

EXPLOSION HAZARD

Failure to follow this warning couldresult in death, serious personal injury,and/or property damage.

Never use air or gases containingoxygen for leak testing or operatingrefrigerant compressors. Pressurizedmixtures of air or gases containingoxygen can lead to an explosion.

! WARNING

CAUTION!

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipmentdamage or improper operation.

Do not bury more than 36 in. (914 mm) of refrigerant pipein the ground. If any section of pipe is buried, there must bea 6 in. (152 mm) vertical rise to the valve connections onthe outdoor units. If more than the recommended length isburied, refrigerant may migrate to the cooler buried sectionduring extended periods of system shutdown. This causesrefrigerant slugging and could possibly damage thecompressor at start−up.

INTRODUCTIONThis Service Manual provides the necessary information to service, repair,and maintain the outdoor units. Section 2 of this manual has an appendixwith data required to perform troubleshooting. Use the Table of Contentsto locate a desired topic.

2 32808001101Specifications subject to change without notice.

MODEL/SERIAL NUMBER NOMENCLATURES

Table 1—Unit Sizes

Cooling Only

SYSTEM TONS BTUh VOLTAGE - PHASE OUTDOOR MODEL

1.00 12,000 115-1 DLCERAA12AAJ

1.00 12,000 208/230-1 DLCERAA12AAK

1.50 18,000 208/230-1 DLCERAA18AAK

2.00 24,000 208/230-1 DLCERAA24AAK

Heating Pump

1.00 12,000 115-1 DLCERAH12AAJ

0.75 9,000 208/230-1 DLCERAH09AAK

1.00 12,000 208/230-1 DLCERAH12AAK

1.50 18,000 208/230-1 DLCERAH18AAK

2.00 24,000 208/230-1 DLCERAH24AAK

AR 09

A = MAJOR SERIES

UNIT TYPER = OUTDOOR UNIT

MAXIMUM NUMBER OF FAN COIL UNITS THATCAN BE CONNECTED TO THE OUTDOOR UNIT

A = 1:1

OUTDOOR UNIT

DLC E KH

DLC = CONDENSING UNIT

E = MODEL

VOLTAGEJ =115-1-60K = 208/230-1-60

NOMINAL CAPACITY09 - 3/4 TON12 - 1 TON18 - 1.5 TONS 24 - 2 TONS

A A

SYSTEM TYPEA = COOLING ONLYH = HEAT PUMP

A = VARIATION

18 01

Year of Manufacture Week of Manufacture

10001

Sequential Serial Number

V

V = All Models

Use of the AHRI CertifiedTM Mark indicates amanufacturer’s participation in the program For verification of certification for individual products, go to www.ahridirectory.org.


SPECIFICATIONSTable 2—Specifications (Cooling Only)

COOLING ONLY

SystemSize 12K 12K 18K 24K

Outdoor Model DLCERAA12AAJ DLCERAA12AAK DLCERAA18AAK DLCERAA24AAK

Electrical

Voltage, Phase, Cycle V/Ph/Hz 115-1-60 208/230-1-60 208/230-1-60 208/230-1-60

MCA A. 13 7 11 16

MOCP - Fuse Rating A. 20 15 15 25

OperatingCooling Outdoor DBMin - Max

° F(° C) 0~122 (-17~50) 0~122 (-17~50) 0~122 (-17~50) 0~122 (-17~50)

Piping

Total Piping Length ft (m) 82 (25) 82 (25) 98 (30) 164 (50)

Piping Lift* ft (m) 33 (10) 33 (10) 66 (20) 66 (20)

Pipe Connection Size - Liquid In.(mm) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 3/8 (9.52)

Pipe ConnectionSize - Suction

In.(mm) 1/2 (12.7) 1/2 (12.7) 1/2 (12.7) 5/8 (16)

Refrigerant

Type R410A R410A R410A R410A

Charge lbs (kg) 1.30 (0.59) 1.30 (0.59) 2.09 (0.95) 2.64 (1.20)

Metering Device EEV EEV EEV EEV

Outdoor Coil

Face Area Sq. Ft. 4.15 4.15 4.78 4.78

No. Rows 1 1 2 2

Fins per inch 22 22 22 22

Circuits 2 2 4 6

Compressor

Type Rotary Inverter Rotary Inverter Rotary Inverter Rotary Inverter

Model ASN98D22UFZ ASN98D22UFZ ASM135D23UFZ ATF235D22UMT

Oil Type VG74 VG74 VG74 VG74

Oil Charge Fl. Oz. 13.0 13.0 13.0 23.6

Rated Current RLA 9.5 4.5 7.0 11.0

Outdoor

Unit Width In.(mm) 30.31(770) 30.31(770) 31.50(800) 33.27(845)

Unit Height In.(mm) 21.85(555) 21.85(555) 21.81(554) 27.64(702)

Unit Depth In.(mm) 11.81(300) 11.81(300) 13.11(333) 14.29(363)

Net Weight lbs (kg) 57.8(26.2) 53.8(24.4) 70.1(31.8) 88.6(40.2)

Airflow CFM 1,170 1,170 1,170 1,880

Sound Pressure dB(A) 52.0 54.0 57.0 59.5

* Condensing unit above or below the indoor unit


SPECIFICATIONS (CONT)Table 3—Specifications (Heat Pump)

HEAT PUMP

SystemSize 12 9 12 18 24

Outdoor Model DLCERAH12AAJ DLCERAH09AAK DLCERAH12AAK DLCERAH18AAK DLCERAH24AAK

Electrical

Voltage, Phase, Cycle V/Ph/Hz 115-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60

MCA A. 13 8 10 15 18

MOCP - Fuse Rating A. 20 15 15 20 25

OperatingRange

Cooling Outdoor DB Min- Max

° F(° C) 0~122 (-17~50) 0~122 (-17~50) 0~122 (-17~50) 0~122 (-17~50) 0~122 (-17~50)

Heating Outdoor DB Min- Max

° F(° C) 0~86 (-17~30) 0~86 (-17~30) 0~86 (-17~30) 0~86 (-17~30) 0~86 (-17~30)

Piping

Total Piping Length ft (m) 82 (25) 82 (25) 82 (25) 98 (30) 164 (50)

Piping Lift* ft (m) 33 (10) 33 (10) 33 (10) 66 (20) 66 (20)

Pipe ConnectionSize - Liquid

In.(mm) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 3/8 (9.52)

Pipe ConnectionSize - Suction

In.(mm) 1/2 (12.7) 3/8 (9.52) 1/2 (12.7) 1/2 (12.7) 5/8 (16)

Refrigerant

Type R410A R410A R410A R410A R410A

Charge lbs (kg) 2.11 (0.96) 1.76 (0.80) 2.11 (0.96) 2.82 (1.28) 3.97 (1.80)

Metering Device EEV EEV EEV EEV EEV

Outdoor Coil

Face Area Sq. Ft. 4.1 4.1 4.1 4.7 5.3

No. Rows 1.5 1 1.5 2 2

Fins per inch 18 18 18 18 18

Circuits 4 2 4 4 4

Compressor

Type Rotary Inverter Rotary Inverter Rotary Inverter Rotary Inverter Rotary Inverter

Model ASN98D22UFZ ASN98D22UFZ ASN98D22UFZ ASM135D23UFZ ATF235D22UMT

Oil Type VG74 VG74 VG74 VG74 VG74

Oil Charge Fl. Oz. 13.0 13.0 13.0 15.8 23.6

Rated Current RLA 9.5 5.5 6.8 10.5 12.0

Outdoor

Unit Width In.(mm) 30.31(770) 30.31(770) 30.31(770) 31.50(800) 33.27(845)

Unit Height In.(mm) 21.85(555) 21.85(555) 21.85(555) 21.81(554) 27.64(702)

Unit Depth In.(mm) 11.81(300) 11.81(300) 11.81(300) 13.11(333) 14.29(363)

Net Weight lbs (kg) 69.0(31.3) 63(28.6) 65.5(29.7) 79.6(36.1) 114.2(51.8)

Airflow CFM 1,170 1,170 1,170 1,170 1,765

Sound Pressure dB(A) 54.5 57.2 57.4 57.0 60.2

* Condensing unit above or below the indoor unit


DIMENSIONSTable 4—Dimensions

CoolingOnly

System Size Height (H) in. (mm) Width (W) in. (mm) Depth (D) in. (mm) Weight-Net lbs. (kg)

12K (115V) 21.85(555) 30.31(770) 11.81(300) 57.8(26.2)

12K (208/230V) 21.85(555) 30.31(770) 11.81(300) 53.8(24.4)

18K (208/230V) 21.81(554) 31.50(800) 13.11(333) 70.1(31.8)

24K (208/230V) 27.64(702) 33.27(845) 14.29(363) 88.6(40.2)

HeatPump

System Size Height (H) in. (mm) Width (W) in. (mm) Depth (D) in. (mm) Weight-Net lbs. (kg)

12K (115V) 21.85(555) 30.31(770) 11.81(300) 69.0(31.3)

9K (208/230V) 21.85(555) 30.31(770) 11.81(300) 63.0(28.6)

12K (208/230V) 21.85(555) 30.31(770) 11.81(300) 65.5(29.7)

18K (208/230V) 21.81(554) 31.50(800) 13.11(333) 79.6(36.1）

24K (208/230V) 27.64(702) 33.27(845) 14.29(363) 114.2(51.8)

19.17(487) W1

2.76(70) W

11

.73

(298)

21

.85

(555)

11.81(300) D

H

0.4

7(1

2)

2.3

6(6

0)

3.6

6(9

3)

H1

H2

D1

30.31(770) W

30.66(779) W3

13

.07

(322)

D2

0.98(25) B1

3.5

4(9

0)

B2

2.42(61.5) A2

0.47(12) A1

R0.

24(6

)

11

.26

(286)

D3

Unit: inch(mm)

Fig. 1 - Sizes 9K and 12K


DIMENSIONS − OUTDOOR (CONT)

31.50 (800)

20.24 (514)21

.81

(554

)

2.36

(60)

3.37

(85.

5)

13.3

9 (3

40)

0.47

(12)

12.2

4 (3

11)

12.8

0 (3

25)

13.11 (333)

2.76 (7 0)

H

H1

H2

D1D2 D3

2.43 (6 1.8)

4.17

(106

)

0.87 (2 2)R 0.79 (R 20)

R 0.24 (R 6)

2.43 (6 1.6)

D

W

W1

W2

B1

B2

A2

A1

Unit: inch(mm)Fig. 2 - Size 18K


DIMENSIONS − OUTDOOR (CONT)

Unit: inch (mm)Fig. 3 - Size 24K


CLEARANCES

A

D B

Air-outlet

Air-inlet

C

E

Fig. 4 - Outdoor Unit Clearance

Table 5—ClearancesUNIT MINIMUM VALUE in. (mm)

A 24 (610)

B 24 (610)

C 24 (610)

D 4 (101)

E 4 (101)

NOTE: The outdoor unit must be mounted at least 2in. (50mm) above the maximum anticipated snow depth.

118in (300cm) or more

19in (48cm) or more on a multiple parallel unit arrangement4in (10cm) or more on a single parallel unit arrangement

24in (60cm) or more

59in (150cm) or more on a multiple parallel unit arrangement24in (61cm) or more on a single parallel unit arrangement

9.8in (25cm) or more for proper airflow24in (61cm) or more is recommended for service

9.8in (25cm)or more for proper airflow 24in (61cm) or more is recommended for service

Fig. 5 - Clearances for Multiple Units


ELECTRICAL DATATable 6—Electrical Data

Cooling Only

Outdoor Unit Size 12K 12K 18K 24K

Volts-PH-Hz (115V) (208/230V) (208/230V) (208/230V)

Max – Min*Oper. Voltage

127-104 253-187 253-187 253-187

Power SupplyMCA 7 7 11 16

MOCP 15 15 15 25

Compressor RLA 9.5 4.5 7 11

Outdoor Fan Motor

FLA 0.6 0.4 0.5 0.6

Rated HP 0.054 0.054 0.065 0.068

Output 40 40 48 45

Heat Pump

Outdoor Unit Size 12K 9K 12K 18K 24K

Volts-PH-Hz (115V) (208/230V) (208/230V) (208/230V) (208/230V)

Max – Min*Oper. Voltage

127-104 253-187 253-187 253-187 253-187

Power SupplyMCA 13 8 10 15 18

MOCP 20 15 15 20 25

Compressor RLA 10.5 5.5 6.8 11.5 12

Outdoor Fan Motor

FLA 0.6 0.4 0.4 0.5 0.6

Rated HP 0.054 0.054 0.054 0.054 0.068

Output 40 40 40 40 50

*Permissible limits of the voltage range at which the unit will operate satisfactorily.

LEGEND

FLA - Full Load Amps

MCA - Minimum Circuit Amps

MOCP - Maximum Over-Current Protection

RLA - Rated Load Amps

WIRINGAll wires must be sized per NEC (National Electrical Code) or CEC(Canadian Electrical Code) and local codes. Use Electrical Data tableMCA (minimum circuit amps) and MOCP (maximum over currentprotection) to correctly size the wires and the disconnect fuse orbreakers respectively.Recommended Connection Method for Power and CommunicationWiring:

The main power is supplied to the outdoor unit. The field supplied 14/3stranded wire with ground with a 600 volt insulation rating,power/communication wiring from the outdoor unit to indoor unitconsists of four (4) wires and provides the power for the indoor unit.Two wires are line voltage AC power, one is communication wiring (S)and the other is a ground wire. Wiring between indoor and outdoor unitis polarity sensitive. The use of BX wire is NOT recommended.

If installed in a high Electromagnetic field (EMF) area andcommunication issues exists, a 14/2 stranded shielded wire can be usedto replace L2/N and (S) between outdoor unit and indoor unit landingthe shield onto ground in the outdoor unit only.

EQUIPMENT DAMAGE HAZARDFailure to follow this caution may result in equipmentdamage or improper operation.Wires should be sized based on NEC and local codes.

CAUTION!

CAUTION!

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damageor improper operation. Be sure to comply with local codes while running wire from

the indoor unit to the outdoor unit. Every wire must be connected firmly. Loose wiring may

cause the terminal to overheat or result in unit malfunction.A fire hazard may also exist. Ensure all wiring is tightlyconnected.

No wire should touch the refrigerant tubing, compressor orany moving parts.

Disconnecting means must be provided and shall be locatedwithin sight and readily accessible from the air conditioner.

Connecting cable with conduit shall be routed through thehole in the conduit panel.


CONNECTION DIAGRAM

SL N

115-1-60

Power Supply115-1-60

Main L N S L N

Power to Indoor Unit

GND

Ground

CONNECTING CABLEOUTDOOR TO INDOOR

Indoor SignalHighVoltage115-1-60

GND

115-1-60FIELD POWER SUPPLY

Indoor SignalHighVoltage

Indoor UnitPower Supply

SL1 L2

208/230-1-60

Power Supply Main

L1 L2 S L1 L2

Indoor UnitPower Supply

CONNECTING CABLEOUTDOOR TO INDOOR

208/230-1-60


GND

Ground

Power toIndoor Unit


GND

208/230-1-60FIELD POWER SUPPLY

208/230-1-60

115V Indoor Unit 115V Outdoor Unit 230V Indoor Unit 230V Outdoor UnitFig. 6 - Connection Diagrams

Notes:1. Do not use thermostat wire for any connection between indoor and outdoor units.2. All connections between indoor and outdoor units must be as shown. The connections are sensitive to polarity and will result in a fault code.

WIRING DIAGRAMS

COMPRESSOR

Y/G

4-WAY

CN 50

DC-FANOPTIONAL:DC-FAN

CN 7

3

AC-FA

N

OPTIONAL: AC-FAN

5CN 25CN 60

OPTIONAL

CRANKCASE HEATER

CN 17

OPTIONAL

LB

EU

BROWN

YELLOW OR BLACK

SN N

DE

R LB

EU

Y/GL

Y/G

AMBIENT TEMP. SENSOR

DISCHARGE TEMP. SENSOR

CN 21

CONDENSER TEMP . SENSOR

Y/G

CN 1A

Y/G

Y/G

3

CN4_

1CN

4_2

CN4_

3

CN4_

4

REACTOR

CAPACI

TOR

BROW

N(BL

ACK)

BROW

N(BL

ACK)

BLACK

(BROW

N)

BLACK

(BROW

N)

Y/G

22

BLACK

WV

REDBLUE

U5

GRAYBLACK

GRAY3

BLACK2

BROWN1

BROWNO

PT

ION

ALT

NIOJ

TS

AF

NOTE: The connection wires for thereactor and the capacitor should bethe same color; either black or brown.

Notes:This symbol indicates the elementis optional, the actual shape shallprevail.

16022000B23477

Input: 115V high voltage connector with

L/N/signal/ground

Output: 0~320VDC to control DC FAN

Output:115VAC High voltage connector for

power factor corrector(PFC)

Input: temperature acquisition (0~5VDC)

Output: 0~115 VAC to control AC FAN

Connector for electronic expansion

valve(0-12VDC)

Output: 115 VAC to control 4-way valveOutput: 115VAC to control crankcase heater

Fig. 7 - Wiring Diagram Size 12K (115V)


WIRING DIAGRAMS (CONT)

4-WAY


CN 7

3

CN 60OPTIONAL

CRANKCASE HEATER

CN 17OPTIONAL

BLUE

BROWN

YELLOW OR BLACK

INDOOR UNIT

SL2 L2

POWER SUPPLY

RED

BLUE OR BLACK

Y/GL1

Y/G



CN 21

CONDENSER TEMP. SENSOR

Y/G

CN 1A

Y/G

Y/G

COMPRESSOR

Y/G

CN 503

U V W

BLUE

RED

BLACK

AC-FANCAPACITOR

OPTIO

NAL: AC-FAN

5

3Y/G

Notes:This symbol indicates the element is optional, the actual shape shallprevail.

CN 32CN 9

REACTOR 1005AL

OPTIONAL

BLUE

BLUE

MAIN BOARD

CN 25

RED

BLUE

~


L/N/signal/ground

Output: 0~320V DC to connect DC FAN

To connect PFC reactor

Input: temperature sensor connector (0~5V DC)

Output: 0~220V AC to connect AC FAN

Output: 0~320V AC to connect compressor

Output: 0~220V AC to connect 4-way valveOutput: 220V AC to connect crankcase heater

Fig. 8 - Wiring Diagram − Sizes 09K, 12K (208−230V)


WIRING DIAGRAMS (CONTINUED)

123

UVW

CN60

COMPRESSOR

Y/G

REDBLUE

BLACK

OUTDOORMAINPCB

BLUE

BLACKRED

CN13CN12

W-4AY

REACTOR

BLUE

BLUE

UVW

Y/G

RED

L1 L2 S L1 L2

BLACK(BLUE)

L1 L2

OPTIONAL

CN16

OPTIONAL:the electric heating belt of compressor

HEATER 1

OUTDOOR WIRING DIAGRAM

OUT DOOR DC FAN

CN414

3

OUT DOOR AC FAN

F NA PAC

TI CARO

BROWNBLUE

CN5

Applicable to the units adopting DC motor only

Applicable to the units adopting AC motor only

Y/G

CN30

CN10CN1

CONDENSER TEMPERATURE SENSOR

OUTDOOR AMBIENTTEMPERATURE SENSOR

WHITE

BLAC

K

DISCHARGE SENSOR

KCALB

DER

CN17

(RED

)

BLACK

(BLACK)CN2

CN7CN8

Y/G

CN6-1

NWORB

BLUE

YELLOW

CN3


L1/L2/signal/ground


Output: PWM for UVW to control

Compressor(0~320VAC)Output: 220V AC to control crankcase heater

Output: 0~220V AC to control 4-way valveInput: Temperature acquisition(0-5VDC)

Output: 0~220VAC to control AC FAN

CN12/CN13 Output: Connection of the high voltage (REACTOR)

Fig. 9 - Wiring Diagram Sizes 18K − 24K (Heat Pump Units)


WIRING DIAGRAMS (CONTINUED)

4-WAY


CN 414

3

CN 60

OPTIONAL

CRANKCASE HEATER

CN 16

OPTIONAL



CN 17

CONDENSER TEMP. SENSORY/G

OUTDOORMAINPCB

BLUE

BROWN

BLACK

SL2 L1 L2

RED

BLUE

L1Y/G

Y/G

CN 3

Y/G

Y/G

Y/G

OPTIONAL

CAPACITOR

OPTIONAL: AC-FAN

5

3

CN 5

Y/G

L1 L2

Notes:This symbol indicatesthe element is optional,the actual shape shallprevail.

S

Yellow

Red

Blue

According to the real objects

16022000B23636

COMPRESSOR

BLUE

BLACK

CN 21

CN 29CN 28CN 27

BLUERED

BLACK

WVU


L1/L2/signal/ground


Output: PWM for UVW to control

Compressor(0~320VAC)Output: 220V AC to control crankcase heater

Output: 0~220V AC to control 4-way valveInput: Temperature acquisition(0-5VDC)

RED

Output: 0~220VAC to control AC FAN

Fig. 10 - Wiring Diagram Sizes 18K − 24K (Cooling Only Units)


REFRIGERATION CYCLE DIAGRAMS

LIQUID SIDE

GAS SIDE

HEATEXCHANGE(EVAPORATOR)

HEATEXCHANGE(CONDENSER)

COMPRESSOR

2−WAY VALVE

3−WAY VALVE

4−WAY VALVE

COOLING

HEATING

T2 Evaporatortemp. sensor

T1 Room temp.sensor

ACCUMULATOR

INDOOR OUTDOOR

CHECK VALVE(Heating Model only)

CAPILIARY TUBE

Fig. 11 - Heat Pumps


REFRIGERANT LINESGeneral Refrigerant Line Sizing

1. The outdoor units are shipped with a full charge of R410Arefrigerant. All charges, line sizing, and capacities are based onruns of 25ft. (7.6 m). For runs over 25 ft. (7.6 m), consult thelong−line applications section for the proper charge adjustments.

2. The minimum refrigerant line length between the indoor andoutdoor units is 10 ft. (3 m).

3. Refrigerant lines should not be buried in the ground. If it isnecessary to bury the lines, not more than 36 in (914 mm)should be buried. Provide a minimum 6in (152 mm) vertical riseto the service valves to prevent refrigerant migration.

4. Both lines must be insulated. Use a minimum of 1/2in. (12.7mm) thick insulation. Closed−cell insulation is recommended inall long−line applications.

5. Special consideration should be given to isolatinginterconnecting tubing from the building structure. Isolate thethe tubing so vibration or noise is not transmitted into thestructure.

IMPORTANT: Both refrigerant lines must be insulated separately.

Table 7 lists the maximum lengths allowed.

Table 7—Piping and Refrigerant InformationSystem Size 12V (115V) 9K (208-230V) 12K (208-230V) 18 (208-230V) 24K (208-230V)

Piping

Min. Piping Length ft. (m) 9.8(3) 9.8(3) 9.8(3) 9.8(3) 9.8(3)

Standard Piping Length ft. (m) 24.6(7.5) 24.6(7.5) 24.6(7.5) 24.6(7.5) 24.6(7.5)

Max. outdoor-indoorheight difference

(OU higher than IU)ft. (m) 32(10) 32(10) 32(10) 65(20) 65(20)

Max. outdoor-indoorheight difference

(IU higher than OU)ft. (m) 33(10) 33(10) 33(10) 66(20) 66(20)

Max. Piping Length withno additional refrigerant

charge per System(Standard Piping length)

ft. (m) 24.6(7.5) 24.6(7.5) 24.6(7.5) 24.6(7.5) 24.6(7.5)

Total Max. PipingLength per system

ft. (m) 82(25) 82(25) 82(25) 98(30) 98(50)

Additional refrigerantcharge (between Standard

– Max piping length)Oz/ft (g/m) 0.161(15) 0.161(15) 0.161(15) 0.161(15) 0.322(30)

Suction Pipe(size - connection type)

In (mm) ø1/2(12.7) ø3/8(9.52) ø1/2(12.7) ø1/2(12.7) ø5/8(15.9)

Liquid Pipe(size - connection type)

In (mm) ø1/4(6.35) ø1/4(6.35) ø1/4(6.35) ø1/4(6.35) ø3/8(9.52)

Refrigerant

Refrigerant Type Type R410A R410A R410A R410A R410A

Cooling Only ModelsCharge Amount

Lbs (kg) 1.30(0.59) 1.06(0.48) 1.30(0.59) 2.1(0.95) 2.65(1.2)

Heat Pump ModelsCharge Amount

Lbs (kg) 2.12(0.96) 1.76(0.8) 2.12(0.96) 2.82(1.28) 3.97(1.8)

Long Line Applications:

1. No change in line sizing is required.

2. Add refrigerant per Table 7.


SYSTEM EVACUATION ANDCHARGING

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipmentdamage or improper operation.

Never use the system compressor as a vacuum pump.

CAUTION!

Refrigerant tubes and indoor coil should be evacuated using therecommended deep vacuum method of 500 microns. Always break avacuum with dry nitrogen.

System Vacuum and ChargeUsing Vacuum Pump

1. Completely tighten all flare nuts and connect manifold gagecharge hose to a charge port of the low side service valve (seeFig. 12).

2. Connect the charge hose to the vacuum pump.3. Fully open the low side of manifold gage (see Fig. 13).

4. Start the vacuum pump5. Evacuate using the triple evacuation method.

6. After evacuation is complete, fully close the low side of mani-fold gage and stop the vacuum pump operation.

7. The factory charge contained in the outdoor unit is good for upto 25 ft. (8 m) of line length. For refrigerant lines longer than25 ft. (8 m), add refrigerant as specified in the ADDITIONALREFRIGERANT CHARGE table in this document.

8. Disconnect the charge hose from the charge connection of thelow side service valve.

9. Fully open service valves B and A.10. Securely tighten the service valves caps.

Outdoor Unit Indoor UnitRefrigerant

Service Valve

Low Side

High Side

A

B

C

D

Fig. 12 - Service Valve

Manifold Gage

500 microns

Low side valve High side valve

Charge hose Charge hose

Vacuum pump

Low side valve

Fig. 13 - Manifold

Deep Vacuum Method

The deep vacuum method requires a vacuum pump capable of pulling avacuum of 500 microns and a vacuum gage capable of accuratelymeasuring this vacuum depth. The deep vacuum method is the mostpositive way of assuring a system is free of air and liquid water (see Fig.14).

500

MINUTES0 1 2 3 4 5 6 7

1000

1500

LEAK INSYSTEM

VACUUM TIGHTTOO WET

TIGHTDRY SYSTEM

2000MIC

RO

NS

2500

3000

3500

4000

4500

5000

Fig. 14 - Deep Vacuum Graph

Triple Evacuation MethodThe triple evacuation method should be used. Refer to Fig. 15 andproceed as follows:

1. Pump the system down to 1500 microns and allow the pump tocontinue operating for an additional 15 minutes.

2. Close the service valves and shut off the vacuum pump.

3. Connect a dry nitrogen cylinder and regulator to the system andbreak vacuum until the system reaches 2 psig.

4. Close the service valve and allow the system to stand for 1hr.During this time, the dry nitrogen can diffuse throughout thesystem absorbing moisture.

5. Pump the system down to 1000 microns.6. Break the vacuum with dry nitrogen (2 psig).

7. Pump the system down to 500 microns.

8. Perform the hold test for 30 minutes.

CHECK FOR TIGHT, DRY SYSTEM(IF IT HOLDS DEEP VACUUM)

EVACUATE TO 1500 MICRONS

EVACUATE TO 500 MICRONS MINIMUM (HOLD FOR 30 MINUTES)

RELEASE CHARGE INTO SYSTEM BY OPENING VALVES COMPLETELY

BREAK VACUUM WITH DRY NITROGEN TO 2 PSIG

EVACUATE TO 1000 MICRONS

BREAK VACUUM WITH DRY NITROGEN TO 2 PSIG

Fig. 15 - Triple Evacuation Method

Final Tubing CheckIMPORTANT: Check to be certain factory tubing on both indoorand outdoor unit has not shifted during shipment. Ensure tubes arenot rubbing against each other or any sheet metal. Pay closeattention to feeder tubes, making sure wire ties on feeder tubes aresecure and tight.


ELECTRONIC FUNCTIONSAbbreviation

T1: Indoor room temperatureT2: Coil temperature of evaporator

T3: Coil temperature of condenserT4: Outdoor ambient temperature

T5: Compressor discharge temperatureDisplay function

Icon explanation on indoor display board

Fig. 16 - Digital display Displays the temperature settings when the air conditioner is

operational.

Displays the room temperature in FAN mode.

Displays the self−diagnostic codes.

Displays for three seconds when Timer ON, Fresh,Swing, Turbo or Silence feature is activated.

Displays for three seconds when Fresh, Swing, Turbo, orSilence feature is cancelled.

Displays under defrosting operation.

Displays when anti−cold air feature is activated underheating mode.

Displays during self clean operation (if applicable).

Displays under 8°C heating operation (if applicable).

When ECO function (optional) is activated, the illuminates gradually one by one as

in one second intervals.

Fig. 17 - WIFI control display (optional)

Displays when the WIFI control feature is activated (Notavailable on some units).NOTE: A guide on using the infrared remote is not includedin this literature package.

Main ProtectionThree minute delay for compressor restart

Less than a 1 minute delay for the initial startup and a 3 minute delayfor subsequent starts.

Compressor top temperature protectionThe unit stops working when the compressor top temperature protectorcuts off, and restarts after the compressor top temperatrue protectorrestarts.

Compressor discharge temperature protectionCompressor discharge temp. T5>239F(115C) for 5s, compressorstops.Fan Speed is Out of Control

When the indoor fan speed remains too low (300RPM) the unit stopsand the LED displays the failure.

Inverter module protectionThe inverter module has a protection function for current, voltage andtemperature. If any of these protections engage, the correspondingcode displays on the indoor unit and the unit stops working.Compressor preheating functions

Preheating permitting condition: When the T4 (outdoor ambienttemperature)<37.4F (3C), the preheating function engages.Zero Crossing Detection Error Protection

If the AC detects that the time interval is not correct for a continuousperiod of 240s, the unit stops and the LED displays the failure. The correctzero crossing signal time interval should be between 6−13ms.

Sensor Protection at Open Circuit and Breaking Disconnection

When there is only one malfunctioning temperature sensor, the airconditioner keeps working yet displays the error code, in case of anyemergency use. When there is more than one malfunctioningtemperature sensor, the air conditioner stops working.Refrigerant leakage detection

This function is only active in the COOLING mode. The functionhelps prevent the compressor from being damaged by a refrigerantleakage or a compressor overload.Open condition:When the compressor is active, the evaporator T2 coil temperaturevalue has no or very little change.

Operation Modes and FunctionsFAN Mode

1. Outdoor fan and compressor stop

2. Temperature setting function is disabled, and no settingtemperature is displayed.

3. Indoor fan can be set to high/med/low/auto4. The louver operates the same in the COOLING mode.

5. Auto fan


Fig. 18 - Auto FanCOOLING Mode

Compressor Running Rules:

When T1Ts < 28.4F(2C), the compressor stops.

When T1TS > 31.1F(0.5C), the compressor activates.

When the AC runs in the mute mode, the compressor runswith low frequency.

When the current is more than setting value, the currentprotection function activates, and the compressor stops.

Outdoor Fan Running Rules:

The outdoor unit runs at a different fan speed according to T4. Fordifferent outdoor units, the fan speeds differ.

Fig. 19 - Outdoor Fan Running Rules

The auto fan adheres to the following rules.

Fig. 20 - Auto Fan

Fig. 21 - Compressor Temperature Protection

When the condenser temperature temperature is higher than the settingvalue, the compressor stops.

Compressor Running RulesWhen T1−Ts>−ΔT, the compressor stops, when T1−TS<ΔT−1.5，thecompressor will be on. ΔT is the programmed parameter oftemperature compensation. When the AC run in mute mode, thecompressor runs with low frequency.

When the current is more than setting value, the current protectionfunction is activated and the compressor stops.

Outdoor Fan Running RulesThe outdoor unit runs at different fan speed according to T4. Fordifferent outdoor units, the fan speeds are different.

Fig. 22 - Outdoor Fan Running Rules

Auto Fan Action in HEATING Mode


a

b

c

d

T1

e

Fig. 23 - Auto Fan Action in HEATING Mode

DEFROST ModeThe air conditioner enters the DEFROST mode according to the T3temperature value and the T3 temperature change value range plus thecompressor running time.

During the DEFROST mode, the compressor continues to runs, theindoor and outdoor motors stop, and the indoor unit defrost lamp

illuminates and appears.

If any one of the following items is satisfied, the defrosting finishes andthe machine reverts to the normal heating mode.

−−−−T3 rises to be higher than TCDE1C.−−−−T3 keeps to be higher than TCDE2C for 80 seconds.−−−−The machine has run for 15 minutes in defrosting mode.

Evaporator Coil Temperature Protection

TEstop

T2

Resume

Off

DecreaseTEdown

TEH2Hold

Fig. 24 - Evaporator Coil Temperature ProtectionNOTE: The following applies to Fig. 24:

Off: Compressor stops

Decrease: Decrease the running frequency to the lower level

Hold: Keep the current frequency

Resume: No limitation for frequency

When the evaporator temperature is higher than the setting protectionvalue, the compressor stops.

Auto−ModeThis mode can be chosen with the remote controller and the settingtemperature can be changed between 62.6F(17C)~86F(30C).In the AUTO mode, the machine chooses the COOLING, HEATINGor FAN−ONLY mode according to ΔT (ΔT =T1−Ts).

Table 8—Auto Mode

ΔT=T1-Ts Running mode

ΔT＞2 Cooling

-2≤ΔT≤2 Fan-only

ΔT<-2 Heating

The indoor fan runs under auto fan in the relevant mode. The louveroperates same as in relevant mode. If the machine switches modebetween HEATING and COOLING, the compressor stops for 15minutes and then chooses the mode according to T1−Ts. If the settingtemperature is modified, the machine chooses the running functionagain.DRY mode

Indoor fan speed is fixed at breeze and can not be changed.

The louver angle is the same as in the cooling mode.Low indoor room temperature protection

In the DRYING mode, if the room temperature is lower than 50F(10C), the compressor stops and does not resume until the roomtemperature exceeds 53.6F (12C).Evaporator antifreezing protection, condenser high temperatureprotection and outdoor unit frequency limit are active and are the sameas that in the cooling mode. The outdoor fan operates the same as incooling mode.

Forced Operation Function

Enter forced operation function: When the machine is off,press Touch to engage the the Forced Auto Mode. PressTouch again, within 5 seconds, to engage the Forced CoolingMode. In Forced Auto, forced cooling or any other operationmode, press the touch button to turn off the unit. In the forcedoperation mode, all general protections and remote controlare available.

Operation rules:

Forced cooling mode: The compressor runs at the F2frequency and the indoor fan runs as a breeze. After runningfor 30 minutes, the unit enters the auto mode as 75.2F(24C) setting temperature.

Forced auto mode: The forced auto mode is the same as thenormal auto mode with a 75.2F (24C) setting temperature.

AUTO−RESTART Function

The indoor unit is equipped with the AUTO−RESTART function,which is carried out through an auto−restart module. In the event of asudden power failure, the module memorizes the setting conditionsprior to the power failure. The unit resumes the previous operationsetting (not including the SWING function) automatically three (3)minutes after the power returns.If the memorization condition is the FORCED COOLING mode, theunit will run in the COOLING mode for 30 minutes and turn to theAUTO mode at the 75.2F(24C) setting temperature.If the air conditioner is off before the power turns off and the airconditioner is required to start up, the compressor delays start up for 1minute before powering on. In other instances, the compressor waitsthree (3) minutes before restarts.


Refrigerant Leak Detection

With this new technology, the display area displays “EC” when theoutdoor unit detects a refrigerant leak. This function is only active incooling mode. It can better prevent the compressor being damaged byrefrigerant leakage or compressor overload.

Open Condition: When the compressor is active, the value of the Coiltemperature of evaporator T2 has no change or very little change.46F (8C) Heating

When the compressor is running, the indoor fan motor runs without theANTI−COLD air function. When the compressor is off, the indoor fanmotor is off.

Point Check FunctionPress the remote controller’s LED DISPLAY or LED or MUTE button three times, and then press the AIR DIRECTION or SWING button threetimes in ten seconds, the buzzer rings for two seconds. The air conditioner enters into the information enquiry status.Press the LED DISPLAY or AIR DIRECTION button to check the next or front item’s information.When the air conditioner enters the information enquiry status, it displays the code name in 2 seconds (see Table 9).

Table 9—Information EnquiryENQUIRY INFORMATION DISPLAYING CODE MEANING

T1 T1 T1 temp.

T2 T2 T2 temp.

T3 T3 T3 temp.

T4 T4 T4 temp.

T2B Tb T2B temp.

TP TP TP temp.

TH TH TH temp.

Targeted Frequency FT Targeted Frequency

Actual Frequency Fr Actual Frequency

Indoor Fan Speed IF Indoor fan speed

Outdoor Fan Speed OF Outdoor fan speed

EXV Opening Angle LA EXV opening angle

Compressor continuous running time CT Compressor continuous running time

Compressor stop causes ST Compressor stop causes

Reserve A0

Reserve A1

Reserve b0

Reserve b1

Reserve b2

Reserve b3

Reserve b4

Reserve b5

Reserve b6

Reserve dL

Reserve Ac

Reserve Uo

Reserve Td


When the air conditioner enters the information enquiry status, it displays the code value for 25 seconds (see Table 10).

Table 10—Information EnquiryENQUIRY

INFORMATIONDISPLAY VALUE MEANING REMARK

T1,T2,T3,T4,T2B,TP,TH,

TargetedFrequency,

ActualFrequency

-1F,-1E,-1d,-1c,-1b,-1A

-25,-24,-23,-22,-21,-201. The displaying temperature is the actual value.

2. The temperature is C no matter what kind of remote controller is used.3. T1,T2,T3,T4,T2B display range:-25~70, TP displayrange:-20~130.4. Frequency display range: 0~159HZ.5. If the actual value exceeds the range, it displays themaximum value or minimum value.

-19—99 -19—99

A0,A1,…A9 100,101,…109

b0,b1,…b9 110,111,…119

c0,c1,…c9 120,121,…129

d0,d1,…d9 130,131,…139

E0,E1,…E9 140,141,…149

F0,F1,…F9 150,151,…159

Indoor fan speed/Outdoor fan speed

0 OFF

1,2,3,4Low speed, Medium speed, High

speed, TurboFor some big capacity motors.

14-FFActual fan speed = Display valueturns to decimal value and then

multiply 10. The unit is RPM.

For some small capacity motors, the display value is from 14-FF(hexadecimal), the corresponding fan speed range

is from 200-2550 RPM.

EXV opening angle 0-FFActual EXV opening value =

Display value turns to decimalvalue and then multiply 2.

Compressorcontinuous running

time0-FF 0-255 minutes

If the actual value exceeds the range, it displays themaximum value or minimum value.

Compressor stopcauses

0-99For the detailed meaning, please

consult with engineerDecimal display

Reserve 0-FF


TROUBLESHOOTING

SafetyElectricity power is kept in capacitors even if the power supply is shut off.

NOTE: Remember to discharge the electricity power in capacitor.

Electrolytic Capacitors

(HIGH VOLTAGE! CAUTION!)

Fig. 25 - Electrolytic Capacitors

For other models, please connect discharge resistance (approximately 100Ω 40W) or a soldering iron (plug) between the +, − terminals of theelectrolytic capacitor on the contrary side of the outdoor PCB.

Fig. 26 - Discharge Position

NOTE: Fig. 26 is for reference only. The plug on your unit may differ.


OUTDOOR UNIT DIAGNOSTIC GUIDES

Table 11—Diagnostic GuidesOPERATION LAMP TIMER LAMP DISPLAY LED STATUS

1 time X E0 Indoor unit EEPROM parameter error

2 times X E1 Indoor / outdoor units communication error

3 times X E2 Zero-crossing signal detection error

4 times X E3 Indoor fan speed has been out of control

5 times X E4 Indoor room temperature sensor T1 open circuit or short circuit

6 times X E5 Evaporator coil temperature sensor T2 open circuit or short circuit

7 times X EC Refrigerant leakage detection

1 time O F0 Overload current protection

2 times O F1 Outdoor ambient temperature sensor T4 open circuit or short circuit

3 times O F2 Condenser coil temperature sensor T3 open circuit or short circuit

4 times O F3 Compressor discharge temperature sensor T5 open circuit or short circuit

5 times O F4 Outdoor unit EEPROM parameter error

6 times O F5 Outdoor fan speed has been out of control

1 time P0 IPM malfunction or IGBT over-strong current protection

2 times P1 Over voltage or over low voltage protection

3 times P2 High temperature protection of IPM module or compressor top

4 times P3* Outdoor ambient temperature too low.

5 times P4 Inverter compressor drive error

6 times P5 Indoor units mode conflict (multi-zone ONLY)

O（light） X（off）（flash）


PCB DIAGRAMS

N

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17122000019195

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[1.6] 2015−09−30

US−KFR−35W/BP3N1−(115V+RX62T+41560).D.13.WP2−1

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R2530.75 ¦,/1W

R2540.75 ¦,/1Wconnect to compressor heaterwhen is on, 100−130V AC output

connect to 4−way Valvewhen is on, 100−130VAC OUTPUT

connect to PFC Capacitorwhen is on, 100−130V ACoutput

connect to reactorwhen is on, 100−130V AC output

connect toGround

connect to N−line(100−130VAC INPUT)

connect to L−line(100−130VAC INPUT)

connect to indoor unitcommunication

UV

W

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0VAC (standby)

connect to DC Motor

external driver motor

connect to Electric Expansion Valve

pipe temp.sensor& room temp.sensor&Exaust temp. sensor

6 5 4 3 2 1TP T4 T3

RT

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+12V DC pulse wave between (+4)−GND

+12V DC+12V DC

6 5

4 3

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AC fan motor5432

1low speed

N linehigh speed

FAN Starting Capacitor

FAN Starting Capacitor

connect to chassis heaterwhen is on, 100−130VAC OUTPUT

UVW

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C(standby)

10−230VA

C¡¯(running)

connect tocom

pressor

connect to PCcommunication

EEPROM ProgrammerPort

Test Port

bridge

IPM for compressor

IPM for DC FAN

P

Fig. 27 - Size 12k (115V)

+

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CN

60

+

IC405

DAS1

RC2

ON

21

ON

433

41 2

SW2

RY5

R23R21

CN

17

CN11

CN10

C135

L5L4L3L2

+DZ201

L601

CN16

CN1

CN2

CN3

CN3_1

C61

3

IC103

CN507

+

D403

IC404

CN1A

FUSE1T20A/250VAC

E405

E410

RY4

IC104

IC101

R10

4

R60

4

R156

C27

5

DZ204 R17

2

R195

C11

7

R103

R401

D10

4

E409

PTC1

CN32

BR1

E407

E404 E283

+ E282+E281

+

E280

RY1

D60

1

Q601

C2

C3

C4

C5

C6

C7

C11

C16

C102

C103C104C105

C106 C11

1

C112

C113

C11

4

C115

C116

C118

C11

9

C120C121

C12

3C

124

C125

C126

C127C128C129C130C131

C132

C13

3

C271C272

C273

C274

C302

C30

3

C30

5

C312 C322

C401

C402

C404

C405

C408

C409

C41

0

C50

3C

504

C50

5C

506C

507

C50

8

C50

9

C60

1

C605

C606

C612

C614

C615

CN

7

CN9

CN31

CN505

D1D2

D402D406

DZ202

DZ203

DZ301DZ302DZ303DZ304

DZ601

E1

E2

E101

E102

E103

E105

E107

E108

E401

E602

IC1

IC401IC403

IC60

1

IC602

IC60

3

LED101

NT

C2

OSC101

Q101

R2

R3

R10

1

R102

R105

R106

R107

R108

R11

0

R111R112

R11

4

R11

5

R11

6R

117

R12

0R

121

R124R125R126R127

R12

8

R129

R130R131

R13

2

R133

R13

5R

136

R13

7R

138

R140R142

R143

R144

R147R148R149

R150R152

R154R155

R15

7

R16

5

R16

8R

169

R17

0

R173

R174

R17

8

R17

9 R180R181

R18

2

R185R186R187

R188

R189

R19

0

R301

R315

R403

R40

4

R405

R406R407

R408

R42

7R

428

R42

9

R502R504

R506R508

R51

3

R516

R52

8

R60

1

R60

3

R605

R607

R608R610R611R612

R615

R616R617

R618

R61

9

R62

0

R626

RY2

ZR1

CN6

D401

D404

Rdi

IC102

D60

2 R17

1

C611

D101

C101

E106

C1

C520

ZR3

CN30

CN

29C

N28

C30

7C

308 C

309

C31

0

C311R303

R304R305

R306R314

R42

6

C32

0

C321

C32

3

C511C512

C513

IC301

R31

7R

318

R31

9R

320

R32

1

R32

2

R323

R51

7R

518

R519

R52

0

R521

R52

2

R52

3

CN50

E206

E605

C134

C314C316

C31

8

CN

25

D610

R196

RY3C62

4

R60

2 R623

C110C122

D407

R31

6

3W− 10m|??¨¤1%

R409

R410

R606

3W−

10m

1%

T401

C10

7

E109

R17

5R

176

IPM301

C31

9C30

6

C413

D103

R62

1

R421

IC2

C324

R122

R123

R11

8

C618R628

CN

15

IC105

R191

RY3A

ZR2

RC1

CN21

R1

C412

E30

0

E30

2

E30

3

C33

0

C33

1

C33

2

C333C334

connect to the terminal208−230V ACpower supply

connect to earth

CN60connect to 4−way valve

when 4−way is ON, output 208−230VAC

connect to compressor heater

power supply

CN17

AC fan motor

L low speed

N ground

H high speed

CN21/CN22exhaust temp. sensor& pipetemp.sensor& room temp.sensor

6 5 4 3 2 1TP T4 T3

RT

RT

+5V

DC

RT

+5V

DC

+5V

DC

connect to Electric Expansion Valve

+12

V D

C p

ulse

wav

e be

twee

n (+

1)−

GN

D+

12V

DC

pul

se w

ave

betw

een

(+2)

−G

ND

+12

V D

C p

ulse

wav

e be

twee

n (+

3)−

GN

D+

12V

DC

pul

se w

ave

betw

een

(+4)

−G

ND

+12

V D

C+

12V

DC

6 5 4 3 2 1

connect to indoor unit communication

HEAT2connect to chassis heaterwhen is on, 208−230VAC OUTPUT

U

V

W

10−200VAC¡¯ (running)

0VAC (standby)

connect to the DC compressor

Test PortConnect to PCcommunication EEPROM Programmer Port

FUSE1 20A/250VACConnect to DR module

U

V

W

10−200VAC¡¯ (running)

0VAC (standby)

connect to DC Motor

External driver motor

LED101 status light (Red)slow flicker:standby（ 0.5Hz）quick flicker:error（ 2Hz）continuous light: normally running

Connect to reactor

IPM for

compressor

IGBT

FRD

when heater is ON, output 208−230V AC

BR

P

N

Fig. 28 - Size 09k−12k (208−230V)


PCB DIAGRAMS (CONT)

Fig. 29 - Sizes 18k−24k (208−230V)

NOTE: After power on, LED3(Green color) and LED2(Red color) will flash if the unit has some problems.

Table 12—LED Codes

No. ProblemsLED3

(Green)LED2(Red)

IU display

1 Standby for normal O X

2 Operation normally X O

3 IPM malfunction or IGBT over-strong current protection X P0

4 Over voltage or too low voltage protection O O P1

5 EEPROM parameter error O E5

6 Inverter compressor drive error X P4

7 Inverter compressor drive error O P4

8 Inverter compressor drive error P4

O(light) X(off) (2.5Hz flash)


DIAGNOSIS AND SOLUTIONEEPROM Parameter Error Diagnosis and Solution (E0/F4)

Error Code E0/F4

Malfunction decision conditions Indoor or outdoor PCB main chip does not receive feedback from the EEPROM chip.

Supposed causes Installation mistake

PCB faulty

Troubleshooting

Yes

Replace the indoor/outdoormain PCB.

Power off, then restart the unit 2 minutes later.

EEPROM: A read−only memory whose contents can be erased and reprogrammed using a pulsed voltage. For the EEPROM chip location, pleaserefer to Fig 30 and Fig. 31.

Fig. 30 - Indoor PCB

Fig. 31 - Outdoor PCB

NOTE: The two pictures above are for reference only and they may differ from the actual unit.


DIAGNOSIS AND SOLUTION (CONT)Indoor / outdoor unit’s communication diagnosis and solution (E1)

Error Code E1

Malfunction Decision ConditionsIndoor unit does not receive the feedback from outdoor unit during 110 seconds and this conditionhappens four times continuously.

Supposed Causes Wiring mistake

Indoor or outdoor PCB faulty

Troubleshooting

Measure Vs., is it a positive fluctuation?(Vs represents the voltage S and N of theoutdoor unit. Red pan-S, Black pan-N)

Power off, then restart the unit 2 minutes later

Replace the indoor main PCB.Power on. Is the error resolved?

No

Check the indoor wiring connectionYes

Check whether thereactor is normal

Yes

No

Check the outdoor wiring connection

Replace the reactor

Yes

Replace the outdoor main PCB.Power on. Is the error resolved?

Replace the indoor main PCB

No

Replace the outdoor main PCB.

Yes

No

Yes

Yes


DIAGNOSIS AND SOLUTION (CONT)

Fig. 32 - Test the DC VoltageUse a multimeter to test the DC voltage between L2 port and S port of the outdoor unit. The red pin of the multimeter connects with the L2 port whilethe black pin is for the S port. When air conditioner is running normal, the voltage moves alternately between −50V to 50V. If the outdoor unit has amalfunction, the voltage will move alternately with positive value. If the indoor unit has malfunction, the voltage will have a certain value.

Fig. 33 - Test the Reactor Resistance

Use a multimeter to test the resistance of the reactor which does not connect with the capacitor. The normal value should be around zero (0) ohm.Otherwise, the reactor has a malfunction and needs to be replaced.


DIAGNOSIS AND SOLUTION (CONT)Zero crossing detection error diagnosis and solution (E2)

Error Code E2

Malfunction decision conditionsWhen the PCB does not receive a zero crossing signal feedback for 4 minutes or the zero crossing signaltime interval is abnormal.

Supposed causes Connection mistake

PCB faulty

Troubleshooting

Check if the connections andpower supply are normal.

Correct the connections. Turn on the unit when the power supply is good.No

Yes

Indoor main PCB is defective. Replace indoor

main PCB.


DIAGNOSIS AND SOLUTION (CONT)Fan speed has been out of control diagnosis and solution (E3/F5)

Error Code E3/F5

Malfunction decision conditionsWhen indoor fan speed remains too low (300RPM) for certain time, the unit stops and the LED displaysthe failure.

Supposed causes

Wiring mistake

Fan assembly faulty

Fan motor faulty

PCB faulty

Troubleshooting

Power off, then restart the unit 2 minutes later

Shut off the power supply,Rotate the fan by hand.

The unit operates normally.

Find the cause and resolve it.

Check the fan motor wiring

No

Yes

No

Correct the connections.No

NoReplace the fan motor

Yes

Yes

Measure the voltage for the fan motor from the main

PCB

Yes

Replace the main PCBNo


DIAGNOSIS AND SOLUTION (CONT)Index 1

1. Indoor or Outdoor DC Fan Motor (control chip is in fan motor)

Power on and when the unit is in standby, measure the voltage of pin1−pin3, pin4−pin3 in fan motor connector. If the voltage value is not inthe range shown in Table 13 or Table 14, the PCB has an issue and needs to be replaced.

Fig. 34 - Motor Connector

Table 13—DC motor voltage input and output (voltage: 220−240V~)NO. COLOR SIGNAL VOLTAGE

1 Red Vs/Vm 280V~380V

2 --- --- ---

3 Black GND 0V

4 White Vcc 14-17.5V

5 Yellow Vsp 0~5.6V

6 Blue FG 14-17.5V

Table 14—DC motor voltage input and output (voltage : 115V~)NO. COLOR SIGNAL VOLTAGE

1 Red Vs/Vm 140V~190V

2 --- --- ---

3 Black GND 0V

4 White Vcc 14-17.5V

5 Yellow Vsp 0~5.6V

6 Blue FG 14-17.5V

2. Outdoor DC Fan Motor (control chip is in the outdoor PCB)Power on the unit and check if the fan runs normally. If the fan runs normally, the PCB has an issue and needs to be replaced. If the fan doesnot run normally, measure the resistance of each two pins. If the resistance is not equal to each other, the fan motor has an issue and needs to bereplaced, otherwise the PCB has an issue and needs to be replaced.

3. Indoor AC Fan Motor

Power on the unit and set the unit in FAN mode at the high fan speed. Run for 15 seconds then measure the voltage of pin1 and pin2. If thevoltage value is less than 100V(208~240V power supply) or 50V(115V power supply), the PCB has an issue and needs to be replaced.


DIAGNOSIS AND SOLUTION (CONT)Open circuit or short circuit of temperature sensor diagnosis and solution (E4/E5/F1/F2/F3)

Error Code E4/E5/F1/F2/F3

Malfunction decision conditions If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure.

Supposed causes

Wiring mistake

Sensor faulty

PCB faulty

Troubleshooting

Check the connection between the temperature

sensor and PCB.Correct the connectionNo

Yes

Replace indoor or outdoor main PCB

Measure the resistance value of the sensor Replace the sensorNo

Yes

Fig. 35 - Check the connection


DIAGNOSIS AND SOLUTION (CONT)Refrigerant Leakage Detection diagnosis and solution (EC)

Error Code EC

Malfunction decision conditions

Define the evaporator coil temp.T2 of the compressor. It starts running in Tcool.

At first, 5 minutes after the compressor starts up, if T2 ＜Tcool－35.6F (Tcool－2 C) does not run for 4seconds and this situation occurs 3 times, the display area displays“EC”and the air conditioner willturn off.

Supposed causes

T2 sensor faulty

Indoor PCB faulty

System problems, such as leakage or blocking.

Troubleshooting

Check cool air blowing out from indoor air outlet

Yes

Yes

No

Check for system leaks

No

Power off, then restart the unit 2 minutes later.

Replace indoor PCB.

Yes

Repair the leakage and recharge the refrigerant.

Yes

Check for system blocking andclear the block

Check the T2 sensor


DIAGNOSIS AND SOLUTION (CONT)Overload current protection diagnosis and solution (F0)

Error Code F0

Malfunction decision conditions An abnormal current rise is detected by checking the specified current detection circuit.

Supposed causes

Power supply problems

System blockage

PCB faulty

Wiring mistake

Compressor malfunction

Troubleshooting

Check the power supply

Check the connections and wires

Stop the unitNo

Yes

No Correct the connections or replace the wires.

Yes

Replace the outdoor unit

Yes

Check the reactor No Replace outdoor main PCB

Check for system blockage

Yes

No Clear the blockage

Check the compressor resistance values

Yes

No Replace the compressor


DIAGNOSIS AND SOLUTION (CONT)IPM malfunction or IGBT over−strong current protection diagnosis and solution (P0)

Error Code P0

Malfunction decision conditionsWhen the voltage signal, that the IPM sends to the compressor drive chip is abnormal, the display LEDdisplays P0”and the air conditioner turns off.

Supposed causes

Wiring mistake

IPM malfunction

Outdoor fan assembly faulty


Outdoor PCB faulty

Troubleshooting

Check the wiring between main thePCB and the compressor

Correct the connection or replace the wires and connectors.Yes

No

Check the IPM No

Yes

Replace the IPM board or replace the main PCB

Check the outdoor fan and the outdoor unit ventilation No

Please refer to the solution of FanSpeed Has Been Out Of Control

malfunction

Yes

Check the compressor resistance values No Replace the compressor.

Yes

Replace the outdoor main PCB



Fig. 36 - P−U

Fig. 37 - P−V



Fig. 38 - P−W

Fig. 39 - N−U



Fig. 40 - N−V

Fig. 41 - N−W


DIAGNOSIS AND SOLUTION (CONT)Over voltage or too low voltage protection diagnosis and solution (P1)

Error Code P1

Malfunction decision conditions An abnormal voltage rise or drop is detected by checking the specified voltage detection circuit.

Supposed causes


System leakage or block

PCB faulty

Troubleshooting

Check the power supply

Check the connections and wires

Stop the unitNo

Yes

No Correct the connections or replace the wires.

Yes

Replace the reactor

Yes

No Replace the IPM boardCheck the voltage between P

and N

Check the reactor

Yes

No Replace outdoor main PCB

Fig. 42 - Test

NOTE: Measure the DC voltage between the P and N port. The normal value should be around 310V.


DIAGNOSIS AND SOLUTION (CONT)High temperature protection of compressor top diagnosis and solution (P2)

Error Code P2

Malfunction decision conditions If the sampling voltage is not 5V, the LED displays the failure.

Supposed causes


System leakage or block

PCB faulty

Troubleshooting

Yes

Tighten the screws and apply silicon grease.

Replace the outdoor control PCB.

No

Check if the Fastening screws on the PCB and IPM radiator

are fixed tightly.

For other models,


DIAGNOSIS AND SOLUTION (CONT)Inverter compressor drive error diagnosis and solution (P4)

Error Code P4

Malfunction decision conditionsAn abnormal inverter compressor drive is detected by a special detection circuit, including communicationsignal detection, voltage detection, compressor rotation speed signal detection, etc.

Supposed causes

Wiring mistake

IPM malfunction

Outdoor fan assembly faulty


Outdoor PCB faulty

Troubleshooting

Check the wiring between main PCB and compressor

Correct the connection or replace the wires and connectors.Yes

No

Check the IPM No

Yes

Replace the IPM board or replace the main PCB

Check the outdoor fan and the outdoor unit ventilation No

Please refer to the solution of FanSpeed Has Been Out Of Control

malfunction

Yes

Check the compressor resistance values No Replace the compressor.

Yes

Replace the outdoor main PCB


DIAGNOSIS AND SOLUTION (CONT)Main Parts CheckTemperature Sensor CheckingDisconnect the temperature sensor from the PCB, measure the resistance value with a tester.

Fig. 43 - Tester

Temperature sensors.Room temp.(T1) sensor,

Indoor coil temp.(T2) sensor,Outdoor coil temp.(T3) sensor,Outdoor ambient temp.(T4) sensor,

Compressor discharge temp.(T5) sensor.Measure the resistance value of each winding by using the multi−meter.


DIAGNOSIS AND SOLUTION (CONT)Compressor CheckingMeasure the resistance value of each winding by using the tester.

Fig. 44 - Tester

Table 15—Compressor CheckingPosition Resistance Value

ASN98D22UFZ ASM135D23UFZ ATF235D22UMT ATF250D22UMT

Blue - Red

1.57Ω 1.75 Ω 0.75 Ω 0.75 ΩBlue - Black

Red - Blue

Fig. 45 - Compressor Checking


DIAGNOSIS AND SOLUTION (CONT)IPM Continuity CheckTurn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure theresistance between P and UVWN; UVW and N.

Table 16—IPM Continuity CheckDigital Tester Normal Resistance Value Digital Tester Normal Resistance Value

(+)Red (-)Black

∞(Several MΩ)

(+)Red (-)Black

∞(Several MΩ)P

N U

NU V

V W

W (+)Red

Fan MotorMeasure the resistance value of each winding by using the tester.

Table 17—Fan MotorModel YKT-32-6-202L YKT-32-6-3L YKT-48-6-206 YKT-63-6-200L

Brand Tongde Welling Welling WellingBlack – RedMain

Ω 86 213 152 88.5

Blue –BlackAUX

Ω 64 156 142 138


Pressure on Service Port

Table 18—Cooling Chart

°F (°C ) ODT/IDT75

(23.89)85

(29.44)95

(35)105

(40.56)115

(46.11)

BAR 70/59 8.2 7.8 8.1 8.6 10.1

BAR 75/63 8.6 8.3 8.7 9.1 10.7

BAR 80/67 9.3 8.9 9.1 9.6 11.2


(23.89)85

(29.44)95

(35)105

(40.56)115

(46.11)

PSI 70/59 119 113 117 125 147

PSI 75/63 124 120 126 132 155

PSI 80/67 135 129 132 140 162


(23.89)85

(29.44)95

(35)105

(40.56)115

(46.11)

MPA 70/59 0.82 0.78 0.81 0.86 1.01

MPA 75/63 0.86 0.83 0.87 0.91 1.07

MPA 80/67 0.93 0.89 0.91 0.96 1.12

Fig. 46 - Cooling Chart


Pressure on Service Port (Cont)

Table 19—Heating Chart

°F (°C ) ODT/IDT57/53

(13.89/11.67)47/43

(8.33/6.11)37/33

(2.78/0.56)27/23

(-2.78/-5)17/13

(-8.33/-10.56)

BAR 55 30.3 28.5 25.3 22.8 20.8

BAR 65 32.5 30.0 26.6 25.4 23.3

BAR 75 33.8 31.5 27.8 26.3 24.9

°F (°C ) ODT/IDT57/53

(13.89/11.67)47/43

(8.33/6.11)37/33

(2.78/0.56)27/23

(-2.78/-5)17/13

(-8.33/-10.56)

PSI 55 439 413 367 330 302

PSI 65 471 435 386 368 339

PSI 75 489 457 403 381 362

°F (°C ) ODT/IDT57/53

(13.89/11.67)47/43

(8.33/6.11)37/33

(2.78/0.56)27/23

(-2.78/-5)17/13

(-8.33/-10.56)

MPA 55 3.03 2.85 2.53 2.28 2.08

MPA 65 3.25 3.00 2.66 2.54 2.33

MPA 75 3.38 3.15 2.78 2.63 2.49

Fig. 47 - Heating Chart


DISASSEMBLY INSTRUCTIONS SIZES 12K (115V)

1 Panel plate How to remove the panel plate.

1. Stop the air conditioner and turn “OFF” the power breaker.

2. Remove the big handle first, and then removethe top cover (3 screws).

3. Remove the front panelscrews (7).

4. Remove the right side panel screws (11).

2

4

3

3

Front panel screws (7)

Top panel screws (3), 1 screws is under the big handle

Big handle

(3 screws)


DISASSEMBLY INSTRUCTIONS SIZES 12K (115V) (CONT)

2 Fan assembly

How to remove the fan assembly.

1) Remove the nut securing the fan, and remove the fan.

2) After removing the top cover, release the hooks and open the electronic control box cover.

3) Disconnect the fan motor connector from the electronic control board.

2

3

Compressor

T3, T4, T5 sensor

Motor

Electronic expansion valve

4 way valve



5

4) Remove the fan motor screws (4) then remove the motor.


DISASSEMBLY INSTRUCTIONS SIZES 12K (115V) (CONT)3 Electrical

partsHow to remove the electrical parts.

1) After you complete the steps in item 1 and 2, remove the compressorconnector.

2) Pull out the two bluewires connected to the four way valve.

3) Pull out connectors ofthe condenser coil temp. sensor (T3),outdoor ambient temp. sensor (T4) and discharge temp. sensor(T5).

1

2

3



4) Disconnect theelectronic expansion valve wire from the control board.

5) Remove the ground wires.

6) Remove the wires(1,2,3).

7) Remove the electronic control box.

5

6



4 Four-way valve

How to remove the four-way valve.1) Perform the work of

sections 1 and 3.

2) Recover refrigerant from the refrigerant circuit.

3) Remove the coil screwthen remove the coil.

4) Detach the welded parts of the four-way valve and pipe.

5) Remove the four-way valve assembly.

The picture of four-way valve may be different from your actual valve.

5 Compressor How to remove the compressor.1) Complete the work of

sections1 and 3.

Recover the refrigerant from the refrigerant circuit.

2) Remove the discharge and suction pipes with a burner.

3) Remove the hex nutsand washers securingthe compressor on the bottom plate.

4) Lift the compressorfrom the base pan assembly.

2

3

3


DISASSEMBLY INSTRUCTIONS SIZES 9−12K (208−230V)

No. Part name Procedures Remarks

Panel plate How to remove the panel plate.

1) Stop the air conditioner

and turn “OFF” the

power breaker.

2) Remove the big handle

first, then remove the

top panel (3 screws).

3) Remove the front

panel screws (6).

4) Remove the right side

panel screws (8).

2

4

3

Top panel screws (3 screws, 1 screw is under the big handle)

Big

Handler screws (3)


1


DISASSEMBLY INSTRUCTIONS SIZES 9−12K (208−230V) (CONT)2 Fan

assemblyHow to remove the fan assembly.

1) After removing the

panel plate using

section 1, remove the

hex nut securing the

fan then remove the

fan.

2) Release the hooks

and open the

electronic control box

cover.

1

2

Compressor T3, T4, T5 sensor

Motor Electronic expansion valve

4 way valve


DISASSEMBLY INSTRUCTIONS SIZES 9−12K (208−230V) (CONT)

3) Disconnect the fan

motor connector and

from the electronic

control board.

4) Remove the fan motor

screws (4). Then

remove the fan motor.

3 Electrical parts

How to remove the electrical parts.1) After completing the

work in sections 1 and 2, remove thecompressor connectors.

2) Pull out the two bluewires connected with the four way valve.

1

3

3

4

2



3) Pull out connectors ofthe condenser coil temp. sensor(T3),outdoor ambient temp. sensor (T4) and discharge temp. sensor (T5).

4) Disconnect the

electronic expansion

valve wire.

5) Remove the

grounding screw.

6) Remove the wires (1,

2, 3). Then remove

the electronic control

box.

4

5 6



4 Four-way valve

How to remove the four-way valve.1) Complete the steps in

sections 1, 3.2) Recover refrigerant

from the refrigerant circuit.

3) Remove the coil screw then remove the coil.

4) Detach the welded parts of the four-way valve and pipe.

5) Remove the four-wayvalve assembly.

The picture of four-way valve may differ from your actual valve. 3 4

5 Compressor How to remove the compressor.1) Complete steps in

sections 1, 3.2) Recover refrigerant


3) Remove the4) discharge and suction

pipes with a burner.5) Remove the hex nuts

and washers securingthe compressor on the bottom plate.


2

3


DISASSEMBLY INSTRUCTIONS SIZES 18K (208−230V)


Panel plate How to remove the panel plate.

1) Stop the air conditioner and turn

OFF the power breaker.

2) Remove the top panelscrews (3).

3) Remove the front panel screws (9).

4) Remove the right side panel screws (8).

2

4

3

Top panel screws (3)


Big handle

screws (3)

1


DISASSEMBLY INSTRUCTIONS SIZES 18K (208−230V) (CONT)

2 Fan assembly


1) After removing the panel plate using section 1, remove the hex nut securing the fan then remove the fan.

2) After removing the top cover, release the hooks then open the electronic control box cover.

1

2

T3, T4, T5 sensor

Motor wire Electronic

expansion valve

Compressor wire

4 way valve wire Electric pipe heater and Crankcase

electric heater


DISASSEMBLY INSTRUCTIONS SIZES 18K (208−230V) (CONT)3) Disconnect the

connector for fan motor from the electronic control board.

4) Remove the fan motorscrews. Then remove the fan motor.

3 Electrical parts

How to remove the electrical parts.1) Complete the work of

items 1 and 2, then remove the compressor and reactor connectors.

1

3

4



2) Pull out the two bluewires connected to the four way valve.

3) Remove theconnectors of the condenser coil temp. sensor (T3),outdoor ambient temp. sensor(T4) and discharge temp. sensor (T5).

4) Disconnect the electronic expansion valve wire.

3

3

4

2



5) Remove the electric heaters.

6) Remove the grounding screw.

7) Remove the wires (1,2, 3 or L1, L2, S). Then remove the electronic control box.

5

7



4 Four-way valve


sections 1, 3. 2) Recover refrigerant


3) Remove the coil screw then remove the coil.

4) Detach the welded parts of four-way valve and pipe.

5) Remove the four-wayvalve assembly.

The picture of four-way valve may differ from youractual valve.

3

5 Compressor How to remove the compressor.1) After completing steps

in sections 1, 3,recover refrigerant from the refrigerant circuit.


3) Remove the hex nutsand washers securing the compressor on thebottom plate.


2

3


DISASSEMBLY INSTRUCTIONS SIZES 24K (208−230V)


1 Panel plate How to remove the panel plate.1) Stop the air

conditioner and turn “OFF” the power breaker.

2) Remove the big handle first, then remove the top cover(7 screws).

3) Remove the frontpanel screws (11).

4) Remove the right side panel screws (13).

2

4

3


Top panel screws (3), 1 screw is under the big handle)

Big handle screws (4)



2 Fan assembly


1) Remove the panelplate using the steps insection 1.

2) Remove the nut securing the fan, thenremove the fan.

3) Release the hooks and remove the screws.Open the electronic control box cover.

2

3

Fan Electronic control box

Compressor



4) Disconnect the fan motor connector from the electronic control board.

5) Remove the fan motor screws (4) of the fan motor, then remove the motor.

5

4

T3, T4, T5, sensor Pressure switch

Compressor

wire

Electronic expansion 4 way valve Motor wire

5


DISASSEMBLY INSTRUCTIONS SIZES 24K (208−230V) (CONT)3

partsElectrical

1)

How to remove the electrical parts.

2) Pull out the two blue

3)

After completing thework in sections 1 and2, remove thecompressor connector.

wires connected withthe four way valve.

1

2

3

Pull out connectors ofthe condenser coiltemp. sensor (T3),outdoor ambient temp.sensor (T4) anddischarge temp.sensor (T5).



4)

5)

Disconnect thepressure switchconnector.

6)

7)

Remove the groundwires.

Disconnect theelectronic expansionvalve wire from thecontrol board.

6

7

5

Remove the wires (1,2, 3 or L1, L2, S). Thenremove the electroniccontrol box.

4



4 Four-way valve


sections 1, 3.2) Recover the refrigerant


3) Remove the coil screw and then remove the coil.

4) Detach the welded parts of four-way valve and pipe.

5) Remove the four-way valve assembly.

The picture of four-way valve may differ from your actual valve.

5 Compressor How to remove the compressor.1) Complete steps in

sections 1, 3. Recover refrigerant from the refrigerant circuit.


3) Remove the hex nutsand washers securing the compressor to thebottom plate.


2

3 4


APPENDIX 1

Table 20—Temperature Sensor Resistance Value Table for T1, T2, T3, T4 (°C−−K)°C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm

-20 -4 115.266 20 68 12.6431 60 140 2.35774 100 212 0.62973

-19 -2 108.146 21 70 12.0561 61 142 2.27249 101 214 0.61148

-18 0 101.517 22 72 11.5 62 144 2.19073 102 216 0.59386

-17 1 96.3423 23 73 10.9731 63 145 2.11241 103 217 0.57683

-16 3 89.5865 24 75 10.4736 64 147 2.03732 104 219 0.56038

-15 5 84.219 25 77 10 65 149 1.96532 105 221 0.54448

-14 7 79.311 26 79 9.55074 66 151 1.89627 106 223 0.52912

-13 9 74.536 27 81 9.12445 67 153 1.83003 107 225 0.51426

-12 10 70.1698 28 82 8.71983 68 154 1.76647 108 226 0.49989

-11 12 66.0898 29 84 8.33566 69 156 1.70547 109 228 0.486

-10 14 62.2756 30 86 7.97078 70 158 1.64691 110 230 0.47256

-9 16 58.7079 31 88 7.62411 71 160 1.59068 111 232 0.45957

-8 18 56.3694 32 90 7.29464 72 162 1.53668 112 234 0.44699

-7 19 52.2438 33 91 6.98142 73 163 1.48481 113 235 0.43482

-6 21 49.3161 34 93 6.68355 74 165 1.43498 114 237 0.42304

-5 23 46.5725 35 95 6.40021 75 167 1.38703 115 239 0.41164

-4 25 44 36 97 6.13059 76 169 1.34105 116 241 0.4006

-3 27 41.5878 37 99 5.87359 77 171 1.29078 117 243 0.38991

-2 28 39.8239 38 100 5.62961 78 172 1.25423 118 244 0.37956

-1 30 37.1988 39 102 5.39689 79 174 1.2133 119 246 0.36954

0 32 35.2024 40 104 5.17519 80 176 1.17393 120 248 0.35982

1 34 33.3269 41 106 4.96392 81 178 1.13604 121 250 0.35042

2 36 31.5635 42 108 4.76253 82 180 1.09958 122 252 0.3413

3 37 29.9058 43 109 4.5705 83 181 1.06448 123 253 0.33246

4 39 28.3459 44 111 4.38736 84 183 1.03069 124 255 0.3239

5 41 26.8778 45 113 4.21263 85 185 0.99815 125 257 0.31559

6 43 25.4954 46 115 4.04589 86 187 0.96681 126 259 0.30754

7 45 24.1932 47 117 3.88673 87 189 0.93662 127 261 0.29974

8 46 22.5662 48 118 3.73476 88 190 0.90753 128 262 0.29216

9 48 21.8094 49 120 3.58962 89 192 0.8795 129 264 0.28482

10 50 20.7184 50 122 3.45097 90 194 0.85248 130 266 0.2777

11 52 19.6891 51 124 3.31847 91 196 0.82643 131 268 0.27078

12 54 18.7177 52 126 3.19183 92 198 0.80132 132 270 0.26408

13 55 17.8005 53 127 3.07075 93 199 0.77709 133 271 0.25757

14 57 16.9341 54 129 2.95896 94 201 0.75373 134 273 0.25125

15 59 16.1156 55 131 2.84421 95 203 0.73119 135 275 0.24512

16 61 15.3418 56 133 2.73823 96 205 0.70944 136 277 0.23916

17 63 14.6181 57 135 2.63682 97 207 0.68844 137 279 0.23338

18 64 13.918 58 136 2.53973 98 208 0.66818 138 280 0.22776

19 66 13.2631 59 138 2.44677 99 210 0.64862 139 282 0.22231


APPENDIX 2

Table 21—Temperature Sensor Resistance Value Table for T5 (°C−−K)°C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm

-20 -4 542.7 20 68 68.66 60 140 13.59 100 212 3.702

-19 -2 511.9 21 70 65.62 61 142 13.11 101 214 3.595

-18 0 483 22 72 62.73 62 144 12.65 102 216 3.492

-17 1 455.9 23 73 59.98 63 145 12.21 103 217 3.392

-16 3 430.5 24 75 57.37 64 147 11.79 104 219 3.296

-15 5 406.7 25 77 54.89 65 149 11.38 105 221 3.203

-14 7 384.3 26 79 52.53 66 151 10.99 106 223 3.113

-13 9 363.3 27 81 50.28 67 153 10.61 107 225 3.025

-12 10 343.6 28 82 48.14 68 154 10.25 108 226 2.941

-11 12 325.1 29 84 46.11 69 156 9.902 109 228 2.86

-10 14 307.7 30 86 44.17 70 158 9.569 110 230 2.781

-9 16 291.3 31 88 42.33 71 160 9.248 111 232 2.704

-8 18 275.9 32 90 40.57 72 162 8.94 112 234 2.63

-7 19 261.4 33 91 38.89 73 163 8.643 113 235 2.559

-6 21 247.8 34 93 37.3 74 165 8.358 114 237 2.489

-5 23 234.9 35 95 35.78 75 167 8.084 115 239 2.422

-4 25 222.8 36 97 34.32 76 169 7.82 116 241 2.357

-3 27 211.4 37 99 32.94 77 171 7.566 117 243 2.294

-2 28 200.7 38 100 31.62 78 172 7.321 118 244 2.233

-1 30 190.5 39 102 30.36 79 174 7.086 119 246 2.174

0 32 180.9 40 104 29.15 80 176 6.859 120 248 2.117

1 34 171.9 41 106 28 81 178 6.641 121 250 2.061

2 36 163.3 42 108 26.9 82 180 6.43 122 252 2.007

3 37 155.2 43 109 25.86 83 181 6.228 123 253 1.955

4 39 147.6 44 111 24.85 84 183 6.033 124 255 1.905

5 41 140.4 45 113 23.89 85 185 5.844 125 257 1.856

6 43 133.5 46 115 22.89 86 187 5.663 126 259 1.808

7 45 127.1 47 117 22.1 87 189 5.488 127 261 1.762

8 46 121 48 118 21.26 88 190 5.32 128 262 1.717

9 48 115.2 49 120 20.46 89 192 5.157 129 264 1.674

10 50 109.8 50 122 19.69 90 194 5 130 266 1.632

11 52 104.6 51 124 18.96 91 196 4.849

12 54 99.69 52 126 18.26 92 198 4.703

13 55 95.05 53 127 17.58 93 199 4.562

14 57 90.66 54 129 16.94 94 201 4.426

15 59 86.49 55 131 16.32 95 203 4.294

16 61 82.54 56 133 15.73 96 205 4.167

17 63 78.79 57 135 15.16 97 207 4.045

18 64 75.24 58 136 14.62 98 208 3.927

19 66 71.86 59 138 14.09 99 210 3.812


APPENDIX 3

Table 22—ΔT(°F)=9ΔT(°C)/5°C °F °C °F °C °F °C °F °C °F

-5 23 21 69.8 51 123.8 82 179.6 113 235.4

-4 24.8 22 71.6 52 125.6 83 181.4 114 237.2

-3 26.6 23 73.4 53 127.4 84 183.2 115 239

-2 28.4 24 75.2 54 129.2 85 185 116 240.8

-1 30.2 25 77 55 131 86 186.8 117 242.6

0 32 25.5 77.9 56 132.8 87 188.6 118 244.4

0.5 32.9 26 78.8 57 134.6 88 190.4 119 246.2

1 33.8 27 80.6 58 136.4 89 192.2 120 248

1.5 34.7 28 82.4 59 138.2 90 194 121 249.8

2 35.6 29 84.2 60 140 91 195.8 122 251.6

2.5 36.5 30 86 61 141.8 92 197.6 123 253.4

3 37.4 31 87.8 62 143.6 93 199.4 124 255.2

3.5 38.3 32 89.6 63 145.4 94 201.2 125 257

4 39.2 33 91.4 64 147.2 95 203 126 258.8

4.5 40.1 34 93.2 65 149 96 204.8 127 260.6

5 41 35 95 66 150.8 97 206.6 128 262.4

6 42.8 36 96.8 67 152.6 98 208.4 129 264.2

7 44.6 37 98.6 68 154.4 99 210.2 130 266

8 46.4 38 100.4 69 156.2 100 212 131 267.8

9 48.2 39 102.2 70 158 101 213.8 132 269.6

10 50 40 104 71 159.8 102 215.6 133 271.4

11 51.8 41 105.8 72 161.6 103 217.4 134 273.2

12 53.6 42 107.6 73 163.4 104 219.2 135 275

13 55.4 43 109.4 74 165.2 105 221 136 276.8

14 57.2 44 111.2 75 167 106 222.8 137 278.6

15 59 45 113 76 168.8 107 224.6 138 280.4

16 60.8 46 114.8 77 170.6 108 226.4 139 282.2

17 62.6 47 116.6 78 172.4 109 228.2 140 284

18 64.4 48 118.4 79 174.2 110 230 141 285.8

19 66.2 49 120.2 80 176 111 231.8 142 287.6

20 68 50 122 81 177.8 112 233.6 143 289.4

Copyright 2018CMNA 1025 Cobb Place Blvd NW, Kennesaw, GA 30152

DLCERA · Specifications subject to change without notice. DLCERA SERVICE MANUAL Outdoor Unit...

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