1 Functions 2 2 Product Specifications 4 3 Dimensions 5 4 Refrigeration Cycle Diagram 6 5 Block Diagram 6 6 Wiring Diagram 7 7 Air Conditioner Performance Evaluation 7 8 Troubleshooting Guide 8 9 Operation Details 10 10 Operating Instructions 13

© 2002 Matsushita Industrial Corp. Sdn. Bhd.(11969-T). All rights reserved. Unauthorized copyingand distribution is a violation of law.

CW-XC90JH

11 Installation Instructions 18 12 Care and Maintenance 21 13 Servicing Information 22 14 Technical Data 24 15 Electronic Circuit / Main 25 16 Electronic Circuit / Indicator Complete 25 17 Electronic Circuit Diagram 26 18 Exploded View 29 19 Replacement Part List 30

Room Air Conditioner

CONTENTS Page Page

Order No. MAC0210052C3

1 Functions1.1. Remote Control

2

1.2. Main Unit

3

2 Product SpecificationsUnit CW-XC90JH

Phase Ø SingleVoltage V 220 ~ 240Frequency Hz 50Cooling Capacity kW

Btu/h2.64 ~ 2.67

9000 ~ 9100Running Current A 4.4 ~ 4.3Input Power W 935 ~ 975EER Btu/hW 9.6 ~ 9.3Starting Current A 16.9Compressor Output W 750Fan Motor Output W 58Noise Level Indoor

(High / Low)db(A) 47 / 43 ~ 49 / 45

Outdoor(High / Low)

db(A) 57 / 53 ~ 58 / 54

Moisture Removal L/hPt/h

1.63.4

Air Circulation Indoor m3/min (ft3/min) 7.2 (254)Outdoor m3/min (ft3/min) 11.1 (392)

Dimensions Height mminches

346(13-5/8)

Width mminches

450(17-23/32)

Depth mminches

580(22-27/32)

Net Weight kglb

2964

Gross Weight kglb

3168

Refrigerant (R-22) goz

49017.3

• Specifications are subject to change without notice for further improvement.

4

3 Dimensions3.1. Top View, Front View and Side View

3.2. UnitItem Unit: Inch (mm)

A - Width 17-23/32” (450)B - Height 13-10/16” (346)C - Depth 22-27/32” (580)

D 11-9/16” (293)E 1-15/32” (37)F 10-14/16” (276)G 11-9/16” (293)

5

4 Refrigeration Cycle Diagram

Item Pressure (MPa) Temperature (°C)A 2.04 ~ 2.24 68 ~ 82B 1.87 ~ 2.07 35 ~ 45C 0.54 ~ 0.60 7 ~ 13D 0.51 ~ 0.57 8 ~ 16

Note: Indoor temperature at 27°C (DB), 19°C (WB) and Outdoor at 35°C (DB), 24°C (WB) for Cooling.

5 Block Diagram

6

6 Wiring Diagram

6.1. Resistance of Fan Motorwindings and the ratedCapacitor

Model CW-XC90JHConnection CWA921156Blue - Yellow 93.8 ΩYellow - Orange 58.7 ΩBrown - Yellow 13.0 ΩRed - Yellow 143.0 Ω

6.2. Resistance of Compressorwindings and the ratedCapacitor

Model CW-XC90JHConnection CWB092141C-R 3.597 ΩC-S 4.868 ΩCapacitor CWA312075

(25µF, 370VAC)

Note: Resistance at 20°C of Ambient Temperature.

7 Air Conditioner Performance EvaluationSuction & Discharge AirTemperature Difference

Current Determination Remedy

• 8°C and over (14.4°F) • As specified. • Nothing wrong. • None. • 8°C and over (14.4°F) • Higher than specified. • Nothing wrong, outdoor

temperature is too high, heatradiation is not efficient.

• Improve heat radiation.

• Under 8°C (14.4°F) • Higher than specified. • Something is preventing heatradiation.

• Excessive amount of refrigerant.

• Improve heat radiation. • Under 8°C (14.4°F) • Lower than specified. • Leakage of refrigerant or

refrigerant system is blocked. • Locate and repair leak.

• Flush refrigeration cycle. • Under 8°C (14.4°F) • Higher than specified by

50%. • Compressor defect. • Replace the compressor.

Note: Room air humidity is relatively higher, the temperature difference will be smaller.

7

8 Troubleshooting GuideWarning: Disconnect unit from electrical power supply before making any electrical checks.

Trouble Check Result Causes RemedyFan Motor and Compressorwon’t run.

• Supply Voltage

• Fuse Box or Circuit

Breaker.

• Power cord or Wiring

Harness.

• Temperature Setting.

• Less than 10% by

Rated.

• Open Contacts.

• Pulled loose or Shorted.

• Higher than room

temperature

• Temporary or

Permanent?

• Customer Restarted

unit immediately without

waiting 3 minutes.

• Consult ELECTRICIAN,

if permanent.

• WAIT FOR 3

MINUTES.

• Repair Open Circuit.

• Repair or Replace it.

• Set it LOWER.

Fan motor won’t run(Compressor run).

• Objects around Fan.

• RESISTANCE between

Wires.

• Capacitor Fan Motor.

• Locked Fan.

• Shorted / Open circuit.

• OHM Meter doesn’tDeflect.

• Fan Hitting Cowling.

• Foreign Materials.

• Frozen Bearings.

• Shorted or Burned out.

• Capacitor Defect.

• Adjust Fan position

setting screw.

• Remove Foreign

Materials.

• Replace Fan Motor.

• Replace Fan Motor.

• Replace Capacitor Fan.

Compressor won’t run (Fanrun).

• Temperature setting.

• RESISTANCE between

Terminal and the

Compressor Body.

• RESISTANCE between

Terminals.

• Overload Protector.

• Capacitor Compressor.

• Thermostat.

• Higher than room temp.

• Shorted.

• Shorted.

• Infinity between

Terminals.

• OHM Meter doesn’t

deflect.

• No click heard.

• Winding Coil touched to

the compressor shell.

• Rear Shorted or Burnt

out.

• Rear Shorted or Burnt

out.

• Overload Protector

defect.

• Capacitor defect.

• Thermostat defect.

• Set it lower.

• Replace Compressor.

• Replace Compressor.

• Replace Overload

Protector.

• Replace Capacitor

Compressor.

• Replace Thermostat.Air Swing won’t run • Air Swing Switch. • OFF position. • Set it ON.

• No contact at position. • Open circuit • Replace Air Swing

Switch. • Resistance between

wires.

• OHM Meter doesn’t

deflect.

• Shorted or open circuit. • Replace Air SwingMotor.

8

Trouble Check Result Causes RemedyInsufficient cooling. • Temperature Setting.

• Ventilation door open.

• Air filter dirty.

• Location of installation.

• Evaporator/Condenser

Coil obstructed.

• Unit capacity for the

room too small.

• Temperature difference

and running current.

• Higher than room

temperature.

• Open.

• Clogged or dirty.

• Sunlight hitting outdoor

side.

• Obstacles.

• Clogged or dirty.

• Not satisfied.

• REFER TO

PERFORMANCE

EVALUATION.

• Reduces capacity.

• Restricted air

circulation.

• Restricted Heat

Exchanger.

• Restricted Heat

Exchanger.

• Restricted air

circulation.

• Leakage of refrigerant

or refrigeration system

is blocked.

• Set it lower.

• Close ventilation door.

• Clean or replace Air

Filter.

• Consider building an

AWNING.

• Remove obstacles or

reinstall unit.

• Clean the coils.

• Replace the unit with

bigger one.

• Locate repair leak.

• Flush refrigeration

cycle.Noise • Source of Noise • Vibration.

• Intermittent Noise.

• Faulty installation.

• Fan hitting objects.

• Refrigerant tubing

touching each other.

• Fan splashing Drain

Water.

• Reinstall unit or

Reinforce the

installation.

• Adjust Fan position or

remove foreign

materials.

• About 1/2” Clearance

needed.

• Remove drain plug and

mount a drain pan to

remove the water.

• Set the Drain outlet

downward, so that the

Drain water can run off.Water dripping inside room. • Unit installation.

• Drain Tray-Styrofoam

pieces blocking drain

channel.

• Tilted to inside room.

• Clogged.

• Restricted run off.

• Clogged or blocked.

• Tilt unit to outside

slightly.

• Remove the foreign

materials.

Frozen Evaporator • Temperature setting.

• Air Filter/Evaporator.

• Temperature difference

and running current.

• Set too low for ambient

conditions.

• Clogged or Dirty.

• REFER TO

PERFORMANCE

EVALUATION

• Outdoor temperature

low (Night time).

• Restricted air

circulation.

• Leakage of refrigerant

or refrigeration system

is blocked.

• Set the Main Control

knob to Fan to melt ice

and set the

Temperature Control to

higher temperature.

• Clean Air

filter/Evaporator.

• Locate and repair leak.

• Flush refrigeration

cycle.

9

9 Operation Details9.1. Fan Mode Operation • Fan operation only. Fan in operation according to Remote Control or Main Unit (Touch Control Panel) setting.

9.1.1. Manual Setting of Fan Speed • Basic Fan Speed can be manually adjusted (Lo or Hi) by using the Fan Speed Selection Button/Pad at Remote Control or Main

Unit (Touch Control Panel).

9.2. Cooling Mode Operation • Cooling in operation according to Remote Control or Main Unit (Touch Control Panel) setting.

9.2.1. Time Delay Safety Control (3 minute) • When the compressor is stopped by Operation Switch at the Remote Control or Main Unit (Touch Control Panel), it restart after

3 minutes when the Operation Switch at the Remote Control or Main Unit (Touch Control Panel) is turned ON. • When the setting temperature is reached during cooling operation, the compressor stops and it will not start for 3 minutes. • Protection of compressor to balance the pressure in the refrigeration cycle for 3 minutes.

9.2.2. 7 minutes Time Saved Control • The compressor will start automatically if it has stopped for 7 minutes even if the room temperature is between the compressor

ON temperature and OFF temperature.

9.2.3. Starting Current Control • When the compressor and fan motor are simultaneously started, the fan motor will operate 1.6 seconds later.

9.2.4. Freeze Prevention ControlIf the temperature of the indoor heat exchanger fallscontinuously below 10°C for 3 minutes or more, thecompressor turns off to protect the heat exchanger fromfreezing. The fan speed setting remains the same.Compressor restarts when the heat exchanger temperaturerises to 12°C (Recovery).

*3 minutes waiting of Time Delay Safety Control is valid forCooling Operation.

9.2.5. Compressor Reverse Rotation Protection Control • If the compressor is operating continuously for 5 minutes or longer and the temperature difference between intake air and heat

exchanger is 2.5°C or less for 2 minutes, compressor will stop and restart automatically (Time Delay Safety Control is valid).

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9.2.6. Cooling Operation Time Diagram

9.3. Powerful Operation • Purpose of this operation is to obtain the setting temperature quickly. • When the Powerful is set during Cooling Operation, the set temperature will be automatically decreased 3°C against the present

setting temperature (Lowest limit temperature: 16°C). • This operation automatically will be running under Super High Fan Speed. • Sound emitted by the unit will be increased during Powerful operation due to increased of air volume. • Powerful will operate for 15 minutes only, after that it will shift back to previous operation mode. • Powerful will stop if:-

− Powerful button/Pad is pressed again. − Powerful operation has run for 15 minutes. − Stopped by ON/OFF switch. − Timer OFF activates.

9.4. Random Auto Restart Control • If there is a power failure, operation will be automatically restarted after 3 to 4 minutes when the power is resumed.

It will start with previous operation mode and airflow direction (Time Delay Safety Control is valid) as the operation was notstopped by Remote Control or Main Unit (Touch Control Panel).

• Restart time is decided randomly with 5 parameters:- − Intake air temperature. − Setting temperature. − Fan speed. − Air Swing blade position. − Indoor heat exchanger temperature.

• Auto Restart Control is not available when Timer is set. • If Powerful operation is set during power failure, Powerful operation will not start automatically along with previous operation

mode after power resume. • This control can be omitted by open the circuit JX1.

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9.5. Fan Speed Control • Manual Fan Speed Control

Basic fan speed adjustment (2 setting, from Lo to Hi) can be carried out by using the Fan Speed Selection Button/Pad at theRemote Control or Main Unit (Touch Control Panel).

9.6. Airflow Direction Control9.6.1. Horizontal Airflow Direction

When Air Swing Button/Pad is pressed with Remote Controlor Main Unit (Touch Control Panel) in the Auto Airflow, theairflow direction louver swings side to side within the full swingrange as shown in the “Diagram”.The louver can be adjusted by pressing the Button/Pad againat the Remote Control or Main Unit (Touch Control Panel) tothe desired louver position.When stopped with Remote Control or Main Unit (TouchControl Panel), the louver vane is reset, and stopped at theclosing position.

“Diagram”

9.6.2. Vertical Airflow Direction • The upward and downward airflow direction vane can be adjusted manually by hand.

9.7. Remote Control Signal Receiving Sound • To switch off the beep sound.

Press the “Operation OFF/ON Pad” at the main unit continuously for 10 second or more.Repeat the above if you want to switch ON the “beep” sound.*However, if the “Operation OFF/ON Pad” have been pressed, the previous operation mode will be activated. If you do notrequire this operation, you may change it by using the Main Unit (Touch Control Panel).

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10.1. Parts Identification

10.1.1.1. Vertical Airflow Direction VaneAirflow direction adjustment up-down. • The vertical airflow direction vane is

controlled by rotating the horizontalvane forward or backward.

NOTEVertical adjustment of the airflow directionis done manually.

10.1.1.2. Ventilation LeverThe ventilation lever must be in CLOSEposition in order to maintain the best coolingconditions.When fresh air is necessary in the room, setthe ventilation lever to the OPEN position.The damper is opened and room air is drawnout.

10 Operating Instructions

10.1.1. Main Unit

10.1.1.3. Touch Control Panel

10.1.1.4. Types of Signal Sound • One long “Beep” and one short “Beep”. (Sound from the main unit.)

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Ensure that the power plug issecurely inserted.

• A loose plug may cause a fireor an electric shock.

NOTES • If the unit is not going to be used for an extended period of

time, remove the power plug. Otherwise, approximately2.5W of electricity will be used even if the unit has beenturned off using the remote control.

• If operation is stopped, and to be restarted immediately, theunit will resume operation only after 3 minutes.

10.2.1. How to Insert Batteries(1) Open the cover.

(2) Insert the two batteries.

(3) Close the cover.

* Maximum distance: 10 m

Be sure to observe the following: • Aim remote control at the

control panel on airconditioner when operating.

• Do not drop or throw theremote control.

• Do not place the remotecontrol in a location that isexposed to direct sunlight ornext to a heating unit or otherheat sources.

10.2.2. About the Batteries • The batteries can be used for approximately one year. • Be sure to replace the batteries with two new identical

batteries. • Remove the batteries if the air conditioner will not be used

for an extended period of time.

10.2.3. Operation ConditionsUse the air conditioner under the following conditions: • Operating temperature range.

Indoor side Outdoor sideD.B.T. W.B.T. D.B.T. W.B.T.

MaximumTemperature

32°C 23°C 43°C 26°C

MinimumTemperature

16°C 11°C 16°C 11°C

D.B.T.: Dry Bulb Temperature

W.B.T.: Wet Bulb Temperature

NOTE: Humidity may exceed 90%. • Continuous operation at over 90% high humidity may create

condensation and result in water drops on the intake andoutlet vanes.

10.1.2. Remote Control

10.2. Preparation Before Operating

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10.3. Air Conditioner Operation10.3.1. Operating the Unit

Touch Control Panel Remote Control DisplayStart operation by pressing OPERATION. • Operation will turn on and the display panel will light up.

To stop the operation, press the OPERATION again. • The unit will stop operating and the display panel light will

turn off.

10.3.2. Setting Display TemperatureTouch Control Panel Remote Control Display

Display willchange

according tothe setting.

Press TEMP/TIMER “Upward” or “Downward” to set thedisplay temperature. • The temperature can be set between 16°C and 30°C.

Recommended temperature: 26°C ~ 28°C.

NOTES • The latest temperature setting will be memorized and will

appear on the display the next time it’s turned on.

• The display temperature selection is for display purposeonly and does not indicate actual room settingtemperatures. Your room temperature may not necessarilymatch the displayed temperature.

10.3.3. Selecting Operation ModeTouch Control Panel Remote Control Indicator

Press MODE to select the desired operation. • The indicator will light up and a “beep” sound will indicate

changing setting.

COOL modeTo set display temperature to your preference of coolingcomfort.

FAN modeTo provide air circulation without cooling the room.During Fan operation, temperature setting cannot beselected.

10.3.4. Selecting Fan SpeedTouch Control Panel Remote Control Indicator

Press FAN SPEED to choose the speed level of the fan. • The indicator will light up and a “beep” sound will indicate

changing setting.

NOTEThe latest fan speed setting will be memorized and the indicatorwill light up the next time the unit is turned on.

10.3.5. Adjusting Horizontal Airflow DirectionTouch Control Panel Remote Control Indicator

No indication will appear. Press to select AIR SWING. • The air circulation will automatically move the horizontal

louvres left and right for better air distribution around theroom.

NOTEUsing your hands to adjust the direction may cause the louvresto malfunction. If this happens, stop operation immediately andrestart.

15

10.3.6. Powerful OperationTouch Control Panel Remote Control Display

To obtain set temperature quickly: • Press POWERFUL.

• To cancel this operation, press once more.

• After POWERFUL is selected, the operation will go on for15 minutes, after that it will shift back to previous operationmode.

• When the POWERFUL is set during Cooling Operation, theset temperature will be automatically decreased 3°Cagainst the present setting temperature (lowest limit 16°C).

NOTESound emitted by the unit will be increased during POWERFULoperation due to increased of air volume.

10.3.7. Setting The Off TimerTouch Control Panel Remote Control Display

When the air conditioner in operation:Press the TIMER button. • The SET/CANCEL indicator light will blink awaiting for

setting.

Press the TEMP/TIMER “Upward” or “Downward” buttonuntil the preferred hour of operation is reached.

Press the SET/CANCEL button to complete the setting. At thistime, the SET/CANCEL indicator light is steady instead ofblinking.NOTEThe hour reading will change back to the set temperaturereading after 10 seconds (You can also revert to temperaturesetting immediately by pressing the TEMP/TIMER “Upward” or“Downward” buttons again).

10.3.8. Check Timer Setting During Off TimerTouch Control Panel Remote Control Display

Press the TIMER button to check the remaining programmedtimer setting. • The figure will be displayed for 10 seconds then will

automatically switch back to temperature setting.

NOTEThe timer figure will change according to the time remaining (ifyou set it to turn off 3 hours from now, the timer will show “2”when you check the timer an hour later).

10.3.9. Cancel Timer Setting During Off TimerTouch Control Panel Remote Control Display

Press the SET/CANCEL button to cancel the timer setting. • The SET/CANCEL indicator light will turn off.

However the temperature remains displayed.

16

10.3.10. Setting The On TimerTouch Control Panel Remote Control Display

Press the TIMER button. • The TIMER indicator light will blink awaiting for setting.

Press the TEMP/TIMER “Upward” or “Downward” buttonuntil the preferred hour of operation is reached.

Press the SET/CANCEL button to complete the setting. At thistime, the TIMER indicator light is steady instead of blinking.NOTEThe display will show the remaining hour to the start of theoperation (if you set to turn on 3 hours from now, the timer willshow “2” at an hour later). When set time is reached, the airconditioner starts the operation under the previous settingmode and the TIMER indicator will light off. Now, the previousset mode and the fan speed will light up. Simultaneously, thedisplay will show the setting temperature.

10.3.11. Check Temperature / Mode / Fan Speed Setting During On TimerTouch Control Panel Remote Control Display

Press the TIMER button. The TIMER indicator light will blinkand the previous temperature setting will be shown.Simultaneously, MODE and FAN SPEED indicator will light up.This indication will last for 5 seconds, and then the display willshow the remaining time. MODE and FAN SPEED indicatorlight will turn off. At this time, the TIMER indicator light is steadyinstead of blinking.

10.3.12. Change Temperature/Mode/Fan Speed Setting During On TimerTouch Control Panel Remote Control Display

Press the SET/CANCEL button to cancel the timer setting.

Press the OPERATION. Set the desired mode and the fanspeed.Then press OPERATION button to stop operation.

Start the TIMER setting again by repeating the step from the“Setting The On Timer” procedures.

10.3.13. Cancel Timer Setting During On TimerTouch Control Panel Remote Control Display

Press the SET/CANCEL button to cancel the timer setting. TheSET/CANCEL indicator light will turn off.To operate the air conditioner before reaching the set timer: • Press the SET/CANCEL to cancel the timer.

• Press the OPERATION button to turn on the unit.

17

1. Remove the rear cabinet screws and chassis lockingbracket from the cabinet. Save for later use.

2. Slide the chassis out from the cabinet.

3. Place cabinet into the installation hole.

11 Installation Instructions11.1. Choosing the Installation Location • When installing, use the nearest power outlet. Make sure the power outlet is easy to reach so you can quickly disconnect your

air conditioner in case of emergency. • Ensure that the air conditioner is well supported, securely fastened, easily reachable and not obstructed. • Avoid locations with: salty or sulphurous air, draughts, dampness and flammable gas. • If you install the drainage system, be sure to channel the condensed water to a suitable location. • Covers, obstructions and unsteady support may cause excessive operating noise and vibration. • The rear end of the air conditioner is splash proof. You need not shield or cover it.

11.2. Preparation Before Installation11.2.1. Dimension • There should not be any obstacles surrounding the unit. • Prepare an installation hole slightly bigger than the cabinet size. • Left and right sides of the unit should be at least 15 cm away from the wall.

11.3. Installation Procedures

18

4. Slide the chassis into the cabinet. 5. Reinstall the cabinet screws.

Secure the cabinet to chassis by using screws (from rearcabinet). Lock the chassis to the cabinet reusing thechassis locking bracket and screw.

Depending upon the location of the AC outlet, route the ACcord to either the left or right side while installing the frontgrille.

6. Attach the front grille to the cabinet and fasten it with screw.

7. Attach the air filter to the front grille.

8. Slide the front grille slightly to the right to reattach the tabsand then push it down to close tight.

11.4. Removal of Front Grille 1. Remove the front intake grille.

Pull up the front intake grille about 90° and slide it slightly tothe left to unhook the tabs.

CAUTIONDo not raise the front intake grille any higher than 90° to theunit or damage to the tabs may occur.

2. Remove the air filter.Tilt up and pull out the Air Filter by the holder.

19

3. Remove the front grille. a. At the bottom right side of the front grille, press inward

on the cabinet near the power cord, and pull the grilleoutward to the right until right tab releases.

b. At the bottom left side, push inward on the cabinet andpull the grille outward to the left to release the left tab.Do not pull the bottom edge toward you more than 3inches to prevent two top tabs from damage.

c. Slide the Front Grille upwards to free the top two tabsfrom slots at the top of the cabinet.

11.5. Remove the Air FilterProcedures

1. Pull and lift up the front intake grille at 45° until it issupported by the stopper.

2. Tilt up and pull out the air filter by the holder.

11.6. Electric Work • Always use at the rated voltage and with a specific air

conditioning circuit. • Some installation locations may require the installation of a

short-circuit breaker. • A 16 Ampere time delay fuse or circuit breaker is required. • Nominal cross sectional area of power supply wire must be

3 core x 1.5 mm2 or above. • The power supply must be from an independent circuit. • All electrical installations must be made in accordance with

local wiring and safety regulations wherever applicable. • There must be a double pole switch with a minimum of 3

mm contact gap in the fixed installation circuit. • Please engage an authorized dealer or specialist for the

installation work.

11.7. Condensed Water DrainageThis air conditioner employs a “Slinger-Up System” which isdesigned to splash the condensed water on the condenser coilfor maximum cooling efficiency, thus producing a splashingsound. If the splashing sound annoys you, you can provide anoutside drainage by using the following procedure which may,however, cause a small loss of performance.Note:If the unit is installed at coastal area, drainage of condensedwater is recommended to prevent the condenser beingcorroded easily. 1. Remove the rubber plug and slide the chassis out from the

cabinet.

2. Install the drain pan.

Install the drain pan at the right corner of the cabinet using2 screws.

3. Connect a drain hose. Fit the drain hose to the drain pan.

NOTEDrain hose or tubing can be purchased locally to satisfyyour particular needs.

20

4. Slide the chassis back into the cabinet. Reinstall the cabinetto the chassis by using screws.

11.8. Noise Consideration • Select an installation location that can support the weight of

the air conditioner and one that will not cause increasedoperating noise and vibration.

• Ensure that airflow and noise from the rear side of the unit(outdoor) when installed do not disturb neighboringresidents.

• Obstacles placed in front of the air outlet on the rear side ofthe unit (outdoor), or covers placed over it will causeexcessive noise and deterioration in performance.

11.9. Transferring • Repositioning or transfer of the air conditioner due to

renovation or moving requires an additional service charge.Please consult your dealer before moving.

12 Care and MaintenanceCaution:

Always turn off the air conditioner and the main power supply before unplugging the power cord to clean the unit.Switch off the power supply if the unit is not going to be used for a long period of time. • Clean the cabinet, front grille with a mild soap or detergent and lukewarm water. • The front intake grille can be easily removed for cleaning purposes (refer Removal of Front Grille procedures). Gently wash

it with water and a sponge. • The filter can be easily cleaned using a vacuum cleaner. Vacuum the front of the filter and then wash the rear with water. If it

is badly soiled, wash with a mild household detergent. • Do not clean with benzene, thinner, scouring powder or cloth soaked in caustic chemicals. • If the unit is extremely dirty, heat transfer is less efficient and the unit may not cool effectively. Contact Shun Hing Electric

Service Centre Ltd. for an annual check. (Annual check is not covered under warranty) • If the air filter becomes clogged with dust, the cooling capacity will drop, and 6% of the electricity used to operate the air

conditioner will be wasted.NOTEDo not dry the front panel or the air filter in direct sunlight. (Exposure to direct sunlight may discolour or deform the panel.)

21

1. Remove the screws in front and both sides of the chassisas indicated (1), (2) and (3).

2. Release the tabs at both sides of the front grille (push in thecabinet and pull out the grille).Then, pull up the grille as torelease another two tabs at the top side of the grille.

3. Release the temperature sensor from its holder (1) and pullout the wire from the bushing at the cabinet (2).

4. Pull out the unit from cabinet by holding the hand grip at thebase pan. Remove two screws in front of the control board(1) & (2). Then, remove screw at the side of control board(3) and take out the control board side plate.

5. Hold the horizontal vane and pull it out from the top sideand get it out from its position.

6. Then, remove the shaft at the bottom of the compartment.

13 Servicing Information13.1. Control Board Removal Procedure

22

7. Pull out the control board as shown in figure. Then removethe screw as indicated (1).

8. Release a hook as shown in figure (1) to open up thecontrol board.

• Control Board part location.

23

14.1. Thermostat Characteristics • Mechanical Thermostat (Cooling).

14.2. Operation Characteristics • Cooling Characteristics Vs. Outdoor Temperature.

14 Technical Data

24

15 Electronic Circuit / Main

16 Electronic Circuit / Indicator Complete

25

17 Electronic Circuit Diagram17.1. Electronic Circuit Diagram (Main Unit)

26

27

Before using the circuit diagram, read the following carefully.

Intake airtemperature

Temperaturesetting

Discharge airtemperature

Pipetemperature

Cooling 27°C 16°C 17°C 15°C

• Indications for resistance − a. K...KΩ

b. W...WATTc. M...MΩ

d. Not indicated...1/4W − Type

Not indicated Carbon resistorTolerance (+-) 5%Metal oxide resistorTolerance (+-) 1%

• Indications for capacitor

Unit − µ...µF

− P...pFType − Not indicated...ceramic capacitor

− (S)...S series aluminium electrolytic capacitor

− (Z)...Z series aluminium electrolytic capacitor

− (SU)...SU series aluminium electrolytic capacitor

− (K)...K series aluminium electrolytic capacitor

− (P)...P series polyester system

− (SXE)...SXE series aluminium electrolytic capacitor

− (SRA)...SRA series aluminium electrolytic capacitor

− (KME)...KME series aluminium electrolytic capacitor

• Diode without indication...MA165 • Circuit Diagram is subject to change without notice for

further development.

17.2. Electronic Circuit Diagram (Remote Control)

17.3. How to use electronic circuit diagram

• Voltage measurementVoltage has been measured with a digital tester when the fan is set at high fan speed under the following conditions withoutsetting the timer.Use them for servicing.Voltage indication is in red.

17.4. Timer TableName Time Test Mode (Shortened CN-TEST pin) RemarksHour Timer 1 hr.

10 min.1 min.

1 min.10 sec.1 sec.

Time delay Safety Control 2 min. 58 sec. 0 sec.Forced Operation 60 sec. 0 sec.Time Save Control 7 min. 42 sec.Freeze Prevention Control 3 min. 0 sec.Compressor Reverse Rotation Detection 2 min. 0 sec.Starting Current Control 1.6 sec. 0 sec.Powerful Operation 15 min. 15 sec.Random Auto Restart Control 0 ~ 62 sec. 0 ~ 6.2 sec. Add value to Time Delay Safety Control.

28

18 Exploded View

(Note) • The above exploded view is for the purpose of parts disassembly and replacement. • The non-numbered parts are not kept as standard service parts.

29

19 Replacement Part ListRef. No. Part Name & Description Qty. CW-XC90JH Remarks

100 Base Pan Assembly 1 CWD52K1058AL

101 Bulkhead Assembly 1 CWD531012L

102 Air Guide - Propeller Fan 1 CWD311018L

103 Bracket - Fan Motor 1 CWD541042L

104 Particular Piece - Stopper 1 CWD932251L

105 Self Tapping Screw 1 XTT4+8JL

113 Ventilation Lever 1 CWH221006L

117 Vane - Air Swing 1 CWE241117L

121 Propeller Fan 1 CWH001013L

122 Nut - Propeller Fan 1 CWH56032L

124 Holder - Capacitor (Compressor) 1 CWH301009L

125 Control Board complete 1 CWH14C3374L

125-A Control Board (Main) 1 CWH102177L

126 Control Board (Front) 11

CWH102178LCWH102177L

127 Plain Washer 1 CWXWE6L

128 Holder - Sensor 1 CWH321008L

129 Drain Plug - Base Pan 1 CWH4611062L

135 Air Guider - Blower Wheel 1 CWD32C1021L

140 Turbo Fan 1 CWH031004L

141 Nut - Turbo Fan 1 CWH56053

142 Plain Washer 1 CWXWH6F16L

200 Compressor 1 CWB092141KG3AF100-100

0

201 Bushing - Compressor Mount 3 CWH50072

202 Nut - Compressor Mount 3 CWH4582065L

203 Packing - Terminal Cover 1 CWB811008

204 Holder - Overload Protector 1 CWH7041200L

205 Terminal Cover - Compressor 1 CWH7070221U

207 Nut - Terminal Cover 1 CWH7080300

208 Packing 1 CWB811009

210 Fin & Tube Condenser complete 1 CWB32C1245L

211 Strainer 1 CWB11101

212 Capillary Tube 1 CWB152203

220 Fin & Tube Evaporator complete 1 CWB30C1247L

300 Fan Motor111

CWA921156CWA921157CWA921176

301 Auto Circuit Breaker 11

CWA121064+MCWA121067+M

303 Capacitor - Compressor 11

CWA312075DS371256CPNA

0

308 Sensor Complete 1 CWA50C2113CWA50C2096

309 Control Board Cover 1 CWH31125L

311 Power Supply Cord 1 CWA20C2268

312 Air Swing Motor 1 CWA981079

328 Electronic Controller (Main) 1 CWA742886-WN

329 Electronic Controller (Indicator) 1 CWA742060-WN

330 Remote Control Complete 1 CWA75C2230

500 Front Grille Complete 1 CWE11C2076L

501 Air Filter 11

CWD001081LCWE312290L

502 Particular Piece-Front Cover 11

CWE141058LCWD932236L

503 Intake Grille 1 CWE221074L

505 Vane 1 CWE241118L

510 Front Grille 1 CWE101020L

600 Cabinet Complete 1 CWE00C1079L

601 Bushing 2 CWH51071D

610 Drain Pan 1 CWH401012L-E

612 Particular Plate 1 CWD911289L

613 Self Tapping Screw 4 XTT4-12CL

702 Screw - Bracket Fan Motor 4 XTT4+8JL

707 Screw - Front Grille Mount (Center) 1 CWH551069A

710 Screw - Drain Pan 1 XTT4D8CL

715 Operating Instructions 1 CWF563675L

• The above parts are kept for seven years in accordance with MEI service policy. • However, longer lead time will be taken in supplying the non-numbered parts. • All parts are supplied from MEPCO, Philippines (Vendor Code: 067). • “O” marked parts are recommended to be kept in stock.

30

31 [MAICO] Printed in Malaysia