Panasonic Cw Xc90jh Repair Manual

							 4. Slide the chassis back into the cabinet. Reinstall the cabinet
to 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 increased
operating noise and vibration.
 • Ensure that airflow and noise from the rear side of the unit
(outdoor) when installed do not disturb neighboring
residents. • Obstacles placed in front of the air outlet on the rear side of
the unit (outdoor), or coversplaced over it will cause
excessive 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 Maintenance
Caution:
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 beeasily removed forcleaning purposes (referRemoval of Front Grilleprocedures).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, scouringpowder or cloth soaked in caustic chemicals.
 • If the unit is extremely dirty, heat transferis less efficient and the unit maynot cool effectively. Contact Shun Hing Electric
Service Centre Ltd. for an annual check.(Annual check is notcovered underwarranty)
 • 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.
NOTE
Do 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 chassis
as indicated (1), (2) and (3).
 2. Release the tabs at both sides of the front grille (push in the
cabinet and pull out the grille).Then, pull up the grille as to
release another two tabs at the top side of the grille.
 3. Release the temperature sensor from its holder (1) and pull
out the wire from the bushing at the cabinet (2).
 4. Pull out the unit from cabinet by holding the hand grip at the
base 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 side
and get it out from its position.
 6. Then, remove the shaft at the bottom of the compartment.
13 Servicing Information
13.1. Control Board Removal Procedure
22 
						

							 7. Pull out the control board as shown in figure. Then remove
the screw as indicated (1).
 8. Release a hook as shown in figure (1) to open up the
control 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 Diagram
17.1. Electronic Circuit Diagram (Main Unit)
26 
						

							27 
						

							Before using the circuit diagram, read the following carefully.
Intake air
temperatureTemperature
settingDischarge air
temperaturePipe
temperature
Cooling27°C16°C17°C15°C
 • Indications for resistance
 − a. K...KΩ
b. W...WATT
c. M...MΩ
d. Not indicated...1/4W
 − Type
Not indicatedCarbon resistor
Tolerance (+-) 5%
Metal oxide resistor
Tolerance (+-) 1%
 • Indications for capacitor
Unit − µ...µF
 − P...pF
Type − Not indicated...ceramic capacitor
 − (S)...S series aluminium electrolytic capacitor
 − (Z)...Z series aluminiumelectrolytic capacitor
 − (SU)...SU series aluminium electrolytic capacitor
 − (K)...K series aluminium electrolytic capacitor
 − (P)...P seriespolyester 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 measurement
Voltage has been measured with a digital tester when the fan is set at high fan speed under the following conditions without
setting the timer.
Use them for servicing.
Voltage indication is in red.
17.4. Timer Table
NameTimeTest Mode (Shortened CN-TEST pin)Remarks
Hour Timer1 hr.
10 min.
1 min.1 min.
10 sec.
1 sec.
Time delay SafetyControl2 min. 58 sec.0 sec.
Forced Operation60 sec.0 sec.
Time Save Control7 min.42 sec.
Freeze Prevention Control3 min.0 sec.
Compressor Reverse Rotation Detection2 min.0 sec.
Starting Current Control1.6 sec.0 sec.
Powerful Operation15 min.15 sec.
Random Auto Restart Control0 ~ 62 sec.0 ~ 6.2 sec.Add value to TimeDelay 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 List
Ref. No.Part Name & DescriptionQty.CW-XC90JHRemarks100Base Pan Assembly1CWD52K1058AL101Bulkhead Assembly1CWD531012L102Air Guide - Propeller Fan1CWD311018L103Bracket - Fan Motor1CWD541042L104Particular Piece - Stopper1CWD932251L105Self Tapping Screw1XTT4+8JL113Ventilation Lever1CWH221006L117Vane - Air Swing1CWE241117L121Propeller Fan1CWH001013L122Nut - Propeller Fan1CWH56032L124Holder - Capacitor (Compressor)1CWH301009L125Control Board complete1CWH14C3374L125-AControl Board (Main)1CWH102177L126Control Board (Front)1
1CWH102178L
CWH102177L
127Plain Washer1CWXWE6L128Holder - Sensor1CWH321008L129Drain Plug - Base Pan1CWH4611062L135Air Guider - Blower Wheel1CWD32C1021L140Turbo Fan1CWH031004L141Nut - Turbo Fan1CWH56053142Plain Washer1CWXWH6F16L200Compressor1CWB092141
KG3AF100-1000
201Bushing - Compressor Mount3CWH50072202Nut - Compressor Mount3CWH4582065L203Packing - Terminal Cover1CWB811008204Holder - Overload Protector1CWH7041200L205Terminal Cover - Compressor1CWH7070221U207Nut - Terminal Cover1CWH7080300208Packing1CWB811009210Fin & Tube Condenser complete1CWB32C1245L211Strainer1CWB11101212Capillary Tube1CWB152203220Fin & Tube Evaporator complete1CWB30C1247L
300Fan Motor1
1
1CWA921156
CWA921157
CWA921176
301Auto Circuit Breaker1
1CWA121064+M
CWA121067+M
303Capacitor - Compressor1
1CWA312075
DS371256CPNA0
308Sensor Complete1CWA50C2113
CWA50C2096
309Control Board Cover1CWH31125L311Power Supply Cord1CWA20C2268312Air Swing Motor1CWA981079328Electronic Controller (Main)1CWA742886-WN329Electronic Controller (Indicator)1CWA742060-WN330Remote Control Complete1CWA75C2230500Front Grille Complete1CWE11C2076L501Air Filter1
1CWD001081L
CWE312290L
502Particular Piece-Front Cover1
1CWE141058L
CWD932236L
503Intake Grille1CWE221074L505Vane1CWE241118L510Front Grille1CWE101020L600Cabinet Complete1CWE00C1079L601Bushing2CWH51071D610Drain Pan1CWH401012L-E612Particular Plate1CWD911289L613Self Tapping Screw4XTT4-12CL702Screw - Bracket Fan Motor4XTT4+8JL707Screw - Front Grille Mount (Center)1CWH551069A710Screw - Drain Pan1XTT4D8CL715Operating Instructions1CWF563675L
 • The above parts are kept for sevenyears in accordancewith MEIservice 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