Panasonic Cw Xc91yh Repair Manual
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ModelCW -XC91YH PhaseSingle Voltage240 - 220 V Frequency50 Hz Cooling Capacity2.67 - 2.64 kW 9,100 - 9,000 Btu/h Running Current4.3 - 4.4 A Input Power975 - 935 W EER2.74 - 2.82 W/W Starting Current16.9 A Compressor Output750 W Noise LevelIndoor (High / Low): 49 / 45 - 47 / 43 Outdoor (High / Low): 58 / 54 - 57 / 53 Moisture Removal1.6 Ltr/h 3.4 Pint/h © 2001 Matsushita Industrial Corp. Sdn. Bhd. (11969-T). All rights reserved. Unauthorized copying and distribution is a violation of law. CW-XC91YH ModelCW -XC91YH Air Circulation7.6 m3/min. 270 Ft 3/min. DimensionsHeight: 346 mm (13-5/8 inches) Width: 450 mm (17 - 23/32 inches) Depth: 580 mm (22 - 27/32 inches) Net Weight34 kg 75 Ib Refrigerant (R-22)480 g 16.9 oz Note: Specifications are subject to change without notice for further improvement. Room Air Conditioner Specification Order No. MAC0107030C3
1 Functions 2 2 Dimensions 4 3 Refrigeration Cycle Diagram 5 4 Block Diagram 5 5 Wiring Diagram 6 6 Air Conditioner Performance Evaluation 6 7 Troubleshooting Guide 7 8 Operation Details 8 9 Operating Instructions 11 10 How To Install 16 11 Care and Maintenance 20 12 Service Information 21 13 Exploded View 22 14 Replacement Part List 23 15 Electronic Circuit / Indicator Complete 24 16 Electronic Circuit / Main 24 17 Technical Data 25 18 Electronic Circuit Diagram 26 CONTENTS Page Page 1 Functions 1.1. Remote Control 2 CW-XC91YH
2 Dimensions 2.1. CW-XC91YH 2.1.1. Top View, Front View and Side View. ItemUnit: Inch (mm) A - Width17-23/32” (450) B - Height13-5/8” (346) C - Depth22-27/32” (580) D21-1/4” (540) E5-21/32” (144) F6-1/32” (153) G1-31/32” (50) H3-27/32” (98) I1-3/16” (30) J3-27/32” (98) K1-9/16” (40) L9-7/32” (234) M3-27/32” (98) N2-31/32” (75) O1-11/16” (43) P3-17/32” (90) Q0-29/32” (23) R10-11/32” (263) 4 CW-XC91YH
3.1. CW-XC91YH3.2. CW-XC91YH ItemPressure (MPa)Temperature (°C) A2.00 ~ 2.2072 ~ 87 B1.95 ~ 2.1535 ~ 45 C0.54 ~ 0.607~13 D0.51 ~ 0.579~17 Note: Indoor temperature at 27°C (DB), 19°C(WB) andOutdoor at 35°C (DB), 24°C(WB). 3 Refrigeration Cycle Diagram 4 Block Diagram 4.1. CW-XC91YH 5 CW-XC91YH
5.2. Resistance of Fan Motor
windings and the rated
Capacitor.
ModelCW-XC91YH
ConnectionCWA921091
Blue - Yellow78.7Ω
Yellow - Brown8.18Ω
Brown - Orange57.1Ω
Red - Yellow117.2Ω
5.3. Resistance of Compressor
windings and the rated
Capacitor.
ModelCW-XC91YH
Connection2PS156D5EA02
C-R3.597Ω
C-S4.868Ω
CapacitorDS371306CPNA
(25µF, 370VAC)
Note: Resistance at 20°C of Ambient Temperature.
5 Wiring Diagram
5.1. CW-XC91YH
6 Air Conditioner Performance Evaluation
Suction & Discharge Air
Temperature DifferenceCurrentDeterminationRemedy
•
• • • 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, heat
radiation is not efficient.
•
• • • Improve heat radiation.
•
• • • Under 8°C (14.4°F)
•
• • • Higher than specified.
•
• • • Something is preventing heat
radiation.
•
• • • 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 differen ce will be smaller.
6
CW-XC91YH
7 Troubleshooting Guide
Warning: Disconnect unit from electrical powersupply before making any electrical checks.
TroubleCheckResultCauseRemedy
Fan Motor and
Compressor won’t run.
•
• • • Supply Voltage
•
• • • Fuse Box or Circuit
Breaker.
•
• • • Power cord orWiring
Harness.
•
• • • Temp. Setting.
•
• • • Less than 10% by
Rated.
•
• • • Open Contacts.
•
• • • Pulled loose or
Shorted.
•
• • • Higher than ROOM
TEMP.
•
• • • Customer Restarted unit
immediately without
waiting 3 minutes.
•
• • • Consult ELECTRICIAN,
•
• • • Repair Open Circuit.
•
• • • W AIT FOR 3 MINUTES.
•
• • • Repair or Replace it.
•
• • • Set it LOWER.
Fan Motor won’t run.
•
• • • Objects around Fan.
•
• • • RESISTANCE
betweenWires.
•
• • • Capacitor Fan Motor.
•
• • • Locked Fan.
•
• • • Shorted/ Open circuit.
•
• • • OHM Meter doesn’t
Deflect.
•
• • • Fan Hitting Cowling or
•
• • • 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
Motor.
Compressor won’t run
(Fan Runs).
•
• • • Temp. setting.
•
• • • RESISTANCE
between Terminal
and the Compressor
Body.
•
• • • RESISTANCE
between Terminals.
•
• • • Capacitor
Compressor.
•
• • • Inner Protector.
•
• • • Higher than room
temperature.
•
• • • Shorted.
•
• • • Shorted.
•
• • • OHM Meter doesn’t
deflect.
•
• • • Infinity between
Terminals.
•
• • • W inding Coil touched to
the Body.
•
• • • Rare Shorted or Burnt out.
•
• • • Capacitor defect.
•
• • • Inner Protector defect.
•
• • • Set it lower.
•
• • • Replace Compressor.
•
• • • Replace Compressor.
•
• • • Replace Capacitor
Compressor.
•
• • • Replace Protector.
Insufficient cooling.
•
• • • Temp. setting.
•
• • • Ventilation Door
open.
•
• • • Air filter dirty.
•
• • • Location of
installation.
•
• • • Evaporator /
Condenser Coil
obstructed.
•
• • • Unit capacity for the
room too small.
•
• • • Temp 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
EVALUATIO N.
•
• • • 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 Vent door.
•
• • • Clean or Replace Air
Filter.
•
• • • Consider building an
AWNING.
•
• • • Remove obstacles or
reinstall unit.
•
• • • Clean using steam
cleaner.
•
• • • 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-
STYROFOA M pieces
blocking Drain
Channel.
•
• • • Tilted to inside room.
•
• • • Clogged.
•
• • • Restricted run off.
•
• • • Clogged or blocked.
•
• • • Tilt unit to outside slightly.
•
• • • Remove the foreign
materials.
7
CW-XC91YH
8 Operation Details
8.1. Fan Mode Operation
•
• • • Fan operation only. Fan in operation according to Remote Control or Main Unit (Touch Control Panel) setting.
8.1.1. 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).
8.2. Cooling Mode Operation
•
• • • Cooling in operation according to Remote Control or Main Unit (Touch Control Panel) setting.
8.2.1. Time Delay Safety Control (3 minute)
•
• • • W hen the compressor is stopped by Power Switch and Operation Switch at the Remote Control or Main Unit (Touch Control
Panel), it restart after 3 minutes when the Power Switch and Operation Switch at the Remote Control or Main Unit (Touch
Control Panel) is turned ON.
•
• • • W hen 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.
8.2.2. 7 minutes Time Saved Control
•
• • • The compressor will start automatically if it has stopped for 7 minutes even if theroom temperature is between the compressor
ON temperature and OFF temperature.
8.2.3. Starting Current Control
•
• • • W hen the compressor and fan motor are simultaneously started, the fanmotor will operate 1.6 seconds later.
8.2.4. Freeze Prevention Control
If the temperature of the indoor heat exchan ger falls
continuously below 1°C for 3 minutes ormore, the
compressor turns off to protect the heat exchan gerfrom
freezing. The fan speed setting remains the same.
Compressor restarts when the heat exchanger temperature
rises to 12°C (Recovery).
*3 minutes waiting of Time Delay Safety Control is valid for
Cooling Operation.
8.2.5. Compressor Reverse Rotation Protection Control
•
• • • If the compressor is operating continuously for 5 minutes or longer and thetemperature differen ce between intake air and heat
exchan ger is 2.5°C or less for 2 minutes, compressor will stop and restart automatically (TimeDelay Safety Control is valid).
8
CW-XC91YH
8.2.6. Cooling Operation Time Diagram
8.3. Powerful Operation
•
• • • Purpose of this operation is to obtain the setting temperature quickly.
•
• • • W hen 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.
8.4. 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 (TimeDelay Safety Control is valid) as the operation was not
stopped 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 is set during power failure, Powerful will not start automatically along with previous operation mode after power
resume.
•
• • • This control can be omitted by open the circuit of JX1.
9
CW-XC91YH
8.5. 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 the
Remote Control or Main Unit (Touch Control Panel).
8.6. Airflow Direction Control
8.6.1. Horizontal Airflow Direction
When AirSwing Button/Pad is pressed with Remote Control
or Main Unit (Touch Control Panel) in the Auto Airflow, the
airflow direction louver swings side to side within the full swing
range as shown in the “Diagram”.
The louver can be adjusted by pressing the Button/Pad again
at the Remote Control or Main Unit (Touch Control Panel) to
the desired louver position .
Whenstopped with Remote Control or Main Unit (Touch
Control Panel), the louver vane is reset, and stopped at the
closing position .
“Diagram”
8.6.2. Vertical Airflow Direction
•
• • • The upward and downward airflow direction vane can be adjusted manually by hand.
8.7. Remote Control Signal Receiving Sound
•
• • • To switch off the beep sound.
Press the “Operation OFF/ON Button/Pad“continuou sly for 10 second or more.
Repeat the above if you want to switch ON the beep sound or switch OFF and ON back the Power Switch at the Main Unit.
*However, if the “Operation OFF/ON Button/Pad” have been pressed, the previous operation mode will be activated. If you do
not require this operation, you may change it by using the Remote Control or Main Unit (Touch Control Panel).
10
CW-XC91YH