Panasonic Cw Xc71ya Cw Xc91ya Repair Manual
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ModelCW -XC71YACW -XC91YA PhaseSingleSingle Voltage220 V220 V Frequency50 Hz50 Hz Cooling Capacity2.06 kW 7,000 Btu/h2.64 kW 9,000 Btu/h Running Current3.1 A4.1 A Input Power650 W880 W EER3.17 W/W3.00 W/W Starting Current11 A18 A Compressor Output550 W750 W Noise LevelIndoor (High / Low): 45 dB(A) / 35 dB(A) Outdoor (High / Low): 55 dB(A) / 50 dB(A)Indoor (High / Low): 45 dB(A) / 37 dB(A) Outdoor (High / Low): 56 dB(A) / 53 dB(A) Moisture Removal1.3 Ltr/h 2.7 Pint/h1.6 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-XC71YA CW-XC91YA ModelCW -XC71YACW -XC91YA Air Circulation7.1 m3/min. 250 Ft 3/min. 7.1 m3/min. 250 Ft 3/min. DimensionsHeight: 346 mm (13-5/8 inches) Width: 450 mm (17-23/32 inches) Depth: 580 mm (22-27/32 inches)Height: 346 mm (13-5/8 inches) Width: 450 mm (17-23/32 inches) Depth: 580 mm (22-27/32 inches) Net Weight31 kg 68 Ib34 kg 75 Ib Refrigerant (R-22)510 g 18.0 oz465 g 16.4 oz Note: Specifications are subject to change without notice for further improvement. Room Air Conditioner Specification Order No. MAC0107036C3
1 Functions 2 2 Dimensions 4 3 Refrigeration Cycle Diagram 5 4 Block Diagram 5 5 Wiring Diagram 6 6 Air Conditioner Performance Evaluation 7 7 Troubleshooting Guide 8 8 Operation Details 9 9 Operating Instructions 12 10 How To Install 17 11 Care and Maintenance 21 12 Service Information 22 13 Exploded View 23 14 Replacement Part List 24 15 Electronic Circuit / Indicator Complete 25 16 Electronic Circuit / Main 25 17 Technical Data 26 18 Electronic Circuit Diagram 27 CONTENTS Page Page 1 Functions 1.1. Remote Control 2 CW-XC71YA / CW-XC91YA
2 Dimensions 2.1. CW-XC71YA CW-XC91YA 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-XC71YA / CW-XC91YA
3.1. CW-XC71YA CW-XC91YA3.2. CW-XC71YA ItemPressure (MPa)Temperature (°C) A1.91 ~ 2.1170 ~ 85 B1.86 ~ 2.0635 ~ 45 C0.60 ~ 0.668~14 D0.57 ~ 0.6310 ~ 18 Note: Indoor temperature at 27°C (DB), 19°C(WB) andOutdoor at 35°C (DB), 24°C(WB). 3.3. CW-XC91YA 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-XC71YA CW-XC91YA 5 CW-XC71YA / CW-XC91YA
5.2. Resistance of Fan Motor windings and the rated Capacitor. ModelCW-XC71YACW-XC91YA ConnectionCWA921085CWA921085 Blue - Yellow76.6Ω76.6Ω Yellow - Brown19.2Ω19.2Ω Brown - Orange133.3Ω133.3Ω Red - Yellow119.1Ω119.1Ω 5.3. Resistance of Compressor windings and the rated Capacitor. ModelCW-XC71YACW-XC91YA Connection2RS122D5AA042PS156D5CA02 C-R4.023Ω3.501Ω C-S8.803Ω3.405Ω CapacitorCWA312074 (15µF, 400VAC)DS371306CPNA (30µF, 370VAC) Note: Resistance at 20°C of Ambient Temperature. 5 Wiring Diagram 5.1. CW-XC71YA CW-XC91YA 6 CW-XC71YA / CW-XC91YA
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.
7
CW-XC71YA / CW-XC91YA
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.
8
CW-XC71YA / CW-XC91YA
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 fanmotorwill 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).
9
CW-XC71YA / CW-XC91YA
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.
10
CW-XC71YA / CW-XC91YA