Panasonic Cw Xc71ya Cw Xc91ya Repair Manual

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...

 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...

1.2. Main Unit
3
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...

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....

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...

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...

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....

8.2.6. 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...