Panasonic Cw Xc70ja Cw Xc90ja Repair Manual

 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 copying
and distribution is a violation of law.
CW-XC70JA
CW-XC90JA
 11  Installation Instructions 18
 12  Care and Maintenance 
21
 13  Servicing...

1 Functions
1.1. Remote Control
2 

1.2. Main Unit
3 

2 Product Specifications
UnitCW-XC70JACW-XC90JA
PhaseØSingleSingle
VoltageV220220
FrequencyHz5050
Cooling CapacitykW
Btu/h2.06
7,0002.64
9,000
Running CurrentA3.84.4
Input PowerW730935
EERBtu/hW9.69.6
Starting CurrentA15.215.5
Compressor OutputW550750
Fan Motor OutputW5151
Noise LevelIndoor
(High / Low)db(A)46 / 3746 / 39
Outdoor
(High / Low)db(A)55 / 5056 / 53
Moisture RemovalL/h
Pt/h1.3
2.71.6
3.4
Air CirculationIndoorm3/min (ft3/min)7.3 (258)7.3 (258)
Outdoorm3/min (ft3/min)11.3 (399)11.3 (399)...

3 Dimensions
3.1. Top View, Front View and Side View
3.2. Unit
ItemUnit: Inch (mm)
A - Width17-23/32” (450)
B - Height13-10/16” (346)
C - Depth22-27/32” (580)
D11-9/16” (293)
E1-15/32” (37)
F10-14/16” (276)
G11-9/16” (293)
5 

4 Refrigeration Cycle Diagram
ModelCW-XC70JACW-XC90JA
ItemPressure (MPa)Temperature (°C)Pressure (MPa)Temperature (°C)
A1.84 ~ 2.0461 ~ 761.95 ~ 2.1568 ~ 83
B1.68 ~ 1.8835 ~ 451.79 ~ 1.9935 ~ 45
C0.60 ~ 0.669~150.54 ~ 0.607~13
D0.57 ~ 0.6310 ~ 180.51 ~ 0.578~16
Note: Indoor temperature at 27°C (DB), 19°C(WB) and Outdoor at 35°C (DB),24°C (WB)forCooling.
5 Block Diagram
6 

6 Wiring Diagram
6.1. Resistance of Fan Motor
windings and the rated
Capacitor
ModelCW-XC70JA & CW-XC90JA
ConnectionCWA921154
Blue - Yellow98.1Ω
Yellow - Orange18.5Ω
Brown - Yellow97.4Ω
Red - Yellow125.8Ω
6.2. Resistance of Compressor
windings and the rated
Capacitor
ModelCW-XC70JACW-XC90JA
ConnectionCWB09759CWB09758
C-R5.193Ω3.501Ω
C-S5.557Ω3.405Ω
CapacitorCWA312074
(20µF, 370VAC)CWA312076
(30µF, 370VAC)
Note: Resistance at 20°C of Ambient Temperature.
7 Air Conditioner Performance Evaluation
Suction &...

8 Troubleshooting Guide
Warning: Disconnect unit from electrical power supply before making any electrical checks.
TroubleCheckResultCausesRemedy
Fan Motor and Compressor
won’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...

TroubleCheckResultCausesRemedy
Insufficient cooling. • Temperature Setting.
 • Ventilation door open.
 • Air filter dirty.
 • Location of installation.
 • Evaporator/Conden ser
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...

9 Operation Details
9.1. Fan Mode Operation
 • Fan operation only. Fan inoperation 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) byusing 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...