Panasonic CW-C70YE User manual

1 Product Specification 2
2 Dimensions 2
3 Wiring Diagram 3
4 Refrigeration Cycle Diagram 4
5 Air Conditioner Performance Evaluation 4
6 Troubleshooting Guide 4
7 Operating Instructions 6
© 2000 Matsushita Industrial Corp. Sdn. Bhd.
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
CW-C70YE
CW-C90YE
8 How to Install 8
9 Care and Maintenance 11
10 Service Information 12
11 Technical Data 13
12 Exploded View 14
13 Replacement Part List 15
Room Air Conditioner
CONTENTS
Page Page
Order No. MAC0007024C2

Model CW-C70YE CW-C90YE
Phase Single Single
Voltage 230 - 220 V 230 - 220 V
Frequency 50 Hz 50 Hz
Cooling Capacity 2.06 - 2.06 kW
7,000 - 7,000 Btu/h 2.65 - 2.64 kW 9,040 - 9,000 Btu/h
Running Current 3.0 - 3.1 A 4.0 - 4.1 A
Input Power 680 - 660 W 910 - 880 W
EER 3.03 - 3.12 W/W 2.91 - 3.00 W/W
Starting Current 12.4 A 18 A
Compressor Output 550 W 750 W
Fan Motor Output 40 W 40 W
Noise Level Indoor (High / Low):
46 / 43 - 45 / 41 dB(A)
Outdoor (High / Low):
56 / 51 - 55 / 50 dB(A)
Indoor (High / Low):
46 / 43 - 45 / 42 dB(A)
Outdoor (High / Low):
57 / 54 - 56 / 53 dB(A)
Power Level Indoor: 59 dB(A)
Outdoor: 68 dB(A) Indoor: 59 dB(A) Outdoor: 68 dB(A)
Item All listed models
A (Width) 17-23/32” (450 mm)
B (Height) 13-5/8” (346 mm)
C (Depth) 22-27/32” (580 mm)
D 21-1/4” (540 mm)
E5-21/32” (144 mm)
F6-1/32” (153 mm)
G1-31/32” (50 mm)
H3-27/32” (98 mm)
I1-3/16” (30 mm)
J3-27/32” (98 mm)
Model CW-C70YE CW-C90YE
Moisture Removal 1.3 Ltr/h
2.7 Pint/h 1.6 Ltr/h 3.4 Pint/h
Air Circulation 7.3 m3/min.
260 Ft3/min. 7.3 m3/min. 260 Ft3/min.
Dimensions Height: 13-5/8 inches
(346 mm)
Width: 17-23/32 inches
(450 mm)
Depth: 22-27/32 inches
(580 mm)
Height: 13-5/8 inches
(346 mm)
Width: 17-23/32 inches
(450 mm)
Depth: 22-27/32 inches
(580 mm)
Net Weight 31.5 kg
69 Ib 34.5 kg 76 Ib
Refrigerant (R-22) 520 g
18.4 oz 475 g 16.8 oz
Note: Specifications are subject to change without notice for further
improvement.
Item All listed models
K1-9/16” (40 mm)
L9-7/32” (234 mm)
M3-27/32” (98 mm)
N2-31/32” (75 mm)
O1-11/16” (43 mm)
P3-17/32” (90 mm)
Q0-29/32” (23 mm)
R 10-11/32” (263 mm)
1 Product Specification
2 Dimensions
2.1. Top View, Front View & Side View
2.2. Unit
2
CW-C70YE / CW-C90YE

3 Wiring Diagram
3.2. Resistance of Fan Motor
windings and the rated
Capacitor.
Model CW-C70YE CW-C90YE
Connection CWA921025 CWA92303
Blue - Yellow 96.9 Ω96.9 Ω
Yellow - Orange 38.4 Ω31.4 Ω
Red - Yellow 115.3 Ω115.3 Ω
Capacitor CWA31607
(2.3µF, 400VAC) CWA31607 (2.3µF, 400VAC)
3.3. Resistance of Compressor
windings and the rated
Capacitor.
Model CW-C70YE CW-C90YE
Connection 2RS122D5BB02 2PS156D5CA02
C-R 5.193 Ω3.501 Ω
C-S 5.557 Ω3.405 Ω
Capacitor CWA31501
(20µF, 370VAC) CWA31503 (30µF, 370VAC)
Note: Resistance at 20°C of Ambient Temperature.
3.1.
3
CW-C70YE / CW-C90YE

4.2. CW-C70YE
Item Pressure (MPa) Temperature (°C)
A 1.86 ~ 2.06 70 ~ 85
B 1.81 ~ 2.01 31 ~ 41
C 0.59 ~ 0.66 8~14
D 0.54 ~ 0.59 13 ~ 21
Note: Indoor temperature at 27°C (DB), 19°C (WB) and Outdoor at
35°C (DB), 24°C (WB).
4.3. CW-C90YE
Item Pressure (MPa) Temperature (°C)
A 1.96 ~ 2.22 71 ~ 89
B 1.91 ~ 2.06 35 ~ 45
C 0.56 ~ 0.63 7~12
D 0.50 ~ 0.56 6~14
Note: Indoor temperature at 27°C (DB), 19°C (WB) and Outdoor at
35°C (DB), 24°C (WB).
4 Refrigeration Cycle Diagram
4.1.
5 Air Conditioner Performance Evaluation
Intake & Discharge Air
Temperature Difference Current Drain Determination Remedy
• 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 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 difference will be smaller.
6 Troubleshooting Guide
Warning: Disconnect unit from electrical power supply before making any electrical checks.
Trouble Check Result Cause Remedy
Fan Motor and Compressor
won’t run. • Supply Voltage
• Fuse Box or Circuit
Breaker.
• Power cord or
Wiring Harness.
• Thermostat Setting.
• Less than 10% by
Rated.
• Open Contacts.
• Pulled loose or
Shorted.
• Higher than room
temp.
• Temporary or Permanent?
• Customer Restarted unit
immediately without waiting
3 minutes.
• Consult ELECTRICIAN, If
permanent.
• Repair Open Circuit.
• WAIT FOR 3 MINUTES.
• Repair or Replace it.
• Set it LOWER.
4
CW-C70YE / CW-C90YE

Trouble Check Result Cause Remedy
Fan Motor won’t run
(Compressor run). • Objects around
Fan.
• RESISTANCE
between Wires.
• Capacitor Fan
Motor.
• Main Control
Switch.
• Locked Fan.
• Shorted / Open
circuit.
• OHM Meter doesn’t
Deflect.
• No contacts at
Position Shown.
• Fan Hitting Cowling or
• Foreign Materials.
• Frozen Bearings.
• Shorted or Burned out.
• Capacitor Defect.
• Main Control Switch defect.
• Adjust Fan position setting
screw.
• Remove Foreign Materials.
• Replace Fan Motor.
• Replace Fan Motor.
• Replace Capacitor Fan.
• Replace Main Control
Switch.
Compressor won’t run (Fan
run). • Thermostat setting.
• RESISTANCE
between Terminal
and the
Compressor Body.
• RESISTANCE
between Terminals.
• Overload Protector.
• Capacitor
Compressor.
• Thermostat.
• Main Control
Switch.
• Higher than room
temp.
• Shorted.
• Shorted.
• Infinity between
Terminals.
• OHM Meter doesn’t
deflect.
• No click heard.
• No contacts at
Position Shown.
• Winding Coil touched to
the compressor shell.
• Rear Shorted or Burnt out.
• Overload Protector defect.
• Capacitor defect.
• Thermostat defect.
• Main Control Switch defect.
• Set it lower.
• Replace Compressor.
• Replace Compressor.
• Replace Overload
Protector.
• Replace Capacitor
Compressor.
• Replace Thermostat.
• Replace Main Control
Switch.
Air Swing won’t run. • Main Control
Switch.
• Air Swing Switch.
• Resistance
between wires.
• High or Low Fan
setting.
• OFF position.
• No contact at
position.
• OHM Meter doesn’t
deflect.
• Open circuit.
• Shorted or open circuit.
• Set it High or Low Cool.
• Set it ON.
• Replace Air Swing Switch.
• Replace Air Swing Motor.
Insufficient cooling. • Thermostat 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
temp.
• Open.
• Clogged or dirty.
• Sunlight hitting
outdoor side.
• Obstacles.
• Clogged or dirty.
• Not satisfied.
• REFER TO
PERFORMANCE
EVALUATION.
• 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 the coils.
• 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.
• Normal occurrence.
Water dripping inside room. • Unit installation.
• Drain Tray-
Styrofoam pieces
blocking drain
channel.
• Tilted to inside room.
• Clogged.
• Restricted run off.
• Clogged or blocked.
• Tilt unit to outside slightly.
• Remove the foreign
materials.
Frozen Evaporator • Thermostat setting.
• Air filter /
Evaporator.
• Temp. difference
and running
current.
• Set too low for
ambient conditions.
• Clogged or Dirty.
• REFER TO
PERFORMANCE
EVALUATION.
• Outdoor temp. low (Night
time).
• Restricted air circulation.
• Leakage of refrigerant or
refrigeration system is
blocked.
• Set the Main Control Knob
to Fan to melt ice and set
the Temp. Control to
higher temperature.
• Clean Air filter /
Evaporator.
• Locate and repair leak.
• Flush refrigeration cycle.
5
CW-C70YE / CW-C90YE