Panasonic CW-C180ES, CW-C240ES, CW-A180ES, CW-A240ES, CW-SC180ES Service Manual

1 Product Specifications 2
2 Dimensions

3

3 Wiring Diagram

4

4 Refrigeration Cycle Diagram

6

5 Air Conditioner Performance Evaluation

7

6 Troubleshooting Guide

7

7 Operating Instructions

9

© 2000 Matsushita Industrial Corp. Sdn. Bhd.
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.

CW-C180ES
CW-C240ES
CW-A180ES
CW-A240ES
CW-SC180ES

8 How to Install 13
9 Technical Data

17

10 Care and Maintenance

19

11 Service Information

20

12 Exploded View

21

13 Replacemen t Part List

22

Room Air Conditioner

CONTENTS

Page Page

Order No. MAC0011061C3

1 Product Specifications

1.1. CW-C180ES, CW-C240ES & CW-SC180ES.

Model CW-C180ES

CW-SC180ES

CW-C240ES

Phase Single Single
Voltage 220 V 220 V
Frequency 60 Hz 60 Hz
Capacity 5.42 kW

18,500 Btu/h

7.03 kW

24,000 Btu/h
Running Current 9.7 A 12.8 A
Input Power 2.09 kW 2.72 kW
EER 8.85 Btu/h.W 8.82 Btu/h.W
Starting Current 39 A 51 A
Noise Level Indoor (High / Low): 52 / 48 dB(A)

Outdoor (High / Low): 59 / 55 dB(A)

Indoor (High / Low): 58 / 54 dB(A)

Outdoor (High / Low): 63 / 60 dB(A)
Fan Motor Output 100 W 170 W
Compressor Output 1.4 kW 1.7 kW
Moisture Removal 0.7 Ltr/h

1.5 Pint/h

1.3 Ltr/h

2.7 Pint/h

Air Circulation 14.0 m3/min.

490 Ft

3

/min.

16.8 m3/min.
590 Ft

3

/min.

Dimensions Height: 16-7/8 inches (428 mm)

Width: 26 inches (660 mm)

Depth: 27-9/16 inches (700 mm)

Height: 16-7/8 inches (428 mm)

Width: 26 inches (660 mm)

Depth: 30-11/32 inches (770 mm)

Net Weight 62 kg

137 Ib

70 kg

154 Ib

Refrigerant (R-22) 760 g

26.8 oz

1.08 kg

38.1 oz

Note: Specifications are subject to change without notice for further improvement.

1.2. CW-A180ES & CW-A240ES.

Model CW-A180ES CW-A240ES

Cooling Heating Cooling Heating
Phase Single Single
Voltage 220 V 220 V
Frequency 60 Hz 60 Hz
Capacity 5.13 kW

17,500 Btu/h

4.60 kW

15,700 Btu/h

6.45 kW

22,000 Btu/h

5.60 kW

19,100 Btu/h
Running Current 10.1 A 8.0 A 13.3 A 10.5 A
Input Power 2.17 kW 1.70 kW 2.82 kW 2.23 kW
EER 8.06 Btu/h.W ------ 7.80 Btu/h.W -----­COP ------ 9.24 Btu/h.W ------ 8.57 Btu/h.W
Starting Current 39 A 51 A
Noise Level Indoor (High / Low):

52 / 48 dB(A)

Outdoor (High / Low):

59 / 55 dB(A)

Indoor (High / Low):

52 / 48 dB(A)

Outdoor (High / Low):

60 / 56 dB(A)

Indoor (High / Low):

58 / 54 dB(A)

Outdoor (High / Low):

64 / 61 dB(A)

Indoor (High / Low):

58 / 54 dB(A)

Outdoor (High / Low):

65 / 62 dB(A)
Fan Motor Output 100 W 170 W
Compressor Output 1.4 kW 1.7 kW
Moisture Removal 0.6 Ltr/h

1.3 Pint/h

1.1 Ltr/h

2.3 Pint/h

Air Circulation 14.0 m3/min.

490 Ft

3

/min.

16.8 m3/min.
590 Ft

3

/min.

Dimensions Height: 16-7/8 inches (428 mm)

Width: 26 inches (660 mm)

Depth: 27-9/16 inches (700 mm)

Height: 16-7/8 inches (428 mm)

Width: 26 inches (660 mm)

Depth: 30-11/32 inches (770 mm)

Net Weight 62 kg

137 Ib

70 kg

154 Ib

Refrigerant (R-22) 830 g

29.3 oz

1.12 kg

39.5 oz

Note: Specifications are subject to change without notice for further improvement.

2

2 Dimensions

Item CW-C180ES

CW-A180ES

CW-SC180ES

CW-C240ES
CW-A240ES

A - Width 26” (660)

B - Height 16-7/8” (428)

C - Depth 27-9/16” (700) 30-11/32” (770)

D 1-31/32” (50)
E 8-21/32” (220)
F 12-19/32” (320) 10-1/4” (260)
G 4-11/32” (110) 9-7/16” (240)
H 13-5/32” (334) 12-3/4” (324)

I 5-3/16” (132) 7-9/16” (192)

J 9-7/32” (234) 10” (254)

K 3-5/32” (80)

L 12-17/32” (318)
M 10-5/16” (262)
N 1-21/32” (42)
O 12-17/32” (318)
P 2-11/16” (68)
Q 9-7/16” (240) 12-7/32” (310)
R 7-15/32” (190)

Unit: Inch (mm)

2.1. Top View, Front View & Side View.

2.2. Unit.

3

CW-C180ES / CW-C240ES / CW-A180ES / CW-A240ES / CW-SC180ES

3 Wiring Diagram

3.1.1. Resistance of Fan Motor windings
and the rated Capacitor.

CW-C180ES

CW-SC180ES

CW-C240ES

Connection CWA951053 CWA951069
Blue - Yellow 34.1 Ω 22.25 Ω
Yellow - Brown 6.5 Ω 4.04 Ω
Brown - Orange 6.2 Ω 2.97 Ω
Red - Yellow 41.1 Ω 27.13 Ω
Capacitor CWA312048

(5µF, 440VAC)

CWA312052

(8µF, 440VAC)

3.1.2. Resistance of Compressor
windings and the rated Capacitor.

CW-C180ES

CW-SC180ES

CW-C240ES

Connection 2KS282H6CA02 2JS350H4CA02
C-R 1.239 Ω 0.934 Ω
C-S 1.721 Ω 1.558 Ω
Capacitor CWA31507

(50µF, 370VAC)

CWA31507

(50µF, 370VAC)

Note: Resistance at 20°C of Ambient Temperature.

3.1. CW-C180ES, CW-C240ES & CW-SC180ES.

4

3.2.1. Resistance of Fan Motor windings
and the rated Capacitor.

CW-A180ES CW-A240ES
Connection CWA951059 CWA951073
Blue - Yellow 34.1 Ω 22.25 Ω
Yellow - Orange 12.7 Ω 7.01 Ω
Red - Yellow 41.1 Ω 27.13 Ω
Capacitor CWA312048

(5µF, 440VAC)

CWA312052

(8µF, 440VAC)

3.2.2. Resistance of Compressor
windings and the rated Capacitor.

CW-A180ES CW-A240ES
Connection 2KS282H6CA02 2JS350H4CA02
C-R 1.239 Ω 0.934 Ω
C-S 1.721 Ω 1.558 Ω
Capacitor CWA31507

(50µF, 370VAC)

CWA31507

(50µF, 370VAC)

Note: Resistance at 20°C of Ambient Temperature.

3.2. CW-A180ES & CW-A240ES.

5

CW-C180ES / CW-C240ES / CW-A180ES / CW-A240ES / CW-SC180ES

4.2.1. Cooling.

CW-A180ES CW-A240ES

Item Pressure

(MPa)

Temperature

(°C)

Pressure

(MPa)

Temperature

(°C)
A 2.83 ~ 2.93 76 ~ 92 2.79 ~ 2.89 84 ~ 100
B 2.73 ~ 2.83 55 ~ 65 2.69 ~ 2.79 56 ~ 66
C 0.64 ~ 0.70 12 ~ 16 0.58 ~ 0.67 10 ~ 14
D 0.59 ~ 0.65 8~16 0.50 ~ 0.56 8~16

Note: Indoor temperature at 27°C (DB), 19°C (WB) and Outdoor at
35°C (DB), 24°C (WB) for Cooling.

4.1.1. Cooling.

CW-C180ES & CW-SC180ES CW-C240ES

Item Pressure

(MPa)

Temperature

(°C)

Pressure

(MPa)

Temperature

(°C)
A 2.65 ~ 2.85 81 ~ 91 2.77 ~ 2.97 78 ~ 88
B 2.55 ~ 2.75 54 ~ 64 2.67 ~ 2.87 53 ~ 63
C 0.63 ~ 0.69 10 ~ 15 0.57 ~ 0.62 9~14
D 0.58 ~ 0.64 9~14 0.55 ~ 0.60 8~13

Note: Indoor temperature at 29°C (DB), 19°C (WB) and Outdoor at
46°C (DB), 24°C (WB) for Cooling.

4.2.2. Heating.

CW-A180ES CW-A240ES

Item Pressure

(MPa)

Temperature

(°C)

Pressure

(MPa)

Temperature

(°C)
A 0.26 ~ 0.32 -9 ~ -1 0.26 ~ 0.32 -10 ~ -3
B 0.40 ~ 0.47 0~4 0.42 ~ 0.49 1.5 ~ 5.5
C 1.34 ~ 1.44 32 ~ 42 1.52 ~ 1.62 42 ~ 48
D 1.49 ~ 1.59 41 ~ 57 1.62 ~ 1.72 50 ~ 60

Note: Indoor temperature at 20°C (DB), 15.5°C (WB) and Outdoor at
7°C (DB), 6°C (WB) for Heating.

4 Refrigeration Cycle Diagram

4.1. CW-C180ES, CW-C240ES & CW-SC180ES.

4.2. CW-A180ES & CW-A240ES.

6

5 Air Conditioner Performance Evaluation

5.1. Cooling.

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 and repair leak.

• Flush refrigeration cycle.

• Under 8°C (14.4°F) • Higher than specified by

50%.

• Compressor defect or
compressor capacitor defect.

• Replace the compressor or
compressor capacitor.

Note: Room air humidity is relatively higher, the temperature difference will be smaller.

5.2. Heating.

Intake & Discharge Air

Temperature Difference

Current Drain Determination Remedy

• 14°C and over (25.2°F) • As specified. • Nothing wrong. • None.

• 14°C and over (25.2°F) • Higher than specified. • Nothing wrong, outdoor

temperature is high.

• Something is preventing heat
radiation at indoor heat
exchanger.

• None.

• Clean air filter.

• Under 14°C (25.2°F) • Lower than specified. • Nothing wrong, outdoor

temperature is low.

• Something is preventing heat
radiation at outdoor heat
exchanger.

• Leakage of refrigerant.

• Refrigerant system is blocked.

• None.

• Improve heat radiation at

outdoor heat exchanger.

• Locate and repair leak.

• Flush refrigeration cycle.

• Under 14°C (25.2°F) • Higher than specified by

50%.

• Compressor defect.

• Compressor capacitor defect

• Replace the compressor.

• Replace the compressor

capacitor.

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.

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.

7

CW-C180ES / CW-C240ES / CW-A180ES / CW-A240ES / CW-SC180ES