Panasonic CW-C180BN, CW-C240SN, CW-A240SN, CW-A180BN Service Manual
CONTENTS
• PRODUCT SPECIFICATIONS ................................................................................................1
• DIMENSIONS ..........................................................................................................................2
• WIRING DIAGRAM............................................................................................................3 ~ 4
• REFRIGERATION CYCLE DIAGRAM.....................................................................................5
• AIR CONDITIONER PERFORMANCE EVALUATION............................................................5
• HOW TO INSTALL.............................................................................................................6 ~ 7
• HOW TO OPERATE.......................................................................................................... 8 ~ 9
• TROUBLESHOOTING GUIDE .............................................................................................. 10
• CARE AND MAINTENANCE .................................................................................................11
• TECHNICAL DATA...............................................................................................................12
• EXPLODED VIEW .........................................................................................................13 ~ 14
• REPLACEMENT PARTS LIST .............................................................................................. 15
• ELECTRONIC CIRCUIT DIAGRAM ...................................................................................... 16
ORDER NO. MAC9604015C3
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CW-C180BN
CW-A180BN
Service Manual
Room Air Conditioners
MODELS : CW-C180BN, CW-C240SN,
CW-A180BN, CW-A240SN.
© 1996 Matsushita Industrial Corp. Sdn. Bhd.
All rights reserved. Unauthorized copying and
distribution is a violation of law.
CW-C240SN
CW-A240SN
CW-C180BN
– 1 –
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general
public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting
to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians.
Any attempt to service or repair the product or products dealt with in this service information by anyone else could result in serious injury
or death.
!
PRODUCT SPECIFICATIONS
MODELS CW-C180BN CW-C240SN
CW-A180BN CW-A240SN
COOLING HEATING COOLING HEATING
CAPACITY (Btu/h) 17,900 – 17,700 22,700 – 22,510 15,690 – 15, 510 15,340 – 14,830 21,140 – 20,630 20,800 – 19,780
(W) 5,250 – 5,200 6,650 – 6,600 4,600 – 4,550 4,500 – 4,350 6,200 – 6,050 6,100 – 5,800
MOISTURE REMOVAL (s/h) 2.9 4.0 2.5
––
3.4
––
(Pints/h) 6.1 8.5 5.3 7.2
AIR CIRCULATION (m
3
/min) 14.0 17.0 14.0 16.0
(Cft/min) 490 600 490 560
COMPRESSOR OUTPUT (W) 1,700 2,200 1,700 2,200
ELECTRICAL Phase Single
DATA
Cycle (Hz) 50
Voltage (V) 240 – 220
Running
Current (A) 11.6 – 11.2 15.2 – 15.4 11.7 – 11.0 9.9 – 8.9 14.8 – 14.6 13.6 – 12.8
Starting
Current (A) 50 60 50 60
Input (W) 2,360 – 2,230 3,100 – 3,050 2,450 – 2,300 1,950 – 1,700 3,150 – 3,050 2,800 – 2,650
CABINET Height (mm) 16 – 7/8" (428) 16 – 7/8" (428) 16 – 7/8" (428) 16 – 7/8" (428)
DIMENSIONS Width (mm) 26" (660) 26" (660) 26" (660) 26" (660)
Depth (mm) 25 – 7/32" (640) 28 – 3/4" (730) 25 – 7/32" (640) 28 – 3/4" (730)
NET WEIGHT (kg) 59 72 59 74
(Ibs) 130 160 130 164
REFRIGERANT (R-22) (g) 980 1,350 1,090 1,030
(oz) 34.6 47.7 38.5 36.4
NOISE LEVEL High Indoor dB (A) 52 – 51 58 – 57 52 – 51 52 – 51 58 – 58 ––
Outdoor dB (A) 60 - 59 67 – 66 60 – 59 61 – 60 68 – 69 ––
Low Indoor dB (A) 49 – 48 54 – 53 49 – 48 48 – 47 54 – 54 ––
Outdoor dB (A) 56 – 55 66 – 63 57 – 56 59 – 58 65 – 65 ––
* Specifications are subject to change without notice for further improvement.
All illustration shown inside caters for models CW-C180BN, CW-A180BN unless stated otherwise
CW-C180BN
– 2 –
Panasonic
Panasonic
DIMENSIONS
CW-C180BN
CW-A180BN
CW-C240SN
CW-A240SN
FRONT VIEW
TOP VIEW
13-25/32"
(350)
J
N
SIDE VIEW
F
C
GGH
I
K
ITEM CW-C240SN, CW-A240SN
A Width 26" (660)
B Height 16 – 7/8" (428)
C Depth 28 – 25/32" (730)
D 26 – 25/32" (680)
E 1 – 31/32" (50)
F 11 – 13/16" (300)
G 2 – 3/64" (75)
I 3/64" (15)
J 10 – 13/16" (288)
K 15 – 11/32" (389.6)
L 12 – 17/32" (318)
M 3 – 5/32" (80)
N 3 – 35/64" (90)
ITEM CW-C180BN, CW-A180BN
A Width 26" (660)
B Height 16 – 7/8" (428)
C Depth 25 – 7/32" (640)
D 23 – 7/32" (590)
E 1 – 31/32" (50)
F 10 – 15/16" (220)
G 3 – 11/32" (92)
H 3 – 1/32" (77)
I 15 – 32" (12)
J 10 – 15/16" (278)
K 1 – 1/16" (27)
L 12 – 17/32" (318)
M 3 – 5/32
" (80)
N 3 – 35/64
" (90)
Unit : (mm)
Unit : (mm)
K
N
N
J
E
I
B
13-25/32"
(350)
2-3/32"
(53)
A
FRONT VIEW
SIDE VIEW
TOP VIEW
M
L
C
F
G
G
2-3/32"
(53)
M
L
A
E
D
D
B
CW-C180BN
– 3 –
CW-C180BN
WIRING DIAGRAM
CW-C180BN
CW-C240SN
Connection CWA92125
BLUE–YELLOW 18.8Ω
YELLOW–ORANGE 6.25Ω
RED–YELLOW 51.5Ω
CWA31244
CAPACITOR
3µF, 400VAC
Resistance of Fan Motor windings and rated Capacitor
CW-C240SN
Connection 2JS442D4AA01
C-R 0.95Ω
C-S 4.39Ω
CAPACITOR
CWA31338
45µF, 370VAC
* Resistance at 20°C of Ambient Temp.
Resistance of Compressor windings and rated Capacitor
CW-C180BN
Connection CWA95263
BLUE–YELLOW 47.9Ω
YELLOW–ORANGE 25.2Ω
RED–YELLOW 103.3Ω
CWA31357
CAPACITOR
3.5µF, 450VAC
Resistance of Fan Motor windings and rated Capacitor
CW-C180BN
Connection 2JS350D6BA02
C-R 0.95Ω
C-S 4.18Ω
CAPACITOR
CWA31504
35µF, 370VAC
* Resistance at 20°C of Ambient Temp.
Resistance of Compressor windings and rated Capacitor
POWER SUPPLY CORD
POWER SUPPLY CORD
1ø, 240–220V, 50Hz
1ø, 240–220V, 50Hz
CAPACITOR
CAPACITOR
MAIN SWITCH
MAIN SWITCH
BROWN
BROWN
1
0
2
3
AIR SWING
AIR SWING
SELECT SWITCH
SELECT SWITCH
AIR SWING MOTOR
AIR SWING MOTOR
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
RED
RED
RED
RED
WHITE
WHITE
BLACK
BLACK
WHITE
WHITE
WHITE
WHITE
YELLOW
YELLOW
YELLOW/GREEN
YELLOW/GREEN
YELLOW/GREEN
YELLOW/GREEN
YELLOW
YELLOW
BLUE
BLUE
BLUE
BLUE
BLACK
BLACK
ORANGE
ORANGE
1
2
R
S
C
FAN MOTOR
FAN MOTOR
COMPRESSOR
COMPRESSOR
THERMOSTAT
THERMOSTAT
RED (RED)
RED (RED)
BLUE (BLU)
BLUE (BLU)
YELLOW (YEL)
YELLOW (YEL)
TRADE MARK
TRADE MARK
THE PARENTHESIZED LETTER IS
INDICATED ON TERMINAL COVER.
INDICATED ON TERMINAL COVER.
COMPRESSOR TERMINAL
COMPRESSOR TERMINAL
FUSE (5A)
FUSE (5A)
P
1
CAPACITOR
CAPACITOR
LOW
LOW
FAN
FAN
HIGH
HIGH
FAN
FAN
HIGH
HIGH
COOL
COOL
LOW
LOW
COOL
COOL
OFF
OFF
POWER SUPPLY CORD
POWER SUPPLY CORD
1 ø , 240– 220V, 50Hz
1 ø , 240– 220V, 50Hz
CAPACITOR
CAPACITOR
CAPACITOR
CAPACITOR
MAIN SWITCH
MAIN SWITCH
BROWN
BROWN
1
0
2
3
AIR SWING
AIR SWING
SELECT SWITCH
SELECT SWITCH
AIR SWING MOTOR
AIR SWING MOTOR
BLUE
BLUE
YELLOW/GREEN
YELLOW/GREEN
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
RED
RED
RED
RED
WHITE
WHITE
WHITE
WHITE
BLACK
BLACK
WHITE
WHITE
WHITE
WHITE
YELLOW
YELLOW
YELLOW/GREEN
YELLOW/GREEN
YELLOW
YELLOW
BLUE
BLUE
BLUE
BLUE
BLACK
BLACK
ORANGE
ORANGE
1
2
R
S
C
FAN MOTOR
FAN MOTOR
COMPRESSOR
COMPRESSOR
THERMOSTAT
THERMOSTAT
(TEMP. CONTROL)
(TEMP.
CONTROL)
THERMOSTAT
THERMOSTAT
(LOW TEMP.)
(LOW
TEMP.)
RED (RED)
RED (RED)
BLUE (BLU)
BLUE (BLU)
YELLOW (YEL)
YELLOW (YEL)
TRADE MARK
TRADE MARK
THE PARENTHESIZED LETTER IS
THE PARENTHESIZED LETTER IS
INDICATED ON TERMINAL COVER.
INDICATED ON TERMINAL COVER.
COMPRESSOR TERMINAL
COMPRESSOR TERMINAL
FUSE (5A)
FUSE (5A)
P
1
LOW
LOW
FAN
FAN
HIGH
HIGH
FAN
FAN
HIGH
HIGH
COOL
COOL
LOW
LOW
COOL
COOL
OFF
OFF
CW-C240SN
CW-C180BN
– 4 –
RED (RED)
RED (RED)
BLUE (BLU)
BLUE (BLU)
YELLOW (YEL)
YELLOW (YEL)
TRADE MARK
TRADE MARK
THE PARENTHESIZED LETTER IS
INDICATED ON TERMINAL COVER.
INDICATED ON TERMINAL COVER.
COMPRESSOR TERMINAL
COMPRESSOR TERMINAL
POWER SUPPLY CORD
POWER SUPPLY CORD
1 ø , 240– 220V, 50Hz
1 ø , 240– 220V, 50Hz
MAIN SWITCH
MAIN SWITCH
BROWN
BROWN
BROWN
BROWN
BLACK
BLACK
BLACK
BLACK
YELLOW
YELLOW
YELLOW/GREEN
YELLOW/GREEN
BLACK
BLACK
BLACK
BLACK
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
BLACK
RED
RED
RED
RED
YELLOW
YELLOW
YELLOW/GREEN
YELLOW/GREEN
ORANGE
ORANGE
10
2
3
AIR SWING
AIR SWING
SELECT
SELECT
SWITCH
SWITCH
AIR SWING
AIR SWING
MOTOR
MOTOR
BLACK
BLACK
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
RED
RED
BLUE
BLUE
BLUE
BLUE
RED
RED
RED
RED
GRAY
GRAY
GRAY
GRAY
FAN
FAN
MOTOR
MOTOR
FUSE
FUSE
(5A)
(5A)
4
2
B A
H
C
L
CAPACITOR
CAPACITOR
CAPACITOR
CAPACITOR
COMPRESSOR
COMPRESSOR
THERMOSTAT
THERMOSTAT
COIL-REVERSING
COIL-REVERSING
VALVE
VALVE
ELECTRIC DEICER
ELECTRIC DEICER
1
2
5
1
P
3
4
6
ZNR
Ry – D
Ry – D
R
C
S
NC
COM
OFF
OFF
LOW
LOW
HIGH
HIGH
HIGH
HIGH
COOL
COOL
HEAT
HEAT
LOW
LOW
FAN
FAN
FAN
FAN
CW-A180BN
Connection CWA95263
BLUE–YELLOW 47.9Ω
YELLOW–ORANGE 25.2Ω
RED–YELLOW 103.3Ω
CWA31357
CAPACITOR
3.5µF, 450VAC
CW-A180BN
Connection 2JS356D6DA01
C-R 0.86Ω
C-S 3.45Ω
CAPACITOR
CWA31506
45µF, 370VAC
* Resistance at 20°C of Ambient Temp.
Resistance of Fan Motor windings and rated Capacitor
Resistance of Compressor windings and rated Capacitor
CW-A240SN
Connection CWA92125
BLUE–YELLOW 18.8Ω
YELLOW–ORANGE 6.3Ω
RED–YELLOW 51.5Ω
CWA31244
CAPACITOR
3µF, 400VAC
CW-A240SN
Connection 2JS442D4AA01
C-R 0.95Ω
C-S 4.39Ω
CAPACITOR
CWA31506
45µF, 370VAC
* Resistance at 20°C of Ambient Temp.
Resistance of Fan Motor windings and rated Capacitor
Resistance of Compressor windings and rated Capacitor
CW-A180BN
CW-A240SN
RED (RED)
BLUE (BLU)
YELLOW (YEL)
TRADE MARK
THE PARENTHESIZED LETTER IS
THE PARENTHESIZED LETTER IS
INDICATED ON TERMINAL COVER.
INDICATED ON TERMINAL COVER.
COMPRESSOR TERMINAL
POWER SUPPLY CORD
POWER SUPPLY CORD
1 ø , 240– 220V, 50Hz
1 ø , 240– 220V, 50Hz
MAIN SWITCH
MAIN SWITCH
BROWN
BROWN
BROWN
BROWN
BLACK
BLACK
BLACK
BLACK
BLACK
BLACKBLACK
YELLOW
BLUE
BLUE
YELLOW/GREEN
BLUE
BLACK
RED
RED
YELLOW
YELLOW
YELLOW/GREEN
YELLOW/GREEN
ORANGE
ORANGE
10
2
3
AIR SWING
SELECT
SWITCH
AIR SWING
MOTOR
BLACK
BLACK
BLUE
BLUE
BLUE
BLUE
BLUE
RED
RED
BLUE
BLUE
BLUE
BLUE
RED
RED
RED
RED
GRAY
GRAY
GRAY
GRAY
BLACK
BLACK
FAN
FAN
MOTOR
MOTOR
FUSE (5A)
4
2
B A
H
C
L
CAPACITOR
CAPACITOR
THERMOSTAT
THERMOSTAT
CAPACITOR
CAPACITOR
COMPRESSOR
COMPRESSOR
THERMOSTAT
THERMOSTAT
COIL-REVERSING
COIL-REVERSING
VALVE
ELECTRIC DEICER
ELECTRIC DEICER
4
4
1
1
P
3
2
S2
S2
S1
S1
ZNR
ZNR
Ry – D
Ry – D
R
C
S
NC
NC
COM
COM
OFF
OFF
LOW
LOW
HIGH
HIGH
HIGH
HIGH
COOL
COOL
HEAT
HEAT
LOW
LOW
FAN
FAN
FAN
FAN
CW-C180BN
– 5 –
REFRIGERATION CYCLE DIAGRAM
2
6
B
C
A
5
D
CW-A180BN
CW-A240SN
ITEM PRESSURE (kg/cm2) TEMP. (°C)
A 15.5 ~ 19.0 55 ~ 70
B 4.0 ~ 4.5 0 ~ 5
C 15.0 ~ 18.5 37 ~ 47
D 15.4 ~ 18.9 45 ~ 55
* Indoor temp. at 21°C (DB), and Outdoor at 7°C (DB), 6°C (WB).
ITEM PRESSURE (kg/cm2) TEMP. (°C)
A 17.5 ~ 21.0 75 ~ 90
B 17.2 ~ 20.7 38 ~ 45
C 5.5 ~ 6.1 7 ~ 15
D 5.3 ~ 5.8 5 ~ 15
* Indoor temp. at 27°C (DB), 19°C (WB) and Outdoor at 35°C , 24°C.
1
4
3
SUCTION & DISCHARGE AIR
CURRENT DETERMINATION REMEDY
TEMPERATURE DIFFERENCE
12°C and over As specified • Nothing wrong • None
12°C and over Higher than specified • Nothing wrong, outdoor temperature • None
is high
• Something is preventing heat • Clean air-filter
radiation at indoor heat-exchanger
Under 12°C Lower than specified • Nothing wrong, outdoor temperature • None
is too low
• Something is preventing heat • Improve heat radiation at outdoor
radiation at outdoor heat-exchanger heat-exchanger
• Leakage of refrigerant • Locate & repair leak
• Refrigerant system is blocked • Flush refrigeration leak
Under 12°C Higher than 150% of specified • Compressor defect • Replace compressor
• Compressor capacitor defect • Replace compressor capacitor
1 Compressor
2 4-Way Valve
3 Evaporator
4 Capillary Tube
5 Strainer
6 Condenser
7 Accumulator
HEATING
COOLING
ITEM PRESSURE (kg/cm2) TEMP. (°C)
A 18.5 ~ 22.0 80 ~ 95
B 18.2 ~ 21.7 44 ~ 52
C 5.7 ~ 6.3 7 ~ 15
D 5.5 ~ 6.0 6 ~ 16
1 Compressor
2 Condenser
3 Strainer
4 Capillary Tube
5 Evaporator
6 Accumulator
CW-C180BN
CW-C240SN
34
2
7
6
C
A
1
B
5
D
HEATING
COOLING
* Note: Room air humidity is relatively higher, the Temp. difference will be smaller.
* Indoor temp. at 27°C (DB), 19°C (WB) and Outdoor at 35°C , 24°C.
SUCTION & DISCHARGE AIR
CURRENT DETERMINATION REMEDY
TEMPERATURE DIFFERENCE
8°C and over As specified Nothing wrong • None
8°C and over Higher than specified Nothing wrong, outdoor temperature is • Improve heat radiation
too high, heat radiation is not efficient
Under 8°C Higher than specified but below Something is preventing heat radiation • Excessive amount of refrigerant
150% of specified • Improve heat radiation
Under 8°C Lower than specified Leakage of refrigerant or refrigerant • Locate repair leak
system is blocked • Flush refrigeration cycle
Under 8°C Higher than 150% of specified Compressor defect or compressor • Replace the compressor or
capacitor defect compressor capacitor
HEATING
AIR CONDITIONER PERFORMANCE EVALUATION
COOLING
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