- 14 -
WIRING DIAGRAM
TROUBLESHOOTING GUIDE
COMPRESSOR
U
（R）
V
（S）
W
（T）
R
BL
R
B
W
W
B
B
B
B
W
B
W(T)
V(S)
U(R)
7
6
5
OR
Y
※
※
REACTOR
FUSE 250V T3.15A
14
MOTOR (FAN)
PUMP
13
EXP.V.
28
31
33
23
22
21
19
8
9
10
PCB(DISPLAY)
PCB
(CONTROLLER)
SENSOR(TEMP., SUCTION)
SENSOR(TEMP., DEFROST)
SENSOR(TEMP., DISCHARGE)
SENSOR(TEMP., OUTDOOR)
SENSOR(TEMP., OUTGOING)
4 WAY V.
DEFROST HEATER
HEATER
SENSOR(TEMP., RETURN)
MODE SW.
RESET SW.
PUMP SW.
:Not available for the model
without defrost heater
ON
OFF
Warning when you fix electric components !
Electric Shock !
Don't touch electrically charged parts, as electric shock may occur even if they are switched off.
WARNING !
Do not touch any part of the electric circuit (including the wiring of thermistor and others), as it has high voltage against the ground.
Pay attention not to damage the insulated wire when you tighten the screw, as the exposed wire may cause electric shock or malfunction.
Do not ground the oscilloscope when you operate. You might destroy it. Also do not touch any metal part of the oscilloscope while operating.
How to release locking terminals(
※
)
Lever
To release the terminals (
※
),
press the locking lever and pull.
Caution
Electric Shock
High Voltage
R
: RED
G
: GREEN
G
R
: GRAY
O
R
: ORANGE
Y
: YELLOW
B
: BLACK
W: WHITE
BL
: BLUE
COLOR OF WIRE
B
W
B
W
R
W
B
GR
G/Y
G/Y
※
※
※
※
※
※
※
※
※
3
4
2
1
TERMINAL
BLOCK
N
L
POWER
1
2
3
Be sure to wait at least 5 min. after turning off the power and to confirm the voltage between the connector pins of pump connector 13 [between white
and black
]
is less than DC10V with a tester before servicing.