LG LWC0961AHG Service Manual ▷ View online
—21—
Is setting
Temp. set lower than Room
Temp.-0.5
°
C?
Is the voltage No.10
of IC01M 0V?
• Exchange IC01M.
• Select the setting Temp. to lower Number.
• Wait 3 Minutes.
Is the Unit for 3 minutes
delay?
• Exchange MAIN
PCB Ass'y.
PCB Ass'y.
Is the voltage N0.7 of
IC01M DC 5V?
• Check the RY-COMP.
• Check the wiring
Diagram.
Diagram.
NO
NO
NO
YES
YES
YES
YES
Is the wire connection of
RY-COMP all right?
• Check the RY-COMP.
• Connect LEAD Wire to
RY-COMP again.
RY-COMP again.
NO
YES
NO
Possible Trouble 2
The compressor does not operate.
Possible Trouble 3
The compressor always operate.
—22—
• Exchange IC01M.
• Exchange IC01M.
Is the voltage NO.1 or 2 or 4
of IC01M DC 5V?
Is the voltage NO.13 or 15 or 16
of IC01M 0V?
• Check the RY-Hi or
RY-Med or RY-Lo.
• Check the wiring diagram.
NO
NO
YES
YES
• Check the PCB pattern.
Is the voltage of Battery
about over 2.3V?
• Exchange Receiver Ass'y.
Is the connection of
CN-DISP all right?
Is the voltage No.16
of CN-DISP on Main PCB
Ass'y DC 5V?
• Exchange the battery.
• Check the PCB pattern.
• Connect connector to
CN-DISP exactly.
CN-DISP exactly.
NO
NO
NO
YES
YES
YES
Possible Trouble 4
FAN does not operate.
Possible Trouble 5
Remote controller does not operate.
—23—
NO
NO
NO
NO
YES
YES
YES
Is the IC01G all right?
Is the connection of
CN-DISP all right?
• Exchange the display
PCB Ass'y.
PCB Ass'y.
• Exchange IC01G.
• Exchange Q01G,
Q02G, Q03G, Q04G
• Connect connector
to CN-DISP exactly.
to CN-DISP exactly.
Does the Q01G,
Q02G, Q03G, Q04G operate normally
on main PCB Ass'y?
Possible Trouble 6
It displays abnormally on display PCB Ass’y.
—24—
ROOM AIR CONDITIONER VOLTAGE LIMITS
Check voltage at outlet. Correct if none.
Check voltage to rotary switch. If none, check
power supply cord. Replace cord if circuit is open.
Check switch continuity. Refer to wiring diagram
for terminal identification. Replace switch if
defective.
Connect wire. Refer to wiring diagram for terminal
identification. Repair or replace loose terminal.
Test capacitor.
Replace if not within ±10% of manufacturer's
rating. Replace if shorted, open, or damaged.
Fan blade hitting shroud or blower wheel hitting
scroll. Realign assembly.
Units using slinger ring for condenser fan must
have
1
/
4
to
5
/
16
inch clearance to the base. If it hits
the base, shim up the bottom of the fan
motor with mounting screw(s).
Check fan motor bearings; if motor shaft will not
rotate, replace the motor.
Check voltage. If not within limits, call an
electrician.
Test capacitor.
Check bearings. Does the fan blade rotate freely?
If not, replace fan motor.
Pay attention to any change from high speed to
low speed. If the speed does not change, replace
the motor.
No power
Power supply cord
Rotary switch
Wire disconnected or
connection loose
Capacitor (Discharge
capacitor before testing.)
Will not rotate
Revolves on overload.
Fan motor will not run.
Fan motor runs
intermittently
COMPLAINT
CAUSE
REMEDY
NAME PLATE RATING
MINIMUM
MAXIMUM
220-240V~ ±10%
198V
264V
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