LG MLP-F8081CL Service Manual page 54

Troubleshooting Guide
2) Indoor fan does not operate.
Is the DC5V at 20 pin
Is the DC12V at each
NO
terminal of RY1 coil of
SUB PCB ASM?
Replacement IC03M
Is the AC220V (240V)
NO
between "C" and "H" of
SUB P.C.B?
Replacement RY1 of
SUB PCB
Check the motor winding
54 Floor Standing Type Air Conditioner
NO
Is the unit
operating?
YES
NO
of MICOM?
YES
NO
YES
NO
YES
Replacement RY2 of
SUB PCB
ON/OFF S/W ON
NO
Is the DC5V at 21 pin
of MICOM?
YES
Is the DC12V at each NO
terminal of RY2 of SUB
PCB ASM?
YES
NO
Is the AC220V (240V)
between "C" and "M" of
SUB P.C.B?
YES
Replacement RY3 of
SUB PCB
NO
Is the DC5V at 22 pin
of MICOM?
Replacement
YES
MICOM and check
the EVA-Th
Is the DC12V at each ter-
minal of RY3 of SUB
PCB ASM?
YES
Is the AC220V (240V)
between "C" and "L" of
SUB P.C.B?
YES