LG MLP-F8081CL - Page 54

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