LG MLP-F8081CL - Electronic Faults and Controls

Service Manual 53
Troubleshooting Guide
1) No cooling operation performed.
Electronic Parts Troubleshooting Guide
YES
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
Is the AC220V
(AC 240 V) between Connector(CN-
outunit)
and of Main
P.C.B
ON/OFF S/W ON
Is the unit operating?
Is the input power
AC220V (AC240V) at COMP
Magnetic coil?
Check the magnetic
contactor of outdoor unit.
Is it Cooling mode?
Room temp, > Set temp?
Is the DC5V at 14
pin of IC1(MICOM)
Replacement ICO2M, RY-Comp
Replacement (MICOM)
Room temp, >set temp
setting
Select the cooling
operation mode.
Check the wiring
diagram.