LG FMN0760NL Service Manual page 87

The Outdoor Unit does not operate at all.
Trouble 6
Does the Operating LED of indoor unit blink
when Operation's ON?
Is the connection of cable between indoor
and outdoor unit right?
Is the voltage of CN-POWER
door PCB Ass'y about AC220V / 240V
when Operation's ON?
Is the voltage of CN-AC CN-POWER(N) in
outdoor PCB Ass'y about AC220V / 240V?
Is the Bridge Diode right?
Replace the PCB Ass'y.
YES
NO
NO
YES
NO
, in out-
YES
NO
YES
NO
NO
-87-
Refer to the self-diagnosis function.
Indoor Outdoor
1(Brown) 1(Brown)
2(Blue) 2(Blue)
3(Green/YL) 3(Green/YL)
4(Red) 4(Red)
Check the Fuse of Outdoor PCB Ass'y.
Check the PTC and RY-PWR.
Replace the Bridge Diode.