LG Electronics AS-W096URH0/UBH0/UWH0/UMH0 Outdoor Unit does not operate at all, Indoor Outdoor

Troubleshooting Guide

Trouble 7 The Outdoor Unit does not operate at all.

Does the Operating LED of indoor unit blink when Operation's ON?

NO

Is the Connection between indoor power relay Pin ➂ and terminal block No. 1 right?

YES

Is the connection of cable between indoor and outdoor unit right?

YES

Is the voltage of Terminal Block , in outdoor Control Box about AC220V / 240V?

YES

Is the voltage of NF01J ➀, ➁ in outdoor PCB Ass'y about AC220V / 240V when Operation's ON?

YES

Is the Bridge Diode(BD01S) right?

YES

Refer to the self-diagnosis function.

NO

Check the connecting state of connector

NO

Indoor	Outdoor
1(Brown)	1(Brown)
2(Blue)	2(Blue)
3(Green/YL)	3(Green/YL)
4(Red)	4(Red)

NO

Check the Fuse of Outdoor PCB Ass'y.

NO

Check the PTC and RY-PWR.

NO

Check the Bring Diode.

NO

Replace the PCB Ass'y.

Service Manual 75