LG Electronics AS-W126URH1/UBH1/UWH1/UMH1 Precaution in Service or Check, Diagnosis Procedure

Troubleshooting Guide

■Precaution in Service or Check

Even after stopping the operation of product, it takes some time to discharge the remaining electricity of the electrolytic capacitor that was charged. Before starting a checking or repairing job, pull out the plug out of the outlet and make sure that the lamp on the control board outdoor unit is off.

■The Diagnosis Procedure

Check the supplied voltage to product (AC 220V/230V ± 30V).

Check the connecting cable between Indoor and Outdoor.

Check the blinking number of operation indicator

(refer to the self-diagnosis function).

Check the self-diagnosis table

Indoor

•Check the condition of connectors

•The condition of P.C.B pattern.

Outdoor

•Check the condition of connectors.

•The condition of P.C.B pattern.

•The electronic components.

68Room Air Conditioner