LG AS-W1863 Series Svc Manual page 67

I 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.
I The Diagnosis Procedure
• Check the condition of connectors
• The condition of P.C.B pattern.
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Only for training and service purposes
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 Outdoor
• Check the condition of connectors.
• The condition of P.C.B pattern.
• The electronic components.
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Troubleshooting Guide
LGE Internal Use Only