LG AS-W096URH0/UBH0/UWH0/UMH0 Service Manual page 68

Troubleshooting Guide
Error
The cause of malfunction
Code
EEPROM Error
12
(EEPROM Check sum Error)
PSC Error
13
(PSC Fault Error)
Comp Phase Current Error
14
(Only 180 Driver Comp Control)
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 condition of connectors
• The condition of P.C.B pattern.
68 Room Air Conditioner
Malfunction indicator
The operating LED01M will be blink-
ing once long-term and twice.
The operating LED01M will be blink-
ing once long-term and 3 times.
The operating LED01M will be blink-
ing once long-term and 4 times.
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
The operating state
Keep operating state.
Keep operating state.
Keep operating state.
Outdoor
• Check the condition of connectors.
• The condition of P.C.B pattern.
• The electronic components.