LG MULTI V Service Manual page 88

Trouble shooting guide
1. The phenomena from main component failure ..............................89
2. Checking Method for Key Components ..........................................90
2.1 Compressor ........................................................................................90
2.2 Fan Motor ............................................................................................91
2.3 Electronic Expansion Valve...............................................................92
2.4 Inverter IGBTM Checking Method.....................................................95
2.5 Pressure Sensor(High/Low Pressure Sensor) ......................................96
2.6 Outdoor Fan .............................................................................................96
2.7 4 way Valve...............................................................................................97
2.8 Temperature Sensor ................................................................................98
2.9 Fan lock and Fan IPM Check ...................................................................98
3. Self-diagnosis function ...............................................................100
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