LG ARUV Series Service Manual page 196

Function
6. Function
1. Basic control .................................................................................................................197
1.1 Normal operation .....................................................................................................197
1.2 Compressor control..................................................................................................197
1.3 Main and sub unit's EEV control ..............................................................................198
1.4 Fan control ...............................................................................................................199
2. Special control ..............................................................................................................200
2.1 Oil return control ......................................................................................................200
2.2 Defrost control..........................................................................................................201
2.3 Oil equalizing control................................................................................................204
2.4 Stopping operation ...................................................................................................207
3. Protection control .........................................................................................................209
3.1 Pressure protection control ......................................................................................209
3.2 Discharge temperature control.................................................................................211
3.3 Inverter protection control ........................................................................................211
3.4 Liquid back control ...................................................................................................212
3.5 Phase detection .......................................................................................................212
3.6 Pressure switch........................................................................................................213
4. Other control .................................................................................................................213
4.1 Initial setup ...............................................................................................................214
4.2 Instant indoor unit checking mode ...........................................................................217
4.3 Emergency operation ...............................................................................................218
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