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Only training and service purposes.

Function

1. Basic control ...................................................................................................................15

1.1 Normal operation .......................................................................................................15

1.2 Compressor control....................................................................................................15

1.3 Master and slave unit's EEV control ..........................................................................16

2. Special control ................................................................................................................17

2.1 Oil return control ........................................................................................................17

2.2 Defrost control............................................................................................................19

2.3 Stop operation............................................................................................................20

3. Protection control ...........................................................................................................21

3.1 Pressure protection control ........................................................................................21

3.2 Discharge temperature control...................................................................................22

3.3 Inverter protection control ..........................................................................................22

3.4 Phase detection .........................................................................................................22

3.5 Pressure switch..........................................................................................................22

4. Other control ...................................................................................................................23

4.1 Initial setup.................................................................................................................23

4.2 Pump Down ...............................................................................................................26

4.3 Night Low Noise Function ..........................................................................................27

4.4 Vacuum Mode ............................................................................................................28

4.5 Static pressure compensation mode..........................................................................28

4.6 Cool & Heat selector ..................................................................................................29

4.7 Cycle Data View.........................................................................................................30

4.8 Refrigerant noise reduction mode..............................................................................31

Function

LG MULTI V M ARNU07GTU 4 Series User Manual

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