Table Of Contents - LG FM15AH UL3 Svc Manual

Part 1 General Information .........................................................................................................2
1. Safety Precautions........................................................................................................3
2. Model Line Up................................................................................................................6
3. Nomenclature ..............................................................................................................11
Part 2 Functions & Controls.....................................................................................................13
1. List of Functions & Controls......................................................................................14
2. Air Flow .......................................................................................................................16
3. Air Purifying.................................................................................................................18
4. Installation Functions .................................................................................................19
5. Reliability .....................................................................................................................23
6. Convenience Functions & Controls .........................................................................24
7. Special Function & KIT ...............................................................................................36
Part 3 Control logic ....................................................................................................................39
1. Compressor .................................................................................................................40
2. Step(frequency) control..............................................................................................42
3. Reversing valve operaton ..........................................................................................43
4. Discharge pipe control ...............................................................................................44
5. Input Current Control..................................................................................................45
6. Outdoor Fan Control...................................................................................................46
7. Defrost Control............................................................................................................47
8. LEV Control .................................................................................................................48
9. Oil restoration operation ............................................................................................50
10. Compressor warm-up control logic ........................................................................50
11. Heat sink control .......................................................................................................51
Part 4 Test Run ..........................................................................................................................52
1. Check before Test Run ..............................................................................................53
2. Test Run Flow chart ...................................................................................................54
3. Test Runing..................................................................................................................55
Part 5 Trouble Shooting Guide ...............................................................................................58
1. Self-diagnosis Function ......................................................................................59
2. Pump Down ..........................................................................................................63
3. Evacuation............................................................................................................64
4. Gas Charging .......................................................................................................65
5. Cycle Part .............................................................................................................66
6. Electronic Parts....................................................................................................67
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Only for training and service purposes
Air Conditioner Service Manual
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