2 Room Air Conditioner
Air Conditioner Service Manual
TABLE OF CONTENTS
LG Model Name ...............................................................................................................................................3
Safety Precautions..........................................................................................................................................5
Dimensions...............................................................................................................................
.....................
10
Symbols Used in this Manual........................................................................................................
...........10
Indoor Unit.....................................................................................................................
...........................10
Outdoor Unit....................................................................................................................
.........................11
Product Specifications ...............................................................................................................................
..
14
Installation ...............................................................................................................................
......................
16
Selection of the Best Location.....................................................................................................
.............16
Piping Length and Elevation.....................................................................................................................16
How to Fix Installation Plate.....................................................................................................................17
Drill a Hole in the Wall ..............................................................................................................................17
Drain hose junction...................................................................................................................................17
Flaring work and connection of piping .......................................................................................................18
Flaring work..............................................................................................................................................18
Connection of Piping Indoor.....................................................................................................................18
Connection of the Pipes-Outdoor.............................................................................................................22
Connecting the cable between indoor unit and outdoor unit ...................................................................23
Connect the Cable to the Indoor Unit.......................................................................................................23
Connect the Cable to the Outdoor Unit ....................................................................................................24
Checking the drainage and forming the pipings........................................................................................25
Checking the Drainage.............................................................................................................................25
Form the Piping........................................................................................................................................25
AIR PURGING ................................................................................................................................................26
Air purging................................................................................................................................................26
Air purging with vacuum pump .................................................................................................................26
Test Running .................................................................................................................................................28
Operation .......................................................................................................................................................29
Function of Controls .................................................................................................................................29
Display Function ......................................................................................................................................33
Self-diagnosis Function............................................................................................................................33
Remote Control Operations......................................................................................................................34
Disassembly ..................................................................................................................................................35
Indoor Unit................................................................................................................................................35
Schematic Diagram.......................................................................................................................................38
Electric Control Device.............................................................................................................................38
Wiring Diagram.........................................................................................................................................39
Components Location ..............................................................................................................................40
Troubleshooting Guide .................................................................................................................................42
Refrigeration Cycle Diagram ....................................................................................................................42
2-way, 3-way Valve .................................................................................................................................43
Cycle Parts...............................................................................................................................................49
Electronic Parts ........................................................................................................................................50
Exploded View...............................................................................................................................................57
Replacement Parts List ................................................................................................................................62
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