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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 ................................................................................................................................12
Installation .....................................................................................................................................................13
Select the Best Location .........................................................................................................................13
Piping Length and Elevation.....................................................................................................................14
Fixing Installation Plate ............................................................................................................................14
Drill a Hole in the Wall..............................................................................................................................15
Flaring Work.............................................................................................................................................15
Connection of Piping ...............................................................................................................................16
Connecting the Cables.............................................................................................................................22
Checking the Drainage.............................................................................................................................24
Forming the Piping ...................................................................................................................................25
Air Purging ...............................................................................................................................................26
Test Running ............................................................................................................................................28
Functions ......................................................................................................................................................30
Operation ......................................................................................................................................................33
Disassembly ..................................................................................................................................................47
Indoor Unit................................................................................................................................................47
Schematic Diagram.......................................................................................................................................50
Electric Control device..............................................................................................................................50
Wiring Diagram.........................................................................................................................................52
Components Location ..............................................................................................................................54
Troubleshooting Guide.................................................................................................................................57
Refrigeration Cycle Diagram ....................................................................................................................57
Pipe Length and the Elevation .................................................................................................................58
2-way, 3-way Valve ...................................................................................................................................59
Cycle Parts...............................................................................................................................................66
Self-diagnosis Function............................................................................................................................67
Electronic Parts ........................................................................................................................................69
Exploded View ..............................................................................................................................................80
Indoor Unit................................................................................................................................................80
Outdoor Unit.............................................................................................................................................81
Replacement Parts List ................................................................................................................................82
Indoor .......................................................................................................................................................82
Outdoor ....................................................................................................................................................84