2 Room Air Conditioner
Air Conditioner Service Manual
TABLE OF CONTENTS
LG Model Name...............................................................................................................................................3
Safety Precautions..........................................................................................................................................5
Dimensions .....................................................................................................................................................9
Symbols Used in this Manual.....................................................................................................................9
Indoor Unit..................................................................................................................................................9
Outdoor Unit.............................................................................................................................................10
Product Specifications ................................................................................................................................12
Installation .....................................................................................................................................................14
Select the Best Location .........................................................................................................................14
Piping Length and Elevation.....................................................................................................................14
How to Fix Installation Plate.....................................................................................................................15
Drill a Hole in the Wall..............................................................................................................................15
Installation Instructions of Telephone Control(Optional)...........................................................................15
Flaring Work.............................................................................................................................................16
Connection of Piping Indoor.....................................................................................................................17
Connection of the Pipes-Outdoor.............................................................................................................20
Connect the Cable to the Indoor Unit.......................................................................................................21
Connect the Cable to the Outdoor Unit....................................................................................................22
Checking the Drainage.............................................................................................................................23
Form the Piping........................................................................................................................................23
Air Purging ...............................................................................................................................................24
Air Purging with Vacuum Pump................................................................................................................24
Test Running ............................................................................................................................................26
Functions ......................................................................................................................................................27
Operation ......................................................................................................................................................30
Disassembly ..................................................................................................................................................45
Indoor Unit................................................................................................................................................45
Schematic Diagram.......................................................................................................................................48
Electric Control device..............................................................................................................................48
Wiring Diagram.........................................................................................................................................51
Components Location ..............................................................................................................................53
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 ....................................................................................................................................................83
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