2Room Air Conditioner
Air Conditioner Service Manual
TABLE OF CONTENTS
LG Model Name...............................................................................................................................................3
Safety Precautions..........................................................................................................................................4
Dimensions .....................................................................................................................................................8
Symbols used in this Manual......................................................................................................................8
Indoor Unit..................................................................................................................................................8
Outdoor Unit...............................................................................................................................................9
Product Specifications ............................................................................................................................... .11
Installation.....................................................................................................................................................12
Select the Best Location .........................................................................................................................12
Piping Length and Elevation.....................................................................................................................12
Preparing Work for Installation.................................................................................................................13
Fixing the Indoor Unit...............................................................................................................................14
Drill a Hole in the wall...............................................................................................................................14
Flaring Work.............................................................................................................................................15
Connecting the Pipings ............................................................................................................................16
Connecting the Cables to the Indoor Unit ................................................................................................19
Connecting the Cables to the Outdoor Unit..............................................................................................20
Checking the Drainage.............................................................................................................................21
Forming the Piping...................................................................................................................................21
Air Purging ...............................................................................................................................................22
Air Purging with Vacuum Pump................................................................................................................22
Front Panel Assembly..............................................................................................................................24
Test Running............................................................................................................................................25
Operation ......................................................................................................................................................26
Function of Controls.................................................................................................................................26
Display Function.......................................................................................................................................33
Self-diagnosis Function............................................................................................................................34
Remote Control Operations......................................................................................................................35
Disassembly..................................................................................................................................................36
Indoor Unit................................................................................................................................................36
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...............................................................................................................................................48
Electronic Parts........................................................................................................................................49
Exploded View ..............................................................................................................................................56
Indoor Unit...............................................................................................................................................56
Outdoor Unit............................................................................................................................................57
Replacement Parts List ................................................................................................................................59
Indoor......................................................................................................................................................59
Outdoor ....................................................................................................................................................60