2 Room 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.....................................................................................................................13
Fixing Installation Plate ............................................................................................................................14
Drill a Hole in the Wall ..............................................................................................................................14
Flaring Work .............................................................................................................................................15
Connecting the Piping ..............................................................................................................................16
Connecting the Cables to the Indoor Unit ................................................................................................22
Connecting the Cables to the Outdoor Unit..............................................................................................23
Checking the Drainage.............................................................................................................................24
Forming the Piping ...................................................................................................................................24
Air Purging ...............................................................................................................................................25
Air Purging with Vacuum Pump................................................................................................................25
Test Running ............................................................................................................................................27
Operation ......................................................................................................................................................28
Function of Controls .................................................................................................................................28
Display Function ......................................................................................................................................35
Self-diagnosis Function ............................................................................................................................35
Remote Control Operations......................................................................................................................36
Disassembly ..................................................................................................................................................37
Indoor Unit................................................................................................................................................37
Schematic Diagram.......................................................................................................................................40
Electric Control Device .............................................................................................................................40
Wiring Diagram.........................................................................................................................................41
Components Location ..............................................................................................................................42
Troubleshooting Guide .................................................................................................................................44
Refrigeration Cycle Diagram ....................................................................................................................44
2-way, 3-way Valve .................................................................................................................................45
Cycle Parts ...............................................................................................................................................50
Electronic Parts ........................................................................................................................................51
Exploded View...............................................................................................................................................58
Replacement Parts List ................................................................................................................................60