LG Electronics LSU090HE, LSN090CE, LSU120CE, LSU090CE, LSN180CE, LSN120HE, LSN120CE Table of Contents

Air Conditioner Service Manual
TABLE OF CONTENTS
Safety Precautions	3
Dimensions	9
Symbols Used in this Manual	9
Indoor Unit	9
Outdoor Unit	11
Installation	14
Selection of the Best Location	17
Piping Length and Elevation	18
How to Fix Installation Plate	19
Drill a Hole in the Wall	19
Drain hose junction	19
Flaring work and connection of piping	20
Flaring work	20
Connection of Piping Indoor	21
Connection of the Pipes-Outdoor	26
Connecting the cable between indoor unit and outdoor unit	27
Connect the Cable	27
Checking the drainage and forming the pipings	29
Checking the Drainage	29
Form the Piping	30
AIR PURGING	31
Air purging	31
Air purging with vacuum pump	31
Test Running	34
Operation	35
Function of Controls	35
Display Function	39
Self-diagnosis Function	39
Remote Control Operations	40
Disassembly	41
Indoor Unit	41
Troubleshooting Guide	44
Refrigeration Cycle Diagram	44
2-way, 3-way Valve	45
Cycle Parts	51
Electronic Parts	52
Schematic Diagram	62
Electric Control Device	62
Wiring Diagram	65
Components Location	67
Product Specifications	72
Exploded View	74
Replacement Parts List	78

2Room Air Conditioner