LG AMNH12GD4L0 User Manual

2 Multi type Air Conditioner
Multi type Air Conditioner Service Manual
TABLE OF CONTENTS
Model Number Nomenclature ....................................................................................................................3
Symbols Used in this Manual ...................................................................................................................5
Safety Precautions...............................................................................................................................
.......6
Dimensions...............................................................................................................................
.................12
Indoor Unit.....................................................................................................................
.........................12
Outdoor Unit ....................................................................................................................
.......................21
Product Specifications ............................................................................................................................22
Installation ...............................................................................................................................
..................34
Select the best location of indoor unit ..............................................................................................
......34
How to fix .......................................................................................................................
........................37
Piping and Drainage of Indoor Unit ........................................................................................................45
Connection of indoor unit piping.............................................................................................................46
Remote Controller Installation ................................................................................................................69
Connecting Pipings and the cable to Outdoor unit .................................................................................71
Checking the Drainage and Pipe forming...............................................................................................74
Maximum Length of Pipe and Extra Charge of Refrigerant Charge.......................................................79
Test Running ..........................................................................................................................................85
System Layout and Piping Length..........................................................................................................88
Installation ..............................................................................................................................................89
Installation of The Main Unit...................................................................................................................90
Connection of Piping ..............................................................................................................................91
Connection of Wiring ..............................................................................................................................92
Operation ..................................................................................................................................................93
Function of control..................................................................................................................................93
Function of Indoor Unit ...........................................................................................................................98
Function of Outdoor Unit ......................................................................................................................104
Remote Control Operation ...................................................................................................................105
Control Devices and Function ...............................................................................................................114
Simple Central Control .........................................................................................................................114
Term of Each part and Function ...........................................................................................................114
Electrical wiring ....................................................................................................................................115
Deluxe Central Control .........................................................................................................................121
Disassembly of the parts (Indoor unit) .................................................................................................127
Indoor unit ............................................................................................................................................127
Schematic Diagram.................................................................................................................................142
Electronic Control Device .....................................................................................................................142
Wiring Diagram.....................................................................................................................................154
Components Locations.........................................................................................................................160
Troubleshooting Guide...........................................................................................................................179
Refrigeration Cycle Diagram ................................................................................................................179
Self-diagnosis Function ........................................................................................................................186
Cycle Troubleshooting Guide................................................................................................................187
Electronic Parts Troubleshooting Guide ...............................................................................................188
General Information..............................................................................................................................193
(3-way) Valve ...........................................................................................................................................209
Exploded View & Replacement Parts List ............................................................................................213
Indoor Unit ...........................................................................................................................................213
Outdoor Unit ........................................................................................................................................257

LG AMNH12GD4L0 Specifications

General

Brand	LG
Model	AMNH12GD4L0
Category	Air Conditioner
Language	English