Table Of Contents - LG LMNH122LRA0 Service Manual

Multi type air conditioner
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Multi type Air Conditioner Service Manual

TABLE OF CONTENTS

Model Number Nomenclature ....................................................................................................................3
Safety Precautions......................................................................................................................................6
Dimensions................................................................................................................................................12
Indoor Unit..............................................................................................................................................12
Outdoor Unit............................................................................................................................................18
Product Specifications .............................................................................................................................19
Installation .................................................................................................................................................24
Select the best location of indoor unit .....................................................................................................24
How to fix ...............................................................................................................................................25
Piping and Drainage of Indoor Unit .........................................................................................................29
Connection of indoor unit piping..............................................................................................................30
Remote Controller Installation.................................................................................................................40
Connecting Pipings and the cable to Outdoor unit..................................................................................42
Checking the Drainage and Pipe forming................................................................................................44
Maximum Length of Pipe and Extra Charge of Refrigerant Charge........................................................47
Piping Connection Size ...........................................................................................................................50
Test Running ...........................................................................................................................................51
Operation ...................................................................................................................................................56
Function of control...................................................................................................................................56
Function of Indoor Unit............................................................................................................................61
Function of Outdoor Unit .........................................................................................................................64
Remote Control Operation ......................................................................................................................65
Control Devices and Function .................................................................................................................73
Simple Central Control ............................................................................................................................73
Term of Each part and Function..............................................................................................................73
Electrical wiring .......................................................................................................................................74
Deluxe Central Control ............................................................................................................................80
Disassembly of the parts (Indoor unit) ...................................................................................................86
Indoor unit ...............................................................................................................................................86
Schematic Diagram...................................................................................................................................89
Electronic Control Device ........................................................................................................................89
Wiring Diagram .......................................................................................................................................94
Components Locations ...........................................................................................................................96
Troubleshooting Guide ...........................................................................................................................101
Refrigeration Cycle Diagram .................................................................................................................101
Self-diagnosis Function.........................................................................................................................104
Cycle Troubleshooting Guide ................................................................................................................105
Electronic Parts Troubleshooting Guide ................................................................................................106
General Information ..............................................................................................................................111
(3-way) Valve ...........................................................................................................................................127
Exploded View & Replacement Parts List ............................................................................................131
Indoor Unit ............................................................................................................................................131
Outdoor Unit .........................................................................................................................................155

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