Table Of Contents - LG LV-B2420CL Service Manual

Table of Contents

Table Of Contents2
Functions3
Remote Controller4
Operation On/Off4
Operation Mode Selection4
Fan Speed Selection4
Product Specifications (Cooling Only)5
Product Specifications (Cooling & Heating)6
Dimensions7
Outdoor Unit8
Refrigeration Cycle Diagram9
Wiring Diagram11
Operation Details13
The Function Of Main Control13
Time Delay Safety Control13
Airflow Direction Control13
Cooling Mode Operation14
Cooling Or Heating Mode With Sleep Mode Auto Operation14
Cooling Mode With The Sleep Mode14
Heating Mode With The Sleep Mode14
Auto Operation15
Auto Operation For Cooling15
Auto Operation For Soft Dry16
Auto Operation For Heating16
1/F Rhythm Louver Operation16
Natural Wind By Chaos Logic17
Graph Of Natural Wind By The Chaos Logis17
Heating Mode Operation18
Hot-Start Control18
Deice Control19
Soft Dry Operation19
Forced Operation20
Protection Of The Evaporator Pipe From Frosting20
Inlet Grille Open20
Test Operation20
Display Function21
Heating Model21
Cooling Model21
Self-Diagnosis Function21
Installation22
Installation Of Indoor, Outdoor Unit22
Selection Of The Best Location22
Piping Length And The Elevation22
Indoor Unit Installation23
Installation On The Ceiling23
Front Of View25
Side Of View25
Installation On The Wall27
Install The Indoor Unit Onto Installation Plate28
Installation On The Floor29
Installation Of Mount Bracket29
After Installing, Reassemble Detached Parts29
Connecting Pipes To The Indoor Unit30
Preparation Of Piping30
Putting Nut On30
Flaring Work30
Connecting The Pipes To The Indoor Unit31
Connecting The Drain Hose31
For The Bottom Side Piping31
Installation On The Wall Or Floor32
Connecting Pipes To The Outdoor Unit33
Checking The Drainage33
Remove The Air Filter33
Check The Drainage33
Connecting Cables Between Indoor Unit And Outdoor Unit34
Connecting Cables To The Indoor Unit34
Clamping Of Cables34
Connecting The Cable To Outdoor Unit35
Form The Pipings36
Air Purging Of The Pipes And Indoor Unit37
Test Running38
Connection Of Power Supply38
Evaluation Of The Performance38
Selection Of The Slide Switch According To Installation Method38
Operation39
Name And Function-Remote Controller39
Disassembly Of The Parts (Indoor Unit)41
2-Way, 3-Way Valve45
2-Way Valve (Liquid Side)45
3-Way Valve (Gas Side Or Liquid Side)45
Pumping Down46
Re-Air Purging47
Balance Refrigerant Of The 2-Way, 3-Way Valves48
Evacuation49
Gas Charging50
After Evacuation50
Cycle Troubleshooting Guide51
Trouble Analysis51
Check Temperature And Pressure Of Refrigeration Cycle51
Electronic Parts Troubleshooting Guide52
The Unit Does Not Operate52
The Indoor Fan Does Not Operate53
Up/Down Air Direction Louver Does Not Operate54
Remote Controller Does Not Operate54
Ineffective Heating55
The Unit Does Not Operate By Forced Operation Switch55
Electronic Control Device56
Main P.c.b Asm56
Display P.c.b Asm56
Schematic Diagram57
Exploded View And Replacement Parts List58
Parts List (Cooling Only Models)59
Parts List (Heat Pump Models)60