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LG LS-H0766KA2 - User Manual

LG LS-H0766KA2
66 pages
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LG
Room Air Conditioner
SERVICE MANUAL
LG
MODELS: AS-H0766KA2 LS-H0766KA2
AS-H0966KA2 LS-C0966KA2
AS-H126RKA2 LS-H0966KA2
AS-H186TKA2 LS-C126RKA2
LS-H246TKA2 LS-H126RKA2
CAUTION
website http://biz.LGservice.com
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
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Summary

LG Model Name

Producing Center and Refrigerant Codes

Defines model codes for manufacturing location and refrigerant type.

Product Type Codes

Defines model codes for product type (cooling only, heat pump, etc.).

Capacity Codes

Defines model codes for cooling/heating capacity in Btu/h.

Electric Range Codes

Defines model codes for voltage and frequency ranges.

Chassis Codes

Defines model codes for chassis types used in the unit.

Look Codes

Defines model codes for aesthetic styles or finishes.

Function Codes

Defines model codes for specific operating functions.

Serial Number Codes

Defines model codes for serial number ranges.

Safety Precautions

Installation Safety Guidelines

Safety guidelines for unit installation, including warnings and cautions.

Operation Safety Guidelines

Safety guidelines for operating and cleaning the air conditioner.

Dimensions

Symbols Used in Manual

Explains symbols used throughout the manual for warnings and notices.

Indoor Unit Dimensions

Provides dimensions and diagrams for the indoor unit.

Outdoor Unit Dimensions

Provides dimensions and diagrams for the outdoor unit.

Product Specifications

Installation Procedures

Location Selection and Piping

Guidelines for choosing the optimal installation location and piping.

Mounting and Hole Drilling

Steps for securely mounting the installation plate and drilling holes.

Drain Hose Connection

Guidance on connecting the drain hose correctly.

Piping Work and Connection

Flaring and Pipe Connection Steps

Procedure for creating flare connections on refrigerant pipes.

Indoor Unit Piping Connection

Guide for connecting refrigerant piping to the indoor unit.

Outdoor Unit Piping Connection

Guide for connecting refrigerant piping to the outdoor unit.

Cable Connection

Indoor Unit Cabling

Steps for wiring the indoor unit.

Outdoor Unit Cabling

Steps for wiring the outdoor unit.

Power and Connecting Cable Specifications

Details power cord and connecting cable requirements.

Drainage and Piping Formation

Drainage Check Procedure

Procedure to verify proper drainage of the indoor unit.

Piping Insulation and Formation

Steps for insulating and securing refrigerant pipes.

Air Purging and Evacuation

Air Purging Procedure

Details the procedure for purging air and moisture from the system.

Leak Testing Methods

Using soap water for leak testing during air purging.

Evacuation Process

Procedure for evacuating the refrigerant system.

Test Running and Pump Down

Unit Performance Evaluation

How to check system performance and refrigerant charge.

Pump Down Procedure

Procedure for collecting refrigerant when relocating or servicing.

Operation Modes

Control Functions

Explains unit controls, indicators, and modes like Cooling, Dehumidification, Heating, and Defrost.

Advanced Operation Features

Covers fan speed, timers, special modes (Jet Cool, Chaos), and manual operation.

Operational States and Alerts

Details test operation, auto restart, frost protection, and buzzer sounds.

Display and Self-Diagnosis

Display Indicators

Explains display indicators for heating and cooling modes.

Self-diagnosis Function

Details error codes and check points for self-diagnosis.

Remote Control Operations

Remote Control Button Functions

Explains the functions of various buttons on the remote control.

Operation Sequence

Describes the sequence of button presses for unit operation.

Disassembly Procedures

Indoor Unit Disassembly

Instructions for disassembling the indoor unit, including grille removal.

Component Removal Steps

Steps to remove control box, discharge grille, evaporator, motor cover, and fan.

Schematic and Wiring Diagrams

Electric Control Device Schematic

Electrical schematic for the control device, including Heat Pump models.

Wiring Diagrams

Wiring diagrams for indoor and outdoor units.

Component Locations

Main PCB Assembly Layout

Location of components on the main PCB assembly (top and bottom views).

Display Assembly Layout

Component layout for the display assembly.

Troubleshooting Guide

Refrigeration Cycle and Valve Operation

Diagrams and operation of refrigeration cycle and service valves.

Refrigerant Handling Procedures

Covers pumping down, balancing, evacuation, and gas charging.

Troubleshooting Common Issues

Addresses issues with electronic parts, remote control, fans, and heating.

Exploded Views

Indoor Unit Components

Exploded view illustrating indoor unit parts.

Outdoor Unit Components

Exploded views illustrating outdoor unit parts for different models.

Replacement Parts List

Indoor Parts List

List of replacement parts for the indoor unit.

Outdoor Parts List

List of replacement parts for the outdoor unit.

Summary

LG Model Name

Producing Center and Refrigerant Codes

Defines model codes for manufacturing location and refrigerant type.

Product Type Codes

Defines model codes for product type (cooling only, heat pump, etc.).

Capacity Codes

Defines model codes for cooling/heating capacity in Btu/h.

Electric Range Codes

Defines model codes for voltage and frequency ranges.

Chassis Codes

Defines model codes for chassis types used in the unit.

Look Codes

Defines model codes for aesthetic styles or finishes.

Function Codes

Defines model codes for specific operating functions.

Serial Number Codes

Defines model codes for serial number ranges.

Safety Precautions

Installation Safety Guidelines

Safety guidelines for unit installation, including warnings and cautions.

Operation Safety Guidelines

Safety guidelines for operating and cleaning the air conditioner.

Dimensions

Symbols Used in Manual

Explains symbols used throughout the manual for warnings and notices.

Indoor Unit Dimensions

Provides dimensions and diagrams for the indoor unit.

Outdoor Unit Dimensions

Provides dimensions and diagrams for the outdoor unit.

Product Specifications

Installation Procedures

Location Selection and Piping

Guidelines for choosing the optimal installation location and piping.

Mounting and Hole Drilling

Steps for securely mounting the installation plate and drilling holes.

Drain Hose Connection

Guidance on connecting the drain hose correctly.

Piping Work and Connection

Flaring and Pipe Connection Steps

Procedure for creating flare connections on refrigerant pipes.

Indoor Unit Piping Connection

Guide for connecting refrigerant piping to the indoor unit.

Outdoor Unit Piping Connection

Guide for connecting refrigerant piping to the outdoor unit.

Cable Connection

Indoor Unit Cabling

Steps for wiring the indoor unit.

Outdoor Unit Cabling

Steps for wiring the outdoor unit.

Power and Connecting Cable Specifications

Details power cord and connecting cable requirements.

Drainage and Piping Formation

Drainage Check Procedure

Procedure to verify proper drainage of the indoor unit.

Piping Insulation and Formation

Steps for insulating and securing refrigerant pipes.

Air Purging and Evacuation

Air Purging Procedure

Details the procedure for purging air and moisture from the system.

Leak Testing Methods

Using soap water for leak testing during air purging.

Evacuation Process

Procedure for evacuating the refrigerant system.

Test Running and Pump Down

Unit Performance Evaluation

How to check system performance and refrigerant charge.

Pump Down Procedure

Procedure for collecting refrigerant when relocating or servicing.

Operation Modes

Control Functions

Explains unit controls, indicators, and modes like Cooling, Dehumidification, Heating, and Defrost.

Advanced Operation Features

Covers fan speed, timers, special modes (Jet Cool, Chaos), and manual operation.

Operational States and Alerts

Details test operation, auto restart, frost protection, and buzzer sounds.

Display and Self-Diagnosis

Display Indicators

Explains display indicators for heating and cooling modes.

Self-diagnosis Function

Details error codes and check points for self-diagnosis.

Remote Control Operations

Remote Control Button Functions

Explains the functions of various buttons on the remote control.

Operation Sequence

Describes the sequence of button presses for unit operation.

Disassembly Procedures

Indoor Unit Disassembly

Instructions for disassembling the indoor unit, including grille removal.

Component Removal Steps

Steps to remove control box, discharge grille, evaporator, motor cover, and fan.

Schematic and Wiring Diagrams

Electric Control Device Schematic

Electrical schematic for the control device, including Heat Pump models.

Wiring Diagrams

Wiring diagrams for indoor and outdoor units.

Component Locations

Main PCB Assembly Layout

Location of components on the main PCB assembly (top and bottom views).

Display Assembly Layout

Component layout for the display assembly.

Troubleshooting Guide

Refrigeration Cycle and Valve Operation

Diagrams and operation of refrigeration cycle and service valves.

Refrigerant Handling Procedures

Covers pumping down, balancing, evacuation, and gas charging.

Troubleshooting Common Issues

Addresses issues with electronic parts, remote control, fans, and heating.

Exploded Views

Indoor Unit Components

Exploded view illustrating indoor unit parts.

Outdoor Unit Components

Exploded views illustrating outdoor unit parts for different models.

Replacement Parts List

Indoor Parts List

List of replacement parts for the indoor unit.

Outdoor Parts List

List of replacement parts for the outdoor unit.

LG LS-H0766KA2 Specifications

General IconGeneral
RefrigerantR410A
Power Supply220-240V, 50Hz
TypeSplit System
Noise Level50 dB
Noise Level (Outdoor)50 dB(A)

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