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LG ABUW426KSA3 - User Manual

LG ABUW426KSA3
73 pages
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LG
Ceiling Duct Type
Air Conditioner
SERVICE MANUAL
LG
CAUTION
website http://www.lgservice.com
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
MODELS: ABNW366KSA1 ABUW366KSA1
ABNW426KSA1 ABUW426KSA1
ABNW486KSA1 ABUW486KSA1
ABNW606LTA1 ABUW606LTA1
ABNW366KSA3 ABUW366KSA3
ABNW426KSA3 ABUW426KSA3
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Summary

Safety Precautions

Installation Safety

Safety measures for electrical installation and unit handling.

Operational Safety Precautions

Safety guidelines for operating the air conditioner, covering power and environment.

Model Number Nomenclature

Product Specifications (Cooling & Heating)

Dimensions

Indoor Unit Dimensions

Dimensional drawings and key measurements for indoor air conditioner units.

Outdoor Unit Dimensions (ABUW366 KSA1;KSA3)

Outdoor Unit Dimensions (ABUW426 KSA1;KSA3;KSA1)

Outdoor Unit Dimensions (ABUW606 LTA1)

Refrigeration Cycle Diagrams

Standard Model Diagrams

Visual representation of refrigerant flow for common model series.

Refrigeration Cycle Diagram (ABUW606 LTA1)

Wiring Diagrams

Indoor Unit Wiring Diagram

Electrical connection diagram and component layout for the indoor unit.

Outdoor Unit Wiring Diagram (ABUW366 KSA1;KSA3)

Outdoor Unit Wiring Diagram (ABUW426 KSA1 Series)

Outdoor Unit Wiring Diagram (ABUW606 LTA1)

Electronic Control Device - Main PCB

Indoor Unit Functions

Remote Controller Functions

Operation Details - Main Control

Operation Details - Heating and Defrost

Operation Details - Self-Diagnosis

Installation of Indoor, Outdoor Units

Location Selection

Criteria for choosing the optimal installation location for both units.

Piping and Elevation Guidelines

Indoor Unit Installation Methods

Drain Piping and Insulation Requirements

Remote Control Installation Procedures

Refrigerant Piping Preparation

Electrical Wiring Procedures

Pipe Bending and Brazing Techniques

Connecting Pipes and Checking Drainage

Connecting Pipes to Outdoor Unit

Steps for connecting refrigerant pipes to the outdoor unit.

Checking the Drainage System

Procedure to verify proper water drainage from the indoor unit.

Cable Connections - Indoor Unit

Cable Connections - Outdoor Unit

Piping Formation and Long Pipe Settings

Air Purging Procedure

Control System Features

Group Control Configuration

How to configure multiple units for group operation.

Two Thermistor System Setup

Options for selecting thermistor sensing modes for temperature control.

Cycle Troubleshooting Guide

Self-Diagnosis Function and Error Codes

Understanding error codes indicated by LEDs and remote controller display.

Indoor Unit Error Codes

List and description of error codes specific to the indoor unit.

Outdoor Unit Error Codes

List and description of error codes specific to the outdoor unit.

Electronic Parts Troubleshooting - Product Failure

Electronic Parts Troubleshooting - Fan;Compressor Failure

Electronic Parts Troubleshooting - Indoor Fan Failure

Outdoor Error Indicators - DC Peak & Pressure Errors

Outdoor Error Indicators - Sensor & Communication Errors

Specific Sensor Error Diagnosis

Communication Error Troubleshooting

Drain Pump and Float Switch Error Diagnosis

Inter-Unit Communication Troubleshooting

DC Peak and Current Troubleshooting

Max Current and C;T Circuit Troubleshooting

DC Link Voltage Troubleshooting

Pressure Switch and Input Voltage Troubleshooting

Compressor Position and PSC Fault Troubleshooting

High Discharge Pipe Temperature Troubleshooting

Sensor and EEPROM Troubleshooting

High Condenser;Heat Sink Temperature Errors

Exploded View - Indoor Unit

Indoor Unit Parts List

List of part numbers and descriptions for indoor unit components.

Exploded View - Outdoor Units (ABUW426 KSA1 Series)

Parts List (ABUW426 KSA1;KSA3;KSA1)

List of part numbers and descriptions for specific outdoor unit models.

Exploded View - Outdoor Unit (ABUW366 KSA1;KSA3)

Parts List (ABUW366 KSA1;KSA3)

List of part numbers and descriptions for ABUW366KSA1/KSA3 outdoor units.

Exploded View - ABUW606 LTA1 Outdoor Unit

Parts List (ABUW606 LTA1)

List of part numbers and descriptions for the ABUW606LTA1 outdoor unit.

LG ABUW426KSA3 Specifications

General IconGeneral
BrandLG
ModelABUW426KSA3
CategoryAir Conditioner
LanguageEnglish

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