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LG ABNW366KSA1 - User Manual

LG ABNW366KSA1
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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

LG Ceiling Duct Type Air Conditioner Service Manual

Safety Precautions

Essential safety guidelines to prevent injury and property damage during installation and operation.

Installation

Safety guidelines related to installing the air conditioner unit.

Operational

Safety guidelines for operating the air conditioner unit correctly and safely.

Model Number Nomenclature

Product Specifications (cooling & Heating)

Dimensions

Indoor Unit Dimensions

Detailed physical dimensions and measurements for the indoor unit.

Outdoor Unit Dimensions

Detailed physical dimensions and measurements for the outdoor unit.

Refrigeration Cycle Diagram

AB-W366 KSA1; AB-W366 KSA3 Refrigeration Cycle

Diagram illustrating the refrigeration cycle for specific models.

AB-W606 LTA1 Refrigeration Cycle

Diagram illustrating the refrigeration cycle for a specific model.

Wiring Diagram

Indoor Unit Wiring Diagram

Electrical wiring layout and connections for the indoor unit.

Outdoor Unit Wiring Diagram

Electrical wiring layout and connections for the outdoor unit.

Electronic control device

MAIN P.C.B ASM

Details and layout of the main Printed Circuit Board Assembly.

Functions

Indoor Unit Functions

Features and operational functions of the indoor unit.

Remote Controller Functions

Features and operational functions of the remote controller.

Operation Details

Main Control Functions

Explanation of primary control functions and their operations.

Heating Mode Operation

Operation details specific to the heating mode.

Defrost Control

Explanation of the defrost control mechanism and its operation.

Installation of Indoor, Outdoor Unit

Indoor Unit Installation Guidelines

Guidelines for selecting the best location and installing the indoor unit.

Piping Length and Elevation Requirements

Requirements for piping length and elevation differences between units.

Indoor Unit Installation Steps

Step-by-step process for the installation of the indoor unit.

Drain Piping and Gradient Cautions

Crucial cautions for unit installation and proper drain piping.

Insulation and Other Installation Aspects

Requirements for insulation and other installation considerations.

Remote Control Box Installation

Procedures for mounting and installing the remote control box.

Wired Remote Controller Installation

Proper placement and installation guidelines for wired remote controllers.

Refrigerant Piping Instructions

Instructions for handling and installing refrigerant piping.

Electrical Wiring Guidelines

General guidelines for electrical wiring connections.

Piping Preparation Steps

Steps involved in preparing piping for installation.

Pipe Bending Techniques

Techniques and considerations for bending refrigerant pipes.

Connecting Pipes to the Outdoor Unit

Connecting Pipes to Outdoor Unit

Detailed steps for connecting refrigerant pipes to the outdoor unit.

Checking the Drainage

Drainage Check Procedure

Procedure to verify proper drainage functionality.

Connecting Cables between Indoor Unit and Outdoor Unit

Connecting Cables to the Indoor Unit

How to connect electrical cables to the indoor unit's control board.

Connecting Cable to the Outdoor Unit

Steps for connecting electrical cables to the outdoor unit's control board.

Forming the Piping

How to properly form and secure refrigerant piping.

Long Pipe Setting (more than 30 m)

Specific settings and considerations for long pipe installations.

Air Purging of the Connecting Pipes and the Indoor Unit

Group Control

Two Thermistor system

Cycle Troubleshooting Guide

Self-diagnosis Function

Overview of the unit's self-diagnostic capabilities and error codes.

Trouble Analysis

General methods for analyzing operational problems and causes.

Electronic Parts Troubleshooting Guide

Guide for diagnosing issues with electronic components.

Troubleshooting Compressor;Outdoor Fan

Steps to troubleshoot compressor or outdoor fan failures.

Troubleshooting Indoor Fan

Steps to troubleshoot indoor fan malfunctions.

Outdoor Error Indicator

Interpretation of outdoor unit error codes indicated by LEDs.

Troubleshooting CH01, CH02, CH06

Troubleshooting specific indoor sensor errors.

Troubleshooting CH03

Troubleshooting communication errors between indoor and outdoor units.

Troubleshooting CH04

Troubleshooting drain pump or float switch issues.

Troubleshooting CH05, CH53

Troubleshooting indoor/outdoor communication errors.

Troubleshooting CH21

Troubleshooting DC Peak errors.

Troubleshooting CH22

Troubleshooting current detection circuit errors.

Troubleshooting CH23, CH28

Troubleshooting DC Link voltage errors.

Troubleshooting CH24, CH25

Troubleshooting pressure switch and input voltage errors.

Troubleshooting CH26, CH27

Troubleshooting compressor position and PSC fault errors.

Troubleshooting CH32, CH33

Troubleshooting discharge pipe temperature errors.

Troubleshooting CH41, CH44-CH47, CH65

Troubleshooting various sensor errors.

Troubleshooting CH51, CH60

Troubleshooting EEPROM check sum errors.

Troubleshooting CH61, CH62

Troubleshooting condenser/heat sink temperature errors.

Exploded View and Replacement Parts List

Indoor Unit Exploded View

Visual breakdown of the indoor unit components.

Indoor Unit Parts List

List of replacement parts for indoor units.

Indoor Unit Model Specific Views

Visual breakdown for specific indoor unit models.

Outdoor Unit Exploded View

Visual breakdown of the outdoor unit components.

Outdoor Unit Parts List

List of replacement parts for outdoor units.

Outdoor Unit Model Specific Views

Visual breakdown for specific outdoor unit models.

LG ABNW366KSA1 Specifications

General IconGeneral
RefrigerantR410A
Power Supply220-240V, 50Hz
TypeSplit
Cooling Capacity36, 000 BTU/h
Noise Level (Outdoor)50 dB

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