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LG AVNH126ELAC - User Manual

LG AVNH126ELAC
174 pages
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LG
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Air Conditioner
SERVICE MANUAL
LG
CAUTION
website http://www.lgservice.com
e-mail http://www.lgeservice.com/techsup.html
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
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Summary

Model Number Nomenclature

Indoor Unit Nomenclature

Explains the coding for indoor unit model numbers.

Outdoor Unit Nomenclature

Explains the coding for outdoor unit model numbers.

Safety Precautions

General Safety Warnings

Highlights crucial safety instructions and symbols.

Installation Safety Precautions

Details safety measures for installing the unit.

Dimensions

Cassette Type TE Dimensions

Provides detailed measurements for TE chassis cassette units.

AUUH488 C Outdoor Unit Dimensions

Lists the physical dimensions for the AUUH488C outdoor unit.

Product Specifications

Indoor Unit Specifications

Lists technical data for various indoor unit types.

Outdoor Unit Specifications

Lists technical data for outdoor unit models.

Installation

Indoor Unit Cassette Type Installation Steps

Step-by-step guide for installing cassette indoor units.

Wiring Connection

Guidelines for connecting electrical wiring to the unit.

Piping Length and Elevation

Specifies limitations and guidelines for refrigerant piping length.

Troubleshooting Guide

Cycle Troubleshooting Analysis

Provides diagnostic steps for refrigeration cycle issues.

Trouble 1: Product Not Operating

Steps to diagnose and resolve complete unit failure.

Trouble 2: Remote Controller Issues

Troubleshooting steps for remote control communication problems.

Self-Diagnosis Function Error Codes

Lists error codes and their meanings for self-diagnosis.

(3-way) Valve

Pumping Down Procedure

Step-by-step guide for pumping down refrigerant.

Evacuation Procedure

Steps for evacuating the system with a vacuum pump.

Gas Charging Procedure

Instructions for charging the system with refrigerant.

Function

Ceiling Cassette Type Functions

Explains functions like Auto Swing and Cooling Mode.

Heating Mode Operation

Describes the operational logic for heating mode.

Outdoor Units

Basic Control Operations

Details normal operation for compressor, fan, and valves.

EEV Control

Explains Electronic Expansion Valve control logic.

Reversing Valve Control

Details the operation of the reversing valve.

Defrost Control

Explains the defrost process and conditions.

Discharge Temperature Control

Protects the compressor based on discharge pipe temperature.

Exploded View & Replacement Parts List

Indoor Unit - Ceiling Cassette Type Parts

Lists parts and numbers for ceiling cassette indoor units.

Outdoor Unit AUUH488 C Parts

Lists parts and numbers for the AUUH488C outdoor unit.

LG AVNH126ELAC Specifications

General IconGeneral
Energy Rating5 Star
RefrigerantR32
TypeSplit System
Cooling Capacity3.5 kW
Compressor TypeInverter
Warranty10 Years on Compressor
Power Supply230V, 50Hz
Operating Temperature (Cooling)18°C to 43°C

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