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LG R410A User Manual

LG R410A
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System
Air Conditioner
SERVICE MANUAL R410A
LG
MODELS: ARUN/ARUV Series
ARNU Series
website http://www.lgservice.com
CAUTION
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.

Table of Contents

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LG R410A Specifications

General IconGeneral
BrandLG
ModelR410A
CategoryAir Conditioner
LanguageEnglish

Summary

LG MULTI V SPACE System Air Conditioner Service Manual R410A

Safety Precautions

Installation Safety Guidelines

Covers electrical work, grounding, dedicated circuits, and proper installation.

Re-installation and General Installation Safety

Instructions for re-installation, avoiding flammable gases, using correct breakers, and earthquake preparation.

Operation Safety Precautions

Warnings about power cords, dedicated outlets, water, and wet hands during operation.

Product Handling and Environment Safety

Safety for soaked products, sharp edges, outdoor unit access, and inlet grills.

General Information

Model Names and Nomenclature

Lists and explains model names for indoor and outdoor units.

External Appearance of Indoor and Outdoor Units

Visual representation of indoor and outdoor units.

Indoor and Outdoor Unit Nomenclature Details

Detailed breakdown of model naming conventions.

Outdoor Unit Specifications

Technical specifications for outdoor units including capacity and piping.

Indoor Units

Ceiling Mounted Cassette Type (4Way)

Detailed information on specifications, functions, and operation.

Art Cool Type Indoor Units

Specifications, functions, operation, dimensions, piping, and wiring details.

Art Cool Type (Wide) Units

Specifications, installation, operation, dimensions, piping, and wiring details.

Ceiling Concealed Duct Type (Low static)

Specifications, functions, operation, dimensions, piping, and wiring details.

Ceiling Concealed Duct Type (High Static)

Specifications

Technical specifications for high static concealed duct indoor units.

Funtion

Key functions of the high static concealed duct indoor units.

Operation Details

Detailed explanation of high static concealed duct unit operation.

Dimensions

Physical dimensions for high static concealed duct indoor units.

Outdoor Unit

ARUN Series Outdoor Unit

Specifications, parts, dimensions, piping, wiring, and functions.

Function

Basic Control Functions

Fundamental operational controls like compressor, fan, and LEV management.

Special Control Functions

Advanced control functions including oil return and defrost operations.

Protection Control Mechanisms

Safety features protecting against overcurrent, high/low pressure, and temperature faults.

Other Controls and Setup

Initial setup, instant checking, and emergency operation procedures.

Troubleshooting Guide

Component Failure Phenomena and Checks

Identifies common failures, causes, and troubleshooting methods for key components.

Checking Key Components (Compressor, Fan Motor, LEV)

Detailed methods for testing compressor, fan motor, and linear expansion valve.

Self-Diagnosis Function and Error Codes

Explanation of self-diagnosis features and a table of error codes and causes.

Indoor Unit Sensor and Communication Error Troubleshooting

Steps for resolving indoor unit sensor and remote controller communication errors.

Exploded View & Replacement Parts List

Exploded Views of Indoor Unit Models (TE, TH/TD, TJ, SP, B2, BH, BG, BR)

Exploded views for various indoor unit models including TE, TH/TD, TJ, SP, B2, BH, BG, BR.

Indoor Unit Part Number Tables (TE, TH, TD Models)

Part numbers for TE, TH, and TD model indoor units.

TJ Model Exploded View and Part Numbers

Exploded view and part numbers for TJ model indoor units.

SP Model Exploded View and Part Numbers

Exploded view and part numbers for SP model indoor units.

UV2 CYCLE PARTS

AIR HANDLER PARTS/CONTROL BOX PARTS

Outdoor Unit Parts Information

Outdoor Unit PCB Layout Diagrams

Layout diagrams for various outdoor unit Printed Circuit Boards.

Outdoor Unit Replacement Parts List

Comprehensive list of replacement parts for the outdoor unit.

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