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LG LW1200ERY3 User Manual

LG LW1200ERY3
46 pages
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LG
Room
Air Conditioner
SERVICE MANUAL
LG
MODEL: LW1200PR
LW1200ER
LW1000PR
LW1000ER
LW1004ER
LWL1210WAL
LWL1230WAL
WM-1231
LW1000ERY3
LB1000ER
LB1200ER
LW100CS
LW120CS
LW1000PRY3
LW1200PRY3
LW1200ERY3
CAUTION
website http://www.lgservice.com
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
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LG LW1200ERY3 Specifications

General IconGeneral
Cooling Capacity12, 000 BTU
Energy Efficiency Ratio (EER)11.0
Voltage115V
RefrigerantR-410A
Operating Frequency60 Hz
Power Consumption (Cooling)1090W
TypeWindow Air Conditioner

Summary

Safety and Precautions

Installation Safety Guidelines

Safety instructions for proper and secure installation of the unit.

General Operational Warnings

Critical warnings for safe operation, handling, and environment.

Unit Specifications and Dimensions

Manual Symbol Explanations

Defines symbols used in the manual for hazard and note alerts.

Physical Dimensions

Details the external measurements of the air conditioner unit.

Product Technical Data

Lists key technical specifications for various LG air conditioner models.

Installation Procedures

Site Selection Criteria

Guidelines for choosing the optimal location for unit installation.

Installation Step-by-Step

Comprehensive instructions covering the entire installation process.

Installation Kit Components

Lists all parts included in the installation kit for mounting the unit.

Required Tools for Installation

Lists the necessary tools for performing the installation.

Operation and Remote Control

Unit Control Functions

Explains the purpose and usage of each control button on the unit and remote.

Remote Control Usage

Details on operating the air conditioner using the provided remote control.

Disassembly and Maintenance

Mechanical Component Removal

Procedures for disassembling mechanical parts of the air conditioner.

Air Handling System Disassembly

Steps for removing components related to air circulation and filtration.

Electrical Component Removal

Procedures for safely disassembling electrical parts like the compressor and overload protector.

Refrigerant System Servicing

Instructions for handling the refrigerant system during disassembly and maintenance.

Schematics and Diagrams

Electronic Control Schematic

Detailed circuit diagram of the electronic control device.

Unit Wiring Diagram

Visual representation of electrical connections for the unit's components.

PCB Component Layouts

Illustrates the location of components on the main and display Printed Circuit Boards.

Troubleshooting Common Issues

Piping System Troubleshooting

Guidance on diagnosing problems within the refrigeration piping system.

Cooling Performance Issues

Flowchart for troubleshooting poor cooling and ineffective operation.

Unit Start-Up Failures

Diagnostic steps for issues preventing the unit from starting.

Electrical System Faults

Troubleshooting guide for common electrical component failures and non-operation.

Compressor and Fan Operation Problems

Diagnoses issues related to compressor and fan operation or lack thereof.

Control and Feature Malfunctions

Troubleshooting for remote control, energy saver, and fan speed issues.

PCB and Display Errors

Addresses abnormal displays and potential issues with the DC PCB assembly.

Motor, Noise, and Overload Issues

Troubleshooting for fan motor problems, unit noise, and compressor overload conditions.

Cooling Efficiency and Noise Diagnosis

Troubleshooting for insufficient cooling, restricted airflow, and excessive noise.

Parts Identification

Exploded Assembly View

Illustrated breakdown of the unit's components for identification.

List of Replacement Parts

Catalog of all available replacement parts with their respective part numbers.

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