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LG LAN181CNW, LAU181CNW, LA180CPI, LA180CPO User Manual

LG LAN181CNW, LAU181CNW, LA180CPI, LA180CPO
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LG
Room Air Conditioner
SERVICE MANUAL
LG
MODELS: LAN181CNW(ASNC183VML3)
LAU181CNW(ASUC183VML3)
LA180CPI (ASNC183VML3)
LA180CPO (ASUC183VML3)
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 LAN181CNW, LAU181CNW, LA180CPI, LA180CPO Specifications

General IconGeneral
BrandLG
ModelLAN181CNW, LAU181CNW, LA180CPI, LA180CPO
CategoryAir Conditioner
LanguageEnglish

Summary

Safety Precautions

Installation Electrical Safety

Warnings related to power cords, sockets, grounding, and panel installation.

Product Handling and Installation Safety

Cautions on unpacking, installation, sharp edges, and handling.

Operational Safety Guidelines

Warnings about heaters, open windows, flammable materials, and product operation.

Functions

Product References

Technical Specifications Table

Detailed specifications including power, capacity, noise, and dimensions.

Refrigeration Cycle Diagram

Cooling Only Model Cycle Diagram

Diagram illustrating the refrigeration cycle for cooling-only models.

Wiring Diagram

Indoor and Outdoor Unit Wiring Diagrams

Electrical wiring diagrams for indoor and outdoor units.

Operation Details

Cooling, Heating, and Defrost Operations

Explains cooling, heating, and defrost control operations and conditions.

Fuzzy Operation Modes Explained

Details on Fuzzy Operation for Cooling, Dehumidification, and Heating.

Display Function

Self-diagnosis Function Details

Describes error codes and corresponding check points.

Installation

Installation Parts and Tools

Lists required installation parts and tools for mounting the unit.

Installation Map and Clearances

Illustrates recommended clearances and piping routes for installation.

R-410A Refrigerant Information

Information on R-410A refrigerant properties, compatibility, and pressure.

Unit Location and Placement Guidelines

Guidelines for selecting the best locations for indoor and outdoor units.

Flaring Work and Piping Connection

Flaring Work Procedure Steps

Step-by-step guide for performing correct flaring work on pipes.

Connecting Cables Between Units

Indoor to Outdoor Unit Wiring Procedure

Procedures for connecting power and control cables between units.

Wiring Power Source and Safety Precautions

Precautions regarding power source, circuit breakers, and wiring safety.

Drainage Check and Piping Formation

Drainage System Check and Piping Steps

Instructions for checking drainage and forming refrigerant piping.

Air Purging and Evacuation

Leak Testing and Nitrogen Purging Steps

Procedures for leak testing and purging air with nitrogen.

Evacuation and Finishing Job Steps

Steps for system evacuation and completing the air purging process.

Test Running Procedures

Operation

Remote Control Operations Overview

Explains the functions of each button on the remote control.

Disassembly of Indoor Unit Parts

2-way and 3-way Valve Operations

Cycle Troubleshooting Guide

Schematic Diagram

Exploded View and Parts List

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