LG LM-2421C2L/A2L - User Manual

Multi Type Room Air Conditioner
SERVICE MANUAL
MODEL: LM-2421C2L/A2L
LM-3022C3L/A3L

Summary

Functions

Indoor Unit Functions

Details the operational controls and features of the indoor unit.

Remote Controller Functions

Explains the buttons and display functions of the remote control.

Refrigeration Cycle Diagram

LM-2421 C2 L;A2 L Cycle Diagram

LM-3022 C3 L;A3 L Cycle Diagram

Wiring Diagram

Indoor Unit Wiring Diagram

Outdoor Unit Wiring Diagram

Self-diagnosis Function

Error Indicator and Codes

Details error codes and their troubleshooting check points.

Installation Guide

Unit Location and Piping Requirements

Guides on selecting the best installation site and piping specifications.

Indoor Unit Installation Steps

Piping and Drainage Procedures

Cable Connection and Drainage Check

2-way and 3-way Valve Operations

Refrigerant Handling Procedures

Pumping Down

Describes removing air and moisture from the system before charging.

Evacuation

Details the vacuum process to remove non-condensable gases.

Gas Charging

Explains the steps for adding refrigerant to the system.

Cycle Troubleshooting Guide

Trouble Analysis and Cycle Checks

Guides on diagnosing issues via temperature difference and pressure.

Electronic Parts Troubleshooting Guide

Unit Operation and Component Failures

Troubleshooting steps for non-operating units and components.

Remote Control and System Errors

Diagnosing remote control issues, cooling, fan, and communication faults.

Schematic Diagrams

Indoor Unit Schematic

Outdoor Unit Schematic

LM-3022 C3 L;A3 L Schematic Diagram

Exploded Views and Parts Lists

Indoor Unit Components

Outdoor Unit Components

LG LM-2421C2L/A2L Specifications

General

Brand	LG
Model	LM-2421C2L/A2L
Category	Air Conditioner
Language	English