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LG LS-H126RLN1 - User Manual

LG LS-H126RLN1
67 pages
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LG
Room
Air Conditioner
SERVICE MANUAL
LG
MODELS: LS-H126RLN1
LS-H096QLN1
LS-H076QLN0
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 LS-H126RLN1 Specifications

General IconGeneral
Cooling Capacity12000 BTU/h
RefrigerantR410A
Power Supply220-240V, 50Hz
Air Flow (Indoor)550 m³/h
Weight (Indoor Unit)8.5 kg
Compressor TypeRotary
TypeSplit

Summary

LG Model Name

Safety Precautions

Installation Safety Warnings

Warnings and cautions for installing the air conditioner unit safely.

Operation Safety Guidelines

Precautions for safe operation of the air conditioner, including electrical safety.

Installation Hazards and Precautions

Hazards and precautions related to unit installation, removal, and mounting.

Usage and Handling Safety

Safety measures for using and handling the air conditioner, including cleaning and avoiding foreign objects.

Installation Environment and Handling

Safety considerations for the installation environment and product handling.

Unit Dimensions

Indoor Unit Dimensions

Physical dimensions (W, H, D) for the indoor unit of the air conditioner.

Outdoor Unit Dimensions

Physical dimensions for the outdoor unit (7k Btu Series) of the air conditioner.

Outdoor Unit Specifications

Physical dimensions for the outdoor unit (9k, 12k Btu Series) of the air conditioner.

Product Specifications Overview

Installation Procedures

Selecting the Best Installation Location

Guidance on choosing optimal placement for indoor and outdoor units.

Fixing Installation Plate and Drilling

Procedures for mounting the installation plate and drilling wall holes for piping.

Flaring Work Procedure

Detailed steps for performing correct refrigerant pipe flaring.

Indoor Piping Connection

Steps for connecting indoor unit piping and drain hose through the wall.

Outdoor Piping and Cable Connection

Procedures for connecting refrigerant pipes and cables to the outdoor unit.

Indoor Unit Cable Connection

Guidelines for connecting the power cable to the indoor unit.

Outdoor Unit Cable Connection

Guidelines for connecting the power cable to the outdoor unit.

Drainage and Piping Formation

Checking drainage and forming piping for proper installation.

Air Purging and Vacuum Pump

Procedures for air purging using a vacuum pump for system integrity.

Evacuation and Job Finishing

Evacuation process and final steps after air purging.

Test Running Procedure

Steps to perform a test run after installation to verify functionality.

Operation Modes and Controls

Control Functions Overview

Explanation of indicators and basic control functions for C/O and H/P models.

Cooling, Heating, and Dehumidification

Detailed operation logic for cooling, dehumidification, heating, and defrost modes.

Fuzzy Logic Operation Modes

Explanation of Fuzzy logic operation for cooling, dehumidification, and heating.

Timer, Swing, and Airflow Settings

Functions related to timers, airflow speed selection, and swing modes.

Special Operation Modes

Details on sleep, chaos, and jet cool modes for enhanced user experience.

Auto Restart and Forced Operation

Features for automatic restart after power failure and manual forced operation.

Buzzer, Air Cleaner, and Heater Functions

Operation of buzzer, air cleaner, and heater features of the unit.

Display Indicators Explained

Explanation of various indicators shown on the display for heating and cooling modes.

Self-Diagnosis Functionality

How to use the self-diagnosis feature to identify error codes.

Remote Control Button Functions

Detailed explanation of each button on the remote control unit.

Indoor Unit Disassembly

Grille Removal Procedure

Step-by-step guide to safely remove the indoor unit's front grille.

Control Box and Evaporator Removal

Procedures for removing the control box and the evaporator unit.

Motor Cover and Fan Removal

Steps to remove the motor cover and the cross-flow fan assembly.

Heater Removal

Instructions for safely removing the heater element from the unit.

Electrical Diagrams

Electric Control Device Schematics

Schematic diagrams for the electric control device, including heat pump models.

Components Location on PCBs

Identification of component locations on the main printed circuit boards.

Display Assembly Components

Location of components on the display assembly for troubleshooting.

Wiring Diagrams

Troubleshooting Guide

Refrigeration Cycle Diagrams

Visual representation of the refrigeration cycle for different unit types.

Pipe Length and Elevation Limits

Guidelines for maximum pipe length and elevation differences.

Valve Operation and Troubleshooting

Troubleshooting common issues related to 2-way and 3-way valves.

Refrigerant System Procedures

Procedures for air purging, pumping down, and gas charging.

Cycle Performance Analysis

Analysis of cycle parts and performance based on temperature and current.

Electronic Component Issues

Troubleshooting steps for electronic parts and main PCB issues.

Remote Control Malfunctions

Diagnosing and resolving issues related to the remote controller.

Compressor and Fan Operation Faults

Troubleshooting compressor and outdoor fan drive failures.

Indoor Fan and Louver Issues

Diagnosing problems with the indoor fan and vertical louvers.

Heating Mode Failures

Troubleshooting common issues when the heating mode does not operate.

General Outdoor Unit Checks

Checks for outdoor components like compressor, fan, and 4-way valve.

Exploded Views

Indoor Unit Component Breakdown

Visual breakdown of all parts comprising the indoor unit.

Outdoor Unit Component Breakdown

Visual breakdown of all parts comprising the outdoor unit.

Replacement Parts List

Indoor Unit Parts Catalog

Comprehensive list of part numbers for the indoor unit.

Outdoor Unit Parts Catalog

Comprehensive list of part numbers for the outdoor unit.

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