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LG ATNH09GRLE2 User Manual

LG ATNH09GRLE2
146 pages
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Air Conditioner
SVC MANUAL(General)
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
Internal Use Only
http://biz.lgservice.com

Table of Contents

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LG ATNH09GRLE2 Specifications

General IconGeneral
TypeSplit System
Cooling Capacity9000 BTU/h
Power Supply220-240V, 50Hz
Power Consumption (Cooling)840 W
Noise Level (Outdoor)50 dB
Operating Temperature (Heating)24 °C

Summary

Part 1 General Information

Safety Precautions for Air Conditioner Servicing

Essential safety guidelines and cautions for handling and servicing the air conditioner unit.

Air Conditioner Model Line Up

Overview of different indoor and outdoor unit models, including specifications and chassis names.

Product Nomenclature Explained

Explanation of the coding system for indoor and outdoor unit model names and their components.

Part 2 Functions & Controls

Functions and Accessories List

Detailed list of functions and available accessories for various indoor unit types, indicating applicability.

Air Flow Control Features

Description of various air flow control modes, including auto swing, chaos swing, and air flow steps.

PLASMA Air Purifying System

Explanation of the PLASMA Air Purifying System, its mechanism for removing contaminants, and filter maintenance.

Installation Settings

Details on setting External Static Pressure (ESP) and High Ceiling operation for optimal installation.

Reliability Features

Information on hot start, self-diagnosis function, and soft dry operation for ensuring unit reliability.

Convenience Functions

Overview of convenience functions such as cooling/heating operations, auto cleaning, and timer settings.

Special Functions and Kits

Details on special functions like Low Ambient control, Space control, and Auto Elevation Grille.

Part 3 Basic Control

Basic Control: Normal Operation

Explanation of basic principles for controlling motor RPM via compressor frequency and IPM module.

Basic Control: Compressor Control

Details on compressor control using fuzzy logic for stable system performance in cooling and heating modes.

Basic Control: EEV Control

Explanation of EEV operation using fuzzy control rules to maintain superheat or discharge pipe temperature.

Part 4 Trouble Shooting

Troubleshooting: Self-Diagnosis Function

Guide to understanding indoor and outdoor error indicators, codes, and their causes for fault identification.

Troubleshooting: Pump Down Procedure

Step-by-step instructions for performing pump down, including dip switch settings and LED indicators.

Troubleshooting: Evacuation Process

Procedure for evacuating refrigerant from the system using a vacuum pump, ensuring proper vacuum level.

Troubleshooting: Gas Charging

Instructions for charging refrigerant into the system, including connecting hoses and purging air.

Troubleshooting: Cycle Part Analysis

Analysis of refrigeration cycle performance based on temperature differences, pressure, and current for fault diagnosis.

Troubleshooting: Electronic Parts

Troubleshooting steps for product non-operation, remote control issues, and component failures.

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