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LG AUUH246A User Manual

LG AUUH246A
119 pages
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LG
Universal System
Air Conditioner
SERVICE MANUAL
LG
CAUTION
website http://www.lgservice.com
e-mail http://www.lgeservice.com/techsup.html
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
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LG AUUH246A Specifications

General IconGeneral
HSPF9.0
RefrigerantR410A
Cooling Capacity24000 BTU/h
Operating Temperature (Cooling)18°C to 46°C
Operating Temperature (Heating)-15°C to 24°C
Noise Level (Outdoor)52 dB

Summary

LG Air Conditioner Models

Cooling Only Models

Lists available air conditioner models for cooling-only operation.

Heat Pump Models

Lists available air conditioner models for heat pump operation.

Model Number Nomenclature Explained

Indoor Unit Model Number Breakdown

Explains the coding system for indoor unit model numbers.

Outdoor Unit Model Number Breakdown

Explains the coding system for outdoor unit model numbers.

Safety Precautions for Air Conditioner Use

Installation Safety Guidelines

Crucial safety instructions to follow during the installation process.

Operational Safety Guidelines

Important safety instructions for operating the air conditioner unit.

LG Air Conditioner Features and Benefits

Energy Saving Gold Fin Technology

Details the benefits of the Gold Fin coating for heat exchanger longevity.

Plasma Air Purifier Functionality

Explains the air purification capabilities of the unit.

Group and Central Control Systems

Describes the multi-unit control capabilities via wired remote controllers.

Auto Restart and Changeover Operations

Information on automatic restart after power failure and mode changeover.

Zone Control and Tele Control Features

Details on controlling specific zones and remote operation via telephone.

Air Conditioner Remote Control Functions

Wireless LCD Remote Control (Ceiling & Floor)

Overview of the wireless LCD remote for Ceiling & Floor models.

Wireless LCD Remote Control (Ceiling Cassette)

Overview of the wireless LCD remote for Ceiling Cassette models.

Wireless LCD Remote Control (Concealed Duct)

Overview of the wireless LCD remote for Concealed Duct models.

Wired LCD Remote Control (Concealed Duct)

Overview of the wired LCD remote for Concealed Duct models.

Air Conditioner Specifications

Cooling Only Specifications (1.5 to 5 Ton)

Detailed technical specifications for cooling-only units across various capacities.

Heat Pump Specifications (1.5 to 5 Ton)

Detailed technical specifications for heat pump units across various capacities.

Dimensional Drawings for Air Conditioners

Indoor Unit Dimensions: Ceiling Cassette Types

Provides dimensional drawings for various Ceiling Cassette indoor units.

Indoor Unit Dimensions: Concealed Duct & Ceiling & Floor Types

Provides dimensional drawings for Concealed Duct and Ceiling & Floor indoor units.

Outdoor Unit Dimensions

Provides dimensional drawings for various outdoor unit models.

Wiring Diagrams for Air Conditioners

Indoor Unit Wiring Diagrams

Illustrates the internal wiring for different types of indoor units.

Outdoor Unit Wiring Diagrams

Illustrates the internal wiring for different types of outdoor units.

Refrigerant Cycle Diagrams

Cooling Only Model Refrigerant Cycle

Diagrams showing the refrigerant flow for cooling-only operation.

Heat Pump Model Refrigerant Cycle

Diagrams showing the refrigerant flow for heat pump operation.

Electrical Data for Air Conditioners

Electrical Specifications by Capacity

Provides detailed electrical data organized by unit capacity.

Air Conditioner Operation Range

Inlet Air Temperature Ranges (Cooling & Heating)

Defines the acceptable inlet air temperature ranges for operation.

External Static Pressure and Air Flow

Ceiling Concealed Duct Airflow Data

Table showing airflow rates at different static pressures for concealed duct units.

Setting External Static Pressure (E.S.P.)

Procedure for setting the External Static Pressure on concealed duct models.

Air Conditioner Installation Procedures

Indoor Unit Location Selection

Guidelines for selecting the optimal location for indoor unit installation.

Outdoor Unit Location and Mounting

Guidelines for selecting outdoor unit location and secure mounting.

Indoor Unit Installation Steps

Detailed steps for installing various types of indoor units.

Wiring Connection Guidelines

Instructions for correctly connecting the electrical wiring to the units.

Heat Insulation and Piping Installation

Instructions for applying heat insulation and forming refrigerant piping.

Drain Pipe Installation and Testing

Procedures for installing drain pipes and testing the drain pump.

Optional Operation Setup

Setup procedures for optional features like Two Thermistor System.

Plasma Air Cleaner Installation

Safety and installation steps for the plasma air cleaner accessory.

Electronic Control Device Diagrams

Main PCB Assembly Diagrams

Component layouts for main PCB assemblies of different unit types.

Air Conditioner Schematic Diagrams

Schematic Diagrams for Indoor Units

Detailed electrical schematic diagrams for indoor units.

Schematic Diagrams for Outdoor Units

Detailed electrical schematic diagrams for outdoor units.

Exploded View and Replacement Parts Lists

Indoor Unit Exploded Views and Parts

Exploded views and part numbers for various indoor units.

Outdoor Unit Exploded Views and Parts

Exploded views and part numbers for various outdoor units.

Replacement Parts Lists by Model

Comprehensive lists of replaceable parts categorized by model number.

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