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LG AUUC306A User Manual

LG AUUC306A
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 AUUC306A Specifications

General IconGeneral
HSPF9
Phase1
RefrigerantR410A
Weight (Outdoor Unit)110.2 lbs
Voltage (V)208/230
Noise Level (Outdoor)54 dB(A)

Summary

LG Universal System Air Conditioner Service Manual

Important Safety Notices

General safety warnings and precautions for servicing the air conditioner unit.

Model Identification

Available Models (Cooling & Heat Pump)

Lists available cooling-only and heat pump air conditioner models and their specifications.

Model Number Breakdown

Indoor & Outdoor Unit Nomenclature

Explains the structure and meaning of indoor and outdoor unit model numbers.

Safety Precautions

Installation Safety Warnings

Details safety instructions and warnings related to unit installation.

Operational Safety Warnings

Details safety instructions and warnings related to unit operation.

Product Features & Benefits

Key Cooling & Efficiency Features

Highlights eco-friendly refrigerant, rapid cooling, energy saving, and air purification benefits.

Advanced Airflow & Control Features

Explains airflow control, auto restart, dual thermistor, and auto changeover capabilities.

Operational & Safety Features

Details defrost, low ambient, high ceiling, drain pump, and safety functions.

Specialized Control & Diagnostic Functions

Covers zone control, tele control, ESP, electric heater, and self-diagnosis.

Functionality Comparison Tables

Ceiling Cassette Model Functions

Compares available functions across different ceiling cassette models.

Ceiling Concealed Duct Model Functions

Compares available functions across different concealed duct models.

Ceiling & Floor Model Functions

Compares available functions across different ceiling & floor models.

Remote Control Operation Guides

Wireless LCD Remote (Ceiling/Floor Models)

Details the operation of wireless remote controls for ceiling/floor models.

Wireless LCD Remote (Ceiling Cassette Models)

Details the operation of wireless remote controls for ceiling cassette models.

Wireless LCD Remote (Ceiling Concealed Duct Models)

Details the operation of wireless remote controls for concealed duct models.

Wireless LCD Remote (Ceiling Cassette - Alternate View)

Provides alternative details on wireless remote operation for cassette models.

Wired LCD Remote Control Operation

Details the operation of wired remote controls for concealed duct models.

Technical Specifications

Cooling Only Unit Specs (1-5 Ton)

Provides detailed technical specifications for cooling-only units across various tonnages.

Heat Pump Unit Specs (1.5-5 Ton)

Provides detailed technical specifications for heat pump units across various tonnages.

Dimensional Drawings

Indoor Unit Dimensions (Ceiling Cassette)

Displays physical dimensions for ceiling cassette indoor units.

Indoor Unit Dimensions (Ceiling Cassette - Continued)

Displays physical dimensions for ceiling cassette indoor units.

Indoor Unit Dimensions (Ceiling Cassette - Continued)

Displays physical dimensions for ceiling cassette indoor units.

Indoor Unit Dimensions (Ceiling Concealed Duct)

Displays physical dimensions for ceiling concealed duct indoor units.

Indoor Unit Dimensions (Ceiling & Floor)

Displays physical dimensions for ceiling & floor indoor units.

Outdoor Unit Dimensions (AUUC186A/AB)

Displays physical dimensions for AUUC186A/AB outdoor unit model.

Outdoor Unit Dimensions (AUUH186A/AB, AUUC246A/AB)

Displays physical dimensions for specific outdoor unit models.

Outdoor Unit Dimensions (AUUH246A/AB, AUUC306A/AB, AUUH306A/AB)

Displays physical dimensions for specific outdoor unit models.

Outdoor Unit Dimensions (AUUC368A/AB, AUUH368A/AB)

Displays physical dimensions for specific outdoor unit models.

Outdoor Unit Dimensions (AUUC488A/AB, AUUH488A/AB, AUUC608A/AB, AUUH608A/AB)

Displays physical dimensions for specific outdoor unit models.

Wiring Diagrams

Indoor Unit Wiring Diagrams (Ceiling Cassette)

Illustrates the internal wiring for ceiling cassette indoor units.

Indoor Unit Wiring Diagrams (Ceiling Cassette - Heat Pump)

Illustrates the internal wiring for ceiling cassette heat pump units.

Indoor Unit Wiring Diagrams (Ceiling Concealed Duct)

Illustrates the internal wiring for ceiling concealed duct units.

Indoor Unit Wiring Diagrams (Ceiling & Floor)

Illustrates the internal wiring for ceiling & floor indoor units.

Outdoor Unit Wiring Diagrams (Cooling Only)

Illustrates the external wiring for cooling-only outdoor units.

Refrigerant Cycle Diagrams

Cooling Only Models Refrigerant Cycle

Shows refrigerant flow and piping details for cooling-only air conditioners.

Heat Pump Models Refrigerant Cycle

Shows refrigerant flow and piping details for heat pump air conditioners.

Electrical Data

Operational Parameters

Inlet Air Temperature & Voltage Range

Defines the operating limits for inlet air temperature and power source voltage.

Airflow and Pressure Settings

Ceiling Concealed Duct Airflow Performance

Presents airflow performance based on static pressure for duct models.

Ceiling Concealed Duct ESP Adjustment Guide

Explains how to set the external static pressure for duct units.

ESP Setting Procedure

Provides a step-by-step guide for adjusting ESP via the remote controller.

Installation Guide

Indoor Unit Location Selection

Advises on selecting optimal placement for indoor units based on conditions.

Outdoor Unit Installation and Mounting

Guides on installing and securing outdoor units and their settlement.

Indoor Unit Mounting Procedures (Ceiling Cassette)

Details steps for mounting ceiling cassette indoor units.

Indoor Unit Mounting Procedures (Ceiling Concealed Duct)

Details steps for mounting ceiling concealed duct indoor units.

Indoor Unit Mounting Procedures (Ceiling & Floor)

Details steps for mounting ceiling & floor indoor units.

Wall and Floor Installation Mounts

Details installation procedures for wall and floor mounting brackets.

Wiring Connection Guidelines

Explains how to connect the unit's wiring correctly according to regulations.

Decoration Panel Installation Steps

Guides on attaching the decorative front panel to the indoor unit.

Heat Insulation and Piping Installation

Details the process of insulating pipes and forming connections.

Drain Pipe Work Installation

Covers guidelines and procedures for drain pipe installation.

Ceiling Concealed Duct Drain Piping Details

Specific drain pipe installation advice for concealed duct units.

Optional Operation & Grouped Piping

Covers grouped drain piping and optional operation settings.

Two Thermistor System Operation

Explains the dual thermistor temperature control system.

Air Volume Adjustment & Group Control Setup

Details air volume adjustment by ceiling height and group control setup.

Plasma Air Cleaner Installation and Maintenance

Covers installation steps and maintenance for the plasma air cleaner.

Service Parts List and Component Dimensions

Lists replacement parts and provides component dimensions.

Electronic Control System Diagrams

Main PCB Diagrams (Indoor Units)

Illustrates the main PCB layout for ceiling cassette, duct, and floor indoor units.

Circuit Schematic Diagrams

Indoor Unit Circuit Schematics

Provides circuit schematics for ceiling cassette, duct, and floor indoor units.

Component Exploded Views

Indoor Unit Exploded Views

Visual breakdown of indoor unit components for various types.

Ceiling Concealed Duct Exploded Views

Visual breakdown of ceiling concealed duct unit components.

Ceiling & Floor Exploded Views

Visual breakdown of ceiling & floor unit components.

Outdoor Unit Exploded Views & Parts List

Visual breakdown and parts list for outdoor units.