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LG CT09F - User Manual

LG CT09F
150 pages
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SINGLE CAC
Air Conditioner
SERVICE MANUAL(General)
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
CONFIDENTIAL
Copyright © 2019 - 2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
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LG CT09F Specifications

General IconGeneral
BrandLG
ModelCT09F
CategoryAir Conditioner
LanguageEnglish

Summary

Part 1 General Information

Safety Precautions

Instructions to prevent injury and damage during operation and servicing.

Model Line Up

Lists available indoor and outdoor unit models and their specifications.

Nomenclature

Explains the coding system for product model names.

Minimum Floor Area

Guidelines for required room floor area for installation.

Part 2 Functions & Controls

List of Functions & Accessory

Details functions and accessories for various indoor unit types.

Air Flow Control

Explains automatic and chaos swing functions for airflow direction.

Installation Functions

Details the E.S.P. (External Static Pressure) setting procedure.

Reliability Features

Explains hot start, self-diagnosis, and soft dry operations.

Convenience Functions & Controls

Describes operation modes like auto cleaning, timers, and child lock.

Special Functions & Kits

Covers low ambient control and space control functions.

Part 3 Basic Control

Normal Operation Principles

Controls compressor RPM via IPM and variable frequency input.

Compressor Control Logic

Uses fuzzy control to maintain evaporating/condensing temperatures.

EEV Control Mechanism

Uses fuzzy control rules to manage discharge pipe temperature.

Part 4 Trouble Shooting

General Troubleshooting Procedures

Covers self-diagnosis, maintenance, and basic electronic checks.

Indoor Unit Faults and Errors

Details common indoor unit error codes and troubleshooting steps.

Outdoor Unit Faults and Errors

Covers various outdoor unit errors including IPM, current, and sensor issues.

Communication and Phase Errors

Addresses PCB communication, phase, and wiring errors.

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