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LG CT12F - User Manual

LG CT12F
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 CT12F Specifications

General IconGeneral
BrandLG
ModelCT12F
CategoryAir Conditioner
LanguageEnglish

Summary

Part 1 General Information

Safety Precautions

Instructions and warnings for safe operation and servicing of the air conditioner.

Model Line Up

Details of various indoor and outdoor unit models and their capacity indices.

Nomenclature

Explanation of model naming conventions for indoor and outdoor units.

Part 2 Functions & Controls

List of Functions & Accessory

Overview of functions and available accessories for different indoor unit types.

Air flow

Details on airflow control, swing functions, and fan speed steps.

Installation Functions

Information on setting functions like External Static Pressure (E.S.P.).

Reliability

Explanation of reliability features like Hot Start and Self-diagnosis.

Convenience Functions & Controls

Features enhancing user comfort, including auto operations and timers.

Special Function & KIT

Details on special functions like Low Ambient and Space Control.

Part 3 Basic Control

Normal operation

Basic principle of controlling the compressor motor via frequency.

Compressor control

Maintaining evaporating and condensing temperatures using fuzzy control.

EEV( Electronic Expansion Valve) control

Control rules for the EEV to maintain target discharge pipe temperature.

Part 4 Trouble Shooting

Self-diagnosis Function

Information on error indicators (indoor/outdoor) and error codes.

Pump Down

Procedure for pumping down the refrigerant system.

Evacuation (All amount of refrigerant leaked)

Procedure for evacuating refrigerant from the system using a vacuum pump.

Gas Charging (After Evacuation)

Procedure for charging refrigerant into the system after evacuation.

Cycle Part

Analysis of symptoms related to temperature difference and refrigerant cycle.

Electronic Parts

Troubleshooting steps for products that do not operate.

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