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LG CT12 NR2 - User Manual

LG CT12 NR2
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 CT12 NR2 Specifications

General IconGeneral
BrandLG
ModelCT12 NR2
CategoryAir Conditioner
LanguageEnglish

Summary

Part 3 Basic Control

Part 4 Trouble Shooting

Self-diagnosis Function

Explains the self-diagnosis system and error indicators.

Troubleshooting Indoor Error

Lists specific indoor unit error codes and their causes.

Troubleshooting Outdoor Error

Comprehensive guide to outdoor unit error codes and diagnostics.

CH 22 (Input of Over Current)

Troubleshooting steps for over current in the unit.

CH 23 (DC Link Voltage Low)

Diagnosis for low DC link voltage errors.

CH 26 (Compressor Starting Failure)

Steps to address compressor starting issues.

CH 27;73 (PSC;PFC Fault Error)

Troubleshooting for PSC/PFC fault errors.

CH 29 (Compressor Over Current)

Steps to resolve compressor over current faults.

CH 32 (Discharge pipe overheating error of Inverter)

Diagnosis for discharge pipe overheating in inverter units.

CH 51 (Indoor Device Connection Error)

Addresses errors related to indoor device connection.

CH 52 (PCB Communication Error)

Troubleshooting PCB communication issues.

CH 05;53 (Indoor;Outdoor Device Communication Error) → Detection by indoor devices

Diagnosing communication errors between indoor and outdoor units.

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