LG GR-GR-L257BTBA User Manual

CAUTION
PLEASE READ CAREFULLY THE SAFETY PRECAUTIONS OF THIS BOOK
BEFORE CHECKING OR OPERATING THE REFRIGERATOR.
REFRIGERATOR
SERVICE MANUAL
MODEL: GR-L257NI
COLOR: TITANIUM
http://biz.lgservice.com
Ref. No.
GR-GR-L257BTBA

LG GR-GR-L257BTBA Specifications

General

Type	Bottom Freezer
Energy Efficiency Class	A+
Noise Level	39 dB
Smart Diagnosis	Yes
Door Cooling+	Yes
Linear Cooling	Yes
Inverter Linear Compressor	Yes

Summary

Warnings and Precautions for Safety

General Safety Precautions

Detailed safety guidelines for operating and repairing the refrigerator to prevent accidents and danger.

Refrigerator Installation Guide

Door Height Adjustment

Procedure for adjusting refrigerator door height to ensure proper leveling and alignment.

MICOM Functionality

User Interface and Temperature Control

System Operations & Failure Diagnosis

Overview of sequential operations, failure codes, and test functions for system diagnostics.

MICOM Circuit Explanations

Power, Oscillation, Reset, and Load/Dispenser Circuits

Covers power supply, clock generation, system reset, and load/dispenser operational circuits.

Sensor, Motor, and Compensation Circuits

Ice Maker & Dispenser Operation & Repair

Working Principles

Explains the operational principles of the ice maker and dispenser systems.

Ice Maker Functions & Control

Test Functions and Troubleshooting

Procedures for test functions, door opening impacts, and troubleshooting common ice maker issues.

Troubleshooting Guide

General Faults and Compressor Issues

Covers common faults like no power, faulty start, and compressor not operating.

Cooling and Temperature Related Problems

Diagnoses issues with cooling system clogs, weak refrigeration, and temperature anomalies.

Defrosting, Icing, Sound, and Odor Issues

Troubleshooting steps for defrost failures, icing, operational sounds, and compartment odors.

Heavy Repair Procedures