LG GR-R491JCA User Manual

CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY
PRECAUTIONS" IN THIS MANUAL.
REFRIGERATOR
SERVICE MANUAL
http://biz.lgservice.com
GR-R602JQA
MODEL: GR-R491JCA
Ref. No.
GR-R602JTQA
GR-R491JTA
COLOR: SUPER WHITE
TITANIUM

LG GR-R491JCA Specifications

General

Ice Maker	Yes
Door-in-Door	Yes
Linear Cooling	Yes
Smart Diagnosis	Yes
Color	Silver
Type	French Door Refrigerator

Summary

Safety Precautions

Servicing Precautions

Air Recharging in Compressor

Procedure for recharging refrigerant in the compressor.

Disassembly

Adjustment

Compressor Overview

PTC Starter Functionality

Over Load Protector (OLP)

Troubleshooting

Compressor and Electric Components Troubleshooting

Troubleshooting flowchart for compressor and related electric components.

PTC and OLP Troubleshooting

Other Electric Components Troubleshooting

Service Diagnosis Chart

Refrigerating Cycle Troubleshooting

MICOM Function and Circuit Description

MICOM Basic Functions

Defrosting Operation

Error Diagnostic Mode

PCB Functionality

Power Circuit Description

Load Drive Circuit Analysis

Temperature Sensor Circuit

Door Open Detection Circuit

Temperature Compensation Circuit

Sensor Resistance Specifications

Troubleshooting Guide

Power Source Issues

Troubleshooting steps when the power source is poor.

Cooling Performance Issues

Troubleshooting for poor cooling performance.

Refrigerator Temperature Problems

Defrosting Failure Troubleshooting

Main PWB Assembly and Parts List

Replacement Parts List (GR-R562/R602)

Replacement Parts List (GR-S562/S602)

PWB Diagram (GR-R562/R602)

PWB Diagram (GR-S562/S602)

Exploded View and Parts List

Exploded View (GR-R562/602, GR-S562/602)

Exploded View (GR-562/602)