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REFRIGERATOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY
PRECAUTIONS" IN THIS MANUAL.
Ref. No.
GB7143**AV
GB7143**BV
MODEL :
Ref. No.
Ref. No.
GB7143**GZ
GB7143**RZ
GB7143**HZ
GB7138**XZ
http://biz.lgservice.com
Ref. No.
GB7143**RZ
GB7138**XZ
COLOR :

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Table of Contents
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Summarization of Contents

Disassembly Procedures
Door Disassembly
Procedures for disassembling refrigerator and freezer doors.
Fan and Fan Motor Disassembly
Steps for disassembling the fan and fan motor units.
Defrost Control Assembly Disassembly
Guide to disassembling the defrost control assembly components.
Compressor Service
Inverter Linear Compressor Inspection
Guide for checking defects of the inverter linear compressor.
Inverter Linear Drive Defect Determination
Procedure to determine defects in the inverter linear drive system.
LED Blinks: Stroke Trip Troubleshooting
Troubleshooting for LED blinking twice, indicating a stroke trip.
Heavy Repair by Refrigerant Application
R600a Refrigerant Features
Details on the properties and safety of R600a refrigerant.
Heavy Repair SVC Method
Step-by-step procedures for heavy repair services.
Troubleshooting (Mechanical Part)
Electric Components Troubleshooting
Troubleshooting for electrical components and cooling issues.
Refrigerating Cycle Troubleshooting
Troubleshooting guide for the refrigerating cycle.
MICOM Function and PCB Explanation
Function Exposition
Explanation of the refrigerator's functions and controls.
Eco Friendly Mode
Description of the power-saving Eco Friendly mode.
Troubleshooting With Error Display
Freezer Sensor Error (FS)
Troubleshooting steps for Freezer Sensor Error (FS).
Fridge Sensor Error (rS)
Troubleshooting steps for Fridge Sensor Error (rS).
Communication Error (Er CO)
Troubleshooting steps for Communication Error (Er CO).
Troubleshooting Without Error Display
Vegetable LED Not Working
Troubleshooting for the vegetable LED not functioning.
Water Pump Motor Failure
Troubleshooting for the water pump motor failure.
Poor Cooling in Refrigerator
Diagnosing and fixing poor cooling in the refrigerator.
Poor Cooling in Freezer
Diagnosing and fixing poor cooling in the freezer.
Reference Charts
FRZ and Icing Sensor Temperature Chart
Temperature resistance and voltage chart for FRZ and icing sensors.
REF and DEF Sensor Temperature Chart
Temperature resistance and voltage chart for REF and DEF sensors.

Table of Contents