Advertisement
Table of Contents
- 1 Table of Contents
- 2 Warnings and Precautions for Safety
- 3 Servicing Precautions
- 4 Comp Trip Summary
- 5 Trouble Shooting
- 6 Heavy Repair Method of Refrigerator by Application of Refrigerant
- 7 Specification
- 8 Circuit Diagram
- 9 Pcb Picture
- 10 Trouble Shooting
- 11 Troubleshooting Without Error Display
- 12 How to Install Refrigerator
- 13 How to Service Door Display
- 14 How to Service Funnel Assembly
- 15 Exploded View
- Download this manual
SERVICE MANUAL
CAUTION
PLEASE READ CAREFULLY THE SAFETY PRECAUTIONS OF THIS
BOOK BEFORE CHECKING OR OPERATING THE REFRIGERATOR .
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means), publication,
consent of the LG Electronics entity from which you received this Service Manual. The material covered by this prohibition includes,
without limitation, any text, graphics or logos in this Service Manual.
Copyright © 2021 LG Electronics Inc. All rights reserved. Only training and service purposes.
REFRIGERATOR
MODEL :
LRSXC2706*, LRSXC2306*
GS75S**, GS77** VS27L**, GS66S**
Advertisement
Table of Contents
Troubleshooting
Related Manuals for LG GS77 Series
Summarization of Contents
Comp Trip Summary
Protection Logic
Details the protection logic for different compressor trip scenarios.
Trouble Shooting
Comp Operation Defect
Troubleshooting steps for compressor operation defects.
BLDC Inverter LED Blinking Troubleshooting
Troubleshooting guide for BLDC inverter LED blinking patterns.
Trip & LED Bliking Information
Information about trip errors indicated by LED blinking patterns.
FCT0 Trip & LED 1 blink (FCT0 Fault)
Troubleshooting for FCT0 trip indicated by a single LED blink.
Over Voltage Trip & LED 2 blink (Over Voltage Fault)
Troubleshooting for over voltage trip indicated by two LED blinks.
Miss Cable Trip & LED 3 blink (Miss Cable Error)
Troubleshooting for miss cable error indicated by three LED blinks.
Locked Rotor Trip & LED 5 blink (Locked Rotor)
Troubleshooting for locked rotor trip indicated by five LED blinks.
Over Current Trip & LED 6 blink (Over Current)
Troubleshooting for over current trip indicated by six LED blinks.
IPM Fault Trip & LED 7 blink (IPM Fault)
Troubleshooting for IPM fault trip indicated by seven LED blinks.
Communication error Trip & LED 8 blink (Communication Error)
Troubleshooting for communication errors indicated by eight LED blinks.
Overload Trip & LED 9 blink (Overload Trip)
Troubleshooting for overload trip indicated by nine LED blinks.
Heavy Repair Method of Refrigerator by Application of Refrigerant
1.Outline
Overview of the heavy repair process and its requirements.
1-1. Checkpoints before Heavy Repair
Key checks to perform before commencing heavy repair operations.
1-2. Features of R600a Refrigerant
Properties and characteristics of R600a refrigerant used in refrigerators.
1-3. Features of R600a Refrigerator
Specific features of refrigerators that use R600a refrigerant.
1-4. Location and Environment for Heavy Repair
Guidelines for safe working location and environment during heavy repair.
1-5. Heave Repair Work Tool
List of specialized tools required for heavy repair procedures.
2.Heavy Repair SVC Method
2-1. Returnof Refrigerator Refrigerant
Procedure for safely returning refrigerant from the refrigerator.
2-2. Returnof Remained Refrigerant
Method for recovering any remaining refrigerant from the system.
2-3. Welding Repair Step
Steps involved in performing welding for repairs like compressor replacement.
2-4. Charging Tube Connection Step
Procedure for connecting the charging tube to recharge refrigerant.
2-5. Vacuum Air Removal
Steps for performing a vacuum cycle to remove air from the system.
2-6. Refrigerant Charging
Detailed steps for charging the correct amount of refrigerant.
2-7. Leak Inspection and Cycle Check
Methods for inspecting for leaks and checking the cooling cycle.
2-8. Failure Checking Procedures
Systematic procedures for diagnosing various refrigerator failures.
SPECIFICATION
1. MODEL: LRSXC2706*, GS75S**, GS77**, VS27L**, LRSXC2306*, GS66S**
Identification of the specific refrigerator models covered by this manual.
DIMENSION / CLEARANCE
Detailed dimensions and clearance requirements for installation.
CIRCUIT DIAGRAM
TEST FUNCTION
Explanation of test functions and key operations on the main PCB.
PCB PICTURE
7-1. Main PCB
Identification and labeling of components on the Main Printed Circuit Board.
7-2. Display PCB
Identification and labeling of components on the Display Printed Circuit Board.
7-3. Sub PCB
Identification and labeling of components on the Sub Printed Circuit Board.
7-4. Instaview sensor PCB
Information regarding the Instaview sensor PCB.
7-5. Display PCB(optional)
Details of the optional Display PCB, including its part number.
7-6. WI-FI PCB
Information regarding the Wi-Fi PCB, marked as N/A.
TROUBLE SHOOTING
ERROR CODE SUMMARY
Summary of error codes, their corresponding failures, and display indications.
Troubleshooting with Error Display
1. Freezer Sensor Error
Troubleshooting steps for errors related to the freezer temperature sensor.
Troubleshooting
2. Refrigerator Sensor Error (E rS)
Diagnostic steps for errors related to the refrigerator temperature sensor.
Troubleshooting
3. Room Temperature Sensor Error
Troubleshooting guide for errors related to the room temperature sensor.
Troubleshooting
4. Icing Sensor Error
Diagnostic procedure for errors related to the icing sensor.
Troubleshooting
5. Defrost Sensor Error
Troubleshooting steps for issues with the defrost sensor.
Troubleshooting
6. Defrost Heater Error
Diagnostic procedure for errors related to the defrost heater.
Troubleshooting
7. Freezer Fan Error (E FF)
Troubleshooting steps for errors related to the freezer fan.
Troubleshooting
8. Condenser Fan Error (E CF)
Diagnostic procedure for errors related to the condenser fan.
Troubleshooting
10. Ice Maker Motor Error (E It)
Troubleshooting steps for errors related to the ice maker motor.
Troubleshooting
11. Water detect Hall Switch error (Non-plumbing model type)
Troubleshooting for water detect hall switch errors in non-plumbing models.
Troubleshooting without Error Display
1. Cube/Crush mode doesn’t work
Troubleshooting steps when the cube/crush mode function fails.
2. Water mode doesn’t work (Plumbing model type)
Troubleshooting for water mode failures in plumbing model types.
3. Water mode doesn’t work (Non-Plumbing model type)
Troubleshooting for water mode failures in non-plumbing model types.
4. Refrigerator room led doesn’t work
Troubleshooting steps when the refrigerator room LED lamp fails.
5. Freezer room led doesn’t work
Diagnostic procedure for when the freezer room LED lamp fails.
6. Poor/Over cooling in Fresh food section
Troubleshooting for poor or excessive cooling in the fresh food compartment.
7. Poor cooling in Freezer compartment
Diagnostic steps for poor cooling performance in the freezer compartment.
Troubleshooting
1. COMP operation error
Troubleshooting steps for compressor operation errors.
Troubleshooting
1.How to make TEST MODE
Instructions on how to enter and utilize the refrigerator's test mode.
2. How to remove Terminal Position Assurance (TPA)
Steps for removing and reinstalling Terminal Position Assurance (TPA) connectors.
3. Wire Color
Reference guide for wire colors used in the refrigerator's wiring harness.
Troubleshooting
2. Display PCB
Information and displays related to the refrigerator's control panel.
Only for Wi-Fi models
Communication Error (CO E)
Diagnostic steps for communication errors in Wi-Fi enabled models.
Only for non Wi-Fi models
Communication Error (CO E)
Diagnostic steps for communication errors in non-Wi-Fi models.
Troubleshooting
2) TEMPERATRUE CHART - FRZ AND ICING SENSOR
Temperature and resistance/voltage chart for freezer and icing sensors.
Troubleshooting
3) TEMPERATRUE CHART - REF AND DEF SENSOR
Temperature and resistance/voltage chart for refrigerator and defrost sensors.
Troubleshooting
4) TEMPERATRUE CHART - AMBIENT SENSOR
Temperature and resistance/voltage chart for the ambient sensor.
HOW TO INSTALL REFRIGERATOR
1.How to Adjust Door Height of Refrigerator.
Procedure for adjusting the refrigerator door height for proper alignment.
Door removal
Detailed steps for removing refrigerator doors for easier access.
Removing the Freezer Door
Procedure for safely removing the freezer compartment door.
Removing the Fridge Door
Procedure for safely removing the refrigerator compartment door.
2.Display SVC temperature and InDoor Ice Maker Supply time compensation
SVC compensation for display temperature and ice maker supply time.
2. How to adjust the door level difference.
Procedure for adjusting the door level difference to ensure proper alignment.
2-1. When the bottom part of refrigerator door unleveled.
Steps to correct when the bottom of the refrigerator door is unleveled.
2-2. When the bottom part of freezer door unleveled.
Steps to correct when the bottom of the freezer door is unleveled.
3. How to Adjust the Door level difference(front and rea
Procedure for adjusting front and rear door level differences for proper fit.
EXPLODED VIEW
FREEZER DOOR PART
Exploded view detailing the individual parts of the freezer door.
REFRIGERATOR DOOR
Exploded view detailing the individual parts of the refrigerator door.
FREEZER COMPARTMENT
Exploded view detailing the parts within the freezer compartment.
REFRIGERATOR COMPARTMENT
Exploded view detailing the parts within the refrigerator compartment.
MACHINE COMPARTMENT
Exploded view detailing the components in the machine compartment.
Need help?
Do you have a question about the GS77 Series and is the answer not in the manual?
Questions and answers