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Joshua JenningsAug 6, 2025
What to do if forcible OLP operation is not working in my LG GA-B409U QA Refrigerator?
- JJeffery MorrisAug 6, 2025
If the forcible OLP operation is not working in your LG Refrigerator, replace the Relay Assembly.
What to do if forcible OLP operation is not working in my LG GA-B409U QA Refrigerator?
If the forcible OLP operation is not working in your LG Refrigerator, replace the Relay Assembly.
What to do if resistance of two terminals in PTC-Starter is not acceptable in my LG Refrigerator?
If the resistance of the two terminals in the PTC-Starter is not acceptable, replace the PTC-Starter.
What to do if resistance of Motor M-S is not acceptable in my LG GA-B409U QA Refrigerator?
If the resistance of Motor M-S is not acceptable, replace the compressor in your LG Refrigerator.
General| Energy Efficiency Class | A++ |
|---|---|
| Climate Class | SN-T |
| Refrigerant | R600a |
| Smart Diagnosis | Yes |
| Door Cooling | Yes |
| Linear Cooling | Yes |
| Zero Clearance | Yes |
| Multi Air Flow | Yes |
| Display | LED |
Details about the characteristics of R600a refrigerant.
Requirements for the physical location where the refrigerator is installed.
List of necessary tools and equipment for servicing.
Checks and precautions to take before commencing service.
Procedure for handling refrigerant and recharging the compressor.
Detailed specifications for the GA-B409U*QA model.
Detailed specifications for the GA-B379U*QA model.
Instructions for removing the freezer and refrigerator doors.
Steps to access and remove the door switch.
Guide for removing and replacing the refrigerator lamp.
Procedure for accessing and replacing the display cover.
Steps for disassembling the fan and fan motor assembly.
Instructions for removing the defrost control assembly.
Steps for disassembling the damper control unit.
Procedure for removing and replacing the heater sheath.
Role, composition, and usage notes for the compressor.
Details on the PTC starter's composition, role, and application.
Circuit diagram illustrating the PTC starter's application.
Guidelines for restarting the motor and cooling the PTC.
Explanation of how the PTC starter interacts with the OLP.
Important considerations for using the PTC starter correctly.
Definition, role, and usage notes for the Over Load Protector.
Schematic diagram of the refrigerator's electrical circuits.
Troubleshooting steps for compressor and related electrical parts.
Diagnostic procedures for the relay assembly and its components.
Troubleshooting for other electrical components like sensors and motors.
A chart to diagnose common refrigerator complaints and their remedies.
Chart detailing causes and states for refrigerating cycle issues.
Methods for detecting refrigerant leaks in the system.
Overview of components and procedures for controlling the refrigerating cycle.
Overview of the refrigerator's functional modes and display board.
How to adjust and select temperatures for different compartments.
Details on the Super Freezing function and its operation.
Explanation of the Vacation mode for energy saving.
Information on the buzzer sound produced by button presses.
Explanation of the automatic defrosting process and its timing.
Sequence of operation for key electric components.
Functionality and procedure for the refrigerator's self-test mode.
How error codes are represented using LEDs and their meanings.
Procedure for testing the refrigerator's functions and diagnosing faults.
Description of the main electrical circuits, including power and supply.
Explanation of the oscillation circuit used for timing and clock generation.
Description of the reset circuit for initializing MICOM functions.
Checking load operations and buzzer functions.
Explanation of temperature sensor circuits and their readings.
Description of the switch input circuit for testing.
Table and explanation for temperature compensation adjustments.
Identification and list of parts on the main PCB assembly.
