LG i-micom fridge error codes
Solutions
Freezer Defrost SensorError
Freezer | Fridge |
---|---|
Ref Sensor Error
Freezer | Fridge |
---|---|
Solution: Ref Sensor disconnected or wiring fault, check with multimeter: 0≈ means short, 1≈value means open, replace if found above mentioned.
LG Side by Side Refrigerator Error Codes
Error Code | Description |
---|---|
Er FS | Freezer Sensor error |
Er rS | Refrigerator Sensor error |
Er dS | Defrost Sensor error |
Er IS | Ice Maker Sensor error |
Er SS | Pantry Room Sensor error |
Er rt | Room Sensor or Ambient Sensor error |
Er It | Ice Maker Kit error |
Er gf | Flow Meter Sensor error |
Er dH | Poor Defrost error |
Er IF | Ice Maker Fan error |
Er FF | Freezer Fan Motor error |
Er rF | Refrigerator Section Fan Motor error |
Er CF | Condenser Fan Motor error |
Er CO | Communication error between Main and Display PCB |


A Green will blink on main pcb if any component failure or Disconnected from main pcb as below table.
LG Inverter Refrigerator Green LED Error Codes
Blink Sequence | Error Description | Solution |
---|---|---|
1 time | Defrost sensor error | Check the defrost sensor and wiring. |
2 times | Knob dial error | Inspect the knob for proper operation. |
3 times | Ref compartment sensor error | Verify the sensor connection and functionality. |
4 times | Defrost circuit error | Check defrost timer and heater. |
5 times | Ambient sensor error | Inspect the ambient sensor for damage. |
No blinking | Normal operation | Continue regular monitoring. |
A tactile switch is given on main pcb between components to testing cooling and defrosting system of LG refrigerator, we can press switch to test as below sequence.
LG Fridge Test Mode
Test Switch Operation | Description |
---|---|
1 Time Press | Start compressor instantly with fan motor. If the fan motor is faulty, it will either stop or run for a 20-second interval. |
2 Time Press | Start defrost heater and stop working compressor and fan motor. The defrost heater starts if the defrost temperature is below 0 degrees Celsius and will remain on until the freezer temperature goes to 13 degrees Celsius. |
LG Inverter Refrigerator Troubleshooting and FAQs
If the Refrigerator Is Not Cooling
-
Check the Power Supply:
- Ensure the refrigerator is connected to a power source.
- Verify that the display panel is powered on (if applicable).
-
Inspect Display and PCB for Errors:
- With Display:
- Check the display for any error codes.
- If an error code is active, the display buttons will not function.
- Refer to the error code list in the user manual for interpretation.
- Without Display:
- Inspect the main PCB (printed circuit board).
- Look for red and green LED blinks indicating an error.
- Refer to the error code list for troubleshooting.
- With Display:
-
If No Error Is Displayed:
- Check Compressor Status:
- Confirm whether the compressor is running.
- If not running, locate the test switch on the main PCB and press it once.
- This action will activate all fans, displays, and the compressor.
- Check Compressor Status:
-
If Compressor Runs But No Cooling:
- Inspect for Refrigerant Leaks:
- Look for oily spots around the pipes or suspected leak areas.
- Use a soap solution to identify leaks by applying pressure (R600a refrigerant system).
- Inspect for Refrigerant Leaks:
Frequently Asked Questions (FAQs)
-
What Should I Do If My Refrigerator Shows an Error Code?
- Refer to the error code list in the manual to identify the issue.
- Errors typically indicate issues like sensor faults, fan problems, or compressor errors.
-
Why Are the Buttons on the Display Panel Not Working?
- This occurs when an error is active. Resolve the error to restore button functionality.
-
How Can I Confirm if the Compressor Is Operational?
- Press the test switch on the main PCB. If the compressor runs along with fans and displays, the compressor is functioning.
-
How Can I Identify Refrigerant Leaks?
- Inspect for oily residue near suspected leak areas.
- Use a soap solution and apply pressure to detect bubbles indicating leaks.
-
What Should I Check if There Is No Cooling but the Compressor Is Running?
- Verify proper refrigerant levels and check for any leakage.
- Ensure fans inside the refrigerator and condenser are operating.
Note: Always consult a professional technician if you are unable to resolve the issue or for complex repairs.
LG inverter refrigerator wiring diagram schematic

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