F3
Lanbopro
Compressor Control / Relay Fault
Display shows F3 and the unit may short cycle or not reach set temperature.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Stuck compressor relay on main control board, Loose compressor wiring, Defective main control board, Voltage supply issues
How to Fix / Troubleshooting
Safety first: Unplug the wine cooler before accessing the rear compartment.
- Check power supply: Ensure the outlet provides stable voltage and is not controlled by a wall switch or GFCI that is tripping.
- Inspect compressor wiring: Remove the rear panel and verify all wires to the compressor and start relay are secure.
- Control board inspection: Examine the main control board for burnt relay contacts or discoloration near the compressor relay.
- Replace control board: If the relay appears damaged or F3 persists, replace the main control board.
- Professional help: If you are not comfortable working around high-voltage components, contact a qualified technician.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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