F1
LG
Keypad or User Interface Error
Wine cooler shows F1 and may not respond to temperature adjustments; display may flash.
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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 or shorted touchpad button, Moisture intrusion into control panel, Loose ribbon cable between UI and main PCB, Failed user interface board
How to Fix / Troubleshooting
Safety: Unplug the unit before removing the control panel or handling electronic boards.
Steps:
- 1. Inspect control panel: Check for visible cracks, liquid spills, or condensation on the display and buttons.
- 2. Dry the area: If moisture is present, leave the unit unplugged and allow the panel to dry completely for 24 hours, then test again.
- 3. Check for stuck buttons: Gently press each button to ensure it moves freely and is not jammed.
- 4. Access UI board: Remove the front control panel trim to expose the user interface board and ribbon cable.
- 5. Reseat ribbon cable: Disconnect and reconnect the ribbon cable between the UI and main PCB, ensuring it is fully seated and not damaged.
- 6. Replace UI board: If F1 persists and buttons do not respond correctly, replace the user interface board with the correct LG part.
Note: Avoid spraying cleaners directly on the control panel; apply to a cloth first to prevent future moisture damage.
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Repair Difficulty
Medium
3/5
Required Part
User Interface Board
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