F11
Liebherr User Interface / Keypad Communication Fault

Freezer shows F11; may not accept temperature changes; keypad or touch panel unresponsive.

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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

Loose ribbon cable between UI and main board, Failed touch control module, Moisture ingress into control panel

How to Fix / Troubleshooting

Safety first: Disconnect power before removing the control panel.

Steps:

  • Dry the panel: If condensation or spills occurred, leave the unit unplugged with the door open for several hours to dry the control area.
  • Access UI board: Remove the top fascia or inner control cover to expose the user interface PCB.
  • Check connections: Reseat the ribbon cable or wiring harness between the UI and main control board. Look for corrosion on connectors.
  • Inspect for damage: Check the UI board for burnt components or cracked solder joints.

Remedy: If reseating cables does not restore function, replace the user interface control module with the correct Liebherr part. Ensure all seals and gaskets are properly refitted to prevent future moisture ingress.

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Repair Difficulty

Medium 3/5

Required Part

User Interface Control Module
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