Safety first: Unplug the refrigerator before removing trims or panels.

Step-by-step:

Locate door switch: On many Liebherr models, the door contact is a magnetic reed switch hidden in the cabinet frame, triggered by a magnet in the door.
Check magnet: Inspect the door edge for the small magnet insert. Ensure it is present and not loose or missing.
Test switch function: With power restored briefly, open and close the door while observing the interior light and display. If they do not change state, the switch or magnet is faulty.
Access switch: Remove the inner trim or top panel where the switch is located. Carefully pull out the reed switch module.
Inspect wiring: Check for broken or pulled wires, especially near the hinge area.
Replace faulty parts: Replace the reed switch module or door magnet with Liebherr-compatible parts. Ensure correct orientation and secure mounting.
Reassemble and test: Refit trims, restore power, and verify that the light and alarms respond correctly to door opening and that F6 clears.

Error code F6 appears; interior light and controls may behave erratically, or the unit may not respond to door opening.

Possible Causes