E12 displayed, door alarm may sound even when doors are closed

Safety first: Unplug the refrigerator before removing any trim or panels around the door switches.

Steps:

• Check door closure: Ensure the door closes fully and the gasket is not obstructed by food packages or shelves.
• Inspect door switch: Locate the door switch (usually in the frame near the top or side). Press it manually; the interior light should turn off. If not, the switch may be faulty.
• Magnet check (if magnetic sensor): Some models use a magnet in the door and a reed switch in the frame. Verify the magnet is present and aligned with the sensor.
• Test switch: With power off, remove the switch and test continuity with a multimeter while pressing it. Replace if it does not open/close correctly.
• Adjust door: If the door is sagging, adjust the hinges so the switch is fully depressed when closed.

Note: A faulty door sensor can also cause cooling issues because fans and lights may not operate correctly.