Refrigerator shows E11 and the door alarm may sound even when doors are closed.

Safety first: Disconnect power before removing any door switch components.

Steps to check:

• Inspect door alignment: Ensure the refrigerator and freezer doors close fully and are level. Adjust hinges if the door is sagging and not engaging the switch.
• Check the door switch: Locate the door switch (usually in the frame near the top or side). Press it manually and listen for a click. If it feels loose or does not click, it may be faulty.
• Test continuity: Remove the switch and test with a multimeter. It should show continuity when pressed and open when released. Replace if it fails this test.
• Inspect wiring: Check for damaged or pulled wires at the switch connector.

Note: If switches and wiring are good but E11 persists, the main control board may not be reading the door status correctly and may need replacement by a technician.