Door alarm beeps even though all doors appear closed.

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

Steps:

• 1. Check door closure: Ensure doors are fully closing and not hitting shelves or food items.
• 2. Inspect gaskets and hinges: Adjust hinges if the door is sagging and not making proper contact with the switch.
• 3. Test door switch: Remove the switch and test continuity while pressing it. Replace if it does not change state reliably.
• 4. Check wiring: Inspect the harness from the switch to the main board for damage or loose connectors.
• 5. Control board: If switches and wiring are good but the alarm persists, the main control board may be misreading the door status and may need replacement.