Ice maker shows a door or bin switch error; the unit will not start a cycle with the door closed.

Safety first: Disconnect power before accessing switches or control wiring.

Steps to check:

• Check door closure: Ensure the door closes fully and the gasket is not obstructing the latch area. A partially open door will prevent operation.
• Locate the door switch: On many Grundig models, a small reed switch is mounted in the cabinet frame and a magnet in the door. Verify the magnet is still in place and not loose.
• Test switch continuity: With the unit unplugged, remove the inner trim to access the switch. Use a multimeter to test continuity while opening and closing the door. Replace the switch if it does not change state.
• Check the bin switch: Some models have a bin-in-place switch. Remove the bin and inspect the switch lever or sensor. Make sure it is not broken or jammed with ice.

Note: After replacing a switch, secure all wiring away from moving parts and sharp edges.