Ice maker continues to run even when the ice bin is full; ice overflows.

Safety first: Unplug the unit before working near the bin sensor.

Steps to correct:

• Verify bin position: Ensure the ice bin is properly seated and not bypassing the sensor.
• Clean sensor: For optical systems, clean emitter and receiver lenses. For mechanical levers, remove ice buildup.
• Test switch: Use a multimeter to test the bin full switch for proper operation. Replace if stuck closed.
• Monitor operation: After repair, run the unit and confirm it stops making ice when the bin is full.

When to call a technician: If the control board ignores a working sensor, board replacement may be needed.