Ice maker continues to run and attempt to make ice even when the basket is clearly full.

Safety first: Unplug the unit before inspecting sensors.

Steps to restore full detection:

• Check basket position: Ensure the ice basket is fully seated in its guides so it passes through the sensor beam correctly.
• Clean sensor lenses: Wipe the infrared sensor windows on both sides of the basket opening.
• Inspect wiring: Verify the ice full sensor harness is connected and not damaged.
• Test sensor: With the unit running and basket empty, block the sensor beam with your hand. The unit should stop making ice after a short delay. If it does not, the sensor or board is faulty.
• Replace sensor: Install a new ice full infrared sensor assembly if it fails the test.

When to call a professional: If a new sensor does not correct the issue, the main control board may need replacement.