Refrigerator shows F51; ice level sensor or bin detection not working; ice production stops prematurely.

Safety: Disconnect power before accessing ice compartment electronics.

Steps:

• Clean sensors: Wipe the ice level sensor windows and reflectors with a soft, dry cloth to remove frost or mineral deposits.
• Check bin position: Ensure the ice bin is fully seated and correctly aligned with the sensor.
• Inspect wiring: Verify that the sensor harness is intact and firmly connected.

If F51 persists, the sensor module may need replacement by a technician.