F5 error appears; unit may not sense when the ice bin is full or empty.

Safety first: Unplug the ice maker before cleaning or adjusting sensors.

Steps to correct:

• Clean sensor lenses: If your Haier model uses optical bin sensors, clean both emitter and receiver lenses with a soft cloth and mild cleaner.
• Check alignment: Ensure the two sensor halves face each other directly across the bin opening and are not blocked by trim or ice.
• Inspect wiring: Verify the sensor harness is intact and firmly connected to the control board.
• Test function: Some models allow entering a diagnostic mode to test bin sensor operation. Follow the service manual to confirm proper switching.
• Replace sensor: If cleaning and alignment do not restore function, replace the bin full sensor assembly.

When to call a technician: If F5 persists after sensor replacement, the control board may be misinterpreting the signal and should be checked by a professional.