F2 code on display; ice cubes may be oversized or undersized.

Safety first: Unplug the ice maker before cleaning or adjusting sensors inside the ice-making compartment.

Steps to correct:

• Locate thickness sensor: On many Haier models, this is a metal probe or plastic sensor near the evaporator plate that detects ice thickness before harvest.
• Clean the sensor: Use a soft cloth and warm water with mild vinegar to remove mineral deposits or slime. Do not use abrasive pads.
• Check adjustment: Some sensors have an adjustment screw or sliding bracket. Verify it is set to the factory position (refer to user/service manual). Adjust slightly if ice has been consistently too thick or thin.
• Inspect wiring: Ensure the sensor harness is intact and firmly connected to the control board.
• Test operation: Restore power and run a cycle. If F2 returns, the sensor may be defective and should be replaced.

When to call a technician: If sensor replacement does not resolve F2, the control board’s sensor input may be faulty and requires professional diagnosis.