RCA ice maker turns on but immediately shows "ice full" or stops, even with an empty basket.

Safety first: Unplug the unit before adjusting sensors.

• Step 1 – Clean sensor: Wipe the ice full sensor windows with a soft cloth to remove frost or dust.
• Step 2 – Check alignment: Ensure the emitter and receiver are directly facing each other and not knocked out of position.
• Step 3 – Free level arm: If your model uses a mechanical arm, move it up and down to ensure it is not stuck. Lubrication is generally not required; just clear obstructions.
• Step 4 – Replace sensor: If the unit still thinks the bin is full, replace the ice full sensor assembly. If that does not resolve it, the main control board may be faulty.