E3 error; ice maker stops mid-cycle, ice thickness is inconsistent or machine aborts harvest

Safety: Unplug the ice maker and shut off water supply before working inside the ice-making compartment.

• Locate thickness sensor: On Midea cube ice makers, the thickness sensor is usually a metal or plastic probe near the evaporator grid that the ice slab contacts before harvest.
• Clean the probe: Mineral scale or biofilm can insulate the probe. Use a soft cloth or sponge with warm water and a food-safe descaler (or white vinegar solution) to thoroughly clean the probe and surrounding area. Do not use sharp tools that can scratch the surface.
• Check alignment: Ensure the probe is positioned correctly relative to the evaporator plate as per the user manual. Gently bend back into position if it has been knocked out of place.
• Inspect wiring: Follow the probe wires back to the control board. Look for kinks, cuts, or loose connectors. Reseat the connector on the PCB.
• Test operation: Restore power and run a test cycle. If E3 returns after cleaning and alignment, the sensor or PCB may be defective.
• Replace sensor if needed: Install a new Midea ice thickness sensor/probe assembly. If a new sensor does not resolve the error, the main control board likely requires replacement by a professional.