Whynter ice maker shows E2 and stops making ice, fan may still run

Safety: Disconnect power before removing covers or touching internal components.

Steps to address E2:

• Reset the unit: Unplug for 5–10 minutes, then power back on. If E2 reappears, proceed.
• Access evaporator area: Remove the top or side cover to expose the ice-making chamber. The evaporator sensor is usually clipped or glued to the evaporator plate or tubing.
• Check sensor placement: Ensure the sensor is firmly attached to the evaporator surface. If it has fallen off, reattach using thermal tape or a clip so it makes good contact.
• Inspect wiring: Follow the sensor wires back to the control board. Look for kinks, cuts, or loose connectors. Reseat the connector at the board.
• Measure resistance: With the unit unplugged, disconnect the sensor and measure resistance. Compare to the ambient sensor reading at similar temperature; they should be in a similar kΩ range. A reading of 0 Ω or OL indicates a failed sensor.
• Replace sensor: If resistance is out of spec or intermittent when you gently move the wires, replace the evaporator temperature sensor with the correct Whynter part.
• Control board diagnosis: If a new sensor does not clear E2, the main control PCB may not be reading the sensor correctly. Replace the control board after verifying wiring continuity.