Display shows E2 and ice production stops shortly after starting a cycle.

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

• Reset and observe: Unplug for 5 minutes, plug back in, and start a cycle. If E2 reappears quickly, proceed.
• Locate the ice tray sensor: Remove the top or side cover to access the evaporator/ice tray area. The sensor is usually clipped or glued to the evaporator plate or ice tray wall.
• Check mounting: Ensure the sensor is firmly attached to the evaporator surface. If it has fallen off, clean the surface and reattach using thermal tape or the original clip so it makes good thermal contact.
• Inspect wiring: Follow the sensor wires back to the control board. Look for cuts, abrasions, or loose connectors. Reseat the connector on the PCB.
• Measure resistance: With the unit unplugged, disconnect the sensor and measure resistance at room temperature. Compare to Tower’s spec; a reading of 0 Ω or infinite indicates a failed sensor.
• Replace sensor: If out of spec, install a new ice tray/evaporator NTC sensor. Route wiring away from the rotating ice sweep arm and fan blades.
• Control board check: If the sensor is good and wiring is intact, replace the main control PCB as the sensor input circuit may be defective.