Display shows E2 and the unit stops making ice; fan may run but compressor cycles off quickly.

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

Steps to diagnose and fix:

• Reset the unit: Unplug for 5–10 minutes, then reconnect. If E2 returns, proceed.
• Access the evaporator area: Remove the top or rear panel (depending on model) to expose the evaporator plate where ice forms. The evaporator thermistor is usually clipped or glued to the plate or tubing.
• Check sensor placement: Ensure the thermistor is firmly attached to the evaporator surface. If it has fallen off, reattach it using aluminum tape or the original clip so it makes good thermal contact.
• Inspect wiring: Follow the thermistor wires back to the control board. Look for cuts, abrasions, or melted insulation. Reseat the connector on the PCB.
• Measure resistance: With the unit unplugged, disconnect the thermistor and measure its resistance at room temperature. Compare to the specification in the service documentation. Replace the thermistor if the reading is open, shorted, or far out of range.
• Control board check: If the thermistor and wiring are good, the main control PCB may not be reading the sensor correctly. Inspect for visible damage and replace the board if necessary.

Note: A faulty evaporator sensor can cause poor ice size control and frost buildup; replacing it promptly prevents further issues.