Ice maker stops and displays E1; unit may not power the compressor or fan, interior stays warm, no ice production.

Safety first: Unplug the ice maker from the wall outlet before removing any panels. Do not work on a wet floor or with wet hands.

Steps to check and correct E1:

• Power reset: Unplug the unit for 5–10 minutes, then plug it back in and see if E1 clears. If it returns, continue.
• Access the thermistor: Remove the rear or side service panel (varies by NewAir model). Locate the small temperature sensor (thermistor) clipped to the evaporator or cabinet wall, usually with two thin wires leading to the control board.
• Inspect the sensor and wiring: Check for broken insulation, corrosion on the connector, or a loose plug at the main control board. Reseat the connector firmly.
• Test the thermistor (if you have a meter): With the unit unplugged, disconnect the thermistor and measure its resistance. Compare to the NewAir service spec (commonly around 5–20 kΩ at room temperature). If it reads open (OL) or shorted (near 0 Ω), it is defective.
• Replace if faulty: If the thermistor is damaged or out of spec, replace it with a NewAir-compatible cabinet/evaporator thermistor. Route the new sensor in the same position and clip it securely to the surface.
• Reassemble and test: Reinstall panels, plug the unit in, and run a full ice cycle. Confirm that E1 does not reappear and that the evaporator begins to frost.

When to call a technician: If the thermistor tests good but E1 persists, the main control board may be faulty and should be diagnosed by a professional.