Display shows E1 and cooking will not start or stops immediately on a Nuwave digital air fryer.

Safety First: Unplug the Nuwave air fryer and allow it to cool completely before opening any panels. Do not work on the unit while it is connected to power.

Step-by-step checks:

• Power reset: Unplug the air fryer for 10 minutes, then plug it back in and try a short cook cycle. Sometimes E1 can be triggered by a transient fault.
• Inspect sensor wiring: Remove the cooking basket and look into the cavity. On many Nuwave models, the temperature sensor (NTC probe) is mounted near the top heating element or along the side wall. Check for any visibly broken, burnt, or disconnected wires leading to the sensor.
• Check for physical damage: If the sensor probe is bent, broken, or its insulation is melted, it will need replacement.
• Connector check: With the unit unplugged, remove the top cover (usually Phillips screws on the underside or back). Locate the small two-wire harness from the temperature sensor going to the main control board. Ensure the connector is fully seated and not corroded or burnt.
• Continuity test (advanced): Using a multimeter set to resistance (ohms), measure across the two sensor leads. A typical NTC sensor will show a finite resistance (often between 5k–200k ohms at room temperature). If it reads open (OL) or 0 ohms (short), the sensor is defective.
• Replace faulty parts: If the sensor is bad, replace it with a compatible Nuwave air fryer NTC temperature sensor. If the sensor tests good but E1 persists, the main control board may have a failed sensor input and should be replaced.

When to stop: If you are not comfortable opening the housing or using a multimeter, stop after the visual inspection and contact a qualified appliance technician.