Air fryer will not start and displays E1 immediately when powered on or when pressing the Start button.

Safety first: Unplug the Sunbeam air fryer from the wall outlet and allow it to cool completely before opening any panels. Never work on the unit while it is connected to power.

Step-by-step checks:

• 1. Power reset: Unplug the fryer for 5–10 minutes, then plug it back in and try again. Sometimes E1 can be a transient sensor reading error.
• 2. Access the sensor: Remove the basket and drawer. Turn the unit upside down on a soft cloth. Remove the screws securing the bottom cover to access the internal wiring and heater cavity.
• 3. Locate the NTC sensor: Find the small metal probe or bead-type sensor clipped near the heating element or in the air channel. It will usually have two thin wires going to the main control PCB.
• 4. Check the connector: Ensure the sensor plug is fully seated on the control board and that there is no corrosion or burning on the pins. Reseat the connector several times.
• 5. Inspect the wiring: Look for broken, pinched, or burned sensor wires, especially where they pass near the heating element or fan housing. Repair any damaged insulation with high‑temperature sleeving or replace the harness.
• 6. Test continuity (for advanced users): With a multimeter set to resistance (ohms), measure across the sensor leads. A typical NTC will show a finite resistance (often 10k–100kΩ at room temperature). If it reads open (OL), the sensor is faulty and must be replaced.
• 7. Replace parts as needed: If the sensor is open or physically damaged, replace the temperature sensor assembly. If the sensor tests good but E1 persists, the sensor input on the main control PCB may be defective and the board will need replacement.

When to stop: If you are not comfortable opening the unit or using a meter, or if you see burned components on the PCB, stop and contact a qualified appliance technician.