Air fryer will not start and displays E1 on the control panel.

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

Step-by-step checks:

• Power cycle the unit: Unplug for 5–10 minutes, then plug back in and try again. Sometimes E1 can be a transient sensor reading error.
• Inspect the sensor wiring: Remove the cooking basket and look inside the cavity toward the top heating assembly. The NTC sensor is usually a small metal probe or button near the heating element. Access may require removing the top or rear cover (screws under rubber feet or trim). Check that the thin sensor wires are not broken, pinched, or burned.
• Check connectors: Locate the main control PCB (behind the front control panel or top housing). Find the small 2-wire connector from the NTC sensor. Reseat the connector firmly and look for corrosion or discoloration.
• Test continuity (for advanced DIYers): With the unit unplugged, use a multimeter set to resistance (ohms) and measure across the NTC sensor leads. A completely open (infinite) reading indicates a failed sensor.
• Replace the NTC sensor if open: Order a compatible T-fal air fryer NTC temperature sensor for your exact model. Remove the old sensor (usually held by a clip or screw), route the new sensor wiring the same way, and reconnect to the control board.
• If wiring and sensor are good: The fault may be on the control PCB’s sensor input circuit. In that case, replacement of the main control board is typically required and is best done by a qualified technician.

Do not bypass or short the sensor to clear the error; this can cause overheating and fire risk.