Air fryer will not start; display shows E1 immediately after power-on or when pressing Start.

Safety first: Unplug the Proscenic air fryer from the wall outlet before opening any panels. Allow the unit to cool completely if it was recently used.

Steps to check and correct E1:

• 1. Power reset: Unplug the air fryer for 5–10 minutes, then plug it back in and try again. If E1 returns, continue.
• 2. Access the temperature sensor: Remove the basket and drawer. Turn the unit upside down on a soft surface. Remove the bottom screws to access the internal cavity. Locate the temperature sensor (NTC probe) near the heating element or in the air channel, usually a small metal probe with two wires.
• 3. Inspect the sensor wiring: Check for loose connectors, broken wires, or burnt insulation on the sensor harness leading to the main control PCB. Reseat any loose plug firmly into the board.
• 4. Test continuity (if you have a multimeter): Disconnect the NTC sensor plug from the PCB and measure resistance across the two sensor leads. A typical NTC will show a finite resistance (often 10k–100kΩ at room temperature). If the meter reads open (OL), the sensor is faulty and must be replaced.
• 5. Inspect the PCB connector: Look for cracked solder joints or corrosion at the sensor connector on the main board. If the connector is damaged or the board is burnt, the main PCB may need replacement.
• 6. Reassemble and test: After reseating or replacing the sensor, reassemble the base, plug the unit in, and test a short cooking cycle. If E1 persists after sensor replacement, the main control board is likely defective and should be replaced or serviced by a technician.

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