Air fryer beeps and shows E2; unit will not heat or start a cooking cycle.

Safety first: Unplug the Proscenic air fryer and let it cool completely before inspection.

Steps to address E2:

• 1. Basic reset: Disconnect power for 10 minutes, then reconnect and test. If E2 reappears, proceed.
• 2. Access the sensor area: Remove the basket and drawer. Turn the unit upside down and remove the bottom screws to open the housing. Locate the NTC temperature sensor near the heating element or air outlet.
• 3. Inspect for shorts: Follow the two sensor wires from the probe to the main PCB. Look for melted insulation, pinched wires against metal, or oil/condensation bridging the contacts at the connector. Separate any pinched wires and clean the connector with a dry cloth.
• 4. Test resistance: With the sensor unplugged from the PCB, measure resistance across the sensor leads. If the reading is extremely low (near 0Ω) or the meter beeps for continuity, the sensor is shorted and must be replaced.
• 5. Check the PCB: If the sensor tests normal but E2 persists, inspect the main control board around the sensor input for burn marks or corrosion. A damaged board will require replacement.
• 6. Reassemble: After replacing the sensor or board, reassemble the housing, ensuring wires are routed away from sharp edges and hot surfaces. Test the unit with a short preheat cycle.

Warning: Do not operate the air fryer with a known sensor fault; overheating and fire hazards are possible.