Display shows E3 and the air fryer shuts off or refuses to start; fan may still run briefly.

Safety: Unplug the unit and let it cool completely. Overtemperature faults indicate the unit may have been running hotter than designed.

Steps:

• 1. Check ventilation: Ensure the air fryer has at least 10–15 cm clearance on all sides and is not pushed against a wall or under low cabinets. Clear any obstructions from the rear and bottom vents.
• 2. Clean interior: Remove the basket and drawer. Clean the interior cavity, especially around the heating element and fan guard, to remove baked-on grease that can trap heat. Use a soft brush and mild detergent; never spray water directly into the heater area.
• 3. Inspect thermal cut-out: Access the underside and heater area by removing the base cover. Locate the thermal fuse or bimetal thermostat mounted near the heater. Check for signs of overheating or discoloration.
• 4. Test continuity: With power disconnected, use a multimeter to test the thermal fuse/thermostat. If it is open (no continuity) and is a one-shot fuse, it must be replaced with the same temperature and rating. If it is a resettable thermostat, press any reset button if present.
• 5. Check fan operation: Confirm that the convection fan spins freely and is not obstructed by debris. A stalled fan can cause localized overheating and trigger E3.
• 6. Reassemble and test: After cleaning and replacing any failed safety devices, reassemble the unit, ensuring all covers and screws are secure, then test with a short, low-temperature cycle.

Important: Never bypass a thermal fuse or thermostat. If the unit repeatedly shows E3 after cleaning and part replacement, the main control PCB may be misreading temperature and should be evaluated by a technician.