Display shows E3 and the air fryer will not start or stops mid-cycle, often after a loud click or power fluctuation.

Safety first: Unplug the appliance. Do not attempt to run it again until inspected. Risk of fire if overheat protection is bypassed.

• Check ventilation: Ensure the air fryer is used on a hard, flat surface with at least 10 cm clearance around all sides and top. Remove any plastic bags or objects blocking vents.
• Clean the air path:
  • Remove basket and pan.
  • Clean grease and food debris from the bottom of the cooking chamber and around the air outlet using a soft brush and mild detergent (no water on electrical parts).
• Internal safety devices (advanced):
  • Access the heater assembly by removing the top cover.
  • Locate the thermal fuse or high-limit thermostat clipped to the heater housing.
  • Check for continuity with a multimeter. An open reading indicates the device has tripped and must be replaced; it is not resettable.
• Replace, do not bypass: Install a thermal fuse or thermostat with the same temperature and current rating. Never bypass or short these safety components.
• Investigate root cause: If the fuse blew, inspect the fan and vents for blockage and verify the heater is not warped or touching plastic parts.