Air fryer overheats and burns food even when set to a lower temperature.

Safety first: Unplug the unit and let it cool. Overheating can be dangerous; do not leave the air fryer unattended until the issue is resolved.

Steps to address overheating:

• Verify settings: Confirm that the temperature and time are correctly set and that no preset is overriding your manual settings.
• Check sensor placement: Remove the bottom cover and locate the NTC temperature sensor. Ensure it is firmly clipped in its designated spot near the heater or in the air channel, not hanging loose or touching the heater directly.
• Inspect sensor wiring: Look for damaged insulation or shorted wires that could cause incorrect readings.
• Test sensor (optional): If you have a multimeter and the sensor's spec, verify its resistance at room temperature. A sensor far out of spec should be replaced with a Kalorik NTC temperature sensor.
• Check heater relay: On the control PCB, inspect the heater relay/triac. If it is welded closed, the heater may stay on continuously. Replace the control board assembly if the relay is defective.
• Replace control board: If sensor and relay appear normal but temperature control is erratic, replace the main control PCB, as the temperature regulation circuitry or firmware may be faulty.

After repair, test with an oven thermometer placed in the basket to confirm that the actual temperature matches the set temperature within a reasonable range.