Air fryer overheats food quickly or burns the outside while inside remains undercooked.

Safety first: Unplug and let the unit cool before inspection.

Steps to address overheating:

• 1. Verify usage: Avoid overfilling the basket and always shake or turn food as recommended. Use recommended temperatures from the Granitestone manual.
• 2. Inspect sensor placement: Access the NTC temperature sensor and ensure it is properly mounted away from direct radiant heat of the element, as designed.
• 3. Check heater relay: If the heater stays on continuously without cycling, the heater relay may be stuck closed. Inspect the control PCB and replace if necessary.
• 4. Replace faulty sensor or thermostat: If the unit runs too hot even at low settings, replace the NTC temperature sensor and, if present, the high-limit thermostat.