Air fryer runs but food cooks unevenly; some areas burn while others are undercooked.

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

Steps to improve cooking uniformity:

• 1. Avoid overloading: Do not overfill the basket; leave space for air to circulate around food.
• 2. Shake or rotate food: For large batches, pause mid-cycle to shake the basket or rotate trays.
• 3. Clean heater and fan guard: Remove grease and debris from the heater guard and fan guard that may be blocking airflow.
• 4. Check fan operation: Ensure the fan runs at full speed without hesitation. If it seems weak, service or replace the fan motor.
• 5. Inspect basket and accessories: Replace warped or aftermarket accessories that block airflow patterns designed by Insignia.
• 6. Verify sensor placement: Ensure the NTC sensor is properly mounted and not bent away from its intended location.

Warning: Do not cover the entire basket bottom with foil; this can severely disrupt airflow and cause overheating.