Food cooks unevenly; top is burnt while inside remains undercooked, or one side browns more than the other.

Safety first: Unplug and cool before cleaning internal parts.

• Check loading: Avoid stacking food too high or blocking airflow holes in the basket. Shake or turn food mid-cycle as recommended.
• Clean heater guard: Remove the basket and clean the perforated heater guard and surrounding area to restore airflow.
• Inspect fan and vents: Ensure the fan guard and rear vents are free of grease and debris. Clean with a soft brush and mild detergent.
• Verify fan speed: During a test run, listen for a strong, consistent airflow. A weak or pulsing sound may indicate a failing fan motor that should be replaced.
• Check seals: Inspect basket and door seals for gaps that could cause hot spots. Replace worn seals if available.

Warning: Do not cover the basket base with foil in a way that blocks airflow; this can cause uneven cooking and overheating.