Food cooks unevenly; some areas are burnt while others are undercooked.

Safety first: Unplug and cool the fryer before cleaning or opening.

Steps:

• 1. Avoid overloading: Cook in smaller batches and shake or turn food halfway through to improve airflow.
• 2. Clean fan and heater guard: Remove the basket and clean the heater guard and visible fan area of grease and debris.
• 3. Check vents: Ensure rear and bottom vents are not blocked by walls or objects.
• 4. Inspect fan blades: Open the housing and check that the fan blades are intact and evenly spaced. Replace the fan blade if warped or broken.
• 5. Verify sensor position: Ensure the NTC sensor is correctly located in the air stream, not pressed against metal or the heater.

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