Cooking results are uneven; some areas of food are burnt while others are undercooked.

Safety first: Allow the unit to cool before internal inspection.

Steps to improve cooking uniformity:

• Proper loading: Do not stack food too thickly; shake or turn food halfway through cooking.
• Clean air paths: Clean the top and rear grills and any internal diffusers to ensure unobstructed airflow.
• Inspect fan blade: Access the fan blade and check for missing or bent fins. Replace if damaged.
• Check diffusers: Ensure any internal air guides or diffusers are correctly installed and not warped.