Food cooks unevenly; items near the back or one side are much more done than others.

Safety first: Use oven mitts when adjusting racks or food during cooking.

• Verify fan operation: Listen for the fan and feel for airflow inside the chamber. If absent, troubleshoot the fan motor.
• Improve airflow: Avoid covering entire racks with solid pans; leave space around dishes for air circulation.
• Rotate food: For long cooks, rotate racks and swap positions halfway through.
• Level racks: Ensure racks are properly seated and level so juices and heat distribute evenly.