Oven makes loud banging, rattling, or scraping noises during fan operation.

Safety first: Turn off power and allow the oven to cool before accessing the fan.

• Access fan: Remove the rear inner panel of the oven cavity to expose the convection fan.
• Remove debris: Clear any loose foil, food, or screws from around the fan.
• Tighten blade: Check the fan blade retaining nut; tighten if loose.
• Inspect blades: If blades are bent, replace the fan blade. If the motor shaft has excessive play or grinding noise, replace the fan motor.