Oven makes loud rattling or grinding noise when fan is running

Safety first: Disconnect power before accessing the fan.

• Access fan: Remove the rear internal panel to expose the fan blade.
• Tighten blade nut: Check the central nut securing the blade to the shaft. Tighten if loose.
• Inspect blade: Look for bent or cracked blades. Replace the blade if damaged.
• Check for debris: Remove any foreign objects from the fan housing.
• Motor replacement: If noise persists and the motor feels rough when spun by hand, replace the fan motor.