Bush oven fan is noisy, rattling, or scraping during operation.

Safety first: Turn off power and wait for the fan to stop completely before working inside the oven.

• Access fan: Remove the internal rear panel to expose the fan and element.
• Tighten fan nut: Check that the central nut securing the fan blade to the motor shaft is tight. Tighten gently while holding the blade.
• Straighten or replace blade: If the blade is bent and scraping the cover, carefully straighten it or replace it if cracked.
• Check motor bearings: Spin the fan by hand. If it grinds or wobbles, replace the motor.
• Secure covers: Ensure the rear cover and any baffles are firmly screwed in place to prevent vibration.