How to Fix / Troubleshooting

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

Step-by-step checks:

Inspect from inside: Remove the fan cover inside the cavity (usually held by screws). Check for loose screws or debris around the fan.
Tighten fan nut: If the fan blade is loose on the shaft, tighten the retaining nut carefully.
Check for rubbing: Spin the fan by hand and ensure it does not touch the cover. Gently straighten bent blades if necessary.
Replace motor: If noise persists and the motor feels rough when turned by hand, replace the convection fan motor and blade.

When to call a technician: For persistent or electrical buzzing noises, have a technician inspect the motor and power module.

Oven makes loud rattling or scraping noises when the convection fan is running.

Possible Causes