Safety first: Turn off power at the breaker before touching internal components. Allow the oven to cool.

Identify noise source: Note whether the noise occurs only in convection mode, during preheat, or continuously. This helps isolate convection vs cooling fan.
Check racks and accessories: Remove all racks, stones, and accessories and run the oven briefly. If the noise stops, adjust or replace the noisy item.
Inspect fans: Remove the interior convection cover and check the fan blade for looseness or contact with the cover. Tighten mounting screws and reposition as needed.
Cooling fan: Access the cooling fan from the rear or top. Check for wobble or grinding when spun by hand. Replace the fan motor if bearings are noisy or seized.
Tighten panels: Tighten any loose screws on the rear and side panels that may vibrate during operation.

Warning: Do not run the oven with covers removed; moving fan blades can cause injury.

Oven makes loud banging, rattling, or grinding noises during operation.

Possible Causes