Oven fan noisy (convection or cooling fan)

Convection fan noise is usually worn motor bearings or a loose/warped blade. Note that many ovens run a cooling fan after cooking ends; that is normal. A grinding noise during self-clean start can be the door lock motor rather than a fan.

Single source ~60 min moderateBrands: All

Before you start

Turn off the 240 V breaker before removing the rear panel or fan cover
Let the oven cool before reaching inside

Diagnostic steps

Unlock all 4 steps with expected values

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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