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Sorry, there was a problem. Please try again later.Thank you for your inquiry, BestBuyCustomer! It is normal to hear a humming sound while the oven is in operation and can continue 30-60 minutes after the cooking cycle has been completed. The fan will help with preheating faster and maintaining a consistent heat while baking. We hope that this information is helpful! -Katrina
Sorry, there was a problem. Please try again later.Yes, it is normal for the fan to turn on and off. That is how it maintains the desired temp. Perhaps a quick read of the owner's manual would be beneficial
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