Why is my dryer stuck on only one cycle?

Why is my dryer stuck on only one cycle?

I hope someone can help with this! My dryer will only operate on Delicate cycle. No matter how I tell it to cancel and try to use Timed Drying or anything else, it will only default to Delicate and the associated low heat. I have to run it at least twice on Delicate to get my clothes dry. Everything seems to be working fine other than that; I cannot use any of the settings except Delicate.

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