so my dryer runs fine on cold or delicate but it stops on heat

Hello. My dryer stops on mid cycle after 5 minutes or so. At first I thought it was the motor but then I run it on “air dry” only and it did the full 40 minutes until it finished the cycle. Then I run it on “Delicate/Low” and again, it worked the entire cycle!

The problem was when I selected medium-High. It turned off again before it’s cycle finished.

I discarded the possibility about a bad motor and I’m about to order a sensor kit for it, but I highly suspect is the thermal sensor.

Any thoughts?

Thank you in advance for any help.

UPDATE: It is a Kenmore model :110.65922401. I've been trying to reply but the stupid website keeps blocking my comment because it says is spam. This is the fifth try.

Please do let me know what kind of part is it. And if you sell it, how much would it cost.