Model MEDE300VW0 Maytag dryer Dryer fuse was burnt so replace fuse and exhaust thermistor because had code f23 and checked heater for shorted out against housing and was ok .and vent was clean. Dryer gets hot on air dry and gets real hot when drying. And could I get part no. for what you think it could be. THANKS!!

It sounds like the heater relay on the main control is stuck which has the heater on at all times not allowing it to cycle. The main control will have to be replaced. The control you need is for that model is linked below:

https://prismparts.com/products/whirlpool-dryer-main-electronic-control-board-pp6826106?_pos=1&_sid=9f0670fd8&_ss=r