I have a maytag dryer (model MEDC400VW0) that fails to dry the clothes on the first load. Sometimes it takes two or three loads. I had a technician come out when it was under warranty and he said that the temperature sensor were working fine. But it used to dry in one load and now it doesn’t.
The most common cause of this is the vent system.
Unplug the unit and disconnect it from the vent system.
Now try a run.
If it now dries OK odds are the vent system needs checking/cleaning.
Be sure to check that the louvers on the outside of the house open correctly.
If you do not want any lint in the house.
Take a pair of pantyhose.
Put one leg into the other and then attach this to the dryer’s vent.
Leave enough room so the pantyhose can balloon out like a windsock.
Both the above will let you check the temperature and the air flow.
Note: The above is not recommended for gas dryers due to carbon monoxide concerns.