The vent is not clogged, nor does there appear to be any build-up of lint. It will not heat
Up to dry clothes. There is no error message this time. I seem to have had problems
Annually with this unit but my warranty has since expired.
I've read many of the previous responses to similar questions. I would like to test the
Continuity of the thermostat, I just don't know which piece is the thermostat.
Please advise.
Thank you.

The thermostats are round disc like. One at the top of the element housing and one at the bottom