Product review (5 stars): Easy to install
We kept getting a F70 trouble code on our Whirlpool duet dryer.  The manual in the dryer mentioned the F70 recommendation was to replace the  circuit board.  I read on another forum to try changing the thermistor first before replacing the expensive circuit board.  I did and have not had an issue since.

Easy to install.  Just don't follow the directions of online repair companies.  You can access the thermistor from the lower front panel without taking off all upper components and drum.

Cheers to the fix.  It worked.