Picture of Dryer won't heat up
 The other day I noticed that the load of clothes was taking forever to dry.  I opened the dryer door and everything was cool to the touch.  I will try to show you how I troubleshot this problem.  Hopefully it will be informative.  This was a Kenmoor series 90 dryer.

Step 1: Unplug the dryer

Picture of Unplug the dryer
First pull the dryer out away from the wall and as with all things electrical, unplug it! 

I had the same problem, or same symptoms anyway. Our heating element was Okay but it turned out to be the thermal fuse. A $15 part that cost me almost $200 to get installed. Two screws and two wires. Every time I hire a repairman I kick myself when I see how easy the repair is. Thanks for your helpful post!

kramler6 months ago

Great instructable, very helpful and informative. I also found this link helpful in explaining what each part does http://applianceassistant.com/Dryer-Repair/How-Ele...

Phil B4 years ago
We had a dryer that heated up, but did not dry the clothes. It turned out to be a blockage in the vent pipe. The venting went under the house and ran for about 40 feet. The elbow where the duct went from vertical to horizontal under the house was the low point. Water, probably from condensation, had collected there and completely blocked air flow. We determined that the dryer produced adequate heat, but there was no air flow at the trap door flap on the side of the house. We suspected it was blocked with lint. A long brush for the purpose of cleaning dryer vents came up very wet when we sent it down the tube. That helped a lot in identifying the problem and its location.
Phil B4 years ago
I do not know how I missed this. Very well done! This is very helpful. Thank you.