Cycling Thermostat - 4 Wire

It was actually my father, he doesn't use the internet. He thought that because the dyer got real hot and then shut off he thought the thermostat wasn't working and the high temp shutoff was okay. He went through the manual and found the part and took it out. He called the service number but they wanted $50 dollars plus shipping. I saw it was a Thermo-disc part so I tried the manufacture's website but I couldn't match the numbers on the back to their part numbers. I tried several other sites and your site was the cheapest. It was real easy to use the web site and diagrams to find the right schematic and part. I ordered it online and it was delivered in 2 days with the regular shipping. When he first put it in the dyer didn't turn on. He found no power coming out of the timer so he cleaned the contacts and it worked. Thanks for making the ordering so easy.

Replaced cycle thermostat.

I reviewed the video instructions on the website; these were invaluable to understand the task. Since the dryer drum had to be removed to replace the thermostat, it was prudent to replace the drive belt at disassembly. Great job on the videos to see the extra effort required to install the new belt around the tensioner pulley while supporting the drum. I will use this site again when a need arises, because they are quick to ship the ordered part(s) and help the DIY handyman make repairs via the videos.

Took the few screws out replaced the part then put it back together.

Checked the fuse box to see if any breakers tripped on the two 120 lines feeding the dryer.

Checked for clogged exhaust vents/hose/etc, cleaned.

Some paint flaking off inner drum around heat vent.

Unplug & disassembled unit. Took pictures for reference to help with reassembly later. Upon removing drum, found sagging heat coils, one broken, some heat damage to the housing near the top. Determined that more than just coils needed replacing.

Also checked each of the three heat sensors (cycling thermostat, high limit thermostat & safety thermostat) with the digital multimeter. All were positive continuity for low temps.

Tested ONLY the cycling thermostat on the kitchen stove with burner set to warm. Check burner temp with meat thermometer to see it exceed 120F. Continuity broke at high temp. Although the cycling thermostat seemed ok with my generic test, I decided to replace it anyway.

My understanding of the Safety Thermostat & High Limit Thermostat is that they work like safety fuses, breaking at dangerous temps, but not resetting afterward. So these were only tested at room temperature, not with heat.

With the unit open, I checked other components for signs of wearing out. Also cleaned the unit more thoroughly.

Reassembled in stages. The belt is the trickiest part to get back on the motor & tension pulley, it's just a little awkward to reach. Tested to make sure the drum moved freely and belt was correct before finishing the reassembly.

Checked to make sure the dryer was still level, after all the moving around, disassembly & reassembly.

Ran several supervised test loads. Felt the temperature. No tripped breakers or smoke. Exhaust was flowing unhindered. Clothes got dry.

watched vidio from the site.just follow the instructions, And was able to fixed the problem.

By watching your video which was very helpful as I never made this repair before. All worked out fine. Since then I have ordered other parts., (drum bearing kit, door slides and a new belt.) The video on replacing the drum kit is very helpful too. One other fact is prices beat all other sites I looked and when I'm done the dryer will be "rebuilt" I recommend your parts to everyone., they are great quality.