Thermostat, Internal-Bias

I started to repair this and got busy and ended up calling a repair service -- that was the first time. They repaired it for over $200 and said the cause was bad venting. I fixed the vent before using the fixed dryer but it blew again. So I ordered these parts and replaced them myself for a lot of savings. However, the dryer still overheated. Through lots of testing I found the root cause the repairman missed: The heating element had gotten so hot that the assembly holding it warped, hitting the element and shorting it. So a new element is on order. I still needed the parts I ordered here but the overall repair ended up more complicated and expensive. I was disappointed a paid repair person left without further diagnosis. If he had unplugged the vent and checked the heat on the exhaust vent (as I ended up doing) it would have been obvious more than a new thermal fuse/thermistor was necessary. Instead I wasted over $200 on his visit. So my advice is if you're at all handy, repair this yourself. The dryer has a service manual inside the front toe board that walks you through most diagnostics and tests. However, it took a little more than that for me to discover the heating element problem. This was a very dangerous situation that could have easily led to a fire, yet not found by a trained technician!

I replaced the thermistor and the thermostat and it fixed the problem. The recommended parts worked just as advertised. This website is great!!!!!

Put both parts in and it started (not sure if we needed both, but my husband put both in)

Had to remove the back of unit to access the area of subject part by removeing 12 to 14 screws also the gas line had to be removed. Two screws held the part in place. Unit now runs normal.Saved alot on repair costs!!!!!

I read in the forums that thermistor replacement fixed this issue 56% of the time. I replaced the thermistor and then ran three loads of clothes through a one-hour dring cycle at the highest temperature and the dryer did not shut off.

I tried to follow directions followed by others on this site after diagnosing the problem via suggestions provided by users. I have a Whirlpool Duet dryer from 2002. We've had problems since moving about 3 years ago. I removed the front panel (lower) by unscrewing the two bottom screws (1/4" sheet metal screws). Then I took out the lint screen and the metal tube/contraption immediately beneath to get access to the area where thermistor is located. See the drawing/chart to help you locate this. It's really easier than it seems. Make sure you have the chart/drawing for your model - it makes difference! The thermistor came out pretty easily with a nutdriver that has a swivel offset shaft. Ask your hardware store tool dept. about that one. Put everything back in reverse order of course and test either with/without the front panel re-attached. In my case it fixed at least part of the problem. I was able to get clothes almost dry with most settings but I have yet to install the moisture sensor to see if that helps in addition to the internal-bias thermistor. I am the kind of person that does one thing at a time so at least I now know the thermistor was bad. Good luck and hang in there with your own repair. It's a lot cheaper even if it takes you longer to do than a pro.

dryer remove bottom panel and r&r thermistor very easy to do. your self diagnose help I could not have done it

Unscrewed the bottom panelof the dryer and located the thermistor through the schematic for my machine. Removed the old one and put the new one in the same way. No more E1 problems and all cycles now complete themselves.

The repair descripition was accurate. The difficult part was getting the old switch out. It has a release clip that is hard to reach. It took several tries and a bit of force to get the old part to release from the cabinet.

In stalling the new part was easer that the instructions explaned. There was no need to split the original plug. I unplugged the old switch, plugged in the new and snapped it into place. 30 seconds after I started the reinstall it was in the cabinet and working

Videos are excellent to open and access internal parts. It turned out a rat was killed in the blower fan when we first encountered the problem. This prevented the blower from turning which interfered with motor function.

This required removing drum & belt, disconnecting motor clips, blower belt, and blower housing. The blower housing needed to be disassembled. Having a 5/16” & 1/8” ratcheting nut driver makes this process much easier. Don’t try this with a wrench.

After getting rid of the rat and decomposition, we sanitized the entire housing with soap & chlorine bleach.

Reassembly was uneventful and relatively easy. We ended up replacing 4 rollers, 2 belts (drum belt & blower belt), the thermistor which was damaged as a result of the blocked blower.