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Appliance Repair Blog

How To Test Frigidaire Thermistor 134587700

Posted on July 14, 2014

Newer Frigidaire and Kenmore dryers use a thermistor sensor to control the temperature inside the dryer. A thermistor is a type of resistor that varies it’s resistance with the change in temperature. When the thermistor fails, it can cause the dryer to not heat at all, get too hot, or sometimes it will throw an E24, E25, or F02 error code (open or shorted thermistor) on some models.

Here is how to check/test the Frigidaire 134587700 thermistor:

  • Before working on your clothes dryer, make sure it is unplugged.
  • First remove the thermistor sensor from the dryer. The thermistor is located on the blower housing next to the blower wheel.
  • With the thermistor removed from the dryer, you will need to use an ohm meter or multi-meter to measure the resistance of the thermistor.
  • Place one of each of the probes from the meter on each terminal of thermistor. With the thermistor at room temperature, the thermistor should read approximately 50-53k ohms. If the thermistor is off by more than 10% then the sensor will need to be replaced.

Here is a reading from a bad sensor (0.05k ohms):

134587700_bad

If you have a bad thermistor sensor and need to purchase a new one, please click the link below:

Dryer Thermistor Control – 134587700

15 Thoughts on "How To Test Frigidaire Thermistor 134587700"

  1. jeff Posted on July 25, 2014

    I have a whirlpool duet model #gew9200lwo wont heat took bottom panel off turned it on and heating element started to glow but went off after 20 seconds or so i have continuity on the heating element thermal fuse thermostat and thermal cut off. Can the thermistor be the problem thats making the heating element shut off or do you think it would be the main control board

    • Ryan Posted on September 10, 2014

      A bad thermistor, bad main control board, or blocked exhaust venting could cause it to act this way. Try temporarily disconnecting the venting and run the dryer without the vent attached to see how it acts. If you need more help with this, please post your questions on our repair forum.

    • Zen Posted on January 19, 2015

      Had similar problem with my Kenmore electric dryer. troubleshooting instructions I used pointed to main control board (heater relay). I replaced the board but the problem persisted. Later I found the thermistor in the exhaust manifold. It read ~16k Ohms (instead of close to 55). I removed it, it was covered with lint. I cleaned it and checked with ohm meter again. This time resistance was in the 55k ohms at room temperature. Put it back in and the dryer works (for now). not sure if it was the cleaning or physically disturbing the thermistor that got it to work again.

      • Ryan Posted on January 19, 2015

        Lint build up on the thermistor can cause the temperatures to be off, but it shouldn’t cause the ohm reading to be off as far as yours was. If it continues to give you problems then it would be a good idea to replace the thermistor.

  2. Jay Posted on November 18, 2014

    I have tested my 134587700 Thermistor and it has no continuity. I replaced the part, bench tested it and it gave me the same reading. I replaced that part and still no continuity. HELP>>>>>

    • Jay Posted on November 18, 2014

      Ugh. With egg on my face, my 11 year old son, says “Did you try a different setting” on the multimeter. “Of course son” I say with an irksome attitude. He turned the dial one more click and low and behold, it worked. Dang it anyway. Got the correct reading this time. Old one was still bad, but the new one that I thought didn’t work did. Good thing I didn’t open the package of the replacement to the replacement. I’ll return it.

  3. Robert Braun Posted on April 12, 2015

    I have a frigidaire dryer and I get no continuity when I check the control thermistor. My dryer won’t start and the thermal fuse and door switch check out. What reading should I get?

    • Ryan Posted on April 13, 2015

      A continuity test will not work for the thermistor. You will need to test it using an ohm meter using the process described at the top of this page.

      • Wil Posted on May 21, 2015

        I have tested the thermistor after removing it out the dryer thanks to your video, my amazement the ohm reading at room temperature was around 63-64 ohms which is more than the chart. does this mean it was bad as well? bought it anyways. will check new thermistor if it has the same reading. temp during testing was around 64 F. Just want to know if the reading were normal or above the specs.

        • Ryan Posted on May 22, 2015

          The 50-53k ohm specification for this thermistor is at room temp (71-72F). My guess is that since you were testing the thermistor in a colder environment that it is probably good. Try testing the thermistor at 71F and see what reading you get.

  4. Al Posted on November 8, 2015

    Hello, the thermistor on my Affinity AEQ6000ES tests out at 43.4k ohms. Did you mean to say the acceptable range is 50 ohms to 53k ohms, or 50k ohms to 53k ohms? The 50-53k ohms notation is somewhat ambiguous. Thanks for clarifying.

    • Ryan Posted on October 25, 2018

      50k-53k Ohms

  5. Jessie Posted on October 25, 2018

    I am trying to figure out why my dryer is running but not heating, it has done this intermittently (no heat for a week or so while we fiddle on things and then it starts operating fine for awhile, then repeat) the entire 2 years we’ve owned it. We have replaced the heat sensor, and the gas coils. There is a d17 red light on the mother board that is blinking, but I cannot find ANY information about what that means ANYWHERE. My thermistor (134587700) is reading at 56 or 57 in my house at 71 degrees inside. Is this enough of a variance that it could be why the dryer is not igniting the gas…? Frigidaire model FFLG1011MW2. My next guess is I just need to buy a new mother board, but as I’m not sure that is the issue, I’m afraid to buy a $90 part if I’m wrong… Thanks for any advice!

  6. adan Posted on January 20, 2020

    I’m glad to find this info, I was looking for the datasheet on this thermistor but never occurred me to look for “how to test”

    mine is 44 K ohms and according to the +- 5% I’m off just by a little bit. Will that be enough to fail?? I’m not sure about room temp when I tested it but it was not more than 80.

    thanks!!!

    • Ryan Posted on January 20, 2020

      That is borderline. You might want to doublecheck your temp you are measuring the thermistor at.

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