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Appliance Repair Blog

How to test Whirlpool Thermistor Part # WP8577274

Posted on July 21, 2017

Whirlpool thermistor part number WP8577274 is used on many Whirlpool model dryers including some Maytag , Amana, Kenmore, Crosley and Inglis model dryers. When this thermistor fails it can cause your dryer to stop running or not heat correctly and display a F-22, F-23, E1, or E2 error code. If you are receiving either any these error codes you should test the thermistor.

Click the link below to purchase this part from our online store:

Whirlpool OEM part number: WP8577274 (PD00002401)

Tools required:
Multimeter or Ohm meter

This thermistor replaces these parts numbers:
3390292, 3406294, 3976615, 772546, 8577274, 1181075, AP6013514, PS11746740, EAP11746740

Resistance Chart:

Thermistor Resistance Chart

Video Transcript:

Hi this is Ryan with Parts Dr, and today I am going to show you how to test the thermistor on your dryer to see if it is good or bad.  This thermistor is a temperature sensor that measures the exhaust air temperature inside the dryer for the control board so it can maintain the desired temperature inside the dryer.

When the thermistor fails it can cause the dryer to display a F-22, F-23, E1, or E2 error code.   The dryer can display one of these error codes if the thermistor is shorted or open.

To test your thermistor you will first need to unplug the dryer, disconnect the wires to the thermistor, and remove the thermistor from the dryer.  Using a multi meter you will need to do an ohm test to check the resistance of the thermistor.  It is important to note that you can NOT do a continuity test on a thermistor.  Thermistors have a high ohm value that won’t register on a continuity test on most multimeters.  If you have an auto ranging multimeter, then turn the meter to the ohm setting.  If you have a manual ranging multi meter you will need to set the meter to the 20K or 40K setting.

Place one of each of the meters probes on each of the thermistors wire terminals.  A good thermistor should have an ohm reading around 11K Ohms at room temperature.  If your ohm reading is far higher or lower than this then you should replace the thermistor.  The resistance value of the thermistor varies depending on the temperature of the dryer, here is a chart that shows the different resistance values at different temperatures.

If you find that you have a bad thermistor and you need to purchase a new one, you can purchase one from our online store by clicking the link in the description below.  Please subscribe to our youtube channel for more appliance repair videos, and if you found this video helpful please click the thumbs up button below.  You can also stay up to date by liking us on our Facebook page, and following us on Twitter.

12 Thoughts on "How to test Whirlpool Thermistor Part # WP8577274"

  1. Jose Pineda Posted on March 1, 2019

    At room temperature my thermistor is reading 15.5 is that to much over?

    • Ryan Posted on March 1, 2019

      Yes that is far enough off that the thermistor should be replaced.

      • Cody M Jay Posted on July 17, 2020

        Mine is at 13.9 at 70degrees

    • tom Posted on April 1, 2019

      what would you say is to far over 11? mine is at 12.2 at room temp, 68 degrees

      • Ryan Posted on April 1, 2019

        I think yours is most likely good

  2. Brea Posted on May 11, 2019

    Mine is reading 9.2 at room temp. ~73F. Does it need replacing? Unit won’t start and other fuses testing fine.

    • Ryan Posted on May 12, 2019

      That is far enough off that we would recommend to replace it. We are not sure if it is relating to the problem with your dryer not starting. Typically if that is the case it will throw an error code for a bad thermistor.

  3. Jeff Posted on January 10, 2021

    I just tested my thermistor on a Kenmore dryer. Part#85772. Using the 20k OHM setting, mine read 15.9. Is that too high? What does this mean?

    • thermalstuff Posted on February 19, 2021

      If you look at the table on this page, 15.9 would correspond to a temperature below 60F, so unless you’re doing this measurement outside, the thermistor is not measuring correctly.

  4. Peter Posted on March 6, 2021

    I have a maytag LSE 9900 dryer.
    The thermistor part number is 3-06056.
    The dryer produces no heat. The motor runs. Display panel appears normal. Also, no heat on timed dry. I tested the resistance On thermistor as per your video. It reads 130.2 k ohms at room temp. My scale ranges on the meter are 2k then 200k . Im assuming i need this part. Do you sell this? I searched the local parts places and was unsuccessful. Can you recommend a similar thermistor that will run in this unit?

  5. Jeff Posted on February 18, 2023

    My (10-year-old) Whirlpool Duet (model # WGD97HEXW1) dryer’s symptom is that it does not get hot and/or for long enough, and the clothes take a couple cycles to completely dry. This has progressively gotten worse until today when the clothes were still very wet after an hour in the dryer.

    I completed disassembled and cleaned-out all of the vent passages and every other speck of lint throughout the chassis, plus cleaned-out the exhaust ducting in the wall.

    I removed the thermistor and it tests at ~8 Ohms @ 75°. I’m guessing that reading indicates a defective unit?

    In either case, I ordered a replacement as it is inexpensive enough that it cannot hurt to replace it. However, if you’re expertise suggests another culprit(s) to check, please advise.

  6. Scott Posted on March 12, 2023

    Is 13.7 to high?
    No code came up just 3 beeps when trying to start

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