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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.

6 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.

    • 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.

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