Customer Questions and Answers for Thermistor by Whirlpool

Hello Morty. You need to check the door switch W10702726 and the thermal fuse WP3392519. If bad, they will prevent the unit from running properly. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html

Hello Bunny, You want to check the moisture sensor and control. There is should be a tech sheet with your unit, probably in the area of the control or inside control panel. Page 7 and 8 will tell you the steps to take to check the moisture sensor and board. It will also tell you how to access the diagnostic mode.

Hello Rich, I would check your venting and duct for any restrictions. Clean out any lint or blockages you find. Here's a link with help to narrow down your problem if that doesn't make a difference. Look at the section about "Takes too long to dry". Thanks! http://www.appliancepartspros.com/repair-help/dryer-repair-help.html#electric

Hello Dianne, To access thermistor you would remover the lower access panel. The blower housing is where the thermistor is located and is held in by 2 screws that are 1/4" hex head. Remove the screws switch wire to new thermistor and reassemble.

Hello Meter, You may want to check you door switch 279782. If door switch is faulty lights will come on but unit will not run. Using multi-meter check continuity of switch to ensure that it has continuity when closed. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html

Hello Dennis. If the dryer is heating, It sounds like the venting system is clogged or kinked. You will need to check the vent and clean it out. Be sure and clean the vent pipe and the dryer air duct assembly. If the air flow is not good, the unit will retain moist air causing the clothes not to dry. Try running the unit with the vent unhooked from the back of the dryer and see if the dryer works properly.

Jeff, Yes the thermistor WP8577274 operates in place of the cycling thermostat. It should have a resistance of 10,000 ohms resistance at room temperature. The thermistor is a "NTC" (negative thermal coefficient), the warmer the environment the resistance drops (100 dgrs. F. = 5.0 to 7.0 k ohms resistance). Your most likely issue is the drum moisture sensor bars WP3387223 or the wiring to the control board. If the bars don't sense the moisture in the clothes, or the wiring has a short to ground, the control senses the clothes are dry and shuts off, prematurely. Check the wiring and clean the sensor bars, with rubbing alcohol, then test the sensor circuit at the P2 connector on the control board, it should be an open circuit from each wire to chassis ground, and open circuit across both wires, then when you place something wet or metal across the two bars, there should be a resistance reading across the two wires.

Hello Lester, This is usually an indication that the centrifugal switch in the motor 279787 has failed.

Hello Bill. It sounds like the venting system is clogged or kinked. You will need to check the vent and clean it out. Be sure and clean the vent pipe and the dryer air duct assembly. If the air flow is not good, the unit will retain moist air causing the clothes not to dry. Try running the unit with the vent unhooked from the back of the dryer and see if the dryer works properly.

Hello Andy. Based on the information you provided, you will need to replace the door switch WP8283288.