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Customer Questions and Answers for Thermal Cut Off Kit by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM9282978
Manufacturer Part Number: 279973

The Thermal Cut-Off Kit is an OEM replacement part for Whirlpool dryers, responsible for protecting the dryer from overheating by interrupting the power flow to the heating element if the dryer air temperature reaches a dangerously high level.  

Symptoms of a bad Thermal Cut-Off Kit include:

  • The dryer not heating up 
  • Excessive heat buildup within the dryer drum 
  • Clothes not drying properly  

Causes of failure can include restricted airflow from a clogged lint filter or venting system or a malfunctioning heating element causing excessive temperatures. These issues can lead to the thermal cut-off being triggered to prevent overheating, necessitating the replacement of the kit.

This OEM Whirlpool part can also be used on Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore/Sears brand appliances.

Note: It's possible some models may use part number 280148 in place of this. Look at photo's for verification.

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Questions & Answers

For Whirlpool Thermal Cut Off Kit (Part Number: OEM9282978)

1 Answer

Tim, The most likely cause for the issue with the thermal fuse blowing is a restricted duct but with the duct being clean would most likely be a cycling thermostat or thermistor which ever the unit will have. Yours would have a thermistor part number WP8577274.

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Joe for Model Number GEW9200LW0

I have a Whirlpool duet dryer, a few weeks ago the clothes stopped drying so first thing I did was replace the thermal fuse. Then they still weren't drying so then I found out that the heating element wasn't going on and was broke so I replaced that and thought it would work fine then but still clothes were coming out damp. Lastly, I changed the moisture sensor bar and still the same results. The vent is clear, I went outside to see if the vent door was opening all the way while on and it is blowing hard. I was thinking to just buy the thermal kit and replace the thermostat and fuse again. Do you think that will solve the problem? Thanks. Joe

1 Answer

Hello Jamie! Part number WP8557403 is your high limit thermistor and you'll have to order that separate. The manufacturer is offering your thermal cut off in a kit only but the the high limit thermostat included is not compatible with your unit. Hope this makes sense!

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1 Answer

Jack, The first thing you will want to do is to check the venting of the unit and if this checks ok then you will want to check for a grounded heating element. Also check for any wires that would be damaged.

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2 Answers

Teresa, The thermal fuse would not be the issue with it because if the fuse was bad it would cause the unit to not start back up. This issue would most likely be an issue with the control board of the unit even if it looks good.

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2 Answers

Teresa, When you cleaned the dryer, did you notice a heavy build up of lint, on or in the motor ? An overheating motor will produce an odor similar to what you described. You'll also want to check and make sure you have 120 VAC into the motor relay(blue wire) and out to the motor (black wire) on the control board. Low voltage and/or loose connections can cause a motor to overheat and shut off on the overload protector inside the motor.

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