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Author Topic: Whirlpool dryer-thermal fuse keeps blowing  (Read 4968 times)

Offline daddjdom

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Whirlpool dryer-thermal fuse keeps blowing
« on: March 28, 2017, 01:05:05 PM »

Whirlpool electric dryer GEQ9800LW1

Dryer had no heat

inlet and outlet vents are not clogged.  I always keep them clean.  Air blows hard
out the exhaust vent.

Tested Thermal Cut−Off was opened.

Replaced Thermal Cut−Off and Thermostat

Worked for three minutes, then Thermal Cut−Off opened again.

Replaced Heater Element

Worked for three minutes, then Thermal Cut−Off opened again.

Any help is appreciated.

Offline AJ

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #1 on: March 28, 2017, 01:07:34 PM »
Check the blower wheel for lint build up and also make sure it's not stripped out causing it to slip on the motor shaft.


http://www.appliancepartspros.com/parts-for-whirlpool-geq9800lw1.html

Offline daddjdom

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #2 on: March 28, 2017, 01:29:17 PM »
Check the blower wheel for lint build up and also make sure it's not stripped out causing it to slip on the motor shaft.


http://www.appliancepartspros.com/parts-for-whirlpool-geq9800lw1.html

Hello and thank you for your reply.

The blower motor wheel seems to be spinning OK.  When I spin it manually, it spins about 1 1/2 times, and the drum spins a couple of inches. 

There is some drag, I assume from the motor, and I guess from years of build up, but I don't think it is anything serious.

Offline dab147315

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #3 on: March 28, 2017, 02:06:48 PM »
279769  is this the kit you been buying. Thermal cutout is rated at 352 degrees.Have you clean out the lint housing where the lint filter goes?  Lint can build up in that.  If so maybe change the cycling thermostat.Part number
WP8318268
« Last Edit: March 28, 2017, 02:08:51 PM by dab147315 »

Offline daddjdom

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #4 on: March 28, 2017, 02:16:09 PM »
279769  is this the kit you been buying. Thermal cutout is rated at 352 degrees.Have you clean out the lint housing where the lint filter goes?  Lint can build up in that.  If so maybe change the cycling thermostat.Part number
WP8318268

Thanks again.

Lint housing is totally clean.

3390291 Thermostat 250 F is the one I got.  Part number taken from whirlpool parts list...

Offline dab147315

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #5 on: March 28, 2017, 02:20:24 PM »
But thats a high limit.Is that the same one you are blowing? http://www.appliancepartspros.com/whirlpool-term-250f-170f-wp3390291-ap6008306.html 

Offline daddjdom

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #6 on: March 28, 2017, 02:21:13 PM »
But thats a high limit.Is that the same one you are blowing? http://www.appliancepartspros.com/whirlpool-term-250f-170f-wp3390291-ap6008306.html

I am blowing the Thermal Cut−Off

Offline dab147315

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #7 on: March 28, 2017, 02:22:53 PM »
Whats the part number of that?


Offline daddjdom

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #8 on: March 28, 2017, 02:23:32 PM »
Whats the part number of that?
Sorry 3977394

Offline dab147315

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #9 on: March 28, 2017, 02:29:25 PM »
Ok same part but cheaper and better to change the kit part number i gave you.When you install heater did you just slide it out of the duct or did you remove the duct if you know what i mean by that?

Offline daddjdom

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #10 on: March 28, 2017, 02:30:12 PM »
Ok same part but cheaper and better to change the kit part number i gave you.When you install heater did you just slide it out of the duct or did you remove the duct if you know what i mean by that?

I removed the duct completely...

Offline dab147315

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #11 on: March 28, 2017, 02:31:58 PM »
That duct make sure it slides into the hole of the female duct.

Offline daddjdom

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #12 on: March 28, 2017, 02:36:34 PM »
That duct make sure it slides into the hole of the female duct.

Yes sir, it is...

There is no seal...just metal to metal, there are very minor gaps...

Offline dab147315

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #13 on: March 28, 2017, 02:43:22 PM »
Maybe check with a meter that somehow the new heater is not grounded to the housing after you installed it like in this video. https://www.youtube.com/watch?v=ZNOA8JBfZ5Y

Offline dab147315

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #14 on: March 28, 2017, 02:47:18 PM »
Gasket on the door when you open it up is that still there? It's on the door that lays flat when you open it up.If all is good   change   CYCLING  thermostat.  Part number 3390736
« Last Edit: March 28, 2017, 02:50:41 PM by dab147315 »

Offline daddjdom

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #15 on: March 28, 2017, 02:50:07 PM »
[color=rgb(69, 69, 69)][font=Helvetica]3390736[/font][/color] Gasket on the door when you open it up is that still there? It's on the door that lays flat when you open it up.If all is good   change   CYCLING  thermostat.

Gasket is good.  Which is the cycling thermostat?

Offline daddjdom

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #16 on: March 28, 2017, 02:55:12 PM »
Maybe check with a meter that somehow the new heater is not grounded to the housing after you installed it like in this video. https://www.youtube.com/watch?v=ZNOA8JBfZ5Y

new heating element is not grounded to the housing...

Offline dab147315

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #17 on: March 28, 2017, 03:00:06 PM »
279769  is this the kit you been buying. Thermal cutout is rated at 352 degrees.Have you clean out the lint housing where the lint filter goes?  Lint can build up in that.  If so maybe change the cycling thermostat.Part number
WP8318268
  The last one in this post. Temperature limit 155-25F
« Last Edit: March 28, 2017, 03:02:12 PM by dab147315 »

Offline daddjdom

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #18 on: March 28, 2017, 03:02:29 PM »
279769  is this the kit you been buying. Thermal cutout is rated at 352 degrees.Have you clean out the lint housing where the lint filter goes?  Lint can build up in that.  If so maybe change the cycling thermostat.Part number
WP8318268
  The last one in this post. Temperature limit 155-25F

3390291 Thermostat 250 F is the one I got.  Part number taken from whirlpool parts list...

Offline dab147315

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Re: Whirlpool dryer-thermal fuse keeps blowing
« Reply #19 on: March 28, 2017, 03:10:48 PM »
WP8318268    This is the part number of the cycling thermostat. It is rated at 155 degree and should cycle the heat off  and on  this thermostat and if it goes bad it would blow the thermal cutout.