Author Topic: 70 series Kenmore electric dryer spins but does not heat  (Read 45350 times)

Offline JWWebster

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Re: 70 series Kenmore electric dryer spins but does not heat
« Reply #30 on: March 29, 2010, 01:27:09 PM »
Is it the top one shown here the one that keeps blowing?
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Offline utee94

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Re: 70 series Kenmore electric dryer spins but does not heat
« Reply #31 on: March 29, 2010, 02:30:36 PM »
Yes sir, that's the one that keeps blowing. 

And I honestly WISH the vent looked like that, then I might have some explanation for why it keeps blowing.  :(

Thanks for your time,
-Marcus

Offline Mr. Fix-It

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Re: 70 series Kenmore electric dryer spins but does not heat
« Reply #32 on: March 29, 2010, 02:35:34 PM »
How long is your vent and how many bends does it have?

Offline JWWebster

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Re: 70 series Kenmore electric dryer spins but does not heat
« Reply #33 on: March 29, 2010, 02:41:30 PM »
You is gonna have to unclog that vent. Just an itty bitty bit of crap in there is all it takes.
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Offline utee94

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Re: 70 series Kenmore electric dryer spins but does not heat
« Reply #34 on: March 29, 2010, 03:36:39 PM »
The vent duct is about 3' long and has two 90-degree elbows on it, one immediately after the dryer outlet, and one immediately before the exterior vent assembly that goes through the exterior wall. 

Offline Mr. Fix-It

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Re: 70 series Kenmore electric dryer spins but does not heat
« Reply #35 on: March 30, 2010, 06:39:41 AM »
That rules out a too long vent. Did you check the blower to see if it was loose or slipping?

Offline utee94

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Re: 70 series Kenmore electric dryer spins but does not heat
« Reply #36 on: March 30, 2010, 08:00:51 AM »
That rules out a too long vent. Did you check the blower to see if it was loose or slipping?

When I had the lint chute off for cleaning, I spun it to see if it had any dirt buildup within its fins, and it seemed to spin okay.  But I can certainly check again-- anything to keep from trashing this unit and buying a new one.

Thanks as always for your help.

-Marcus

Offline jumptrout51

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Re: 70 series Kenmore electric dryer spins but does not heat
« Reply #37 on: March 30, 2010, 03:06:25 PM »
Did you replace the Hi-limit t-stat as well as the thermal cut off?
If not you should.
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Offline JWWebster

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Re: 70 series Kenmore electric dryer spins but does not heat
« Reply #38 on: March 30, 2010, 04:36:11 PM »
The larger limit at the base is supposed to trip at 250f the smaller one trips at 300f
If the smaller one on top is tripping that means the bigger one on bottom is bad also.
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Offline Mr. Fix-It

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Re: 70 series Kenmore electric dryer spins but does not heat
« Reply #39 on: March 31, 2010, 07:38:59 AM »
Have you tested the operating temp of the unit? It could also be the operating thermostat that is allowing it to overheat.

Offline utee94

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Re: 70 series Kenmore electric dryer spins but does not heat
« Reply #40 on: April 01, 2010, 09:49:17 AM »
Thanks for the input.  I did not replace the thermostat at the bottom, since it tested okay for continuity.  But I will ahead and replace that one.

How can I test the operating temperature of the unit?

Thanks!
-Marcus

Offline AJ

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Re: 70 series Kenmore electric dryer spins but does not heat
« Reply #41 on: April 01, 2010, 09:59:39 AM »
Thanks for the input.  I did not replace the thermostat at the bottom, since it tested okay for continuity.  But I will ahead and replace that one.

How can I test the operating temperature of the unit?

Thanks!
-Marcus


Both of the thermostats on the heating element come in a kit.

Part # 3977393




The reason they come together in a kit is because they both need to be changed at the same time.

It does not matter if one or the other checks good. If one of them is bad then you need to install both of the new thermostats that come in the kit.

If you do not then you take the chance of them going bad again.
Hope you find our site helpful.

Offline utee94

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Re: 70 series Kenmore electric dryer spins but does not heat
« Reply #42 on: April 01, 2010, 11:25:27 AM »

Thanks for the explanation AJ, I'll be sure to change them both out this time.

Should I also check the operating temperature of the unit as Mr. Fix It suggested?  And if so, how might I go about doing that?

Thanks again,
-Marcus

Offline AJ

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Re: 70 series Kenmore electric dryer spins but does not heat
« Reply #43 on: April 01, 2010, 11:50:58 AM »
Your operating thermostat is part # 3387134.




Be sure to clean the lint out of the vent and from around the blower housing.

It would not hurt anything to check the operating thermostat.

The cut out temp is stamped on the thermostat. To check the operating thermostat you will need to measure the air temperature inside the dryer drum or at the exhaust.

If in doubt you may just want to replace the operating thermostat as they are not that expensive.
Hope you find our site helpful.

Offline Mr. Fix-It

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Re: 70 series Kenmore electric dryer spins but does not heat
« Reply #44 on: April 01, 2010, 12:44:08 PM »
I use a oven thermometer that you can buy at any department store for about $5. You just put it in the vent with the vent hose off and run the dryer empty, on high you should be around 150 degrees if it gets much hotter than that replace the thermostats.

 

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