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Forum Index => Dryer Repair => Topic started by: llew_x on February 16, 2009, 05:26:05 PM

Title: 70 series Kenmore electric dryer spins but does not heat
Post by: llew_x on February 16, 2009, 05:26:05 PM
Hi,

I have a 70 series electric Kenmore dryer that I've been using for about 4 years. It's worked great up until tonight when I went to take my clothes out and they were still very damp. I reset the timer and checked it again about 40 minutes later and the clothes felt the same.

I bought this dryer from a Sears outlet store that sells appliances at slightly (supposedly) reduced price because of cosmetic flaws and I don't have a user manual or any exploded views of the inside of the dryer. I have a gut feeling from reading some other posts that It's probably my coils? I'm not sure but I do need some help and was hoping someone here could please give me some assistance.

Thanks,

Model 110.66752500 (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252Fmodelsearch_model.aspx%253Fmodel_id%253D5426121&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252Fmodelsearch_model.aspx%253Fmodel_id%253D5426121)
llew
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: JWWebster on February 16, 2009, 06:32:22 PM
check the vent. If it looks stopped up then the high limit is blown. Mounted on top of the heating element.
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: jumptrout51 on February 16, 2009, 06:48:42 PM
Are the clothes hot and damp or cold and damp?
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: llew_x on February 16, 2009, 07:29:37 PM
The clothes are cold and damp.

I did take the vent hose off and ran the dryer...all that came out of the vent was cold air.

-Llew
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: jumptrout51 on February 17, 2009, 06:25:03 AM
With your volt ohm meter (VOM) check for 220 volts at the terminal block the cord attaches to.
If 220 is present, unplug the dryer and remove the rear panel.
With meter set to continuity check the thermostats and fuses on the heater as well as the heater coil. Remember to unplug the wires to each component to check them correctly.
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: llew_x on February 17, 2009, 02:10:08 PM
I finally got home from work and had time to fiddle with this thing a little bit.

It seems like I have continuity on everything I put my leads to.

Just to clarify what I'm looking at... The thermostat is located in the vent just upstream from where the vent hose connects?

The fuse is located near the bottom of the heating element?

I took some pictures but I can't post them because they're too big.

-Llew
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: Repair-man on February 17, 2009, 04:01:13 PM
(http://appliancejunk.com/forums/index.php?action=dlattach;topic=3167.0;attach=5208;image)
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: jumptrout51 on February 17, 2009, 04:30:53 PM
Where Repairman said "cord goes here". Did you read 220 volts?
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: llew_x on February 17, 2009, 05:52:18 PM
Repair-man, thank you for the pic that points everything out!

There are 4 wires from my plug, a black on the left, white in the middle and red on the right and of coarse the ground in upper left. While plugged in my volt meter reads 247V with the leads on red and black, O.L. if on black and white or red and white.

-Llew
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: jumptrout51 on February 17, 2009, 06:26:55 PM
You either have your meter set wrong or you have a neutral wire problem.
You should read 120 volts from black to white and red to white for a complete circuit.

Look closely at the wires at the terminal for a burned wire.
No burned wire, open the wall outlet and inspect the wires and the female connections.

Read voltage at the wall connection for 220 volts and 120 volts from hot to neutral on both legs.
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: llew_x on February 18, 2009, 05:33:37 AM
OK, I just went and checked it again. I must have got mixed up plugging and unplugging the cord. My multimeter is definately set to measure V/AC.

From black to white or redt to white it's 120V.

Black to red is 245V. The receptacle does say 30A -125V/245V.

So i'm going to go back at it when I get out of work today to recheck the thermostats and fuses and heater coils.
In an earlier post you mentioned to make sure I unplug the wires going to each component before I check them. Should I unplug both wires or just one? And as long as I get any reading other than O.L. then that means there should be continuity and the component is working, correct?

I really do appreciate your help!

-Llew

Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: JWWebster on February 18, 2009, 08:52:30 AM
With the power disconnected you should take at least one wire off each thermostat and limit just to be sure you don't somehow get a false read. 
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: JWWebster on February 18, 2009, 08:57:07 AM
If it runs at all and the heating element is OK then you most likely need a limit kit. It mounts on the element canister.

Dryer Thermal Cut - Off Kit, part number: AP3094244 (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx)

(http://appliancejunk.com/images/ordernow.gif) (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx)
(http://www.appliancepartspros.com/partpic/Z3BqLjBfbXNfNjE4OTcyL0xQVy9zb3RvaHB0cmFwLw%3d%3d.jpg) (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx)
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: llew_x on February 18, 2009, 08:59:50 AM
I'm sorry, I'm not too sure what you mean by "limit" after diconnecting at least one wire from each thermostat. Could you please further explain?

I really don't mean to sound stupid but I don't want to pretend I understand advice being given when I don't fully understand... I just want to get her fixed and be up and running again.

-Llew
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: JWWebster on February 18, 2009, 09:08:51 AM
You dryer has a series of safetys. If the control thermostat fails, the filter housing gets blocked with lint, or the vent gets stopped up  the heat could cause a fire. The bottom cannister thermostat limit is the lowest temp one 250F, it should shut down first if it fails then the limit mounted at the top of the cannister is set to Blow at 300F When it blows that is an indication of an external vent blockage. If the problem is from within the dryer then the fuse mounted on the blower housing will blow an the dryer won't run. The fuse is rated at 350F and is tied into the door switch. That is why the wires are smaller. They don't carry the heat load. If the duct fuse blows it is the same as if you opened the door. The dryer simply quits running.
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: llew_x on February 18, 2009, 11:22:29 AM
OK, good news...I think.
An electrician friend of mine from work came over the house to take a look at the dryer today.
With the dryer plugged in he checked terminal where the plug is and then started checking the fuses and thermostats. Everything seemed ok until he put his leads across heating coil terminals and found it to have no continuity.
We removed the heating element and found where a section of the coil was broken.

So I'm happy now that I believe I know what the problem is and all I need now is a part number for the heating coil.
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: llew_x on February 18, 2009, 11:53:14 AM
Ok, so i clicked the link at the bottom of the page for Sears/Kenmore parts delivery, putt in model # in the appropriate field and couldn't come up with an exact match. It gave me 13 or so of the closest matches, the 3 listed that weren't coin operated look to be exactly like what I have....except one thing. The picture shows 3 different views of my heater element and none of those views is showing the High limit thermostat. Shouldn't the new heater come with the thermostat?

The part # I have, at least what I think it's supposed to be is AP2974879 (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-heater-element-item-number-ap2974879.aspx&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-heater-element-item-number-ap2974879.aspx)

(http://appliancejunk.com/images/ordernow.gif) (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-heater-element-item-number-ap2974879.aspx&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-heater-element-item-number-ap2974879.aspx)
(http://www.appliancepartspros.com/partpic/Z3BqLjBfbXNfNTYwODkzMy9MUFcvc290b2hwdHJhcC8%3d.jpg) (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-heater-element-item-number-ap2974879.aspx&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-heater-element-item-number-ap2974879.aspx)
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: AJ on February 18, 2009, 01:58:48 PM

Quote
So I'm happy now that I believe I know what the problem is and all I need now is a part number for the heating coil.

Heating Element Factory Part Number: 279838 (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-whirlpool-dryer-heating-element-item-number-ap3094254.aspx%253Fpn_%253D279838&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-whirlpool-dryer-heating-element-item-number-ap3094254.aspx%253Fpn_%253D279838)

(http://appliancejunk.com/images/ordernow.gif) (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-whirlpool-dryer-heating-element-item-number-ap3094254.aspx%253Fpn_%253D279838&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-whirlpool-dryer-heating-element-item-number-ap3094254.aspx%253Fpn_%253D279838)
(http://www.appliancepartspros.com/partpic/Z3BqLjBfbXNfODM4OTcyL0xQVy9zb3RvaHB0cmFwLw%3d%3d.jpg) (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-whirlpool-dryer-heating-element-item-number-ap3094254.aspx%253Fpn_%253D279838&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-whirlpool-dryer-heating-element-item-number-ap3094254.aspx%253Fpn_%253D279838)


Quote
Shouldn't the new heater come with the thermostat?

No

The high limit thermostat that is on the heating element is part number 3977767 (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-hi-limit-thermostat-item-number-ap3131941.aspx%253Fpn_%253D3977767&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-hi-limit-thermostat-item-number-ap3131941.aspx%253Fpn_%253D3977767).

(http://appliancejunk.com/images/ordernow.gif) (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-hi-limit-thermostat-item-number-ap3131941.aspx%253Fpn_%253D3977767&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-hi-limit-thermostat-item-number-ap3131941.aspx%253Fpn_%253D3977767)
(http://www.appliancepartspros.com/partpic/Z3BqLjBfbXNfNzY3Nzc5My9MUFcvc290b2hwdHJhcC8%3d.jpg) (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-hi-limit-thermostat-item-number-ap3131941.aspx%253Fpn_%253D3977767&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-hi-limit-thermostat-item-number-ap3131941.aspx%253Fpn_%253D3977767)
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: JWWebster on February 18, 2009, 04:49:25 PM
a 279838 (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252Fpartsearch.aspx%253Fpn_%253D279838&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252Fpartsearch.aspx%253Fpn_%253D279838) is the 2nd highest priced of the 3 most popular.
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: llew_x on February 18, 2009, 08:17:19 PM
Ahh, cheap is good.

Question though....the terminal of the heater coil and the high limit thermostat are bussed together by what looks like either a spot weld or somehow crimped together. There's 3 little dimples that seem to be keeping the 2 components together.

Should I drill a hole in each and nut and bolt the two together?
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: JWWebster on February 18, 2009, 08:36:01 PM
The limit will come off with a screwdriver. Just prise it off there. No drilling needed. The heating element does not come with a limit. You must use the old one.Slide a thin blade under the fat lug to the heating element and it will come right off.
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: llew_x on February 19, 2009, 06:26:21 AM
You guys are the best!

Does anybody know of a parts store in Eastern MA that I might be able to go and pick up the heater element myself instead of waiting for delivery?
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: dsekely on October 28, 2009, 09:49:04 AM
does it matter that the replacement part you suggested is only 5200W?  The part that came off my dryer is 5400W
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: utee94 on March 18, 2010, 05:05:34 PM
I was searching through the site and found this thread, which helped me on my Kenmore dryer problem back in December.  At the time, I found that my thermal cutout had no continuity and all other fuses/cutouts/limits were okay.  So I replaced that part, and the dryer began working once again.  In fact, it worked better than it had in probably years, drying clothes hotter and faster.

I'm not sure why the cutout died, I checked the exhaust vent and it was clear, and didn't notice any other issues.  I clean the lint trap regularly, pretty much every load or every other load.

But, once again, my thermal cutout has died, and I'm not certain why.  I'm hoping one of you experts might be able to help me out?

For reference, this is a Kenmore Series 70 Electric Dryer, "Extra Capacity" and was purchased in 1998.



Thanks in advance!
-Marcus
 
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: JWWebster on March 18, 2010, 05:43:28 PM
Remove the lint chute, the the big old box the filter lives in, wash it out good. Then replace the flex vent pipe going outside and make sure the vent is open. Or keep on buying limits.
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: utee94 on March 18, 2010, 06:34:17 PM
Remove the lint chute, the the big old box the filter lives in, wash it out good. Then replace the flex vent pipe going outside and make sure the vent is open. Or keep on buying limits.

Thanks!  I'm really not interested in buying new limits every 3 months, so I think I'll try it your way...  :)

Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: utee94 on March 19, 2010, 10:36:20 AM
Okay, I've removed the lint chute and it had some crud in it, down at the very bottom.  It probably blocked about 15% of the opening.

So I have three questions, if anyone is around to help answer them:

1) Would a 15% blockage of the exhaust from the lint chute cause the thermal cutout to blow?

2) The 4" vent duct is bent a little bit, slightly crimped, maybe about 15% blockage as well.  Could that be a contributing factor?

3) I've read on other DIY forums that the lint trap screen itself can build up a sort of "film" that can only be removed with soap and water.  So, when you remove the lint, you're still not cleaning it well enough to keep it from becoming too hot.  Is that true?  Does that make sense?  And if so, how often should it be cleaned with soap and water?

Thanks again, so much, for your help.  This is a great forum with fantastic contributors.

-Marcus
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: JWWebster on March 19, 2010, 04:09:36 PM
Yes to all questions and I use a whisk broom to clean my filter. Those replacement filters are 30 bucks and banging them to get the lint off is not practical.
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: utee94 on March 19, 2010, 05:04:43 PM
Great, thanks again for the help JWWebster.  I've thoroughly cleaned the filter, lint chute, replaced the ducting with new, and replaced the thermal cutout.  It's working now and hopefully I won't be back any time soon with questions on the same appliance...  :)

-Marcus
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: utee94 on March 29, 2010, 10:09:32 AM
Well, it seems like the thermal cutout blew again.

The vent to the outside is one of those that has the flap that pushes open when the dryer is producing air pressure against it, and flaps closed in its normal position.  I checked its movement and it moves freely. The dryer worked just fine with this vent for 8 years.

Is there anything else I can check that might be the problem? 

I really don't want to trash this appliance, other than this issue it's in fantastic condition.

Thanks again in advance for your help.

-Marcus
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: JWWebster on March 29, 2010, 01:27:09 PM
Is it the top one shown here the one that keeps blowing?
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: utee94 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
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: Mr. Fix-It on March 29, 2010, 02:35:34 PM
How long is your vent and how many bends does it have?
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: JWWebster 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.
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: utee94 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. 
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: Mr. Fix-It 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?
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: utee94 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
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: jumptrout51 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.
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: JWWebster 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.
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: Mr. Fix-It 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.
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: utee94 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
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: AJ 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 (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx%253Fpn_%253D3977393&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx%253Fpn_%253D3977393)

(http://appliancejunk.com/images/ordernow.gif) (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx%253Fpn_%253D3977393&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx%253Fpn_%253D3977393)
(http://www.appliancepartspros.com/partpic/Z3BqLjBfbXNfNjE4OTcyL0xQVy9zb3RvaHB0cmFwLw%3d%3d.jpg) (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx%253Fpn_%253D3977393&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx%253Fpn_%253D3977393)

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.
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: utee94 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
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: AJ on April 01, 2010, 11:50:58 AM
Your operating thermostat is part # 3387134 (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-dryer-cycling-thermostat-item-number-ap3131939.aspx%253Fpn_%253D3387134&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-dryer-cycling-thermostat-item-number-ap3131939.aspx%253Fpn_%253D3387134).

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(http://www.appliancepartspros.com/partpic/Z3BqLjBfbXNfNDMxNzgzMy9MUFcvc290b2hwdHJhcC8%3d.jpg) (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-dryer-cycling-thermostat-item-number-ap3131939.aspx%253Fpn_%253D3387134&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-dryer-cycling-thermostat-item-number-ap3131939.aspx%253Fpn_%253D3387134)

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.
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: Mr. Fix-It 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.
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: Earl Dryer on April 01, 2010, 09:52:24 PM
You Have cleaned the vent and vent terminal. You said that you checked the damper flap for operation, did you do it from inside or outside. If you did it from inside go outside and see if it has a stopped up varmint screen on it.
The correct thermal fuse kit for your dryer is 279816 (http://www.repairclinic.com/SSPartDetail.aspx?s=t-279816-%3d%3di2651&PartID=2651) (309F) you need to replace the High limit t-stat also included in the kit, IT IS BAD it not opening and causing the element to overheat blowing the TCO. To test borrow your honey's electric skillet, set the temp at 250 place the limit switch on the skillet face down check to see if the stat opened adjust the temperature up a little at a time until it opens, is within it's listed rating?

WHIRLPOOL 279816 (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx%253Fpn_%253D279816&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx%253Fpn_%253D279816) Dryer Thermal Cut - Off Kit, AP3094244 (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx%253Fpn_%253D279816&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx%253Fpn_%253D279816)

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(http://www.appliancepartspros.com/partpic/Z3BqLjBfbXNfNjE4OTcyL0xQVy9zb3RvaHB0cmFwLw%3d%3d.jpg) (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx%253Fpn_%253D279816&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-dryer-thermal-cut-off-kit-item-number-ap3094244.aspx%253Fpn_%253D279816)
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: JWWebster on April 01, 2010, 11:19:55 PM
Earl how do you like yer limit? Medium er well did?
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: Earl Dryer on April 02, 2010, 08:15:18 PM
Medium-Rare
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: utee94 on May 24, 2010, 03:02:20 PM
Hi all, I just wanted to thank you all for your help.  I replaced both the hi-limit t-stat and the TCO this last time, and it has been working perfectly since then.

Thanks again for your help and for putting up with a frustrated newbie.   :)

-Marcus
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: Barry on July 22, 2010, 08:41:01 AM
I too have a 70 series that will not heat.  Found Repair-Man's picture really helpful.  Did the checks and found the thermal fuse open circuit.  Bought the replacement kit at Sears.  Did all the clean outs and am ready to put it back together, but.....

The high limit thermostst comes with instructions to jump one side to the heating element.  My dryer has 2 wires coming from the harness to the thermostst and 2 wires to the element - no jumper.

Do I still need to jump something, or do I just reconnect as it was?

Thanks

Barry

Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: JWWebster on July 22, 2010, 09:17:43 AM
Reconnect it as it was
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: Nathan Allen on July 21, 2013, 01:57:01 PM
So, if the fuse is blown the dryer will not run at all or just will not heat?
Title: Re: 70 series Kenmore electric dryer spins but does not heat
Post by: JWWebster on July 23, 2013, 08:25:04 AM
If the skinny white fuse with one screw is open the dryer will not run. It is connected to the door switch circuit and when the filter housing overheats the fuse opens and it is just as if you opened the door. The dryer stops.