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Kenmore 110.86874800 Elec Dryer does not heat or turn off

kenmore no heat timer off

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7 replies to this topic

#1 fm_weasel

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Posted 17 February 2012 - 12:30 PM

I've read a few very similar threads on this forum already but before I start replacing parts, I'd appreciate some help further diagnosing my issue.

The dryer does not heat on any setting, with or without the dryer vent hose connected. It blows air like crazy and doesn't appear to be blocked in any way.

The automatic section of the timer does NOT advance while the dryer is running. The two timed sections DO advance, but will not switch the dryer off. When the timer approaches the off area, it stops and the dryer continues to run indefinitely. If I manually turn the timer past the off switch click, the dryer will shut off and the appropriate buzzer will sound. I hear another click just prior to the off click down in the body of the dryer when turning the knob manually, so it's still triggering something when the physical position of the timer is moved.

I've included pictures of the back of the dryer. I checked the resistor to the right of the timer using a multimeter. It displayed 4.68 kOhms of resistance and didn't appear to be blown out or burned.

From previous threads, it appears this could be the resistor, the timer, or the heating element. Or a combination. I would really appreciate any help in narrowing down the cause.

Thanks folks, here are the images:

http://dl.dropbox.co...30/IMAG0012.jpg

http://dl.dropbox.co...30/IMAG0013.jpg

http://dl.dropbox.co...30/IMAG0014.jpg

http://dl.dropbox.co...30/IMAG0015.jpg

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#2 RegUS_PatOff

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Posted 17 February 2012 - 01:04 PM

... The automatic section of the timer does NOT advance while the dryer is running.

normal operation ... until Dryer reaches temperature
It may be a bad Heating Element or one of the Hi-Limit safety devices.
I don't have a wiring diagram for that model,
unless you have one you can upload somewhere and post the link here.
.

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#3 fm_weasel

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Posted 17 February 2012 - 03:39 PM

There is a schematic on the back of the dryer. Do these images help?

http://dl.dropbox.co...30/IMAG0016.jpg

http://dl.dropbox.co...30/IMAG0017.jpg

http://dl.dropbox.co...30/IMAG0018.jpg

http://dl.dropbox.co...30/IMAG0019.jpg

Duplicated with close ups for readability.

Thanks for your time.

#4 RegUS_PatOff

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Posted 17 February 2012 - 04:16 PM

check & re-set the House Circuit Breakers for the Dryer
check for 120v & 240v at the Dryer Power Cord Terminal Strip
check the Heater Element # 14
Posted Image
.

one of my video productions: “Easter Seals: Walk With Me”

every day is Down Syndrome Awareness Day
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#5 fm_weasel

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Posted 17 February 2012 - 05:00 PM

The house breaker for the dryer wasn't tripped, but I flipped and reset it anyway.

The terminal block read 125.7 on the 120V line and 251.8 on the 240V line.

I checked both the terminal ends, as well as the coil itself on the bottom of the heating element for continuity. There was none. I guess this means the element is bad and the solution from here is pretty straight forward?

#6 RegUS_PatOff

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Posted 17 February 2012 - 05:29 PM

... heating element for continuity. There was none.
... I guess this means the element is bad and the solution from here is pretty straight forward?

1) Heating Element should be about 10 OHMs ... won't "beep" on some continuity testers
2) yes
http://www.repaircli...sp?R=154&N=3367

 

Heating-Element-Assembly-4391960-0055563


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one of my video productions: “Easter Seals: Walk With Me”

every day is Down Syndrome Awareness Day
"A Child Is Waiting" . Burt Lancaster . Judy Garland . 1962

RegUS_PatOff > www.youtube.com/watch?v=oPAY2LsKVEw

#7 fm_weasel

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Posted 17 February 2012 - 05:40 PM

Well I extracted the element without testing impedance, but the problem is obvious. There's a break in the element.

Are the timer issues likely to clear up with replacement of just the heating element?

Glad I know what to do now, and can service this myself. Thanks everyone for the help.

#8 jumptrout

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Posted 17 February 2012 - 05:45 PM

Yes. Once the heating element is replaced the timer may return to normal advance.





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