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Whirlpool duet dryer

whirlpool dryer heating element

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9 replies to this topic

#1 mpm8789

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Posted 26 November 2012 - 08:37 PM

I have a duet dryer model wed9400sw0 that is getting 120 volts to the heating element at all times when running even in air fluff. It had an f25 error in the service mode. I checked the outlet themisitor and it was at like 35 k ohms but it was still warm so that seems ok. I am leaning towards replacing the machine control electronics and outlet themisistor just to be safe. Just looking for a second opinion.

Thanks Michael

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#2 RegUS_PatOff

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Posted 26 November 2012 - 09:11 PM

... getting 120 volts to the heating element at all times when running even in air fluff.

can't normally measure a 240v Heater Element using Neutral (ground),
but are you getting 120v to Neutral (ground) at both (each) end of the Heater Element in the Air Fluff Mode ?

Tech Sheet - W10110638.pdf
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#3 mpm8789

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Posted 26 November 2012 - 11:34 PM

measuring across both leads I was getting 120 volts on air fluff. I didn't check from each lead to ground.

#4 Samurai Appliance Repair Man

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Posted 27 November 2012 - 07:17 AM

measuring across both leads I was getting 120 volts on air fluff. I didn't check from each lead to ground.


Disconnect one of the leads from the element before you make this measurement or you'll just read the voltage through the element from the other side. Also, this splits the circuit in half with the 120vac from the controls on one side and the other 120vac from the motor on the other side and lets you identify which is the problem side.

#5 RegUS_PatOff

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Posted 27 November 2012 - 08:12 AM

... measuring across both leads I was getting 120 volts on air fluff.

doesn't make sense ..
If there was 120v across the Heating Element, it would be "heating" (somewhat)
Has this Dryer worked OK up till now at this location ?
.

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#6 telefunkenu47

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Posted 28 November 2012 - 08:27 AM

Seems to me its either a stuck relay on the main board or a closed centrifugal switch on the motor. Ive never seen a motor fail like tghat, so my money is on the heater relay. Try pulling the wire off the relay if possible and see if that changes anything. Also just for S&G ohm the heater to ground and make sure its not shorted out. Thats probably not it, but lets rule it out just for Occams sake. good luck.
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#7 kdog

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Posted 28 November 2012 - 08:06 PM

Who is Occam ?


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#8 RegUS_PatOff

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Posted 28 November 2012 - 08:10 PM

from http://en.wikipedia....i/Occam's_razor

"Occam's razor (also written as Ockham's razor, Latin lex parsimoniae) is the law of parsimony, economy, or succinctness.

It is a principle stating that among competing hypotheses, the one that makes the fewest assumptions should be selected.

The principle is often incorrectly summarized as "other things being equal, a simpler explanation is better than a more complex one."

:whistling:


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#9 Scottthewolf

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Posted 28 November 2012 - 10:23 PM

I had a few Whirlpool electric dryers where the thermal fuse on the blower housing cut the power to everything but the heater element.  The heater element was  on the whole time the timer was on. Just to be safe to make sure the heater element wasn't grounded out I replaced the element and the thermal fuse.


Scott Wolf

#10 mpm8789

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Posted 05 December 2012 - 07:55 AM

Update.  I installed a new machine control electronics and it fixed the problem thanks for the help.

 

Machine control electronics board ==> http://www.repaircli...mber=WED9400SW0

 

Main-Control-Board-W10110641-00714220.jp


Edited by Samurai Appliance Repair Man, 05 December 2012 - 09:17 AM.
Added link to the part that fixed the problem.






Also tagged with one or more of these keywords: whirlpool, dryer, heating, element

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