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Dryer will not shut off even after reaching the off position


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7 replies to this topic

#1 repairontheside

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Posted 07 April 2005 - 05:01 PM

The dryer will reach end of cycle with the chime activated but unit will fail to shut down after finally reaching the off position.

I've physically turned the dial to all the other off positions and still the dryer continues to run.  Heating is running, drum running.  System will stop when the door is open.

I think it will be mostly the motor/timer assembly.  The only other thing that may be defective is the moisture monitor PCB but to me it seems unlikely.

Just need someone to confirm this.

 


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#2 Samurai Appliance Repair Man

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Posted 07 April 2005 - 06:02 PM

Seen this alot with the Maytag dryers. What's your brand and model number?

#3 repairontheside

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Posted 07 April 2005 - 07:33 PM

Maytag Atlantis Series Gas Dryer model # MDG8600AWW

#4 Samurai Appliance Repair Man

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Posted 07 April 2005 - 11:24 PM

So you're saying the dryer motor will continue running even with the timer in the off position?  If yes, then check for timer's #1 contact set fused together:  with timer set to the off position (dryer unplugged!) check for continuity from the gray-wire terminal to the yellow-wire terminal.  Remove one of those wires before measuring so that you don't read back through the circuit.  If you read continuity, the timer #1 contact set is welded shut and you need a new timer.

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#5 repairontheside

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Posted 08 April 2005 - 05:28 AM

Dear Grand Master,

Yes.  That is exactly right.  I will go ahead and perform the test as indicated and let you know.

I was also thinking along the same lines.  Maybe the contacts inside got stuck or "fused" as you stated.  Once this proves positive, I will replace the timer assembly.

Thank you very much for the advice.  Much appreciated.

Best regards,


#6 Samurai Appliance Repair Man

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Posted 08 April 2005 - 08:56 AM

Glad to help, let us know whatcha find! :cool:

#7 repairontheside

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Posted 15 April 2005 - 03:03 PM

As promised, here is the final update.  I replaced the timer and that resolved the problem.

I went ahead and disassembled the original timer assembly to provide failure analysis.  It turns out the the contacts are not fused together.  Rather, it turns out that the spring action of the contact arm that connects the grey and yellow external wires failed.  So the #1 contact lever arm did not return back to it's "home" position.   Failure is due to stress hardening of the copper metal like bending a paper clip many times (causing necking of the metal) at the same point to cause it to snap.  I tested the other lever contact arms and they seem to be fine, they returned to the original position.  Therefore the old timer assembly unit is history.  I will keep the motor section in case the new timer motors fails some time in the future.

 

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#8 Samurai Appliance Repair Man

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Posted 15 April 2005 - 03:18 PM

Great update and picture! Thanks for the followup. :)




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