Question about Dryers

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Three days ago, my dryer stopped in the middle of a load with 40 minutes left. Restarted okay. Next day it did the same thing. Now, it has no heat. I'm curious if a problem with the timer could fail to activate the heater, or if the heaters are likely blown. Exhaust vent is clear with no obstruction.

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  • rgreco Feb 02, 2010

    Thanks Are.

    The voltage is okay.

    Would either of the thermal fuses cause the timer to stop mid-cycle? That was the first symptom.

    Can you clarify for me?

    You refer to 2 thermal fuses, but you only mentioned how to access one of them - are they both accessable through the back panel, or do I have to remove any other panels to access the one on the right side of the heater assembly?

    Where exactly is the heater assembly? Are there any assembly drawings on line?

    Ducting is clean from the rear elbow exiting the dryer, and there is strong air flow coming out of machine. That was the first thing I checked.

  • rgreco Feb 02, 2010

    I don't know if you got my follow up question, but I never got a second response.

    Do I access both fuses by removing the rear panel, or do I need to remove any other access area (top of dryer etc)?

    How would either of these fused being blown explain the timer stopping at 40 minutes, but restarting as soon as I pressed the start button?

  • rgreco Feb 03, 2010

    My dryer stopped mid cycle twice in the last few days. Then, it failed to create heat. Based on info I got here (along with the wiring diagram in the dryer), I traced the problem to a thermal cutoff switch.

    So the question becomes what caused the switch to trigger. Given that the dryer stopped mid cycle two days in a row, it would seem that a problem was developing - possibly triggering the hi-limit thermostat,no? (which is resettable)

    Given that there was very little lint in the duct or around the heaters, should I assume that there the cause is a bad operating thermostat? Perhaps it is stuck in the "on" position?

    Is there a way to test that?



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It is possible for a timer to cause a no heat issue on a dryer but if fairly uncommon. However the fact that your dryer shut down in the middle of a cycle indicates possible bad contacts on the timer. You could also possibly have a bad motor or motor harness, if the motor was bad it would overheat at shut down on its thermal overload. Once the motor cools back down again you would be able to start the dryer back up. If the venting is clear and has been clear (all the way outside) then its probably not a fuse issue (however a blown thermal fuse is a common problem of no heat on many makes of dryers).
If you post back with the model number it would be easier to give you more specific instructions as to component testing. Basically the only way to know for sure if the timer is bad is by testing all other heat components in the system. Or checking for voltage directly at the element.
The other thing I would check is the door switch to make sure that its not "touchy" by simply pushing and pulling on the door of the dryer lightly and listen for the door switch click. This would cause the dryer to shut down early in the cycle but would not have an effect on heating because if the door is not closed to dryer will not run.
Hope this helps _MJ_

Posted on Feb 03, 2010

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Check the power to the dryer (between L1 and L2 should read around 240 V AC, L1 to the White (neutral) should read 120 V AC, L2 to the White should read 120 V AC)
check the thermal fuse on the right side of the heater assembly (use a continuity meter, should be buzzing or on the Ohm meter "0" Ohm)
if not replace it.
if the thermal fuse was broken, clean and check inside your dryer they went passages and your went pipe is the next thing to blow out.

Check the thermal fuse at the rear of the dryer.Take the back off and look for a little white piece by the vent has 2 wires going to it and is held in with a 1/4 inch hex head screw. Take off the two wires and join them together with black electrical tape and try the dryer. If everything starts wiring replace the fuse and clean all your external ducting.
If you are not familiar with either AC current or a volt meter call a tech.

Thanks for contacting

Posted on Feb 02, 2010


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