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Dryer # LHE7800Do Not running

Was running fine and just stop before finishing the cycle. Thermostat was burnt and I replaced that but still will not run.

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  • compuwayne Nov 21, 2008

    I suppose when the thermostat burnt and shorted it blew the door switch also.

    Chacked all voltages and they were good.

    Bypassed the door switch and she's running once again.

    Thanx for you input.

  • compuwayne Nov 21, 2008

    Replaced the door switch

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  • 24 Answers

Have any way to check voltage?

Gary

Posted on Nov 21, 2008

  • Gary C Smith
    Gary C Smith Nov 21, 2008

    Good you got it going.

    Gary C


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1 Answer

Timer won't stop after cycle finished.


Dryer will not shut off:

The timer: Located in the control console of the dryer the timer consists of a small motor connected to a series of gears that rotate cams, which turn electric contacts off and on inside the timer. The timer contacts control the dryer motor as well as the heat circuit and the timer motor itself. A defective timer motor or a defect in the timer's electrical contacts can cause the timer motor to fail and the timer will need to be replaced. The contacts can be checked for continuity with a multi-meter. This test should only be made when the dryer is unplugged. Another test u can do is observe by eyesight and see does the timer advance or is it stuck on one cycle?


1. On gas and electric dryers that have an "Auto Dry" cycle, the cycling thermostat is often used to advance the timer as well regulate the drum temperature. Essentially, thermostat will alternately turn on the heat source or the timer motor when the temperature has been satisfied. To check this thermostat, you will have to check for power to the timer motor with a multi-meter, during a cycle. This is a live voltage test and caution should be used.

2. Some dryers will use a cool down thermostat to tumble the clothes without heat, at the end of the dry cycle. Power is routed through this thermostat to the drive motor to keep it running until the drum temperature has dropped to a specific temperature. If this thermostat fails it can cause the drum to turn indefinitely or until the door is opened. You can check the thermostat for continuity with a multi-meter. This test should only be made with the power removed from the dryer.

Lastly check the moister sensor for OHMS according to ur schematic as it must show a certain amount of ohms as per ur unit. When unit has been on short while







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Usually when an electric dryer overheats it's because of a defective cycling thermostat or a clogged vent system. Clean any lint from the internal and external ductwork, and/or replace the cycling thermostat

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I have a Kenmore Series 70 Dryer and I changed the thermal fuse got hot for a few minutes the model #110.74722400


The cycling thermostat must also be replaced when replacing the thermal fuse. The cycling thermostat's failure to cycle off the heating element results in overheating of the dryer which consequently blows the thermal fuse open.

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Replacing only the thermal fuse should the dryer stops running and fails to start will result in its premature blowing or even the thermal cut-out (cut-off) located on the heater duct. Like the cycling thermostat, the high-limit thermostat must also be replaced once the thermal cut-out blows open. Refer to the parts diagram in the link below and look for item numbers 31(thermal cut-off), 34(hi-limit thermostat), 39(thermal fuse), and 41(cycling thermostat.

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1 Answer

Our dryer is overheating, after 20 25 minutes then we smell a burnt plasticy smell, then we let it cool down, start again, it goes for awhile, then stops, then again overheating, then the smell again.


Firstly, you need to stop running your dryer before you do any further damage,

As you haven't specified your brand or model of dryer, I can only give general advice. It's likely that your thermostat has failed in the closed (on) position. The thermostat cuts power to the element when your dryer reaches the correct temperataure.

Most dryers also have a thermal fuse to cut all power to the dryer if they overheat. This functions as a backup safety device and this only usually trips when the thermostat fails. Your dryer is stopping because the thermal fuse is cutting power, but as you can smell burnt plastic, it's likely some damage is being done before the thermal fuse trips.

Stop using the dryer, and check/replace your thermostat.


Please rate this solution if you find it helpful. Thanks!

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