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My dryer is drying one load fine. Then when we want to dry another load shortly after, it will start for a second or two then shut off. The duct from the heating element to the back of the tub is so hot you can't touch. I've replaced the thermostat and the same problem. I've replaced the main computer board and the same problem. Fault code F 40 comes up on the screen, but I can't fined it in the manual.

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F40 is a error that appears between the machine control and the motor control when communication becomes lost. Check the connection between the two. The error codes whould be on the tech sheet beneath your console panel along with how to check for this error. Contact service they should be able to give you more information

Posted on Dec 12, 2008

  • futureloginn
    futureloginn Dec 12, 2008

    Now you replace the machine control. A 'communication error' means the machine control is not getting a signal to the motor control. I assume you ohm'ed out the motor as well.


  • futureloginn
    futureloginn Dec 12, 2008

    The tech sheet explains how to check the motor. As far as being sheepish about changing the wrong board, don't sweat it. Even seasoned technicians do this all the time in the field if they don't verify where the exact problem lies. Too many times the tech sheet is just a general guide and will not cover every eventuality. Some things are left up to speculation unless you start OHMing everything involved to spec.

    It also is not the first time more than one part fails, especially when they are interconnected.



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