Hotend and hotbed always on



  • Hi all,
    I just wired my duetwifi and I have a problem.
    As soon as I give power to my board both hotend and hotbed get power and start to heat. Is there something I've to check?



  • Check to ensure neither circuit has a short to VIN negative and polarity for VIN, but would have thought a polarity error on VIN would have given other symptoms.

    Edit; recheck all wiring and if you can't find anything wrong try the board with no heaters connected.



  • Thanks, I'll give it a try👍


  • administrators

    Also check that the back of the Duet is not shorting against anything underneath it, and that the green 3.3V LED is illuminated.


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