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    What happens to the board with a seized fan

    Duet Hardware and wiring
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    • paboman
      paboman last edited by

      Can a seized fan, on the always on connector, damage the board somehow ?
      thx

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      • dc42
        dc42 administrators last edited by

        If it's a normal small brushless DC fan, it's unlikely to damage the board. If it's a high power fan or an air or water pump using a brushed DC motor, then it could damage the board by burning out the VIN fan trace on 1.02 and earlier revision boards, or blowing the blade fuse on revision 1.03 boards.

        Duet WiFi hardware designer and firmware engineer
        Please do not ask me for Duet support via PM or email, use the forum
        http://www.escher3d.com, https://miscsolutions.wordpress.com

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        • paboman
          paboman last edited by

          its a small 24v 0.1A 40x40 fan, I know that after many hours they tend to stop turning because they are cheap

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          • dc42
            dc42 administrators last edited by

            Are the other fan outputs still working? What position is the fan voltage selector jumper in?

            Duet WiFi hardware designer and firmware engineer
            Please do not ask me for Duet support via PM or email, use the forum
            http://www.escher3d.com, https://miscsolutions.wordpress.com

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            • paboman
              paboman last edited by

              All the fan outputs are all working good, the boards are new (1.03) I am just asking for future, I must look ahead…I know that one day the fan that is cooling the board will die....
              The fan voltage selector is on the standard (as delivered) position.

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              • dc42
                dc42 administrators last edited by

                If it's an ordinary brushless DC fan, the current draw when it seizes up won't be enough to damage anything, except possibly the fan itself.

                Duet WiFi hardware designer and firmware engineer
                Please do not ask me for Duet support via PM or email, use the forum
                http://www.escher3d.com, https://miscsolutions.wordpress.com

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