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    Heater problems Duet2 Wifi

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    Duet Hardware and wiring
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    • TokeDKundefined
      TokeDK
      last edited by TokeDK

      I caused a heater cartridge short (I believe), I accidentally worn the wire insulation to the hot end down by overtightning the assembly.

      I replaced a blown 7.5a fuse, insulated the wires with electrical tape as an attempt to revive it.

      Now I'm having thermister faults...

      I changed the thermister as I thought that was the issue, but I'm getting VSSA faults on both the bed and hotend, after the bed has warmed up and while the hotend is warming up?

      I read that a heater cartridge short can cause VSSA fault, so should I assume that I need to replace the heater cartridge?

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      • Phaedruxundefined
        Phaedrux Moderator
        last edited by

        I could have damaged the VSSA fuse on the board. Can you try the other heater terminals? E1 instead of E0?

        Z-Bot CoreXY Build | Thingiverse Profile

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        • TokeDKundefined
          TokeDK @Phaedrux
          last edited by TokeDK

          @Phaedrux Do you mean switching the "terminals" so E1 --> E0?

          E0 (heated bed) works fine as far as I can tell although I had to do a PID autotune after the suspected short, and the bed is heating slower than I remember.

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          • Phaedruxundefined
            Phaedrux Moderator
            last edited by

            The bed should be on the bed heater terminals? Is it a DC heated bed?

            Z-Bot CoreXY Build | Thingiverse Profile

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            • TokeDKundefined
              TokeDK @Phaedrux
              last edited by

              @Phaedrux Uhm, do you mean phsyical screw terminal? In that case it is, and yes it is DC.

              Apologies for dumb questions... Still learning 😄

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              • Phaedruxundefined
                Phaedrux Moderator
                last edited by

                https://duet3d.dozuki.com/Wiki/Choosing_a_bed_heater

                https://duet3d.dozuki.com/Wiki/Hardware_Overview

                Usually the bed would be connected to the bed heater terminals since the bed is usually high current draw unless you are using a mosfet or ssr to switch a different power source.

                Z-Bot CoreXY Build | Thingiverse Profile

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                • TokeDKundefined
                  TokeDK
                  last edited by

                  I did turn out to be a hot end short causing the weird errors. Closed.

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