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    Heat fault

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    Duet Hardware and wiring
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    • Phaedruxundefined
      Phaedrux Moderator
      last edited by

      Yes if your PSU is 24v the heater cartridge should be as well. Is it?

      Do you get an error message when you try to turn the heater on?
      Did it work before? Did something recently change?

      Need a lot more information.

      Z-Bot CoreXY Build | Thingiverse Profile

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      • tjb1undefined
        tjb1
        last edited by

        Turn the hotend on and check the voltage at the board to see if it's coming on.

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        • totalitarianundefined
          totalitarian
          last edited by

          No voltage reading at the hot end screws but the red led does come on.

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          • totalitarianundefined
            totalitarian
            last edited by

            @Phaedrux:

            Yes if your PSU is 24v the heater cartridge should be as well. Is it?

            Do you get an error message when you try to turn the heater on?
            Did it work before? Did something recently change?

            Need a lot more information.

            Yes the message is 'Heater Fault'
            It has been working for months until today, nothing has changed.

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            • Mikeundefined
              Mike
              last edited by

              If you own a multimeter check the resistance between the terminals. With the board turned off ofc. The resistance should be from 14 to 20 Ω for the 24V cartridge, or around 4 Ω for the 12V one. That should rule out the faulty heater element.

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              • totalitarianundefined
                totalitarian
                last edited by

                It appears I can't use a multi meter properly as I just get a value of "1"

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                • dc42undefined
                  dc42 administrators
                  last edited by

                  That is the reading you get when what you are measuring is open circuit. So either the heater cartridge has failed or you have a bad connection in the wiring to it.

                  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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                  • totalitarianundefined
                    totalitarian
                    last edited by

                    Thanks. Should I be able to measure 24v at the connection block on the board when I turn the heater on?

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                    • dc42undefined
                      dc42 administrators
                      last edited by

                      Yes. Be careful not to short it out while you are measuring it.

                      The LED and its resistor are connected in parallel with the terminal block; so if the LED is lit then it's most unlikely that you won't find 24V on the terminal block.

                      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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                      • totalitarianundefined
                        totalitarian
                        last edited by

                        I'll order a new heater cartridge just to be safe

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