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    Spurious heater fault during heating chamber

    Tuning and tweaking
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    • Jap
      Jap last edited by

      Hi,

      I have faced heater faults when I turn chamber heater on and leave E0&E1 to 0C for eg. to dry filaments etc.
      During the chamber heating E0 & E1 rises also, even not heated by their own heaters and at some point they will report error. I have M570 set to 15C.

      By looking the pinned spurious heater fault topic there is a mention that heater monitoring is activated >45C.

      Basic options would be:

      1. Also put heater on for E0&E1 to same as chamber temp
      2. Widen M570 excursion limit so temps in E0&E1 does not exceed the limit.

      Is that 45C / temp monitoring limit hard coded? can it be changed?
      Do you have ideas how to avoid this without need to but heaters on or modify M570 limits?

      -jap

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      • dc42
        dc42 administrators last edited by

        Why not set the extruders temperatures equal to the target chamber temperature, or a little higher?

        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

        Jap 1 Reply Last reply Reply Quote 0
        • Jap
          Jap @dc42 last edited by

          @dc42 Yes that is what I´ve been doing so far. Just asking if there is a possibility to set that monitoring temp to eg. 100C or something else that I could avoid this completely. I know that´s not a big deal to set those manually, but..

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          • dc42
            dc42 administrators last edited by

            The temperature at which monitoring starts is hard coded, so you would need to build the firmware yourself to change 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

            Jap 1 Reply Last reply Reply Quote 0
            • Jap
              Jap @dc42 last edited by

              @dc42 Thanks for quick and prompt reply. I´ll move on with the old style 🙂

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