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    Duet 2 Maestro with Ender 3 Pro - bed fault

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    Duet Hardware and wiring
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    • getastroundefined
      getastro
      last edited by

      Hello all, I have a question, I just finished wiring up my Maestro to my Ender 3 Pro. Everything want great, but when I go to heat the bed I get this "Error: Heater 0 fault: temperature rising much more slowly than the expected 1.7°C/sec". Now I have run this autotune for the bed and it gives me this "M307 h0
      Heater 0 model: heating rate 0.318, cooling time constant 571.4, dead time 3.40, max PWM 1.00, calibration voltage 24.1, mode PID
      Computed PID parameters: setpoint change: P165.0, I3.741, D393.0, load change: P165.0, I11.813, D393.0". Which I added to my M307 H0 line in the config.g file.

      I am not sure why I get the fault when trying to test the bed. Anyone out there have any ideas? I am planing on replacing the bed my a new heater and a Mic6 plate soon but in the mean time I would like to get it working.

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      • Vetiundefined
        Veti
        last edited by

        its normal to get that message in rrf3, because the default tuning parameters are not meant for a bed.
        with your tuned parameter this should not happen.

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        • getastroundefined
          getastro
          last edited by

          Well I re-ran the autotune again and updated the PID numbers. So far its working.

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