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    "Tuning with fan off", But fans are on?

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    • Luxaeternae
      Luxaeternae last edited by

      Hello fellow tiny hot glue gun masters, I'm in need of assistance.

      When I run the auto tune on my bed, It never makes it past the step "Auto tune starting phase 4, tuning with fan off"

      I have waited over 1.5 hours. Strangely the fans are on so maybe the tuner has a "Fan off" command is not making it to the part cooling fans? they are controllable in the Dashboard so I know they work. They are pugged in connector marked FAN0 on the board. I burnt out FAN1 & FAN2 thanks to barrel connectors being easily shorted (never again). The hot end fan is connected to the always on port. the VIN pin is getting a 12v source in. M303 worked with the Hotend and I saved with M500. I attempted to manually input the information in to the .config by adding the line "M307 H0 A2.429, C140.0, D5.5, S.5 " in the Heaters section after reading it in the "M307 H0". output.

      extra info:
      Board: Duet 2 WiFi (2WiFi)
      Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.4.0beta2 (2021-08-03)
      Duet WiFi Server Version: 1.24
      Duet Web Control 3.3.0

      M307 H0
      Heater 0 model: heating rate 2.429, cooling time constant 140.0, dead time 5.50, max PWM 1.00, calibration voltage 0.0, mode PID
      Computed PID parameters: setpoint change: P13.4, I0.482, D51.4, load change: P13.4, I0.949, D51.4

      I'm sure its something obvious I'm doing wrong. would love some advice of idea.

      Thanks
      -Lux

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      • Luxaeternae
        Luxaeternae last edited by

        This post is deleted!
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        • Luxaeternae
          Luxaeternae last edited by

          UPDATE:01
          when attempting a print I get the following error. "Error: Heater 0 fault: temperature rising much more slowly than the expected 1.3°C/sec
          Error: Can't activate heater 0 while in fault state
          T0:40.1 /245.0 B:43.5 /0.0

          UPDATE:02
          after 2.5 hours of tuning I got the following error "Warning: heater behaviour was not consistent during tuning
          Warning: Auto tune of heater 0 failed due to bad curve fit (R=0.173, 1/C=-0.0372:-0.0372, D=9.9)"

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          • Phaedrux
            Phaedrux Moderator last edited by

            Can you please post the results of sending M122 and M98 P"config.g"?
            Also please post your full config.g and a description of the details of your bed heater.

            What M303 command did you use to tune the bed?

            Z-Bot CoreXY Build | Thingiverse Profile

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