Fans control

  • Hi,

    I am running a Railcore II ZL with a BMG extruder and Mosquito hotend on a Duet 2 Wifi. The board is running firmware 2.05.1

    I recently switched my hotend fan from the "always-on" connector to FAN1. At the same time, I changed it to activate thermostatically ( M106 P1 S255 H1 T50 C"Hotend" in my config.g ).

    My problem is that when the fan comes on, it doesn't run at full rpms. I can manually move the Fans control and hear it ramp up. This led, I believe, to a failed print as I think the filament was partially melting before the hotend which gradually constricted the flow and ultimately cut off the filament altogether.

    Is there something I should be doing so that the fan comes on a full "power"?

    Thanks for any assistance,


  • Moderator

    Instead of S255 please try S1.

    Post your full config.g as well if that doesn't work.

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