Jump to content

Hot end Fan doesn't work..


erege

Recommended Posts

Posted · Hot end Fan doesn't work..

Hi All!

I've been playing around with my new ultimaker, and after some prints, I'v noticed that the hot end cooling fan never turns on.

I've checked the box in advanced settings of Cura for activating the Fan, and checked also the connections with the board, and they seem to be ok.

Someone can get me a clue of what is happening?

Thanks in advance!!

  • Link to post
    Share on other sites

    Posted · Hot end Fan doesn't work..

    Check your minimum fan speed. If it's not high enough, the fan won't engage... Something in the order of 100 or so would be my guess for what you should have. This value will change slightly depending on the the layer time, so if it thinks it doesn't need a lot of cooling, and your minimum fan speed isn't high enough, it won't supply enough juice to the fan. Other than that, check your fan's wires all the way through to the connection at the top of the printhead. Sometimes those inside the box can slide over to the hotend and strip/melt off the casing, causing the current to simply bypass the fan. Other than that, you likely have either a bad fan, bad connection (fan to cable, cable to board), or a bad output in the board.

  • Link to post
    Share on other sites

    Posted · Hot end Fan doesn't work..
    Check your minimum fan speed. If it's not high enough, the fan won't engage... Something in the order of 100 or so would be my guess for what you should have. This value will change slightly depending on the the layer time, so if it thinks it doesn't need a lot of cooling, and your minimum fan speed isn't high enough, it won't supply enough juice to the fan. Other than that, check your fan's wires all the way through to the connection at the top of the printhead. Sometimes those inside the box can slide over to the hotend and strip/melt off the casing, causing the current to simply bypass the fan. Other than that, you likely have either a bad fan, bad connection (fan to cable, cable to board), or a bad output in the board.

    you need about 25 (out of 255) (or 10 out of 100%) for the fan to start spinning, but even then you have a tiny almost useless airflow. 20-25% is the lowest and still meaningful airflow I use.

  • Link to post
    Share on other sites

    Posted · Hot end Fan doesn't work..

    After assembling i had the same problem. I ask the support of ultimaker and we get a solution.

    First i got a new fan but it doesn't work.

    Second i got a new PCB and a new cabeling and it works.

    Now everything works fine and i am very happy. The support was very good and they helped not only for my core problem, but sometimes you have to remember them. (shipping the replacement was not in time :-) )

  • Link to post
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now
    • Our picks

      • Introducing the UltiMaker Factor 4
        We are happy to announce the next evolution in the UltiMaker 3D printer lineup: the UltiMaker Factor 4 industrial-grade 3D printer, designed to take manufacturing to new levels of efficiency and reliability. Factor 4 is an end-to-end 3D printing solution for light industrial applications
          • Thanks
          • Like
        • 3 replies
      • UltiMaker Cura 5.7 stable released
        Cura 5.7 is here and it brings a handy new workflow improvement when using Thingiverse and Cura together, as well as additional capabilities for Method series printers, and a powerful way of sharing print settings using new printer-agnostic project files! Read on to find out about all of these improvements and more. 
         
          • Like
        • 26 replies
    ×
    ×
    • Create New...