Jump to content
Ultimaker Community of 3D Printing Experts

Extruder Fan Always ON


Recommended Posts

Posted · Extruder Fan Always ON

Hi advanced members.

I am a newbie, I have my ultimaker now for couple of weeks. One day i noticed the extruder fan is always turned on, usualy i can control the fan from ulticontroller (Temperature > FAN) but now i can't.

I still can print without any problem, but i checked the voltage. it's 19 Volts (for 12 v fan)

Sould i worry about this? is there any trouble with the board?



  • Link to post
    Share on other sites

    Posted · Extruder Fan Always ON

    Most likely it's a problem with the darlington transistor on the board. It's near the fan connector and when it breaks the fan is always on or always off.


  • 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

      • New here? Get ahead with a free onboarding course
        Often getting started is the most difficult part of any process. A good start sets you up for success and saves you time and energy that could be spent elsewhere. That is why we have a onboarding course ready for
        Ultimaker S5 Pro Bundle, Ultimaker S5, Ultimaker S3 Ultimaker 2+ Connect.   
        They're ready for you on the Ultimaker Academy platform. All you need to do to gain access is to register your product to gain free access. 
        Ready? Register your product here in just 60 seconds.
          • Like
        • 13 replies
    • Create New...