Jump to content
Ultimaker Community of 3D Printing Experts

Fan is not running like it should.


SassyDalmatian
 Share

Recommended Posts

Posted · Fan is not running like it should.

So, recently I acquired a new fan, as my old one was busted. This was same maker, same everything. When I plugged it in, however, my fan started to make this high pitched noise, and wouldn't start via the control board. However, when I spin it's blades on my own, it keeps on running. Thinking this was only the fan model, I plugged in another 24v fan. Excluding the high pitched hum, the exact same problem was there. What can I do to fix this?

  • Link to post
    Share on other sites

    Posted (edited) · Fan is not running like it should.

    If the new fan has the same specs as the original, maybe the board pwm fan was busted by that short circuit you got (old post I remember you wrote).

    So. Easiest way to test if it's the board it's to connect the fan to the led pwm (both parts have the same circuit). Then you need to send the gcode M42 S128 to set the led pwm to 128 of 255. If the fan it's ok it should work. If the problem remains it's the fan.

    So if you do that and it works on the led pwm then your pwm fan it's dead (probably a resistor or most probably the transistor since you got a short circuit before).

    If so, I did a post long ago that explains (more or less) how to change it (but you need the propper tools and steady hand).

    So try that first and if works on the led pwm you might need a firmware modded to change the pwm fan to pwm led, this way you would have a working by gcode fan.

    Please triple check before pluging the fan to the led that the +/- it's perfectly in order, doing it wrong might break the led pwm also (if that's the problem).

    Edited by Guest
  • Link to post
    Share on other sites

    Posted (edited) · Fan is not running like it should.

    Yes. Make a txt file with the gcode commands. Remember to insert a return after each line or they won't work. Or get a gcode, edit, clean, and paste your gcode lines.

    Edited by Guest
  • Link to post
    Share on other sites

    Posted · Fan is not running like it should.

    Okay, so the fan worked as it should. Where should I go to get the custom firmware?

  • Link to post
    Share on other sites

    Posted (edited) · Fan is not running like it should.

    So fan works when using led pwm. Ok. Then you need to make your owm marlin.

    http://www.extrudable.me/2013/05/03/building-marlin-from-scratch/

    I use @amedee branch

    https://github.com/AmedeeBulle/Marlin

    On pins.h under the ultimaker 2.1 board you need to swap the pins of fan pwm with led pwm

    Edited by Guest
    • Like 1
    Link to post
    Share on other sites

    Posted · Fan is not running like it should.

    Btw I bet that the transistor died on pwn fan. If you have a friend or your know how to change smd chips it's quite easy and the transistor chip it's just 0.10€ or so.

    Here's how I changed mine

    https://ultimaker.com/en/community/17214-fan-pwm-output-0v-umo-board-solved-not-solved#reply-118977

  • Link to post
    Share on other sites

    Posted · Fan is not running like it should.

    I did same with Ultimaker Original. There is BD679 to be resoldered.

  • 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
     Share

    • Our picks

      • New here? Get ahead with a free onboarding course
        Hi,
         
        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
        • 11 replies
    ×
    ×
    • Create New...