Fan Not Spinning?

There are a couple of things than can relate to a fan not spinning:

1) The fan is being instructed to spin at a speed other than 100%.  Use the fan at 100% for the most consistent results.  Sometimes a fan has trouble getting started if it's instructed to start moving but is not given full power.

2) Over tightened screws holding the fan to the Y arm assembly. Sometimes it is possible to push the blades of the fan and it will start to spin. Other times it will be very tight to move by hand. Loosen the M3 screws so the fan turns easily by hand

3) Fan wired incorrectly. In this case the fan may not spin or may spin backwards. Make sure that the fan is wired correctly  keeping the colors matched where possible red to red, black to black. If using extension cables make sure that no cables have been crossed and it is plugged into the Printrboard correctly.

 

 

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12 Comments

  • 3
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    Matt Perreault

    When I power on my Printrbot Play (Rev F5) should the top fan turn on immediately?  I have a second one that is older Printrbot Play (Rev F5) without the thumb screws and it's fan turns on immediately upon powering on. 

    When I power on my older Play. I measure 12 volts going to the top fan. I only measure 0.6 Volts going to the top fan upon powering on my second Printrbot. I tried switching around the fans to see if I could power the bottom fan with the power cables for the top fan. This didn't work either. 

     

  • 0
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    Sarah Livingston

    I have the same question - shouldn't the fan be on ?

     

  • 0
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    Tim Hayes

    I just found this thread while looking for an answer to the same question. I just replaced a bad Printrbot Play board with a newer version and had to replace the fans to match the new hardware. My Play used to spin up immediately and now it doesn't... and I don't know if this behavior is intentional or if I didn't put the hardware back together correctly.

    Did either of you resolve this?  I'd really appreciate some feedback.

    Thanks, Tim

  • 1
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    Sarah Livingston

    Not really, but I read somewhere that they do not go on automatically, they turn on during the print. If you want to turn them on prior - use M106 to turn on the fans in the Control panel. M107 to turn the fans off.  I believe that is the only on/off option that you get. We just got our Play in May/June so we have a newer version of Play so probably newer parts operate the same way?

  • 0
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    Stephen Middleton

    I have a printrbot play, And recently upgraded the printrboard to a RevF6. I also have a heated bed and "Y" axis upgrade added to the machine. Everything is working fine except for my bottom (Print cooling) fan. It use to come on at a height specified in cura settings, But now it doesn't come on at all. I have switched around the connectors on the board (With machine off) and the bottom fan with act as the ubis cooler fan at 50f it come on. So it's not the fan... I have read a few places that the M106/107 commands don't work in the newer RevF6 boards, And can confirm this as I have sent the commands with nothing happening. Is the connector on the board bad or is something needing changed in firmware? I'm lost as I have tried everything I know. I have contacted Printrbot last week with no response. The board is 2 months old. A for a month and half it sat in the box it came n due to I had to order a new PSU to run the upgraded heat bed. I am really bummed as that fan is certainly needed in a lot of prints. Thanks for any help or advice.

  • 0
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    Adam Day

    I'm in the same situation. I just flashed firmware to both an F5 and F6 board and the fan doesn't kick on at all. M106/M107 commands don't do anything it seems. 

    Any insight would be appreciated! 

  • 0
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    Shiehida

    I had similar situations. My PrintrBoard (Simple Metal) ver. F4. After reflash Simple 06.hex then Fan seems dead and even used M106/M107 still no work. But I try refresh to Simple 03.hex. Guess what? It's working again.

  • 0
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    Dave - PB Support Team

    Hello all, sorry for the confusion with firmware/fans.  Play users, please see Fan Functionality on the Printrbot Play for more information.

    ...there is relevance for Simple and Plus users as well, but this article refers specifically to the Play since it is the only bot that ships with two fans.

    Edited by Dave - PB Support Team
  • 0
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    Stephen Middleton

    Adam, are you using a play? If so what version hex you trying to flash? I'm on mobile at the moment but when I power up my PC I'll give ya the newest file from PB. It restored my fan fictions. I think the previous hex file was messed up.

  • 0
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    David A Trimm

    I just got a play... my top fan was not coming on as it should... being the tech I am, manually set temp to 70c and noticed that at 50c, when the top fan should've come on, the bottom fan engaged... oops, someone mixed the to fan wires... swapped them on the board, and everything works as it should...

     

    no one to blame, we are all human... but be on the lookout for this issue... it could unnecessarily cook an extruder...

  • 0
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    Dave - PB Support Team

    Thanks for the heads up David!  

  • 1
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    David A Trimm

    a further note: I was wrong... I did what so many others try and that is install the latest firmware after initial setup of a new unit... tried to goto the github and get the latest (play-0.6.hex for me) file, only to get an error... then I went back to the download page and got the play-0.2.hex at the bottom...

     

    Play-0.2 switched the fans in the firmware because the older boards do not have multiple plugs on the board for each fan... the fans are wired together... which is why, under that firmware, I could not get the part fan to come on at all, not matter what I tried... so I went searching the greater internet and found where a lot of people were trying to get the latest firmware but only a small few were having success... and one guy, mentioned that the issue was the way the file was saved, but didn't give his steps... so that got me thinking...

    I went back to gethub, and started to try every possible way to save the latest file... here's what I did...

     

    1. goto github, see the list of files

    2. left click on file name that I wanted, see contents of file in a webpage panel

    3. left click the "RAW" button at top right of panel, see contents of file without any webpage interfereance

    4. right click on blank page area and "Save As" in context menu

    5. saved to a folder as a text file (play-0.6.hex.txt for me)

    6. opened windows explorer, went to folder where I saved file

    7. on explorer menu, view, then turn on file extensions (usually at the right half of menu bar)

    8. right click on file in folder and choose "rename" from context menu

    9. delete ".txt" from end of file and press enter, will get warning saying the file type will change, ok that, now file is right (play-0.6.hex for me)

    10. follow steps as instructed to flash new firmware... no errors...

     

    basically, in a nut shell, here's what happened... originally, when I clicked on filename, I expected download... but it showed contents of file in panel in stead... so I went back to pervious screen and right clicked on file name and "saved as"... but that not only saved the file, but all the panel and page information that I seen there... so the file was over 1MB of data, and not the <300kb that it should've been...

    once I did that, all was working properly... the right firmware, the fans work as expected, I can turn parts fan on/off with M106/M107 commands... life couldn't be better... I really hope this helps you guys...

     

    most people are not techs, so I would suggest that tech support move the file to make this process easier on the no-so techy people...

    Edited by David A Trimm
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