SOLVED Rumba does not power the hotend fan

Discussion in 'Build Help' started by Fabricarum, Jul 26, 2016.

  1. Fabricarum

    Fabricarum Member

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    During the printer commissioning I realized, that the Rumba does not power the hotend fan (have a BB Hybrid with only one printhead).
    Rising the temperature higher then 40°C turns on the LED "Fan1" on the Rumba, but the fan does not run. When I put 12V to the hotend fan cable, then the fan works. So the cabeling is fine; what else could be the reason for such a problem? My Voltmeter tells me as well, that there will no power at the screw terminals "Fan1"...
     
  2. Rob Heinzonly

    Rob Heinzonly Well-Known Member

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    Did you test the pins behind the screw terminals ? They have the same output as the terminals.
     
  3. TimV

    TimV Well-Known Member

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    From the wiki page :
    Just helping out, unsure if you checked this.
     
  4. Fabricarum

    Fabricarum Member

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    ... there is no power at the pins - that's the place where I plug the single fan. Of course with the correct polarity.
     
  5. TimV

    TimV Well-Known Member

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    I think it's best to contact support
     
  6. Greg Holloway

    Greg Holloway Administrator
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    Can you post a photo of your wiring please.
     
  7. Fabricarum

    Fabricarum Member

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  8. Greg Holloway

    Greg Holloway Administrator
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    Wiring looks good.

    I'm guessing you have metered the output?
     
  9. Fabricarum

    Fabricarum Member

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    Yes, as I already mentioned: The LED for Fan1 turns on, but no voltage at the terminal screws or the pins...
     
  10. Stian Indal Haugseth

    Stian Indal Haugseth Well-Known Member

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    Call or mail support
     
  11. Fabricarum

    Fabricarum Member

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    I received a new Rumba board - now the fan works :) ! Thanks to the support team!
     

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