rents1983
Posts: 4
Joined: Tue Jun 04, 2019 7:44 pm

Fans problem.

Thu Jun 13, 2019 6:28 pm

Hi everyone, I need your help with the fans on Raspberry Pi 3 B +.
The case I purchased has two fans that I connected directly to pins 4 and 6, and when the Raspberry is turned on they start automatically.
The problem is that after five minutes they stop and don't restart anymore, at least if they don't press the touch button in the case.
My question is: is there a way to make the fans stay on all the time (I'm not interested in checking the speed, is it enough that they never stop)?
Thanks and goodbye.

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HawaiianPi
Posts: 4237
Joined: Mon Apr 08, 2013 4:53 am
Location: Aloha, Oregon USA

Re: Fans problem.

Thu Jun 13, 2019 6:30 pm

What case did you purchase, and does the case control the fans?
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HawaiianPi
Posts: 4237
Joined: Mon Apr 08, 2013 4:53 am
Location: Aloha, Oregon USA

Re: Fans problem.

Thu Jun 13, 2019 6:49 pm

According to the description that case has temperature control, so the fans will only run when needed (when the Pi is hot). Try running a stress test to see if the fans turn on when the system is pushed hard. If it works as described then don't worry about it.

If you wanted the fans on all the time you should have purchased a simpler case without the control circuit.
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups...and where is that annoying music coming from?

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Imperf3kt
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Location: Australia

Re: Fans problem.

Thu Jun 13, 2019 9:52 pm

If your case includes a fan control circuit based on temperature and it us turning your fans off, then that tells me you don't need the fans.
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Anthony S
Posts: 40
Joined: Mon Apr 29, 2019 3:58 pm
Location: Bedfordshire, UK

Re: Fans problem.

Mon Jun 17, 2019 4:44 pm

Why do you want the fans to stay on all the time?
Are you concerned that the temperature control circuit isn't working properly?
One way to test it would be to increase the ambient temperature, perhaps by using a hairdryer blown at the case - but don't get it too hot!
Just an idea.

Cheers,

Tony.

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