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Need Help With Fan Controller

post #1 of 7
Thread Starter 
My computer is actually liquid cooled with 2x 480mm radiators, but on each of those radiators I have 8 fans for a total of 16. So I invested in 4 4-to-1 PWM Splitters that I was hoping to use to hook all of my fans up to my fan controller, a G-Vans 6-Channel Fan Controller. However, after hooking everything up, it turns out that for some reason my fans will only operate at maximum RPM regardless of what setting I have this controller set to. My best bet is that the Molex connection that is on these splitters is constantly sending the maximum voltage to these fans and ignoring the PWM signal. Does anyone know how I can fix this, or if it's even possible with this particular splitter? And if not, does a 4-to-1 splitter exist that would work?

Thank you in advance.
post #2 of 7
I think most PWM fans default to 100% when there is no PWM signal. Have you tried hooking just one of the fans into the controller. If it still goes all out then it's probably the controller, if not it's the cable. You could also try connecting it to any PWM connectors on your motherboard and test it that way.
post #3 of 7
Does that controller have enough PWM channels? Is it This, I think that's two PWM and four normal? That would seem to only give eight fans with 4-to-1 splitters.
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Not SLi any more
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post #4 of 7
Thread Starter 
Quote:
Originally Posted by Darren9 View Post

Does that controller have enough PWM channels? Is it This, I think that's two PWM and four normal? That would seem to only give eight fans with 4-to-1 splitters.

No the controller you linked is not the same one that I have, though I wish I had known about that one when I purchased mine frown.gif. Mine just has 6 PWM channels. I have my pump plugged into one of them (Using a 4-pin to 3-pin adapter) and it works perfectly, so I know that the entire controller isn't faulty, and I find it really hard to believe that 4 out of 6 of the remaining channels would all be broken. I was hoping to avoid having to test the theory using my motherboard though because it was a real pain trying to get all of these fans plugged into this controller, but I will give it a shot.
post #5 of 7
It might be like that one, I've found quite a few that only have a PWM pass through for a pump and the rest are just voltage regulation which would basically be canceled out if they are getting power from something else (the molex connector on that splitter).
post #6 of 7
From where did you get the idea that your controller outputs PWM signal, I don't see any reference to that in your link. If PWM control isn't explicitly mentioned nowhere then I would assume that it only works with voltage control. PWM splitters naturally don't work with a controller like that.
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Shinobi XL
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Cosmos 2
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Raven RV03
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post #7 of 7
Hook your PWM splitter to your motherboard PWM signal and molex to PSU. Keep in mind that only one fan will send rpm signal to motherboard.

All fans in my system are controlled this way. wink.gif
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