H80 Fans wont change speed, staying maxed out

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BronzeStar

Reputable
Aug 8, 2014
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Just swapped in an h80 and the fans run maxed out.

Both fans 3 pin connectors are running to the waterblock, and then the 3pin from the water block to the 4 pin 'cpu_fan1'

I also tried plugging into the 3 pin 'Pwr_fan1'

Just runs completely maxed out.
It's actually more like ONE is running maxed out, and the other is just kinda going. I can't really tell. They're loud AF. SpeedFan shows them running at 2200 rpm...

I have an asrock fm2a55m-hd+ mobo

The 'speed change' button on the waterblock doesn't do anything.

EDIT: Unplugged one of the fans, and it got extremely quiet so one of the fans is running maxed out, and ones not. but Speedfan is still reading it at 2200rpm now 2300rpm lol...

EDIT2: If I unplug both fans. Whichever fan I plug back in first to the water block on the h80 runs maxed out, and whichever fan I plug in second, runs at almost no speed.
If I unplug both fans, speedfan still reads a fan running at 2200-2300 rpm. What is Speedfan picking up?

 
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nostall

nostall

Splendid
Nov 28, 2012
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Try going into your BIOS/UEFI and disable the "Cool and Quiet" feature of your mother board, and you can also set the minimum fan speed for the header that your pump is connected to. Don't set it to low.
Speed fan is probably reading the pump speed since it is the only thing connected to the mother board.
 
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B

BronzeStar

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Aug 8, 2014
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4,510


Appreciate the response. I have everything in the Bios turned off that would regard cooling or throttling in any way.
That being said, I believe one fan, was forcing the other fan to spin faster. I had the fans set up to suck air out of the case, And the outside fan was extremely loud, The fan sucking air OFF the radiator and blowing out of the case. I switched them and now they're blowing air in.
Not sure why but it's like 100million times quieter.

Also, I can't hear or be able to validate any fan speed changes since their plugged into the h80 pump header. However I ran a few tests, and The temps noticeably dropped every time I clicked to "change fan speed" on the h80 pump. So I know they have to be working.

Not a bad cooler, Got it super cheap. Just wish I didn't have to change fans and get a header splitter to read fan speeds.
 
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