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H100 fans randomly speed up

post #1 of 7
Thread Starter 
Hi,

I recently purchased an H100 water-cooler, and while i am perfectly satisfied with the cooler it is doing something rather odd.

Every now and again, the fans suddenly speed up to maximum and then slowly return to normal. The PC is normally idle when this happens but sometimes it does happen under average load.

I have CoreTemp64 (set to 100ms polling interval) but this does not show any overheat at all (Min 10c Max 38c). I also tried SpeedFan but again this doesn't show any overheat. I have all temperature control / warnings disabled in the BIOS.

This does not happen very often, maybe once every few days, usually while im asleep (waking me up mad.gif ), it has only happened once while under load every other time has been when idle. Ive had the cooler for about 3 months now and the CPU for about 4.

What could be causing this? Should i be worried? Can i stop it doing this as is very loud and kind of annoying smile.gif

Thanks
Edited by Neonic - 1/30/13 at 9:29am
post #2 of 7
I'm assuming you're plugged into the PMW fan pin of your mobo? If so is your motherboard BIOS updated? Which mobo are you currently using?

Have you also upgraded to the newest version of their link software? Which version are you running? The newest version is 2.2.0 and is located HERE

Make sure to click on the download tab to actually see the download link link!
Edited by mark_thaddeus - 1/30/13 at 9:41am
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post #3 of 7
Thread Starter 
I am not using Corsair Link and from what i understand of the H100 the fans are not plugged into the motherboard they are plugged into the radiator unit which in turn is plugged in via 4pin molex. The cable that goes to the motherboard is the radiator pump and is usually only used to stop the motherboard complaining of a "No CPU fan" warning.

My motherboard is this: Gigabyte GA-970A-DS3 (http://www.gigabyte.com/products/product-page.aspx?pid=4122#ov) and is fully updated with the latest BIOS

So there is no "PWM" at least not from the motherboard

P.S i have the H100, not the H100i
Edited by Neonic - 1/30/13 at 2:12pm
post #4 of 7
Quote:
Originally Posted by Neonic View Post

I am not using Corsair Link and from what i understand of the H100 the fans are not plugged into the motherboard they are plugged into the radiator unit which in turn is plugged in via 4pin molex. The cable that goes to the motherboard is the radiator pump and is usually only used to stop the motherboard complaining of a "No CPU fan" warning.

My motherboard is this: Gigabyte GA-970A-DS3 (http://www.gigabyte.com/products/product-page.aspx?pid=4122#ov) and is fully updated with the latest BIOS

So there is no "PWM" at least not from the motherboard

P.S i have the H100, not the H100i

Apologies about the confusion, both fans of the H100 are re-wired on one connector and are controlled from a RPM controller on top of the cooling block, correct? The motherboard isn't controlling the the PWM fans, but the cooling block has a controller, a setting for silent, normal and performance mode.

If you are not using Corsair link how are you controlling the unit? I assume you're leaving the setting the fan at silent and then letting the pump run on auto?
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Crucial MX100 512 GB Corsair H55 dual fan (CPU) NZXT G10 Corsair H55 (GPU) 
OSMonitorKeyboardPower
Windows 7 Pro SP1 Asus PB278Q DK-9087 MX Red White Leds Seasonic 660X 
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OSMonitorKeyboardPower
Windows 7 Pro SP1 Asus PB278Q DK-9087 MX Red White Leds Seasonic 660X 
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post #5 of 7
Thread Starter 
Quote:
Originally Posted by mark_thaddeus View Post

Apologies about the confusion, both fans of the H100 are re-wired on one connector and are controlled from a RPM controller on top of the cooling block, correct? The motherboard isn't controlling the the PWM fans, but the cooling block has a controller, a setting for silent, normal and performance mode.

If you are not using Corsair link how are you controlling the unit? I assume you're leaving the setting the fan at silent and then letting the pump run on auto?

Yes the fans are controlled by the CPU block with has a button in the center to set the "minimum" low medium or high the fan. I am indeed leaving the setting on low, i don't think the pump has any "settings" it seems to sit at 2200rpm (according to the fan speed report) no matter the speed of the actual fans.

I thought at first maybe the block was detecting a temp spike but even with a 100ms polling interval nothing else seems to detect a temp change plus there is no reason for the temp to spike if the PC is idle.
post #6 of 7
I would recommend that you head over to the H series owner's club to get advice, since I do know that there are certain issues that they have handled concerning fans spooling up all of a sudden, pump noise, etc.

Here's the link to the thread: CLICK HERE

EDIT: Better yet here's CorsairGeorge's Profile (PM him), he's a hardware rep for Corsair and can definitely help you out!
Edited by mark_thaddeus - 1/31/13 at 6:18pm
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Intel i7-4790k Asus Z97I-Plus Galaxy 780 Ti HOF Edition Kingston Hyper X Fury 16 GB 1866Mhz 
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Crucial MX100 512 GB Corsair H55 dual fan (CPU) NZXT G10 Corsair H55 (GPU) 
OSMonitorKeyboardPower
Windows 7 Pro SP1 Asus PB278Q DK-9087 MX Red White Leds Seasonic 660X 
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Equinox
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CPUMotherboardGraphicsRAM
Intel i7-4790k Asus Z97I-Plus Galaxy 780 Ti HOF Edition Kingston Hyper X Fury 16 GB 1866Mhz 
Hard DriveCoolingCoolingCooling
Crucial MX100 512 GB Corsair H55 dual fan (CPU) NZXT G10 Corsair H55 (GPU) 
OSMonitorKeyboardPower
Windows 7 Pro SP1 Asus PB278Q DK-9087 MX Red White Leds Seasonic 660X 
CaseMouseMouse PadAudio
Silverstone FT03 Logitech G400S Razer Sphex Fiio E17 / E9K 
AudioAudio
Fidelio X2 HE-400i 
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post #7 of 7
Thread Starter 
Ok thanks for your advice ill check out the owners club and PM the guy you recommended.

Cheers
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