Hello people of the forum:
                                 I installed the card and it occurred to me to look at before playing and noticed that the fans were not working, then I happened to install EVGA precision and changing profiles "CUSTOM" or "Aggressive" fans began to work. But after closing the program the fans are switched off again. There is something that I miss you install or the card carries some additional pin (in addition to the 2 x 6) for the fans ???
From already thank you
 
sorry for my English I'm from Argentina and I'm using Google translate

yes, it is an ACX 2.0 and 60c. ??? wow ¡¡¡   previously had a Asus gtx 660 TI and did not exceed 50c.. The temperature that would support this 970 ??? It gives me some confidence that are not input those fans turned on. It will be a matter of getting used or perhaps used EVGA Precision?

MetalZQR
yes, it is an ACX 2.0 and 60c. ??? wow ¡¡¡   previously had a Asus gtx 660 TI and did not exceed 50c.. The temperature that would support this 970 ??? It gives me some confidence that are not input those fans turned on. It will be a matter of getting used or perhaps used EVGA Precision?

60c is NOTHING for a GPU. But like others have said, as soon as it starts heating up (like when you play a game or something) the fans will kick on.
 
It's an awesome card!

if you install PrecisionX to use a custom fan curve you shouldn't close it.
as soon as you close the PrecisionX the cards bios takes control of the fans again.

Just picked up a GTX 970 superclocked w/ACX 2.0, and my fans are also not turning on. I installed Precision and set a fan curve, but like someone else said, as soon as I close the fan curve window, the fans turn off. I set my curve and ran the Resident Evil 5 benchmark and watched as the temps crept upwards. 70C and nothing. 75C, nothing. At 80 I cancelled the benchmark and the fans were still not running. The only time I can get the fans to turn on is when I use the fan speed slider at the left side of the Precision interface, and even then it only seems to work about half the time. 
 
I didn't expect to have to use manual fan controls when I bought this card, as my GTX 770 with the ACX cooler handled its own fans just fine. 

I hate the fan profile! EVGA and others need to stop listening to the whiny few that complained about it not being like the strix! The fans can keep this card well under 65c in most mid towers running at only 30%. And for the people trying to run a semi-silent gaming rig, the fan profile is a disaster! Because the extra unnecessary heat build up can cause the CPU fan to spin like crazy, just to keep the CPU at normal temps. After that a semi silent rig becomes fairly audible. Also if the card can run cooler, And it can run much cooler than the factory fan profile. Then what the ---- is the point in buying a GPU with double fans? It makes no sense! It used to be when you bought a double cooler card, You never had to worry about messing with the fan speed. I would love to have the older fan profile rather than this one! The ACX coolers are nice, But the ACX 1 and 2 is not good enough for a semi-passive cooler setup! Because the VRMs and the backside V-ram are mostly left out from this cooler's setup, And there is allot more heat generating than just the 60c detected on the GPU chip. In other words don't set a semi-passive cooler setup on a cooler that was not designed for it! This cooler was design only for a non-passive fan profile. And it really irritates me that I have to run a extra program in the background just to keep the card properly cool. Especially after paying over $300 for the thing! The semi-passive setup is pointless anyway! Because the fans are still going to eventually run anyway! It's like washing a car so you can drive it through mud! It makes zero sense! 

my fans arent spinning regardless of tempature i got the card to 85 they didnt even try to spin.i even tried msi after burner and evgas precision and they didnt move at all is there a way to fix this without getting a new card 

i learned that it wasnt a software issue that i had it turns out my graphics card had to much sag and something wasnt connecting through the pcie slot causing fans not to receive power or commands so i tied some fishng line to the corner of the card and tied it up through the fan holes and now it dosent sag

@Cool

I get 250 fps using MSI Afterburner, Precision X 16 was only giving me 120 fps.

had same issue for anyone with this problem when pc boots press f2 the fans are being controlled by motherboard,with mine I disabled fan control saved setting and all fans are working ,so the problem is fixed in bios settings,easy

got it. linked to another forum post that explains what the switch does. who knows why it's set to master by default.
also, be smart. shut off the pc when changing that dip switch. hf.