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CPU fan error on bootup after installing CM Sickle Flow on Asetek FX water cooler

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August 28, 2013 2:34:56 PM

So I am having having a strange error beep on boot-up. I just installed a Cooler Master Sickle Flow 120mm fan on my water cooler radiator (an Asetek FX branded WC, the one they sell boxed with the FX8xxx series cpus) and on boot-up I get a CPU fan error message, and it requests me to enter the bios. I can then boot into Windows after exiting the bios, but I get the same error if I restart the PC. The fan appears to be working correctly. If I install the original fan back on the radiator, I do not get the same error message. Any ideas? The original fan was just a stock Cooler Master A12025-12CB-3JN-F1 fan. Motherboard is an Asus m5a99x evo r2.0 w/ AMD 8350.
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August 28, 2013 2:50:35 PM

its likely down to the starting voltage being quite high. 7.9v+/- most pwm cpu fans start at around 6v and then switch up to 10-12v as the rpm climbs so it could be the bios is grumbling about the extra volts being needed. simple solution is to turn fan fail warning off.
you could of course try sending it back for replacement but from the reviews and specs i saw the replacement will likely cause the same problem.

also the actual tested specs are different to whats on the coolermaster site. they say its 0.35a but its been tested and showed the real operating amperage as 0.5a.
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August 28, 2013 3:05:26 PM

HEXiT said:
its likely down to the starting voltage being quite high. 7.9v+/- most pwm cpu fans start at around 6v and then switch up to 10-12v as the rpm climbs so it could be the bios is grumbling about the extra volts being needed. simple solution is to turn fan fail warning off.
you could of course try sending it back for replacement but from the reviews and specs i saw the replacement will likely cause the same problem.

also the actual tested specs are different to whats on the coolermaster site. they say its 0.35a but its been tested and showed the real operating amperage as 0.5a.

Hmmm.... well I won't send it back then. Don't really want to turn the fan warning off though. UGH!!!
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August 28, 2013 3:22:14 PM

Question - I plugged the Sickle Flow fan into the CPU OPT plug on the motherboard. If for some reason the fan failed, would it still be monitored for failure via the bios when plugged in this fan plug?
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August 28, 2013 3:22:15 PM

CooLWoLF said:
HEXiT said:
its likely down to the starting voltage being quite high. 7.9v+/- most pwm cpu fans start at around 6v and then switch up to 10-12v as the rpm climbs so it could be the bios is grumbling about the extra volts being needed. simple solution is to turn fan fail warning off.
you could of course try sending it back for replacement but from the reviews and specs i saw the replacement will likely cause the same problem.

also the actual tested specs are different to whats on the coolermaster site. they say its 0.35a but its been tested and showed the real operating amperage as 0.5a.

Hmmm.... well I won't send it back then. Don't really want to turn the fan warning off though. UGH!!!


Turn off q-fan or smart fan whatever its called for the cpu. I have the M5A99FX Pro 2.0 which might as well be the same board and I have no issues with the sickleflows I use on my 212 Evo with that setting off.
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August 28, 2013 3:23:17 PM

you will know if a fan is failing mate they rarely go pop. more often the start mumming and gringing as they wobble on there spindles/bearings.
so as long as you know its staring up fine turning off the fan warning is a viable option. or you can invest in a better fan like the noctua 12's or if you want led's corsaire do some decent pretty blue fans.
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August 28, 2013 3:23:52 PM

cmi86 said:
CooLWoLF said:
HEXiT said:
its likely down to the starting voltage being quite high. 7.9v+/- most pwm cpu fans start at around 6v and then switch up to 10-12v as the rpm climbs so it could be the bios is grumbling about the extra volts being needed. simple solution is to turn fan fail warning off.
you could of course try sending it back for replacement but from the reviews and specs i saw the replacement will likely cause the same problem.

also the actual tested specs are different to whats on the coolermaster site. they say its 0.35a but its been tested and showed the real operating amperage as 0.5a.

Hmmm.... well I won't send it back then. Don't really want to turn the fan warning off though. UGH!!!


Turn off q-fan or smart fan whatever its called for the cpu. I have the M5A99FX Pro 2.0 which might as well be the same board and I have no issues with the sickleflows I use on my 212 Evo with that setting off.

With the q-fan or smart fan on, were you getting the same error?
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August 28, 2013 3:27:24 PM

HEXiT said:
you will know if a fan is failing mate they rarely go pop. more often the start mumming and gringing as they wobble on there spindles/bearings.
so as long as you know its staring up fine turning off the fan warning is a viable option. or you can invest in a better fan like the noctua 12's or if you want led's corsaire do some decent pretty blue fans.

Well, its funny, the whole reason I got this fan was for the red led. And it turns out its not very bright at all!! I read that in the reviews how they aren't very bright, but I still figured I'd give it a shot. I was trying to maintain the red led look of my case, while getting a higher static pressure fan for my radiator. Since its not very bright anyway, I just bought a Corsair Air Series SP High Static Pressure fan and I'll give that a shot. If I can't have high pressure plus a bright led, then I can at least get high pressure!
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August 28, 2013 3:49:10 PM

CooLWoLF said:
cmi86 said:
CooLWoLF said:
HEXiT said:
its likely down to the starting voltage being quite high. 7.9v+/- most pwm cpu fans start at around 6v and then switch up to 10-12v as the rpm climbs so it could be the bios is grumbling about the extra volts being needed. simple solution is to turn fan fail warning off.
you could of course try sending it back for replacement but from the reviews and specs i saw the replacement will likely cause the same problem.

also the actual tested specs are different to whats on the coolermaster site. they say its 0.35a but its been tested and showed the real operating amperage as 0.5a.

Hmmm.... well I won't send it back then. Don't really want to turn the fan warning off though. UGH!!!


Turn off q-fan or smart fan whatever its called for the cpu. I have the M5A99FX Pro 2.0 which might as well be the same board and I have no issues with the sickleflows I use on my 212 Evo with that setting off.

With the q-fan or smart fan on, were you getting the same error?


Couldn't tell ya, I never had it on with the sickleflows. All the same it is the only fan speed related settings I saw in the BIOS. Noise doesn't bug me so it's been off since jump street.
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August 28, 2013 3:58:57 PM

CooLWoLF said:
HEXiT said:
you will know if a fan is failing mate they rarely go pop. more often the start mumming and gringing as they wobble on there spindles/bearings.
so as long as you know its staring up fine turning off the fan warning is a viable option. or you can invest in a better fan like the noctua 12's or if you want led's corsaire do some decent pretty blue fans.

Well, its funny, the whole reason I got this fan was for the red led. And it turns out its not very bright at all!! I read that in the reviews how they aren't very bright, but I still figured I'd give it a shot. I was trying to maintain the red led look of my case, while getting a higher static pressure fan for my radiator. Since its not very bright anyway, I just bought a Corsair Air Series SP High Static Pressure fan and I'll give that a shot. If I can't have high pressure plus a bright led, then I can at least get high pressure!


dont be fooled by things like high static pressure. while a good static pressure number is preferred, they mean nothing unless there paired with air flow to give the fans overall ability to push air through it. using either of the variables singularly to measure a fans performance is meaningless. yes you will see them on the labels but its pure marketing tech babel.

you should be able to get the corsair fans in red.



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