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Z87-A - bug in Asus Fan Xpert 2 - CPU fan is always at max speed.

MikeL1
Level 7

‎06-29-2013 12:28 PM - last edited on ‎03-06-2024 02:55 AM by Community Admin

Hello,

I've built a system with the Asus Z87-A motherboard. The system has 3 PWM case fans and the Arctic Freezer 13 as the CPU fan. The CPU fan is a 4-pin PWM fan as well.

I have a problem with the Asus Fan Xpert 2 software (part of the AI suit 3). I can control the 3 PWM case fans, but I cannot control the CPU fan through the software. While the software is installed, the CPU fan is always running at max speed. The speed-temperature graph through which you control the fan speed at different temperatures is grey, and I cannot change the speed of the fan in any way. However, I can see the RPM of the fan.

I've tried running the auto tuning from the xpert multiple times, but nothing changes. It does recognize the case fans and modifies their speed graphs, but the CPU fan remain at max speed all the time.

I can control the CPU fan speed through the bios just fine, so its not a hardware issue. However, the Fan Xpert overrides the Bios settings, so even if I modify the fan speed at the Bios, as soon as I go to windows the CPU fan is back to full speed.

I had to uninstall the fan xpert, and disable the asus fan control service, to prevent the CPU fan from spinning at max speed all the time. Now the fan's speed is dependent on the CPU temperature, as it should be.

I tried updating the Bios to the latest version, as well as installing the latest version of the AI suit, but that didn't help.
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14 REPLIES 14

thefunkygibbon
Level 7
In response to HiVizMan

‎09-09-2014 07:13 AM

does anyone have a solution for this as it happens with the z97 motherboard too (using arctic freezer 13) in fan xpert 3
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sookainian
Level 8
In response to thefunkygibbon

‎02-04-2015 11:54 AM

Any update on a solution for fan xpert 3?
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tuclis
Level 7
In response to sookainian

‎10-17-2015 05:47 PM

I'm having the exact same issue, except that uninstalling and reinstalling the software doesn't allow me to regain control. CPU spins at max speed and there is a '!' where the fan speed graph would be on the CPU. Using an Arctic Freezer 13 as well.
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Jerikman
Level 7
In response to tuclis

‎02-07-2016 01:41 PM

I have the exact same problem with my Impact VIII and cpu cooler Arctic Alpine 11 rev. 2.
FFS Asus?!!!
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Antony-rog
Level 8

‎12-22-2013 10:14 AM

Mine the auto didn't worked as well, so I configured the fans by tweaking the curve on the graphic of ai suite. I don't know why ai 3 does a worst job then ai 2 with the same fans, must be some issue that will be worked out on the next update, I think.
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