ASRock Forums : Gaming-ITX/ac fan control not working https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Wed, 15 Apr 2026 17:03:14 +0000 Wed, 03 Feb 2016 03:38:20 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=1908 <![CDATA[ASRock Forums]]> https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ <![CDATA[Gaming-ITX/ac fan control not working : All three are 3 pin connectors....]]> https://forum.asrock.com/forum_posts.asp?TID=1908&PID=9772&title=gamingitx-ac-fan-control-not-working#9772 Author: x6phenom
Subject: 1908
Posted: 03 Feb 2016 at 3:38am

All three are 3 pin connectors. Its so weird.. why would they even do this? I had to move my radiator fans to CPU_FAN and CHA_FAN1 and move my pump head connecter to the CHA_FAN2 (which doesnt control and runs at max always).

The problem is configuring fan profiles in BIOS. Since CPU_FAN1 responds to ? (CPU temp presumably) and the CHA_FAN1 can be configured for either motherboard or CPU. But when I set simialar fan profile settings, the CPU_FAN1 is always running at a lower speed than the CHA_FAN1 (no matter if I make it respond to motherboard or CPU temp).

It as pretty frustrating, eventually gave up and decided to use SpeedFan.
]]> Wed, 03 Feb 2016 03:38:20 +0000 https://forum.asrock.com/forum_posts.asp?TID=1908&PID=9772&title=gamingitx-ac-fan-control-not-working#9772 <![CDATA[Gaming-ITX/ac fan control not working : I ran into the same issue. Are...]]> https://forum.asrock.com/forum_posts.asp?TID=1908&PID=9767&title=gamingitx-ac-fan-control-not-working#9767 Author: tmorris
Subject: 1908
Posted: 03 Feb 2016 at 1:35am

I ran into the same issue.  Are you using 3-pin or 4-pin (PWM) fans.  I found that the CHA_FAN2 pin ran at full speed for voltage but worked if using a PWM fan.  Then I found this in the on-line specifications:
 
"CPU_FAN1 and CHA_FAN1 can auto detect if 3-pin or 4-pin fan is in use."
 
I think the first two can do both but the third can only control a PWM fan.
]]> Wed, 03 Feb 2016 01:35:42 +0000 https://forum.asrock.com/forum_posts.asp?TID=1908&PID=9767&title=gamingitx-ac-fan-control-not-working#9767 <![CDATA[Gaming-ITX/ac fan control not working : Updated from BIOS 1.7 to 1.8SYS...]]> https://forum.asrock.com/forum_posts.asp?TID=1908&PID=9760&title=gamingitx-ac-fan-control-not-working#9760 Author: x6phenom
Subject: 1908
Posted: 02 Feb 2016 at 11:03pm

Updated from BIOS 1.7 to 1.8

SYS / CHA_FAN2: control still not working



]]> Tue, 02 Feb 2016 23:03:58 +0000 https://forum.asrock.com/forum_posts.asp?TID=1908&PID=9760&title=gamingitx-ac-fan-control-not-working#9760 <![CDATA[Gaming-ITX/ac fan control not working : Hello,I have three fans:SYSCPUAUXI...]]> https://forum.asrock.com/forum_posts.asp?TID=1908&PID=9753&title=gamingitx-ac-fan-control-not-working#9753 Author: x6phenom
Subject: 1908
Posted: 02 Feb 2016 at 10:05pm

Hello,

I have three fans:
SYS
CPU
AUX

I am able to control CPU and AUX, but not SYS. Is this intended or a fault in the motherboard?

I opened my chassis to see which header corresponds to which signal:

CPU_FAN1 = CPU (can control)
CHA_FAN1 = AUX (can control)
CHA_FAN2 = SYS (control not working)

What should I do? Is this a BIOS or HW fault?

I used both SpeedFan and F-Stream to test.
]]> Tue, 02 Feb 2016 22:05:23 +0000 https://forum.asrock.com/forum_posts.asp?TID=1908&PID=9753&title=gamingitx-ac-fan-control-not-working#9753