Author: parsec
Subject: Only CHA_FAN1 working
Posted: 29 Dec 2016 at 12:02am
Unless the CHA_FAN2 header is not working, that does not make sense. The CM Jetflo is a four pin PWM fan, and the Sickleflow is a three pin voltage controlled fan.
We've heard reports that the four pin fan headers on the more budget oriented boards are only working in PWM mode, so the Jetflow at least should work on the CHA_FAN2 header.
Are you using the low noise adapter cable with the Jetflo fan? That makes it the equivalent of a three pin voltage controlled fan.
As a test, try installing your board's A-Tuning program. The FANTastic Tuning feature in it has a Fan Test button on each of the fan header screens. Select the CHA_FAN2 header screen and run the Fan Test by clicking that button. Try the Jetflo without the low noise adapter, the normal four pin connection. You should easily hear the Jetflo (I have several) at full speed, which is how the test starts. It then reduces the speed of the fan to its minimum speed, which also should be audible.
When the Fan Test is complete, the fan will again run at full speed. You must click the Apply button to select the fan speed profile on the screen, which by default matches the setting in the UEFI/BIOS. You could try the same thing with the three pin Sickleflo.
Please let us know what results you get.
Subject: Only CHA_FAN1 working
Posted: 29 Dec 2016 at 12:02am
![]() The fans I'm currently using are CM Jetflo 120. I've tried SickleFlow 120 from my old PC and it's the same as well. I understand that CHA_FAN3 is not adjustable since there is no option in the BIOS, but I can adjust the speed of CHA_FAN2. I've tried every percent % at all temps, using CPU source and motherboard source, yet the fan on CHA_FAN2 is running at 100%. Currently I can only adjust the speed of CHA_FAN1, quite disappointed. No I have no utility/tuning programs. Everything is set in BIOS. |
Unless the CHA_FAN2 header is not working, that does not make sense. The CM Jetflo is a four pin PWM fan, and the Sickleflow is a three pin voltage controlled fan.
We've heard reports that the four pin fan headers on the more budget oriented boards are only working in PWM mode, so the Jetflow at least should work on the CHA_FAN2 header.
Are you using the low noise adapter cable with the Jetflo fan? That makes it the equivalent of a three pin voltage controlled fan.
As a test, try installing your board's A-Tuning program. The FANTastic Tuning feature in it has a Fan Test button on each of the fan header screens. Select the CHA_FAN2 header screen and run the Fan Test by clicking that button. Try the Jetflo without the low noise adapter, the normal four pin connection. You should easily hear the Jetflo (I have several) at full speed, which is how the test starts. It then reduces the speed of the fan to its minimum speed, which also should be audible.
When the Fan Test is complete, the fan will again run at full speed. You must click the Apply button to select the fan speed profile on the screen, which by default matches the setting in the UEFI/BIOS. You could try the same thing with the three pin Sickleflo.
Please let us know what results you get.