Motherboard doesn't detect 4 pin PWM fans

LAxTristan · Feb 5, 2018

I recently got 2 new corsair SP120 High performance fans, which i plugged into CHA_FAN1 and CHA_FAN 2 on an Asus Z170 PRO gaming motherboard. The fans are 4 Pin PWM connectors so they should work fine. however the mobo doesn't detect them nor does software like HWmonitor

alexoiu · Feb 5, 2018

Same issue with the third CHA_Fan?

LAxTristan · Feb 5, 2018

Both of the fans aren’t working, however the same model fan which i have in the back. (Which was connected long ago) is in CHA_FAN1 and is detected and does work

alexoiu · Feb 5, 2018

Can you check in BIOS the settings for the 2 fans, if set to pwm?

LAxTristan · Feb 5, 2018

Both of the Fans are set to PWM mode in QFancontrol.

alexoiu · Feb 5, 2018

Is the working fan detected in the 2 problematic headers?

LAxTristan · Feb 5, 2018

They're not visible at all in the BIOS, i only see my CPU_FAN and Chassis fan 1 in the back

smashjohn · Feb 5, 2018

Make sure they're hard set to PWM in the bios.

Advanced > Monitor > Q-Fan Configuration > CPU Q-Fan Control

alexoiu · Feb 5, 2018

Try connecting the working fan to the other 2 headers and see if detected.

LAxTristan · Feb 5, 2018

I have tried connecting the new fans to CHA_FAN1, they didn't work. but as soon as i plug the old fan back into cha_fan 1 it spins immediately

LAxTristan · Feb 5, 2018

I also checked the qfan control under, monitor, qfan etc. the fans are all set to use PWM

LAxTristan · Feb 5, 2018

I tried my old fan in the connectors where the new fans will connect, and it works. i might have gotten dead fans

LAxTristan · Feb 5, 2018

I have found out the ring wasn't inserted all that well, it blocked the fan from spinning. i took them out (also switched them to the red rings) and plugged them in to find them working. Sorry for wasting your time!

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Motherboard doesn't detect 4 pin PWM fans

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