Radiator fans not spinning at all

[newox]

I just finished setting up my first AIO, the ASUS ROG Strix LC 240 to replace my Intel stock cooler and tried testing it (even at high temperatures) and the radiator fans don't seem to spin at all. The rest of the AIO is working normally (i think), including the RGB lighting and the pumps but it's just the radiator fans. I'm assuming I either plugged the cable into the wrong place on my motherboard, or the cable is broken. I noticed that one of the two 4-pin connectors to connect to my 2 fans has only 3 pins (even though there are meant to be 4) while the other has 4 and thought that might've been the cause. I did try testing it on GTA5 at high settings and my cpu stayed at 80 degrees celsius even after I stopped playing and didn't go down at all. Any idea on how to fix this or what may be the cause would be greatly appreciated.

[WH2002]

it sounds like neither the fans, nor the pump is working. On startup go into the bios and check if the fans are detected at all, and if the fans are enabled. if they are not detected try plugging them into another fan header or changing the fan curves.

[Blai5e]

9 minutes ago, newox said:

I noticed that one of the two 4-pin connectors to connect to my 2 fans has only 3 pins (even though there are meant to be 4) while the other has 4 and thought that might've been the cause.

The reason one fan header has 3 pins and the other has 4 is so only one of the fans will supply the tachometer (revs) signal.

 

14 minutes ago, newox said:

I just finished setting up my first AIO, the ASUS ROG Strix LC 240 to replace my Intel stock cooler and tried testing it (even at high temperatures) and the radiator fans don't seem to spin at all. The rest of the AIO is working normally (i think), including the RGB lighting and the pumps but it's just the radiator fans. I'm assuming I either plugged the cable into the wrong place on my motherboard, or the cable is broken.

Did you connect the fan cable to an active fan header on the motherboard? You can check in the BIOS/UEFI to see if the fan header you connected to is set to PWM. Next make sure you have installed ASUS' Armoury Crate and check the "Device Control" section for the cooler's specific configuration. Sorry that I can't be more specific, I don't own one and this info was gleaned from the online manuals.

[newox]

32 minutes ago, Blai5e said:

The reason one fan header has 3 pins and the other has 4 is so only one of the fans will supply the tachometer (revs) signal.

 

Did you connect the fan cable to an active fan header on the motherboard? You can check in the BIOS/UEFI to see if the fan header you connected to is set to PWM. Next make sure you have installed ASUS' Armoury Crate and check the "Device Control" section for the cooler's specific configuration. Sorry that I can't be more specific, I don't own one and this info was gleaned from the online manuals.

I checked the BIOS/UEFI and it detected my chassis fan, which wasn't set to PWM and it for a reason I don't know detected a CPU fan running at 1800 wpm. I am honestly not sure where to connect my fan cable to on my motherboard (ASUS PRIME B365M-K) either, I can't seem to find another 4 pin connector. I have Armoury Crate but don't know where to check my cooler's specific configuration, as I cannot find Device Control. Thanks for the help so far.

[Blai5e]

24 minutes ago, newox said:

I checked the BIOS/UEFI and it detected my chassis fan, which wasn't set to PWM and it for a reason I don't know detected a CPU fan running at 1800 wpm. I am honestly not sure where to connect my fan cable to on my motherboard (ASUS PRIME B365M-K) either, I can't seem to find another 4 pin connector. I have Armoury Crate but don't know where to check my cooler's specific configuration, as I cannot find Device Control. Thanks for the help so far.

Connect the fans to your CPU header - it will be PWM by default.