Cannot Control EK Predator 240 Fans

Slurpee12

Reputable
Nov 19, 2015
240
0
4,710
Hello all, wondering if you could possibly help me with the issue I'm currently having.

I just got around to installing my Predator 240, had to buy a new case for it too. Anyways, I have the whole system wired up and everything works. However, I cannot control the fans on the predator (4 vardars in push-pull). I disconnected the pump from the fan hub and have it connected to the water pump header on my mobo (ASUS Maximus Hero VIII). I then connected the 2 extra fans into the original water pump header on the fan hub and the third fan header. I then connected the 4 pin header that originates from the 2 pin fan hub controller header to the cpu fan header on my mobo (can pull 1.0 amps, currently pulling .72). On start up, the fans run at 100% speed, but once I log into desktop they drop down to, what I'm assuming to be, their lowest possible speed.

I have no way of controlling the fan speed. I've tried AI Suite and SpeedFan and nothing works. In bios, PWM is enabled for all of my fan headers (triple checked), and I even changed all of fan controlling possibilities in bios (silent, standard, turbo, DC [yes I know DC is not PWM]), and nothing would allow me to control the fan speeds. I'm not sure what else to do, as I know that the CPU fan header works properly, it was just working before with PWM. This leads me to believe that the fan hub on the predator does not work. Does anyone have any suggestions on this issue?
 
Solution
Dedicated fan controller use voltage range to adjust fan's speed, some fans are made without step up/down voltage circuity, this DC/DC module usually at 12V - 8V - 6V range, will that conform to Intel's PWM signaling? many reported not if it connected to hub/splitter. You can check again if you run CPU intensive program such as corona render, on high load PWM your Vardar should be at top speed, and throttles down on idle.
Dedicated fan controller use voltage range to adjust fan's speed, some fans are made without step up/down voltage circuity, this DC/DC module usually at 12V - 8V - 6V range, will that conform to Intel's PWM signaling? many reported not if it connected to hub/splitter. You can check again if you run CPU intensive program such as corona render, on high load PWM your Vardar should be at top speed, and throttles down on idle.
 
Solution