Phanteks PWM Hub with SpeedFan

[dkD0nkeyniks]

According to the Phanteks PWM Hub manual I need to connect the Hub to a true PWM 4-pin header of the MOBO if I plan on using the 12V SATA cable, otherwise connecting the 12V SATA cable will cause all fans to run at full speed. After taking a look at the BIOS I found out the the CPU-FAN header is the only true PWM, the other one (SYS_FAN1) is voltage controlled.

I went into the BIOS and changed the fan control mode of the CPU_FAN header from Automatic to PWM (the other option was Voltage); however, when I started up SpeedFan all 6 fans connected to it ran at 100% RPM (I even set the speed control to 0% to see if any of the fans would stop, and none of the stopped).

For now I am using the hub without connecting the 12V SATA cable, so it is currently voltage controlled, not PWM, my issue with that is when the speed control is set to anything below 70% the LEDs on the fans starts blinking.

I would appreciate it if anyone could help me figure out how to make the HUB work with PWM control.

MOBO: Gigabyte 990FXA-UD3 R5
Processor: AMD FX-8370
RAM: Corsair Vengeance Pro 8GB (2 x 4GB) DDR3-2400
Graphics Card: MSI Geforce GTX 1070 Gaming X 8GB
SSD: Kingston SSDNow V300 Series 120GB 2.5"
HDD: Western Digital BLACK SERIES 1TB 3.5" 7200RPM
Case: Phanteks Eclipse P400
CPU Cooler: Cryorig H7
3 Intake Fans
3 Exhaust Fans

 

[Paperdoc]

You are correct about the abilities of your mobo's fan headers. ONLY the CPU_FAN header can provide the PWM signal required by the Phanteks PWM Hub. The net result is that ALL of your fans - CPU cooler AND case ventilation units - will have to be connected to that Hub, and there is a particular way for that to be done.

From the Phanteks PWM Hub there are two connections. Its fan cable ending in a 4-pin female connector MUST go to the mobo's CPU_FAN header. Then its other cable ending in a wide connector must plug into a SATA power output connector directly from the PSU.

The Hub has six 3-pin output ports, of which one is white. You have seven fans in total, and the Hub comes with two Splitters to help. You MUST plug your Cryorg CPU cooling system's fan into the WHITE Port #1 of the Hub. This is the ONLY hub port that can send back to the CPU_FAN header the speed of its fans, and it is IMPORTANT that the fan speed sent back from here is the one that really does cool the CPU. The CPU_FAN header makes special efforts to monitor the CPU cooler so ensure it never fails and causes heat damage to your CPU. Then you can connect your six case vent fans to the other five Hub ports, using one Splitter for two of those fans.

You are correct to set the CPU_FAN header to use PWM Mode for control. Also be sure that the "CPU Fan Speed Control" is set to "Normal" so it will use its automatic control system. After making any adjustments, be sure to use the SAVE and EXIT options to get out of BIOS Setup with saved settings.

You should be aware of what the information displayed means. A mobo fan header can only deal with the speed signal from ONE fan. With your system connected correctly as above, the CPU_FAN speed will be the fan on the Cryorg cooler as it should be. You will NOT be able to see ANY other fan speed because none of them will be forwarded to any place that can measure them. For the future, this means that, from time to time, it will be your responsibility to check that all the case fans are working, because the mobo has no way to warn you of failure.

I don't use Speedfan, so I'm not sure what it displays. But remember, the ONLY speed you can "see" and rely on, no matter what tool you use, is the CPU fan speed. I suggest also that you check carefully whether Speedfan has made any changes to your CPU_FAN header configuration settings.

You might also check the CD that came with your mobo. Very often it includes a utility app that you can install to run under Windows to monitor and adjust your fan system when running (as opposed to just using BIOS Setup to check them). This is a good tool to use instead of Speedfan, and it is already calibrated to use with your mobo.

 

[oilerspowerhouse]

Hi guys.
I am having an issue related to this but my system just shut down and not powering whatsoever, no matter what CPU_Fan1 orPWM-CFGI connection responds to any order of connections now. I have another thread here and did not solve anything. Hoping Grandmaster or anyone can help! Here is the thread link:
http://www.tomshardware.com/answers/id-3596608/troubleshooting-short-fan-psu-lights-tower-asus-780-gtx-card-mobo-desktop-powering-anymore.html

Built all brand new desktop, had it working perfectly except Intel CPU fan did not spin at all. Then decided for some dumb reason to try to see if Intel cpu fan cable would work in CPU_1 Fan slot on motherboard.
I plugged intel cpu fan cable into Asrock H170M pro4 motherboard slot for PWM fan hub control using with phanteks enthoo luxe tower. CPU fan turned less than 1/4 turn then stopped dead, lights on ASUS 780 GTX graphics card went out & mobo/desktop stopped powering on completely.
Have tried everything I can think of...Unplugged PSU, Switched off power bar, pulled out and re-plugged all cables, pulled battery and put back in, pulled graphics card and tried testing plugging monitor into I/O on mobo and still not powering or anything. Just tried replacing PSU with brand new one and nothing.
Only thing I can deduce is the PWM hub may be fried, but PSU light switch still comes on, if not that the motherboard, or maybe CPU??
Feel really stupid to mess with it when I had it working, any help is greatly appreciated!

 

[Paperdoc]

In the linked other thread, oilerspowerhouse has posted a later note. ASRock has confirmed the PWM_CFG1 poet is NOT ever to be used by users, and cannot be used to connect anything to do with fans. In fact, on an ASRock discussion forum here

http://forum.asrock.com/forum_posts.asp?TID=3700&title=pwm-cfg1-header-on-asrock-z170m-pro4

It says the port is used in the factory at production tie to program the PWM fan controller systems.

Actually, both of the CHA_FANn headers on that mobo are supposed to be using only PWM Mode for control according to the mobo manual, so there is no need to use the CPU_FAN header for connection to the Phanteks PWM Hub that came with the case.

What may have happened is that the mis-connection of the CPU cooling fan to that odd port burned out the fan, and that's why it no longer works.

There may be another factor for why nothing else is working now, either. The situation is that there is NO fan connected to the CPU_FAN header that works and sends back to that header a speed signal. Now, many mobos monitor that CPU_FAN header carefully to be SURE that the CPU gets proper cooling. If it fails to receive a fan speed signal, it shuts everything down and refuses to let you start it up with apparently NO cooling for the CPU. So, I hope that, once the faulty fan is replaced and can do its job and IS plugged into the CPU_FAN header, the system will start up properly.