CPU fan and PUMP

[Straw Hat]

Hello there,

I am creating this post because I would like to know why the CPU fan and the PUMP are on 0RPM. Is there anything I can do to put them to start working? It's weird, I have been using full fan speed for all the fans to deal with the hot the PC was generating and was okay but now I have put the fans on default mode because the noise is a bit annoying. Can someone tell me how can I put the CPU fan and PUMP working? I'm completely new with this. I'm using a Ryzen 7 2700x.


Image: https://imgur.com/a/qpsDz6u

Thanks.

[r.linder]

It's best to have the pump at least running at 100% constantly.

[Straw Hat]

Originally posted by Escorve:

It's best to have the pump at least running at 100% constantly.

How can I do it?

[r.linder]

Originally posted by Hiroki:

Originally posted by Escorve:

It's best to have the pump at least running at 100% constantly.

How can I do it?

The cable for the pump/AIO CPU cooling block should be plugged into CPU_OPT, or CPU_FAN header if OPT header isn't applicable, with fans on a different header (either CPU_FAN or other fan headers if CPU_FAN is taken by the block)
Then just set the fan curve in BIOS for whatever header the block is connected to as 100%.

If you're using a fan curve based on temperatures that ramps up the fan when needed, then it's going to run at a low RPM when idle.

[Straw Hat]

Originally posted by Escorve:

Originally posted by Hiroki:

How can I do it?

The cable for the pump/AIO CPU cooling block should be plugged into CPU_OPT, or CPU_FAN header if OPT header isn't applicable, with fans on a different header (either CPU_FAN or other fan headers if CPU_FAN is taken by the block)
Then just set the fan curve in BIOS for whatever header the block is connected to as 100%.

If you're using a fan curve based on temperatures that ramps up the fan when needed, then it's going to run at a low RPM when idle.

Alright, let me check. Thanks for the help. :D

[Straw Hat]

Originally posted by Escorve:

If you're using a fan curve based on temperatures that ramps up the fan when needed, then it's going to run at a low RPM when idle.

As fas as I know, the pump is where the liquid is to make it flow through the tube but I dont see the pump. If there is not a pump, why it shows on the BIOS? There is something that I can confirm, the CPU fan doesn't work when turning the PC, it did fews minutes ago to 734RPM but went to 0RPM again.

I don't see any cable available to plug to another port.

Image of the cooling CPU: https://imgur.com/a/8cUVFiU

[[☥] - CJ -]

The pump is located on the CPU block, its part of the block that goes on the CPU.
Where it says Cooler Master, thats the pump.

If the fan/pump is controlled via the Motherboard you may have to go into the BIOS and check the fan settings. I would leave the CPU fan header setting at Auto or PWM. Its likely saying 0RPM because the system cant tell that its an AIO and not a Fan.

Is the fan connected to the AIO for power or does it have a separate fan wire?

Playing a game to ramp up the CPU temp should also tell you if its working properly, it may not kick in until the CPU reaches a certain temp. So you'll have to monitor your temps while you test it. If Cooler Master has software for that AIO you should check that as well, it likely does.

Setting a fan profile for an AIO pump possibly wouldnt be a good idea as they dont work the same as an actual fan. So i would default/disable the CPU fan profile, a Radiator fan should always be running anyway.

[tacoshy]

What cooler do you use?

If you use an AiO then the fan speed and the pumpbspeed is controlled by the AiO not by the motherboard. The CPU header is only used by the AiO tinfoil the motherboard that a cooler is connected or otherwise it will prevent you from booting for safety reasons.
After booting you can even disconnect the cable and everything will still run correctly as the cable as said above is just a dummy.

As a result you won't get any monitoring by the motherboard as those pins are not in use.

[ericcui1]

A lot of AIOs only use CPU_FAN header for power. Make sure the fans and pump head are connected correctly. Usually one 4 pin form the pump head connects to the CPU_FAN header, and fans should be connected to the pump head.
Also you have to set CPU_FAN speed to 100% to ensure the AIO always get enough power for pump and fans. The actual fan and pump speeds are controlled by the AIO's firmware , which regulates the speeds by monitoring liquid temperature.

[r.linder]

Originally posted by ericcui1:

A lot of AIOs only use CPU_FAN header for power. Make sure the fans and pump head are connected correctly. Usually one 4 pin form the pump head connects to the CPU_FAN header, and fans should be connected to the pump head.
Also you have to set CPU_FAN speed to 100% to ensure the AIO always get enough power for pump and fans. The actual fan and pump speeds are controlled by the AIO's firmware , which regulates the speeds by monitoring liquid temperature.

It really doesn't matter which header the AIO pump is connected to, whether it be CPU_FAN or CPU_OPT. They both do the same thing either way, because I tested both my CPU_FAN and CPU_OPT headers just to see if there was any difference -- there isn't, even though Gigabyte says that CPU_OPT is for liquid cooling.

[tacoshy]

No AiO I know use the CPU-Fan header for power. Like I said it is just a dummy cablevto fool thebmotherboot and allowing it to boot.
Power for AiO is gained through SATA for the fans and for the pump through USB internal.

Easiest way to test is to remove the cable while running...

Sorry wrong link:
https://m.youtube.com/watch?v=p_VeeC1Rs4c

[Straw Hat]

Originally posted by ☥ - CJ - 8/6/19 - Meja 8/30/19:

The pump is located on the CPU block, its part of the block that goes on the CPU.
Where it says Cooler Master, thats the pump.

If the fan/pump is controlled via the Motherboard you may have to go into the BIOS and check the fan settings. I would leave the CPU fan header setting at Auto or PWM. Its likely saying 0RPM because the system cant tell that its an AIO and not a Fan.

Is the fan connected to the AIO for power or does it have a separate fan wire?

Playing a game to ramp up the CPU temp should also tell you if its working properly, it may not kick in until the CPU reaches a certain temp. So you'll have to monitor your temps while you test it. If Cooler Master has software for that AIO you should check that as well, it likely does.

Setting a fan profile for an AIO pump possibly wouldnt be a good idea as they dont work the same as an actual fan. So i would default/disable the CPU fan profile, a Radiator fan should always be running anyway.

Thank you very much. I will check it tomorrow. I need to go in a bit.

I will check it tomorrow morning, thanks guys.

[ericcui1]

Originally posted by tacoshy:

No AiO I know use the CPU-Fan header for power. Like I said it is just a dummy cablevto fool thebmotherboot and allowing it to boot.
Power for AiO is gained through SATA for the fans and for the pump through USB internal.

Easiest way to test is to remove the cable while running...

https://www.einfachschoen.me/schlafende-hunde/

As far as I know, most AIOs form Corsair draw power from fan header, USB is only for enabling software control. They dont have SATA connectors.

[r.linder]

Originally posted by ericcui1:

Originally posted by tacoshy:

No AiO I know use the CPU-Fan header for power. Like I said it is just a dummy cablevto fool thebmotherboot and allowing it to boot.
Power for AiO is gained through SATA for the fans and for the pump through USB internal.

Easiest way to test is to remove the cable while running...

https://www.einfachschoen.me/schlafende-hunde/

As far as I know, most AIOs form Corsair draw power fan header, USB is only for enabling software control. They dont have SATA connectors.

Some of them do use a PSU's SATA connectors for power.

[ericcui1]

Originally posted by Escorve:

Originally posted by ericcui1:

A lot of AIOs only use CPU_FAN header for power. Make sure the fans and pump head are connected correctly. Usually one 4 pin form the pump head connects to the CPU_FAN header, and fans should be connected to the pump head.
Also you have to set CPU_FAN speed to 100% to ensure the AIO always get enough power for pump and fans. The actual fan and pump speeds are controlled by the AIO's firmware , which regulates the speeds by monitoring liquid temperature.

It really doesn't matter which header the AIO pump is connected to, whether it be CPU_FAN or CPU_OPT. They both do the same thing either way, because I tested both my CPU_FAN and CPU_OPT headers just to see if there was any difference -- there isn't, even though Gigabyte says that CPU_OPT is for liquid cooling.

Sorry English is not my first language. What I mean was, a lot AIOs get power form a fan header. Of course form the AIO's perspective which header make no difference. But might as well connect to the CPU_FAN header, at least stops the "CPU fan not working" error message when posting.

[ericcui1]

Originally posted by Escorve:

Originally posted by ericcui1:

As far as I know, most AIOs form Corsair draw power fan header, USB is only for enabling software control. They dont have SATA connectors.

Some of them do use a PSU's SATA connectors for power.

Yeah, it's a model specific thing. For OP's question, best refer to the manual, make sure everything was connected correctly.