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  1. #1
    New ROGer Array skiiwee29 PC Specs
    skiiwee29 PC Specs
    MotherboardAsus Crosshair VI Hero
    ProcessorAMD Ryzen 7 3700x
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    CH6 WPump header problem

    Hey all,

    Hoping people can give me some help here. I have been on several different BIOS versions and in each sometimes my WPump header reverse its speeds so to speak, causing my water pump to basically shut down even though I have it set to a certain PWM in the BIOS. Meaning say I have it set to 80% in the BIOS, something happens and it goes down to 20% and so on and so forth.. only way to resolve this is to reboot my machine. Presently I am on BIOS 7403 but have had time on the last 3 or so BIOS with the same issue as well as older ones previous to Ryzen 3000 launch and release. Pump is an EK D5.

  2. #2
    New ROGer Array
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    Try DC mode and see if that works at all. Maybe it's a PWM issue?

  3. #3
    New ROGer Array skiiwee29 PC Specs
    skiiwee29 PC Specs
    MotherboardAsus Crosshair VI Hero
    ProcessorAMD Ryzen 7 3700x
    Memory (part number)F4-3200C14D-16GFX
    Graphics Card #1EVGA RTX 2080ti
    Storage #1Samsung 850 Evo 250gb
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    Quote Originally Posted by TechyInAZ View Post
    Try DC mode and see if that works at all. Maybe it's a PWM issue?
    Dont think DC will work since the fan header on the pump is just 2 wires, ground and PWM. The pump has a dedicated power source so no DC control over the fan header.

  4. #4
    ROG Guru: Yellow Belt Array andyliu PC Specs
    andyliu PC Specs
    MotherboardCrosshair VII Hero
    ProcessorAMD Ryzen 7 3700X
    Memory (part number)(32GB) 2*F4-3200C14D-16GFX
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    can just disable the pump control completely and see if it stay @ full speed.
    and you can also use the pwn header of the pump in some other fan header to see if you get proper control
    if you do, then maybe something is wrong with pump header?

    I dont know if your other fans are affected.
    monitoring software can glitch the fan/pump control, asus has beta bios to address it, not yet released (I assume it also applies to c6h)
    the current workaround is disable EC support for Hwinfo64, that's the only one i uses so I can only provide that info.

  5. #5
    New ROGer Array skiiwee29 PC Specs
    skiiwee29 PC Specs
    MotherboardAsus Crosshair VI Hero
    ProcessorAMD Ryzen 7 3700x
    Memory (part number)F4-3200C14D-16GFX
    Graphics Card #1EVGA RTX 2080ti
    Storage #1Samsung 850 Evo 250gb
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    Quote Originally Posted by andyliu View Post
    can just disable the pump control completely and see if it stay @ full speed.
    and you can also use the pwn header of the pump in some other fan header to see if you get proper control
    if you do, then maybe something is wrong with pump header?

    I dont know if your other fans are affected.
    monitoring software can glitch the fan/pump control, asus has beta bios to address it, not yet released (I assume it also applies to c6h)
    the current workaround is disable EC support for Hwinfo64, that's the only one i uses so I can only provide that info.
    I have all fan control in the BIOS disabled. I have moved the pump from the w_pump+ header over to the CPU Fan Header and it made zero difference. The fans I have in my system are connected via my Corsair Commander Pro and controlled through iCue so they're not affected by the issue.

  6. #6
    New ROGer Array skiiwee29 PC Specs
    skiiwee29 PC Specs
    MotherboardAsus Crosshair VI Hero
    ProcessorAMD Ryzen 7 3700x
    Memory (part number)F4-3200C14D-16GFX
    Graphics Card #1EVGA RTX 2080ti
    Storage #1Samsung 850 Evo 250gb
    Storage #2Samsung 970 Evo 1tb
    CPU CoolerFull Custom loop
    CaseFractal Design Meshify S2
    Power SupplyEVGA 750w G2
    OS Windows 10 Pro

    Join Date
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    Nothing is seemingly working, so I guess I am going to be forced to run my pump at 100% speed only off DC power and unplug the header from the motherboard.

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