I have the Bitspower Touchaqua Sedna O11D for LIAN LI O11 DYNAMIC (front)-PWM connected to my W_Pump+ 4 pin connector but no matter what I do, the pump runs at 4,800rpm and is very loud

Question

Pump is plugged into an ASUS Crosshair VIII Hero board. Tried setting the W_Pump+ connector to PWM mode and setting the duty percentage based on either my water in temperature or my CPU temp and nothing changes, it just always runs at ~4,800rpm and is rediculously loud.

Answer 1

Hello, it seems that the pump in your Sedna O11D is without PWM. Please check the receipt of the product, is it BPTA-WDPO11DA?