I disconnected a component from a PWM header and the software still reports a static RPM value, why is that? Eva June 03, 2021 13:57 Updated Sometimes the RPM reading remains at the last read value in the controller memory and resets after a controller reset. Related articles The PWM settings don't have any effect on the actual fan/pump speed, what is wrong? How do I buy the EK-Care Package? What do the "Bleed Air" and "Full Speed Bleeding" buttons under Support & Settings do? How can I adjust the offset for the temperature sensors T1, T2, and T3? Why is there only one designated pump header? Comments 0 comments Article is closed for comments.