When the server is idle all the temperatures on my server are below 45 C. 4 fans are throttled down to 800 RPM, but fan 3 is stuck at 8500 RPM and makes a very high noise. I've already updated BIOS/ME/FRU/SDR and the script correctly detects the chassis (redundant, non-HSBP), but the middle fan remains stuck. The PWM offset is set to 0, the fan profile is Acoustic and the CPU Power and Performance Policy is Balanced Power.
Is there anything I can do to improve this?