I checked the SEL log file you sent and I noticed that it is showing errors for the Chassis intrusion switch.
This entry will make the fans to run at full speed. I would recommend making sure that the side cover is in place properly. If the issue remains, I would recommend gathering a new set of logs with our Intel System Information Retrieval Utility.
first of all thank you for the prompt reply. I removed and paced back again the cover as you suggested, but it didn't solved the problem. Actually I haven't opened the cover before or after the firmware update. I run the Intel System Information Retrieve Utility and indeed it was very helpful. The problem appeared at the first lines of the log:
BIOS Version....... SE5C600.86B.02.03.0003
BMC Firmware Version:
Op Code....... 1.21.6580
Boot Code.............. 01.17
ME Firmware Version:
Boot Code: 02.01.07.328
ME Health Status: CORRUPTED OR INACCESSIBLE DATA
SDR version: SDR Package 1.11
I updated the ME firmware from the EFI shell and the problem instantly solved. All sensors are reporting successfully and the FANs are operating at 1716 RPM completely silently.
So the ME firmware corruption is not reported at the Intel®Active System Console not even at the integrated bmc web console, but only running the Intel System Information Retrieve Utility.
Thank you for your extra fast ant accurate assistance