@nspasov   Thanks to the information from @ThierryF, I bought 3 refurbished motherboards and everything worked very well. Update to the latest BIOS version. I also recommend changing the fans 

Thank you very much for the information. I'm going to contact the TAC to see if the warranty applies. regards

Good morning friend. I would like to know if the TAC can solve your problem with stopped fans. Thank you for your attention.

Good morning friend. I have the same problem as 3 C220 M4 servers. Which all 6 fans stopped. Update to the latest version of BIOS and CIMC ucs-c220m4-huu-4.1.2f.iso. I hope you have some information. Thanks