C'mon Corsair do you not test updates before you release it?
I had this exact same issue, I had no idea why my fans were a lot louder than usual so after looking into it, opening CL4 and my h115i now showing up started to annoy me, after multiple installs/unistalls and restarts. I decided to install an older version, I had version v4.7.0.77 still in my downloads, installed it and now it works like a charm.