Why is the fan blowing very hard?

It was my first time opening up a console because the LCD screen was damaged and wanted to replace it. After I was done replacing the LCD screen I accidently tore the fan ribbon cable during the process and when putting everything back together the fan was blowing very hard (didn't do that before). I am inexperienced but I assume it is because of the tear in the fan ribbon cable. Everything is working fine on the console. I just want to know if I have to replace the fan or if it is something else. I would appreciate the help.