Goya

Hey guys ! First of all, sorry for my bad english :] So, I bought 2x3 fans for my new pc case (H440). Since i'm a noob, I asked someone to install them. The guy did, and after the first test, only one of the two controller were actualy detected by the software. I tested everything (driver, cleaning, switching port) and even take my whole Pc to a professionnal who didnt found a problem at all. My MOBO is an Asus x99 Deluxe, everything is connected correctly since the non recognized fan are red and turn. What could be the problem ? If one of my controller dead, can i get another free of charge ? I'm already asking myself if I should return them and put on the basic case fan.. Thank for your future help !