FX990 sabertooth UI issue?

hey folks I know theres a fair few people on here with the motherboard, I've got a problem. The mother board is not seeing any of the fans I have connected to the motherboard. Each fan is a corsair  Air Series AF120 there are 4 the mother board is not seeing them. I also have a corsair, h55 watercooler.

Temps seem ok   In the thermal radar,  but the thermal radar and the bios UI are not seeing the fans so I cant control any... I dont really understand why? could any one help me figure this out please?