Got my H100 back this morning from an RMA, and found that the fan controller unit on top of the pump was broken. It doesn't stay on. I have to say I'm really starting to get annoyed with Corsair and their quality control. I've had to do 4 RMA's for their Hydro Series units, wow I'm gonna have to RMA this one. Ughhhh. I just want a unit that works!!!!!!