We have been having an issue with the ac that is sometime pretty annoying. For some reason it seems to not know where to blow the air out. It changes where it blows from continuously for minutes at a time. Even using the directional options and setting them to blow air towards you does nothing. At times it seems that all the vents are blocked because initially i thought it was coming out of the defroster vent but it is not. Any ideas? Would this be covered in the warranty?