Ok, so i looked over the manual and didn't really find anything so Im hopin you guys could help me out. Whenever I have my air off and the *air circulation* buttion on ( the one under the *off* button ), everything is fine. However, if I have the air off and that button off, whenever my car is in motion hot air comes through the vents. Anyoneone else gettin this? And if so, is it normal?