My air conditioner was not keeping the car cool. Ricky said they could not find anything wrong with it. Then he asked me if I pressed the Max button and the button with the circular arrow when I want air conditioning. I said no just the ac button. He told me that those other 2 buttons also need to be pressed for the cold air to circulate. Now the car is cool as a cucumber since I know to press those buttons. Thanks Ricky for useful information!