I have a 2009 civic without climate control, but I can choose a temperature. Since I bought the car it's worked a bit strangely if I'm honest. When I set it to 16 degrees it's not really that cold. Yesterday was really hot so I tried it out and if I'm honest the air was warm. If I set it to 28 the temperature goes right up in the air, so it does register the difference, but I can't get cold air. Any ideas?