I have Honda Accord 2002 SE. Today my a/c was blowing not as cold as it used to be, so I checked refrigerant level. It was high in red and I decided to discharge it pushing on the high end port. Somehow I emptied it down to zero pressure, so I filled it again with refrigerant to normal pressure for this weather...And this made it worse, ac started to blow heat! (sounds like magic, but true) Eventually, it gets back to outside temperature and gauge reads zero again.
So why when my car has refrigerant it blows hot air? Did I break the physics of the universe?!