Just tried my air con for the first time (Only had the car 6 weeks) With the air con button lit and on Blue (Cold) on the dial and on number 3 (4 does nothing btw) air is not cold at all. Any ideas? When I bought the car I tested the air con and it worked fine. Number 4 with the aircon buttin lit theres no noise at all, Will only go up to three. Anyone have any ideas?