I had my aircon stop blowing cold air,Had the sensor replaced and regassed.All was fine for a while then it stopped blowing cold air again.Had it pressured up on the garages machine for leaks and had a sniffer test which never found any leaks, got it charged up again at the garage and all fine again for a few months then it stopped blowing cold again.Took it to ATS for a check and charge up if it passed to which it did so charged up again.A few months later it stopped working again so pulled the front bumper off and called in a air con specialist guy to come have a look. He found a leak in the condenser within 2 mins ! Seen it bubbling out in the top corner.Ordered a new condenser from euro car parts which for the life of me wouldn't line up unless i kinked the pipes so took it back and then got a genuine condenser from tps and it fitted ok.Took it back to ATS who charged it up again and its “fingers crossed” been fine and that was last autumn time.