I've had an issue with my climate control twice in the past month where the blower fans sound to be working as in I can hear them and the sound increases as the fan speed increases however there is no air flow coming from any vents. This has happened during long journeys over 50 miles. Everything was working fine at the start of the journey and I only notice when I start sweating because the cabin temperature has risen. Yesterday I had 100 miles of this fault driving back from Reading. The fault seems to rectify itself after the car has been turned off for an hour and cooled down. Has anyone else had this issue? My car is a 1.8tsi FR and is only 16 months old with 6500 miles on the clock so is under warranty.