It does indeed work, cooling the Air to the temp selected. It's just that it goes into recirculation mode, with little effect. When this happens only a littlecold air comes out of the vents. I've tried recirculation mode and it doesn't blow how it's meant to.
I've done the flaps reset too and this hasn't really helped.
I'll get a scan done next week with my Indy. Thanks for your help, last poster.