Hi y'all...I'm new to this site and joined the forum as Holden and its dealers (surprise) have been unable to assist. I've transitioned from a VF2 to a ZB (why you may ask-another story) and in the VF2, the HVAC was sweet. I could set the dial to a certain temperature, push the aircon button to 'Off' (the Aircon LED light would go off) and the air would still be cool without (I think) the aircon being on, eg. say 21 and it would be 26 outside. If I did press the aircon button to on (the aircon LED would light up), I would hear the compressor starting up and the air would be even cooler. With the ZB, this no longer happens. If you want cool air, you now always need to have aircon on. It will simply not blow cool air without the aircon on. My question is what was the difference between the VF2 and ZB HVAC systems that the above happens? I loved the VF2 HVAC, I would get cool air without having to turn the aircon on, regardless of the temperature outside. Question to Holden ("we're not mechanics here, call a dealer) and to dealers ("sorry, the ZB is new/not built to Aussie conditions/we didn't build it/too new for us to know/not trained yet etc. etc.) were not productive. Suttons City suggested I ask here. Any advice appreciated!