hi guys. recently brought a 52 reg 172, with climate control, the actuel box works fyne no problems with box but it doesnt blow hot air or cold ait out if i turn it up or down, it has a built in sat nav to so i dont no wether any wires are conected or not, plus if i turn the system on a funny smell comes through like a dry burnt smell kinda thing, difficult to explain, when the systems off some cold air comes through to my feet thats it.:S. just wondering if anyones had the same issue or anyone could help me id be very very greatful,many thanks. Elliott