Auto/manaul climate...?

[Ferret]

i dont THINK my A/c comes on or tries to come on.I will check this weekend.If the a/c did come on it would surely clear the windscreen in a second.The A?C light definetly dont light up.My rear defrost goes off after about 10 minutes.it comes on automatically when you press the JATO button.
My emergency defrost blows a lot of air.When the fan spools up you can feel the air around your head,and after a couple of seconds the velocity of the air increases,and i figure this is due to some adjustment of the stepper motors.I dont think the fan speed increase at this point it sounds as tho the air is passing through narrower passages,or ALL the air is directed to the screen.If I close all other fascia and dash top vents,have the air dist set to manual,and turn the fan onto full manually it does not replicate the defrost setting.

Yeah, I've got the Auto climate control system and I think when you hit the emergency defrost button it puts the fan motor up to full speed on window vents only.... makes a hell of a noise doing it - you can hear it closing the vents sequentially which is why the force gradually increases.

EDIT: On manual dont forget a lot of the air pressure will be lost to under the seats and footwells...