Hello everyone,got an issue with my mum's ed falcon gli 6cyl.When selecting different settings on the climate control,only the demister works,you go through all of the settings and it stays on demist,has anyone had this happen before??
One thing i think it might be is the selector on the climate control that changes setting from say face and feet setting to demist,but the demister stays on all the time,even afther changing setting.
If anyone out their has any idea what might be wrong ,please post,thanks ..Scott,oh and happy easter everyone!

vacuum leak, check engine bay piping and behind the selector.

air blows to screen as a default.

check the little hoses that came out of the fire that go to the inlet mainfold its normally one of them tha cames off mine use to do it l exended it and it dont it no more its an pain in a**e to reach it also
good luck

are you testing it with the engine running? as krytox said the demist is the default setting