1991 Volvo 740 - air conditioning

[G.B.]

Hi everyone,

My a/c will not turn off. It is always on (unless I turn off the fan).
Everything else is fine. Any suggestions?

 

[Peter]

If its on demist / defog, then air con is on all the time.

Maybe that is it.

Only noticed the other day mine did the same when I turned the cotrol to
demist.

rgds

Peter