That's a real shame apom. It's obviously the aircon fan malfunctioning. It would probably be safe to drive it with the aircon off if the radiator fan etc is working; but what you've arranged is better still.
I know with my ex Accord Euro the aircon function would bring on another hum/fan when the car was idle.
I don't use aircon much; even in the hotter weather.
Let's hope your engine is fine; and I'm sure it will be.