PLEASE HELP WITH FAN BLOWER

[Zuraxus]

I came from worm work, parked my car in the garage , turned the key to off position and I noticed that my fan blower from the climate control is still blowing the air even if the car was off and key removed, dosplay off as well. So I sterted the car again and noticed that even if I tried to manualy change the fan's rpm to lower setting or shut off the whole system, I couldn't, the fan was still going and going until now. Opened the hood, removed the cabin filter hoping I can find anything, but nothing. My last thing I want to due is disconnect the battery in the trunk try to reset the system, but I'm affraid to do it, I don't want to mest any thing up by duing that. This forum and u guys are are last hope before I'll turn to the stealer for help. thank you.