My Whirlpool dryer constantly turns on all by itself and continually beeps, changing screens until I unplug it. I've left it unplugged for a few days even, but still happens. The touchscreen also needs calibrating at least once a month. It's done this for the past 2yrs, very frustrating! I'm guessing it's 10-12+ years old as I bought second hand.
What would cause these issues?
Thank in advance!

MoD# WED7990XG0