Power must be removed completely from the unit for a minute or so to do a hard reset and never use that feature again. (behind the unit is a fuse or pull fuse in the panel, or use the battery disconnect and remove shore power)
Some earlier units had a software flaw that allowed this to happen.
Later units had this flaw fixed.
Lou, Laura, & Freya the wonder dog
2008 GMC Sierra 3000HD Crewcab SB Allison Duramax
2019 Flagstaff 8529FLS - Pullrite 3300
HAM CALLSIGN - KC3FFW