Smart Schedule running amok!

Recently installed my sprinkler controller, all is working fine until today when I activated the “smart schedule”. I selected to start 4:30 am and end by midnight, along with the cycling option. It immediately came on, so I figured I did something wrong, deleted the schedule and did it again. Same result. I left for an hour thinking maybe it just needed to have a starting point…when I came back it was still running through the zones.
Any thoughts on what could be causing this? (it is the middle of the day btw)