Runs thru zones 1-10, and then for some reason starts over and does 1-10 again! And then it stops. Only one start time is set. Only one program is active. Program is simple, goes off reliably at the correct time on the correct days. This is a vintage 2000 or so controller, quite simple, for example there is no do-it-twice-on-purpose soak-in feature that I can see. I'd be less confused if it cycled continuously, or not at all, or opened some zone valves but not others and so on, but it works perfectly except it runs the program exactly TWICE. Any ideas?
