Program continues to cycle, won't stop after running through all zones
I've got a Richdel 508 controller. It has worked fine for a few months, until a couple months ago. For some reason, a program will simply repeat after running through all of the zones until I manually interrupt the program using the "Clear/Rain" button.
I've resorted to running in only semi-auto mode since. That is, I can set all of the zones and their durations properly, and it will successfully run through all zones. At the end of running through the 6 zones (the other 2 are switched to OFF), the program will stop running and water will stop, just as it should.
What would cause the program to go on repeat? I would have expected that the semi-auto feature would result in the same repeat cycle but I haven't had an issue