I just installed my IRO yesterday and it has been raining quite a bit here in San Diego County over the last two days. My lawn and other zones won’t need watering for several days at the earliest. Our drought rules allow me to water on Sunday, Tuesday, and Thursday only and the system scheduled irrigation on Sunday, which would be inappropriate. I had it on a PWS nearby but when I read about the potential issues with those I checked the data and it was incorrectly showing the rainfall totals. I then switched the PWS off and deleted all schedules and watering times to start over using the weather data from the non-PWS source. Again, the system shows watering starting tomorrow.
I initiated a manual rain delay and the app shows that watering will start on Tuesday. It would seem to me that when we have gotten significant rain and the weather is cloudy and cool the system should have aborted the Sunday watering automatically. Perhaps it would have but I set the weather delay manually because there was no advance indication that the watering would be cancelled.
Does the system determine in advance whether to water or does it do it at the time the schedule is about to start? If I were to cancel my manual rain delay would the system look at the weather over the last few days and cancel the watering anyway? How do I know?
I hope that makes sense…