I am experiencing the same issue. I had to manually fill all my zones because during the colder days in January when the grass was still dormant my sprinkler system was still going off at least twice a week in Central Texas. Before I knew it I saturated my lawn and turned my neighbors into a marsh all while trying to water dormant grass in completely saturated soil. This goes against the ease of use that the Iro is marketed. It seems I spend more time fiddling with my Iro2 than my old manual system.
