[laceylady]

You are misunderstanding how the system works. Sounds like you my have had the same landscaper as I did, who was clueless and his instructions causedunder watering and graying and browning of our palms while on vacation. The bypass is for rain and has nothing to do with the 100%. Your system seems to be working exactly as it should. Call the installer of your system and have them come out and explain how it really works. They can turn of the 100% atmospheric sensor if you want. But this is meant to help you save water.