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Looks like they only use flow sensor input to calc gallons used. Since nothing is hooked up probably sees max value on first reading and zero afterwards. That would explain one head using 380,000 gallons and all others 0.
Not a big deal, I just wish that app features worked like they should.
I’ve also found that automatic rain delay isn’t of much use. It relies on forecast and not actuals. Here in central TX we get a lot of rain predicted that never happens and it ends up skipping the sprinklers with no actual rain.
Again, easy enough to take care of but one more feature that isn’t quite right.
Overall I am happy with the controller and like the app for setup and control.