I installed a flow meter at the end of last year and calibrated. For 5 months it seems to be working perfectly, no warnings ever. Suddenly last week I started getting warnings of 0.0 gpm flow on random zones (so far, 5 of 12 active zones). An average of roughly one of those warnings per watering cycle. When I test the zones manually they seem to work fine, and the valves are in different areas so a wiring issue seems unlikely.
Battery reports Good and signal strength Excellent. I’ll try bumping the pressure time from 2 minutes to 3 to see if that helps, but 2 minutes seems like long enough to pressurize from what I’ve seen, and 0.0 gpm seems odd. I’m not understanding why the sudden change.