I have an 8 port Pro and have a 2 wire flow meter connected to sensor 1 port. The unit gives lots of random errors with flow reports when system is not watering. Sometimes it will say leak detected and 0 or 0.01 cubic metres of flow, sometimes it will say 100 cubic metres (or other large number).
I use cat5e twisted pair to connect the 2 wires from the meter and connect to the S1 and GND terminals. I have also tried with resistor between 5V as pullup (found on forum search as possible solution) but this did not work for me.
Issue is random as to what time it will occur but it is continuous as it occurs daily/or at least every second day.
Also tried disconnecting wires at rain machine (left flow meter selected on) and it does same thing, so maybe unit is faulty.
PS - should mention that when watering flow is always correct in operation and very accurate.
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