I took out my 12-zone Hardie controller (which was working all the zones just fine) and installed the 16-zone Iro last night. The install went without any problems. When I tried testing the zones, none of them worked.
The blue activity light comes on when I turn the zone on manually form the (Android) app, like it should. The valves just don’t open. Could it be that there’s too much voltage drop with the 24V wall wart when a valve is on? There are three separate sets of valves with 3 commons. I “wire nutted” two together to a small jumper to get it into the second common connection.