I had the team do some testing with the zone and master valve fault notification and it seems to be working correctly. A simple test is to put a wire between the zone and common, or master and common, and then run a schedule through the app or just use the buttons on the controller. You should see the controller power cycle and then receive a email and push notification. I can’t really explain the false positive you received earlier. Could be a power surge or something similar.
If you see other odd behavior please just let us know and we can investigate further.