It worked fine for over a month. Today, zone 4 stopped working.
When I manually turn it on, the app on my android indicates it is on but it actually does not come on. After about 60 seconds or so, the app changes to off even though it ran about a minute of a 10 minute manual cycle (again, it never actually came on). When I do it in front of the iro, it flashes blue to indicate the iro has started the zone (it hasn't actually) but in moments flashes red (or amber?) twice or so and then goes off. The other zones stay flashing blue and work fine.
I see nothing wrong with the wire but removed it and then replaced it to be sure. I have unplugged the iro for 30 seconds and restarted to no avail. I removed the faceplate and checked for bent pins, there are none.