Last year, I used a 16 zone/2nd generation controller without any issue and it was great. When winter rolled around, I had my sprinkler system flushed/turned off (winterized) by a professional service. During this time, I left my controller in stand-by mode.
Unfortunately, when the water was turned back on in the spring the controller did not function correctly. It appears that only 1 zone comes on regardless of the zone I enable either manually or through a schedule.
I have no idea how to troubleshoot this issue. My initial reaction was to factory reset the unit, which I haven't done yet, and was curious if anyone had experienced a similar issue?
Thanks for your time and any advice.