My Rachio 3 is stuck on the first section and flashes a solid red? I’ve unplugged the power and waited 30 seconds but nothing has changed?
Looking at the following page, you should be able to diagnose it.
Are you saying that the first section is solid red or flashing red? Or are you saying the first LED pulses red? Sorry, I am a little unsure which you are saying.
Were you able to figure this out? I’m having the same issue.