Gen 3 - One zone does not work

Replaced a rainbird with a Rachio 3rd gen. I have 6 zones total and all except zone 5 work. The Rachio light indicates zone 5 is on. No alarm/error lights

So far, I have tried the following without success:

  1. Power cycling the Rachio controller
  2. Moving the zone 5 wire into zone 7 and zone 8 terminals on the Rachio
  3. Testing voltage between zone terminal and the C terminal when the zone is turned on (Get 0.1V/0.2V for working zones and the non-working zone, very strange)
  4. Testing resistance between zone terminal and the C terminal. I get 32-38 ohms in all cases.

I tested all zones were working properly before I switched controllers. Sent an email to tech support 3 days ago but no response from them yet.

I’m at a loss at this point. Any suggestions?

@drawal,

Even though the zones were working before you switched controllers, don’t rule out the fact that the control valve for that zone could still be your problem. Here’s a link that you might find helpful:

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