Help With 3 White Common Wires 2x Controllers

Troubleshooting Wiring
21

Nice setup :slight_smile: What is plugged into S1 and S2? Looks like a rain sensor, but it is installed wrong. For most input types S1 and 24- terminals should be used:

In any case, if you don’t plan to share the rain sensor, than you can simply connect the common from your second controller to the available C terminal on your 16 zone controller, no wire nut is needed.
If you do want to share rain sensor, you can either add a relay, or do this via IFTTT.

1 Like
22

Oh, S1 & S2 are an old rain sensor. I suppose with Gen3 I don’t really need that any longer and use the Weather feature.

23

thank you.