My Mini-8 has a Master Zone configured. My multimeter says Zone1 is always hot, at ~23v to common. I mean it's *ALWAYS* hot 24/7. If the thing is plugged in, then it's making (energizing) on Zone1.
Other zones are ~29v to common, and they make (energize) only when called. The Master Zone is configured in the app to (the default) of 0:00 minutes before and 0:00 minutes after other zones.
I thought the Master Zone would make (energize) only when some other zone is running, but I'm new to troubleshooting sprinklers. It feels like a defect. Is this normal?
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