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[OldWEB]

I have read "most" of the manual for the Onan EC-30 and from what I understand it is used exclusively to start/stop the generator when:
1) There is no AC shore power; AND
2) The thermostat is calling for A/C (or I suppose heat?) OR the batteries require a charge.


It is not designed to automatically start if the shore power goes off without either of #2 above requesting it. It is only a safety feature to keep the left behind pets (or maybe grandma?) inside from baking. This is how I read the manual.
So for you 'needing' the 12VDC sensing voltage on the shore side of the ATS is wrong. If anywhere in the coach there is a loss of AC, then the EC-30 should start the generator as you can assume the shore cable is not supplying power.
Am I wrong in this assumption I read from the manual?
Good luck.