The reason I speculate that it might me an inverter/transfer switch issue (transfer switch is internal part of inverter/charger) is because it trips every time the 110 source is changed. Plug in to shore power it trips, Start engine, it trips, start generator, it trips. Sometimes when it trips while using the inverter, it can't be reset until hooked up to shore power. After the dealer called and told me it was fixed, it tripped on the way home (seven miles). Then when I plugged in to shore power I lost all 110 inside the coach. Unplug from shore power, inverter kicks in and I have 110. Plug in again, no power inside coach. EMS panel shows 110 getting to inverter, but no 110 coming out. Sounds like transfer switch to me, but I am definitely not an expert.
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