What battery do you have? If your battery capacity is not pretty full, the heater can run as you described. That’s one possibility, for that issue. Did everything else work on propane? Not sure about antenna. Mine does turn. SeeLevel. There are folks here who might have an idea about if the electrical is best searched from the control panel or senders.
My heater too, behaves just like yours apparently randomly. I don’t have it reliably fixed yet. Every time I test it, it works. The sail switch is notorious, but this behavior has not been a sail switch issue for me.
Finally, new trailer. With power disconnected, check your battery connections, all of the connections going into the electrical panel, and all of the connections in the panel. Several of us have found loose connections.
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Randy & Barb
1998 C 2500 (Cruncher) and 2021 Ranger (Yoda)
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