I am assuming that the blower stopped? If it does will the blower run in the AC mode?
That might tell you if it is a problem with the blower or heat strip or the thermostat.
I am sure you relish the thought of bringing your rig to a RV dealer to fix it. They may have to test drive the rig after they fix it.
Maybe it would be better to call a guy who makes house calls.
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