I checked the voltage, we're good there. I also tried letting it sit a while and see if cooling down opened it up, no dice. I also tried running it as a heat pump thinking possibly it had a coolant lock and reversing the flow might unblock it. That didn't work either and we started to get a hot wire smell so it's off line except for the blower to help move air from the bedroom unit to the rest of the trailer.
We're in Lafayette LA now and last year Dometic / Duotherm was less than stellar on getting service in this area on the unit for failure to operate properly in the heat pump mode by switching over to the furnace. When we went to the factory for sevice last May they ended up swapping out this same unit. Now it's 11 months later and it's belly up. sigh. Here we go again.