Not RP and I just double checked. Was working fine for several days. I took the inverter out to check in my garage but then realized it had a "special" 120VAC plug so tested in back in-place plugged into the back of the electrical panel. All 120VAC power works when plugged into shore power.. no problem there. So here's two more pieces of information that may be relevant. 1)The fuse on the inverter... one 40 amp fuse was blown, the other 30 amp fuse was found laying on the ground next to the inverter. Did I knock the 30 amp one out? Possibly... you know how they throw these things together at the factory (workmanship is a four letter word to production!) Both fuses are supposed to be 40 amp. 2) It rained since all his started. Can I check the positive cable at the batter to ground and see if I get continuity? A possible short related to the rain? Trailer is less than a year old.