Thank you Metalman, turns out didn't need to contact anyone other than the forum. We had tried the suggestion given Boater2 which did not work yesterday. Because we were leaving the campground for home this morning, tried suggestion again, still didn't work. (BTW levelers were in up position)Drove home, tried once again.....lo and behold error message cleared. Must be the gremlins at work.
Anyway, want to thank everyone for their suggestions.
Will be attending a GEAR rally next couple of weeks, plan to talk with Thor service representatives about what happened, maybe they can shed some light why the problem occurred and then resolved itself after using suggestions.