I took the furnace out at Pokagon state park. Confirmed that the motor is solid and works, and both switches are just fine. Visited the factory and they "helped" me obtain a brand new furnace ! Awesome folks at Surveyor factory 37 for sure ! They bend backwards to keep their customers happy ! Since I had the old furnace out, I took it to one of the RV surplus places in Goshen/Elkhart and at one of the stores an elderly gentleman took out his dinosaur circuit tester thingie and spent time checking the circuit board from my old furnace.
The diagnostics failed, and he tested one of his own (I guess old, pull out boards) and it worked. He allowed me to temporarily install it with the condition that if it tested bad after the test I had just purchased it, which I agreed. Of course the furnace roared to life with the new replacement board in. I installed it and tested it and it works just fine now.
Of course after having paid for a brand new furnace, I brought it back home with me too. I feel like I cheated the factory but that was not the intention for sure. They tried to help me the only way they could, they are not a repair facility for sure.
it was my curiosity to find out what had gone wrong which lead to the old furnace being repaired. And BTW, it was a real bear to take it out and to reinstall it.
But the furnace works now
Just an update to all who contributed to the thread !