I spent some time today tracing wires. I found only one red wire coming from the Atwood furnace instead of the two blues. When I connect the 12v + (white/red) , red from furnace reset to white, the furnace runs without blowing the fuse. Now, however, after connecting the Y terminal wire on the A/C to the Y on thermostat, green to green for fan and blue 12v -, neither the A/C fan or compressor will run. I think I have a ground problem. Only other thing I can think of is that the A/C board is messed up now. Fuse and A/C breaker are good.
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