SOLVED: No power getting to the thermostat
SOLVED: It was a short somewhere between the blue wires at the furnace and the tstat. Refer to this post Hi All, 1997 Terry 30g RV with an Atwood 8531-III DCLP furnace and a Coleman 7300 air con...
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Your best bet may be to head down, through the floor and back up into the furnace. Consider cutting a hole in the wall just above the floor and then cover it with a mud ring and blank cover plate. By putting this near the floor, you can angle a drill down through or drill up from the bottom and use hole to allow you to feed the wire. This assumes you can drop a loose wire down all the way from the t-stat hole without framing in the way.
