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...
Forum Discussion
dougrainer wrote:
Your original tstat wall pic shows a large 14 gauge RED wire connected to a small 20 gauge red wire with a wire nut inside the wall hole. THAT wire should have 12 volts pos. Doug
So I removed the wire nut that joins the red wires at the tstat. I put the positive probe of my multimeter on the smaller red wire (coming from the furnace) and I connected the black probe to one of the screws that holds the thermostat mounting bracket onto the wall. I get 0V. Am I doing that right? Sorry, I'm very new at troubleshooting electrical stuff.
If my test is correct, then I suppose that means the wiring is bad somewhere between the furnace (where the 2 blues are connected to red & white inside the brown wire) and the tstat. Again, I get 13V at the blue wire connected to the furnace circuit breaker.
