SOLVED: furnace and AC fan won't turn on
SOLVED: see my response below for details. In short, replacing the thermostat fuse fixed the issue. Hi All, I have a 1997 Terry 30g RV with an Atwood 8531-III DCLP furnace and a Coleman 7300 a...
Forum Discussion
Chris Bryant wrote:
OK- the blue wire is the thermostat wire, it will not have power unless the thermostat is getting power and calling for heat. You need to measure the red wire, and the power on both sides of the breaker in the furnace.
The black wire likely hooks to the furnace outside and the left (looking from the outside), and from there goes to the breaker.
Yes, mine looks just like that with 2 red wires and 1 blue wire going into the breaker. And further to the left (out of the picture) would be the furnace control board. I'll test all the connections at the thermal breaker to see what I get.
