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
Ok, I figured out what the brown wire is. Here'a a picture on the other side of the furnace housing..
So the 12V dc power is a black wire which goes from the main fuse panel, and connects to that red wire shown in the above pic. That red wire goes to the furnace circuit breaker (it's the top red wire on the breaker, shown in my earlier pic). I can also see that both blue wires (coming from the furnace circuit breaker and the furnace relay) connect to the smaller red and white wires inside that brown wire. So basically, the small red & white wires at the thermostat are the blues coming from the furnace.
Yes, and I'm getting 0V at those connections, regardless of what the tstat is set to (on/off/fan/auto/manual).
Edited: The black wire is 12V dc power, not shore power.
So the 12V dc power is a black wire which goes from the main fuse panel, and connects to that red wire shown in the above pic. That red wire goes to the furnace circuit breaker (it's the top red wire on the breaker, shown in my earlier pic). I can also see that both blue wires (coming from the furnace circuit breaker and the furnace relay) connect to the smaller red and white wires inside that brown wire. So basically, the small red & white wires at the thermostat are the blues coming from the furnace.
BFL13 wrote:
Did you put your voltmeter on the AC control box shown in that photo for any 12v there? With and without the tstat control to "on" for that? Those terminals look easy to get the meter probes on, unlike at that tstat circuit board without doing any harm touching the wrong thing.
Yes, and I'm getting 0V at those connections, regardless of what the tstat is set to (on/off/fan/auto/manual).
Edited: The black wire is 12V dc power, not shore power.
