NFranzen
Well-known member
My camper has a SF-20 furnace in it. It seems it does not recognize the thermostat. The thermostat is only a couple years old and has worked fine, but whenever I power up the camper the furnace comes on and runs even if I have it set to off on the thermostat. When I turn the gas on then it starts to heat even when set to off. At the thermostat there is just a white and red wire, and I can see where those are hooked up to 2 wires. How would I go about troubleshooting this or can anyone point me into a direction to start looking? Any help would be appreciated, we are going out in a couple weeks and I would like to have this working instead of just adding in a on/off kill switch to band aid it, I'd like to fix it right.
Thanks,
Neal
Thanks,
Neal