Hemimedic37
Member
So it's November we're camping in Maryland. The temps overnight are in the 30-40s. We turned on the furnace for the first time since we've had the 370FB. The furnace ran fine for the first 10-12 hours. Woke up to a cold camper and the display on the thermostat is blank. I checked all breakers and fuses and found the 3amp fuse on the back of the thermostat blown. Moved the 3amp from a different thermostat, display is lit. Turn it to heat and about 3 seconds later it's blown again. Replace it again. I'm thinking a wire is shorted, where does the white wire go from the thermostat? Down to furnace or some where else?