Thermostat Inop After Disconnecting Furnace
Hello, After removing my Suburban furnace, the RVComfortHP thermostat does not energize. This means the A/C does not work. The wiring plug to the furnace is now disconnected. Perhaps the therm...
Forum Discussion
Yes. The roof AC tstat sometimes gets its 12 volt power from the connected furnace. You have a 12 volt positive input to the furnace and you then have 0ne of the BLUE tstat wires from the Furnace that is HOT (12 volts) that goes to the wall tstat and THAT wire supplies power to the Wall tstat and roof AC system. You have 2 blue wires. jump the 12 volt to one of the blue and see if you have power. If not, jump the other blue wire. Do NOT have BOTH blue wires connected. Doug
