Originally Posted by gronotte
I have a 2010 Georgetown 378XL with duel A/C units and furnaces.
The bedroom theromstat controls the entire vent heating system throughout the coach and the bedroom AC, it works grea.t
The other thermostat located by the exit door controls the main cabin AC unit but when I put that thermostat on heater all i get is a click with no other action.
No fan or heat out of the two small vents at the side of the kitchen counter. That second furnace seems to be under the stove and only seems to vent out the two small vents on the side of the kitchen counter cabinet is not working at all no heat or fan, the main furnace under the fridge with all its associated venting works fine.
Seems odd that the bedroom thermostat controls all the main vent heating and the secondary furnace with thermostat in the main cabin controls the small furnace under the stove.Thx
The curbside heater furnishes heated air to all floor registers LR to bedroom. The driver side heater furnaces for burst heating in LR only, good for catching up. The heater follows the filling sequence: first the thermostat sends a relay sig to the heater to start. Blower must start and purge the furnace and flip a "sail switch". The igniter will begin clicking and the gas valve will open. Ignition and proving flame will allow heat. If control board does not receive sig from thermostat, none of the above can happen. Yours sounds like board or blower motor failed.