RV Repair: Suburban Rv Furnace, lazy daze, furnace

Question
the Fan is not turning on when the thermostat is turned on. Where do I start. Its an 83 Lazy Daze. 22ft. the furnace is mounted in the wall down low to the floor but not ducted under the floor.

Answer
Jason,
I will need a little more info from you to help. Need make and model of furnace.The first thing to check would be 12v power.If you have power then jump the two wires on the thermostat together and give the furnace about 30 seconds to start the blower if that does not work.get the furnace info so I know what you are working with.

Thanks, Chad
Truline RV