Which side is on and off? It seems you can toggle it left, middle, and right?
Zooming in, it looks like somebody already wrote on and off with a pen. It shows that on is to the left.
jacobjm,
Adjust the thermostat up to 90 degrees. Assuming the temperature inside the coach is below that, and the furnace is working, moving the switch one way or the other should answer your question.
Bill
Note that when you turn the furnace on, and the set temperature is higher than the inside temperature, there will be a delay. Then, the fan will turn on, and another delay before the furnace flame starts. Then, when turning or cycling off, the flame will go out, but the fan will continue to run awhile.
Steve
"Note that when you turn the furnace on, and the set temperature is higher than the inside temperature, there will be a delay. Then, the fan will turn on, and another delay before the furnace flame starts."
Sorry, I didn't know that. Different on older models I guess? On mine, the fan comes on right away.
Bill