I assume that there are no sounds when you turn the furnace "on".
Loose wires? Use your voltmeter, check for 12 volt at the control board.
Thermostat switch off? Check for 12 volts at the thermostat.
Propane at furnace "off"?
Fan is obstructed by wasp nest inside burner chamber?
Fuse blown that still looks like it is still good? Check fuse continuity or substitute a different one.
I wish you good luck and happy trails ahead!
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