first, on the thermostat make sure the fan is set to auto. then if you want to run the furnace, make sure you turn on the propane and bleed the lines by operating your stove top first. This will ensure you have all the air out of the propane line. then set your heat on the thermostat above the inside air temp by at least 5 degrees. to operate the AC, again leave fan setting to auto, but set cooling temperature at least 5 degrees below air temp and it should start the AC unit. Also you need to be hooked up to shore power to operate the AC unit. Hope that helps.
Jason & Wendy
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2015 Keystone Montana 3711FL
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