Does it run the fan but not light, or not do anything? If it does not light, are you sure you are getting propane to the furnace? On my trailer, after sitting for a while, it seems to get air in the propane line, and the furnace may time out before it lights. However, if I have used the stove, or had the refrigerator running on propane, that bleeds the air out of the line. Possibly that is your issue, and when on battery your refrigerator has bled out the line. When my RV has been sitting, I go inside, light the stove, which may take a minute, then use other propane powered appliances. And I have leak checked the line a couple times, cannot find anything leaking. My last RV did the same thing.
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Doug L
Shiawassee County, Michigan
Shadow Cruiser 263RLS
2018 Chevy Silverado 1500 with 5.3 Max Tow package
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