FWIW, we had a customer that had a furnace doing the same thing. Crazy but after a few tests we disconnected the gas line and found styrofoam in the LP system. How it ended up at the furnace was a mystery as all other gas appliances worked great.
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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