Scoozemee but "auto run on propane" selects exclusively LPG?
Every old reefer of mine when set on "Auto" defaulted to AC when present. If the "Otto" control is faulty it might, not be "otto" switching to LPG. If the LPG burner ignites and stays on but over a period of 12 hours does nothing then there is a mechanical not control problem?
Issue # 131 with my former ownership of LPG appliances.
If the burner does not light it is perhaps a control problem. Or that pesky "ultra-lightweight LPG Bottle Syndrome"
