Reason for turning on burner is to use high volume flow to remove air from line. Fridge is very low flow and would take longer to purge air in lines. If unit has thermocouple make sure it is directly in flame and did not get bumped while winterizing. good luck
Good Luck and keep us posted please. "Q"
1999 Newmar, Mountain Aire 3768, V-10, CAI, Headers.
"Spending our kids inheritance one trip at a time"