Electric element and propane burner have same cooling ability on Absorption Fridges.
Electric element transfers it's heat thru direct contact
Propane flame transfers it's heat via a spiral baffle hanging inside flue
IF spiral baffle and/or flue are dirty, rusted up etc then the heat from propane flame can not transfer properly and just goes up the flue......result is less cooling due to less ammonia being boiled/turned to vapor in perk tube.
Same if burner is dirty..
You need to thoroughly clean burner, flue and baffle. (or pay RV Tech to have it done if you don;t know how)-----should e done yearly as part of fridge routine maintenance
