If it has a bad electric heating element, I would not bother to fix it at all. The gas burner is about 50% more powerful than the 250 watt electric element, and will run the refrigerator much better than on electric.
When you get home, if you really want to spend $95 on parts and perhaps 2 hours shop labor time and risk damage to your refrigerator, then you can replace the heating element at a shop. Or try to pull it out yourself. Yet if the bad element has melted into the steel tubing that it is in, it might crack when trying to remove it, and destroy the $1,300 refrigerator. Something that you might not want to happen 2 days before your trip.
Run it on gas for a few weeks, it will not hurt anything. Then consider just leaving it on gas - it only takes about 1 gallon of propane every 3-6 days, depending on the outside air temp.
Fred.
