Keep Your Cool
So, let’s get back to basics. The two essentials an absorption refrigerator (the most common type) needs to operate are ignition and fuel. First, verify that your battery (or batteries) are sufficiently charged; a few months in a storage yard can drain it/them even if you’ve disconnected the cables. Then, after verifying that your LP-gas cylinder (or cylinders) have sufficient propane, turn the cylinder(s) on and go back inside the RV. Because the stove uses far more LP-gas than does the refrigerator, it’s a good place to purge the line of air and verify LP-gas flow. If the stove lights, then you can move on to switching on the refrigerator.