I used to have trouble with spider webs in the gas line clogging the orifice at the fridge. Take off the orifice and blow compressed air through the hole in the opposite direction and also through the line. (Obviously disconnect from the regulator first) Seemed strange that spiders could live in propane, but it happened. Is there a thermocouple that regulates the gas at the fridge. Could it be bad? Replaced a number of those as well. My biggest problem was getting the darn thing level so it would work properly. Propane refridgerators get pretty finicky about how level they need to be.