JimK-NY wrote:
This time, I used the stove and furnace and then shut the valves. I expected to see a green indicator on the regulator for many hours. Instead it changed to red in well under 2 hours.
I missed this part where I believe you are saying you are shutting off the tank valves and the system is leaking down pressure. I was assuming you were saying you were losing 20 pounds of propane over a few hours and not able to smell anything. That would be a huge leak.
Maybe try buying a brass plug at Home Depot and remove and plug the line from the trailer to the regulator. This will let you see if the regulator alone is leaking down.
What about the oven? Did you soapy water that valve? Maybe the pilot is leaking.