DiskDoctr wrote:
Remember the Red/Green shows the status of the tank the Select Lever is pointing to ;)
What he said. So in theory, if you do have one tank completely empty and you flip the selector from the full to the empty, it will stay green until you use some propane to purge the pressure down in the indicator.
Also the propane should keep flowing if both tank valves are open until both tanks are empty. :h
I don't know if that made sense or not. :R
My money is on the tanks having an auto change over valve and a selector on top of the change over to just indicate if you have pressure in the tank that you select with the indicator.