This little post may address a problem that has been lingering in past posts.
It pertains to an erroneous reading of the LP (Propane) tank on the indicator panel inside the RV.
I have been plagued with this problem for some time and think I found the problem.
My LED indicator showed "Full" at all times for some time now. The first thing I did was wiggle on the wires on the tank sender (see pix below). That did not seem to fix it. My next step was to do a thorough cleaning job of the contacts, using a scraper (knife) on both sides of the contacts on the sending unit. A few rapid movements of the connector, on -off-, several times, cleared the problem. An application of some sort of chemical (de-oxid) probably will help too.
The terminals involved are subject to a lot of road grime etc. and after a few years they become very oxidized.
To check yours, when the terminals are disconnected, the LED indicator will read "Full". As the tank empties, the resistance, ohms, in the sensor will decrease and, hopefully, will start to indicate the proper volume of LPG in your tank.
carson FL