tank can be just over filled.......take the tank back off bang the base to the ground, this will reset the opd valve....reconnect the regulator and open the valve slowly.... this will cure the problem


if this is an onboard tank.....shut the gas off.....drop the coach off the levelers.....rock the coach side to side or pull forward or back with a quick stop......level up and turn the gas valve on slowly....opd will reset if the valve is opened slowly....if the tank is overfilled and the valve is opened quickly it will go into a lockout

I'm not sure how things are on tanks in motorhomes, but the newer valves in the cylinders for trailers are a lot more sensitive with regards to the safety valve.  If one opens the valve too fast, the safety will snap shut and then it will require sitting for some time for all the LP lines to equalize so that it will reopen.  Closing the valve again and letting it sit a bit will allow them to reset quicker.  Then open the valve very slowly to help prevent that safety valve from shutting off.

If none of that helps, then I would check to see if there is a thermocouple involved with the appliance.  That will be the case only if that appliance keeps a pilot light running, like a regular oven.  If there is no thermocouple at the appliance and it always lights electronically, then I would guess that the regulator would be the last thing to check.  Depending on the age of the RV, regulators are usually the last thing to go bad.  (With regards to the electronic ignition, if the igniter doesn't "fire" when operated, check the electrical connections at both ends of the wire.)

I used to haul and deliver LPG to farms and ranches back in the day, and while thermocouples were replaced every few years, I can only remember one occasion when I had to replace the regulator.  Now, with all that said, I have no idea of the quality of regulators these days.

Terry

I would also like to know how to hook up a second tank to the mounted tank on the RV or how to fill it up on site