I have a Dometic RM-23a that is original to my 1973 Hunter Compact-II, In condition, it almost looks like it just came out of the box.
Here's the problem: It works fine on 120VAC, goes right down to freezing. However, it does not like keeping the LP flame on, even for a few seconds.
I have taken everything apart and checked out everything with the Dometic troubleshooting manual and everything works fine. If I put the burner in, without it's outside shroud, it lights
off and the flame safety locks in just fine. It will stay lit for hours like that.
As soon as I put the metal box around the burner all it will do is POP when lighting
is attempted. The flue is clear, albeit a bit rusty inside. I'm almost thinking that there is a manufacturing or an installation problem and that it was just never used on gas.
I am tempted to drill a few more vent holes in the side of the burner chamber to let more air in. Any thoughts??