OK back from the first camping episode of four nights away off grid.
We do not have that witness type double gauge. Sounds like a good idea though.
Everything worked except the silly furnace would leave the fan running forever if all you did was turn the heat way down. Only way to turn off the fan is turn the little lever on the thermostat to OFF. Then the fan quits after its proper delay.
So that means getting the place nice and warm before bedtime and turning it off. Back on in the morning. Not going to work if it gets really cold out, but ok for now.
On return home, having used some LP, and not having any battery charging (no alternator input with this rig) the batteries were at about 50% at 12.2, and the idiot light LP level monitor said three lights instead of four when we left, so that seemed to work. The gauge on the tank was also a bit lower than before.
Plugged in shore power at the house and now with 13.6 volts, the idiot light LP level went back to four lights--Full tank! Oh well. the outside gauge still works right.
The big tank has the level gauge on the left, then the open/ close tap, then a round thing covered with white plastic, then the Marshall regulator (also with a white plastic cover)
The round thing when un-covered is a grey shut- off valve looking thing, with the needle pointing along with the line, towards the open/close tap. Is this the auto shut off ??? The needle is raised a bit so it looks like you could turn it with your thumb to against the line flow, but why do that when there is the open /close tap right there beside it? So I am thinking this might be the safety auto shut off mentioned earlier in this thread ?
Thanks.