[VAC] Furnace?

[Inlandrv@xxxxxxx]

Jeff and Daile. The problem could be what "LPG" your using. You could have a
different chemical composition in the large tank, from standard LPG in that
it may not be burning as hot as the twin tank supply, of LPG. A mix of Butane
and Propane will not burn as hot.
The fan cycling simply says that the combustion chamber is still hot enough
to make the "fan" switch engage. A new fan switch would solve that problem.

Andy
inlandrv.com
airstreamparts.com