If it was a standard furnace (read home unit) I would say your problem is a
thermocouple failure. If your furnace has a "pilot", it is a good chance
that you have the same problem.  Look for a 3/16 diameter (approx.) device
that is in the path of the pilot flame.  The pilot heats this unit.

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Gerald Masar
Sent: Thursday, April 27, 2006 1:34 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Trumatic gas furnace problem

Does anyone else have one of these? Mine is the Trumatic-e 1800 and came out
of my '88 Westy, where it was installed by the PO who brought it from
Germany. As far as I know, they were never sold in North America.
It has worked flawlessly for about a year and a half, but on a recent trip,
it either shuts down as soon as it ignites or will run for a few minutes and
then shut down. It is getting gas. I have two tanks on my '90 Westy and have
switched back and forth without effect.
Judging from the solid red light when it shuts down (rather than
fast-flashing light which indicates low voltage) and what little info there
is in the owners manual, it could be a very dirty fan. The furnace is more
than ten years old.
Before I remove the unit and take it apart, has anyone else BTDT?
Jerry