That might be the best way to deal with it.
Monitor it carefully, as any kind of LP gas leak or CO build up can be dangerous and even fatal,
but you know that. It's probably just first use burn off, but just in case, maybe you could fire
up the appliances long before you turn in next trip. If the alarm sounds, shut down the appliances,
and get it checked asap.
If it were me, and the alarm tripped, I wouldn't take it to an RV place. I'd look for a local HVAC
shop that does gas fitting and installs furnaces for houses, and ask them if they could help you
diagnose a possible LP leak or CO problem with your RV furnace. They probably have handheld
CO detectors, and maybe even an LNG/LP detector that they could use to have a quick look.
Tell them you couldn't find an RV shop that had a tech that did furnace repairs. You just want to
know if it's really a false alarm.
Just a thought, if it keeps happening.
Another thought about testing the air inside the van when the appliances are on.
Do you have a plug in 120VAC CO detector in your house? If so, you could run an extension cord
to the van while the furnace is running, and set your house CO detector on the floor near the
front of the furnace? If it starts screaming about CO, you might have a legitimate problem.
I use one of these in my house, and if we get a trailer, I'll add it to our safety equipment.
http://www.google.com/webhp?complete=0# ... fd6bef6908
It's a 120V AC Kidde model KN-COEG-3 multi-mode detector. It detects CO as well as LNG/Methane
and/or Propane. It has a 9V battery backup. Not too expensive.