Is the Webasto wired such that the fuel pump and igniter will not run if the circulating pump does not run?
Or is it that if the burner is running and you don't feel heat at the register then look at the circulation pump?

Does the Webasto heat engine coolant directly, or through a heat exchanger, or does it heat a closed loop of its own?

Does full engine coolant ensure a full Webasto circuit, or must you check Webasto system water? If so where?

Will the Webasto fire up if the water is low, or empty? Do you need to worry about a possible meltdown in a dry system situation?

If you are running along and the engine is at opp heat, can you get heat out of the Webasto using it's fan and thermostat without burning fuel in the unit?
What I mean is does the engine heat the Webasto system in the same way the Webasto heats the engine?



These are theoretical questions of operation and safety

JIM