Truma users/waterheater

Our newer 2351D has the new Truma heater/water heater, and to this point we love it. Now at our final fall trip a strange thing happened. I have the Trumas set to heat/furnance with the water heater off. But we are getting hot water. What's up. Any thoughts?

I just got hold of the Truma service in Elkhart and they put my mind at ease. A simple answer I should have thought out. The furnace works off the hot water and blows the heated air. When I turn on the faucet I get hot water because the furnace heats it. So when the furnace is on, so is the water heater, thus hot water. The water setting is for when you want hot water and not the furnace. Sure wish my salesman would have had a clue about this unit instead of having me figure it out blindly.
Result: Problem solved!

Garmp, glade you figured it out. The factory should have been more helpful.

I have a truma hot water heater and am totally lost on the connection to the furnace mentioned above.  In my unit they have nothing to do with each other. 

Truma has a whole line of products. Our unit is the Truma Combi. That is a combination of water heater and furnace. Your RV might have the water heater only. Which I know nothing about except by reputation, which is highly thought of.

Thanks GARMP…now I wish I’d looked into that.   Appreciate the edumucation.