[terry and jo]

Well, it looks like I will once again get to learn from someone else's question. In our 2010, between the same two switches is DSI and the word "Fault" with the red light between them. When I looked up "rv hot water heater dsi fault" in a search engine, something came up indicating "Direct Spark Ignition."

I found this as an explanation on another forum:

"OK that means your hot water heater failed to start. It tried 3 times and locked out. Direct Spark Ignitor fault ( flt ) You probably have air in the line and it needs to be flushed out. I usually just run my stove top on 3 burners for a minute to bleed the air out. Just turn the water heater off for a minute or so and it should try again 3 more times till it lights. If not its gas side is broke. The electric side of the water heater should still work."

Thanks for asking this question because I had never seen that indicator light and wouldn't have known what it was unless I went to looking.

Terry