Trailer monitoring center

DSI = Direct Spark Ignition -this is what ignites the flame when the hot water heater is set to gas (LP). FLT = abbreviation for "Fault". Common to have the fault light come on when you turn on the HWH on gas until it ignites, then the fault light goes out. If it remains illuminated, the HWH did not light. You can use both electric element and gas to heat the water more quickly, but if the gas switch is off, and electric element is on, I can't speak as to why the fault light would be blinking on. ST

Thanks Tom, makes sense. My buddy see's his flashing when he is on electric not sure what is going on there but I will tell him what it means. He has never used the gas side, its a brand new trailer. Maybe he better just to make sure it works. It never stays on solid just flickers. Thanks again.

A google search turned up this:
"OK that means your hot water heater failed to start. It tried 3 times and locked out. Direct Spark Ignitor fault ( flt ) YOu probally 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 blead 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. Elec side should still work."