Atwood hot water tank

[Yakherder]

I'm on the road travelling across the US and Canada heading to Nova Scotia. My Atwood Hot Water Tank is acting up on me.

I can run the tank on Electric without any problem when at a campground but when I have it on gas it will work properly for a few hours and then quit. The tanks are full or close to it so it is not a gas supply.

Does anyone know what this type of problem is.

[007matman]

My vote would be the Thermocouple. Those are inexpensive and usually readily available. I'd try that first.

Otherwise, the circuit board.