Need more info Michael. Is the burner staying on when on gas? What about your switch over valve for winterizing? Is it in the right position? I have a 10 gallon hot water heater and we never run out of hot water.
when was the last time u flushed the water heater?? just a guess ,, u might have enough sediment in the tank that u can't get the full hot water out of it ,, but i kinda have to agree with Ken ,, how many valves do u have on the water heater to bypass for winterizing ,, on mine i have 2 ,, most have 3 ,, but JMO
Found the problem. So simple, never gave it a thought. There are two thermostats located on the front side of the water heater. They are about the size of a quarter. They come in pairs. Info came from the technical service guys at Atwood. Thanks to all who offered their help.
Glad you figured it out and are up and running, but I gotta ask, your first post said: "Problem is hot water only lasts for less than one minute." Since it was a thermostat, how did you have any hot water at all? I never thought of them, since it sounded like you had hot water.....Just wondering....