All you Atwood water heater gurus - had a second occurrence of a strange issue this morning and would like to have some feedback on my troubleshooting thoughts. I am running on electric full time and the water was on.
Took the dog out early this morning and found the water heater with hot water running out of the pressure relief valve and I could hear the hissing sound like the electric element was heating.
This happened once before about 6 months ago but I was not there when it happened. The water supply was off that time and the element eventually burned out.
This time when I turned off the water heater I did see the red light on. Ran some hot water out and then turned the heater back on to see what it would do. Seemed to work normally - took my shower and everything seemed OK. Went ahead and turned it off again while I am at work but will troubleshoot later.
The troubleshooting before pointed toward the tstat not being in good contact with the tank. My question now is - does it seem possible that there were contact problems with both the tstat and the ECO so that the system continued heating? I also thought about the 120V relay for the element but if that stuck it would not have stopped when I turned off the water heater.
Anyway - your thoughts are welcome as I begin my investigation later today.
Terry
