My girlfriends water heater goes cold as she runs a bath. (It used to give plenty of hot water for 2 baths.) Twice now as I opened up to get to the thermostats it decided to work and was OK for one bath. It's an old fashioned unit that is in a white porcelain cabinet in the kitchen so I can't leave it open for safety reasons.
When I did open it, the lower element was on (240AC and making the noise they make) and would switch on/off with the upper thermostat.
I'm guessing a bad thermostat (electrical connections are good), any idea which one?
What if one thermostat is off a bit? Can I turn one a hair higher than the other and if it doesn't work put it back and turn the other one a bit higher? Does that make any sense?
Now that I think of it, if the upper thermostat turns on while I'm bumping it as I'm opening it up, that is probably the bad one....?