Question about Water Heaters

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I noticed my water wasn't staying hot long to shower and wash dishes. The water continually runs out of the relief valve to the outside of house. Had to shut-off water to unit and turn off breaker. What could be causing this?

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Sorry to read about your problem, I hope this helps you out.

most likely you have a defective relief valve, since you turned off a breaker, i will assume it is electric. water heater.

Their is a off chance, the the water heater is defective and getting to hot..but the thermal protection should kick in.

I tried to help you. Please help me and Rate/Vote on my response. We take the time to answer your question's. take the time to rate us.Thanks and good luck

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Posted on Jan 02, 2011

Testimonial: "thanks so much for the quick response. I sent in additional info but did not know how to ask you in particular. Thanks again!"

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1) Open link below for troubleshooting leaking water heater:
http://waterheatertimer.org/Leaking-water-heater.html

TP valve leaking is probably different cause than low amount of hot water.
The reason is TP valve releases pressure when tank is very HOT, not when tank is underheated.

Raise TP lever and lower back down to see if sediment is causing valve to stick open.
Next, replace TP valve and see if that clears up leaking problem.

2) Your electric water heater has some hot water.
That says electricity is working correctly.
Tank is not overheating, and ECO reset button is not tripped.
And it says upper element is working.
If upper element is not working, then tank has no hot water.
http://waterheatertimer.org/How-electric-water-heater-works.html

That leaves 3 suspects:
a) Upper or lower thermostat is bad: Solution, Replace both thermostats for $28. If problem persists, then replace lower element.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html
b) Lower element burned out
http://waterheatertimer.org/How-to-test-water-heater-element.html
http://waterheatertimer.org/How-to-replace-water-heater-element.html
c) Loose or shorted wire located between upper thermostat and lower part of tank.
Open tank panels and inspect for burned wire and loose screws, especially on lower element.
When finished, put insulation and covers back so thermostat not exposed to cooler air, which will cause overheated tank.

If you want to test parts before replacing anything, then take 30 minutes and do complete troubleshoot:
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html
Buy cheap multimeter at home center.
When testing continuity or elements, rotate multimeter dial to Ohms.
When testing for voltage,, rotate multimeter dial to 240-250-277 VAC

Add a comment for more free help.
Also take advantage of fixyas phone service.
For a price, fixya expert speaks with you over phone while you work on water heater.

Posted on Jan 02, 2011

Testimonial: "Thanks so much for your quick response. Will try the No. 2 solution as that sounds more like what is happening. "

  • Anonymous Jan 02, 2011

    And also sounds like No. 3 Solution. Appreciate your response.

  • Anonymous Jan 03, 2011

    Defective relief valve that runs all your hot water out of tank, can cause tank to have less hot water. So the problem could be relief valve.

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