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Electric water heater problems

Posted on 12/17/16 at 10:23 pm
Posted by ThirstyTigerLSU
Baton Rouge
Member since Mar 2009
88 posts
Posted on 12/17/16 at 10:23 pm
Hey everyone, I am having problems with my 5 year old State Select 50 gallon electric water heater.

It has been shorting out and turning off every other day, to multiple times a day. I usually can tell before it happens because the hot water becomes scalding hot out of nowhere. I've tried turning the temperature down but to no avail.

I'm not very technical and am unfamiliar with how they work. Any ideas, advice and suggestions are welcomed!
Posted by weadjust
Member since Aug 2012
15092 posts
Posted on 12/17/16 at 10:25 pm to
You got a multi-meter?
Posted by momentoftruth87
Member since Oct 2013
71421 posts
Posted on 12/17/16 at 10:30 pm to
Have you tried the reset button? Probably behind a panel you have to screw off.

Might need a new one usually 5-10 years is the life of a hot water heater.
Posted by Napoleon
Kenna
Member since Dec 2007
69065 posts
Posted on 12/17/16 at 10:32 pm to
Is an element grounded? It's rare, but instead of shorting open, then can short to ground and stay on constantly. Usually that would trip the breaker, but it can happen.

Electric water heaters are really simple. Not much to them.

You really need a multimeter or at the minimum a continuity tester.

Posted by airfernando
Member since Oct 2015
15248 posts
Posted on 12/17/16 at 10:35 pm to
Do you know it's shorting out or is that an assumption? Most people who say shorting are actually wrong.

What do you mean by "turning off"? Is the the display going blank? Is it tripping a breaker? If it's truly shorting, it will certainly blow a fuse or trip a breaker.

The first thing you should do is completely flip the related breaker to off and then back on. Many electrical problems relating to appliances that draw a lot of current can be traced back to partially tripped breakers. Please heed this advice. I've dealt with partially tripped breakers with my dryer, stove range, and water heater, each separately.
Posted by ThirstyTigerLSU
Baton Rouge
Member since Mar 2009
88 posts
Posted on 12/17/16 at 10:37 pm to
I do not have a multimeter. (Had to Google what it was)

when it shorts out I have to go in the attic and unscrew the top panel to press the reset button. Upon doing this it comes right back on every time.

I also never have to mess with my house circuit breaker box.
Posted by Spankum
Miss-sippi
Member since Jan 2007
56004 posts
Posted on 12/17/16 at 10:41 pm to
sounds to me like you have a thermostat going bad...I think there is one on each element of a water heater, so I would change that element.

fwiw, when you take that cover off to push the reset button, be careful, as there is some bare 220V terminals in there that will knock your dick off.
Posted by ThirstyTigerLSU
Baton Rouge
Member since Mar 2009
88 posts
Posted on 12/17/16 at 10:49 pm to
quote:

Do you know it's shorting out or is that an assumption? Most people who say shorting are actually wrong. 

What do you mean by "turning off"? Is the the display going blank? Is it tripping a breaker? If it's truly shorting, it will certainly blow a fuse or trip a breaker.


To be honest I'm not really sure, I just assumed. But I do know that my water scolds then later on is not even warm. Although this isn't the case every time it goes out.

The circuit breaker box in my garage is never tripped, but the reset button inside the top panel of the heater is.
Also, no dick to knock off and I really appreciate all the advice.
Posted by ThirstyTigerLSU
Baton Rouge
Member since Mar 2009
88 posts
Posted on 12/17/16 at 11:00 pm to
quote:

I think there is one on each element of a water heater, so I would change that element.


Yes there are two. How will I know which is bad or if that is the problem? A multimeter?
Posted by Spankum
Miss-sippi
Member since Jan 2007
56004 posts
Posted on 12/17/16 at 11:01 pm to
quote:

Yes there are two. How will I know which is bad or if that is the problem? A multimeter?


I think there is a reset button and thermostat on each element, if I remember right...I would suspect the one that you keep having to reset.
Posted by Napoleon
Kenna
Member since Dec 2007
69065 posts
Posted on 12/17/16 at 11:05 pm to
Hate to say it, if you don't have a multimeter the only way you can fix is to be a "parts changing monkey" and just change parts and hope it fixes it. A multi-meter like a power drill or a hammer is a tool that any man should own. Especially with increasingly electric machinery.

You check the continuity of the elements (power off) if they have continuity they are good, if not they are bad. Be sure to check for continuity between each terminal and ground.

It's going to be an element or the thermostat control. There isn't much else.

A water heater is only junk when it rusts out, other than that it should always be repaired.
Posted by weadjust
Member since Aug 2012
15092 posts
Posted on 12/17/16 at 11:06 pm to
Never mind. I read that you do have a multimeter.

Youtube link on how to test a water heater element using your multimeter.

LINK
This post was edited on 12/17/16 at 11:08 pm
Posted by Roman Candle Tag
Member since Mar 2016
1450 posts
Posted on 12/17/16 at 11:06 pm to
quote:

Also, no dick to knock off and I really appreciate all the advice.


So, pics?

Anyway, elements can be tested by disconnecting the two leads, retightening the terminals, then testing continuity/resistance across those two terminals.
Posted by ThirstyTigerLSU
Baton Rouge
Member since Mar 2009
88 posts
Posted on 12/17/16 at 11:15 pm to
Wow, you guys are great! This has me at least going in the right direction. I knew I could trust the OT to deliver.

Posted by Roman Candle Tag
Member since Mar 2016
1450 posts
Posted on 12/17/16 at 11:15 pm to
Also, if your water temp fluctuates that much, I suspect your lower element or t-stat. The lower element is what heats most of the tank. The top element can't keep up with demand if the lower element is INOP.

Seconding Napoleon's advice: Test with POWER OFF, unless you know what you are doing.
Posted by ThirstyTigerLSU
Baton Rouge
Member since Mar 2009
88 posts
Posted on 12/17/16 at 11:21 pm to
Thanks, that advice will be taken!
Posted by Tigerpaw123
Louisiana
Member since Mar 2007
17257 posts
Posted on 12/17/16 at 11:28 pm to
Chances are it is either the element or the thermostat, Both parts you should be able to pick up at lowes or HD, bring the model number in with you, both are fairly simple to replace and cheap. Instead of going through the trouble of diagnosing the problem, just change both parts out, if it does not fix the issue then you need an electrician
This post was edited on 12/17/16 at 11:39 pm
Posted by Napoleon
Kenna
Member since Dec 2007
69065 posts
Posted on 12/17/16 at 11:35 pm to
this, on most the lower does work a lot harder than the upper.

FWIW the parts cost on changing both is still less than a service fee.

This post was edited on 12/17/16 at 11:36 pm
Posted by Spankum
Miss-sippi
Member since Jan 2007
56004 posts
Posted on 12/17/16 at 11:56 pm to
quote:

Also, no dick to knock off


sorry for the assumption!
Posted by BHM
Member since Jun 2012
3147 posts
Posted on 12/18/16 at 12:03 am to
No offense to the OP but this sounds like a job you need to outsource.

If you do attempt the element replacement,

1. Turn off the breakers or unplug the water heater if it has a plug.

2. Turn off the water supply.

3. Drain the water heater.

4. You will need a special wrench to remove the element.

5. Take pictures of wiring before removing.

6. Fill with water before turning power back on.

7. If in doubt, seek professional help.
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