Question about Rheem 80 GAL ELEC TALL Water Heater 6YR SC 82V802

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Rheem Hot Water Cylider Thermostat keeps tripping

I chnaged the element on my Rheem hot water cylinder because the element was shot, and the breaker was tripping all the time. The hot water was set to maximum on the thermostat so I turned it down to 65 degrees C, but noticed that every 3-4 days the reset button on the stat has to be pressed, so I guess it must be overheating ? The element was replaced like for like.

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  • james_osborn Mar 07, 2009

    No I didn't change anything oher than the element

  • Shadow1989 May 11, 2010

    did you change the thermostat and temperature controls too?

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Sounds like you have a faulty thermostat.  This is the unit that detects the water temperature, and if it is not where it is set, will kick the switch to allow electricity to flow to the elements you replaced. The thermostats are relatively cheap and if you have the knowledge to change the elements, changing these thermostats should not be a problem.

Posted on Mar 07, 2009

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I have a 50 gallon tank and i have to push the reset button after each shower and we also changed one of our eliments like 3 or 4 monthes ago and have and the same problem since then

Posted on Jan 16, 2010

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WhAT IS THE BOTTOM HEATEWR SET TO And also how much calcium is inside of the heater?

Posted on Mar 07, 2009

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Rheem 50 gallon Electric Water Heater 81V52D C repair ideas needed


It could be element shorted to ground through steel tank, so don't touch tank when breaker is ON.
Or you have undersized 12 gauge wire and 20 amp breaker and the heat has loosened breaker on the busbar. Breaker trips when heat exceeds breaker limit. Jiggle breaker and listen for crackling sound.

To restore hot water now:
Turn off circuit breaker, and open top cover then Push in reset button on top of heater to restore functionality. Put back insulation and factory cover.
To fix water heater: test and replace bad element.
http://waterheatertimer.org/How-to-test-water-heater-element.html
If problems continue
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html#trip-breaker
http://waterheatertimer.org/Troubleshoot-household-electricity.html

Sep 25, 2012 | Rheem 81V52D Water Heaters FOR 220 VOLTS

1 Answer

The water heater breaker keeps tripping and I have to reset it to get hot water. It continues to be a problem, what should I do?


Thermostat could be bad causing the breaker to trip due to it being shorted. It's either your breaker or the thermostat, more than likely the upper thermostat is bad.

Aug 15, 2011 | Rheem 50 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

I have a Rheem Marathon 105 gal. electric hot water heater. No hot water ....


Check 240 circuit breaker.
Open top cover on water heater and push in ECO red reset button.
If reset button will not reset, then replace thermostat.
If reset is not tripped out, then either upper thermostat is bad, upper element is bad, or water heater might be getting 120V instead of 240V.
If you have some hot water, then best suspect is lower element.
http://waterheatertimer.org/How-to-troubleshoot-electric-water-heater.html

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

May 26, 2011 | Rheem MR105245 Marathon Electric Water...

1 Answer

I don't have hot water suddenly. Please help me.


You posted under Rheem 81VP which is 6 gallon point of use electric water heater.
3 things can cause problems: Power going to water heater, thermostat with reset button, and 1500watt element.
Check that 120Volf circuit breaker is not tripped.
Open cover on side of tank and push in red reset button.

If reset button is not tripped out or will not reset, and water heater has power, then replace thermostat is best start point.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

Also test element, since elements burn out:
http://waterheatertimer.org/How-to-test-water-heater-element.html

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

May 19, 2011 | Rheem 81VP6S/430126 Water Heater

1 Answer

Hello, I have a Rheem 81V52D 50 gal. residential water heater. I had the upper element short out. I replaced both the upper & lower elements with the 4500 watt 230v. My problem now is that the upper...


It's probably bad upper or lower thermostat.
BUT... new element could also be shorted.
OR ... original tank is rated 1500 watt elements look at label on side of tank.
I always replace both thermostats to save time.
Lower thermostat costs $10 at Lowes.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Jan 16, 2011 | Rheem 50 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

No hot water


You posted under Rheem 40 gallon electric water heater, which is two-element 240Volt heater.
If this is not your heater, add a comment.

If you suddenly have no hot water, that narrows the suspect list.

Step1:
Check for tripped circuit breaker.
Open top cover on water heater and push in reset button on upper thermostat.
If reset button is tripped out, and will not push back in, then replace upper thermostat.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html
Put ear against tank and listen for bubbly-fizzing sound that says heater is ON.
If reset is not tripped, then move to step 2

Step 2: use tester or multi-meter and test across top two screws on upper thermostat for 240Volt.
If heater is not getting 240V, then test circuit breaker.
Move water heater wires from 240V breaker to another same-amp 240V breaker and see if that restores power.
You may need to replace breaker:
http://waterheatertimer.org/How-to-replace-circuit-breaker.html
If problem persists, then you might have a line problem between breaker and water heater.
Open cover on top of heater, and check connections on top of heater.

Step 3:
If heater is getting 240V, then upper thermostat or upper element is bad.
I suggest 30 minute troubleshooting which could save you a service call, and will be valuable information in the future:
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

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

Jan 08, 2011 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Replaced both lower and top elements and upper thermostat still no hot water. proper elec. going to unit.what could it be?


You need to take 1/2 hour to learn basics and then test water heater parts before replacing anything.
http://waterheatertimer.org/How-to-troubleshoot-electric-water-heater.html
Follow the troubleshooting steps, and it will tell you exactly where the problem is.
Otherwise we can guess at 20 different things.

Water heater is 240V because you have more than 1 element.
Did you test for 240V across top two screws of upper element?
Breaker can be tripped off on one leg and 120V arrives at water heater so heater looks like it has electricity, but circuit is not complete.

The problem can be loose wire, bad 240V circuit breaker, sediment reaching lower element, bad thermostat, bad upper element, tripped ECO reset button.

Did you replace factory insulation and cover over thermostats after replacing elements?
Did you vacuum out sediment when replacing lower element?

How long ago did you replace elements? If you turned power ON before tank was completely filled with water, then you burned out the element. If upper element is burned out, the tank has no hot water, even if lower element is good.
Test the upper element:
http://waterheatertimer.org/How-to-test-water-heater-element.html
See how a water heater works:
http://waterheatertimer.org/How-it-works.html

And finally, why so many folks write to fixya saying they replaced both elements and upper thermostat, but they never replace lower thermostat for another $6? I have been puzzled about that since lower thermostat turns on and off each time tank temperature drops and is responsible for keeping water warm during standby hours. Lower thermostat cycles more times than upper thermostat.

Add a comment if you need specific assistance with any of the testing steps.

Dec 14, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Rheem RHEEM 50 GAL ELEC TALL Water Heater 1.5 yrs old, power at the elements, new elements installed new thermostat installed, still no hot water.


Hello Check the red overtemp reset button at the temp control.Check for contintuity at the elements with a volt meter (pull one wire off first) they should have a reading otherwise they are open & shot.Last is overdrawing (busted pipe) shut off the cold water supply for a 1/2 hour and open it back up and feel the hot water supply pipe.Is it hot?The tank can't keep up with the demand.

Sep 16, 2010 | Rheem 50 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

We have a new Rheem 30 gal short water heater. It only seems to put out about 10 gallons of hot water before it starts going cold,any suggestions......


I am assuming that everything was fine and then all of the sudden available hot water usage time dropped.

On a dual heating element hot water heater it can be

1. Internal tank loaded with sediment (drain and purge from lower garden hose fitting)

2. Thermostat or element problem with ONE of the 2 heaters. (Trouble shoot element thermostat)

3. Check Circuit breaker for partial trip of the breaker.

Feb 14, 2010 | Rheem 30 GAL ELEC SHORT Water Heater 6YR...

1 Answer

No hot water, Rheem Model RR612T, Electric Hot Water Heater, 60 g


If you don't have current, 0v from terminal to terminal, then you don't have voltage to the elements. Replace the thermostat but check that you have 220v to the thermostat. It is possible that your breakers to the unit are either bad or tripped.

Apr 07, 2009 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

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