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Elec. hot water heater

Hot water lasts about 3 to 5 minutes then turns cold.

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Thanks for your question, sounds to me like you have a burned out bottom element in the tank, depending on how old the tank is, the amount of calcium in the tank, will determine if you should repair or replace, if your tank is fairly new, then you will first have to shut the power off to the tank, turn the water off at the shut off, drain the tank, write down the model #, the serial #, what brand, and the ratings on the lower element too, go to the hardware store, buy a new element and element wrench, return home, write down which wire goes where on the element, very important ! remove wiring, remove element, that's the hard part most of the time, install the new element, rewire, close all panels, refill tank, do not turn the tank on before filling !! then after tank is full, turn power back on, you will have to wait about an hour for hot water, if the unit looks to old, then replace it. I would say anything over ten years is worth replacing, hope that helped ya, thanks again for your question, let us know what happens, mr.grzz

Posted on Jan 21, 2009

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Posted on Jan 02, 2017

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Suburban Water Heater-Sw10de-10 Gal Gas/Elec W/Direct Spark - 5063A


Manual Yes 12 volts may help. I can't see anything about your switch from this manual

Dec 02, 2013 | SUBURBAN MANUFACTURING C Suburban Water...

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Were is cold water inlet and hot water outel on model 71-40d b


Cold inlet and hot outlet are marked on top of water heater.
Usually there is a letter or word embossed into the metal top.

If tank is connected, then turn on hot water tap for a few moment and feel which pipe is hot.

Cold water enters bottom of tank through dip tube located on cold side. If hot and cold are reversed, the water heater will not perform as expected.
http://waterheatertimer.org/Water-heater-dip-tube.html

Aug 05, 2012 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

2 Answers

Leeking water from bottom


I wrote a page on leaking water heaters with resources and information:
Page lists things to check.
http://waterheatertimer.org/Water-at-bottom-of-water-heater.html

Also run hand over tank to find warm spot that says where leak is coming from
A rusted tank cannot be repaired.

If your tank is rusted out, it might burst open and flood the area.
Hot water inside tank is under pressure.
Turn off heat source to water heater.
Turn off water valve located above tank.
Open tub faucet on hot side and relieve pressure from tank.

You can limp along with a leaking water heater by turning it on when hot water is needed.
For example a shower uses 5-9 gallons hot water.
Turn gas water heater on for 15-20 minutes.
Turn electric on for 20-30 minutes.

To conserve resources with next heater:
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html

Nov 15, 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...

3 Answers

Water turns cold very quickly


I had the EXACT same problem (installed my tankless last winter and worked fine, now this summer it fluctuates, have to turn the shower completely off and then on again to get any hot water and then it only lasts for a couple of minutes!) Argh - it is frustrating!

Here's what I found: the demand for hot water is lower during the summer (hot) months because the "cold" water coming in is already quite warm. You don't need as much hot water to make the shower temp comfortable. SO, my tankless was shutting off due to low flow demand. I've removed the flow restrictor from my shower head and it helped alot but didn't completely solve the prob. Next step is what has been recommended to me by several people but is much more expensive - change the pressure valve on your shower to a temperature valve. Or just wait til winter and it should work ok again :)

Jul 06, 2010 | Bosch & Tankless LP Hot Water Heater

2 Answers

Our water keeps fluctuating between hot and cold. The hot water will not stay on. It lasts about 1 minute and then turns to cold. After about 2-3 minutes it will get hot again?


The inlet line to the water heater goes to the bottom of the water heater to prevent the cold incoming water from mixing with the heated water at the top. The tube going to the bottom can come loose.

Turn the water off and relieve the pressure by opening a faucet and remove the fitting where the water enters the heater. You can see if the pipe is still connected.

Jun 15, 2010 | Water Heaters

1 Answer

No hot water


Take these steps, ensure you are recieving correct voltage to the heater. If this has been confirmed, then using an ohmmeter, with the power turned off, check the resistance through you heaters. You should read a resistance through the heater(s). If you read OL, it means the heater is broken, and if you read 0 the heater is shorted. Hope this helps

Mar 29, 2010 | Rheem 30 GAL ELEC SHORT Water Heater 6YR...

1 Answer

Hot water does not last long. Model 82vh40-2 mnf. 05/2005


If the lower heating element burns out the upper element will heat the top part of the tank then shutoff. homw depot/lowes etc should carry elements. 1 turn off breaker, remove element access cover (the 2 panels on the front of the heater) test for electricity at the reset button ( uppermost device in upper panel) to make sure power is off. 2 turn off water (I usually turn off the cold water main to stop water cross feeding into hot supply line back into heater) 3 disconnect the 2 wires on the lower element, test with continuity tester. shhould be no continuity between terminals and tank, but around 10 ohms between the 2 terminals. Check the thermostat for continuity if tank is cold thermostat should be closed ie zero ohms across the 2 terminals.
If stat is bad replace stat; disconnect wires push it up out of the spring clip insert new stat reconnect. If element is bad: drain tank. connect garden hose to tank drain valve, open tank drain valve turn water main on to clear rust sediment and get water flowing. Next remove filter screen from a hot water faucet then turn on ( a hot faucet upstairs or higher than tank drain). Now turn water main off, air will now go in through hot faucet and tank will drain, takes about an hour. Use a water heater element wrench about$10 to remove element(s) make sure no bits of rubber gasket are left in element opening- dig em out with a screwdriver if needed. Insert new element with its gasket and tighten. reconnect wires DO NOT TURN ON ELECTRICITY! BE SURE TO FILL WATER HEATER WITH WATER ! Turn water main back on -air will come out of the hot faucet for several minutes. When water runs without any air sputtering, turn off faucet and replace the faucet filter screen. check element(s) for leaks. turn breaker back on.

Feb 17, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

I have replaced my electric water heater and I have checked everything I can think of and I still run out of hot water in 3 minutes. What on earth is the problem.


3 minutes?? does the water run cold then? or just warm?
Is this what the tank you replaced was doing? If so, then you may have: 1 a recirculating pump instant hot water system thats faulty and allowing cold water backflow into hot water piping. 2 A tempering valve that has stuck, allowing cold water into your hot water system.
Or maybe a broken or missing dip tube in your new heater.
If after 3 minutes the water is coming cold out leave that faucet running and go to heater and feel the hot water outlet pipe from the heater. if that pipe is hot then the heater is not the problem. If the hot pipe from the heater is cold the heater is the problem. (Make sure the cold pipe coming into the heater is connected to the Right side marked "cold" !) If there is a tempering valve by the heater: feel the output from the tempering valve, if it is cold and the pipe from the heater to the tempering valve is hot, then the tempering valve is the problem. If all these are OK somewhere in your plumbing system hot and cold may be connected possibly a faucet or showerhead that is shut off at the spout/head, but hot/cold handles are left turned on then cold water can backflow thru hot pipe.

Jan 18, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

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