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GE Smart Water Model # GE40M06AAG

I came home to hear the water heater with a hissing sound...didn't think much of it until the next afternoon, it was still making a hissing noise and I noticed the pipe that goes thru the wall to the outside was leaking, rather heavily...there is a sort of relief valve on top of the heater and when I lifted it, warm water leaked out and about 2 minutes after that, the water stopped leaking out of the pipe outside...does anyone know what this could be or am I able to fix this water bill will be thru the roof otherwise :(

Posted by angeldna on


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  • Water Heaters Master
  • 2,547 Answers

Bad relief valve or too much pressure in the tank. Does water heater system have a pressure blotter tank that allows for expansion(an expansion tank)

Posted on May 05, 2017


5 Related Answers


  • 37 Answers

SOURCE: GE Profile Smart Water Heater leaking at top/no hot water

Hi, has your problem been solve yet? please respond

Posted on Nov 23, 2008


James Chandler

  • 686 Answers

SOURCE: Relief valve constantly releasing water.

lower your thermostats a bit. If your temperature is set to the hottest setting, then chances are no relief valve will do

Posted on Jan 08, 2009


Ned C Cook

  • 3433 Answers

SOURCE: GE Smart Water Heater - Model #GE40M06AAG - 40

There should be a faucet on the side . you hook up a garden hose and drain it.

Posted on Nov 18, 2009


  • 3 Answers

SOURCE: Rheem water heater Model 81v40DT

It sounds like the pressure/temperature relief valve is stuck open slightly, and draining out the PVC pipe. This is common in poor water locations.

You can try lifting the release on the top and letting it pop shut again, but chances are good that by now the seat has been destroyed by the water passing over it. Replacements are available at any home store, just remember to drain the water out of the heater so you don't flood the garage. MAKE SURE YOU TURN OFF THE POWER FIRST OR YOU WILL BE REPLACING THE ELEMENTS ALSO! You will need to wrap the threads with teflon tape before installing the new valve.

Posted on Mar 30, 2010


  • 102 Answers

SOURCE: we have a leaking water heater.

As far as a shut off valve on to the water heater, if there is one you should be able to see it on the water line going to the heater. This is not common in mobile homes. If there is not one I would strongly recomend you install one when you replace the heater. If it is going to be a while before you replace the heater you might consider draining it and cutting into the inlet line and installing a shut off valve, so you can turn the house water back on. I hope this helps.

Posted on May 13, 2010

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Premier Plus Model#MHE62-30H-045DV Ser#45T421608 I just purchased this hot water heater.I had it professionally installed by a plumber.We had hot water before I went to bed but when I woke in the morning...

sounds like you have a power problem. or worst than that a leak . So lets look at the leak first. Turn off the water supply at the water heater on top. This valve should be on the cold side of the heater on top.

Turn it off, check and see if you have pressure in the house by turning on a faucet. It should run for a second then stop. That is good if it does. Leave the valve off on the heater and check that your breaker is on. Reset the breaker by turning it on and off.

Wait about 2 hours turn the heater back on and check to see how hot the water is hot then you might have a leak in the building. If there is not or little hot water. Check the wires where it connects to the water heater. You might only have one wire that is connected right.

The best thing to do is to get a amo meter and check to see if you have 220 if you dont have 220 you will not warm up the water the way it should.

Thanks Richard

Sep 07, 2011 | Premier Water Heaters

1 Answer

We aare in a home unit with a Rheem 80 gallon electric hot water system installed JANUARY 2011 it and it has issued terrifyingly loud rumbling noises. When I pulled the pressure release lever i t...

1) The pressure release valve is operating correctly and the sound it made is typical.
So pressure release is okay.
Always protect yourself from very hot water that can spray out of pressure release.

2) Rumbling sound is typical sign of sediment build-up inside tank, and usually indicates that tank needs to be cleaned out.
Seems odd that a brand-new tank could have sediment after only 8-9 months.
Did somebody recycle a 'new-looking' heater and sell it as 'new' heater?
Look at label on side of tank, and find brand and serial number to find actual age of water heater:

3) Because sound might not be sediment.
You can add a comment and it will send e-mail, and I will continue to answer.
No reason to be terrified of water heater. They are very safe, and homeowner can fix electric water heater same day for a few dollars.

4) Please listen to exactly where sound is coming from.

5) If sound seems to come from the pipes, and pipes are vibrating, then the plumbing is suspect, for example a check-valve, or pressure valve, and we can talk about that when you add a comment.

6) If sound is from inside the tank, then I suggest you turn off power, let water cool, drain water heater, open bottom of water heater, remove element, and check for sediment.

7) Take a moment and rate answer:
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.

Sep 05, 2011 | Rheem 50 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Dsi flt light keeps going on and the black water light says full when we just emptied it.

DSi light coming on is to alert you that the water heater didn't light on propane for one reason or another. Sometimes people just forgot to turn propane on or are out of propane. What happens when you shut it off and turn it back on? (listening and watching from outside with cover open) DO you see or hear sparking?

As far as black water showing full when just emptied, it is most likely a piece of toilet paper inside the tank that is hanging up from top probe on inside of tank, and touching lower probe, thus giving a full reading. This is very common, at all levels. You can buy a rinse wand and rinse inside of tank through toilet to try and wash it off, or live with it for now, and add lots of water or cleaner deodorizer to tank , or buy probe cleaner, or even the old standby, some laundry soap added to tank , then fill tank close to full with water and rock trailer to swish it around, then drain it. Most times, waiting until next dump, and adding lots of water beforehand, will fix it.

Jul 11, 2011 | RTO Atwood DSI-RV Water Heater-6 Gallon

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Why does my self cleaning gas water heater make clicking noises?


All tank water heaters make some amount noise, clicking and "snapping" sounds, particularly after much of the hot water in tank has been used (like after a long shower) and has been replaced by cold water that is being heated vigorously.

If the noises are accompanied by poor or erratic performance, or obviously if something malfunctions, you may require the services of a repair connection.

Hope this helps.



May 03, 2011 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

2 Answers

Rheem water heater Model 81v40DT Water heater is making a "shhhh" hissing sound. It began on Friday and has continued continually. I have checked all of the water valves in my house and have not noticed...

I can't find details of this model, but I am assuming it is an electric heater.

Turn off the elecricity supply to the heater. If the sound you describe subsides almost immediately then the problem is a faulty thermostat. The sound is caused by the water overheating (the heating element is permanently on).

(If the sound does not subside quickly then you have a different problem.)

Check the wiring to the thermostat. If that is OK you will need to replace the thermostat.

Mar 09, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

2 Answers

Water heater makes a constant hissing noise with power on or off?

You have a water leak under the house, but need to know if it's a gas heater or electric. check the Pop off valve on top of the tank it has a short handle and should go threw the floor pull up on the valve and let it sit back down, if it stops the high pressure pop off valve is leaking, you can buy it and replace it for 5 or 10 bucks, if that does not stop it look under the house. Also use a broom stick and put the round end at the wall and the other end near your ear and check the wall and floor for the noise the closer you get the louder the sound. Hope this helps. If you look under the house and see water you know you got a leak in the pipes or the tank itself.


1 Answer

After about an hour the breaker trips on a single element Rheem water heater. 2Meg ohm to ground from the element terminals: 700K between element termianals. theromstat connections to ground infinate. (can...

I would say then the heating element has a resistive short to ground. The 1.98m Ohm reading is high, but not high enough -- should be infinite. I would say replace heating element... And, when you install new one, make sure there is no water leaking thru heating element cavity and ensure area around cavity is clean & "in order".

How old is water heater?


Sep 29, 2009 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Hot Water inconsistent

Something you can do, following your fathers logic,   is to attach a hose to the drain of the tank and run water from the bottom of the tank into a drain untill all the sediment is removed (Water runs clean). This is normally done once a year as preventive maintenance  on all tank type water heaters. The logic sounds good to me. 

Feb 16, 2009 | General Electric GE SmartWater Household...

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