Question about General Electric GE SmartWater Household Water Filtration System - GNWH38F

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I dont know what ECO failure means or how to fix it.

We have no hot water in our home, and all the heater is telling me is that theres an eco failure. what does that mean, and how do i get hot water back?

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  • Anonymous Feb 21, 2009

    My water heater is doing the same problem it has an led light that flashes four time and then twice and in code its says ECO FAILURE im not sure whats wrong with it .

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This water heater is equipped with a control which has a built inE.C.O. (Energy Cut-Off). The E.C.O. will shut the gas off,
should the outlet water temperature exceed 200 F. If the
E.C.O. has tripped, the entire gas control must be replaced.
For gas control replacement, contact your local gas utility, or a
qualified service technician. The replacement control must be
an identical model to the control which has been removed.

Posted on Jan 27, 2009

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2 Answers

What does ECO failure mean on my hot water heater?


I'm guessing about model. I Goggled Eco failure. For reheme this site and discussion may help. http://terrylove.com/forums/index.php?threads/ge-rheem-power-vent-eco-failure-code-gg50s06rvj.43646/
but since it's gas, and an expensive unit I'd call the installer or his service.

Mar 08, 2015 | Water Water Heaters

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My Rheem water heater is giving a ECO failure, How can I fix this?


Question posted under Rheem water heater.
Model number and gas valve are unknown. Add a comment.

Following information applies to typical tank-type gas water heater, and does not apply to tankless water heaters, boilers, indirect heaters, solar water heaters, etc or for electric water heater.

Electric water heater ECO is located on upper thermostat.
Open top cover and ECO can be reset by pushing in red reset button,
Or ECO can be replaced by replacing thermostat. Add a comment.

Open following link to see typical tank-type gas water heater ECOs:
http://waterheatertimer.org/images/Intellivent-ECO-900.jpg
http://waterheatertimer.org/images/Typical-gas-valve-500.jpg

The ECO will trip at 180-200 degrees F.
This happens when the thermostat fails, then the burner stays on, and the water will continue heating.

With most water heaters, the ECO is one-time use device and the gas control valve is replaced.
Some water heaters have resettable ECO, but the overheating problem has to be solved.
Each water heater is different.
Contact Rheem or read manual for correct procedure.

If you have intellivent gas control valve, open following links for typical service manual:
http://waterheatertimer.org/How-to-adjust-temperature-on-water-heater.html#intelli
http://waterheatertimer.org/pdf/Intellivent-service-manual.pdf

More resources:
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

Sep 30, 2011 | Water Heaters

1 Answer

Rheem warrior glass serial num-rh1098154699 model num-71-40d b That is all the information i collected off my hot water heater we have no hot water at all and i dont know how to fix this problem...


The label would also say if water heater is gas of electric.
That would be helpful information that could lead to troubleshooting.
Serial number tells us water heater was made on Nov 1998, which tells us the manual will not be on the Rheem website.

So if you have electric water heater, and no hot water.
There can be 4 causes.
1) Circuit breaker is not delivering 240 to water heater. Test top two screws on upper thermostat to see if tank has 240V.
2) ECO red reset button is tripped. Open top cover on tank and push reset button.
3) Upper thermostat is bad. Replace thermostat.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

Nov 24, 2010 | Water Heaters

1 Answer

Reset button seems to be stuck down and run out of hot water to soon


If I understand correctly, you have an electric water heater.
The water heater is dual element and has 2 access panels on water heater.
You run out of hot water quickly.
And the reset is stuck down.

First of all, if the reset button is tripped, the water heater will produce NO hot water.
The reset, or ECO (electricity cut off), is designed to cut off all power to water heater.
So if you have some hot water, then ECO reset is fine.
The thermostat may be bad, but the ECO is fine

Next in line:
If your upper element is burned out, then the water heater will not make any hot water.
So if you have some hot water, that tells us the upper element is working.

The three remaining suspects are upper thermostat, lower thermostat, lower element

Let's test the lower element.
Turn off the power.
Remove both wires from lower element.
Test across both screws with a continuity tester.

d18ee07.jpg
The continuity tester has a battery and when light comes on, it says the circuit is complete.
Test1) Test across both screws on lower element with continuity tester.
If the light comes on then the element is good so far, but element has to pass one more test.
Test2) Test each screw on element to any bare metal part of water heater.
If the light does NOT come on with the second test, then element is good.
Element has to pass both tests. Light ON first test. Light OFF second test. Then element is probably good. This is not a fail-proof test but it is a good indicator.

I'm betting the lower element is burned out and you need to replace lower element. And you may need to vacuum out the sediment.
http://waterheatertimer.org/How-to-clean-sediment-out-of-electric-water-heater.html

Now if lower element is good, then the easiest thing is to do is replace both thermostats. After replacing both thermostats, the water heater will probably work. If there is still a problem, then the lower element was not as good as the test showed, and it should be replaced also.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

If you are still having a problem, answer back and we'll give you more details.

Oct 23, 2010 | Reliance & Electric Water Heaters

1 Answer

Light flashing - lockout condition - ECO failure


The ECO is designed to shut off the water heater in case of the water heater overheating. This is to prevent the water heater from exploding. I assume that you have a newer style residental water heater or a commerical boiler. The ECO is a fuseable link that is built into the control and located at the thermostat probe. If the water heater overheats then this link will melt cutting the circuit on the millivolt system(residential) or 24volt system(commercial boiler). If you look under the water heater control(where the temp adjustment is) there are usuall two wires that go from the control to the water heater. These are the ECO wires. Verify the wires have not been cut or damaged. If these wires are cut or damaged then the ECO circuit will be incomplete and you will get the ECO lockout failure. Also make sure that the flame lock-out switch is not tripped. It will be located at the burner compartment cover and have two wires going to it. Most have a little button in the center. These are to sense high heat and one might have tripped closing the circuit. You can push this little button to re-set the switch. If you feel a little "click" then the switch was probably tripped. If it does not have any button then it might be "self resetting". To test that switch use a continuity tester and the circuit should be closed. If these switches are working then the fusable link for the ECO is probably bad from the water heater temp getting too high or was defective and failed. This will require you to remove the water heater control valve and replace the fusable link. If you do not have experience with this I suggest you call a licensed plumber to make the repairs. If this repair is improperly done it could void the warranty on the water heater and/or cause property/personal damage or injury. There is a possiblilty that your water heater thermostat had failed causing the ECO to trip. If that is the case then the ECO safety did it's job.

Jun 26, 2010 | General Electric Water Heaters

1 Answer

My tankless eco-180dvn water heater is sending me a 12 code, what does that mean?


That is a flame failure..there are many reason for this
be sure you have gas
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Hi,
The ECO is short for emergency cut off.
The ECO is either tripped or it went bad. You may be able to reset it or you will have to contact a rep the sells your heater to get a new part. Some are resetable and some are not... not sure which you may have. The reset ones will have a little red button to push in the center.
The next rpoblem is to figure why the ECO went or tripprd in the first place. There is probably a reason or a cause. When you refire it make surte you donot have flame roll out and proper venting. Also make sure the the thermostat works and is not letting it get too hot.

I hope that this will help you to solve your problem!

Thanks for using Fixya!!

Heatman101

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