Question about RELIANCE ELECTRIC WATER HEATER

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How to change a thermostat on reliance 606 hot water heater. water is getting too hot and there is no sediment build up. also water heater is only 4.5 years old.

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  • Mike Butler
    Mike Butler Nov 10, 2010

    Gas, or electric?

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1 Answer

I wrote a page for changing water heater thermostat.
The photos take you through step-by-step
I recommend replacing both upper and lower thermostats so it eliminates thermostats as possible cause if water heater keeps overheating.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

The Reliance 606 manual shows your water heater uses generic upper and lower thermostats from hardware store.
http://www.reliancewaterheaters.com/lit/om/manuals/185761-000.pdf

Likely the thermostat will solve the problem:
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

Posted on Nov 10, 2010

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Hot water tank wont heat water, how do you relight or resat, its a reliance self cleaning 808


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www.reliancewaterheaters.com/resources/instruction-manuals
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How to light the pilot on a Reliance 606 water heater ...

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Reliance Water Heaters - Consumer Affairs

www.consumeraffairs.com > Homeowners > Bath & Plumbing

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I purchased a Reliance 606 water heater in 2010. ... That they don't TELL you there's areset button or that I'm having conspiracy thoughts ... After several attempts, I was able to relight it. ... It's heading to the junk pile and I will purchase a new reliable (NotReliance) ... Checked breaker and changed breaker still no hot water!

Dec 28, 2015 | Reliance Water Heaters

1 Answer

The reliefe valve opening on my reliance 606 gas water heater is hissing. what could be wrong?


thermostat.Check Settings,and if you turned it up or down while power was still on, thenchange them both. also t+p valve may be weak from temp overshoot.Change it if it continues after replacing thermostats

Aug 21, 2014 | Reliance 606 Series 40 Gallon Natural Gas...

1 Answer

No hot water


It is probably the thermostat. I would suggest replacing that next.

Feb 24, 2014 | Reliance & 40 Gal Electric Mobile Home...

1 Answer

We have a reliance 600 about 4 years old. Recently when you turn on the hot water you get a lot of air out of the line. Also the other day we had scorching hot water and then no hot water. We reset the...


1) Reliance 606 Electric water heater, AO Smith subsidiary.
Good brand.
Copy following links:
http://waterheatertimer.org/How-to-test-water-heater-element.html
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

2) First: Test elements using cheap multimeter from hardware store.
Next: If elements test OK, then replace both thermostats.

3) If that doesn't solve problem, then add comment Jan 2013 and report what you find.

Jan 26, 2013 | Water Heaters

1 Answer

I have a model 640 Reliance water heater. SN # A07A150454 M,F, 01/30/2007. About 3 months ago the water started getting cooler, then won't start. I turn the control up, then it starts, but the...


I believe 640 is typical tank-type atmospheric-vented gas water heater.
Gas water heater problems can get complicated. New heater sells for $350 at local box store.
http://waterheatertimer.org/How-to-install-gas-water-heater.html

If thermostat is not controlling temperature accurately, then (1) gas control needs replacement (2) water heater has sediment build-up (3) combustion and burner parts need cleaning. (4) All three things above, plus additional causes such as bad venting or not enough combustion air.

Usually recommended that plumber replace gas control valve thermostat:
See typical tank-type thermostats:
http://waterheatertimer.org/images/Typical-gas-valve-500.jpg
http://waterheatertimer.org/How-to-adjust-temperature-on-water-heater.html

Clean sediment out of tank:
http://waterheatertimer.org/Clean-sediment-out-of-water-heater.html

Clean combustion chamber and burner parts and troublehoot venting and air supply:
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot
http://waterheatertimer.org/images/Clean-burner-300.jpg
http://waterheatertimer.org/pdf/Bosch_Ventilating_tight_houses.pdf

Aug 07, 2011 | Reliance Water Heaters

1 Answer

Reliance 606 electric 40 gallon hot water heater will get extremely hot and then shut off. I have to push the reset button after showers. I have turned the heat down but it still gets to hot. Thermostat...


ECO reset button trips for several reasons.

1) Easiest thing without testing, is replace both thermostats.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

2) If problem persists, then test elements.
http://waterheatertimer.org/How-to-test-water-heater-element.html

3) If problem continues, do full troubleshoot
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

Add a comment for more free help.
Also 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.

Mar 08, 2011 | RELIANCE ELECTRIC WATER HEATER

1 Answer

Hot water runs out to quickly. Replaced bottom element but did not help.


If dual element water heater has some hot water, that says certain things.
-Water heater is getting 240V from breaker.
-Upper element is working
-Neither element is shorted to ground
-Factory insulation and covers are in place and thermostat not exposed to cool air.
-ECO reset is not tripped and there is not overheating event.
-Water pipes and heater are not clogged.

Here are remaining suspects:
1) Leaking faucet or TP valve is leaking hot water continuously. Check for leaks.
http://waterheatertimer.org/How-to-replace-TP-valve.html

2) Loose wire/ bad wire between upper and lower sections of water heater: remove covers and check for loose wire and signs of high heat and burning.
Also do full troubleshoot:
http://waterheatertimer.org/How-to-troubleshoot-electric-water-heater.html

3) Bad lower element
http://waterheatertimer.org/How-to-test-water-heater-element.html

4) Sediment build up bottom of tank:
Sediment build-up causes lower part of tank to heat slowly, so upper part of tank can cool, and tank has less hot water.
http://waterheatertimer.org/Clean-sediment-out-of-water-heater.html

5) Bad upper or lower thermostat: Replace both thermostats for $28.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

To preserve tank and save money long term
http://waterheatertimer.org/Replace-anode-rod.html
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html

Add a comment for more free help.
Also take advantage of fixya expert assistance live.
For a price, expert works with you via e-mail while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Feb 20, 2011 | RELIANCE ELECTRIC WATER HEATER

1 Answer

606 electoric little or not hot water


Reliance 606 240Volt water heater.
This water heater is fully repairable by homeowner

You have some hot water so that says upper element is good.
It also says electricity to water heater is good.
Also your reset button is not tripped. water heater is not overheating.
And covers and insulation are installed properly on water heater.
Water pipes are not clogged, and tank is not leaking water on floor.

Here are the suspects:
1) Leaking faucet or TP valve is running hot water continuously. Check for leaks.
http://waterheatertimer.org/How-to-replace-TP-valve.html

2) Loose wire/ bad wire: remove covers and check for loose wire and signs of high heat and burning.
Also do full troubleshoot:
http://waterheatertimer.org/How-to-troubleshoot-electric-water-heater.html

3) Bad lower element, possibly due to sediment build up: Test element.
http://waterheatertimer.org/How-to-test-water-heater-element.html
http://waterheatertimer.org/How-to-clean-sediment-out-of-electric-water-heater.html

4) Bad upper or lower thermostat: Replace both thermostats for $28.
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 water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Jan 31, 2011 | Reliance Water Heaters

1 Answer

I HAVE A RELIANCE 630 DORT( 40 GALLON) THAT IS ONLY GIVING ABOUT ONE MINUTE OF HOT WATER AND AN ELECTRICIAN THAT JUST WANTS TO CHANGE PARTS. HOW COULD I TEST THE DIFFERENT OPTIONS BEFORE I JUST START...


Reliance is AO Smith company
http://www.aosmith.com/OperatingUnits/Detail.aspx?id=138&ekmensel=c580fa7b_12_0_138_3

Age of water heater is on serial number located on label on side of tank. First digit is letter, next two digits are the year. So C04 is 2004. Label also shows wattage of elements inside tank.

606 water heater at Reliance
http://www.reliancewaterheaters.com/prod/e-606.html

PDF spec sheet below shows your tank takes 4500 watt element.
I buy ordinary screw-in type 4500 watt elements for $20 at Lowes, I can't remember price exactly because they're inexpensive.
http://www.reliancewaterheaters.com/lit/spec/electric/R606E0510.pdf

Typical 606 manual:
http://www.reliancewaterheaters.com/lit/om/manuals/185761-000.pdf
Shows element and cleaning/replacement page 20.
We know your lower element is burned out because plumber checked and said problem is element.
We know upper element is working because you have some hot water.
If upper element is bad, then tank has no hot water.
http://waterheatertimer.org/How-it-works.html

Photo from manual shows typical element that I buy at Lowes or hardware store:
Manual does not mention special element required.
Your element burned out probably because sediment is built up inside tank, and not because stock elements are inferior.
Is your electrician/plumber also going to clean sediment out of tank?
Changing element and cleaning sediment will restore full efficiency to your tank.
geno_3245_156.jpg

Here are step-by-step images that show do-it-yourself, so you can see if this is correct project for you:
http://waterheatertimer.org/How-to-replace-water-heater-element.html
Page shows how to drain tank, replace element, and has links to troubleshooting if you want to test parts and learn more about your water heater.
Also see:
http://waterheatertimer.org/Replace-anode-rod.html

Dec 08, 2010 | RELIANCE ELECTRIC WATER HEATER

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