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How do i test themastat?


There is no reliable test for electric water heater thermostats
Replace thermostats and see if problem persists
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

Gene

Jul 02, 2014 | RELIANCE ELECTRIC WATER HEATER

1 Answer

How to test electric water heater thermostats


1) Copy following links:
http://waterheatertimer.org/How-to-test-water-heater-thermostats.html
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

2) There is no reliable way to test electric water heater thermostats.
This is because testing requires rotating the temperature selector, which may cause stuck-thermostat to temporarily unstick. So thermostat appears to work normally.
Moreover, thermostat come out of calibration over time, and the temperature selector might be on 125 but tank temperature at 100, and there is no specific way to measure calibration.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

3) I think it easier to replace both upper and lower thermostats to eliminate them as suspects when diagnosing wide-range of electric water heater problems.

Dec 07, 2012 | RELIANCE ELECTRIC WATER HEATER

1 Answer

Just replaced both elements to my reliance electric heater..heats fine but after 1 shower i have to reset red button and repeat process daily Whats up? thanks


Replace thermostats.
One of the thermostats is sticking causing overheating that trips ECO reset located on upper thermostat. There is no good way to test thermostats since testing means turning the temperature setting which temporarily unsticks bad thermostat so it looks like it works ok, so replace both thermostats.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

Sep 17, 2012 | RELIANCE ELECTRIC WATER HEATER

1 Answer

Called and was told to change lower thermostat but yet again I had to go push red reset button on top panel to get it back on to get hot water. what should I do now?


You have electric water heater.
You have top and bottom panel, so water heater is 240Volt.
No hot water because ECO reset button tripped.
Water heater works correctly when reset button is reset, so electric power and circuit breaker are good. Water heater wiring is probably good.

Problem is most likely bad thermostat.
I usually replace both upper and lower thermostats.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

If problems continue after replacing thermostats, then test and replace elements.
http://waterheatertimer.org/How-to-troubleshoot-electric-water-heater.html
http://waterheatertimer.org/How-to-clean-sediment-out-of-electric-water-heater.html

Aug 05, 2011 | RELIANCE ELECTRIC WATER HEATER

1 Answer

Themostat is bad


If water heater thermostat is bad, buy a generic thermostat at hardware store and install it according to instructions shown on link below:
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html
I usually replace both upper and lower thermostats for about $28.
Lowes sells thermostats and elements.
If your water heater is a single-element/ single-thermostat, you can buy any thermostat with red reset button.
Technically a single-element thermostat has 1 less screw, but either thermostat will work.
If your water heater is 120V or 240V, the same thermostat will work of either voltage.
This is true because the thermostat is a simple bi-metal heat-reading device that does not operate on electric current.

That being said, you might want to test parts before replacing anything, in case problem is element.
To do comprehensive electric water heater troubleshoot:
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

Image below shows generic thermostat with reset button. Each of these will work for single-element or dual-element tanks with either 120V or 240V. Wires connect just as they did on old thermostat. Tighten wires very tight. Press in reset button to make sure ECO is set. Put insulation and cover back over thermostat when finished.
geno_3245_194.jpg

Dec 22, 2010 | RELIANCE ELECTRIC WATER HEATER

1 Answer

WHERE IS THE RESET BUTTON ON THE 6EM30-2 FROM AUG 2004?


Electric water heater has panels located on front of water heater.
Remove top cover, and insulation to reveal thermostat and element.

Stand on dry surface, including boards or plywood.
Do not hold screwdriver in mouth.
Do not touch any metal.
Red reset button is located on thermostat.
Push in reset.
If reset will not re-engage, then thermostat may be bad, or some other problem exists.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html
Screw terminals on thermostat are live.
When finished, insulation and cover must be put back over thermostat so thermostat not exposed to cool air that will cause thermostat to misread tank temperature.
Put ear against tank to hear bubbly-fizzing sound that says water heater is working.

If water heater is leaking or wet, do not touch unless circuit breaker is turned off.

Electric water heater is fully repairable by homeowner.
ECO red reset button trips when upper thermostat senses overheating.
You many have underlying problem if reset continues tripping:
http://waterheatertimer.org/How-to-troubleshoot-electric-water-heater.html

geno_3245_157.jpg

Dec 09, 2010 | Audiovox Richmond 6EM30-2 30-Gallon 6-Year...

1 Answer

Circuit breaker in water heater will not reset.


If I understand correctly the red reset button or ECO located on upper thermostat will not reset.
Add a comment if problem is different.

Electric water heaters are fully repairable by homeowner.
If circuit breaker to water heater will not reset, then you need full troubleshoot using inexpensive multi-meter from Home Depot::
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

If reset button will not reset, then two things can cause this problem.
1) Ground short between upper thermostat and upper element, including shorted upper element.
a) Look at wires to see visible signs of high heat and burning.
b) Test upper element for short.
http://waterheatertimer.org/How-to-test-water-heater-element.html

2) Upper thermostat is bad. Test upper thermostat, or just replace thermostat using generic upper thermostat from hardware store.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

3) If problems persist:
Troubleshoot electric water heater using inexpensive multi-meter from Home Depot:
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html


Upper thermostats are generic unless you have "energy-smart" water heater that has control box and reset button located on top of tank.
geno_3245_119.jpg

Nov 29, 2010 | RELIANCE ELECTRIC WATER HEATER

1 Answer

Water gettin too hot even with thermostat turn down to medium. water coming out over-flow tube


electric or gas ? if electric replace thermostat also if electric it would have a top and bottom thermostat and element which did you adjust ?

Nov 15, 2010 | Water Heaters

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