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Electric Water Heater Wiring Diagram

If you are changing a water heater thermostat on your hot water heater, or would just like to troubleshoot your hot water heater, you may want to know how it is to be wired.

Here is a diagram of the way a normal electric hot water heater with two elements that run non-simultaneous will be wired. This means that only one element at a time will be working and have power going to it. The top element will heat water until it is heated to your set point and then it will switch the power to the lower element to heat the bottom of the tank. This gives you some hot water quickly, and then heats the rest of the tank.




For more information on how to troubleshoot electric hot water heaters you can check out this tip.

http://www.fixya.com/support/r4654730-electric_water_heater_not_working

http://www.fixya.com/support/r4656190-electric_hot_water_heater_temperature

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2 Answers

50 gal. reliance electric heater. Water is getting way too hot and the settings were not changed. elements must be working for the water to be so hot. My guess would be the thermostat(s) since it won't stop heating the water. If this is so, can I replace the thermostat(s) alone or do I need to change elements as well? thanks


Thermostats is in need of replacement and sounds like they are sticking. So it would be best to change both out. Turn power off to change them out it would be best for safety issues to change out as soon as you could. I have seen thermostats burn up in compartment on water heater.

Sep 20, 2011 | 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

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.


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

Nov 09, 2010 | RELIANCE ELECTRIC WATER HEATER

1 Answer

water heater needs a jump-start every morning


Hi,
Did they change the thermocaouple or the gas valve/thermostat???
My gues is that they changed the thermocouple and NOT the gas valve which also has the thermostat in it.

The gas valve is the problem... make them change that or give you a new hot water heater.

Heatman101

Mar 21, 2010 | Water Heaters

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