Repair guides and support for gas and electric hot water tanks, boilers and household heat exchangers.

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Thermostat failed, I replaced it ,its still over heating and tripping

The thermostat kept tripping so I replaced it. It fixed problem for couple months now it's tripping again. Should I replace the elements now or just one. It has upper and lower elements. It's a AO Smith that's only 4 years old is that normal.

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Hi @spydr03

Do you have a multimeter? well it is good to check those, there are tons instruction, which i think is very helpful to troubleshoot the water heater.

https://www.youtube.com/watch?v=SlyStHM9...

btw check that there are no water leaks and inspect the electrical cables.

just sharing:

my home is using rheem, and depending on the usage, the replacement i had done, is due to corrosion inside the heater which i need to replace the whole tank, so i guess the current one is about 7 years plus.

I was informed by my dad that the circuit breaker trips when turning on the switch of the heater, following the troubleshooting video on youtube, isolating, removing all power cables, eliminated the possible cause of issues one by one, until i notice there is actually a short on the power cable itself. open up the cable duct and to my horror, it melts. The contractor has used a wrong type of cable, which cannot handle high current, AWG ... replaced on a better and correct for the appliance and it works.

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new elements and breakers keep triping.

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greg will be eternally grateful.
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