Is it just that simple Push the reset button and no more problems?

You have other problems than just a thermal overload. Both heating elements in your water heater are bad and need to be replaced. New heaters are about $15 US each. Labor to replace varies with the area and how busy the repairman is when you call. The popping you heard was the last gasp of the heater elements. Once the elements die it is a sign of an aging heater that will need to be replaced in the near future. Good luck.

To me it's sounds electrical & by pushing the reset button & with nothing happening, means that something isn't right somewhere.

Often come across clients constantly pushing the reset button on their household water pump in the hope that it will start up & go, rather than calling the right trades person who will know from an inspection where the fault lies.By continually pushing the rest button you could make the problem much worse & causing you excess expense, when if you had contacted the right person originally it may have saved you a great expense.

Cheers!!

open upper panel to access upper thermostat(tstat) best to kill breaker rather than getting zapped by 220 volts. push in red (thermal reset) button. turn power back on. If this happens again, replace both elements. Most instances that I have ran into, it was lower tstat that was the culprit. If you have a cheap ($12) volt ohm meter (or want to get one) you can check heating elements to see if they are good. Heres how. Kill power to heater, disconnect wires from elements, set VOM to resistance, should say kiliohms, touch leads together and adjust knob on side of VOM to zero, so it won't show any resistance. touch leads to element screws, then touch 1 lead to one screw and other lead to tank (the tank that element screws into not one with labels. Do that with both leads on both elements. If good, it will show no resistance. NOTE; upper tstats of different manufactures will be different enough so that 1 or 2 wires will not reach proper screw

Resetting the pushbutton change won't override it, it is going to easily reset it. while a similar concern arises, it is going to trip back. Sounds as though the thermostat is unsuitable and defaulting to huge open -- that's pumping 220 volts by way of it 24/7. in case you very own the abode, that's quite useful to get a clean water heater -- elec are high priced to function, and extra moderen fashions are extremely extra effective. once you're renting the home proprietor could pay to have it fastened -- probable would have new thermostat put in.

I would call a plumber to be safe.