50gal marathon Rheem hot water heater was turn off can not get it to turn on

SOURCE: I have a rheem fury

I would like to know how old this heater is. This information can be found on either model or serial numbers.It won't appear obvious but last six numbers will tell you. You have already changed thermo-couple so I would check to see that it's properly centered in pilot flame.When you light it hold pilot button down for two-three mins.while watching thermo-couple.It should be a nice cherry red. If it is and pilot goes out after you release button then you either have another bad thermo-couple or gas valve is bad.If it does not get cherry red at least on tip then you need to reposition thermo-couple and try again. If gas valve is bad and heater is less then six years old valve will be covered under warrenty,however labor won't typically be covered unless you have extened service contract.Hope this helps.Thanks.

SOURCE: I have a Rheem Marathon 105 gal. electric hot

Check 240 circuit breaker.
Open top cover on water heater and push in ECO red reset button.
If reset button will not reset, then replace thermostat.
If reset is not tripped out, then either upper thermostat is bad, upper element is bad, or water heater might be getting 120V instead of 240V.
If you have some hot water, then best suspect is lower element.
http://waterheatertimer.org/How-to-troubleshoot-electric-water-heater.html

Upvote the help.
And 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.

SOURCE: how long does it take

Hi,
Assuming that this is an electric water heater... it will heat 22 gal/hr... so take the total volume and divide by 22 and you'll get the hours to heat up...

heatman101