Question about Water Heaters
Can i replace a 4500 watt heating element with a 5500 watt heating element on the rheem 71-40D water heater?
Probably not. The wire and circuit breaker would both have to be upped in size. Then the thermostat's may not handle the extra amps. The higher watt element won't make the water any hotter, but will make the recovery of hot water faster.
Posted on Mar 05, 2014
replace upper thermostat and hi limit switch. These are usualy made in one piece. On a two element heater, only one element comes on at a time
Posted on Mar 10, 2010
Check the breaker and top thermostat and make sure they are not tripped. Move onto replacing elements if above is not the problem.
Turn water and power off to heater and attach a water hose to bottom of heater to drain down tank. May have to open hot side on a facuet to get it to drain.
Once drained remove elements with 1 1/2" found at local hardware stores. once elements removed and new ones in place. Turn water on and get the air out of the system. Once water is flowing from the hot side from all of facuet's in house.
Once all air is out now yaou are resady to turn power onto heater.
Posted on Oct 10, 2010
It's probably bad upper or lower thermostat.
BUT... new element could also be shorted.
OR ... original tank is rated 1500 watt elements look at label on side of tank.
I always replace both thermostats to save time.
Lower thermostat costs $10 at Lowes.
Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on heater or any do-it-yourself project.
Fixya is always less expensive than a service call.
Posted on Jan 17, 2011
I have the same problem about every 3-4 months. Mine is also about 10 or 11. It is usually the sediment at the bottom that causes this. Once the plumber flushes it, it works again. My problem is that I dont know how he did it and the vavle is at the floor level. I am never home when it is repaired. Regular maintenance (flushing) is how you avoid this from reoccurring. That is, if that is the cause of your issue.
Posted on Feb 04, 2011
Not familiar with this model but most are generic.
Turn the water off;
Release the pressure with the pressure relief valve and leave it open;
Undo the cold water inlet assembly and drain the tank;
Disconnect the element wires from the thermostat;
The elements are held in by 4 bolts. Undo the bolts and remove element;
Installation is the reverse of above.
Posted on Feb 19, 2011
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