Question about Rheem Water Heaters

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I have replaced the bottom element,and now i have no hot water. I check with a meter and have power to the top element but not the bottom one.

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First of all, you have 240V water heater because tank has two elements.
You have no hot water, and tank has power to upper element.
Lower element has no power.

Something doesn't sound right.
You're not testing correctly.

Before doing anything, test across top two screws of upper element for 240Volts.
This will eliminate electrical problem as suspect.
Breaker must deliver 120V on both legs to complete the 240V circuit.
Every single-phase household circuit takes 2 wires to complete the circuit.
With 120V you need 1 neutral wire and 1 hot wire to complete circuit.
With 240V you need 2 hot wires, one from each hot busbar, to complete circuit.
Your water heater can appear to have electricity if breaker is delivering power on one leg of the 240V circuit.
To check breaker for sure, move wires to another similar size breaker to see if water heater functions properly.
http://waterheatertimer.org/B220C.html

If 240V circuit is good, then next thing is take 30 minutes and do full test of water heater parts.
This will identify exact problem(s) without guessing.
Buy 5$ multimeter from Home Depot. Install battery.
When test calls for continuity, rotate dial to Ohms (upside down horseshoe is ohms).
When test calls for testing voltage, rotate dial to 240-250-277 VAC
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

Add a comment for more help.

Posted on Dec 29, 2010

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2 Answers

Water only stays hot for about 5 min or


Gas or electric?
Electric water heater ... then test for crossover, check for water leak, replace thermostats, test elements
Gas water heater ... test for crossover, check for water leak
http://waterheatertimer.org/Crossover.html

http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html


http://waterheatertimer.org/How-to-test-water-heater-element.html

water leak: turn off all taps and put ear against pipe and listen for water leak... check if water meter advances when all water taps are off.

Gene

Oct 09, 2014 | Water Heaters

1 Answer

My hot water heater tripped the circuit breaker on the house panel. I reset the circuit breaker but the heater still would not begin to heat. I drained the tank and found one burned out heating element. I...


Tough problem here. Most dual element heaters share one line. if this is the case and you have power on the top and none on the bottom I would check the connecting wires one to another. also check the settings of the thermostats. They may be adjusted all the way down. If the wires and connections are good I would recommend ohm testing the new elements. I have burned elements out by introducing cold water to very hot coils (forgetting to turn the water on after flipping the breaker)
Never forget that calcium buildup will short the element. If touching on the bottom you will burn it up.
If this does not help try borrowing hot water from neighbors ;)
Good luck
Joe

Feb 15, 2011 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

I put a new top thermastate, bottom thermastate, new top element, bottom element, on my electric 50 gal tank and didn't get hot water. Only 4years old. Bought a new GE 50 gal. tank and installed, even a...


Hi,

The next thing you need to do is find out whether you have 240v to the bottom element....the top will not heat till the bottom is satisfied...
An electric meter is critical when working with these units....trace the power and see where it stops....

here also are some tips that will help you...

Electric Water Heater Wiring Diagram
Electric Water Heater not Working
heatman101

Dec 04, 2010 | Rheem Water Heaters

1 Answer

Have a new electric tank,top element wont come on,replaced thermostat 3 times top element comes on once but next morning not enough hot water&top element wont come on,can someone help? thanks


The top element only comes on when the heater is about out of water. The water is directed to the bottom of the tank. Cold water stays on bottom, Bottom heater element heats water. If you use all that water then the top of the tank gets cold and the top element comes. When the top of the tank is warm, then the bottom element comes on. I would susupect the bottom element as it does most of the work. If you have an ohm meter, turn off electric, and remove wires from element. Check element for continuity. If you don't get reading, then that element is bad.

Oct 04, 2010 | General Electric Water Heaters

1 Answer

My Reliance water heater suddenly produced only luke warmwarm water. I checked for power to the elements. Top one had nothing, bottom one had 110. I replaced the top element (which looked ok.) (power...


Lower element will always test 120V to ground since thermostats turn off one hot wire.

Listed below are suspects in order of ease.

1) Check that hot water is not running out of TP valve and down into a drain.
This will cause water heater to run all the time but not be able to keep up.

2) Test elements before replacing anything:
http://waterheatertimer.org/How-to-test-water-heater-element.html

3) Test electricity to water heater:
http://waterheatertimer.org/Test-electricity-to-water-heater.html

4) Replace both thermostats.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

5) Final thing would be full troubleshoot:
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

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 water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Sep 29, 2010 | RELIANCE ELECTRIC WATER HEATER

1 Answer

We had no hot water so we check the elements with a voltage meter and found the bottom element to be bad. We replaced it. Now there is still no hot water. When we test the voltage again there is continuity...


The elements never run at the same time, it would take to much energy for a standard residential heater. Instead, they rotate powering up back and forth depending on the hot water demand. If you getting 208 to 240 volts on the top element and nothing is happening, the top element is bad and needs to be replaced. If you can swing 30 bucks, replace both elements and both thermostats at the same time. This way you know that everything is new. Check out this generic water-heater wiring schematic.

Sep 06, 2010 | Reliance & 50gal Electric Water Heater

1 Answer

50 gallon electric heater not working after about 5 minutes in the shower the water gets cold and the rest of the house i do have 240 going to water heater thermostats goood element good


Some elements will read with a meter good until they heat up.

Hot water then going to ice cold top element is working and bottom bad. Luke warm water and then goes cold bottom element good and top element bad.

Elements and thermostats are not to exspensive to replace.

If you have power only two thing's left are the thermostat's and the elements.

May 21, 2010 | Water Heaters

1 Answer

No power to the bottom element


First things first, you are not supposed to have power to both elements at the same time. The top element comes on and heats the top of the tank, then the top goes off and the bottom comes on. Now, check power on the top element, put your meter probes on both screws on the element, you must have 220 to 240 volts between these two screws. If the voltage is good then you have a bad element, if the voltage is not there, then you need to check the voltage at the top 2 screws on the upper thermostat, if it is okay there, maybe the hi limit has tripped, push the reset button on the top thermostat, if it is tripped it will click and start heating right away. If the hi limit is not tripped then you will need to replace the upper thermostat.

Mar 16, 2010 | General Electric GE SmartWater Household...

1 Answer

Hot water runs hot for afew seconds then goes cold


Sounds like one of the heating elements has gone out. There are two elements in Electric Water Heaters. Top and Bottom. You can check them with a volt/ohm meter. Turn OFF power to the water heater FIRST.
Using a volt/ohm meter set to measure ohms check each element for continunity. if none is measured replace the element from your local home supply store.

Dec 06, 2009 | Water Heaters

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