Question about Reliance & 40 Gal Electric Mobile Home Water Heater

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Woke up to no hot water changed out both heating elements and both thermostats meter says wiers are hot checked breaker its got power still no hot water any suggestions

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Water heater can test for power, but is only receiving 120V instead of 240V.
Test that upper thermostat is getting 240V across top two screws of thermostat.

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

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Posted on May 29, 2011

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In-home Hot water heater; I've changed elements, both thermostats, and the electronic circuit on my circuit breaker. Is there any other reason why it is not heating up my water?


Use a test meter between elements to see if your getting continuity
and between power lead before elements. There has to be a line break if your not getting power entering elements.

Nov 29, 2014 | Water Heaters

1 Answer

NO HOT WATER BREAKER IS OK


Not knowing how old the unit is, it's possible that both elements could be bad, especially if you ru out of hot water quickly. If your sure the breaker is okay and you know how to use a voltage meter. Check the voltage at the thermostats and elements. While you are looking at the thermostat(s), press the red reset button and give it about 5 minutes and see if you hear the water heating up. If you have voltage at the thermostats and the elements. Turn the power off and check for continuity through the elements. If you don not have continuity, the element is bad. If all seems to check out, you probably have a bad upper thermostat. Check all connections and inspect the wires.

Jul 06, 2011 | Rheem 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 awoke to no hot water, my heater is three yrs old and i just changed my upper and lower element and upper thermostat, still no hot water then i checked to see if i was getting power and i am, is there...


Your water heater has 2 elements so its 240Volts.

1) If breaker is delivering power on one leg of the 240Volt circuit, then water heater can appear to have electricity, but tank is receiving 120V. Both 120Volt legs are needed to complete the 240V circuit. Double check for 240Volts.

2) Review electric Load.
Water heater label shows wattage of tank.
If tank is 4500Watts for example, you installed 3500 or 4500 watt elements.
With 5500 Watt elements you need 30 amp breaker and orange-colored 10 gauge wire
With 4500 Watt elements you can get by on 20 amp breaker and 12 gauge wire up to 75 feet away.

3) Check ECO red reset button on upper thermostat. If reset is tripped, then ECO is reading high temperatures. Suspects at this point are defective upper thermostat, shorted wire or bad lower element.

4) Also note that insulation and cover must be re-installed over thermostat. Thermostat reads temperature through wall of tank. If outside air circulates around thermostat, that can cause a mis-read and cause tank to overheat and ECO trips.

If you don't want to test the heater, replace both thermostats for about $25. Return the upper thermostat for a refund. Then see of problem persists.

Here's what I would do.
1. Check breaker for 240
2. Check water heater for 240 across 1 and 3 screws on upper thermostat
3. Note wiring and breaker size.
4. Note label on side of tank.

5. Look at end of new element to see wattage printed on each element. Look for sings of high heat and burning. Tighten screws on elements.

6. Check ECO reset button. Look for high-heat and burning. Tighten screws on thermostat.

7. Test upper thermostat as follows:
http://waterheatertimer.org/images/Electric-diagram-water-800.jpg
Test left-side #1 screw to right-side middle #4 screw. Test should read 240V at all times. If not, then ECO is tripped, thermostat is bad, or electricity is OFF

8) Water heater is cold so upper element should be ON. Test upper thermostat.
Test right-side #3 screw to left-side bottom #2 screw and it should read 240V
Test right-side #3 screw to right-side bottom #4 screw and it should read 0 volts

8. If upper thermostat checks out. Test upper element for 240 across both screws. If upper element does not read 240 when water is cold, then element is bad or there is a shorted wire between element and upper thermostat.
How to test element:
http://waterheatertimer.org/How-to-test-water-heater-element.html

9. Do a full troubleshoot on electric water heater
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

Dec 07, 2010 | General Electric GE SmartWater Household...

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Shut off electric current from the breaker switch to Rheem electric water heater for the summer on May 2, 2010 since no hot water needed for the summer. In an attempt to turn on the breaker switch to the...


hi, might want check the thermostat switch, and the heating element. the heating might rusted out, if water wasn't drain out over summer thanks.

Sep 28, 2010 | Rheem Water Heaters

1 Answer

New Rheem electric 50 gallon not heating


Check the elements, if you have access to a meter to check them. If they are getting power to elements and you have no hot water.
The elements are not working correctly. I had some elements check out ok till the thermostat's turned on and the elements didn't heat.
Sounds like the elements are bad.

Jun 01, 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...

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Whirlpool temp control on electric water tank


Most electric water heaters have 2 heaters - an upper and a lower, each with it's own thermostat. These are readily accessible by removing the screw covers on the side of the tank. Careful - the thermostats have 240VAC on the terminal screws (unless you have a small 120VAC heater) if the circuit breaker or fuses feeding the heater are still on - turn them off before proceeding. After removing the two screw covers and pulling back the insulation you will see temperature (screw) adjustments for the upper and lower thermostats, with a temperature indicating pointer attached to each screw. Set both thermostats to 125 degrees or so. Push the insulation back in place, replace the covers and turn the circuit breaker back on that feeds the water heater. You should have warm water within 15 minutes and hot water within a hour or so.

If the water still does not heat, then you have to troubleshoot to find the problem. With a voltmeter determine if 240VAC is actually getting to the water heater. Remember, the upper element has priority over the lower element, and if the water is cold, the upper element will try to turn on and this locks out the lower element (only one element is allowed to heat at any given time). The lower element comes on ONLY after the upper thermostat is satisfied. Therefore if the upper heating element is burned out you will never get any hot water. If you suspect this, TURN OFF THE POWER TO THE HEATER and take a resistance check of the upper element.

Nov 16, 2008 | Water Water Heaters

1 Answer

No hot water


If the water does not heat, then you have to troubleshoot to find the problem. With a voltmeter determine if 240VAC is actually getting to the water heater. Take care here - a defective circuit breaker can give a false 240 volt reading - check for the 240 volts across the upper element (i.e. when the 240 volts has a live load on it, not just an open circuit test).
Also, remember, the upper element has priority over the lower element, and if the water is cold, the upper element will try to turn on and this locks out the lower element (only one element is allowed to heat at any given time). The lower element comes on ONLY after the upper thermostat is satisfied. Therefore if the upper heating element is burned out you will never get any hot water. If you suspect this, TURN OFF THE POWER TO THE HEATER and take a resistance check of the upper element.

Nov 15, 2008 | Water Heaters

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