Question about Rheem 81VP6S/430126 Water Heater

2 Answers

I have a Rheem Model # 62SV-520 and I loose hot water after about 10 minutes in the shower. I think one of the heating elements is bad, but if so, which one.

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2 Answers

You have electric heater with 2 elements.
This is a 240Volt heater

Lower element is suspect.
If some hot water is available, then upper element is working.
If upper element is not working, then water heater has no hot water.
That because of the way thermostats work.
http://waterheatertimer.org/How-electric-water-heater-works.html

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

How to replace element and clean sediment out of tank:
http://waterheatertimer.org/How-to-clean-sediment-out-of-electric-water-heater.html

The problem can also be bad thermostat, or loose wire >> these things are generally easier to repair than replacing element.
Take 30 minutes and do complete troubleshoot.
Buy cheap multimeter from home center.
When testing voltage, rotate multimeter dial to 240-250-277 VAC
When testing elements or continuity, rotate multimeter dial to Ohms
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

Posted on Jan 03, 2011

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  • 27 Answers

There performance depends on your demand. If you are using an energy saving shower head I would expect you to have enough hot water for easily a couple of showers. But, if your using the "power flush" type shower heads that use 3.5 gpm or more, the 40 gallon heater is not enough. Also, consider type of water your heating. Is it well water or municipal. Unsoftened well (this includes some municipal well supplies too) water causes hardness ions to cake the heater element making them less efficient. If you have the low flow shower, it is likely you have an element burt out. They can simply be replaced and picked up at any big box store for less than $20 dollars. Each element can be tested in place with a continuity tester. If your not sure how to test, but would be willing to replace the elements - replace both of them. You will have to shut off power to heater and drain tank completely before removing elements. Replace elements with same wattage or higher. Most have two 2250 watt elements for a total of 4500 watts. you can easily install two 3000 watt elements and have a quicker recovery rate and more hot water than ever.

Posted on Jan 03, 2011

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2 Answers

Rheem serial R0996B30824 Model 7130S in MFG Home 40 gal how old and why does hot water run out after one shower . Just bought modular home need help


If the water heater is electric; BE SURE AND TURN OFF THE CIRCUIT BREAKER TO THE WATER HEATER, DOUBLE CHECK THE VOLTAGE AT THE WATER HEATER WITH A MULTIMETER BEFORE DOING ANYTHING ELSE!

Here's a good video on how to test the heating elements.


To check the reset button.


To check the thermostat.

Nov 27, 2016 | Rheem Water Heaters

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Electric shower just installed cuts out at fusebox after being on for about a minute


10-20-12
Circuit breaker is tripping on electric shower?

This could be absolute danger until more information is known.

1) Breakers trip because they sense heat, because the wire size is too small, or breaker size is mismatched with wire. Or breaker is loose on busbar.
Copy following links to determine correct wiring and breaker:
http://waterheatertimer.org/Color-codewire.html
http://waterheatertimer.org/How-to-wire-Tankless-electric-water-heater.html

GFCI circuit breaker will trip because of same heat condition described above, and also trip if ground fault is detected.
Water leaking into element will trip GFCI.
Absolutely you need to get this problem fixed before shower is put back into service.
Call electrician, or the installer, or the manufacturer, or all.
http://waterheatertimer.org/How-to-wire-GFCI.html#spa

Oct 18, 2012 | Rheem EcoSense by 7.4 GPM Tankless Water...

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I have a model number 101160 manufactured in 1994. When showering I am using LESS cold water to maintain a reasonable showering temperature. If a tempeature adjustment is required, how do I adjust the...


Water heaters by Rheem have not changed that much over the years. the link below will give you some good information about electric water heaters in general. As water heaters age, the heating element will lose efficiency due to deposits and general build-up of minerals in the tank. Turning up the temp may not be a good idea since the problem is actually caused by a coating on the element. Also make sure that cold water is not bleeding into shower valves thru other single lever faucets. While shower is running, listen to and feel the water lines connected to sink faucets in other rooms for water transferring thru valve. You can actually hear water running at faucet while shower is on if faulty. If other vaucet valves are leaking thru, repair those first before you do anything to the water heater as that is cause of loss of hot water. Good luck.




http://www.rheem.com.au/images/pdf/owners_dom-elec_121996C_0707.pdf

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1 Answer

Rheem 49 gal model 81V400B - hot water lasting only 5-10 minutes then takes an hour to heat back up.


Ordinary tank-type electric water heaters are fully repairable by homeowner.

A) Basic info on Rheem
Rheem electric water heater website:
http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/
Find age of Rheem: look 2nd and 3rd digit of serial number, for example 06 is 2006

B) Water heater has some hot water.
That says certain things: upper element is working, water heater electricity is working, reset button is not tripped, and heater is not experiencing run-away overheating event.
http://waterheatertimer.org/How-it-works.html

C) That leaves 4 suspects that cause lower amount of hot water.

1) TP valve is running hot water out of tank -or- leaking faucet is running hot water out of tank.
Check for leaks
http://waterheatertimer.org/How-to-replace-TP-valve.html

2) Lower element is burned out.
Test lower element using inexpensive multi-meter from Home Depot.
http://waterheatertimer.org/How-to-test-water-heater-element.html
Replace element with same wattage shown on label, and clean out sediment:
http://waterheatertimer.org/How-to-clean-sediment-out-of-electric-water-heater.html
http://waterheatertimer.org/Clean-sediment-out-of-water-heater.html

2) Upper or lower thermostat is bad.
Replace both thermostats for about $25.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

3) Burned or shorted wire located between upper and lower sections of tank.
Turn off power. Open covers on side of tank. Remove insulation. Inspect parts for signs of high heat and burning. Especially check lower element. Tighten any loose wires. Replace part that shows signs of burning.
Put insulation and cover back over thermostats so cooler outside temperature doesn't cause thermostat to misread tank temperature.
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.

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one element is off peak and one is boost could be thermostat or ripple controller in fuse box or one dead element

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Not heating water hot enough or as much water.


You probably have a bad heating element. Probably the upper element.

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Warm water only


You can eliminate the shower control knob possibility by turning on your hot water anywhere else in the house. If you get hot water in other places, then it could be the knob causing it. A substantial lime buildup in the tank can also cause poor heat transfer from the elements to the water.

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Not enough hot water


Makes you feel good to save some money right? Have a great day!

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Water is no longer hot


A heating element is either good or bad and no inbetween. If your unit has two elements, then one of the elements is bad. If it is a single element unit then the thermostat has gone bad. Do a voltage check to see if you have power going to both elements and if you do then do a ohms test on the elements. They shoudl read 5 to 10 ohms. If one of them doens't, then you know it is bad. If by chance check the elements and everything is working, the only thing that can be left is that the dip tub has ruptured somewhere close to the top of the outlet. But I would put my money on a bad element.

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