Rheem 65 GAL ELEC Water Heater 6YR Self Clean 82V662 - Answered Questions & Fixed issues

Disconnect(turn off the breaker) the electricity from the unit. There is a short that will cause a fire. Cause of the short will require investigation

The way it is designed on the water inlet it is supposed to cause the water to swirl around the tank wall to help keep sediment from building up. I would still recommend draining and flushing every couple of years if your water has a very high mineral content. Thank you.

65 gallon water heater should fill more than 1 bathtub since typical bath only uses 12-14 gallons hot water. First hour delivery on your tank should be greater than 60 gallons.
http://waterheatertimer.org/Hot-water-use-chart.html

Since you have such a small amount of hot water, it sounds like bottom element is burned out, or one of the thermostats is bad. There are two thermostats, and two 4500 Watt elements on 65 gallon tank.
If upper element was burned out, or water heater was not getting 240V electricity, then you would have NO hot water. So we know upper element is good and circuit is good.

Ordinary tank-type electric water heater is fully repairable by homeowner and parts are available at hardware or home center.
I suggest taking 30 minutes and doing troubleshoot before replacing any parts.
Buy cheap multimeter from home center.
When testing voltage, rotate multimeter dial to 240-250-277 VAC
When testing elements or continuity, rotate dial to Ohms.
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

Add a comment for more free help. I can answer questions as you fix the water heater.
Also take advantage of fixya phone service.
For a price, fixya expert speaks with you over phone while you work on heater.

You can find age of water heater from serial number located on label on side of tank.
Label also shows tank size, and tank wattage and element wattage

http://waterheatertimer.org/Figure-Volts-Amps-Watts-for-water-heater.html
http://waterheatertimer.org/Water-at-bottom-of-water-heater.html

Serial number decoder:
http://waterheatertimer.org/pdf/WaterHeaterSerialNumberDecoder.pdf
For example Rheem serial number 0790...
First 2 digits are month 07 July
Next two digits are year 1990

Rheem site does not show 81v40d
http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

The red reset button will be on the upper thermostat , behind the top cover, if you push it and it clicks, the water will start to heat, but you are not out of the woods the upper thermostat must be replaced. Easy job, turn off the power and take a digital picture of the wiring, remove the old one, only has two clips at the bottom that hold it to the tank, do not bend these just spring them out far enough to get the part out. When you put the new one in make sure it is pushed tight against the tank, and there is nothing between the two. Rehook the wiring and turn the power back on.

There is a thin plastic fill pipe in every storage water heater. Its where the cold water is fed in from the top... it travels the entire height to the bottom, as hot water sits on top. There is likely a crack in that tube. It is replaceable, but it is a very big nuisance depending on the size of your tank.
If thats not it, its potentially a weak high limit. Which shuts the tank heat off and never lets the tank reach it optimal temperature.

make sure it is wired correctly, check circuit breaker, check breaker built on to element. If all fails, and it is determined your not getting power to it, you may need a electrician. Be careful. good luck.
Steve

I got a new Rheem heater and it's complete garbage. No water pressure.

recently installed?

Brian sounds like it's Leaking From Anode rod.... Check here.... https://lildutchuncle.com/rheem-water-heater-leaking/

The three most common reasons for this happening to you are 1) a defective gas valve, 2) a rusty thermopile, and/or 3) the automatic shut-off not working as it should. So, the most common reason for many people having this problem stems from having a gas valve that is not working as it should. When your gas control valve is faulty, it will mean that your burner is not going to be igniting as it should-or at all. Something that worked for me one time was to turn the Temp all the way down then all the way to Max a couple of times..gradually. Why it worked I don't know. Got a couple more years out of it though. Good luck! Best to you.

there is pressure adjustment, just temp. water pressure in + water pressure out

I don't know for sure but look at page 117.... http://snowcrest.net/thriftysupply/pdf/RTG-Service-Manual-REV-2.pdf

Rheem furnace error code 68 is a mechanical relay system which signals the blower motor to stop because it has not received a signal from the thermocouple. Jul 20, 2022

Rheem furnace error code 68 - HVAC Contractors

Motor Power And Communications Issues (Fault Code "68")

ManualsLib https://www.manualslib.com > Rheem-96v-Series Motor Power And Communications Issues (Fault Code "68"); Line Voltage And Low Voltage Connections To The Communicating Motor - Illustrations - Rheem 96V Series ... ..

The burner cover plate for your Rheem RRNL-B030JK08E unit can be obtained from an authorized Rheem dealer or distributor. You can visit the Rheem website to locate a dealer or distributor in your area. Alternatively, you can contact Rheem customer service for assistance in obtaining the burner cover plate. Be sure to have the model and serial number of your unit available when contacting Rheem customer service.

this from Rheem error codes Error Code 60 FAULT = Hot Water Temperature Abnormality

1. Press the Power button to clear the Error Code. If Error happens again:
2. Ensure water heater inlet and outlets are open and water is supplied to the water heater.
3. If Error happens again:
4. Ensure water heater inlet and outlets are open and water is supplied to the water heater.
5. Check the pump operation.
6. If it doesn't work, ensure wiring connections to pump.
7. If even supply power to pump and doesn't run it, replace the pump.
8. If Error happens again:
9. Verify recirculation loop length is within specification. Air purge is not enough.
10. Too much restriction on recirculation loop.
11. Return loops are clogged.
12. Check the recirculation loop condition.

https://parts.rheem.com/contactus .

Hi, From what I'm seeing this means that there is a bad part within your furnace and it needs to be replaced. It might be the thermostat. You might need to reach out to a local HVAC company to diagnose the issue in person. Thank you.

https://www.youtube.com/watch?v=u6w88TXMbg8

the gas valve can be replaced, but you will have to pay for installation. this is not a DIY. You can throw money and parts at it. Personally I've replaced my water heater at the first sign of problems. Are they inexpensive no If you furnish model number I can look further.