Rheem 82v40-2 is not working - Rheem 82V40-2 Fury Electric Residential Water Heater, 40 Gal

http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html

http://waterheatertimer.org/How-to-light-gas-water-heater.html

Rheem does not post service manuals.
One reason is that water heaters have changed rapidly last few years, and same model might have different features because Rheem experiments to see which products work after they are sold.

Calls to Rheem for DIY help are largely useless since they want you to call local installer or technician... who will sell you a new heater for more money.
Rheem wants to end DIY repairs since doing it yourself saves you money... which means Rheem, and Rheem-loyal service companies make less money.

http://waterheatertimer.org/Which-is-best-gas-water-heater.html
http://waterheatertimer.org/New-government-water-heater-standards.html

Gene

New government water heater standards

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Any generic element will work.
Match wattage with current element.
http://waterheatertimer.org/How-to-replace-water-heater-element.html

http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html#parts

Rheem wants folks to buy parts from them... so Rheem tries to convince people that Rheem electric water heaters require special parts.
This is not true... ordinary generic parts will function fine on Rheem.

Gene

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Yes.
Default temperature will be 120 degrees F
Of course the tankless still needs to be plugged into a wall outlet.
Copy following link:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html#remote

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Rheem wants customers to call trained service technician since error codes are start-place for troubleshooting, and problems can be combination of issues.
Risk of CO poisoning from improper vent, or clogged drain line causing damage to heat exchanger, and risk of homeowner working on complicated gas-burning appliances are reasons why Rheem instruction manuals recommend yearly maintenance by trained technician.
That maintenance would typically cover most common error code issues, and homeowner could gather tips and information from service tech.
Open following links for Rheem troubleshooting resources:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/pdf/Error-code-13.pdf

That is good technical question for Rheem.
Open following link for Rheem tankless resources including chat, possible manual, and typical service manual.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

May 2011. If you find exact information from Rheem, then add a comment to this thread so others with same question can find possible answer.

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Before calling service technician, read manual for troubleshooting and yearly maintenance requirements.
Open following links to identify same-similar product and download manual.
Once you have product showing on page, click 'specs-docs' tab to see use-and-care manual.
http://www.rheem.com/product.aspx?id=C24E3F52-A6A4-4BC7-AF5B-0DF23A7A0263
http://www.rheem.com/Products/tank_water_heaters/gas_water_heaters
http://globalimageserver.com/fetchDocument.aspx?id=c0471d58-5e59-4be6-96f7-68361b8fb515
Rheem site loads slow, and some manuals never load.
Typical power vent manual:
http://waterheatertimer.org/pdf/Rheem-power-vent-manual.pdf

I believe the 21VP is older and Rheem does not show older manuals, but manuals are generally generic enough to help greatly. Year of manufacture show as second and third digit of serial number.

Lockout condition requires service technician and part replacement, or call Rheem and have them send part.
I found one link that talks about FV lockout that may or may not pertain to your issue:
http://www.diychatroom.com/f7/rheem-hot-water-heater-pilot-burner-not-staying-lit-65755/

just clean shower head or faucet with CLR to increase water flow. I have same problem

Resourceful do-it-yourselfer will find following links valuable

1) C11 is 'no ignition'
Check following link for Paloma error codes:
http://www.palomastore.com/paloma_error_codes.html
http://www.palomatankless.com/owners/homeowner+trouble.lasso

2) Rheem offers on-line chat, which you rarely see for typical tank-type water heater
http://www.rheem.com/products/tankless_water_heaters/customer_support/

3) Typical Rheem manuals
http://waterheatertimer.org/pdf/DirectVentManualRTG-74PVN-1.pdf
http://waterheatertimer.org/pdf/TanklessOutdoor_95_84_64X_UC_AP15318.pdf
http://waterheatertimer.org/pdf/Rheem-RTG74IndoorOutdoor_owners.pdf
http://waterheatertimer.org/pdf/RHRheem-Hvy-Dty-IndoorOutdoor.pdf
http://waterheatertimer.org/pdf/Tankless_Condensing_AP15896.pdf

4) Rheem site where you can find and download your manual if it shows
http://www.rheem.com/hrc.aspx

5) Check following link for recall list:
http://www.tankless-recall.com/tanklessSearch.aspx

6) Contact Rheem
http://www.rheem.com/Contact.aspx

7) Search Fixya for Rheem questions and answers
http://www.fixya.com/tags/rtg_74pvn

8) Post question on pro water heater forum: This is where I go to catch up on always-evolving water heater industry.
http://www.thetankatwaterheaterrescue.com/forums/forum3/

9) Install DIY tank-type gas water heater and avoid the whole headache
http://waterheatertimer.org/How-to-install-gas-water-heater.html

10) Add a comment for more free help.
Also take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Richmond is Rheem.
Following links are meant to assist resourceful do-it-yourselfer solve long term maintenance issues that tankless pose.

Error 76 is communication fault with remote control.
Check following links for Paloma 'Rheem" error codes:
http://www.palomastore.com/paloma_error_codes.html
http://www.palomatankless.com/owners/homeowner+trouble.lasso

Best place to start is your manual. Following link show typical Rheem manual with the words troubleshoot and maintenance throughout manual.
Read manual several times before buying product to see yearly maintenance requirement and complexity of tankless water heaters.
http://waterheatertimer.org/pdf/Rheem-RTG74IndoorOutdoor_owners.pdf

Rheem offers on-line chat, which you rarely see for typical tank-type water heater
http://www.rheem.com/products/tankless_water_heaters/customer_support/

Contact Rheem: they will usually kick you back to local service technician.
http://www.rheem.com/Contact.aspx

Check following link for recall list:
http://www.tankless-recall.com/tanklessSearch.aspx

Rheem website is not easiest to navigate, but manuals appear for current models.
http://www.rheem.com/products/tankless_water_heaters/

Read other Rheem questions at fixya to gain wider experience with potential problems and solutions.
http://www.fixya.com/tags/rtg_74pvn

Install DIY tank-type gas water heater and avoid the whole headache
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Post question on pro water heater forum: This is where I go to catch up on latest info in fast-evolving water heater industry.
http://www.thetankatwaterheaterrescue.com/forums/forum3/

Pay for answer at fixya:
Also take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

1) Rheem offers on-line chat, which you rarely see for typical tank-type water heater
http://www.rheem.com/products/tankless_water_heaters/customer_support/
http://www.rheem.com/hrc.aspx

2) Call local service technician, and put that person in your rolodex-wallet for future help.
Ask technician for tips and tricks for keeping unit working and needed maintenance.
They will gladly offer a yearly service.

3) Read manual several times to get accustom to yearly maintenance required for tankless water heaters. Tankless water heaters are maintenance heavy. All costs are energy.

4) Read manual several times and notice word troubleshoot appears many times.
Since tankless are complicated machines, many internal and external factors can affect operation, especially as unit ages.

5) Look at label on unit to identify exact product number. Identify same/similar product at Rheem, and become familiar with Rheem website
http://www.rheem.com/products/tankless_water_heaters/

6) Read other question/answers at fixya about Rheem tankless to become familiar with the tankless era
http://www.fixya.com/tags/rtg_74pvn

7) Install DIY tank-type gas water heater and avoid the whole headache
http://waterheatertimer.org/How-to-install-gas-water-heater.html

8) Add a comment for more free help.
Also take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.