Question about Rheem RTG-74PVN-2 Natural Gas Pronto Whole House, Natural Gas, Tankless Wat

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Rheem Pronto Hotwater Heater Error

I received a similar error C7-76. I called Rheem and they're sending me out a new board and chip that according to them can be self installed. Once put in place I have to call them to program the chip. Until then I was told I have no hot water. :(

Thank God for (electric heated) hot tubs!

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Rheem has a lockout release instruction ggogle bypass hard lockout.. You'll get hot water but not for long.. No damage

Posted on Jun 29, 2013

  • EZfixer Jun 29, 2013

    Rheem has a lockout release instruction ggogle bypass hard lockout.. You'll get hot water but not for long.. No damage

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Unplug unit from wall. Disconnect remote wires from circ board, and let unit set for about 5 minutes. plug back in. run water and see if unit comes on.

Posted on Jun 16, 2009

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Manual


Copy following link for Rheem tankless troubleshoot resources, including error codes, manuals, and general information for maintaining your tankless computer that heats water.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
Multiple error codes can indicate failed PC board. Rheem will send PC board... so your computer-that-heats-water might have failed motherboard.
Continual maintenance can help avoid common error codes, but some problems are insoluble and chronic.

Jul 16, 2013 | Rheem RTG-74PVN-2 Natural Gas Pronto Whole...

1 Answer

Error code c4 13


C4 13 is probably PC board failure.
Call Rheem and they will send new PC board.
Or it could be sensor failure, or other cause, but generally PC board.

Imagine if your computer needed a new motherboard. Same with replacing tankless PC board. You would expect your computer to have more problems soon.

Copy following link for Rheem troubleshoot resources:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Sep 26, 2012 | Rheem RTG-74PVN-2 Natural Gas Pronto Whole...

1 Answer

Reheem pronto after ten sec. Of running it flashes error code c4 -76. Need help.


Need new PC board probably.
And/or the required yearly general maintenance.
Unknown if this is new installation, or if parts still under warranty.
Call Rheem with serial number located on side of unit, and they can send PC board.
Copy following link for error codes and possible manual:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/pdf/Rheem-CondensingTankless-maintenance-2012.pdf

Sep 19, 2012 | Water Heaters

1 Answer

Rheem Pronto water heater Error code E1


Before calling service technician, open following link for troubleshoot resources include Rheem chat, error codes, and regular maintenance manual, and possible product manual:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/pdf/Tankless-maintenance.pdf

Clean the water filter as shown in product manual.
Error E1 is not specifically shown for Rheem/Pronto tankless.
1 is usually related to water flow.
E errors are related to temperature, so E1 can be temperature sensor failure on hot water pipe.
E errors can be loose/bad wiring or part failure.

Error codes are considered start-point for troubleshoot.
Each tankless manual recommends cleaning the water filter monthly, deliming heat exchanger yearly, and cleaning combustion chamber and burner parts yearly.
Regular maintenance can prevent most common error codes, but the cost and nuisance will outweigh expected $1-8 monthly savings on gas bill.
The requirement for continual maintenance should signal folks that tankless are not effortless hot water as described in tankless promotion.

Solve most tankless problems same day, yourself, any brand, using minimal tools for about $350.
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Oct 02, 2011 | Rheem RTG-74PVN-2 Natural Gas Pronto Whole...

2 Answers

Error code c7 76 disconnected remote started heater had hot water for a few minutes then back to original problem. No hot water.


Before calling service technician, open following link for Rheem troubleshooting resources, and contact information:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Error codes are considered start place for troubleshooting:
http://waterheatertimer.org/pdf/ErrorcodeTroubleshooting.pdf
Error code troubleshoot indicates: replace PC board if water heater does not function without remote.

Add a comment and say what you did to fix problem.

Jun 15, 2011 | Rheem RTG-53PVN Indoor Natural Gas...

1 Answer

Unit shuts off when in use, code C7, 76


Before calling service technician, open following link for Rheem troubleshoot resources including error codes and typical manuals.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
C7 76 is problem with remote control. Following link might help.
http://waterheatertimer.org/pdf/Rheem-error-code-C7-76.pdf

Read manual cover-to-cover to make sure your tankless water heater receives yearly maintenance required for unit to continue working.
Tankless are maintenance heavy which can quickly eliminate any promised energy savings unless you de-lime and troubleshoot and read tips-and-tricks others have written and glean information from service technician who visits your house. Mostly glean how much tankless repairs and parts cost vrs buying whole new tank-type gas water heater at local box store, since all costs are energy.

Feb 17, 2011 | Rheem RTG-74PVN-2 Natural Gas Pronto Whole...

1 Answer

RTG 74-PVN-2 Rheem tankless water heater. Works fine for a month or so at a time, then I get C2 - 13 error code. Did I hear this model was recalled?


Before calling service technician, open following link for Rheem troubleshoot resources including error codes and typical manuals.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
Recall website:
http://www.tankless-recall.com/tanklessSearch.aspx
Error code C2 13 call Rheem.

Read manual cover-to-cover to make sure your tankless water heater receives yearly maintenance required for unit to continue working.
Tankless are maintenance heavy which can quickly eliminate any promised energy savings unless you de-lime and troubleshoot and read tips-and-tricks others have written and glean information from service technician who visits your house. Mostly glean how much tankless repairs and parts cost vrs buying whole new tank-type gas water heater at local box store, since all costs are energy.

Feb 16, 2011 | Rheem RTG-74PVN-2 Natural Gas Pronto Whole...

1 Answer

Error 82 appearing after replacing motherboard


82 means that your programming on the board isn't correct, check for the right altitude chip and fuel type

Jul 30, 2009 | Rheem RTG-74PVN-2 Natural Gas Pronto Whole...

11 Answers

Paloma tankless, gas, water heater, error code C7 76


If you look on the left hand side of the burner control module you'll see 4 capacitors - the capacitors have most likely failed...pretty sure anything code 76 is P/S failure. It may also be covered for manufactures defects. If the cap is blown..the top will be slightly raised as apposed to flat like the other nearby caps - they are called top blow capacitors...the damage should be evident.

Jul 24, 2009 | Rheem Paloma PTG-74PVN / RTG-74PVN...

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