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

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Error 82 appearing after replacing motherboard

Was receiving an error code of c4 76. Called Paloma and they shipped a new motherboard to me after saying the controller and motherboard weren't communicating. Have installed new motherboard per provided instructions and am getting an error code of 82. Not certain what to do, and it's now after hours at the call center. Advice anyone?

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  • 117 Answers

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

Posted on Aug 02, 2009

  • KevinGC Jul 14, 2011

    I did the same thing, I am in Florida, no altitude problem, fuel type is lp, does the new motherboard need to know fuel type?

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1 Answer

Error Im getting is C8 82


Before calling service tech, copy following link for Rheem-Paloma troubleshoot resources:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
C8 is usually the PC board, or could be failed gas solenoid valve.
82 is gas-type-data-failure = program PCB for proper gas type, or proper altitude above sea level.

If this is new installation, Rheem-paloma might tell you to contact the installer.
If this is older tankless that worked before, then things point to failed PC board. Rheem-paloma may send you new PCB for free if unit still under warranty period for defect parts.

Rheem does not post service manuals, but will send instructions.
Hopefully the success rate for replacing your main PC control board will have better outcome than expected when replacing motherboard on your computer.
Perform regular maintenance to avoid some common error codes.

Aug 16, 2012 | Rheem Paloma PTG-74PVN / RTG-74PVN...

1 Answer

Getting a error code C2 82 on PTG-42PVN / RTG2-42PVN Natural gas indoor


This error code will occur for two reasons:

1. The heater has lost its programming and you will need a new programming chip from Rheem. (866) 720-2076
2. The igniter module is located behind the Printed Circuit board and will need to be relocated.

Apr 10, 2012 | Rheem Paloma PTG-42PVN / RTG2-42PVN...

1 Answer

C4,76 what is it?


Before calling service technician, open following link for Rheen troubleshooting resources and possible error code help plus link to Rheem chat:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Typically, error codes are start-point for troubleshooting.
Error 76 is communication fault with remote control, which can be bad remote, bad wire, bad wiring connection, or bad part inside tankless.
C4 is oxygen sensor problem or bad venting.
More than 1 error code, or mixed error codes can indicate problem such as bad PC board -or- PCB.

Jun 23, 2011 | Rheem Tankless Hot Water Heater...

2 Answers

Getting a 76 flashing on my Paloma PTG-74XP tankless water heater


Error code 76
http://waterheatertimer.org/pdf/Rheem-error-code-C7-76.pdf
http://waterheatertimer.org/pdf/Rheem-Tankless-Fault-codes.pdf

Open following link for Rheem/Paloma/Richmond/Ruud tankless troubleshoot resources including error codes, self help, manuals, parts links, tips, and contact information.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Read manual cover to cover, make sure tankless receives yearly maintenance as outline in manual.

Add a comment with your experience so others with same-similar problem can benefit.

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.

Mar 30, 2011 | Rheem Paloma PTG-74XP / RTG-74XP Liquid...

1 Answer

My tankless indoor water heater has an error code C4 76


Error code 76 indicates a communication error with the electronic board and the unit. Call Paloma/Rheem with the serial number and model number of your unit and they will, in most cases, send you a new board with instructions on how to easily replace the board.

Tech Support: 800-432-8373.

Nov 21, 2010 | Rheem Paloma Tankless Water Heaters...

2 Answers

I have a Rheem tanklees water heater, model RTG-74XN-2. The remote shows the following error code. C4 then the number 76 then C4 then 76. What does this code mean??


Contact Paloma/Rheem 866-720-2076. Super nice! I just called regarding mine. Having same problem Rheem Paloma sending parts out tomorrow overnite. Try turn it on/ off by moving tiny switch under the unit that tells you the temperature. Run your fingers along the bottom to find it. That is a temporary fix. Below is a website with all the error codes, so you know what is wrong. Good luck and blessings!

http://www.palomastore.com/paloma_error_codes.html

76
Communication Fault with Remote Control Check remote control wiring for loose or damaged connections. Bypass remote control cable by connection remote directly to remote control terminals on PCB (replace cable if found to be faulty). Replace remote control. Replace PCB

76
Communication Fault with Remote Control Check remote control wiring for loose or damaged connections. Bypass remote control cable by connection remote directly to remote control terminals on PCB (replace cable if found to be faulty). Replace remote control. Replace PCB

76
Communication Fault with Remote Control Check remote control wiring for loose or damaged connections. Bypass remote control cable by connection remote directly to remote control terminals on PCB (replace cable if found to be faulty). Replace remote control. Replace PCB

76
Communication Fault with Remote Control Check remote control wiring for loose or damaged connections. Bypass remote control cable by connection remote directly to remote control terminals on PCB (replace cable if found to be faulty). Replace remote control. Replace PCB

Nov 06, 2010 | Rheem Paloma PTG-74PVN / RTG-74PVN...

1 Answer

I also a Paloma tankless water heater that is 2 years old. I am now getting an error code C7 76 also. Is this something I can take care of, or should I call a plumber to address?


Remove power source from the unit. If remote control is installed; remove cover and lift the control wires on the terminal...can be accomplished from either end.

Restore power and see if unit functions normally.

Contact Paloma/Rheem customer (800-432-8373) support and notify them IF you are getting a code "76" error. Rheem has recently extended the warranty on the "Burner Control Assm."; which is your problem. The C4-C8 portion of the error code, is where the unit stops the ignition process...burner fails to light, or gives you intermittent hot water. In either case, contact customer support .

If this helps, please indicate so.
Mike//jzklipper

Nov 16, 2009 | Rheem Paloma PTG-74PVN / RTG-74PVN...

1 Answer

I am getting error code -0 and 82 PTG-74PVN


Remove power, disconnect remote terminal. Restore power, open a hot water valve and see if you get any hot water.

HTH,
Mike

Nov 15, 2009 | Rheem Paloma PTG-74PVN / RTG-74PVN...

3 Answers

Code C7 76 falshes


I had the same problem. Rheem/Paloma tech support 1-800-431-1549 checked the error codes and sent me a new motherboard next day air. Since I stil needed hot water, I disconnected the remote control from the heater and it worked fine (just turn power off on remote, open front door of unit and unscreww/disconnect the 2 wires coming from the remote). The motherboard arrived and I installed and it works fine. However, you will need 1 person working on unit and one reading the codes/numbers on the remote (my unit is outdoors and the remote display is indoors, so it was not a 1-person job). Tech support was very helpful.

Oct 02, 2009 | Rheem Tankless Hot Water Heater...

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