Question about Rheem Tankless Hot Water Heater Rtg-74pvp-2 7.4 Gpm

3 Answers

Code C7 76 falshes

Someone has stated above that checking the wires from the remote to the unit will solve this. I have not done this yet, but can't imagine after 3 years of use, the wires "all of a sudden" go bad. It seems to be a speratic problem. Shutting the unit off, and then on again seems to fix it for a while. Does anyone know a another reason this might happen? Thanks in advance for your help.

Posted by on

3 Answers

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 2 Answers

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.

Posted on Oct 31, 2009

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

I have the same issue. I spoke with Paloma tech support dept - 800-432-8373 and he explained this is a communication error. It is getting to cycle 7 and stopping (C7). The fix unfortunately is a new motherboard (PCB). I was able to provide him with my serial/model number (you need to have this info) and they are shipping 1 to me because on warrenty. I have nto received yet, but it is a do it yourself fix - so we will see.

Posted on Oct 19, 2009

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 117 Answers

The PCV board could be shot call rheem to have them run you through a diagonsis

Posted on Oct 03, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

What is error code 76 on a Rheem tankless hot water heater that has propane connection?


Communication Fault with Remote Control. At a minimum check the following: 1. Check remote control wiring for loose or damaged connections. 2. Bypass remote control cable by connecting remote control directly to remote control terminals on PCB. Replace cable if found to be faulty. Yes Either the wiring or the remote control is at fault. To rule out the wiring, disconnect the remote control and use a short, good jumper wire and connect directly to the remote terminal on the PCB. If the unit works using the remote, then the wiring is at fault. If the unit does not work, then the remote is at fault. Did the unit go to main burner? No Replace the Printed Circuit Board Remove remote control wires from wiring terminal on the PCB. Plug unit in and open a hot water source.

Dec 16, 2016 | Rheem Water Heaters

1 Answer

Error code tankless gas


E2 is a cold water inlet temp sensor. Has your unit experienced any freezing conditions? If it senses below 36 degrees or above 90 degrees it will show this error.

If its normal temp, and you still get this error...check your sensor. Its an 8(kohm) sensor. Make sure its not open. If it reads ok and your temp is not an issue, then you probably have a bad control board

Dec 15, 2013 | Bosch AquaStar 2400ES-NG

1 Answer

Getting a f76 code on model # ncc-199 sv


F76 is usually a communication error between the remote and the heater. you may have just unplugged something inside the unit while it had power (don't do that). Just unplug the unit from the wall (or flip the breaker) and wait 10 sec and plug it back in again and the problem should fix itself. Otherwise there my be a loose wire going to your remote. In which case, try unplugging the remote and unit for 10 sec and plug the unit (only) back in with the remote disconnected. run your hot water and see if it works. if so it could be a problem with the remote or its wiring.

Dec 08, 2013 | Noritz Water Heaters

1 Answer

I have a poloma model/ pt62-42pvn its flashing error code c4 76 i have had no hot water for six days now need help


1) Before calling service technician who can test parts, open following link for Rheem resources including error codes, Rheem chat and phone number, possible manual:
If local technician cannot solve problem, Rheem can probably recommend a person.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

2) Error codes are start-point for troubleshooting.

3) Multiple error codes can indicate PC board failure.
If your computer motherboard fails, most people feel the computer is compromised even after motherboard replacement.

4) Error code C7-76 is communication error with remote, and can include bad remote, bad wire to remote, loose wire, or bad PC board.
http://waterheatertimer.org/pdf/Rheem-error-code-C7-76.pdf

5) Error C4-13 can include part failure, vent problem, oxygen depletion, and can also include PC board failure.
http://waterheatertimer.org/pdf/Error-code-13.pdf

6) Tankless routine maintenance manual:
http://waterheatertimer.org/pdf/Tankless-maintenance.pdf

7) Some posts about tankless concede that qualified technician was unable to repair unit.
Solve most tankless problems yourself, same day, for about $350.
http://waterheatertimer.org/How-to-install-gas-water-heater.html

8) Take a moment and rate answer:
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.

Sep 08, 2011 | Rheem Paloma Tankless Water Heaters...

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

Remote control error code is C7 or CF, What does this mean?


Hi Bob, sorry for the problem.

Error codes are a starting point for diagnosing problems, and the same error on one machine can have different cause and solution than another machine.
Open following link for Rheem troubleshooting resources that will be handy to keep on file.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Generally C7 is remote cannot communicate with tankless unit.
Your remote is connected by wire back to the heater.
You can turn power off, remove remote wires from connection terminals on tankless, turn power on, check if tankless works correctly.
If tankless works, then problem is the remote control, or wiring, or parts inside tankless.
Chances are good, the wires are not the problem.
New remote costs $99, but that may not be the problem, so instead of guessing, you should call a service technician.
Steps above could restore functionality and water heater will produce hot water at default temperature.

Also read manual for advisories, troubleshooting error codes, and required maintenance.
For example water filter should be cleaned monthly and heat exchanger de-limed yearly.
Tankless are maintenance heavy, and parts and service combined with maintenance makes these units a risky investment compared with expected $1-8 monthly savings from owning gas tankless.
Reading the manual can save some expense, and the link above is a good resource for people wanting to hold down costs.

Repair most tankless problems yourself, same day, any brand for about $330.
http://waterheatertimer.org/How-to-install-gas-water-heater.html

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.

May 15, 2011 | Rheem Tankless Water Heater Main Remote...

2 Answers

CODE C 4776 COMES ON DISPLAY AND UNIT SHUTS DOWN HOW DO I FIX THIS PROBLEM


Check the gas inlet pressure as I am guessing this is an LP unit. Most of these problems come from a poor installation. Gas pipe too small, gas pressure too low, not enough combustion air. The other cause of error codes is a unit plugged into an extension cord. Also, if the flue is not installed properly, condensation can come back and damage the unit.

Apr 04, 2010 | Rheem Tankless Hot Water Heater...

2 Answers

I am getting error code C7 76 on model RTGG 53DVN


is a connection between your controller and the unit disconnect the controller and see if it runs if not then it could be the PCB board. check your wires for bad connections on the remote as well

Jun 27, 2009 | Rheem Tankless Hot Water Heater...

1 Answer

I keep getting error code c4 76


You are having a communication fault with remote control...........#1...Check remote control wiring for loose or damaged connection. #2-Bypass remote control cable by connecting remote control directly to remote control terminals on PCB. Repalce caable if found to be faulty #3- Repalce remote control and #4- replace the PCB. These are items connected to your problem....it may be anyone of these....Good Luck

Apr 11, 2009 | Rheem Tankless Hot Water Heater...

1 Answer

No hot water from tankless water heater. Bliniking Readout


http://www.rheemtankless.com/content/tankless/rheem/help.shtml

This is there website.Above.
Use the live chat to ask them, the code you listed does not seem to correspond to there code list, the only code that does is code 76,
which is a problem with the remote control not talking to the unit.
So your best bet is to tell them the error.

Apr 07, 2009 | Rheem Tankless Water Heater Main Remote...

Not finding what you are looking for?
Rheem Tankless Hot Water Heater Rtg-74pvp-2 7.4 Gpm Logo

Related Topics:

1,151 people viewed this question

Ask a Question

Usually answered in minutes!

Top Rheem Water Heaters Experts

Donni Steen

Level 3 Expert

659 Answers

gizmonix

Level 1 Expert

13 Answers

Brad Brown

Level 3 Expert

15478 Answers

Are you a Rheem Water Heater Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...