Question about Rheem EcoSense by 7.4 GPM Outdoor Tankless Water Heater Natural Gas

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My pilot light keeps going out on my ecosense by RHeem 7.4. Any reason Why?? I get a "C2" error message on my display??

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Heres the link for that water heater from Rheem
http://www.rheemtankless.com/content/resources/documents/tankless/ErrorcodeTroubleshooting.pdf
click on this and it should help in the trouble shooting of your problem.

Posted on Jan 21, 2009

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1 Answer

Error code c7 and 12 on an ecosense natural gas water heater


Before calling service technician, copy following link for ecosense tankless troubleshooting resources.
C7 is communication failure with remote, and C12 is flame failure.
Multiple error codes could mean bad circuit board, loose wire, low gas pressure, or simple communication problem with remote control.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

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I am getting a C2 11 code on my eco sense tankless water heater. There is also a flashing 24, any ideas? Thanks


Multiple error codes can mean PC board failure.
C2 11 is no ignition.
Error 24 is malfunction of operational switch: "press max or mim button on PC board, or replace PC board." On some models, max and mim button can be located just above dip switches, and rotates with screwdriver. See diagram in manual.

Before calling service technician, open following links for troubleshoot resources including error codes, Rheem chat, and possible manual.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/pdf/ErrorcodeTroubleshooting.pdf

Aug 10, 2011 | Rheem EcoSense by 7.4 GPM Tankless Water...

2 Answers

We are getting multiple codes. Can someone help us. Last year we got cod c2 11 which we found out we just have to clean the probes in the unit. So we did that yesterday again and everything worked great,...


Rheem, Richmond, Ruud, and Paloma are all the same manufacturer. After about 9 months, my tankless RTG-74PVN started giving me error code 11 and cold water!. I fixed it by cleaning the burner, as shown in this video:
www.howtolou.com/clean-a-burner

Jul 31, 2011 | Rheem EcoSense by 7.4 GPM Tankless Water...

1 Answer

Have an Ecosense Tankless Water Heater with error code C7. It then flashes to 76 degrees and gives cold water. How do we remedy?


Before calling service technician, open following links for troubleshooting resources and typical manuals.
http://waterheatertimer.org/pdf/Rheem-error-code-C7-76.pdf
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Tankless water heaters require yearly maintenance.
Many causes for common error codes are covered in the yearly maintenance.

Jul 18, 2011 | Rheem EcoSense by 7.4 GPM Tankless Water...

1 Answer

How can I tell how many BTU's my natural gas meter is rated to supply? I'm getting an error code 12 on my Rheem EcoSense 9.5 GPM 199,900 BTU Natural Gas Indoor Tankless Water Heater, so I'm guessing the...


I have a Rheem PTG-74XP tankless. I had the same code 12, low/inconsistant gas problem (assumption). In my case the gas (propane) pressure coming in was fine, the reason the flame rods/electrodes would not burn correctly was residue on/in them. It hasn't happened since they were cleaned. Hope this helps, dj :)

Feb 03, 2011 | Rheem EcoSense by 7.4 GPM Tankless Water...

1 Answer

I have a natural gas eco Sense tankless hot water heater.I will turn it on and it will work fine. then I shut it off and if I turn it back on I will get an error code c2 will blink then 11. I will then...


try cleaning your spark rod inside the unit and the other rod next to the spark rod on the side of the unit. Takagi use a emery cloth, rheem brass brush, noritz a emery cloth. but make sure that both of the rods that are in the flame chamber are very clean. It miss reading because of build up on the rods.

Oct 05, 2010 | Rheem EcoSense by 4.2 GPM Tankless Water...

1 Answer

I can't get my pilot light turned on. I have a Rheem powervent water heater and I can't turn it on. I keep getting an error message that says "FVD interface failure/miswiring". What do I have to do to...


Hello,
Most likely your flame sensor wiring is partially burn't or has an open circuit fault that's giving you the error message. This wire starts at the gas control and ends next to the pilot assembly. It can easily be replaced using a small wrench to unscrew the end connector from the control and the flame sensor rod at the pilot assembly. Call Rheem and see if the water heater is still under warranty, but even if it isn't they can most likely order the part you need for you. The phone # is on one of the data decals on the side of the water heater tank. They will need the model # and serial # to order the part. Be sure you unplug the unit before working on it! Douglas

Sep 28, 2010 | Rheem 50 Gallon FVR NATGAS Water Heater...

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We keep getting c2 and 11 error messages and no hot water


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1 Answer

What does it mean when your tankless rheem waterheater read c2 11


globalimageserver.com/fetchDocument.aspx?id=4414425e-7e4b-4994...
manual above.

Apr 27, 2010 | Rheem EcoSense by 7.4 GPM Tankless Water...

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