Question about Rheem Paloma Tankless Water Heaters PTG-74PVN Tankless RTG-74PVN

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Our Paloma Tankless Water Heater yesterday was reading error code C4 and 13 and today it is reading C8 and 13 what does this mean and what should we do?

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C4/13 refers to the "flow control valve".
C8/13 refers
the last sequence in the burner ignition.

You should contact Rheem at this link: rheem.com/
or call 1-800-432-8373 and they can recommend a local installer in your area.


Good Luck!

Jim

Posted on Oct 04, 2010

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1 Answer

I have a c8


error C8 on Rheem/Richmond/Paloma tankless?
maybe bad PC board?

http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

gene

Oct 02, 2014 | Water Heaters

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

Paloma tankless water heater model no PTG-74XP-2 error code c8


In several cases i have had to change the pcb board.... code 76 is no communication between remote thermostat and pcb..... this is a problem the first generation rheems seem to be having.... contact rheem if under warranty you will need to get pcb and program chip sent to you. Really need a experienced tech to install board and program it for you...... hope this helps...

Jan 25, 2012 | Rheem Paloma Tankless Water Heaters...

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...

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

C7 andC8 plus 76 flashing on my remote


C7 C8 76 error code, can be PC board fault, and/or communication fault with remote.

Open link to read one possible solution:
http://waterheatertimer.org/pdf/Rheem-error-code-C7-76.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

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.

Dec 16, 2010 | Rheem Tankless Water Heater Main Remote...

1 Answer

Paloma tankless ptg42 water heater error code c4/13


4 error message, the 4th (last) error code is #13, not enough oxygen.

Check the location of the heater, if it is fine the ODS sensor (actually is a thermal couple) is bad.

Dec 25, 2009 | Rheem Paloma Tankless Water Heaters...

2 Answers

PALOMA PTG-74PVN-1 Code C8 12 my water heater


C8 is the last stop in the point of burner ignition and a total of eight error codes. Error code 12 is a supplemental code that means your LP gas supply is too low...have your LP tank service and try again.

HTH,

Mike...

Dec 06, 2009 | Rheem Paloma Tankless Water Heaters...

1 Answer

New Richmond tankless water heater C8 error


I think error code C8 is #13
It has to do with air quality, lack of sufficient air, or lack of venting or dirty air filter.
Check following links to see if they have information:

Check following link for recall list:
http://www.tankless-recall.com/tanklessSearch.aspx
Manual shows error 05 or 13:
http://waterheatertimer.org/pdf/Rheem-RTG74IndoorOutdoor_owners.pdf

Sep 01, 2009 | Rheem Tankless Hot Water Heater...

1 Answer

Paloma PTG 74PVN Tankless Water Heater


did you check the filters on the the water valves, i am not exactly sure about your codes that are shoeing but if you could read it and post them, i know on some of the units 76 means there is low water pressure and the filters are behind 2 caps one on each side above the shut off valve take off the caps and remove the screens, clean them and replace them ,, make sure you turn off the water on both side first or you will get wet

May 18, 2009 | Rheem Paloma PTG-74PVN / RTG-74PVN...

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