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

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Paloma tank less water heater flashes code C4 13 and we have no hot water?how to fix it?

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I had the same problem with my Paloma a year and a half after installation...contacted Rheem customer service (800-432-8373) and they recommened a local installer in my area. The technican diagnosed the problem as the "flow control valve"; he managed to get Rheem/Paloma to cover the part under warranty...I only had to shell out the money for the install.

Posted on Nov 17, 2009

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I had same code, tried the flush, cleaned it and still got codes, Rheem has sent me a new burner assembly, since I had it cleaned "professionally for $225) less than a year ago, said the small orifices tend to clog up very easily, this is last $$$ that I put into this unit, it is only 3 years old, going to put a regular gas fired hot water tank back in next time this breaks, I can do this install myself, had to hire plumber at $95 an hour to put burner in

Posted on Oct 23, 2012

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My Paloma tankless heater was shutting down after 4-5 minutes & flashing C7 13. Flushed the heater using white vinegar to remove the calcium deposit. Seemed to have solved the problem. Note: use at least a 100GPH fountain pump to flush the heater. Anything smaller will probably not have enough pump push to get a decent flow through the heater.

Posted on Jan 29, 2012

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I'm gonna put a tank back in NOW and circumvent any more problems.

Posted on Dec 09, 2012

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1 Answer

I have a paloma ptg2-42pvn tank less water heater. I recently installed the remote as the unit quit making hot water. I wanted to see if it was producing a code. The remote is flashing 76 repeatedly. I...


Bad remote control. Bad wire to remote control. Bad PC board.
Copy following link for resources, including older service manual and error codes and rheem chat for ordering replacement motherboard for your tankless computer.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

If tankless computer is 5 years old, then compare that to your 5-year old cell phone or 5-year old laptop, and ask if the chipware still functions or can be repaired to function back to factory fresh expectation.

Later today, install tank type water heater and solve all tankless computer problems with one ez step. Have hot water for shower same day with less maintenance and fewer long-term problems and expense.
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Gene
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Aug 24, 2013 | Water Heaters

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...

1 Answer

I have a paloma tankless water heater, ptg-42pvn. It was flashing, C4, 13 and now it only flashes -0, 13 and will not even turn on. Tried to reset it by unplugging it and it only flashes -0, 13 even...


Multiple error codes can mean different things, including bad PC board.
C2 13 might be the oxygen sensor. -0 and no operation indicates bad board, but other things might be notched into same problem like loose connections.
Error codes are starting point for troubleshooting.
Before calling service technician, open following link for Rheem-Paloma troubleshoot resources including Rheem chat.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-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 28, 2011 | Rheem Paloma PTG-42PVN / RTG2-42PVN...

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

Hi. We have a Paloma Tankless Water Heater model no. PTG-74PVN-1 and we keep getting the error C 7-76 or C 8-76. We cleaned the filter but the problem is not going away. The hot water turns off after a...


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.

Mar 27, 2011 | Rheem Paloma Tankless Water Heaters...

2 Answers

I have a Paloma Whole Home 7.4 GPM Water Heater, it is a propane heater. I bought this heater in 07 and I get the same problem ever year. When the weather gets cold and the water is cold the hot water...


If incoming water is too cold, tankless might not have enough time to heat the water as it flows by insince the heat exchanger.

1) You can passively preheat cold water using staging tank, or tampering tank.
http://waterheatertimer.org/Tempering-tank.html

2) Buy old water heater from plumber that is not rusted out.
Replace anode rod to stop further rust.
Rinse tank with water and hydrogen peroxide to kill bacteria that results from anode rod.
http://waterheatertimer.org/Replace-anode-rod.html
Clean sediment out of bottom:
http://waterheatertimer.org/Clean-sediment-out-of-water-heater.html

3) Don't forget, a tankless heater needs to be de-limed each year, and cannot be exposed to more than 11 grains hard water.

4) Since all costs are energy, when you get tired of messing with tankless.
http://waterheatertimer.org/How-to-install-gas-water-heater.html
http://waterheatertimer.org/images/Compare-water-heater-parts.jpg

Add a comment for more free help.
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.

Jan 18, 2011 | Rheem Paloma PTG-74PVN / RTG-74PVN...

2 Answers

My new tankless WH stopped working. It gives hot water for about 15 sec, then starts flashing C7 12 or C2 11. How can I fix this, We had it for a month now & it worked before.


11 The Gas Shutoff Valve is not opened
completely.

12 Gas Service has been interrupted.
LP Gas is running low. (LP models only)

I think C7 is where the startup sequence ended...and then you get the error code

If less than a month old...contact your customer support

Nov 01, 2009 | Rheem EcoSense by 7.4 GPM Outdoor...

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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