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Error code A1 21 on model ptg-42pvn - Water Heaters

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

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Posted on Jan 02, 2017

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SOURCE: Rheem Paloma PTG-42PVN, No hot water. error C4

get ready to pull that one out and get a different brand

worked on mine for a year and a half and replaced everything and the unit would still not run.

Posted on Jan 21, 2011

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  • 48 Answers

SOURCE: 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.

Posted on Apr 13, 2012

  • 5245 Answers

SOURCE: My PTG-42PVN h20 heater is allowing h2o temp to fluctuate from one extreme to another.

Does same thing happen at all faucets?
Are you getting error code?
You might have crossover problem with defective faucet cartridge.
Copy following links for troubleshoot resources:
http://waterheatertimer.org/pdf/No-Error-Code.pdf
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Posted on Aug 08, 2012

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1 Answer

I have a paloma tankles water heater model #ptg-42pvn i am getting an intermitent error code C4,12. what is the problem?


Copy following link for Rheem-Paloma tankless troubleshoot and error codes:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/How-to-install-gas-water-heater.html#install

If unit worked before: Maybe bad PC board. Maybe lack of required yearly maintenance.
Common error codes can be caused by not following maintenance protocol such as cleaning combustion parts, checking gas pressure, checking venting, and air intake, bleeding gas line etc.
Too bad Rheem-Paloma manuals do not show HOW to conduct this maintenance, leaving customer with many unknowns, and no way to oversee that maintenance performed by hired technician is complete, and matches recommended maintenance.
Sell unit on ebay, and install tank-type gas water heater.

Mar 20, 2013 | Rheem Paloma PTG-42PVN / RTG2-42PVN...

1 Answer

My PTG-42PVN h20 heater is allowing h2o temp to fluctuate from one extreme to another.


Does same thing happen at all faucets?
Are you getting error code?
You might have crossover problem with defective faucet cartridge.
Copy following links for troubleshoot resources:
http://waterheatertimer.org/pdf/No-Error-Code.pdf
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Aug 08, 2012 | Rheem Water Heaters

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

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...

1 Answer

Rheem Paloma PTG-42PVN, No hot water. error C4 56 can u help?


get ready to pull that one out and get a different brand

worked on mine for a year and a half and replaced everything and the unit would still not run.

Jan 19, 2011 | Rheem Paloma PTG-42PVN / RTG2-42PVN...

1 Answer

Starting unit very difficult


Check your thermocoupling, because it seems like it isn't sensing the flame.

May 09, 2010 | Rheem Paloma PTG-42PVN / RTG2-42PVN...

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