Question about Rheem Paloma PTG-42PVN / RTG2-42PVN Natural Gas Indoor

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 when the heater is turned off. Had no issues for over a year and 1/2 and then the last two years have ad the C4, 13 code issue and then today, the display flashes -0, 13..... The all air vents are clean and clear.

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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.

Posted on May 29, 2011

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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

What size venting do I need for the ptg-42-pvn?


3" category III stainless for special venting

Tanklessking shows Category III stainless steel vent kit for this model
3" vent
http://tanklessonline.com/rheem-water-heaters-RTG42.html

ptg-42-pvn has minimum 31,000BTU and max 118,000BTU
Max water temperature 120 degrees F
Spec sheet says: 3" special venting
http://www.palomatankless.com/products/42/specifications.html

Hart and cooley show special vent 3" stainless thru-the-wall vent
http://www.hartandcooley.com/specialgasvent/PDF/851515%20Tankless%20Water%20Heater%20Installation%20Vent%20Kits%20sell%20sheet%20-%20HC%20-%20low%20res.pdf

Hot water sources shows thru-wall or thru-roof
http://www.hotwatersource.com/RTG42PVN-Rheem-Indoor-Natural-Gas-Tankless-Water-Heater/RTG42PVN,default,pd.html

http://waterheatertimer.org/pdf/Tankless-roof-vent-installation.pdf

Aug 17, 2011 | Rheem Paloma PTG-42PVN / RTG2-42PVN...

1 Answer

What should the min and max manifold pressures be on my tankless water heater PTG2-42PVN. I'm under 3200 feet in elevation.


That is good technical question for Rheem.
Open following link for Rheem tankless resources including chat, possible manual, and typical service manual.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

May 2011. If you find exact information from Rheem, then add a comment to this thread so others with same question can find possible answer.

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

Thermostat flashes IL ? Model PTG-53PVN


http://www.palomatankless.com/owners/homeowner+trouble.lasso#28-11
The Controller displays error code "1L."
There is a build-up of lime in your Paloma.
Contact your plumber to service the Paloma by flushing out the lime.
Also search u-tube for flushing lime out of tankless.

Dec 29, 2010 | Rheem Paloma Tankless Water Heaters...

2 Answers

Palaoma ptg-42pvn flashing a1 21 code


error code 21 is malfunction of air intake filter switch. You need to check and make sure the air filter door is properly seated and that the front panel is properly installed

Aug 16, 2009 | Rheem Paloma PTG-74PVN / RTG-74PVN...

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