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

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My Paloma 42PVN shuts down and shows code IL. The manual says it's Lime deposits. How do I remove these deposits. The unit has been running fine for over 1 year but now it only runs intermittently and shuts down.

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  • george_locke Oct 16, 2010

    If it sits idle for a few weeks at a time do I need to drain the unit to help prevent lime buildup?

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You need a 5 gallon bucket and a small sump pump that connects to a garden hose. The hose connects to the inlet of the water heater and and then run a second hose from the hot water outlet into the bucket. Pour in about a gallon of white distilled vinegar. Turn the pump on and let the vinegar run through the heater for 15 minutes. Reverse the hoses and run another 15 minutes. reconnect the heater and test the water flow. You may need to repeat these steps several times to remove enough debris and buildup.
Installing a water softener treatment system will prevent the buildup from occurring so fast, if ever again.

Posted on Oct 16, 2010

Testimonial: "Thank you, I'll try flushing it. It's at my cottage so it sits idle for a couple weeks at a time but I use it all year round. "

  • Dplumber
    Dplumber Oct 16, 2010

    No. That can make the problem worse. As the water evaporates each time it will leave behind a layer a minerals. If it is going to freeze, definitely drain it.

  • george_locke Oct 17, 2010

    OK, that makes sense, thanks again. It won't freeze so I'll leave it full when I'm away. I think I'm going to flush it at least once a year and look into a water conditioner.

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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 control unit keeps alternating between 120 and IL. Cannot find code IL


Before calling service technican, copy following links for general troubleshoot resources and error codes, and manusls, and Rheem contact information:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/pdf/Rheem-CondensingTankless-maintenance-2012.pdf

Error IL usually means delime the unit.
http://waterheatertimer.org/pdf/Rheem-De-lime-tankless.pdf
Read your product manual for yearly/monthly maintenance schedule.
Tankless are maintenance heavy and must be delimed each year.
Deliming using white vinegar take about 1 hour, and will not restore full efficiency to unit.
Tankless have the habit of forming lime deposits inside the heat exchanger, even with softened water.
Tankless cannot be exposed to more than 11 grains hardness in water.
Don't buy a tankless next time.
Read the manual first.

Aug 09, 2012 | Rheem Rtg53xn Natural Gas Tankless Water...

1 Answer

I am getting a IL code on my display


IL code is: water heater has lime deposits.
Tankless should be de-limed each year using white vinegar..
Search U-tube for "de-lime tankless heater" to see how to do this yourself, or call service technician.
There are special fittings that can be added to tank at the hot-n-cold ports that let you easily de-lime your water heater each year.

Typical manual shows error IL on page 33:
http://waterheatertimer.org/pdf/Rheem-RTG74IndoorOutdoor_owners.pdf

Typical manual also shows regular maintenance on page 29.
The word maintenance is used throughout the manual.

Research shows that regular de-liming will not restore full efficiency to tankless water heaters:
http://waterheatertimer.org/pdf/Battelle_Final_Report.pdf

Feb 15, 2011 | Rheem Paloma PTG-74PVN / RTG-74PVN...

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

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...

1 Answer

I have Paloma Model PTG2-42PVN it shuts off and remote flashes C7 and 13.What can I do?


call the toll free number 800) 432-1549, they will mail you a 11 or 14 page manual to clean the burners... big job, but it works!

Oct 06, 2009 | Rheem Paloma PTG-74PVN / RTG-74PVN...

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