Question about Rheem Water Heaters

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I get a P1 error code on my rheem tankless water heater controler it flashes p1 & temp seting Unit worked fine for two days then this unit is new just installed it

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Just clean shower head or faucet with CLR to increase water flow. I have same problem

Posted on Oct 24, 2012

Rheem will say to contact installer.
This is a water or plumbing issue ranging from incoming water temperature, temperature setting, water flow restriction, bad PC board, or possibly loose wiring.

Rheem offers on-line chat. You will need model, serial number, name of installer and service technician etc:
http://www.rheem.com/products/tankless_water_heaters/customer_support/

Open following link for centralized troubleshooting information including manuals, error codes, recall list, technical bulletins.
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.

Posted on Mar 27, 2011

  • sypitwar May 11, 2011

    Did a search for this error code. Found the following link to an instruction manual. See page 25-26.
    http://www.homedepot.com/catalog/pdfimag...

  • Anonymous May 12, 2011

    Good research, bubba! Note that error code chart shows 'Possible Cause.' Suggested fix of increasing water flow might include changing cartridge on single-handled faucet, or replacing mixing valve, or replacing check valve, or replacing re-circulation pump, cleaning filters, repairing softener, installing pressure tank, cleaning aerators and pipes, calling city services, bad tankless sensor, etc. Typically an error code on one tankless unit can have completely different cause and solution than another tankless unit. But it does give a place to start. Buy Brady BTG-100 pressure gauge.

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Posted on Jan 02, 2017

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1 Answer

I have a Richmond tankless water heater and it has L1 error code...can somebody help me with this?


Might be able to help. Except L1 does not show on any error code file.
Copy following link for Rheem Richmond Ecosense etc computer water heater troubleshoot resources
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
Are you sure the error is not IL? Delime tankless.
Or UL flashes and indicates reset.
Or CL flashes and indicates fault history is cleared.
Or error 11 combustion failure? Call for service.
Or P1? Low water pressure, clean water filter check for leaks and crossover caused by bad single-handled faucet cartridge.
I recommend calling Rheem to find local technician who is qualified to work on tankless computers. Tankless are not ordinary water heaters, and they require continual maintenance to avoid common error codes, especially as unit gets 2-3 years old, after warranty has expired.
The required maintenance and expense of repairs, and general fact that people cannot make their own repairs, make tankless computers a bad choice for heating water.
If unit is 4-5 years old, it might be best to install tank-type heater for $385 from Lowes and cut losses.
http://waterheatertimer.org/How-to-install-gas-water-heater.html
Gene
h

Aug 08, 2013 | Rheem Richmond Encore Tankless Nat Gas...

1 Answer

Code P1 appears in my Paloma gas water heater


Copy following link for troubleshoot resources Rheem/Paloma tankless:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/images/Rheem-service-valves.jpg
http://waterheatertimer.org/Crossover.html

Error P1 is not enough water flow.
Clean water filter located on cold water inlet at top of cold pipe when cold enters unit
Test single handle faucets for crossover
Check if faucet can fill 1 gallon can in 30 seconds.

Apr 15, 2013 | Water Heaters

2 Answers

I am geting a P1 error code


P1 error code is not enough water flow to operate the unit: increase water flow to unit.
http://waterheatertimer.org/pdf/Rheem-Error-code-P1.pdf
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Error codes are considered start-point for troubleshooting.
Page 18 of maintenance manual shows how to clean water filter monthly.
http://waterheatertimer.org/pdf/Tankless-maintenance.pdf

Other causes can include faulty sensor, clogged in-line filter, clogged water softener, sediment in pipe, sediment at elbow, bad check valve, water leak, etc.

Take a moment and rate answer:
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.

Sep 11, 2011 | Rheem Tankless Hot Water Heater...

1 Answer

PTG-53XN error code p1. And hot water turns off.


Before calling service technician, open following link for Rheem troubleshoot resources including Rheem chat:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Error codes are considered start point for troubleshooting, and can sometimes mislead.
Error P1 is 'not enough water to operate the unit:'
http://waterheatertimer.org/pdf/Rheem-Error-code-P1.pdf

This problem can be caused by plumbing problems such as crossover, or clogged water lines, or dirty water filter, or clogged water softener, or temperature of unit set too high. Or combination of these problems.
Remember if temperature is set very high, then more cold water is used at the faucet. This means less hot water is drawn through the tankless water heater, so the flow rate may drop below activation threshold.
http://waterheatertimer.org/Crossover.html
http://waterheatertimer.org/Low-hot-water-pressure.html

Jul 08, 2011 | Rheem Tankless Hot Water Heater...

2 Answers

Have a p1 flashing on the remote control and no hot water. I have tried shutting the water and power off and still a p1 flashing on the control unit.


P1 is reportedly defective check valve that can cause water flow to decrease, and tankless not heat water smoothly. But can also be other causes, or combination of causes. Call service technician, contact Rheem, or replace check valve and see if problem solves. Then add a comment with solution so others can benefit from your experience.

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

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 13, 2011 | Rheem Water Heaters

1 Answer

I have a RMTG-53dvn piped in parrallel with a traditional water heater because I used to have two traditional in parallel. The unit never kicked on with no trouble code, so I piped in series with a...


I could see how it might not work in parallel. Much water would go thru the conventional heater, so there would be low flow thru the tankless.
Now, the tankless is getting hot water from the conventional. Try shutting the conventional heater's power source off so the water gets cold, then see what happens with the tankless.
Gary

Mar 05, 2011 | Rheem RTG-53DVN Direct Vent Natural Gas...

2 Answers

Why get a P1 error code on my Rheem tankless RTG-64xp?


1) I cannot find Rheem error code P1
http://www.palomatankless.com/owners/homeowner+trouble.lasso
http://www.palomastore.com/paloma_error_codes.html

2) BOSCH does not show P1 either:
http://www.boschhotwater.com/HelpfulResources/TechnicalSupport/BoschAquaStarModels/2400ESTechSupport/Troubleshooting/tabid/1295/Default.aspx

3) Best I could find is that folks with P1 error code report tankless fires for short period, and then turns off.
This implies air, fuel or vent problem, and can be internal, external or combination.

4) P1 appears frequently on control board descriptors, which might imply the error is control board malfunction.

5) Call Rheem 1-800-432-8373, and then add a comment to this thread and let folks know what you discover.

6) I will also call Rheem when time permits, and post what I discover.

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.

Mar 05, 2011 | Rheem Water Heaters

2 Answers

I get a P1 error code on my Paloma tankless water heater. It blinks between the P1 and the tempature setting


Water inlet temperature to the heater is the same as preset on the controller.
I had this happen to me becouse I have a solar tank with temp of
135 farenheit.
Once I bypassed the sollar tank..no problem

Sep 24, 2009 | Rheem EcoSense by 7.4 GPM Tankless Water...

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