Question about Rheem EcoSense by 4.2 GPM Tankless Water Heater LP Gas

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Eco180DVN initially the flame ignites and then goes out giving error code 11 and the red LED on the PCB blinks. Also get a smell of incomplete gas combustion.

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Hello. Move your thermocouple closer to the flame. If that doesn't solve it, replace the thermocouple. J.

Posted on Jul 06, 2010

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Posted on Jan 02, 2017

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Protech 62-24084-02 troubleshooting


62-24084-02 LED CODES
POWER LED - GREEN
ON - Normal
OFF - No power to board
OK LED - GREEN
One Blink - One hour retry delay
Two Blinks - Pressure switch failure (remains open)
Three Blinks - Limit switch fault
Four Blinks - Pressure switch failure (remains closed)
Five Blinks - Twinning fault
FLAME LED - YELLOW
ON - Good flame
Rapid Blink - Flame present with gas valve de-energizing
Slow Blink - Marginal flame

Jan 01, 2014 | Protech Rheem/62-24084-82-1PK - Integrated...

1 Answer

Brand new model rtg-64dvln smell gas when water is turned on..when water is off no gas smell getting code 11 gas valve not fully open but gas valve is fully open


1) if you smell gas, this is absolutely dangerous.
Call installer immediately.
If you installed yourself, get a professional technician immediately.

2) Copy following link for For error code 11: problem with gas.
Do not use flex line, bleed air from gas line, check gas pressure, incomplete combustion, etc.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Jan 29, 2013 | Water Heaters

1 Answer

Noritz Boiler NH-1501-DV-NG Shuts off at radom times with blinking error code 123


error code 123 is a flame rod sensor problem. Chances are the flame rod is sending a weak signal to the control unit. Check for a loose flame rod electrical connector. Peek in the flame inspection windows to ensure there is a proper flame on that side of the burner. If non of the above then try removing the flame rod and cleaning with 400 grit sandpaper or replace it with part order # SKC7448 (called an Ignition plug ELV & Packing EHK SETV)

Dec 16, 2012 | Noritz NH150-DV-NG Indoor Direct Vent...

2 Answers

No hot water code 11 keeps coming on had system for 5 years


Before calling service technician, open following link for error codes, Rheem chat, and possible manual:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/pdf/ErrorcodeTroubleshooting.pdf

Error codes are considered start-point for troubleshooting.
Error 11 is 'no ignition'
Without ignition, the burner will not turn on and heat water.

This problem can be caused by low gas pressure, air in gas line, defective tankless parts such as gas solenoid, loose electrical connections, improper electrical grounding, bad igniter, etc.
Problem can also be caused by combination of problems.
Good news is that error code shows 1 code and not multiple error codes that can indicate larger failure including PC board.

Each tankless instruction manual recommends yearly maintenance where technician will clean burner parts, bleed gas line, check gas pressure, check air and venting, etc.
Yearly service covers the cause for most common error codes.

Aug 07, 2011 | Rheem RTG-66DVN Direct Vent Natural Gas

1 Answer

No hot water. Constant beeping at the tank. Tempature gauge flashing 11.


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

Error codes are start place for troubleshooting:
Error 11 is 'gas is inadequate' or 'ignition failure'
Open gas valve so handle is parallel with gas line.
Bleed air from gas lines.
Check that appliance is grounded.
Check igniter wires and harness for damage.
Check that vertical vent length does not exceed limit.
Other causes: Gas inlet solenoid valve, bad igniter, solenoid valve, flame rod.

Jun 14, 2011 | Rheem Tankless Hot Water Heater...

1 Answer

My paloma tankless gas has a error code c2 11 c4 12 why


Open following link for useful troubleshooting information:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Error code 11 is 'No ignition'
http://waterheatertimer.org/pdf/Paloma-Tankless-Error-Codes.pdf

Ensure you have gas to the appliance.
Ensure gas type and pressure are correct.
Bleed all air from gas lines.
Ensure gas line, meter, and regulator are sized properly.
Ensure appliance is properly grounded.
Check gas solenoid valves for open or short circuits.
Ensure igniter is operational.
Check igniter wiring harness for damage.

Error code 12 is 'Flame Failure'
Ensure you have gas to the appliance.
Ensure gas type and pressure are correct.
Bleed all air from gas lines.
Ensure flame rod wire is connected.
Check flame rod for carbon build-up.
Ensure gas line, meter, and regulator are sized properly.
Ensure appliance is properly grounded.
Check gas solenoid valves for open or short circuits.
Check power supply for loose connections.
Check power supply for proper voltage and voltage drops.
Disconnect remote control.
Disconnect and re-connect all wiring harnesses on unit and PC board.
Ensure proper venting material was installed.
Ensure condensation collar was installed properly.
Ensure maximum vertical vent length does not exceed allowable limits.
Ensure maximimum horizontal vent length does not exceed allowable limits.

Range of causes are part failure, gas pressure loss, air in gas line, improper installation of gas line or vent, 120V power to unit is disrupted or unit not grounded, circuit problems, venting problems, remote control, wiring to PC board, board failure, carbon build-up on flame rod, short circuits on gas valve solenoids.
The fact that you have error code tends to eliminate your plumbing as culprit, the error code does not mention air supply, otherwise it looks like every possible cause is on the table.

Add a comment with your experience so other 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 25, 2011 | Rheem Tankless Hot Water Heater...

2 Answers

C2 11 error code im a master plumber and put this in my own home , and also have owned my own business for 15yrs and im getting this code. i no this unit is installed correctly for a fact what the heck is...


As a professional plumber, you know all costs are energy, which is why you recommend replacement rather than repairs that need repaired over and again.
http://waterheatertimer.org/Hidden-cost-of-tankless-water-heater.html
I certainly believe tankless are a waste of energy.
Open following link to see list of UN-answered fixya questions about 1 model Rheem tankless:
http://www.fixya.com/tags/rtg_74pvn

That being said, C2 11 code has to do with gas supply, venting, which could be external cause or internal part failure, or combination.

Typical manual shows error C2 11 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 manual.
Tankless are prone to lime build-up and should be de-limed each year, and cannot be exposed to more than 11 grains of hardness in the water.

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


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.

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

3 Answers

I have an error code of c2 11 on rheem model number ptg-74pvn-2 I will get warm water for about 5 seconds and then it goes cold


Rheem, Richmond, Ruud, and Paloma are all the same manufacturer. After about 9 months, my tankless RTG-74PVN started giving me error code 11 and cold water!. I fixed it by cleaning the burner, as shown in this video:
www.howtolou.com/clean-a-burner -Lou

Dec 10, 2010 | Rheem Tankless Hot Water Heater...

1 Answer

Rheem take less hot water shuts down while in shower. Error code 11. Tried using more gas turned on gas dryer. This worked for 2 minutes, then error code 11. So I got a 2 minute army shower.


this is usally a ignition problem...it is usally the flame sensor or ignitor giving problem..if the unit is still under warranty contact rheem...or have a qualified technician check it out..

Aug 11, 2010 | Rheem Tankless Hot Water Heater...

1 Answer

I have a Nortitz natural gas water heater, model #N-063s-1. Acouple of days ago it stopped heating the water. what can I do myself to fix this matter. Thanks, lynnatheana@hotmail.com


There are many reasons a tankless heater will stop heating water. The first thing I would look for is a flashing red light on the burner indicator. The flash break down goes as follows

continuous blinking - typically means ignition failure or the unit is overheating; look for visible water inside the unit, have your gas pressure checked, or check the flame rod/igniter for buildup of debris

three blinks - typically indicates 16 error code; typically resolved by performing a descale

4 or 5 blinks - exotic error codes; for these you should definitely contact Noritz tech support

If there is no flashing light, first check your filter for debris. If the filter is clean, your flow sensor is probably stuck. Again I'd recommend contacting Noritz tech support to help you clean the flow sensor.

Jul 31, 2010 | Noritz 6.3 Gallon Residential Tankless...

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