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

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Will not heat water starts to heat and then quit.Code comes up C 2 and 11 on remote

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Check overheat stat may be going to lockout

Posted on Oct 12, 2009

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I have c7 code


it is a communication problem between remote control and tankless unit

Temporary fix:
1 Turn off electricity to tankless and remove cover. Find two terminals that remote control connects to.
2 Disconnect remote control wiring. Turn electricity back ON.
3 Open hot water tap and see if unit works as expected.
4 Without remote, tankless will heat water to default 120 degrees F and will run without the remote.
Contact Rheem they may send you another pcb board.

Nov 11, 2013 | Rheem Paloma Tankless Water Heaters...

1 Answer

Code 14 comes up on the remote what does that mean


Before calling Rheem or service technician, open following link for troubleshoot resources including error codes, Rheem chat, typical required maintenance manual, and possible product manual:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/pdf/Tankless-maintenance.pdf

Error codes are start point for troubleshoot.
Error 14 is 'overheat wrap fault.'
This can include venting problem, failed heat exchanger, bad safety circuit, gas problem.
Rheem does not have a service manual posted for this specific problem.

Additional information: Tankless water heaters consume large amounts of gas during combustion. The combustion burns away hydrogen and the remaining poisonous byproduct is vented into the atmosphere at each home day and night.
Byproduct includes acidic water vapor that condenses along the vent pipe and drips back down vent.
Each tankless vent pipe has a drain line that directs acidic water into household drain.
If this drain line becomes clogged, or if vent was not installed correctly, then water drips down into heat exchanger and can erode or crack exchanger.
The typical maintenance manual above shows steps that can solve many tankless problems before they happen.

Sep 11, 2011 | Rheem Water Heaters

1 Answer

The computer code 14 comes up on the computer what does that mean.


Before calling Rheem or service technician, open following link for troubleshoot resources including error codes, Rheem chat, typical required maintenance manual, and possible product manual:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/pdf/Tankless-maintenance.pdf

Error codes are start point for troubleshoot.
http://waterheatertimer.org/pdf/ErrorcodeTroubleshooting.pdf
Error 14 is 'overheat wrap fault.'
This can include venting problem, failed heat exchanger, bad safety circuit, gas problem.
Rheem does not have a service manual posted for this specific problem.

Additional information: Tankless water heaters consume large amounts of gas during combustion. The combustion burns away hydrogen and the remaining poisonous byproduct is vented into the atmosphere at each home day and night.
Byproduct includes acidic water vapor that condenses along the vent pipe and drips back down vent.
Each tankless vent pipe has a drain line that directs acidic water into household drain.
If this drain line becomes clogged, or if vent was not installed correctly, then water drips down into heat exchanger and can erode or crack exchanger.
The typical maintenance manual above shows steps that can solve many tankless problems before they happen.

Sep 11, 2011 | Rheem Tankless Water Heater Main Remote...

1 Answer

Remote is flashing C8 and 76, alternating. I turn the unit off, then back on, and I get hot water for about 10 seconds, then it goes cold and the same error message occurs. Unit is Rheem Main Remote...


Before calling service technician, open following links for Rheem tankless resources including error codes and Rheem chat.
Disconnect wires from remote to see if system stabilizes. Unit will heat to default temperature without remote.

Error codes are considered start-point for troubleshooting.
C8 76 can mean PC board failure.
76 can mean communication failure with remote control
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/pdf/ErrorcodeTroubleshooting.pdf
http://waterheatertimer.org/pdf/Rheem-error-code-C7-76.pdf

Jul 31, 2011 | Rheem Tankless Water Heater Main Remote...

1 Answer

I have a Rheem rtg 74dvp but its not heating and the display show me 1 76 and 2 76, and come all the time to 76 F and another times its blinking the temperature, but not heat


Error code 76 is communication problem between remote control and tankless unit.
http://waterheatertimer.org/pdf/Rheem-error-code-C7-76.pdf
Multiple error codes could indicate that main PC board is bad.
Before calling service technician, open following link for troubleshooting resources including link to Rheem chat, manuals, error codes, etc.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Jul 15, 2011 | Rheem Tankless Water Heater RTG-74DVP...

1 Answer

The hot water just turn cold by it self and wont come back. I have to go to the attic and unplug and then plug back, it will then work. It does this again next time in the shower, midle of the shower,...


Before calling service technician, open following link for troubleshooting resources, including possible manual, and Rheem chat.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
Rheem usually asks you to call local service technician.

There are many factors that cause problem you describe: bad PC board, sensor problem, loose wires, crossover in single-handled faucet, lime build-up in heat exchanger, clogged water filter.
The remote control might give you an error code. Error code is a starting point for troubleshoot.
Error code on one unit can have different cause than same error code on different unit.

Read manual for required maintenance.
Tankless require yearly maintenance.

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 26, 2011 | Rheem RTG-74PVN-2 Natural Gas Pronto Whole...

1 Answer

I own a Rinai Integrity 2532. It heats the water for the in-floor heating. About once every other day on average, the controller switches the temperature reading from its setting (150 degrees) to 10 and...


Sorry to read about your problem, I hope this helps you out.

You have not said anything about error codes, Based on that. You may have a defective remote control, to replace the remote, would be the first step. it would be the lowest cost to you.

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Dec 30, 2010 | Rinnai Digital Remote Water Heater Control...

1 Answer

250sx quit working. Gas o.k. water flow good, throws ea code after 3 start attempts. 1. where is the ionization electrode, and is the fan supposed to come on before ignition? Fan comes on afterea code....


The gas pressure must be increased at the regulator from 9 inches of water column to about 12.5-13 inches of water column. The CO2 levels need to be adjusted for each installation. The air intake MUST come from outside the same wall as the exhaust. I have never seen any manufactures tankless unit installed properly. Plumbers do not read the manual.

Jan 24, 2010 | Bosch & Tankless LP Hot Water Heater

2 Answers

PALOMA PTG-74PVN-1 Code C8 12 my water heater


C8 is the last stop in the point of burner ignition and a total of eight error codes. Error code 12 is a supplemental code that means your LP gas supply is too low...have your LP tank service and try again.

HTH,

Mike...

Dec 06, 2009 | Rheem Paloma Tankless Water Heaters...

1 Answer

It will heat water when noff for a long time. 4 hours or more. thenn it will trip the remote control. If I reset it will start to cycle twice and then trip again with a 20 flashing on the error code.


it's heating up too hot. you need to flush it out ASAP!! it has too much hard water in the heat exchanger. let me know if you need details how to flush it

Aug 02, 2009 | Noritz 6.9 Gallon Residential Direct Vent...

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