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Tankless water heater doesn't heat . error codes

Starts beeping and shuts down

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: Noritz tankless water heater not producing hot water

I called Noritz error code 16 is a overheat problem. Noritz say's to flush your coil with vinegar or CLR.
Use a small pump to recirculate the CLR or vinegar through the system for 45 minutes and flush with fresh water. This worked for me.

Posted on May 12, 2009

snap101
  • 117 Answers

SOURCE: Heater shuts down with C4-13 code

your not getting enough fresh air to it. where is it located? you need 1 square inch per 1000 btu's. it's having irregular combusion.

Posted on Aug 02, 2009

  • 1 Answer

SOURCE: Tankless water heater (Paloma) Has C2 11 error

I had this problem with the C2 11 error code. My unit is 1.5 years old. I called Paloma and they emailed me an 11 page document to clean the burners. I am not an HVAC but I got the feeling that's who the instructions were for. Very difficult but you can do it if you're handy. You basically take apart 1/2 the unit, be carfull not to lose any screws and label all the little brackets that come off. It took me 2-3 hours to get to the burners. I used a can of air (for keyboards-electronics) to blow on the burners and clear any build up. After putting it back together (carefull to make sure the 3 gas tubes make a seal when re-installed) the unit works. I did this today so I'm not sure the unit will still work in a week/month. I am dreading having to do this every year to keep the unit running.

Posted on Oct 21, 2009

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SOURCE: Paloma tankless, gas, water heater, error code C7 76

If you look on the left hand side of the burner control module you'll see 4 capacitors - the capacitors have most likely failed...pretty sure anything code 76 is P/S failure. It may also be covered for manufactures defects. If the cap is blown..the top will be slightly raised as apposed to flat like the other nearby caps - they are called top blow capacitors...the damage should be evident.

Posted on Nov 01, 2009

  • 244 Answers

SOURCE: I have a paloma tankless water heater about 3

I had the same problem with my Paloma a year and a half after installation...contacted Rheem customer service (800-432-8373) and they recommened a local installer in my area. The technican diagnosed the problem as the "flow control valve"; he managed to get Rheem/Paloma to cover the part under warranty...I only had to shell out the money for the install.

Posted on Nov 06, 2009

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1 Answer

Rheem RTG-66DVN shuts off 1-2 times a day


You received recommended answer posted ago.
Probably same answer today:
Don't install tankless, especially in location where there is no service technician available unless you expect to heat water by setting tankless out in sun.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Repair any brand tankless, any error code or problem, same day, yourself for $385:
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Add comment and give link to service manual that you located.

Apr 05, 2013 | Rheem RTG-66DVN Natural Gas Tankless Water...

1 Answer

My Boch 24ES Highflow Hotwater is showing Code 14 and only runs for i minute then shuts off


Code 14.
What water heater do you have?
Question posted under tankless Bosch, but these error codes start with a letter.
Rheem/Richmond etc Tankless has error code 14
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/pdf/Paloma-Tankless-Error-Codes.pdf
Call tankless service technician.
Ask technician how much it costs to have recommended yearly service.

Or install whole new tank-type gas water heater yourself for $350 from local box store, and avoid the entire headache, then sell tankless online for parts.
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Aug 09, 2012 | 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

Rheem-Tankless-water-heater I am showing a C2 then 11 flashing on my thermostate. what is wrong.


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

Error codes are start point for troubleshoot.
C2 11 is 'no ignition' or 'gas shut off vale is not open'
Gas shut off valve handle must sit parallel with gas line.
This kind of error code can be air in gas line, improper grounding at electrical outlet, bad igniter, shorted solenoid, loose connections, etc.
Most tankless manuals recommend yearly service, and that type of work usually covers cause for most common error codes: for example checking gas pressure, gas line, air in gas line, clean and check burner and combustion parts and igniter, inspect that vent condensate is properly draining and vent has good draft, clean water filter, clean air intake, check for loose wires, delime heat exchanger, test outlet with circuit analyzer etc.

Aug 11, 2011 | Water Heaters

1 Answer

Error code C4 76. Water heater shuts off (only with shower use). Will reset and work 4-5 min. then off agin. works fine from sinks. Unit is app 3 years old and did work fine.


Before calling service technician, open following link for Rheem tankless resources, including error codes and general help for homeowner.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

C7 76 is communication fault with remote control.
Remote is connected to tankless with a wire.
Usually you remove wires from terminals on tankless, and see if tankless functionality returns.
If tankless works fine, then it will heat to default 120 degrees.
Clean terminals and put them back.
If problem returns, then problem is then narrowed to bad wire, bad remote control, or problem inside tankless.
Since new remote control costs about $99, it might be cheaper to have service technician review the problem and catch up with maintenance.
Error codes are considered starting points for troubleshoot since error can have different soultion than same error on another unit.

Read manual for advisories, error codes, and required maintenance.
For example tankless might require monthly water filter cleaning, and yearly de-liming, and yearly burner cleaning.
Your service technician can advise what is typical for your region, since altitude, incoming water temperature, quality of water, water pressure, venting, are factors for maintaining water heater.

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 25, 2011 | Rheem EcoSense by 7.4 GPM Tankless Water...

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...

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