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Recently installed a Noritz NRCP 112 water heater, but very frequently it keeps shutting off and on the display it says error 60, after looking at the manual there is no explanation of what error 60 is. What can this problem be?

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  • Water Heaters Master
  • 5,089 Answers

Shut downs with new heater might be defective PC board.
Other issues could be associated with improper installation.
Low gas pressure caused by undersized gas meter or water in the gas line, undersized gas line to unit (requires 1" gas line to within 10 feet and then 3/4"), wrong type of gas line (cannot use flexible gas line), improper vent (for example too long horizontal run or undersized vent pipe or shared vent with furnace or other gas appliance), not enough incoming fresh air supply, nearby exhaust fans or vent fans stopping proper draft on tankless, temperature set too high for cold incoming water supply (install tempering tank to help preheat water),..
http://waterheatertimer.org/Tempering-tank.html

Other causes can be clogged water filter located where cold water enters tankless, or clogged water line, or crossover caused by bad single-handled faucet or bad crossover valve on recirculation system, improperly sized recirculation system. These problems can mean less water flow through tankless, so burner shuts down, and unit throws error code because sensor indicates water flow is still moving but inadequate to trigger burner
http://waterheatertimer.org/Crossover.html
http://waterheatertimer.org/Water-heater-recirculation-system.html


Gene
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Posted on Nov 27, 2014

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Posted on Jan 02, 2017

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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

senor8
  • 73 Answers

SOURCE: what is error code 59 on a noritz tankless water

The 59 code is typically caused by insufficient gas supply to the unit. It can also be caused by obstructed exhaust flow, stuck exhaust damper (located directly on top of the unit's exhaust), insufficient makeup air, or improperly installed venting (i.e. too long or too many elbows).

I would recommend initially checking the incoming gas pressure at the gas connection on the unit. The gas pressure should not drop below 5" water column for a natural gas unit, 8" for a propane system (the unit need to be operating at its maximum output).

Posted on Aug 14, 2009

  • 1 Answer

SOURCE: noritz tankless water heater gives error code 11

This worked for me in the same situation. There is a filter inserted into main gas/ water control valve that senses water flow restriction. The sensor is connected to the gas valve. If it senses inadequate water flow it tells the gas valve to shut down so the water in the heater won't boil. Very expensive part. If you do find the filter clogged, a sediment water filter shoud be install on the inlet side of the water piping.

Posted on Oct 13, 2009

  • 13 Answers

SOURCE: Water Heater Keeps Going Off

Modlara, it's partially true. There is a flow control valve in the heater. In case the intake is too cold or water usage is too high this valve reduces flow volume to maintain output temperature. But not shut off the flow entirely. Too bad, 063 does not come with a remote control, otherwise it could tell you what went wrong. My guess is either the air intake or vent are some how blocked. The heater is having problem generate enough heat to keep up the temp. so the flow control valve kicks in.

Posted on Feb 12, 2010

senor8
  • 73 Answers

SOURCE: getting error code 16. what does it mean and what

a 16 error code is typically caused by scale formation. I'd recommend performing a descale on the heater.

Posted on Jul 12, 2010

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1 Answer

I have a Noritz tankless water heater (model n-132m). I am getting an error code of 71. What does that mean?


The Noritz Manual shows fixed for the following error codes:
11
21
90
99
For all other codes this is the recommendation:
Contact our sales agent if:
• Any other error code appears.

Sep 12, 2014 | Noritz Commerical Tankless Water Heater...

Tip

Error Code 90 Solution


Over time after about 5 to 6 years many Noritz heaters tend to display error code 90 and stop working. The unit has to be shut off and back on for it to work again for a short time. Error code 90 is indication of abnormal combustion and can have a few causes, including blockage in the exhaust vent. However the problems lies mostly with the combustion fan. that is the fan that you hear when the unit is running. It is unable to deliver enough air to normal combustion.
Replace the fan and while doing it clean the air pathway with compressed air. In addition remove the ignition and heat senors (all in one assembly, in the middle of the unit) and sand them very slightly with very fine sandpaper (400 or higher) to remove build up on them.
While the fan is being ordered you can at your own risk operate the unit with the cover slightly open (about 2 in.) at the bottom and the unit will run without code 90. It is highly recommended to hire a trained technician for the above work as gas appliances pose a significant danger to human life and property if not installed or maintained properly. This solution is for informational purposes only. Please be safe.
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on Jun 23, 2014 | Noritz 8.4 Gallon Residential Tankless...

1 Answer

Error 71


EC 71 usually means you are using a battery backup that doesn't produce a pure sine wave. OR you recently had a power outage and it shorted the circuit board. if you have a battery backup try unplugging that and see if it works okay. If not, just call Noritz for a replacement c/b.

Dec 06, 2013 | Noritz 6.9 Gallon Residential Tankless...

1 Answer

We have a noritz tankless water heater that we installed & it stayed on all evening, provided hot water etc. Decided to move the display & turned off. Now when we go to turn it on, it will flash...


check the wiring connections for your remote. The FF is related to communication problems with the remote. You should also reset the unit by disconnecting electricity, waiting 20 seconds, and then reconnecting electricity to the heater.

Apr 26, 2010 | Noritz 6.3 Gallon Residential Tankless...

1 Answer

Noritz tank less propane water heater, no out going pressure


There's a filter on the cold water side of the unit. You'll notice a black, plastic, cylindrical component directly below the unit on the cold water line pointing to the left. If you shut of your water and unscrew that cap, there will be a filter attached to the other end.

If the filter is clean, I'd recommend calling tech support for help. You might have an error code.

Jan 08, 2010 | Noritz Liquid Propane Tankless Water...

3 Answers

My Noritz 6.9 flashes a 90 code. I was told by Noritz that this code relates to air flow.. and that the unit needs to be cleaned/serviced. Is this something I can do myself? If so, how do I do it? If...


I recently started getting an error 90 on my N69-M unit. I finally got a hold of someone at Noritz tech support and they state this error is a general combustion/exhaust/air flow error. Here is what they suggested to look at.
Gas Pressure – The unit has a minimum flow rate for the incoming gas and if the system is gas starved, then you have some sort of obstruction or restriction. If this is a new install and you are getting an error 90, this is likely your problem but if this is an existing install that suddenly started getting this error, unless someone was monkeying around with any values you might have in-line, this probably isn’t your problem.
Air Flow – This is a ventilation issues caused by the build-up of dust, lint, etc that chokes the flow of cool air to the unit and causes the burner to overheat. If your unit runs for a while and then pops an error 90, this is probably your problem. They told me they get a lot of these errors when the unit is installed in close proximity to a clothes dryer, which makes sense. To resolve this, remove the front panel and blow out the intake holes and slots (I tried to shop-vac mine before blowing them out and I was amazed at how much the vacuum didn’t remove). After removing the cover, the first thing you should see is a system board that is covered by a black dust shield. The board is held to the unit by 3 screws (one on the top left and two at the bottom). Remove the screws and let the board dangle by the wires plugged in it. You should now be staring at the fan assembly. They suggested that I either remove the whole unit and clean it out or use compressed air to blow it out. I went with the compressed air route because getting the fan assembly out requires removing and eventually reinstalling 2 relatively small screws way in the back of the unit that you have no real easy way to get to. Blow/clean the fan out and then blow out everything else inside the unit. Reassemble and you are good to go, provided this is your problem.
Exhaust – You might see an error 90 if the exhaust can’t freely flow. Two things can cause an exhaust issue to throw this error. One is that the flapper valve on the outlet of the system sometimes gets stuck closed. This should be easy enough to fix. The other is an obstruction in your exhaust ducting or using too small of a diameter duct to exhaust the unit.
Hope this was somewhat helpful and prevents you from having to wait on hold forever for Noritz support or having to pay someone to fix your problem.

Nov 14, 2009 | Noritz 6.9 Gallon Residential Direct Vent...

1 Answer

Noritz Tankless error code 16


The trick with these hot water heaters is to keep the filter screen clean and flush the system with CLR periodically. Code 11 is ignition error. Is your gas valve turned on?

Oct 17, 2009 | Noritz 6.9 Gallon Residential Direct Vent...

1 Answer

Noritz tankless water heater gives error code 11


This worked for me in the same situation. There is a filter inserted into main gas/ water control valve that senses water flow restriction. The sensor is connected to the gas valve. If it senses inadequate water flow it tells the gas valve to shut down so the water in the heater won't boil. Very expensive part. If you do find the filter clogged, a sediment water filter shoud be install on the inlet side of the water piping.

Oct 12, 2009 | Water Heaters

2 Answers

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.

Jan 04, 2009 | Noritz 6.9 Gallon Residential Direct Vent...

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