Question about Noritz NRC111-DV Tankless Water Heater

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My tankles water heater, Noritz NRC111-DV stops producing hot water for a period of 10 seconds to 5 minutes in the middle of a hot shower. Why?

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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tborn6
  • 700 Answers

SOURCE: Noritz not staying hot

How many faucets do you have on when this happens? Turn on more than 1 and if it still does the samt thing than I would check to see if the inlet water screen has debris in it. Valve off the unit and look at the inlet water side and theres a screeen that you should be able to remove and clean undeneith some running water and then replace. Good Luck

Posted on Jan 07, 2009

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  • 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

  • 6 Answers

SOURCE: Noritz tankless water heater/dishwasher not hot enough to clean

You are doing everything you can. Your dishwasher probably isn't drawing enough hot water to activate the unit so opening the faucet and flowing more water will activate the unit. Just try to adjust the flow from the faucet to a point it, plus the draw from the dishwasher, will activate the unit. This will come with trial and error as I am sure you have already experienced. Also, open the dishwasher when it does get filled and check the water temperature. You might have the unit set at a low discharge temperature. Do you have a touchpad to control the water temperature adjustment?

Posted on Jun 10, 2009

snap101
  • 117 Answers

SOURCE: leaking noritz water heater

Check your water pressure and the diagnostic codes on the controller to see if there is computer failure or another problem with the unit. send me an e mail i might be able to help im a nortiz certified service tech scott@bridgeplumbing.net

Posted on Jul 28, 2009

senor8
  • 73 Answers

SOURCE: After water to house was shut off, my Noritz

you probably had debris get into the filter or flow sensor when the water was turned back on. I'd recommend checking the filter first and if that doesn't work, call Noritz Tech support to help you with the flow sensor.

the filter is a black plug located on the cold water line (labeled cold on the bottom of the unit). It points torwards the left.

Posted on Jul 01, 2010

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1 Answer

Rinnai RL94i - Produces hot water for 3 minutes, then stops


I just had this exact problem. It kept getting worse until we had no water. Our Rinnai tankless hot water heater started the same way though, with hot water for a few minutes and then would shut off with an error code 10. We just had to shut the hot water off and then back on, wait a minute or so and we had hot water back for a few minutes. Our unit would come on with a loud vibrating noise and remain until it shut off with an error code 10 (air flow fault). The solution was to remove the blower fan and blow out the squirrel cage. Ours had moths in it. We also vacuumed out the fan housing. Be careful to mark any wires you disconnect and take pictures before removal. Our unit is now almost silent when it comes on and supplies endless hot water.
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Rheem warrior 40 gal warrior


You could start by seeing if the thermostat is wide open. Sounds like it is on low or vacay mode. How far is the run between your heater and the bathing area. Might need to insualet some piping.

Sep 24, 2013 | Water Heaters

1 Answer

I have a noritz 069 M and what has been happening For the last few months is that while taking a shower the hot water will get super hot then shut off. The only way for it to come back on is to turn...


well it is time to get the the two way valves to both side, I would use only a product the noritz says to use.

Now if you cant get it you can get other products that break up lime and scale from you local store that sells plumbing product. I you can see I dont list a store or a product I am here to help you repair your heater, Not have you buy from one store or an other.

With that being said you can vinegar but dont use acid. If yuo "burn" the inside of the heat exhanger you jusy might be buying a new unit. also Please flush out the system with cold water for at least 10 mins. with the 3 way valves that should be very easy to do.

You also might have a lime build uo in the faucet also which will affect how they work. You may want to replaced and cleanout the cartridge and see if you have a lime build up. If that is the case you might want to think about a low priced water filter or softener.

Hope this helps you out and please dont for get to rate me, and Be safe

Tom

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1 Answer

The Noritz HW Heater has been tripping out some (usually whenever the shower is running, and someone turns on cold water). LED flashing three times. Any Ideas


This is probably a 16 error code. This code indicates the outlet water spiked above the set temperature for an extended period. It usually means the heater needs to be descaled or the manifold pressures need to be adjusted.

Mar 10, 2011 | Noritz 6.3 Gallon Residential Tankless...

1 Answer

Water becomes ice cold in the middle of a shower


Sounds like you have a problem with water flow. Since your ground water is warmer in the summer, you mix less hot and more cold in order to get the same warm temperature. If your hot water flow gets low enough, your tankless will start to "short cycle" in order to prevent scalding. Use one of these three methods to increase your water flow at the shower:

1) Clean your shower head and descale
2) Widen the hole in the showerhead's flow restrictor
3) Remove your flow restrictor entirely

Good luck!

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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...

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...

2 Answers

New water heater, shower hot then only warm water in 5 minutes


try this, set the bottom therostat if it is electric , 10 degrees hoter than the top is set , if gas have no ideas

Dec 05, 2008 | Water Heaters

2 Answers

Paloma Tankless water heater wont kick on


Tankless Water heaters have a automatic pilot and digital water temperature control system; you have to turn on the water in the house to get it to kick on that is unless you have a circulation pump on a timer. If the gas supply doesn't have atleast a 2" rating that with cause the tankless to malfunction because it's not getting enough gas pressure; certified professionals rarely make this mistake. Moreover, if you don't have a water softener you are using with the tankless you voided your warranty; the minirals clog the heat exchanger.

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