20 Most Recent Noritz 6.9 Gallon Residential Tankless Water Heater - N-069M Questions & Answers

you need to test the elements and stat for heatert

Noritz 6.9... | Answered on May 19, 2017

Do you have a well our on city water? Check in coming water pressure make sure it is not over 60psi

Noritz 6.9... | Answered on Sep 24, 2014

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.

Noritz 6.9... | Answered on Dec 14, 2013

Turn off your incoming cold water to the tankless. (you should probably do the same with your hot water out line just in case). find the black cap that screws sideways into the cold water connection on the bottom of the unit. unscrew the black cap. the filter is supposed to be attached but it almost always comes off. grab a screw driver and stick it in the hole that the black cap was covering. angle it and drag the filter out. you may end up putting a hole in the filter this way but it doesn't matter if you are replacing the filter anyways. once you pull it out make sure you have a little rubber washer on the new filter or else transfer from the old one. the new filter should actually attach itself nicely onto the black cap so once you've removed the old one all you have to do is screw the black cap/filter combo piece back onto the cold water connection and you're done.

I suppose I should mention you will want to have a bucket under the pipes and everything because your unit will empty all the water that was in the unit out of that hole.

Noritz 6.9... | Answered on Dec 14, 2013

is there a check valvle on hot water side of heater,a flow restriction of some sort, water pressure to the heater, a filter in the line, line pressure in the heater kicks out burner, when you turn on the water, line pressure drops, heater comes on, when you turn on water in other part of house, heater should not fire, so there has to be a check valve somewhere,in heater?

Noritz 6.9... | Answered on Oct 03, 2013

I feel your pain. I am experiencing the same issue which started about 3 weeks ago. First it happened twice that first week and we discounted it. Now that my heater has been flushed the same issue is occuring. I called Noritz 3-4 times now and they are saying that I may have high manollowifold pressure and should have that checked.

FollowUp: Plumber determined my Natural Gas inlet line was too small. He Tee'd off before my manifold to other appliances and fed with a 3/4 line. Issue resolved and it has been trouble free since. (Updated 2/2017)

Noritz 6.9... | Answered on Feb 22, 2011

It is a are intake problem what happens is you get frost cristal bildup in the airintake you could take the front cover off dering the winter and you wont have the problem.

Noritz 6.9... | Answered on Jan 20, 2011

F76 is a communication error. It usually occurs if you connect or disconnect a quick connect cable or remote control when the tankless heater is connected to electricity. (If you have a quick connect system, make sure you only have 1 remote and 1 quick connect cable.) To get rid of the code, try disconnecting electricity for 20 seconds, reconnecting electricity, and turning the remote on. If the code returns, you may need to replace your quick connect cable, remote cable, or even remote control

Noritz 6.9... | Answered on Sep 28, 2010

F76 is a communication error between two quick connected heaters. To clear the code, disconnect power from both heaters, wait 20 seconds, then reconnect power.

Noritz 6.9... | Answered on Aug 04, 2010

It sounds like your GFI is tripping. There are two common reasons for this to happen 1) plugged into another GFI 2) moisture on the gfi. I'd look for evidence of a water leak which is tripping your gfi. Look for puddles, water spotting, water hardness, etc.

Noritz 6.9... | Answered on Jul 15, 2010

1/ check overheat stat 2/ check fan esp the little hose at the fan area for pinhole best of luck

Noritz 6.9... | Answered on Nov 02, 2009

If the unit is functioning properly, then you need to contact your utility company to see about upgrading the size of the gas line and meter to your house, and possibly the lines IN th house. It may be cheaper to go back to a tank type water heater despite the potential energy savings with a tankless.

Noritz 6.9... | Answered on Oct 09, 2009

Call the manufacturer to order one. It should be anywhere from 8-11 dollars. The manufacturer's number is usually printed on a sticker on the heater.

Noritz 6.9... | Answered on Aug 18, 2009

Electronics are very sensitive to temp, so I agree with the tech.

Noritz Water... | Answered on Oct 31, 2019

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