Problem with Noritz Tankless

by Sharon
(DuQuoin, IL)

I built a new home in 2007 and installed a Noritz tankless hot water heater. It now shuts off in the middle of a shower and the water is cold. The plumber told me to get out of the shower and hit the on/off button and wait for it to heat up again.

However, the remote unit is in the master bath. What are my guests supposed to do if they are showering in the back bathroom and no one is there to hit the on/off button on the remote? Also, wondering about the warranty on the Noritz. I can't find a dealer in the area who has a rep to help me. It's been doing this for over a year now!

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Sep 02, 2018
Halfway through the shower
by: Gary

I have a Noritz model N-0631S installed 10 years ago by a plumber. For those 10 years, I loved it. The problem now is, the hot water turns cold halfway through the shower and very little pressure to no hot water pressure. My body full of soap I turned the shower off. Wait a while then turn on the hot water. It turns hot again. Sometimes I get out of the shower and unplug the unit for a minute. Plug it back in the back comes the hot water. Called the co. that installed it. Came over and he did some troubleshooting. I told him, if I would remove the shower head, it would never act up. He told me the shower head was scaled up. So I went and got a new shower head. I thought that did the trick but 5 days later the same thing all over again. Very frustrating. Been taking showers without a shower head for 6 months and not once had a problem..Help me, please. Thank you

Apr 15, 2018
Tankless units common fault
by: Marshall

Unfortunately, this is very common with many mfgs tankless units. You can try flushing the unit with vinegar to descale the pipes which may avoid some of the fault codes for a short period of time, or replacing sensors on the unit.

7 years of needing "shower buddies" standing by to reset the unit were enough for us. When the gas solenoid went out that was the last straw and we junked our Bosch unit.

Happy to have a tank unit again, no change to utility bills and so much more reliable.

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