Questions & Answers for: Noritz error code 99

noritz error code 99 I have a error99 on my tankless how do l reset it?

...error code of 71. What does that mean? When it calls for heat the unit lights and burns for about 2 seconds then code 71 flashes. The Noritz Manual shows fixed for the following error codes: 11 21 90 ...

...error code 99 N-084M once every few days shows blinking error code 99 and doesn't produce hot water. Unplugging/plugging it back fixes problem for the next few days. Flue is clean. No recent changes ...

...error code 99 on my Noritz tankless. How do l reset it please? Remove the bird's nest in the flue. The 10, 59, 90 and 99 error codes indicate that a Noritz heater has experienced a combustion ...