Noritz tankless water heater code 61
Fan motor fault. Code 61 means the same thing on all 5 Noritz series documented here — but the fix, and what it costs, is still worth reading for your exact unit.
What code 61 means on each Noritz series
| Series | What it means | Verdict | Typical cost |
|---|---|---|---|
| EZ Series & NCC199CDV | Fan motor fault | Call a pro | $300–$1,000 |
| NCC199 & NRC111 | Fan motor fault | Call a pro | $300–$1,000 |
| NR50, NR66 & NR71 | Fan motor fault | Call a pro | $300–$1,000 |
| NR98 & NR111 | Fan motor fault | Call a pro | $300–$1,000 |
| NRC Series | Fan motor fault | Call a pro | $300–$1,000 |
Each row opens the full page for that generation. We hold manuals for EZ Series & NCC199CDV, NCC199 & NRC111, NR50, NR66 & NR71, NR98 & NR111 and NRC Series, and each one gets its own reading of code 61 — what Noritz documents, what you can safely check yourself, and what the repair should cost.
What each manual actually says
The table above compares 5 series in four columns, which is enough to route you and not enough to explain anything. This is the Noritz wording behind each row, one entry per manual, so you can see where the 5 readings of code 61 agree and where they part company.
EZ Series & NCC199CDV — Fan motor fault
The combustion fan is not turning as expected. Noritz checks that the fan rotates, reads the pulse frequency from the fan's rotational frequency sensor, checks for an improper connection, and measures the voltage from the circuit board. The fan on this range answers to two high limit switches rather than one — code 20 on the primary heat exchanger and code 21 in the burner chamber — and Noritz pulls both into the code 71 diagnosis. A fan fault here sits inside a tighter safety envelope than on the older ranges.
NCC199 & NRC111 — Fan motor fault
The combustion fan is not turning as expected. Noritz checks that the fan rotates, reads the pulse frequency from the fan rotational frequency sensor, looks for an improper connection, and measures the voltage from the circuit board.
NR50, NR66 & NR71 — Fan motor fault
The combustion fan is not turning as expected. Noritz checks that the fan rotates, reads the pulse frequency from the fan rotational frequency sensor, looks for an improper connection, and measures the voltage from the circuit board. Four flashes on an NR71 or N-0631S with no remote controller — and Noritz adds a note worth having: turning off the water will only reset the unit if there is no remote controller installed.
NR98 & NR111 — Fan motor fault
The combustion fan is not turning as expected. Noritz checks that the fan rotates, reads the pulse frequency from the fan rotational frequency sensor, looks for an improper connection, and measures the voltage from the circuit board. Fan faults matter more at the top of this range than the bottom. The NC380-SV-ASME and N-1321M-ASME are commercial units, and on those Noritz adds a separate pressure switch code, 21, that watches the same air path from the other end.
NRC Series — Fan motor fault
The combustion fan is not turning as expected. Noritz checks that the fan rotates, reads the pulse frequency from the fan's rotational frequency sensor, looks for an improper connection, and measures the voltage the circuit board is supplying. Two of the three display-window codes point at the fan; the third, 612, Noritz attributes to circuit board failure.
Does it matter which Noritz you have?
EZ Series & NCC199CDV, NCC199 & NRC111, NR50, NR66 & NR71, NR98 & NR111 and NRC Series all route code 61 the same way: a professional, at $300–$1,000. That makes it one of the Noritz numbers you can act on before working out which unit you own.
What to check first, whatever your series
These checks are on the manufacturer's list for every Noritz series that reports code 61, so they are safe to work through before you have identified your exact unit. They also cost nothing.
- Leave the unit off and call a licensed professional.
That is 1 of the 3 checks documented for code 61. The rest differ by generation, so if none of those explains it, go to your own series above.
Which Noritz do you have?
On the 5 series that report code 61, the model number on the rating label starts EZ, NCC, GQ, N and NRC — match yours against the 43 listed below. You can also use the full model-number decoder.
Where this comes from
Source: Noritz Service Manual — NRC663 FSV, EZ98DV, EZ111DV, NCC199CDV (Rev. Oct 2017) (p. 32), read Sep 2026 — the manufacturer's own documentation for this Noritz range.
Source: Noritz Service Manual — NR50 / NR66 / NR71 / NR98 / NCC199 / NRC111 / NR111 / NC380 (Rev. July 2011) (p. 55), read Sep 2026 — the manufacturer's own documentation for this Noritz range.
Source: Noritz Service Manual — NR50 / NR66 / NR71 / NR98 / NCC199 / NRC111 / NR111 / NC380 (Rev. July 2011) (p. 54), read Sep 2026 — the manufacturer's own documentation for this Noritz range.
Source: Noritz Service Manual — NR50 / NR66 / NR71 / NR98 / NCC199 / NRC111 / NR111 / NC380 (Rev. July 2011) (p. 56), read Sep 2026 — the manufacturer's own documentation for this Noritz range.
Source: Noritz Service Manual — NR501-OD, NR662-OD, NRC661, NRC711 (Rev. Dec 2013) (p. 28), read Sep 2026 — the manufacturer's own documentation for this Noritz range.
The same number on other brands
Code 61 is not a standard across the industry — every manufacturer publishes its own table. If your unit is not a Noritz, this number means something else entirely:
Parts, guides and symptoms behind code 61
Code 61 on these 5 Noritz series points at 2 parts and 3 symptoms, each named by the manufacturer's own procedure for this code.