Noritz tankless water heater code Er61
Fan RPM sensor fault. Code Er61 means the same thing on all 2 Noritz series documented here — but the fix, and what it costs, is still worth reading for your exact unit.
What code Er61 means on each Noritz series
| Series | What it means | Verdict | Typical cost |
|---|---|---|---|
| NRCP | Fan RPM sensor fault | Call a pro | $250–$1,000 |
| NRCP Eco TOUGH | Fan RPM sensor fault | Call a pro | $250–$1,000 |
Each row opens the full page for that generation. We hold manuals for NRCP and NRCP Eco TOUGH, and each one gets its own reading of code Er61 — what Noritz documents, what you can safely check yourself, and what the repair should cost.
What each manual actually says
The table above compares 2 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 2 readings of code Er61 agree and where they part company.
NRCP — Fan RPM sensor fault
The sensor reporting fan speed is not working. Noritz's remedy is one line — check the fan motor — because on this appliance the speed sensor is part of the motor assembly. Without it the board cannot confirm the fan is running at the rate combustion needs.
NRCP Eco TOUGH — Fan RPM sensor fault
The sensor reporting fan speed is not working. Noritz's remedy is one line — check the fan motor — because the speed sensor is part of the motor assembly. Auto reset.
Does it matter which Noritz you have?
NRCP and NRCP Eco TOUGH all route code Er61 the same way: a professional, at $250–$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 Er61, so they are safe to work through before you have identified your exact unit. They also cost nothing.
- Listen for whether the fan spins up at all when the unit tries to start.
- Mention any recent noise from the fan when you book.
- Call a licensed professional.
That is 3 of the 3 checks documented for code Er61. 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 2 series that report code Er61, the model number on the rating label starts NRCP — match yours against the 4 listed below. You can also use the full model-number decoder.
Where this comes from
Source: Noritz Service Manual — NRCP111-DV / NRCP98-DV (Rev. 09/19) (p. 62), read Sep 2026 — the manufacturer's own documentation for this Noritz range.
Source: Noritz Service Manual — NRCP1112-DV / NRCP982-DV Eco TOUGH (Rev. 05/19) (p. 58), read Sep 2026 — the manufacturer's own documentation for this Noritz range.
Parts, guides and symptoms behind code Er61
Code Er61 on these 2 Noritz series points at 1 part and 3 symptoms, each named by the manufacturer's own procedure for this code.