Navien NPE-2 Code E060
Dual venturi fault. The venturi is the throat where combustion air and gas are mixed; the NPE uses a dual venturi arrangement, and this code says it is not behaving. Navien lists no owner-level check — contact technical support.
Call a proThe verdict
Call a licensed plumber
Air-fuel mixing hardware on a gas appliance. There is nothing to check from the outside and nothing to reset your way out of. Expect a diagnostic visit, and a gas valve or venturi assembly if it is confirmed.
Typical cost: $200–$1,100
US estimate for parts and labor. Prices vary by region and by who does the work — see how we estimate costs.
What the manual says
The meaning above is transcribed from the manufacturer's diagnostic documentation for the NPE-2 — not averaged across the brand.
Source: Navien NPE-2 User's Information Manual (p. 17), read Aug 2026 — the manufacturer's own documentation for this exact series.
What you can safely check
Before anything else: if you smell gas, stop here, leave, and call your gas utility.
- Turn the heater off and leave it off.
- If you smell gas, leave the building and call your gas utility from outside.
- Contact your installer or Navien technical support.
Frequently asked questions
What does a venturi actually do?
It is a narrowing in the air path. Air speeding up through it drops in pressure, which draws gas in at a proportion set by the geometry — that is how the burner gets a consistent air-fuel mixture across its firing range.
Code E060 on other Navien series
Other Navien series report code E060 under the same fault name, but each manual is transcribed separately and they do not read alike: