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
The same code number can mean something different on another series — make sure you're reading the page for your exact unit: