Navien NPE Fault codes & diagnostics

0 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.

Water Heater Natural GasLPG 17-30 kW 2012-present
Download the Navien NPE manual The official installation & service manual (PDF) — the exact document these fault codes were verified against. PDF

The fault code is already on your display

Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →

Status & diagnostic codes

1 operating states & engineer diagnostics

Not faults — these are normal operating states. Tap to expand.

760 Diagnostic Your boiler is reminding you that it is time for its routine maintenance flush to clear out a build-up of minerals from your water supply.
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