Unknown
030E on Navien NCB300

Navien NCB300 fault code 030E

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

What the manual says

Manufacturer manual

Heat exchanger bimetal overheat message (cleared manually)

From this model's manual
Verified against the Navien/Navien Ncb300 Combi Service Manual30k 250328 Pdf installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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All 55 fault codes on the NCB300

Seeing a different code? Every code this model can display, in one place.

001003004004E012012E016016E030031046047109205302407515517593594615740782E001E003E004E012E016E030E031E046E047E109E110E205E218E302E351E352E353E407E421E439E515E517E593E594E598E615E740E782E783E787E788

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