Unknown
E205 on Navien NCB500

Navien NCB500 fault code E205

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

What the manual says

Manufacturer manual

Inaccurate water temperatures from inside the boiler

From this model's manual
Verified against the Navien/Navien Ncb500 System Service Manual En 250331 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 52 fault codes on the NCB500

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

001003004012016030031046047109205218302352353515517593594615740782E001E003E004E012E016E030E031E046E047E109E110E218E291E302E351E352E353E480E515E517E593E594E598E615E740E782E783E787E788

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