How much does it cost to fix boiler error code E480?

Typical repair cost for the boiler E480 fault is £150-250 including labour.

E480 High

Boiler Fault Code E480

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code E480 appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is struggling to accurately read the temperature of the water inside the storage tank, which means it cannot heat your water reliably. (As reported on Navien NCM 1130HH)

Pick your boiler brand for the E480 fix

Navien E480 2 models

Source

Information for the E480 fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026