How much does it cost to fix boiler error code E27?

Typical repair cost for the boiler E27 fault is £150-300 including labour.

E27 High

Boiler Fault Code E27

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code E27 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 correctly detect or manage the level or flow of water within its internal storage system, which is preventing it from heating your home properly. (As reported on Ariston Bravo 24 MFFI)

Pick your boiler brand for the E27 fix

Ariston E27 2 models

Source

Information for the E27 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