How much does it cost to fix boiler error code 127?

Typical repair cost for the boiler 127 fault is £0-120 including labour.

127 Medium

Boiler Fault Code 127

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code 127 appears across 6 boiler brands and 8 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has failed to heat the stored water to a high enough temperature to kill off bacteria, usually because the hot water hasn't been used for a while or the heating cycle timed out. (As reported on ECA FELiS FL 50 HM)

Pick your boiler brand for the 127 fix

Baxi 127 3 models ECA 127 1 model Ideal 127 1 model Main 127 1 model Navien 127 1 model Worcester Bosch 127 1 model

Source

Information for the 127 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