How much does it cost to fix boiler error code Green/Red - blinking?

Typical repair cost for the boiler Green/Red - blinking fault is £90-180 including labour.

Green/Red - blinking Low

Boiler Fault Code Green/Red - blinking

Also written as GREENREDBLINKING — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 31 August 2026

Fault code Green/Red - blinking appears across 2 boiler brands and 4 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is notifying you that it is currently running, but it has detected a minor inconsistency in how it is circulating water around your system. (As reported on Worcester Bosch Greenstar 2000)

Pick your boiler brand for the Green/Red - blinking fix

Grant Green/Red - blinking 3 models Worcester Bosch Green/Red - blinking 1 model

Source

Information for the Green/Red - blinking 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 31 August 2026