How much does it cost to fix boiler error code RED, GREEN blinking inverted?

Typical repair cost for the boiler RED, GREEN blinking inverted fault is £150-300 including labour.

RED, GREEN blinking inverted High

Boiler Fault Code RED, GREEN blinking inverted

Also written as REDGREENBLINKINGINVERTED — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code RED, GREEN blinking inverted appears across 1 boiler brand and 5 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has detected an internal electrical issue affecting the fuel delivery system, which is preventing it from firing up safely. (As reported on Grant Vortex Eco)

Pick your boiler brand for the RED, GREEN blinking inverted fix

Grant RED, GREEN blinking inverted 5 models

Source

Information for the RED, GREEN blinking inverted 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 27 April 2026