How much does it cost to fix boiler error code Blinking RED?

Typical repair cost for the boiler Blinking RED fault is £120-250 including labour.

Blinking RED Medium

Boiler Fault Code Blinking RED

Also written as BLINKINGRED — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Blinking RED 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 that it is running too hot and has automatically slowed itself down to prevent any damage to its internal components. (As reported on Grant Vortex Eco)

Pick your boiler brand for the Blinking RED fix

Grant Blinking RED 5 models

Source

Information for the Blinking RED 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