How much does it cost to fix boiler error code Flashing red?

Typical repair cost for the boiler Flashing red fault is £90-180 including labour.

Flashing red High

Boiler Fault Code Flashing red

Also written as FLASHINGRED — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Flashing red appears across 2 boiler brands and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has overheated, causing it to shut down automatically for safety. (As reported on Vokera Aquanova)

Pick your boiler brand for the Flashing red fix

Potterton Flashing red 2 models Vokera Flashing red 1 model

Source

Information for the Flashing 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