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

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

Flashing yellow High

Boiler Fault Code Flashing yellow

Also written as FLASHINGYELLOW — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Flashing yellow appears across 1 boiler brand and 1 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 issue with the way it is venting or drawing air, which has safely stopped the unit from firing up. (As reported on Vokera Aquanova)

Pick your boiler brand for the Flashing yellow fix

Vokera Flashing yellow 1 model

Source

Information for the Flashing yellow 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