How much does it cost to fix boiler error code Red | On every 0.5 second?

Typical repair cost for the boiler Red | On every 0.5 second fault is £100-£350 including labour.

Red | On every 0.5 second High

Boiler Fault Code Red | On every 0.5 second

Also written as REDONEVERY05SECOND — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Red | On every 0.5 second 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 entered a safety lockout mode due to a critical internal fault or an ignition failure. (As reported on Vokera Compact HE)

Pick your boiler brand for the Red | On every 0.5 second fix

Vokera Red | On every 0.5 second 1 model

Source

Information for the Red | On every 0.5 second 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