How much does it cost to fix boiler error code Red LED five flash sequence?

Typical repair cost for the boiler Red LED five flash sequence fault is £80-120 including labour.

Red LED five flash sequence Low

Boiler Fault Code Red LED five flash sequence

Also written as REDLEDFIVEFLASHSEQUENCE — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Red LED five flash sequence 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 is currently running in a manual testing mode at its maximum power, which is likely a temporary setting used by an engineer during a service. (As reported on Worcester Bosch Greenstar CDi Compact)

Pick your boiler brand for the Red LED five flash sequence fix

Worcester Bosch Red LED five flash sequence 1 model

Source

Information for the Red LED five flash sequence 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