How much does it cost to fix boiler error code B LED 6?

Typical repair cost for the boiler B LED 6 fault is £120-250 including labour.

B LED 6 High

Boiler Fault Code B LED 6

Also written as BLED6 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code B LED 6 appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has stopped working because it has detected a problem with either its water pressure, internal temperature sensors, or safety thermostats. (As reported on Ferroli Arean)

Pick your boiler brand for the B LED 6 fix

Ferroli B LED 6 2 models

Source

Information for the B LED 6 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