BoilerFaultCodes B LED 5 Low
Boiler Fault Code B LED 5
Also written as BLED5 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code B LED 5 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 is currently in a temporary self-imposed waiting period and should resume normal operation automatically once the internal timer finishes. (As reported on Ferroli Arean)
Pick your boiler brand for the B LED 5 fix
Source
Information for the B LED 5 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