LED 5 bar (Permanent light) High

Boiler Fault Code LED 5 bar (Permanent light)

Also written as LED5BARPERMANENTLIGHT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code LED 5 bar (Permanent light) 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 failing to detect a stable electrical supply, which is preventing it from starting up or operating correctly. (As reported on Ferroli F24)

Pick your boiler brand for the LED 5 bar (Permanent light) fix

Ferroli LED 5 bar (Permanent light) 1 model

Source

Information for the LED 5 bar (Permanent light) 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