LED 5 Flashing High

Boiler Fault Code LED 5 Flashing

Also written as LED5FLASHING — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code LED 5 Flashing appears across 1 boiler brand and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler's electronic control centre is failing to communicate properly, which has caused the system to shut down for safety. (As reported on Ferroli Falcon)

Pick your boiler brand for the LED 5 Flashing fix

Ferroli LED 5 Flashing 3 models

Source

Information for the LED 5 Flashing 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