BoilerFaultCodes LED5 flashing High
Boiler Fault Code LED5 flashing
Also written as LED5FLASHING — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code LED5 flashing appears across 1 boiler brand and 5 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has switched itself off because the water pressure in your heating system has dropped too low to operate safely. (As reported on Ferroli Modena F)
Pick your boiler brand for the LED5 flashing fix
Source
Information for the LED5 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