BoilerFaultCodes LED 5 (Permanent light) High
Boiler Fault Code LED 5 (Permanent light)
Also written as LED5PERMANENTLIGHT — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code LED 5 (Permanent light) 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 is not receiving the electrical power it needs to turn on, which is usually caused by a tripped switch or a power supply issue. (As reported on Ferroli Domina 102)
Pick your boiler brand for the LED 5 (Permanent light) fix
Source
Information for the LED 5 (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