LED 5 (DHW) High

Boiler Fault Code LED 5 (DHW)

Also written as LED5DHW — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code LED 5 (DHW) 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's electronic control brain is experiencing a persistent internal error that prevents it from providing hot water or heating correctly. (As reported on Ferroli Arean)

Pick your boiler brand for the LED 5 (DHW) fix

Ferroli LED 5 (DHW) 2 models

Source

Information for the LED 5 (DHW) 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