LED 2 High

Boiler Fault Code LED 2

Also written as LED2 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code LED 2 appears across 3 boiler brands and 12 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler detects water flowing through the system even while the tap is turned off, causing it to run continuously or lock out to prevent overheating. (As reported on Ferroli Arean)

Pick your boiler brand for the LED 2 fix

Source

Information for the LED 2 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