How much does it cost to fix boiler error code Green LED on?

Typical repair cost for the boiler Green LED on fault is £0-120 including labour.

Green LED on Low

Boiler Fault Code Green LED on

Also written as GREENLEDON — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Green LED on appears across 2 boiler brands 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 receiving power and is ready to work, but it hasn't been told to turn on the heating or hot water yet. (As reported on Ferroli Arean)

Pick your boiler brand for the Green LED on fix

Ferroli Green LED on 2 models Halstead Green LED on 1 model

Source

Information for the Green LED on 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