Boiler Fault Code Power ON LED (Green)

Also written as POWERONLEDGREEN — same fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026

Fault code Power ON LED (Green) appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is working perfectly fine and is simply waiting for you to turn on a tap or adjust your heating settings. (As reported on Halstead Ace High)