How much does it cost to fix boiler error code Power ON (Green LED) blinking?

Typical repair cost for the boiler Power ON (Green LED) blinking fault is £80-150 including labour.

Power ON (Green LED) blinking High

Boiler Fault Code Power ON (Green LED) blinking

Also written as POWERONGREENLEDBLINKING — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Power ON (Green LED) blinking 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 has stopped working because it doesn't have enough water inside the system to operate safely. (As reported on Halstead Ace)

Pick your boiler brand for the Power ON (Green LED) blinking fix

Halstead Power ON (Green LED) blinking 2 models

Source

Information for the Power ON (Green LED) blinking 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