Green LED flashing rapidly (8/sec) Low

Boiler Fault Code Green LED flashing rapidly (8/sec)

Also written as GREENLEDFLASHINGRAPIDLY8SEC — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code Green LED flashing rapidly (8/sec) 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 is currently in a normal pre-heat mode designed to provide hot water more quickly; this is a standard operating feature and not a fault. (As reported on Vokera Sabre 35HE)

Pick your boiler brand for the Green LED flashing rapidly (8/sec) fix

Vokera Green LED flashing rapidly (8/sec) 2 models

Source

Information for the Green LED flashing rapidly (8/sec) 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 7 July 2026