YELLOW LED BLINKS Low

Boiler Fault Code YELLOW LED BLINKS

Also written as YELLOWLEDBLINKS — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code YELLOW LED BLINKS 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 currently running in a special engineer's test mode used to check emissions and is not experiencing a mechanical breakdown. (As reported on Vokera Compact HE)

Pick your boiler brand for the YELLOW LED BLINKS fix

Vokera YELLOW LED BLINKS 1 model

Source

Information for the YELLOW LED BLINKS 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