BoilerFaultCodes Low water pressure LED flash High
Boiler Fault Code Low water pressure LED flash
Also written as LOWWATERPRESSURELEDFLASH — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Low water pressure LED flash 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 has detected that there is not enough water in the heating system to operate safely. (As reported on Glow-worm Compact)
Pick your boiler brand for the Low water pressure LED flash fix
Source
Information for the Low water pressure LED flash 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