BoilerFaultCodes Alarm system water pressure High
Boiler Fault Code Alarm system water pressure
Also written as ALARMSYSTEMWATERPRESSURE — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Alarm system water pressure appears across 1 boiler brand and 5 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 the water pressure in your heating system is either too low or too high for it to operate safely. (As reported on Vokera Excel)
Pick your boiler brand for the Alarm system water pressure fix
Source
Information for the Alarm system water pressure 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