BoilerFaultCodesVokera Alarm system water pressure Fault Code
Also written as ALARMSYSTEMWATERPRESSURE — same fault.
The Vokera Alarm system water pressure fault code means: your boiler has detected that the water pressure in your heating system is either too low or too high for it to operate safely.. It appears on 5 Vokera models in our database.
Technical description: Alarm system water pressure
DIY fix possible
Locate the filling loop (usually a silver braided hose with one or two valves) underneath the boiler.Open the valve(s) slowly to allow water into the system until the pressure gauge on the front of the boiler reads between 1.0 and 1.5 bar.Close the valve(s) tightly to stop the flow of water.
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Vokera models that show the Alarm system water pressure fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera Alarm system water pressure fault code information on this page is sourced and cross-checked against the official Vokera service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026