BoilerFaultCodesVokera A41 Fault Code
The Vokera A41 fault code means: your boiler has detected that the water pressure is getting too low to operate correctly and needs to be topped up.. It appears on 3 Vokera models in our database.
Technical description: Fill the system (transitional)
DIY fix possible
Locate the filling loop (usually a silver braided hose with small valves) underneath the boiler.Slowly open the valves until you hear water flowing into the unit.Watch the pressure gauge and close the valves tightly once it reaches 1.5 bar.
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Vokera models that show the A41 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera A41 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