BoilerFaultCodesVokera >3.0 bar Fault Code
Also written as 30BAR — same fault.
The Vokera >3.0 bar fault code means: your boiler has detected that the water pressure inside the system has become dangerously high, which can put unnecessary strain on the internal components.. It appears on 4 Vokera models in our database.
Technical description: Low power supply voltage
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Vokera models that show the >3.0 bar fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera >3.0 bar 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