BoilerFaultCodesVokera 94 Fault Code
The Vokera 94 fault code means: your boiler is struggling to detect that it is safely draining away the water created during the heating process, causing it to stop working to prevent internal damage.. It appears on 3 Vokera models in our database.
Technical description: condense sensor error
What causes the Vokera 94 fault?
This fault occurs when the boiler's internal computer experiences a brief moment of confusion or data interference while talking to its own sensors. It is essentially a software 'hiccup' where the main control board loses its place for a split second and needs to recalibrate. In most cases, it is a one-off event caused by a minor electrical fluctuation or a temporary communication delay within the system.
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 94 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera 94 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