BoilerFaultCodesVokera 94 Fault Code
The Vokera 94 fault code means: your boiler has detected a minor internal communication error and and is currently attempting to automatically reset itself.. It appears on 3 Vokera models in our database.
Technical description: Temporary fault code (Refer to section 7.10)
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.
DIY fix possible
Wait up to 10 minutes to see if the boiler clears the code automaticallyTurn the mode selector switch to the 'OFF/RESET' position and then back to 'ON'Check if the display returns to the standard temperature output
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Gas Safe Register →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 27 April 2026