BoilerFaultCodesVokera E11 Fault Code
The Vokera E11 fault code means: your boiler's main control board has encountered an internal electronic error and can no longer manage the system safely.. It appears on 1 Vokera model in our database.
Technical description: Internal fault (PCB)
What causes the Vokera E11 fault?
This fault occurs when the boiler's central brain, the printed circuit board, suffers an internal memory or communication failure. It is typically caused by electrical components wearing out over time or damage from a sudden power surge in the home’s electrical supply.
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 E11 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera E11 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