BoilerFaultCodesVokera E65 Fault Code
The Vokera E65 fault code means: your boiler is unable to blow out the waste gases properly because the fan is not spinning fast enough to stay safe.. It appears on 1 Vokera model in our database.
Technical description: Not enough fan driving force
What causes the Vokera E65 fault?
This fault occurs when the boiler's internal computer detects that the fan isn't reaching the speed required to safely clear exhaust fumes from the system. It is usually caused by the fan motor wearing out over time or a communication failure where the control board can no longer tell the fan how fast to spin.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Vokera models that show the E65 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera E65 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