BoilerFaultCodesVokera E 29 Fault Code
Also written as E29 — same fault.
The Vokera E 29 fault code means: your boiler has detected that the internal fan responsible for safely venting fumes is not communicating correctly with the main control board.. It appears on 1 Vokera model in our database.
Technical description: Incorrect signal from fan
What causes the Vokera E 29 fault?
This fault occurs when the boiler's internal computer detects that the fan is not spinning at the correct speed to safely expel waste gases. It is usually caused by a mechanical failure within the fan motor or a buildup of dirt and debris that prevents the blades from turning freely. In some cases, the plastic tubes that measure air pressure can become blocked or split, sending a false 'stop' signal to the system.
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 E 29 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera E 29 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