94 Emergency

Alpha 94 Fault Code

The Alpha 94 fault code means: your boiler has detected an issue with the air or exhaust flow, meaning it cannot safely burn gas, so it has shut down to protect your home.. It appears on 6 Alpha models in our database.

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description: Fan anomaly due to combustion issues - The anomaly is reported due to issues in the combustion circuit
Typical repair cost £150-350 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Find a Gas Safe engineer

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Alpha models that show the 94 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Alpha 94 fault code information on this page is sourced and cross-checked against the official Alpha service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026