How much does it cost to fix Alpha error code 94?

Typical repair cost for the Alpha 94 fault is £150-350 including labour.

94 Emergency

Alpha 94 Fault Code

Q: What does the Alpha 94 fault code mean?

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.

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 10 Alpha models in our database.

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.

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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 27 April 2026