How much does it cost to fix Alpha error code 96?

Typical repair cost for the Alpha 96 fault is £120-250 including labour.

96 Emergency

Alpha 96 Fault Code

Q: What does the Alpha 96 fault code mean?

Your boiler has detected an obstruction in the pipe that removes exhaust gases, meaning it cannot safely vent and has shut down to prevent a carbon monoxide hazard.

The Alpha 96 fault code means: your boiler has detected an obstruction in the pipe that removes exhaust gases, meaning it cannot safely vent and has shut down to prevent a carbon monoxide hazard.. It appears on 10 Alpha models in our database.

Technical description: Blocked flue or restriction - This occurs in the event an obstruction is detected in the flue system

Typical repair cost £120-250 (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 96 fault code

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

Source

Alpha 96 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