92 High

Alpha 92 Fault Code

The Alpha 92 fault code means: your boiler is struggling to breathe properly and has hit the limit on how much it can adjust its internal air supply to stay running safely.. It appears on 6 Alpha models in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Fan speed max. correction. The system has reached the maximimum possible correction limit
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 92 fault code

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

Source

Alpha 92 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