How much does it cost to fix Biasi error code 22 +?

Typical repair cost for the Biasi 22 + fault is £180-350 including labour.

22 + Emergency

Biasi 22 + Fault Code

Q: What does the Biasi 22 + fault code mean?

Your boiler has detected a flame that continues to burn even after the gas valve should have closed, which is a safety fault that requires a professional inspection.

Also written as 22 — same fault.

The Biasi 22 + fault code means: your boiler has detected a flame that continues to burn even after the gas valve should have closed, which is a safety fault that requires a professional inspection.. It appears on 2 Biasi models in our database.

Technical description: EVG lockout (flame after closing valve Ref. EVG).

Typical repair cost £180-350 (including labour)

Engineer required

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

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Biasi models that show the 22 + fault code

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

Source

Biasi 22 + fault code information on this page is sourced and cross-checked against the official Biasi service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026