97 High

Biasi 97 Fault Code

The Biasi 97 fault code means: your boiler is not receiving enough electrical power to operate correctly, which usually means there is an issue with your home's electricity supply or the boiler's internal circuit board.. It appears on 2 Biasi 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: Power supply voltage low.
Typical repair cost £120-£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 97 fault code

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

Source

Biasi 97 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