How much does it cost to fix Biasi error code E97?

Typical repair cost for the Biasi E97 fault is £100-£350 including labour.

E97 High

Biasi E97 Fault Code

Q: What does the Biasi E97 fault code mean?

Your boiler has detected that the electricity supply arriving at the unit is too low for it to operate safely and has shut down to protect its internal parts.

The Biasi E97 fault code means: your boiler has detected that the electricity supply arriving at the unit is too low for it to operate safely and has shut down to protect its internal parts.. It appears on 4 Biasi models in our database.

Technical description: Power supply voltage low.

Typical repair cost £100-£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 E97 fault code

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

Advance 25C Repair: £280-450
Antares Combi Repair: £80-£150
Antares System Repair: £100-£350
Rinnova Adaptive Combi Repair: £100-£350

Source

Biasi E97 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