How much does it cost to fix Biasi error code P06?

Typical repair cost for the Biasi P06 fault is £0 including labour.

P06 Low

Biasi P06 Fault Code

Q: What does the Biasi P06 fault code mean?

Your boiler is currently running in a special test mode used by engineers to check emissions or adjust power output, meaning it is not in its normal operating state.

The Biasi P06 fault code means: your boiler is currently running in a special test mode used by engineers to check emissions or adjust power output, meaning it is not in its normal operating state.. It appears on 2 Biasi models in our database.

Technical description: Parameter P06 - Chimney sweep function / output adjustment

Typical repair cost £0 (including labour)

DIY fix possible

Locate the selector dial or menu buttons on the control panel.Turn the selector away from the 'test' or 'chimney' symbol back to the 'On' or 'Auto' position.Wait for the boiler to cycle through its shutdown sequence to return to normal operation.

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Biasi models that show the P06 fault code

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

Source

Biasi P06 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