P06 01 Low

Biasi P06 01 Fault Code

Also written as P0601 — same fault.

The Biasi P06 01 fault code means: your boiler is currently running in a special test mode used by engineers to check its performance at its lowest setting.. It appears on 1 Biasi model in our database.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description: Activation of the chimney sweep function at minimum output
Typical repair cost £0-80 (including labour)

DIY fix possible

Press the 'Reset' button on the control panel to return to normal operation.Turn the boiler power supply off and then back on again at the fused spur.If the code persists, ensure the mode selector dial is not stuck in the test position.

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Biasi models that show the P06 01 fault code

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

Source

Biasi P06 01 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