P00 Low

Biasi P00 Fault Code

The Biasi P00 fault code means: your boiler has entered its internal settings menu and is waiting for a technician to program the controls.. It appears on 2 Biasi models 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: Programming mode entry code
Typical repair cost £0-80 (including labour)

DIY fix possible

Check if any buttons on the control panel are stuck or being pressed down.Turn the selector dial to the 'Off/Reset' position for 30 seconds.Turn the dial back to the 'Winter' or 'Summer' setting to exit the menu.

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Biasi models that show the P00 fault code

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

Source

Biasi P00 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 7 July 2026