Low
PO on Biasi Rinnova Adaptive Combi

Your boiler is simply finishing a standard cooling cycle and is not currently experiencing a breakdown.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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

Pump active for the post-circulation phase (flashing PO + flashing temperature).

DIY fix possible

Wait for the boiler to finish circulating water (usually 1-5 minutes).Monitor the display until the PO code disappears and the temperature returns to normal.No further action is required as this is normal operation.

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