How much does it cost to fix boiler error code PO?

Typical repair cost for the boiler PO fault is £0 including labour.

PO Low

Boiler Fault Code PO

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code PO appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is simply finishing a standard cooling cycle and is not currently experiencing a breakdown. (As reported on Biasi Rinnova Adaptive Combi)

Pick your boiler brand for the PO fix

Biasi PO 1 model

Source

Information for the PO fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026