BoilerFaultCodes P01 Low
Boiler Fault Code P01
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code P01 appears across 2 boiler brands and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning This code is not actually a fault, but an information message indicating that your boiler is currently displaying or adjusting the target temperature for your central heating radiators. (As reported on Alpha Pro Tec 24)
Pick your boiler brand for the P01 fix
Source
Information for the P01 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 7 July 2026