BoilerFaultCodes P (ΔP-V) Low
Boiler Fault Code P (ΔP-V)
Also written as PPV — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code P (ΔP-V) appears across 1 boiler brand and 4 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is currently set to a specific operational mode that balances water flow and energy use, which is normal behavior rather than a fault. (As reported on Alpha Intec 28GS)
Pick your boiler brand for the P (ΔP-V) fix
Source
Information for the P (ΔP-V) 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