BoilerFaultCodes PP3 High
Boiler Fault Code PP3
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code PP3 appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has stopped working because an internal sensor that monitors the temperature of the heating coil is no longer sending a correct reading. (As reported on Grant Vortex)
Pick your boiler brand for the PP3 fix
Source
Information for the PP3 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