BoilerFaultCodes Pd High
Boiler Fault Code Pd
Also written as PD — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Pd 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 stopping itself from working because the water temperature inside is getting too hot, similar to a car engine overheating. (As reported on Ideal HP290)
Pick your boiler brand for the Pd fix
Source
Information for the Pd 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