BoilerFaultCodes DP430 Low
Boiler Fault Code DP430
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code DP430 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 notifying you that it has scheduled a routine automatic cleaning cycle to keep your hot water supply hygienic. (As reported on Baxi 400 Combi 2)
Pick your boiler brand for the DP430 fix
Source
Information for the DP430 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