BoilerFaultCodes D.002 Low
Boiler Fault Code D.002
Also written as D002 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code D.002 appears across 1 boiler brand and 10 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning This is a temporary pause where the boiler rests for a few minutes to prevent any unnecessary wear and tear from switching the burner on and off too frequently. (As reported on Vaillant ecoTEC Pro)
Pick your boiler brand for the D.002 fix
Source
Information for the D.002 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