How much does it cost to fix boiler error code D.047?

Typical repair cost for the boiler D.047 fault is £120-200 including labour.

D.047 Low

Boiler Fault Code D.047

Also written as D047 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code D.047 appears across 1 boiler brand and 7 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is struggling to read the temperature from the sensor installed outside your home, so it is using a default setting to keep your heating running. (As reported on Vaillant ecoTEC Plus 832)

Pick your boiler brand for the D.047 fix

Vaillant D.047 7 models

Source

Information for the D.047 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