Boiler Fault Code d.62

Also written as D62 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026

Fault code d.62 appears across 1 boiler brand and 20 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning This code is simply an information display showing the current temperature setting for your heating during the night, rather than an error or fault with the boiler's operation. (As reported on Vaillant ecoTEC plus System)