d.83 Low

Boiler Fault Code d.83

Also written as D83 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code d.83 appears across 3 boiler brands and 41 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 total number of times your boiler has started to heat water, rather than indicating a fault or problem with your heating system. (As reported on Vaillant Turbomax 824/828)

Pick your boiler brand for the d.83 fix

Glow-worm d.83 8 models Heatline d.83 7 models Vaillant d.83 26 models

Source

Information for the d.83 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 31 August 2026