031 Unknown

Boiler Fault Code 031

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 031 appears across 2 boiler brands and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Pick your boiler brand for the 031 fix

Ideal 031 1 model Navien 031 2 models

Source

Information for the 031 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