Boiler Fault Code 00:2

Also written as 002 — same fault.

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

Fault code 00:2 appears across 1 boiler brand and 6 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning This code is not actually an error; it is simply a display message confirming your boiler is correctly set up to manage your standard heating and hot water. (As reported on Viessmann Vitodens 333)