Error 02 High

Boiler Fault Code Error 02

Also written as ERROR02 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code Error 02 appears across 1 boiler brand and 8 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is trying to start up but is failing to light the burner, meaning you currently have no heating or hot water. (As reported on Atag Premier)

Pick your boiler brand for the Error 02 fix

Source

Information for the Error 02 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 27 April 2026