Boiler Fault Code BURNER STAYS ON

Also written as BURNERSTAYSON — same fault.

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

Fault code BURNER STAYS ON appears across 1 boiler brand and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler's internal burner is failing to switch off even when you are not using hot water or heating, which suggests a mechanical component is stuck or blocked. (As reported on Chaffoteaux Britony II 30FF)