Your boiler has shut down because it cannot safely ignite or maintain its flame, often due to a fuel supply issue or a dirty component.

Technical description

The burner control box lockout safety feature operates automatically if a fault occurs in the burner operation. The light on the front of the burner will illuminate. Potential causes: An interruption in the fuel supply, an electrical supply fault, a fault with the burner or its safety control system, the failure of a burner component, worn or dirty oil nozzle, or incorrect flue installation.