125.When air limit fuel alarm will appear and how to handle it?

During Load demand variations, if the airflow cannot be maintained as per the fuel demand (refer lead-lag control), the fuel flow will be limited by actual airflow--air limit fuel alarm. In such a case, the load demand (fuel flow demand) has to be reduced OR additional air fans(FD) have to be started to increase air flow. We should also check healthiness of Oxygen analyzer as the error in its reading can give wrong airflow values for control.