1. If the primary air intake is insufficient or the damper is not adjusted properly, it can be realized by adjusting the damper;
2. If there are foreign matters in the nozzle, trachea and fire cover, clean the foreign matters in the nozzle, trachea and fire cover;
3, the kitchen is suitable for the gas source and the actual use of the gas source is inconsistent, change the kitchen or change the gas source.