During the operation of fuel burner, if the diesel supply is not cut off in time, it will lead to rescue. After resuscitation, the flame sensor is in a high impedance state, the controller commands continuous fuel injection and pre blowing for about 10s, and then starts fuel injection. If the ignition can be established, the burner will be ignited again. If the diesel still cannot be supplied and cannot burn normally after eruption, the controller actively selects the method of continuous fuel injection and combustion after a delay of about 10s.

   The air supply motor also operates continuously and lights the red warning light. After waiting for 1 ~ 2min, after the thermal delay is completed, the red light can be reset manually and the next combustion process can be started actively. When the fuel supply is short, the burner is often accompanied by the sound of "blame and blame" with the sudden strength and weakness of the flame.

   At this time, the liquid in the oil supply pipe may be accompanied by bubbles, which makes the injection pressure unstable and the combustion unstable. In addition, when there are bubbles in the oil pipe, the operating resistance of the oil pump will increase or decrease, so it presents the above sound of "blame" and "blame". When the fire is unstable, it is often accompanied by black smoke.

   This is because the oil pressure cannot be established in case of lack of oil supply, so that the diesel atomization is not good and can not burn completely. The common causes of unstable ignition are: the oil suction pipe leaks, and the external air then enters the oil pipe to form bubbles; The oil suction pipe is narrow, blocked and compressed, which makes the oil circuit blocked and the diesel supply is short.