1. First of all, it may be caused by internal reasons of the induction cooker, including temperature sensor open circuit, short circuit protection, IGBT tube overvoltage protection and IGBT overcurrent protection. After these problems appear, you don't have to worry, just restart later.

2. It is also possible that the induction cooker does not heat due to external reasons, including the external grid voltage is higher or lower than the working voltage range of the induction cooker, then the internal protection mechanism of the induction cooker will forcibly cut off the heating. If the internal temperature of the induction cooker is too high, the start of the temperature alarm mechanism will also forcibly turn off the heating function. There is also a pot to prevent dry burning, which will force power failure.

3, induction cooker is intermittent heating, IGBT over-current protection, over-current protection forced to reduce the output power or directly suspend work, delay for a period of time before starting to enter the working state. During this protective action, there will be a phenomenon of "periodic intermittent fever".

4. If the induction cooker suddenly stops heating, it belongs to surge protection; Surge is a kind of harmful spike pulse when the voltage of power grid rises or falls instantly. Excessive surge is usually discharged by varistor, and only some smaller surge will trigger the surge protection circuit. The essence of protection is a short pause. If the power grid is old and poorly connected, there will be irregular power outages.

Precautions:

1, the power output is stable.

A high-quality induction cooker should have the function of automatic adjustment of output power, which can improve the adaptability of power supply and load. Some induction cookers don't have this function. When the power supply voltage rises, the output power rises sharply. When the power supply voltage drops, the power is obviously reduced, which will bring inconvenience to users and affect the cooking quality.

2. Reliability and effective life

The reliability index of induction cooker is generally expressed by MTBF (mean time between failures), and the unit is "hours". Quality products should be over 65,438+0,000 hours. The service life of induction cooker mainly depends on the service environment, maintenance and the service life of main components. It is speculated that the induction cooker will enter the failure period after three or four years of use.