Treatment method:
1, check whether the thermistor is damaged.
2. Check whether the filter capacitor and resonant capacitor are damaged or aged.
3. Check whether the high-power resistor is damaged or aging.
4. Check the IGBT for damage.
5. Check whether 5V, 18V is normal.
6. Check whether the four-voltage comparator LM339 is damaged.
It is recommended to send it to a professional maintenance point for inspection and maintenance.
Extended data
Before using the induction cooker, you should read the product manual carefully to understand the function, usage, maintenance requirements and the after-sales service that the manufacturer may provide. Generally speaking, the following points should be noted when using and maintaining:
1. Install special power cord and power socket. Because the induction cooker has high power, the power cord and socket must be configured according to the power. Usually, copper core wires that can withstand 15A current should be selected, and the matching sockets, plugs and switches should also meet this requirement. Otherwise, when the induction cooker works, the heavy current will make wires, sockets, etc. heat, scorch and short circuit.
2. The induction cooker should be placed smoothly. If one foot of the induction cooker is suspended, the gravity of the pot will force the furnace body to tilt and the food in the pot will overflow. If the surface of the stove is uneven, the micro-vibration generated by the pot is also easy to make the pot slip out, causing danger.
3. Ensure that the air inlet and air outlet are unobstructed. The working induction cooker heats up with the heating of the cooker, so the induction cooker should be placed in a place with air circulation, and the air outlet should be more than 250px away from the wall and other objects to ensure that there is no object blocking the air inlet and exhaust holes of the furnace body.
4. Choose the right pot. The shell and black crystal of induction cooker have limited bearing capacity. Generally, the food in the pot of civil induction cooker should not exceed 5 kg, and the bottom of the pot should not be too small to prevent the pressure on the pot surface from being too concentrated.
5. Clean the stove properly. The induction cooker can't clean the furnace surface or furnace body with solvent or gasoline. You can wipe it with a soft cloth dipped in a little neutral detergent.
6. When using, don't put ferromagnetic objects such as knives, forks and bottle caps on the furnace panel, and don't put items easily affected by magnetic fields such as watches and recording tapes on the furnace surface or carry them with you to operate the induction cooker.
7. Don't let the cooker burn empty or dry, so as to avoid cracking of the induction cooker panel due to overheating.
8. Don't fill the pot for more than seven minutes, so as to avoid short circuit failure caused by the overflow of soup after heating.
Baidu encyclopedia: induction cooker