To detect the temperature sensor and its lead, it must be connected when disconnected; Test the resistance at both ends of the sensor at room temperature of 25 degrees. If the forward resistance is 100k ohm and the reverse resistance is infinite, it can be used normally, otherwise it should be replaced.

Investigate and deal with the damage of heating parts of health pot. Test both ends of the heating parts in the pot. If the resistance is infinite, you need to replace the original type of heating parts; The abnormal repair of the power control circuit in the kettle is mainly to detect whether the microswitch of the function key can be turned on.