1. Disassemble the handle first, and there is a temperature control switch inside. The bimetal of the steam temperature sensing element is deformed by the steam generated when the water boils, and the power switch is pushed by the deformed lever principle, so that the electric kettle is automatically powered off after the water boils.

2. Secondly, if the contact between the temperature control switch and the boiler wall is loose or falls off, it will also cause failure. First check whether it is loose, and then heat it on the contact surface of the temperature control switch with a heated soldering iron for about 30 seconds. There is no click, which proves that the switch has been damaged and must be replaced.