1. Check the power cord and plug. Sometimes bad plug or damaged power cord will affect the normal work of rice cooker. Check the power cord and plug, and replace it if problems are found.
2. Check the fuse. Fuse is an important part to protect the rice cooker. If the fuse is blown, the rice cooker will not work normally. Please check the fuse and replace it if necessary.
3. Check the bushing and sealing ring. If the inner container and sealing ring are not firm or damaged, water vapor will escape from them, which will cause the rice cooker to fail to work normally. Check the bushing and sealing ring and replace them if necessary.
4. Check the thermal protection device. If the rice cooker is used for too long or the temperature is too high, the thermal protection device will start to protect the rice cooker from damage. If the thermal protection device has been started, you need to wait for some time until it automatically resets.
5. If the above methods don't work, there may be something wrong with the motherboard or circuit board of the rice cooker, so you need to contact professional maintenance personnel or buy a new rice cooker directly.
In short, if you have no confidence in the maintenance of rice cookers, you'd better give it to professional maintenance personnel. This can ensure your safety and the normal operation of the rice cooker.