There is a phenomenon of continuous exhaust, which may be that the lid is not properly covered. When plugged in, it won't appear at first, but after cooking for a period of time, when the inside reaches a certain temperature, it will always exhaust.

It is also possible that there is something wrong with the sealing ring. After all, after a long time of use, the sealing ring is easy to age. Therefore, its sealing performance will deteriorate and air leakage will occur.