There may be something wrong with the socket. The power plug of this electric pressure cooker is a three-hole type, and the front pole is a grounding protection connector. After the live wire in the socket is inserted into the plug, it is likely to squeeze the live wire to the terminal of the grounding protection bar. In this way, the live wire will return to the metal shell of your electric pressure cooker along this grounding wire, causing the shell to leak electricity.

After getting it to the maintenance department, their socket was good, so there was no water leakage. So it must be good to change the socket. Or directly cut the grounding wire inside the electric pressure cooker.