The product operates on the IH electromagnetic heating principle, where the coil generates a magnetic field to heat iron cookware when detecting a pot. During operation, the coil's magnetic field causes vibrations in the gaps of the cookware, producing a slight electromagnetic sound, which is considered a normal phenomenon.
In the powered standby state, certain components in the power section of the appliance are in an active-standby state. When the current passes through these components, there will be a slight electric current sound, which is considered a normal phenomenon.
Note:
Some cookware is composed of two different materials pressed together, creating small gaps in between.