Having some sound is basically completely normal!

Here is a summary of several common reasons why it might make noise:

1. The Induction Coil (Magnetic Flux Generator):

When the IH hob is running on electromagnetic induction heating, the magnetic flux generator in the heating element creates an alternating magnetic field via high-frequency alternating current. This causes magnetic field vibrations between the induction coil and the metal cookware, resulting in a certain high-frequency humming sound.

 

2. Cookware:

General metal pans are usually not composed of just a single material (multi-ply/composite). The outermost layer, the middle core, and the inner layer might all use different materials.

Therefore, different magnetic field reactions within the internal layers of the metal cookware can generate a buzzing electrical sound.

 

3. Cookware and Hob Surface:

It is also possible that moisture or water bubbles trapped between the bottom of the pan and the hob surface are boiling due to heat, creating sound.

 

If the cookware itself already shows peeling paint, warping, or deformities, it will not only affect efficiency and cause noise, but also reduce the lifespan of the glass panel. Please pay close attention to changes at the bottom of your pans and replace them with new cookware when appropriate. Trying to use single-material cookware as much as possible can help avoid annoying noises!