Why does milk cooker make a sound while boiling the milk?

There are several reasons why your milk cooker might make a sound while boiling milk:

1. Boiling and Steam:

* Normal Boiling: As the milk heats up, it boils and creates steam. The steam can escape through vents, causing a hissing sound.

* Boiling Over: If the milk boils too vigorously, it can create a bubbling and gurgling sound as it boils over.

2. Heating Element:

* Heating Element Activation: Some milk cookers have a heating element that creates a humming or buzzing sound when activated. This is normal and usually stops once the milk reaches the desired temperature.

* Heating Element Issues: If the heating element is malfunctioning or has built up residue, it can make a rattling or clicking sound.

3. Mechanical Parts:

* Stirring Mechanism: Some milk cookers have a stirring mechanism that can make a clicking or whirring sound as it rotates.

* Pump: If your milk cooker has a pump for automatic dispensing or cleaning, it might make a humming or gurgling sound.

4. Other Factors:

* Empty Container: Boiling milk in an empty container can create a resonating sound as the steam travels through the chamber.

* Container Material: The type of material used for the milk cooker's container can affect the sound it produces. Glass or metal containers might make different sounds than plastic ones.

Troubleshooting Tips:

* Check the User Manual: Consult your milk cooker's manual to understand its normal operating sounds.

* Adjust the Milk Level: Ensure the milk level is appropriate for the cooker's capacity.

* Clean the Cooker: Regularly clean the cooker to remove any residue that might be causing noise.

* Check for Malfunctions: If the noise seems unusual or excessive, consider contacting the manufacturer for support.

Note: If the sound is accompanied by other issues like smoke, strange smells, or a malfunctioning heating element, stop using the cooker immediately and contact the manufacturer or a qualified electrician.