Why does my egg cooker make a clicking or rattling sound during use?

A light sound during heating can happen as water boils and parts expand, but loud clicking or rattling should not be ignored. These appliances use a heating base, lid and detachable tray, so loose parts or limescale can create extra noise. fileciteturn0file11turn0file10

1. Switch the appliance off and unplug it, then let it cool. Do not listen by leaning close to the steam exhaust.
2. Check that the lid, egg tray and measuring cup are not trapped or sitting crooked. Refit them carefully once cool.
3. Inspect the base and water container for scale or residue. Deposits can make heating uneven and noisier than normal.
4. Run one cycle with the correct water amount. If the noise becomes louder, metallic or is joined by vibration, stop the test.

Expected result: The cooker should make only a modest heating sound and should not rattle continuously.

Stop using the appliance immediately if: the noise is accompanied by sparking, a burning smell, smoke, a loose cord or a hot plug. If the issue remains unresolved or safe use is uncertain, stop using the product and contact the retailer or store where it was purchased.