Ikea (Ikea Electrolux) HJALPSAM, strong whistle when working with hot water ⇐ Electrolux

[spirulinahaus]

Hello,
The Ikea HJALPSAM dishwasher, during operation, after some time it starts to emit a high-frequency whistle, when you open the door, the whistle stops, after closing it resumes. I checked, ran the wash for 60 minutes and several rinses in a row, there was no whistling. It seems that the whistling occurs when the water inside is hot (in eco, 65 and 75 modes).
Previously, the whistling occurred sporadically, now it is constant. The dishwasher performs its functions.

Please help me figure it out.
Thank you
Attached video.
https://www.youtube.com/shorts/rpZEwy4NkzU