Insane consumption of salt in the dishwasher. Cause? ⇐ Electrolux

[Evgeniy Msk]

Good day!

I have an IKEA SKINANDE PMM (aka Electrolux, as far as I understand), 2 years old. We always use it once a day. Normally, salt consumption was always approximately a full tank for 7 months.
At some point I began to eat a full tank of salt (about 1.1 kg) for 3 weeks. Salt I poured a variety of different ones, the result was the same. Along the way, rusty droplets began to appear on the dishes.

I assumed that the problem was in the water supply valve to the ion exchanger, and that it was open all the time, even though it was normally closed (closed when turned off). ). I took it off, rang it with a multimeter - 3.6, everything is fine, it turns out that the coil is alive. The core inside the coil is not stuck, it moves perfectly with your hands. The rubber washer at the end of the core, which blocks the hole with water, looks pristinely new.

I put everything back together, without the side panel, turned it on, I look at the ion exchanger, it is made of transparent plastic. Well, at certain moments water is clearly supplied there under pressure. But this, not that not all the time, these are just individual short-term submissions, mostly at the beginning of the program, and towards the end.

Are there any ideas?

Thanks in advance,
Evgeniy