MultiPlus-|| GX, 6k5, unusual message on the screen

Hello community, I have a problem: there is a message on the screen that I don’t understand, but other indicators on the screen are normal. What could it be?

And also, periodically, once or twice a week, error #3 appears and the inverter turns off, and I can’t turn it on, and as soon as I connect MK3 to it and launch VE, Configure, it turns on by itself.

It possibly has a similar display to the other built in GX models.

I don’t think I have this problem, all the other information is shown correctly.