Hi Everyone,
Not sure if I post this thread in the right section. Perhaps it should be in the plumbing category.
I have this old electric shower Kohler Mira Vie 8.5
https://resources.kohler.com/plumbing/mira/pdf/1088848-w2-f-mira-vie-2007-2014-installation-and-user-guide.pdf
It was working...