Hello, I wanted to install a solar sync on my PRO-C (300i from 2013). Since it does not have the setting for it on the dial, I ordered a new PRO-C Controller (400i from 2021). I used the same wiring and programmed it. Even it showed everything fine on the display - it never acitvated the sprinkler system. Then I removed the solar sync, tried it again and got the same result. I recognized the Base Modules coming with the Controllers are not compatible. (Mechanical blocking the fitting). My questi...
