turning on 3 way Jandy valve for solar heating


Silver Supporter
Sep 25, 2016
Sunnyvale, CA
Hi, the installer of my solar system shut the valve to "OFF" during the winter to make sure solar system is disabled and now I'm trying to turn it back on. I found there are two ON switches, "ON 1" and "ON 2". What are their differences and which one should I use?



TFP Guide
In The Industry
Apr 5, 2015
tucson, arizona
The two switches determine what direction the valve will turn, either clockwise or counterclockwise. Try one and see which way it turns and if it coincides when the solar is supposed to be on then leave it