Aaron wrote:
I bought this house 3 years ago with the sprinkler system already
installed, so I don't know much about it. It has worked for the last
few years. Now when I run station #2 another station (#3) always
comes on with it. When I run station #3 it runs by itself and station
#2 remains off. All other stations run as expected. I do not know
where to begin troubleshooting. Please help with your ideas.

Thanks,
Aaron
Hi,
If it is auto programmable control unit it may be faulty.
Did you try basic factory default setting?