my system has only one (1) start time. It starts at 4:00 AM. Station 1 start at 4:00 AM, station 2 at 5:00 AM, station 3 at 6:00 AM and station 4 at 7:00 AM. After a pause, it starts again to go thru the cycle again. What can I do to stop it from going thru the cycle again. Shoud I replace the controller box?