I have an early sts12 with an integra and direct command system. I used to be able to flush the booms using the manual spray mode (instead of a rate). Now when I turn on the booms with my master switch (on the hydro lever), the booms do not turn on and "boom off " lights turn on. I tried setting a manual speed and no improvement. Any thoughts? Thanks
Hagie sts12 booms don't turn on
