I am a bit confused on what you mean solenoid valve. Are you talking about the spindle locking mechanism? M25 should be your coolant on code. Although not all machines are the same, the sr32 I ran along with all other stars I've ran M25 is coolant on.
if your talking about the sub side air blast your code should be m14 on m15 off. A bit more information and I should be able to help.