Has anyone experienced trouble with their 1290 TCC G1316C? I am receiving an error message that the valve is not switching. I am using a 2pos/10port 1200bar valve

G1316C.  If I try to switch from bypass to my column, it appears to have switched if I view the Column compartment in the Method Editor, but in the Instrument actuals window, it does not change.  Is there a solution other than replacing the $4K valve.