Index: firmware/App/Modes/ModeFlush.c
===================================================================
diff -u -r07f24040a1f6773ceef7b6691eb9073cdccd4ffb -rd5ee0e84a64ee7942b9c2898035e2514a7c58b8a
--- firmware/App/Modes/ModeFlush.c	(.../ModeFlush.c)	(revision 07f24040a1f6773ceef7b6691eb9073cdccd4ffb)
+++ firmware/App/Modes/ModeFlush.c	(.../ModeFlush.c)	(revision d5ee0e84a64ee7942b9c2898035e2514a7c58b8a)
@@ -399,6 +399,7 @@
              setValveState( VPI, VALVE_STATE_OPEN );
              setValveState( VPD, VALVE_STATE_DRAIN_C_TO_NO );
              setValveState( VRD2, VALVE_STATE_CLOSED );
+             setValveState( VPO, VALVE_STATE_NOFILL_C_TO_NO );
 
              state = DG_FLUSH_STATE_FLUSH_DRAIN;
          }