Index: firmware/App/Modes/ModeFlush.c
===================================================================
diff -u -rbb8d23755bc6f2d3016bde413fbdd32d31fa9838 -r603957e44fb094d75ad8ff59200df11bd96e6787
--- firmware/App/Modes/ModeFlush.c	(.../ModeFlush.c)	(revision bb8d23755bc6f2d3016bde413fbdd32d31fa9838)
+++ firmware/App/Modes/ModeFlush.c	(.../ModeFlush.c)	(revision 603957e44fb094d75ad8ff59200df11bd96e6787)
@@ -401,6 +401,7 @@
              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;
          }