Index: firmware/App/Modes/ModeStandby.c
===================================================================
diff -u -r956bf7dbc9e63c875428495061dbdbcdbb8cacb0 -rf8a440a6af0a9e537ad9f75502188a42268cbd4c
--- firmware/App/Modes/ModeStandby.c	(.../ModeStandby.c)	(revision 956bf7dbc9e63c875428495061dbdbcdbb8cacb0)
+++ firmware/App/Modes/ModeStandby.c	(.../ModeStandby.c)	(revision f8a440a6af0a9e537ad9f75502188a42268cbd4c)
@@ -219,6 +219,7 @@
 
     if ( TRUE == didTimeout( filterFlushStartTime, FILTER_FLUSH_TIME_MS ) )
     {
+        setValveState( VPI, VALVE_STATE_CLOSED );
         state = DG_STANDBY_MODE_STATE_FLUSH_FILTER_IDLE;
     }