Index: firmware/App/Modes/FPModes/FlushConcentrate.c
===================================================================
diff -u -re8a090df33223455312adc5ad494a3b5e2507f00 -r25e44b3d8133ef2d8bed9a2e2dd55696c41e8acf
--- firmware/App/Modes/FPModes/FlushConcentrate.c	(.../FlushConcentrate.c)	(revision e8a090df33223455312adc5ad494a3b5e2507f00)
+++ firmware/App/Modes/FPModes/FlushConcentrate.c	(.../FlushConcentrate.c)	(revision 25e44b3d8133ef2d8bed9a2e2dd55696c41e8acf)
@@ -203,13 +203,13 @@
     {
         case CONC_FLUSH_IN_PROGRESS:
             setValveState( M4_VALV, VALVE_STATE_OPEN );
+            setValveState( M12_VALV, VALVE_STATE_OPEN );
             setValveState( P6_VALV, VALVE_STATE_CLOSED );
             setValveState( P11_VALV, VALVE_STATE_OPEN );
             setValveState( P33_VALV, VALVE_STATE_CLOSED );
             setValveState( P34_VALV, VALVE_STATE_CLOSED );
-            setValveState( P37_VALV, VALVE_STATE_CLOSED );
+            setValveState( P37_VALV, VALVE_STATE_OPEN );
             setValveState( P39_VALV, VALVE_STATE_OPEN );
-            setValveState( P43_VALV, VALVE_STATE_CLOSED );
             startPermeateTankControl();
             if ( TRUE == isBoostPumpInstalled() )
             {
@@ -225,13 +225,13 @@
             if ( FALSE == isConcentrateFlushComplete() )
             {
                 setValveState( M4_VALV, VALVE_STATE_CLOSED );
+                setValveState( M12_VALV, VALVE_STATE_CLOSED );
                 setValveState( P6_VALV, VALVE_STATE_CLOSED );
                 setValveState( P11_VALV, VALVE_STATE_CLOSED );
                 setValveState( P33_VALV, VALVE_STATE_CLOSED );
                 setValveState( P34_VALV, VALVE_STATE_CLOSED );
                 setValveState( P37_VALV, VALVE_STATE_CLOSED );
                 setValveState( P39_VALV, VALVE_STATE_CLOSED );
-                setValveState( P43_VALV, VALVE_STATE_CLOSED );
 
                 if ( TRUE == isBoostPumpInstalled() )
                 {