Index: firmware/App/Controllers/ConcentratePumps.c
===================================================================
diff -u -r6cb5b0565e199e7ebbdfb278c58c9775af181043 -r75f5cf4a8484f0c08b90edfb4b49a6268e51de65
--- firmware/App/Controllers/ConcentratePumps.c	(.../ConcentratePumps.c)	(revision 6cb5b0565e199e7ebbdfb278c58c9775af181043)
+++ firmware/App/Controllers/ConcentratePumps.c	(.../ConcentratePumps.c)	(revision 75f5cf4a8484f0c08b90edfb4b49a6268e51de65)
@@ -716,6 +716,12 @@
         state = CONCENTRATE_PUMP_CONTROL_TARGET_SPEED_STATE;
     }
 
+    if ( FALSE == concentratePumps[ pumpId ].hasTurnOnPumpsBeenRequested )
+    {
+        state = CONCENTRATE_PUMP_OFF_STATE;
+        stopConcentratePump( pumpId );
+    }
+
     return state;
 }