Index: firmware/App/Controllers/ConcentratePumps.c
===================================================================
diff -u -ra683ad9f7451beffab6c2b6b8c1049c4c167a6dc -r0c3dbf78f9cef9cc5fc424f7d930882bffb8779a
--- firmware/App/Controllers/ConcentratePumps.c	(.../ConcentratePumps.c)	(revision a683ad9f7451beffab6c2b6b8c1049c4c167a6dc)
+++ firmware/App/Controllers/ConcentratePumps.c	(.../ConcentratePumps.c)	(revision 0c3dbf78f9cef9cc5fc424f7d930882bffb8779a)
@@ -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;
 }