Index: firmware/App/Tasks/TaskGeneral.c
===================================================================
diff -u -ra631e128cd6be44aa232e23b58a229bfb8fe9043 -rc0e1f5f4c4657c156a87cc8be6c3db38bb14db33
--- firmware/App/Tasks/TaskGeneral.c	(.../TaskGeneral.c)	(revision a631e128cd6be44aa232e23b58a229bfb8fe9043)
+++ firmware/App/Tasks/TaskGeneral.c	(.../TaskGeneral.c)	(revision c0e1f5f4c4657c156a87cc8be6c3db38bb14db33)
@@ -30,6 +30,7 @@
 #include "PermeateTank.h"
 #include "RinsePump.h"
 #include "ROPump.h"
+#include "SubstitutionPump.h"
 #include "SystemCommDD.h"
 #include "TaskGeneral.h"
 #include "WatchdogMgmt.h"
@@ -81,7 +82,7 @@
     execConcentratePumpMonitor();
 
     // Monitor DD voltages
-    ///execVoltagesMonitor();
+    execVoltagesMonitor();
 
     // run DD operation mode state machine
     execDDOperationModes();
@@ -104,6 +105,9 @@
         execDryBicart();
     }
 
+    // Control Substitution pump
+    execSubstitutionPumpController();
+
     // Control closed loop mixing of bicarb and acid
     execMixingControl();