Index: firmware/App/Controllers/DryBiCart.c
===================================================================
diff -u -r581f75133863205963703e6e6970ac66ee5228c1 -ree311636fcfb7db1913edef2d9fea22153465a87
--- firmware/App/Controllers/DryBiCart.c	(.../DryBiCart.c)	(revision 581f75133863205963703e6e6970ac66ee5228c1)
+++ firmware/App/Controllers/DryBiCart.c	(.../DryBiCart.c)	(revision ee311636fcfb7db1913edef2d9fea22153465a87)
@@ -24,6 +24,7 @@
 #include "DryBiCart.h"
 #include "Level.h"
 #include "Messaging.h"
+#include "MessageSupport.h"
 #include "ModeGenDialysate.h"
 #include "OperationModes.h"
 #include "PIControllers.h"
@@ -219,6 +220,8 @@
 static PI_CONTROLLER_SIGNALS_DATA bicarbControlSignals;                                         ///< Bicarb closed loop control signal data
 static PI_CONTROLLER_SIGNALS_DATA acidControlSignals;                                           ///< Acid closed loop control signal data
 
+static DRY_BICART_OPERATION_T prevState;                                                       ///< Last dry bicart operation prior to current state.
+
 // ********** private function prototypes **********
 
 static void updateDrybicartOperation(void);
@@ -399,6 +402,7 @@
     dryBiCartDrainCondStableCount                       = 0;
     dryBiCartDrainTimePeriod                            = 0;
     dryBiCartPersistanceStartTime                       = 0;
+    prevState                                           = DRY_BICART_IDLE;
 
     initializePIController( PI_CONTROLLER_ID_BICARB_VOL, 0.0F,\
                            getBicarbKpGainCoefficient(), getBicarbKiGainCoefficient(),\
@@ -515,6 +519,12 @@
             break;
     }
 
+    if ( prevState != dryBicartStartRequest )
+    {
+        SEND_EVENT_WITH_2_U32_DATA( DD_EVENT_DRY_BICART_STATE_CHANGE, prevState, dryBicartStartRequest );
+        prevState = dryBicartStartRequest;
+    }
+
     // Publish dry bicart data
     publishDryBicartData();
 }