Index: firmware/App/Controllers/AirPump.c
===================================================================
diff -u -r39da2678df053e12c0fef86c0d3da9d9c5adcbb5 -rdf17e43dd693c0c3fc7214e7f32ee6c84ac16d48
--- firmware/App/Controllers/AirPump.c	(.../AirPump.c)	(revision 39da2678df053e12c0fef86c0d3da9d9c5adcbb5)
+++ firmware/App/Controllers/AirPump.c	(.../AirPump.c)	(revision df17e43dd693c0c3fc7214e7f32ee6c84ac16d48)
@@ -48,7 +48,7 @@
 // ********** private data **********
 
 static AIR_PUMP_STATE_T currentAirPumpState;                                                    ///< Current air pump control state.
-static U08 airPumpStallCounter;                                                                 ///<
+static U08 airPumpStallCounter;                                                                 ///< Air pump stall counter
 static U16 currentAirPumpRPM;                                                                   ///< Current air pump RPM
 static F32 currentAirPumpPowerLevel;                                                            ///< Current air pump power level setting in % duty cycle (0..100%).
 static U32 airPumpDataPublicationTimerCounter;                                                  ///< Air pump data broadcast timer counter.
Index: firmware/App/Services/DDInterface.c
===================================================================
diff -u -r9c833ef5623ce842267e284d958820ac0dc3a7fc -rdf17e43dd693c0c3fc7214e7f32ee6c84ac16d48
--- firmware/App/Services/DDInterface.c	(.../DDInterface.c)	(revision 9c833ef5623ce842267e284d958820ac0dc3a7fc)
+++ firmware/App/Services/DDInterface.c	(.../DDInterface.c)	(revision df17e43dd693c0c3fc7214e7f32ee6c84ac16d48)
@@ -120,7 +120,7 @@
     dialysateDeliveryCmdSet.bicarbConvFactor  = 0.0F;
     dialysateDeliveryCmdSet.sodium            = 0;
     dialysateDeliveryCmdSet.bicarbonate       = 0;
-    dialysateDeliveryCmdSet.substitutionRate  = 0.0F;
+    //dialysateDeliveryCmdSet.substitutionRate  = 0.0F;
 }
 
 /**********************************************************************//**
@@ -401,7 +401,7 @@
     dialysateDeliveryCmdSet.bicarbConvFactor = bicarbConvFactor;
     dialysateDeliveryCmdSet.sodium           = sodium;
     dialysateDeliveryCmdSet.bicarbonate      = bicarbonate;
-    dialysateDeliveryCmdSet.substitutionRate = 0.0F;
+    //dialysateDeliveryCmdSet.substitutionRate = 0.0F;
 
 #ifndef TEST_UI_ONLY
     sendMessage( MSG_ID_DD_GEN_DIALYSATE_REQUEST_DATA, COMM_BUFFER_OUT_CAN_TD_2_DD, (U08*)(&dialysateDeliveryCmdSet), sizeof( DIALYSATE_DELIVERY_REQ_PAYLOAD_T ) );
@@ -614,7 +614,7 @@
 {
     if ( TRUE == dialysateDeliveryCmdSet.start )
     {
-        dialysateDeliveryCmdSet.substitutionRate = qs;
+        //dialysateDeliveryCmdSet.substitutionRate = qs;
 #ifndef TEST_UI_ONLY
         sendMessage( MSG_ID_DD_GEN_DIALYSATE_REQUEST_DATA, COMM_BUFFER_OUT_CAN_TD_2_DD, (U08*)(&dialysateDeliveryCmdSet), sizeof( DIALYSATE_DELIVERY_REQ_PAYLOAD_T ) );
 #endif