Index: firmware/App/Modes/Rinseback.c
===================================================================
diff -u -rfba69244d94307e50fefaa1e88bcbb979584461e -r4098c86c1059b113b39495f2b771327793ada59a
--- firmware/App/Modes/Rinseback.c	(.../Rinseback.c)	(revision fba69244d94307e50fefaa1e88bcbb979584461e)
+++ firmware/App/Modes/Rinseback.c	(.../Rinseback.c)	(revision 4098c86c1059b113b39495f2b771327793ada59a)
@@ -39,7 +39,6 @@
 // ********** private definitions **********
 
 #define DEFAULT_RINSEBACK_VOLUME_ML                 300.0F                  ///< Default rinseback volume (in mL).
-#define MAX_TOTAL_ADDITIONAL_RINSEBACK_VOLUME_ML    300.0F                  ///< Maximum total additional rinseback volume allowed : all additionals (in mL).
 #define TARGET_ADDITIONAL_RINSEBACK_VOLUME_ML        50.0F                  ///< Target rinseback volume for an additional volume request (in mL).
 #define RINSEBACK_FLOW_RATE_ADJ_ML_MIN               25                     ///< Adjustment amount (in mL/min) to apply when user requests increase/decrease in flow rate.
 #define DEFAULT_RINSEBACK_FLOW_RATE_ML_MIN          250                     ///< Default rinseback flow rate (in mL/min).
@@ -603,8 +602,7 @@
         result = RINSEBACK_STOP_STATE;
     }
     // Has additional rinseback completed or max additional volume reached
-    else if ( ( additionalRinsebackVolume_mL >= TARGET_ADDITIONAL_RINSEBACK_VOLUME_ML ) ||
-              ( totalAdditionalRinsebackVolume_mL >=  MAX_TOTAL_ADDITIONAL_RINSEBACK_VOLUME_ML ) )
+    else if ( additionalRinsebackVolume_mL >= TARGET_ADDITIONAL_RINSEBACK_VOLUME_ML )
     {
         result = RINSEBACK_STOP_STATE;
     }
@@ -950,15 +948,7 @@
 
     if ( RINSEBACK_STOP_STATE == rinsebackState )
     {
-        if ( totalAdditionalRinsebackVolume_mL <  MAX_TOTAL_ADDITIONAL_RINSEBACK_VOLUME_ML )
-        {
-            result = TRUE;
-            additionalRinsebackRequested = TRUE;
-        }
-        else
-        {
-            *rejReason = REQUEST_REJECT_REASON_ADDL_RINSEBACK_MAX_VOLUME_REACHED;
-        }
+        additionalRinsebackRequested = TRUE;
     }
     else
     {