Index: firmware/App/Modes/ModeTreatmentParams.c
===================================================================
diff -u -r1a36e9bd718b40ceaee21dd12eca2da353828e30 -r2ec63f115c0c07825fe21899058872d6ca70746b
--- firmware/App/Modes/ModeTreatmentParams.c	(.../ModeTreatmentParams.c)	(revision 1a36e9bd718b40ceaee21dd12eca2da353828e30)
+++ firmware/App/Modes/ModeTreatmentParams.c	(.../ModeTreatmentParams.c)	(revision 2ec63f115c0c07825fe21899058872d6ca70746b)
@@ -47,6 +47,7 @@
 #define INSTIT_MAX_INLET_WATER_COND_ALARM_USPCM 300.0F                  ///< Institutional record max inlet water conductivity alarm in uS/cm.
 #define INSTIT_MAX_MIN_VEN_PRES_WIDE_LIMIT_MMHG 400                     ///< Institutional record max min venous pressure wide limit in mmHg.
 #define INSTIT_MIN_MIN_VEN_PRES_WIDE_LIMIT_MMHG 0                       ///< Institutional record min min venous pressure wide limit in mmHg.
+#define RINSEBACK_MIN_VEN_PRESSURE_MMHG         -100                    ///< Minimum venous pressure (in mmHg) while in rinseback state.
 
 /// Record for range and default of treatment parameters.
 typedef struct
@@ -959,9 +960,19 @@
  * @details Outputs: none
  * @return the min venous pressure wide limit window in mmHg.
  *************************************************************************/
-S32  getMinVenousPressureWideValueMMHG( void )
+S32 getMinVenousPressureWideValueMMHG( void )
 {
-    return hdInstitutionalRecord.minVenPressWideLimitWindowMMHG;
+    S32               minVenPressureLimit = hdInstitutionalRecord.minVenPressWideLimitWindowMMHG;
+    HD_OP_MODE_T      opMode              = getCurrentOperationMode();
+    TREATMENT_STATE_T curTxState          = getTreatmentState();
+
+    // while in rinseback state of treatment mode, the minimum venous pressure limit is reduced
+    if ( ( MODE_TREA == opMode ) && ( TREATMENT_RINSEBACK_STATE == curTxState ) )
+    {
+        minVenPressureLimit = RINSEBACK_MIN_VEN_PRESSURE_MMHG;
+    }
+
+    return minVenPressureLimit;
 }
 
 /*********************************************************************//**