Index: firmware/App/Controllers/PresOccl.c
===================================================================
diff -u -rc0f07620385a219fd852793ac4c97b173f476aa2 -rfeb076fdcfe6485f0e777df6c0f19c58cc0aefe4
--- firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision c0f07620385a219fd852793ac4c97b173f476aa2)
+++ firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision feb076fdcfe6485f0e777df6c0f19c58cc0aefe4)
@@ -865,7 +865,6 @@
         F32 venPres = getMeasuredVenousPressure();
         HD_OP_MODE_T hdMode = getCurrentOperationMode();
         U32 hdSubMode = getCurrentSubMode();
-        BOOL txMode = ( MODE_TREA == hdMode ? TRUE : FALSE );
         BOOL ptxMode = ( MODE_PRET == hdMode && hdSubMode > HD_PRE_TREATMENT_CART_INSTALL_STATE ? TRUE : FALSE );
 
         // Range check occlusion sensor (OB)
@@ -916,9 +915,8 @@
 #endif
         {   // only trigger alarm if BP is running
             if ( isBloodPumpRunning() != FALSE )
-            {   // must be in treatment or pre-treatment mode to trigger this alarm
-                if ( ( TRUE == txMode || TRUE == ptxMode ) &&
-                     ( venPres > VENOUS_PRESSURE_LIMIT_MAX_MMHG + VENOUS_PRESSURE_OCCL_OFFSET_MMHG ) )
+            {   // must be in pre-treatment mode to trigger this alarm
+                if ( ( TRUE == ptxMode ) && ( venPres > VENOUS_PRESSURE_LIMIT_MAX_MMHG + VENOUS_PRESSURE_OCCL_OFFSET_MMHG ) )
                 {
                     if ( TRUE == isPersistentAlarmTriggered( ALARM_ID_HD_VENOUS_LINE_OCCLUSION, TRUE ) )
                     {