Index: firmware/App/Controllers/PresOccl.c
===================================================================
diff -u -rf7b149d8b8c9ea6ac58e4739101693d251d7a355 -rfa41b85cf47fb01cd905b2ed53d472a9cb0c1706
--- firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision f7b149d8b8c9ea6ac58e4739101693d251d7a355)
+++ firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision fa41b85cf47fb01cd905b2ed53d472a9cb0c1706)
@@ -569,13 +569,11 @@
  * @brief
  * The execPresOcclTest function executes the PresOccl self-test.
  * @details Inputs: none
- * @details Outputs: none
- * @return the result of the PresOccl self-test.
+ * @details Outputs: Triggers fault when test case fails
+ * @return none
  *************************************************************************/
-SELF_TEST_STATUS_T execPresOcclTest( void )
+void execPresOcclTest( void )
 {
-    SELF_TEST_STATUS_T result = SELF_TEST_STATUS_PASSED;
-
     U32 const bpPressure = getMeasuredBloodPumpOcclusion();
     U32 const dialysateInPressure = getMeasuredDialInPumpOcclusion();
     U32 const dialysateOutPressure = getMeasuredDialOutPumpOcclusion();
@@ -584,30 +582,28 @@
 
     if ( ( bpPressure <= OCCLUSION_NO_CARTRIDGE_PRESSURE_READING_MIN ) || ( bpPressure >= OCCLUSION_THRESHOLD ) )
     {
-        result = SELF_TEST_STATUS_FAILED;
+        SET_ALARM_WITH_1_U32_DATA( ALARM_ID_HD_BP_OCCLUSION_SELF_TEST_FAILURE, bpPressure );
     }
 
     if ( ( dialysateInPressure <= OCCLUSION_NO_CARTRIDGE_PRESSURE_READING_MIN ) || ( dialysateInPressure >= OCCLUSION_THRESHOLD ) )
     {
-        result = SELF_TEST_STATUS_FAILED;
+        SET_ALARM_WITH_1_U32_DATA( ALARM_ID_HD_DIP_OCCLUSION_SELF_TEST_FAILURE, dialysateInPressure );
     }
 
     if ( ( dialysateOutPressure <= OCCLUSION_NO_CARTRIDGE_PRESSURE_READING_MIN ) || ( dialysateOutPressure >= OCCLUSION_THRESHOLD ) )
     {
-        result = SELF_TEST_STATUS_FAILED;
+        SET_ALARM_WITH_1_U32_DATA( ALARM_ID_HD_DOP_OCCLUSION_SELF_TEST_FAILURE, dialysateOutPressure );
     }
 
     if ( ( arterialPressure <= ARTERIAL_PRESSURE_SELF_TEST_MIN ) || ( arterialPressure >= ARTERIAL_PRESSURE_SELF_TEST_MAX ) )
     {
-        result = SELF_TEST_STATUS_FAILED;
+        SET_ALARM_WITH_1_U32_DATA( ALARM_ID_HD_ARTERIAL_PRESSURE_SELF_TEST_FAILURE, arterialPressure );
     }
 
     if ( ( venousPressure <= VENOUS_PRESSURE_SELF_TEST_MIN ) || ( venousPressure >= VENOUS_PRESSURE_SELF_TEST_MAX ) )
     {
-        result = SELF_TEST_STATUS_FAILED;
+        SET_ALARM_WITH_1_U32_DATA( ALARM_ID_HD_VENOUS_PRESSURE_SELF_TEST_FAILURE, venousPressure );
     }
-
-    return result;
 }
 
 /*********************************************************************//**