Index: firmware/App/Controllers/BloodFlow.c
===================================================================
diff -u -re23087e0c17f6ea81d60641fdb52121a8dd5a099 -r27f3db92495948d4c1192421c1b0c20338c4a034
--- firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision e23087e0c17f6ea81d60641fdb52121a8dd5a099)
+++ firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision 27f3db92495948d4c1192421c1b0c20338c4a034)
@@ -108,7 +108,9 @@
 
 /// Blood flow sensor signal strength low alarm persistence.
 #define FLOW_SIG_STRGTH_ALARM_PERSIST       ( 5 * MS_PER_SECOND )
-#define MIN_FLOW_SIG_STRENGTH               0.9             ///< Minimum flow sensor signal strength (90%).
+#define MIN_FLOW_SIG_STRENGTH               0.9             ///< Minimum flow sensor signal strength (90%).
+
+#define BFM_SENSOR_PARAM_CORRUPT_STATUS     0x7             ///< Blood flow meter NVM parameter status.
 
 /// Enumeration of blood pump controller states.
 typedef enum BloodPump_States
@@ -188,9 +190,6 @@
 
 static U32 bpCurrErrorDurationCtr = 0;                                          ///< Used for tracking persistence of bp current errors
 
-static BLOOD_FLOW_SELF_TEST_STATE_T bloodPumpSelfTestState = BLOOD_FLOW_SELF_TEST_STATE_START;  ///< Current blood pump self-test state
-static U32 bloodPumpSelfTestTimerCount = 0;                                     ///< Timer counter for blood pump self-test
-
 // ********** private function prototypes **********
 
 static BLOOD_PUMP_STATE_T handleBloodPumpOffState( void );
@@ -430,8 +429,13 @@
 {
     HD_OP_MODE_T opMode = getCurrentOperationMode();
     U16 bpRPM = getIntADCReading( INT_ADC_BLOOD_PUMP_SPEED );
-    U16 bpmA = getIntADCReading( INT_ADC_BLOOD_PUMP_MOTOR_CURRENT );
-    F32 bpFlow = ( ( getFPGABloodFlow() ) * bloodFlowCalGain ) + bloodFlowCalOffset;
+    U16 bpmA = getIntADCReading( INT_ADC_BLOOD_PUMP_MOTOR_CURRENT );
+
+#ifndef V1_5_SYSTEM
+    F32 bpFlow = ( getFPGABloodFlow() * bloodFlowCalGain ) + bloodFlowCalOffset;
+#else
+    F32 bpFlow = ( ( getFPGABloodFlow() * -1.0 ) * bloodFlowCalGain ) + bloodFlowCalOffset;  // Blood flow sensor installed backwards on HD
+#endif
 
     adcBloodPumpMCSpeedRPM.data = (F32)(SIGN_FROM_12_BIT_VALUE(bpRPM)) * BP_SPEED_ADC_TO_RPM_FACTOR;
     adcBloodPumpMCCurrentmA.data = (F32)(SIGN_FROM_12_BIT_VALUE(bpmA)) * BP_CURRENT_ADC_TO_MA_FACTOR;
@@ -1267,28 +1271,12 @@
     SELF_TEST_STATUS_T result = SELF_TEST_STATUS_FAILED;
     CALIBRATION_DATA_T cal;
 
-    switch ( bloodPumpSelfTestState )
+    // Retrieve blood flow sensor calibration data and check for sensor connected status
+    if ( ( TRUE == getCalibrationData( &cal ) ) && ( BFM_SENSOR_PARAM_CORRUPT_STATUS != getFPGABloodFlowMeterStatus() ) )
     {
-        case BLOOD_FLOW_SELF_TEST_STATE_START:
-            // Retrieve blood flow sensor calibration data
-            if ( TRUE == getCalibrationData( &cal ) )
-            {
-                bloodFlowCalGain = cal.bloodFlowGain;
-                bloodFlowCalOffset = cal.bloodFlowOffset_mL_min;
-                bloodPumpSelfTestState = BLOOD_FLOW_TEST_STATE_COMPLETE;  // TODO - implement rest of self-test(s)
-                result = SELF_TEST_STATUS_PASSED;
-            }
-            break;
-
-        case BLOOD_FLOW_TEST_STATE_IN_PROGRESS:
-            break;
-
-        case BLOOD_FLOW_TEST_STATE_COMPLETE:
-            break;
-
-        default:
-            // TODO - s/w fault
-            break;
+        bloodFlowCalGain = cal.bloodFlowGain;
+        bloodFlowCalOffset = cal.bloodFlowOffset_mL_min;
+        result = SELF_TEST_STATUS_PASSED;
     }
 
     return result;