Index: firmware/App/Modes/Prime.c
===================================================================
diff -u -r1d6c1c5544f09d5b38053cd4f91e8e64584dcdff -r4d19866d355b8e6c46627a3650b80ad9a18c1d07
--- firmware/App/Modes/Prime.c	(.../Prime.c)	(revision 1d6c1c5544f09d5b38053cd4f91e8e64584dcdff)
+++ firmware/App/Modes/Prime.c	(.../Prime.c)	(revision 4d19866d355b8e6c46627a3650b80ad9a18c1d07)
@@ -184,16 +184,14 @@
  * The transitionToPrime function prepares for transition to prime sub-mode.
  * This function will reset anything required before the start of priming sequence.
  * @details Inputs: none
- * @details Outputs: currentPrimeState, wetSelfTestsResult,
- * primeStartReqReceived, reservoirFilledStatus[], bubbleClearEnded,
- * primeDialyzerBubbleClearState
+ * @details Outputs: currentPrimeState, wetSelfTestsResult, primeStartReqReceived,
+ * reservoirFilledStatus[], bubbleClearEnded, primeDialyzerBubbleClearState
  * @return none
  *************************************************************************/
 void transitionToPrime( void )
 {
     primeStartTime = getMSTimerCount();
     primeFirstPurgePass = TRUE;
-    primeDialyzerBubbleClearState = PRIME_BUBBLE_CLEAR_READY_STATE;
 
     setAlarmUserActionEnabled( ALARM_USER_ACTION_RESUME, TRUE );
     setAlarmUserActionEnabled( ALARM_USER_ACTION_RINSEBACK, FALSE );
@@ -217,10 +215,13 @@
 
     resetPrimeFlags();
 
-    if ( TRUE == getTestConfigStatus( TEST_CONFIG_USE_WET_CARTRIDGE ) )
+    if ( getTestConfigStatus( TEST_CONFIG_USE_WET_CARTRIDGE ) != TRUE )
     {
-        // If the use wet cartridge test configuration has been enabled skip the dialyzer
-        // bubble clear
+        bubbleClearEnded              = FALSE;
+        primeDialyzerBubbleClearState = PRIME_BUBBLE_CLEAR_READY_STATE;
+    }
+    else
+    {   // if using a wet cartridge, we do not want to do the bubble clearing of dialyzer in blood side prime states
         bubbleClearEnded              = TRUE;
         primeDialyzerBubbleClearState = PRIME_BUBBLE_CLEAR_COMPLETE_STATE;
     }
@@ -599,7 +600,10 @@
     purgeAirValvesBloodPumpControl();
     purgeAirTimeOutStartTime = getMSTimerCount();
     primeSalineDialyzerBubbleClearStartTime = getMSTimerCount();
-    primeDialyzerBubbleClearState = PRIME_BUBBLE_CLEAR_READY_STATE;
+    if ( getTestConfigStatus( TEST_CONFIG_USE_WET_CARTRIDGE ) != TRUE )
+    {
+        primeDialyzerBubbleClearState = PRIME_BUBBLE_CLEAR_READY_STATE;
+    }
 
     if ( TRUE == doesAlarmStatusIndicateStop() )
     {
@@ -610,7 +614,6 @@
     return state;
 }
 
-
 /*********************************************************************//**
  * @brief
  * The handlePrimePurgeAirState function checks for air trap level and moves