Index: firmware/App/Modes/Prime.c
===================================================================
diff -u -reaffb84a318bb78cbc28d8867f158ba35e19b552 -rc9a699f3e65bb1680c265d6d0ad755aa653b1707
--- firmware/App/Modes/Prime.c	(.../Prime.c)	(revision eaffb84a318bb78cbc28d8867f158ba35e19b552)
+++ firmware/App/Modes/Prime.c	(.../Prime.c)	(revision c9a699f3e65bb1680c265d6d0ad755aa653b1707)
@@ -60,7 +60,8 @@
 #define STEADY_VOLUME_COUNT_SEC                             ( 10000 / LOAD_CELL_STEADY_VOLUME_SAMPLING_TIME )  ///< Counter must be greater than 10 seconds before steady volume is true.
 #define STEADY_VOLUME_TIME_DEADLINE_MS                      ( 55 * MS_PER_SECOND )                             ///< Time in msec for the steady volume deadline time out.
 
-#define VENOUS_PRESSURE_BUBBLE_CLEAR_MAX_MMHG               ( 200.0F )                                         ///< Maximum arterial pressure reading (in mmHg) for bubble clear.
+#define VENOUS_PRESSURE_BUBBLE_CLEAR_MAX_MMHG               ( 200.0F )                                         ///< Maximum venous pressure reading (in mmHg) for bubble clear.
+#define BUBBLE_CLEAR_PRESSURE_REPETITIONS                   ( 5 )                                              ///< Bubble clear pressure repetitions in dialyzer priming.
 
 /// States of the treatment reservoir management state machine.
 typedef enum PrimeReservoirMgmt_States
@@ -749,7 +750,7 @@
     HD_PRE_TREATMENT_PRIME_STATE_T state = HD_PRIME_SALINE_DIALYZER_STATE;
 
     // Close valve 4-5 times to create pressure to clear Dialyzer bubbles
-    if ( TRUE == didTimeout( primeSalineDialyzerBubbleClearStartTime, ( primeSalineDialyzerTimeLimit / 5 ) ) )
+    if ( TRUE == didTimeout( primeSalineDialyzerBubbleClearStartTime, ( primeSalineDialyzerTimeLimit / BUBBLE_CLEAR_PRESSURE_REPETITIONS ) ) )
     {
         primeSalineDialyzerBubbleClearStartTime = getMSTimerCount();
         setValvePosition( VDI, VALVE_POSITION_C_CLOSE );
@@ -765,6 +766,9 @@
     if ( TRUE == didTimeout( primeSalineDialyzerStartTime, primeSalineDialyzerTimeLimit ) )
     {
         state = HD_PRIME_RESERVOIR_TWO_FILL_COMPLETE_STATE;
+        // Release pressure
+        setValvePosition( VDI, VALVE_POSITION_A_INSERT_EJECT );
+        bubbleClearActive = FALSE;
     }
     // TODO: Rework alarm and timeout logic here. PRIME_SALINE_DIALYZER_TIME_OUT_COUNT may not be reached.
     if ( TRUE == didTimeout( primeSalineDialyzerStartTime, PRIME_SALINE_DIALYZER_TIME_OUT_COUNT ) )