Index: firmware/App/Modes/ModePreTreat.c
===================================================================
diff -u -rdd092a45d77867fe3470ac100739993fff5337f3 -r36eda8f2799310ff842cf035a3eaa96c7c2bccdb
--- firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision dd092a45d77867fe3470ac100739993fff5337f3)
+++ firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision 36eda8f2799310ff842cf035a3eaa96c7c2bccdb)
@@ -702,7 +702,7 @@
     patientConnectionConfirm = FALSE;
     treatmentStartRequested = FALSE;
 
-    doorClosedRequired( TRUE, TRUE );
+    doorClosedRequired( FALSE, TRUE );
 
     for ( valve = VDI; valve < NUM_OF_VALVES; ++valve )
     {
@@ -1041,11 +1041,13 @@
 {
     HD_PRE_TREATMENT_PAT_CONN_STATE_T nextState = PRE_TREATMENT_PAT_CONN_WAIT_FOR_UF_VOL_STATE;
 
+    // Look for cartridge door to open and then close (indicating user inverted dialyzer)
+    handlePatientConnectionDoorOpened();
+
     // If UF volume set by user, move on to next state
     if ( TRUE == setUFVolStatus )
     {
         setUFVolStatus = FALSE;
-        doorClosedRequired( FALSE, TRUE );
         nextState = PRE_TREATMENT_PAT_CONN_WAIT_FOR_DLZR_INVERT_STATE;
     }
 
@@ -1070,6 +1072,8 @@
 
     if ( ( TRUE == doorOpened ) && ( STATE_CLOSED == getSwitchStatus( FRONT_DOOR ) ) )
     {
+        doorClosedRequired( TRUE, TRUE );
+        doorOpened = FALSE;
         nextState = PRE_TREATMENT_PAT_CONN_WAIT_FOR_USER_CONFIRM_STATE;
     }
 
@@ -1089,16 +1093,10 @@
 {
     HD_PRE_TREATMENT_PAT_CONN_STATE_T nextState = PRE_TREATMENT_PAT_CONN_WAIT_FOR_USER_CONFIRM_STATE;
 
-    // Look for cartridge door to open and then close (indicating user inverted dialyzer)
-    handlePatientConnectionDoorOpened();
-
     if ( TRUE == patientConnectionConfirm )
     {
-        doorClosedRequired( TRUE, TRUE );
-        if ( STATE_CLOSED == getSwitchStatus( FRONT_DOOR ) )
-        {
-            nextState = PRE_TREATMENT_PAT_CONN_WAIT_FOR_TREATMENT_START_STATE;
-        }
+        patientConnectionConfirm = FALSE;
+        nextState = PRE_TREATMENT_PAT_CONN_WAIT_FOR_TREATMENT_START_STATE;
     }
 
     return nextState;