Index: firmware/App/Modes/ModePreTreat.c
===================================================================
diff -u -ra73cb04b05c061e2c9c7264869296b520ccbfc8a -r85c561f68280f7390dc9e8b7013cbcb85d50f424
--- firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision a73cb04b05c061e2c9c7264869296b520ccbfc8a)
+++ firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision 85c561f68280f7390dc9e8b7013cbcb85d50f424)
@@ -1074,11 +1074,9 @@
 {
     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 )
     {
+        patientConnectionConfirm = FALSE;
         nextState = PRE_TREATMENT_PAT_CONN_WAIT_FOR_TREATMENT_START_STATE;
     }