Index: firmware/App/Modes/ModePreTreat.c
===================================================================
diff -u -ra12f3ce494cd2a18aee31659c17d8a619fc70f7d -r87d4b0145a1f6a2ccf38e006e30dbf5dd854ed7e
--- firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision a12f3ce494cd2a18aee31659c17d8a619fc70f7d)
+++ firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision 87d4b0145a1f6a2ccf38e006e30dbf5dd854ed7e)
@@ -22,6 +22,7 @@
 #include "Timers.h"
 #include "TubeSetInstall.h"
 #include "TxParams.h"
+#include "StatePreTxRecirculate.h"
 
 /**
  *  @addtogroup TDPreTreatmentMode
@@ -124,7 +125,7 @@
             break;
 
         case TD_PRE_TREATMENT_RECIRCULATE_STATE:
-            // currentPreTreatmentState = handleRecirculateState();
+            currentPreTreatmentState = handleRecirculateState();
             break;
 
         case TD_PRE_TREATMENT_CONFIRM_RX_STATE:
@@ -269,16 +270,15 @@
  * @brief
  * The handleRecirculateState function executes the Recirculate state of
  * pre-treatment mode.
- * @details \b Inputs: TODO fill up if any
- * @details \b Outputs: TODO fill up if any
+ * @details \b Inputs: none.
+ * @details \b Outputs: none.
  * @return next Pre-Treatment mode state.
  *************************************************************************/
 static TD_PRE_TREATMENT_MODE_STATE_T handleRecirculateState( void )
 {
     TD_PRE_TREATMENT_MODE_STATE_T state = TD_PRE_TREATMENT_RECIRCULATE_STATE;
 
-    // TODO: Transition to Confirm RX state on completion when implemented
-    // state = TD_PRE_TREATMENT_CONFIRM_RX_STATE;
+    execPreTxRecirculate();
 
     return state;
 }
@@ -379,6 +379,13 @@
             // TODO add logic once we have pre-treatment mode developed
             break;
 
+        case ALARM_ACTION_RESUME:
+             if ( TD_PRE_TREATMENT_RECIRCULATE_STATE == currentPreTreatmentState )
+             {
+                signalResumePreTxRecirculate();
+             }
+             break;
+
         default:
             // do not handle other actions in pre-treatment mode
             break;