Index: firmware/App/Modes/Rinseback.c
===================================================================
diff -u -rc1b9ac0dbf2196280895d2e440dd7ac288ac8424 -rd6eafb51a8a2eb0d30ac9a36c80af2f953bf564d
--- firmware/App/Modes/Rinseback.c	(.../Rinseback.c)	(revision c1b9ac0dbf2196280895d2e440dd7ac288ac8424)
+++ firmware/App/Modes/Rinseback.c	(.../Rinseback.c)	(revision d6eafb51a8a2eb0d30ac9a36c80af2f953bf564d)
@@ -109,6 +109,7 @@
 
 static void publishRinsebackData( void );
 static U32 getPublishRinsebackInterval( void );
+static void handleDialysateRecircOnOff( void );
 
 /*********************************************************************//**
  * @brief
@@ -209,6 +210,9 @@
     setBloodPumpTargetFlowRate( rate, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_CLOSED_LOOP );
     // Start air trap leveling control
     startAirTrapControl();
+    // Re-circulate dialysate side of dialyzer w/ heating to maintain temperature
+    setDialInPumpTargetFlowRate( DIALYSATE_FLOW_RATE_FOR_RECIRC, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_CLOSED_LOOP );
+    cmdStartDGTrimmerHeater();
 }
 
 /*********************************************************************//**
@@ -304,6 +308,9 @@
             break;
     }
 
+    // Start/stop dialysate recirculation during rinseback mode based on active alarms that would block it
+    handleDialysateRecircOnOff();
+
     if ( priorSubState != rinsebackState )
     {
         SEND_EVENT_WITH_2_U32_DATA( HD_EVENT_SUB_STATE_CHANGE, priorSubState, rinsebackState );
@@ -1041,7 +1048,30 @@
     return result;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The handleDialysateRecircOnOff function starts/stops dialysate recirculation
+ * during rinseback sub-mode based on active alarm properties.
+ * @details Inputs: none
+ * @details Outputs: dialysate recirculation started or stopped as appropriate
+ * @return none
+ *************************************************************************/
+static void handleDialysateRecircOnOff( void )
+{
+    // Stop dialysate recirc if blocked by alarm
+    if ( ( TRUE == isDialysateRecircBlocked() ) && ( TRUE == isDialInPumpRunning() ) )
+    {
+        signalDialInPumpHardStop();
+        cmdStopDGTrimmerHeater();
+    }
+    else if ( ( isDialysateRecircBlocked() != TRUE ) && ( isDialInPumpRunning() != TRUE ) )
+    {
+        setDialInPumpTargetFlowRate( DIALYSATE_FLOW_RATE_FOR_RECIRC, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_CLOSED_LOOP );
+        cmdStartDGTrimmerHeater();
+    }
+}
 
+
 /*************************************************************************
  *                       TEST SUPPORT FUNCTIONS
  *************************************************************************/