Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r3d131237935eb36e56e0d057a713430e31dc6405 -r2fff37fa585181917705645494549b5fd4a4d522
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 3d131237935eb36e56e0d057a713430e31dc6405)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 2fff37fa585181917705645494549b5fd4a4d522)
@@ -772,13 +772,17 @@
  *************************************************************************/
 void handleAlarmClear( MESSAGE_T *message )
 {
+    BOOL result = FALSE;
+
     if ( message->hdr.payloadLen == sizeof( U32 ) )
     {
         U32 alarmId;
 
+        result = TRUE;
         memcpy(&alarmId, message->payload, sizeof( U32 ) );
         clearAlarm( (ALARM_ID_T)alarmId );
     }
+    sendAckResponseMsg( (MSG_ID_T)message->hdr.msgID, COMM_BUFFER_OUT_CAN_DG_2_HD, result );
 }
 
 /*********************************************************************//**
@@ -3362,6 +3366,38 @@
 }
 
 /*********************************************************************//**
+ * @brief
+ * The handleFilterFlushTimePeriodOverride function handles a request
+ * to override the filter flush time period value.
+ * @details Inputs: none
+ * @details Outputs: message handled
+ * @param message a pointer to the message to handle
+ * @return none
+ *************************************************************************/
+void handleFilterFlushTimePeriodOverride( MESSAGE_T *message )
+{
+    TEST_OVERRIDE_PAYLOAD_T payload;
+    BOOL result = FALSE;
+
+    // verify payload length
+    if ( sizeof( TEST_OVERRIDE_PAYLOAD_T ) == message->hdr.payloadLen )
+    {
+        memcpy( &payload, message->payload, sizeof( TEST_OVERRIDE_PAYLOAD_T ) );
+        if ( FALSE == payload.reset )
+        {
+            result = testSetFilterFlushTimePeriodOverride( payload.state.u32 );
+        }
+        else
+        {
+            result = testResetFilterFlushTimePeriodOverride();
+        }
+    }
+
+    // respond to request
+    sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
+}
+
+/*********************************************************************//**
 * @brief
 * The handleStartStopDGChemicalDisinfect function handles a request to start
 * or stop DG chemical disinfect mode.