Index: firmware/App/Controllers/DGInterface.c
===================================================================
diff -u -r50082d70d2ae672e5b1663c2b214e36a4bdd57e3 -r3635df042e6e3a86cc6b161290637f899fbaa6c2
--- firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision 50082d70d2ae672e5b1663c2b214e36a4bdd57e3)
+++ firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision 3635df042e6e3a86cc6b161290637f899fbaa6c2)
@@ -246,6 +246,11 @@
 
         // Trigger alarm if not receiving new DG op mode message in timely manner
         checkDGDataFreshness( ALARM_ID_HD_DG_NEW_OPERATION_MODE_MESSAGE_NOT_RECEIVE, &dgOpModeDataFreshFlag );
+        if ( TRUE == isAlarmActive( ALARM_ID_HD_DG_NEW_OPERATION_MODE_MESSAGE_NOT_RECEIVE ) )
+        {
+            // we don't want to keep thinking DG is in a useful mode - set it to fault mode until DG is able to report its' true mode status
+            setDGOpMode( DG_MODE_FAUL, 0 );
+        }
 
         // Check to see if DG has restarted
         checkDGRestart();
Index: firmware/App/Services/SystemComm.c
===================================================================
diff -u -r4f3b9e168915ab13dfcdc74462d7142115cc2d57 -r3635df042e6e3a86cc6b161290637f899fbaa6c2
--- firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 4f3b9e168915ab13dfcdc74462d7142115cc2d57)
+++ firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 3635df042e6e3a86cc6b161290637f899fbaa6c2)
@@ -787,6 +787,8 @@
             if ( MODE_PRET == opMode || MODE_TREA == opMode || MODE_POST == opMode )
             {
                 activateAlarmNoData( ALARM_ID_HD_DG_COMM_TIMEOUT );
+                // we don't want to keep thinking DG is in a useful mode - set it to fault mode until DG is able to report its' true mode status
+                setDGOpMode( DG_MODE_FAUL, 0 );
             }
             else // Otherwise clear the alarm
             {