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
             {