Index: firmware/App/Controllers/Voltages.c
===================================================================
diff -u -r79cee95c1a25a2efa62bf7d4640246e507230b4a -r3a35ddc9052d17a66407058dc2e74d75920f43f4
--- firmware/App/Controllers/Voltages.c	(.../Voltages.c)	(revision 79cee95c1a25a2efa62bf7d4640246e507230b4a)
+++ firmware/App/Controllers/Voltages.c	(.../Voltages.c)	(revision 3a35ddc9052d17a66407058dc2e74d75920f43f4)
@@ -22,6 +22,7 @@
 #include "PersistentAlarm.h"
 #include "SafetyShutdown.h"
 #include "SystemCommMessages.h"
+#include "SystemComm.h"
 #include "TaskGeneral.h"
 #include "Timers.h"
 #include "Voltages.h"
@@ -258,7 +259,7 @@
 
             // Just to make sure we are not clearing the AC power lost in treatment alarm until DG powers up and not in
             // POST mode, to avoid HD sending commands when DG is not yet ready.
-            if ( DG_MODE_INIT != getDGOpMode() )
+            if ( ( DG_MODE_INIT != getDGOpMode() && TRUE == isDGCommunicating() ) )
             {
                 clearAlarmCondition( ALARM_ID_HD_AC_POWER_LOST_IN_TREATMENT );
             }