Index: firmware/App/Modes/ModeInitPOST.c
===================================================================
diff -u -r685e17a553a4fdf7dd8b3715e95d151eeff3c866 -r1c628bfd5d6414b74b8cbd083f66839888a8236b
--- firmware/App/Modes/ModeInitPOST.c	(.../ModeInitPOST.c)	(revision 685e17a553a4fdf7dd8b3715e95d151eeff3c866)
+++ firmware/App/Modes/ModeInitPOST.c	(.../ModeInitPOST.c)	(revision 1c628bfd5d6414b74b8cbd083f66839888a8236b)
@@ -130,6 +130,10 @@
     switch ( postState )
     {
         case POST_STATE_START:
+            if ( getMonitoredLineLevel( MONITORED_LINE_24V ) < MIN_24V_MEASURED_FOR_AC )
+            {
+                initiatePowerOff();
+            }
             sendUIVersionRequest();
             postState = POST_STATE_FW_INTEGRITY;
             break;