Index: firmware/App/Modes/ModeGenIdle.c
===================================================================
diff -u -r164e1a3ffca18c703676bc7f57f5903c76050600 -re6e05130918b0aa7cd742d88e3b2cd850316cde7
--- firmware/App/Modes/ModeGenIdle.c	(.../ModeGenIdle.c)	(revision 164e1a3ffca18c703676bc7f57f5903c76050600)
+++ firmware/App/Modes/ModeGenIdle.c	(.../ModeGenIdle.c)	(revision e6e05130918b0aa7cd742d88e3b2cd850316cde7)
@@ -303,6 +303,14 @@
         handleEmptyBottleFlag = TRUE;
     }
 
+    if ( ( TRUE == handleEmptyBottleFlag ) &&
+         ( isAlarmActive( ALARM_ID_DG_ACID_BOTTLE_LOW_VOLUME ) != TRUE ) &&
+         ( isAlarmActive( ALARM_ID_DG_BICARB_BOTTLE_LOW_VOLUME ) != TRUE ) )
+    {
+        // User acknowledged empty conc bottle alarm(s) and so time to start a fill
+        startFillCmd( getTargetFillVolumeML(), getTargetFillFlowRateLPM() );
+    }
+
     return result;
 }
 
Index: firmware/App/Services/Reservoirs.c
===================================================================
diff -u -r164e1a3ffca18c703676bc7f57f5903c76050600 -re6e05130918b0aa7cd742d88e3b2cd850316cde7
--- firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision 164e1a3ffca18c703676bc7f57f5903c76050600)
+++ firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision e6e05130918b0aa7cd742d88e3b2cd850316cde7)
@@ -354,16 +354,16 @@
     cmdResponse.rejectCode = DG_CMD_REQUEST_REJECT_REASON_NONE;
 
     // fill command only valid in generation idle mode
-    if ( ( DG_MODE_GENE == getCurrentOperationMode() ) && ( ( DG_GEN_IDLE_MODE_STATE_FLUSH_WATER == getCurrentGenIdleState() ) ||
-                                                            ( DG_GEN_IDLE_MODE_STATE_HANDLE_BAD_FILL == getCurrentGenIdleState() ) ) )
+    if ( ( DG_MODE_GENE == getCurrentOperationMode() ) &&
+         ( ( DG_GEN_IDLE_MODE_STATE_FLUSH_WATER == getCurrentGenIdleState() ) || ( DG_GEN_IDLE_MODE_STATE_HANDLE_BAD_FILL == getCurrentGenIdleState() ) ) )
     {
         // validate parameters
         if ( fillToVolMl < MAX_FILL_VOLUME_ML )
         {
             fillVolumeTargetMl.data = fillToVolMl;
             cmdResponse.rejected    = FALSE;
 
-            if ( ( FALSE == isAlarmActive( ALARM_ID_DG_ACID_BOTTLE_LOW_VOLUME ) ) ||    // reject moving to fill mode if
+            if ( ( FALSE == isAlarmActive( ALARM_ID_DG_ACID_BOTTLE_LOW_VOLUME ) ) &&    // reject moving to fill mode if
                  ( FALSE == isAlarmActive( ALARM_ID_DG_BICARB_BOTTLE_LOW_VOLUME ) ) )   // alarm is active
             {
                 requestNewOperationMode( DG_MODE_FILL );