Index: firmware/App/Modes/ModePreTreat.c
===================================================================
diff -u -r94b71001f7153c03fedd6904534ef1c5180f5e4a -r5fa35605ee20c25df3bdc822a772e4a6fe6283a6
--- firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision 94b71001f7153c03fedd6904534ef1c5180f5e4a)
+++ firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision 5fa35605ee20c25df3bdc822a772e4a6fe6283a6)
@@ -1178,7 +1178,8 @@
 
     if ( ( TRUE == reservoirFilledStatus[ DG_RESERVOIR_1 ] ) && ( FALSE == reservoirFilledStatus[ DG_RESERVOIR_2 ] ) )
     {
-        if ( DG_RESERVOIR_2 == getDGInactiveReservoir() )
+        if ( ( DG_RESERVOIR_2 == getDGInactiveReservoir() ) &&
+           ( TRUE == reservoirFlags[ DG_RESERVOIR_2 ].startFlushFill ) )
         {
             state = PRE_TREATMENT_RESERVOIR_MGMT_DRAIN_CMD_STATE;
         }