Index: firmware/App/Modes/ModePreGenDialysate.c
===================================================================
diff -u -r6e6e587b8654dab3c596f6a905f857a3e7cf1e62 -rd639d50ed4ecba5c11a0ad7d8d6b7c91320ae7c0
--- firmware/App/Modes/ModePreGenDialysate.c	(.../ModePreGenDialysate.c)	(revision 6e6e587b8654dab3c596f6a905f857a3e7cf1e62)
+++ firmware/App/Modes/ModePreGenDialysate.c	(.../ModePreGenDialysate.c)	(revision d639d50ed4ecba5c11a0ad7d8d6b7c91320ae7c0)
@@ -531,6 +531,23 @@
             break;
 
         case DD_PRE_GEN_DIALYSATE_WAIT_FOR_GEND:
+            setValveState( D34_VALV, VALVE_STATE_OPEN );
+            setValveState( D91_VALV, VALVE_STATE_CLOSED );
+            setValveState( D35_VALV, VALVE_STATE_CLOSED );
+            setValveState( D40_VALV, VALVE_STATE_CLOSED );
+            // open BC fresh side
+            setValveState( D19_VALV, VALVE_STATE_CLOSED );
+            setValveState( D20_VALV, VALVE_STATE_CLOSED );
+            setValveState( D21_VALV, VALVE_STATE_CLOSED );
+            setValveState( D22_VALV, VALVE_STATE_CLOSED );
+            // close BC spent side
+            setValveState( D23_VALV, VALVE_STATE_CLOSED );
+            setValveState( D24_VALV, VALVE_STATE_CLOSED );
+            setValveState( D25_VALV, VALVE_STATE_CLOSED );
+            setValveState( D26_VALV, VALVE_STATE_CLOSED );
+            //vent air to chamber h
+            setValveState( D47_VALV, VALVE_STATE_CLOSED );
+            setValveState( D14_VALV, VALVE_STATE_CLOSED );
             //TODO: update to recirculation instead of off states.
             requestConcentratePumpOff( D10_PUMP, FALSE );
             requestConcentratePumpOff( D11_PUMP, FALSE );