Index: firmware/App/Controllers/BalancingChamber.c
===================================================================
diff -u -rc1557cc79c8f0b0c358963c99d83015bd3b37e42 -r67d2fdfc9ec326b98b5a0ac2dbfcee283c8791af
--- firmware/App/Controllers/BalancingChamber.c	(.../BalancingChamber.c)	(revision c1557cc79c8f0b0c358963c99d83015bd3b37e42)
+++ firmware/App/Controllers/BalancingChamber.c	(.../BalancingChamber.c)	(revision 67d2fdfc9ec326b98b5a0ac2dbfcee283c8791af)
@@ -748,6 +748,29 @@
 
 /*********************************************************************//**
  * @brief
+ * The valveControlForBCSpentSideOnlyOpenState function opens the spent side
+ * balancing chamber valves and closes the fresh side valves.
+ * @details \b Inputs: none
+ * @details \b Outputs: valve states
+ * @return none.
+ *************************************************************************/
+void valveControlForBCSpentSideOnlyOpenState( void )
+{
+    // Open spent side valves D23,D24,D25,D26
+    setValveState( D23_VALV, VALVE_STATE_OPEN );
+    setValveState( D25_VALV, VALVE_STATE_OPEN );
+    setValveState( D24_VALV, VALVE_STATE_OPEN );
+    setValveState( D26_VALV, VALVE_STATE_OPEN );
+
+    // Close fresh balancing chamber valves D19,D20,D21,D22
+    setValveState( D19_VALV, VALVE_STATE_CLOSED );
+    setValveState( D20_VALV, VALVE_STATE_CLOSED );
+    setValveState( D21_VALV, VALVE_STATE_CLOSED );
+    setValveState( D22_VALV, VALVE_STATE_CLOSED );
+}
+
+/*********************************************************************//**
+ * @brief
  * The valveControlForBCState1FreshSideClose function closes only the fresh-side
  * balancing chamber valves opened during state 1 fill.
  * @details \b Inputs: none