Index: firmware/App/Controllers/Valves.c
===================================================================
diff -u -r837e86dd59014bd075bc39839c8b4b6324288880 -rbc1ec8e71e5e5e7aef6d84775e07f5935653593f
--- firmware/App/Controllers/Valves.c	(.../Valves.c)	(revision 837e86dd59014bd075bc39839c8b4b6324288880)
+++ firmware/App/Controllers/Valves.c	(.../Valves.c)	(revision bc1ec8e71e5e5e7aef6d84775e07f5935653593f)
@@ -515,6 +515,35 @@
     BOOL result = u32ArrayOverride( message, &valveStates[0], NUM_OF_VALVES - 1, 0, NUM_OF_VALVE_STATES - 1 );
 
     return result;
+}
+
+/*********************************************************************//**
+ * @brief
+ * The testBCValveStatesOverride function overrides the state of all
+ * balancing chamber valves with a given bits (corresponding to BC valve
+ * enumeration order).
+ * @details \b Inputs: none
+ * @details \b Outputs: valveStates[]
+ * @param message Override message from Dialin which includes the states
+ * to override the balancing chamber valves to.
+ * @return TRUE if override successful, FALSE if not
+ *************************************************************************/
+BOOL testBCValveStatesOverride( MESSAGE_T *message )
+{
+    DD_BC_VALVE_OVERRIDE_PAYLOAD_T payload;
+    VALVES_T valve;
+    BOOL result = FALSE;
+
+    memcpy( (U08*)(&payload), message, sizeof( DD_BC_VALVE_OVERRIDE_PAYLOAD_T ) );
+    for ( valve = FIRST_BC_VALVE; valve <= LAST_BC_VALVE; valve++ )
+    {
+        U32                 mask = 0x1 << (valve - FIRST_BC_VALVE);
+        VALVE_STATE_NAMES_T pos  = ( ( ( payload.valveStatesBits & mask ) != 0 ) ? VALVE_STATE_OPEN : VALVE_STATE_CLOSED );
+
+        result = setValveState( valve, pos );
+    }
+
+    return result;
 }
 
 /*********************************************************************//**
Index: firmware/App/Controllers/Valves.h
===================================================================
diff -u -r88818319a9261c6adb3983b9219a0a05fef97c0b -rbc1ec8e71e5e5e7aef6d84775e07f5935653593f
--- firmware/App/Controllers/Valves.h	(.../Valves.h)	(revision 88818319a9261c6adb3983b9219a0a05fef97c0b)
+++ firmware/App/Controllers/Valves.h	(.../Valves.h)	(revision bc1ec8e71e5e5e7aef6d84775e07f5935653593f)
@@ -86,6 +86,12 @@
     U08 valvesUFStatus;                           ///< Ultrafiltration valves status.
     U08 valvesSensedState[ NUM_OF_VALVES ];       ///< DD valves sensed states.
 } DD_VALVES_DATA_T;
+
+/// Balancing chamber valve states override structure
+typedef struct
+{
+    U32 valveStatesBits;                          ///< Bits indicating whether balancing chamber valve states should be open(1) or closed(0).
+} DD_BC_VALVE_OVERRIDE_PAYLOAD_T;
 #pragma pack(pop)
 
 // ********** public function prototypes **********
@@ -101,8 +107,10 @@
 
 BOOL testValvesStatesPublishIntervalOverride( MESSAGE_T *message );
 BOOL testValveStateOverride( MESSAGE_T *message );
+BOOL testBCValveStatesOverride( MESSAGE_T *message );
 BOOL testValveSensedStateOverride( MESSAGE_T *message );
 BOOL testValveOpenCloseStateOverride( MESSAGE_T *message );
+
 
 /**@}*/
 
Index: firmware/App/Services/Messaging.c
===================================================================
diff -u -r8116b493a8085f28f85e5a9e8ead7e18d0dc77a8 -rbc1ec8e71e5e5e7aef6d84775e07f5935653593f
--- firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision 8116b493a8085f28f85e5a9e8ead7e18d0dc77a8)
+++ firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision bc1ec8e71e5e5e7aef6d84775e07f5935653593f)
@@ -137,6 +137,7 @@
     MSG_ID_DD_DIAL_DELIVERY_IN_PROGRESS_OVERRIDE_REQUEST,
     MSG_ID_DD_DIAL_DELIVERY_GOOD_TO_DELIVER_OVERRIDE_REQUEST,
     MSG_ID_DD_HEATERS_TARGET_TEMPERATURE_OVERRIDE_REQUEST,                            //55
+    MSG_ID_DD_BC_VALVE_STATES_OVERRIDE_REQUEST
 };
 
 /// Message handling function table
@@ -196,6 +197,7 @@
     &testDialDeliveryInProgressOverride,
     &testDialGoodToDeliverStatusOverride,
     &testHeaterTargetTemperatureOverride,                                              //55
+    &testBCValveStatesOverride
 };
 
 #define NUM_OF_FUNCTION_HANDLERS (sizeof(MSG_FUNCTION_HANDLERS) / sizeof(MsgFuncPtr))