Index: firmware/App/Controllers/ConcentratePumps.c
===================================================================
diff -u -rd0536d759cb33f099357033c3429401ff1637d26 -r4ea1d6f81be132a2959ba1d11555102761b5f080
--- firmware/App/Controllers/ConcentratePumps.c	(.../ConcentratePumps.c)	(revision d0536d759cb33f099357033c3429401ff1637d26)
+++ firmware/App/Controllers/ConcentratePumps.c	(.../ConcentratePumps.c)	(revision 4ea1d6f81be132a2959ba1d11555102761b5f080)
@@ -19,6 +19,7 @@
 #include "ConcentratePumps.h"
 #include "FPGA.h"
 #include "MessageSupport.h"
+#include "OperationModes.h"
 #include "PersistentAlarm.h"
 #include "SystemCommMessages.h"
 #include "TaskGeneral.h"
@@ -389,6 +390,47 @@
 
 /*********************************************************************//**
  * @brief
+ * The handleConcentratePumpParkRequest function accepts/rejects the park
+ * concentrate pumps request.
+ * @details Inputs: Pump state and DG operating mode
+ * @details Outputs: command response set to true if able to perform parking pump.
+ * @return result as true if park is accomplished.
+ *************************************************************************/
+BOOL handleConcentratePumpParkRequest( void )
+{
+    DG_CMD_RESPONSE_T cmdResponse;
+    BOOL result            = FALSE;
+    DG_OP_MODE_T opMode    = getCurrentOperationMode();
+
+    cmdResponse.commandID  = DG_CMD_PARK_CONCENTRATE_PUMPS;
+    cmdResponse.rejected   = FALSE;
+    cmdResponse.rejectCode = DG_CMD_REQUEST_REJECT_REASON_NONE;
+
+    // pumps should be not ON and DG operation mode is not in filling and fault mode
+    if ( ( concentratePumps[CONCENTRATEPUMPS_CP1_ACID].execState == CONCENTRATE_PUMP_OFF_STATE ) &&
+         ( concentratePumps[CONCENTRATEPUMPS_CP2_BICARB].execState == CONCENTRATE_PUMP_OFF_STATE ) &&
+         ( DG_MODE_FILL != opMode ) &&
+         ( DG_MODE_FAUL != opMode ) )
+    {
+        // Park concentrate pump
+        requestConcentratePumpOff( CONCENTRATEPUMPS_CP1_ACID, PARK_CONC_PUMPS );
+        requestConcentratePumpOff( CONCENTRATEPUMPS_CP2_BICARB, PARK_CONC_PUMPS );
+        result                  = TRUE;
+    }
+    else
+    {
+        cmdResponse.rejected    = TRUE;
+        cmdResponse.rejectCode  = DG_CMD_REQUEST_REJECT_REASON_INVALID_MODE;
+        result                  = FALSE;
+    }
+
+    sendCommandResponseMsg( &cmdResponse );
+
+    return result;
+}
+
+/*********************************************************************//**
+ * @brief
  * The requestConcentratePumpOff function requests the module to turn off
  * the concentrate pumps.
  * @details Inputs: none