Index: firmware/App/Controllers/DryBiCart.c
===================================================================
diff -u -r95fa5cf340d60a9efcba15c4b5af6554e36fc551 -r98f2b3df325b323494f2e110f71a4163d4df7fbd
--- firmware/App/Controllers/DryBiCart.c	(.../DryBiCart.c)	(revision 95fa5cf340d60a9efcba15c4b5af6554e36fc551)
+++ firmware/App/Controllers/DryBiCart.c	(.../DryBiCart.c)	(revision 98f2b3df325b323494f2e110f71a4163d4df7fbd)
@@ -96,6 +96,7 @@
     DRY_BICART_INITIAL_FILL,                                                                    ///< Dry bicart initial fill
     DRY_BICART_SUPPLY,                                                                          ///< Dry bicart chamber fill
     DRY_BICART_DRAIN,                                                                           ///< Dry bicart drain
+    DRY_BICART_DEPRESSURIZE,                                                                    ///< Dry bicart depressurize
     NUM_OF_DRY_BICART_OPERATION                                                                 ///< Number of dry bicart operation
 } DRY_BICART_OPERATION_T;
 
@@ -298,6 +299,11 @@
             execDryBicartDrainMode();
             break;
 
+        case DRY_BICART_DEPRESSURIZE:
+            // Dry bicart depressurize
+            execDryBicartDepressurize();
+            break;
+
         default:
             // software fault,
             dryBicartStartRequest = DRY_BICART_IDLE;
@@ -712,7 +718,8 @@
 
 /*********************************************************************//**
  * @brief
- * The updateDrybicartOperation function initiates the water fill, bicarbonate supply or bicarbonate drain
+ * The updateDrybicartOperation function initiates bicart fill water, bicarbonate supply,
+ * bicart drain or bicart depressurize
  * operation
  * @details \b Inputs: none
  * @details \b Outputs: dryBicartStartRequest
@@ -735,6 +742,10 @@
         //drain
         dryBicartStartRequest = DRY_BICART_DRAIN;
     }
+    else if ( TRUE == getBicartDepressurizeRequested() )
+    {
+        dryBicartStartRequest = DRY_BICART_DEPRESSURIZE;
+    }
     else
     {
         // idle
@@ -1692,7 +1703,7 @@
  *************************************************************************/
 BOOL testDryBiCartDepressurizeRequestOverride( MESSAGE_T *message )
 {
-    BOOL result = setBicartDrainRequested();//u32Override( message, &dryBiCartDepressurizeRequested, FALSE, TRUE );
+    BOOL result = u32Override( message, &dryBiCartDepressurizeRequested, FALSE, TRUE );
 
     return result;
 }
Index: firmware/App/Tasks/TaskGeneral.c
===================================================================
diff -u -ra6ead936473ef260bbd330050fcf7e1b10120175 -r98f2b3df325b323494f2e110f71a4163d4df7fbd
--- firmware/App/Tasks/TaskGeneral.c	(.../TaskGeneral.c)	(revision a6ead936473ef260bbd330050fcf7e1b10120175)
+++ firmware/App/Tasks/TaskGeneral.c	(.../TaskGeneral.c)	(revision 98f2b3df325b323494f2e110f71a4163d4df7fbd)
@@ -100,13 +100,11 @@
 
     if ( FALSE == getTestConfigStatus( TEST_CONFIG_DD_DISABLE_DRY_BICARB ) )
     {
-        // manage drybicart fill, supply and drain state machines
+        // Control drybicart fill, supply , drain and depressurize state machines
         execDryBicart();
-
-        // manage drybicart depressurize state machines
-        execDryBicartDepressurize();
     }
 
+    // Control closed loop mixing of bicarb and acid
     execMixingControl();
 
     // Control RO pump