Index: firmware/App/Controllers/BalancingChamber.c
===================================================================
diff -u -r8e51a0b2c665b26f2a48430c10717762c427e583 -rd8bed1d90475d31ed0f787017f392e7c1e498620
--- firmware/App/Controllers/BalancingChamber.c	(.../BalancingChamber.c)	(revision 8e51a0b2c665b26f2a48430c10717762c427e583)
+++ firmware/App/Controllers/BalancingChamber.c	(.../BalancingChamber.c)	(revision d8bed1d90475d31ed0f787017f392e7c1e498620)
@@ -7,8 +7,8 @@
 *
 * @file    BalancingChamber.c
 *
-* @author  (last)      Varshini Nagabooshanam
-* @date    (last)      26-Jan-2026
+* @author  (last)      Vinayakam Mani
+* @date    (last)      03-Sep-2025
 *
 * @author  (original)  Vinayakam Mani
 * @date    (original)  28-Jan-2025
Index: firmware/App/Controllers/Valves.c
===================================================================
diff -u -r7e2325379e4c4f7f891776646fbbcd4aa9c6eaca -rd8bed1d90475d31ed0f787017f392e7c1e498620
--- firmware/App/Controllers/Valves.c	(.../Valves.c)	(revision 7e2325379e4c4f7f891776646fbbcd4aa9c6eaca)
+++ firmware/App/Controllers/Valves.c	(.../Valves.c)	(revision d8bed1d90475d31ed0f787017f392e7c1e498620)
@@ -35,7 +35,7 @@
 #define ENERGIZED                                       1                                                           ///< 1 for energized valve.
 #define ALL_VALVES_DEENERGIZED                          0x0000                                                      ///< 0 in U16 bit field for all valves.
 
-#define VALVE_PWM_PERIOD                                50                                                          ///< Valve PWM Period in 0.1 us res ( 20kHz )
+#define VALVE_PWM_PERIOD                                500                                                          ///< Valve PWM Period in 0.1 us res ( 20kHz )
 #define VALVE_PWM_LOW                                   ( VALVE_PWM_PERIOD * 0.2 )                                  ///< Valve low PWM percentage
 #define VALVE_PWM_PULL_IN                               100                                                         ///< Valve 'strike' period at 100% PWM in ms
 
@@ -126,7 +126,7 @@
 
     // TODO set FPGA PWM after finalizing the decision on valve strike and hold behavior
     // initially set valve PWM configuration and enable
-//    setFPGAPWMConfigurations();
+    //setFPGAPWMConfigurations();
 
     // initially set all valves to de-energized state via FPGA
     setFPGADDValveStates( commandedValvesStates );
@@ -175,7 +175,7 @@
         valveSPBits |= 0x01 << ( i - FIRST_SP_VALVE );
     }
 
-    for ( i = FIRST_IO_VALVE; i <= LAST_IO_VALVE; i++ )
+    for ( i = M12_VALV; i <= LAST_IO_VALVE; i++ )
     {
         valveIOBits |= 0x01 << ( i - FIRST_IO_VALVE );
     }
@@ -525,25 +525,6 @@
 
 /*********************************************************************//**
  * @brief
- * The setHydValvesStatetoClosedState function sets all Hydraulics / DD
- * valves to close state except balancing chamber, UF and Inlet water control.
- * @details \b Inputs: none
- * @details \b Outputs: valve states
- * @return none.
- *************************************************************************/
-void setHydValvesStatetoClosedState( void )
-{
-    DD_VALVES_T valve;
-
-    // Set all Hydraulics valves to closed state
-    for ( valve = FIRST_HYD_VALVE; valve <= LAST_HYD_VALVE; valve++ )
-    {
-        setValveState( valve, VALVE_STATE_CLOSED );
-    }
-}
-
-/*********************************************************************//**
- * @brief
  * The setRecoveryValvesConfig function sets all recovery valves per
  * recovery configuration from institutional record.
  * @details \b Inputs: none
Index: firmware/App/DDCommon.h
===================================================================
diff -u -r7e2325379e4c4f7f891776646fbbcd4aa9c6eaca -rd8bed1d90475d31ed0f787017f392e7c1e498620
--- firmware/App/DDCommon.h	(.../DDCommon.h)	(revision 7e2325379e4c4f7f891776646fbbcd4aa9c6eaca)
+++ firmware/App/DDCommon.h	(.../DDCommon.h)	(revision d8bed1d90475d31ed0f787017f392e7c1e498620)
@@ -25,7 +25,7 @@
 #define DD_VERSION_MAJOR        0
 #define DD_VERSION_MINOR        0
 #define DD_VERSION_MICRO        0
-#define DD_VERSION_BUILD  42
+#define DD_VERSION_BUILD        51
 
 // ********** development build switches **********
 
@@ -51,6 +51,9 @@
 //Uncomment below for Maxon controller speed change
 #define __MAXON_SPEED_UPDATE__    1
 
+//UnComment below for DryBicarb testing
+//#define __DRY_BICARB__            1
+
 //Uncomment below to disable heaters debug message
 #define __HEATERS_DEBUG__         1
 
Index: firmware/App/Services/Messaging.c
===================================================================
diff -u -r89c8709e3b27648926fbb20f25c9a67cbeb99adc -rd8bed1d90475d31ed0f787017f392e7c1e498620
--- firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision 89c8709e3b27648926fbb20f25c9a67cbeb99adc)
+++ firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision d8bed1d90475d31ed0f787017f392e7c1e498620)
@@ -250,6 +250,12 @@
     { MSG_ID_DD_RINSE_PUMP_PWM_PERCENT_OVERRIDE_REQUEST,                            &testRinsePumpPWMPercentOverride },
     { MSG_ID_DD_RINSE_PUMP_TURN_ON_OFF_REQUEST,                                     &testRinsePumpTurnOnOffRequest },
     { MSG_ID_FP_SET_START_STOP_OVERRIDE_REQUEST,                                    &testSetGeneratePermeateSignal },
+    { MSG_ID_DD_DRY_BICART_DATA_PUBLISH_INTERVAL_OVERRIDE_REQUEST,                  &testDryBiCartDataPublishIntervalOverride },
+    { MSG_ID_DD_DRY_BICART_FILL_CYCLE_MAX_OVERRIDE_REQUEST,                         &testDryBiCartFillCycleMaxCountOverride },
+    { MSG_ID_DD_DRY_BICART_FILL_REQUEST_OVERRIDE_REQUEST,                           &testDryBiCartFillRequestOverride },
+    { MSG_ID_DD_BICARB_CHAMBER_FILL_REQUEST_OVERRIDE_REQUEST,                       &testBiCarbChamberFillRequestOverride },
+    { MSG_ID_DD_BICART_DRAIN_REQUEST_OVERRIDE_REQUEST,                              &testDryBiCartDrainRequestOverride },
+    { MSG_ID_DD_BICART_CARTRIDGE_SELECT_OVERRIDE_REQUEST,                           &testDryBiCartTypeOverride },
     { MSG_ID_FP_RO_REJECTION_RATIO_PUBLISH_INTERVAL_OVERRIDE_REQUEST,               &testRORejectionRatioDataPublishIntervalOverride },
     { MSG_ID_FP_RO_FILTERED_REJECTION_RATIO_OVERRIDE_REQUEST,                       &testRORejectionRatioFilteredOverride },
     { MSG_ID_FP_SET_TEST_CONFIGURATION,                                             &testSetTestConfiguration },
@@ -268,12 +274,7 @@
     { MSG_ID_FP_DEF_PRE_GEN_PUBLISH_INTERVAL_OVERRIDE_REQUEST,                      &testPreGenPermeateDefDataPublishIntervalOverride},
     { MSG_ID_FP_DEF_GEN_PUBLISH_INTERVAL_OVERRIDE_REQUEST,                          &testGenPermeateDefDataPublishIntervalOverride},
     { MSG_ID_FP_DEF_STATUS_REQUEST,                                                 &testGetFPDefeaturedStatus },
-    { MSG_ID_DD_DRY_BICART_DATA_PUBLISH_INTERVAL_OVERRIDE_REQUEST,                  &testDryBiCartDataPublishIntervalOverride },
-    { MSG_ID_DD_DRY_BICART_FILL_CYCLE_MAX_OVERRIDE_REQUEST,                         &testDryBiCartFillCycleMaxCountOverride },
-    { MSG_ID_DD_DRY_BICART_FILL_REQUEST_OVERRIDE_REQUEST,                           &testDryBiCartFillRequestOverride },
     { MSG_ID_FP_RO_FILTERED_REJECTION_RATIO_OVERRIDE_REQUEST,                       &testRORejectionRatioFilteredOverride },
-    { MSG_ID_DD_BICART_DRAIN_REQUEST_OVERRIDE_REQUEST,                              &testDryBiCartDrainRequestOverride },
-    { MSG_ID_DD_BICART_CARTRIDGE_SELECT_OVERRIDE_REQUEST,                           &testDryBiCartTypeOverride },
 #ifdef __TEENSY_CONDUCTIVITY_DRIVER__
     { MSG_ID_DD_SET_CONDUCTIVITY_MODEL_REQUEST,                                     &testSetTeenyConductivityModel },
 #endif