Index: firmware/App/Controllers/BalancingChamber.c
===================================================================
diff -u -recd204503f9f4837800080a58c07dac8a2e8d602 -rae3a2d3b6952e59cdf469d48e9f4c26574564eff
--- firmware/App/Controllers/BalancingChamber.c	(.../BalancingChamber.c)	(revision ecd204503f9f4837800080a58c07dac8a2e8d602)
+++ firmware/App/Controllers/BalancingChamber.c	(.../BalancingChamber.c)	(revision ae3a2d3b6952e59cdf469d48e9f4c26574564eff)
@@ -8,7 +8,7 @@
 * @file    BalancingChamber.c
 *
 * @author  (last)      Sameer Kalliadan Poyil
-* @date    (last)      16-Apr-2026
+* @date    (last)      28-Apr-2026
 *
 * @author  (original)  Vinayakam Mani
 * @date    (original)  28-Jan-2025
@@ -22,6 +22,7 @@
 #include "DryBiCart.h"
 #include "FpgaDD.h"
 #include "Heaters.h"
+#include "Level.h"
 #include "ModeGenDialysate.h"
 #include "ModeStandby.h"
 #include "Messaging.h"
@@ -254,6 +255,8 @@
  *************************************************************************/
 U32 execBalancingChamberControl( void )
 {
+    LVL_STATE_T bicarbChamberLevel        = getBicarbChamberLevelStatus();
+
     updateBalChamberSwitchingPeriod();
 
     // Increment counter indicating fill is in progress.
@@ -262,6 +265,17 @@
 
     if ( ( getTestConfigStatus( TEST_CONFIG_DD_ENABLE_DRY_BICARB ) == TRUE ) && ( balChamberExecState > BAL_CHAMBER_STATE_IDLE ) )
     {
+#ifdef CONDUCTIVE_LEVEL_SENSOR_ENABLED
+        if ( LVL_STATE_LOW == bicarbChamberLevel )
+        {
+            if ( FALSE == setBicarbChamberFillRequested() )
+            {
+                // TODO
+                //drybicart state machines are combined and so this is not an issue in future
+                //set alarm ?
+            }
+        }
+#else // time based chamber F fill
         // Increment counter for dry bicarb chamber fill
         bicarbChamberPeriodicFillCounter += 1;
         // Fill bicarb chamber once every 60secs.
@@ -275,6 +289,7 @@
             }
             bicarbChamberPeriodicFillCounter = 0;
         }
+#endif
     }
 
     switch ( balChamberExecState )