Index: firmware/App/Controllers/DryBiCart.c
===================================================================
diff -u -r2fb473f4574f9c150849bb39991a31bcadaae693 -r9af3827512621c9c710adea691c5e42f07023485
--- firmware/App/Controllers/DryBiCart.c	(.../DryBiCart.c)	(revision 2fb473f4574f9c150849bb39991a31bcadaae693)
+++ firmware/App/Controllers/DryBiCart.c	(.../DryBiCart.c)	(revision 9af3827512621c9c710adea691c5e42f07023485)
@@ -55,11 +55,11 @@
 //#define VALV_D80_MAX_OPEN_TIME_MS                   ( 10 * MS_PER_SECOND )                      ///< Max time allowed for opening D80 valve during bicarb chamber (F) fill.
 #define VALV_D80_MAX_OPEN_TIME_MS                   ( 500 )                                      ///< Max time allowed for opening D80 valve during bicarb chamber (F) fill.
 #define DRY_BICART_MAX_DRAIN_TIME_MS                ( 240 * MS_PER_SECOND )                     ///< Max drain time for bicart chamber in ms.
-#define DRY_BICART_DRAIN_COND_SAMPLE_PERIOD_MS      50                                          ///< Conductivity sample period
+#define DRY_BICART_DRAIN_COND_SAMPLE_PERIOD_MS      500                                          ///< Conductivity sample period
 #define DRY_BICART_DRAIN_COND_ZERO_THRESH           0.05F                                       ///< "Zero" conductivity threshold
 #define DRY_BICART_DRAIN_COND_STABLE_SAMPLES        10U                                         ///< Debounce samples (10*50ms=500ms)
 #define DRY_BICART_DRAIN_FLUID_PHASE_TIME_MS        ( 3 * MS_PER_SECOND )                       ///< Time to stay in fluid drain per cycle
-#define DRY_BICART_DRAIN_VENT_PHASE_TIME_MS         1500                                        ///< Time to keep D64 open per vent cycle
+#define DRY_BICART_DRAIN_VENT_PHASE_TIME_MS         ( 8 * MS_PER_SECOND )                       ///< Time to keep D64 open per vent cycle
 #define DRY_BICART_DRAIN_COND_STABLE_COUNT_MAX      0xFFFFU
 
 /// Payload record structure for dry bicart fill request
@@ -176,13 +176,13 @@
     // Dry bicart fill exec
     execDryBicartFillMode();
 
-    //Fill Bicarb chamber F
+    // Fill Bicarb chamber F
     execBicarbChamberFillMode();
 
-    //Drain Bicart Chamber exec
+    // Dry bicart drain exec
     execDryBicartDrainMode();
 
-    //Publish dry bicart data
+    // Publish dry bicart data
     publishDryBicartData();
 }
 
@@ -609,14 +609,14 @@
             dryBiCartDrainExecState = handleDryBicartPressureEquillibriumState();
              break;
 
-        case DRY_BICART_FLUID_DRAIN_END_STATE:
-            dryBiCartDrainExecState = handleDryBicartFluidDrainEndState();
-            break;
-
         case DRY_BICART_FLUID_DRAIN_DURATION_CHECK_STATE:
             dryBiCartDrainExecState = handleDryBicartFluidDrainDurationCheckState();
             break;
 
+        case DRY_BICART_FLUID_DRAIN_END_STATE:
+            dryBiCartDrainExecState = handleDryBicartFluidDrainEndState();
+            break;
+
         default:
             SET_ALARM_WITH_2_U32_DATA( ALARM_ID_DD_SOFTWARE_FAULT, SW_FAULT_ID_DRY_BICART_DRAIN_INVALID_EXEC_STATE, dryBiCartDrainExecState );
             break;
@@ -648,16 +648,18 @@
     //Close D14 valve
     setValveState( D14_VALV, VALVE_STATE_CLOSED );
 
-    // RUn D10 IN OPpen loop mode(max speed)
-    setConcentratePumpTargetSpeed( D10_PUMP, CONCENTRATE_PUMP_MAX_SPEED, 0xFFFF );
+    // Run D10 IN Open loop mode(max speed)
+    setConcentratePumpTargetSpeed( D10_PUMP, CONCENTRATE_PUMP_MAX_SPEED, DOSING_CONT_VOLUME );
     requestConcentratePumpOn( D10_PUMP );
 
     // Run D48
     setDialysatePumpTargetRPM( D48_PUMP, SPENT_DIAL_PUMP_INITIAL_RPM, TRUE );
 
-    // After a fluid drain window, go to duration/cond check (which alternates phases)
+    // After a fluid drain window, go to duration/condition check (which alternates phases)
     if ( TRUE == didTimeout( dryBiCartDrainPhaseStartTime, DRY_BICART_DRAIN_FLUID_PHASE_TIME_MS ) )
     {
+        // Open D64 valve (vent/equilibrium)
+        setValveState( D64_VALV, VALVE_STATE_OPEN );
         dryBiCartDrainPhaseStartTime = getMSTimerCount();
         state = DRY_BICART_PRESSURE_EQUILLIBRIUM_STATE;
     }
@@ -677,17 +679,12 @@
 {
     DRY_BICART_DRAIN_EXEC_STATE_T state = DRY_BICART_PRESSURE_EQUILLIBRIUM_STATE;
 
-    // Goal is to have D64 open at the same time as D80/D85
-    setValveState( D80_VALV, VALVE_STATE_OPEN );
-    setValveState( D85_VALV, VALVE_STATE_OPEN );
-
-    // Open D64 valve (vent/equil)
-    setValveState( D64_VALV, VALVE_STATE_OPEN );
-
-    // After vent window, close and go to duration/cond check
+    // After vent window, close and go to duration/condition check
     if ( TRUE == didTimeout( dryBiCartDrainPhaseStartTime, DRY_BICART_DRAIN_VENT_PHASE_TIME_MS ) )
     {
         setValveState( D64_VALV, VALVE_STATE_CLOSED );
+        setValveState( D80_VALV, VALVE_STATE_CLOSED );
+        setValveState( D85_VALV, VALVE_STATE_CLOSED );
         dryBiCartDrainPhaseStartTime = getMSTimerCount();
         state = DRY_BICART_FLUID_DRAIN_DURATION_CHECK_STATE;
     }
@@ -710,35 +707,33 @@
     // Max drain time fallback
     if ( TRUE == didTimeout( dryBiCartDrainStartTime, DRY_BICART_MAX_DRAIN_TIME_MS ) )
     {
-        return DRY_BICART_FLUID_DRAIN_END_STATE;
+        state = DRY_BICART_FLUID_DRAIN_END_STATE;
     }
 
-    // Sample conductivity periodically
-    if ( TRUE == didTimeout( dryBiCartDrainLastCondSampleTime, DRY_BICART_DRAIN_COND_SAMPLE_PERIOD_MS ) )
+    else
     {
-        F32 cond17 = getFilteredConductivity( D17_COND );
-        F32 cond74 = getFilteredConductivity( D74_COND );
+        // Sample conductivity periodically
+        if ( TRUE == didTimeout( dryBiCartDrainLastCondSampleTime, DRY_BICART_DRAIN_COND_SAMPLE_PERIOD_MS ) )
+        {
+            F32 cond17                       = getFilteredConductivity( D17_COND );
+            F32 cond74                       = getFilteredConductivity( D74_COND );
+            dryBiCartDrainLastCondSampleTime = getMSTimerCount();
 
-        dryBiCartDrainLastCondSampleTime = getMSTimerCount();
+            // Debounce "zero conductivity" detection
+            if ( ( cond17 <= DRY_BICART_DRAIN_COND_ZERO_THRESH ) &&
+                    ( cond74 <= DRY_BICART_DRAIN_COND_ZERO_THRESH ) )
+            {
+                if ( dryBiCartDrainCondStableCount < DRY_BICART_DRAIN_COND_STABLE_COUNT_MAX )
+                {
+                    dryBiCartDrainCondStableCount++;
+                }
+            }
 
-        // Debounce "zero conductivity" detection
-        if ( ( cond17 <= DRY_BICART_DRAIN_COND_ZERO_THRESH ) &&
-             ( cond74 <= DRY_BICART_DRAIN_COND_ZERO_THRESH ) )
-        {
-            if ( dryBiCartDrainCondStableCount < DRY_BICART_DRAIN_COND_STABLE_COUNT_MAX )
+            if ( dryBiCartDrainCondStableCount >= DRY_BICART_DRAIN_COND_STABLE_SAMPLES )
             {
-                dryBiCartDrainCondStableCount++;
+                state = DRY_BICART_FLUID_DRAIN_END_STATE;
             }
         }
-        else
-        {
-            dryBiCartDrainCondStableCount = 0;
-        }
-
-        if ( dryBiCartDrainCondStableCount >= DRY_BICART_DRAIN_COND_STABLE_SAMPLES )
-        {
-            return DRY_BICART_FLUID_DRAIN_END_STATE;
-        }
     }
 
     dryBiCartDrainPhaseStartTime = getMSTimerCount();
@@ -760,8 +755,8 @@
     DRY_BICART_DRAIN_EXEC_STATE_T state = DRY_BICART_FLUID_DRAIN_END_STATE;
 
     // Stop pumps
-    requestConcentratePumpOff( D10_PUMP, TRUE );
-    setDialysatePumpTargetRPM( D48_PUMP, 0, TRUE );
+    requestConcentratePumpOff( D10_PUMP, FALSE );
+    signalDialysatePumpHardStop( D48_PUMP );
 
     // Close valves used for drain
     setValveState( D64_VALV, VALVE_STATE_CLOSED );