Index: firmware/App/Modes/ModeChemicalDisinfect.c
===================================================================
diff -u -r939e488d71ae8511cba65e4a27e31660259e06ac -r135b257c835e406f036dfbdec1d8cd9c51e1c526
--- firmware/App/Modes/ModeChemicalDisinfect.c	(.../ModeChemicalDisinfect.c)	(revision 939e488d71ae8511cba65e4a27e31660259e06ac)
+++ firmware/App/Modes/ModeChemicalDisinfect.c	(.../ModeChemicalDisinfect.c)	(revision 135b257c835e406f036dfbdec1d8cd9c51e1c526)
@@ -8,7 +8,7 @@
 * @file    ModeChemicalDisinfect.c
 *
 * @author  (last)      Dara Navaei
-* @date    (last)      18-Jan-2023
+* @date    (last)      27-Feb-2023
 *
 * @author  (original)  Sean
 * @date    (original)  04-Apr-2020
@@ -249,7 +249,7 @@
 
     chemDisinfectState                         = DG_CHEM_DISINFECT_STATE_START;
     prevChemDisinfectState                     = DG_CHEM_DISINFECT_STATE_START;
-    stateTimer                                 = 0;
+    stateTimer                                 = getMSTimerCount();
     isThisLastDrain                            = FALSE;
     stateTrialCounter                          = 0;
     rsrvr1Status                               = NUM_OF_DG_RESERVOIR_STATUS;
@@ -273,7 +273,6 @@
     alarmDetectedPendingTrigger                = ALARM_ID_NO_ALARM;
     flushCircWaitTime                          = 0;
     flushDisinfectantWaitTime                  = 0;
-    primeAcidSteadyStateCounter                = 0;
     rsrvrFillStableTimeCounter                 = 0;
     rsrvrFillToFullStableTimeCounter           = 0;
     R1FullVolume                               = 0.0F;
@@ -286,6 +285,8 @@
 
     initPersistentAlarm( ALARM_ID_DG_CHEM_DISINFECT_TARGET_TEMP_OUT_OF_RANGE, DISINFECT_TEMP_OUT_OF_RANGE_TIMEOUT_MS, DISINFECT_TEMP_OUT_OF_RANGE_TIMEOUT_MS );
     initPersistentAlarm( ALARM_ID_DG_CHEM_DISINFECT_TARGET_COND_OUT_OF_RANGE, DISINFECT_COND_OUT_OF_RANGE_TIMEOUT_MS, DISINFECT_COND_OUT_OF_RANGE_TIMEOUT_MS );
+
+    requestConcentratePumpOff( CONCENTRATEPUMPS_CP1_ACID, PARK_CONC_PUMPS );
 }
 
 /*********************************************************************//**
@@ -306,7 +307,7 @@
     setCPLDCleanLEDColor( CPLD_CLEAN_LED_YELLOW );
 
 #ifndef _RELEASE_
-    if ( nelsonSupport != NELSON_POS_CONTROL_CHEM_DISINFECT )
+    if ( nelsonSupport != NELSON_CHEM_DISINFECT )
 #endif
     {
         activateAlarmNoData( ALARM_ID_DG_CHEM_DISINFECT_INSERT_ACID );
@@ -576,14 +577,8 @@
             setValveState( VRD2, VALVE_STATE_CLOSED );
             setValveState( VPI, VALVE_STATE_OPEN );
             setValveState( VPO, VALVE_STATE_NOFILL_C_TO_NO );
+            turnOnUVReactor( INLET_UV_REACTOR );
 
-#ifndef _RELEASE_
-            if ( nelsonSupport != NELSON_POS_CONTROL_CHEM_DISINFECT )
-#endif
-            {
-                turnOnUVReactor( INLET_UV_REACTOR );
-            }
-
             stateTrialCounter = 0;
             stateTimer        = getMSTimerCount();
             state             = DG_CHEM_DISINFECT_STATE_FLUSH_DRAIN;
@@ -621,18 +616,12 @@
         // set pumps and valves for next state, flush circulation
         setValveState( VPD, VALVE_STATE_OPEN_C_TO_NC );
         setROPumpTargetFlowRateLPM( RO_PUMP_TARGET_FLUSH_FLOW_RATE_LPM, MAX_RO_PUMP_FLUSH_FILL_PRESSURE_PSI );
+        // Start heating the water while we are flushing
+        setHeaterTargetTemperature( DG_PRIMARY_HEATER, CHEM_DISINFECT_HEATER_CONTROL_TEMPERATURE_C );
+        startHeater( DG_PRIMARY_HEATER );
+        // The UV reactors will be on for the entire disinfect cycle
+        turnOnUVReactor( OUTLET_UV_REACTOR );
 
-#ifndef _RELEASE_
-        if ( nelsonSupport != NELSON_POS_CONTROL_CHEM_DISINFECT )
-#endif
-        {
-            // Start heating the water while we are flushing
-            setHeaterTargetTemperature( DG_PRIMARY_HEATER, CHEM_DISINFECT_HEATER_CONTROL_TEMPERATURE_C );
-            startHeater( DG_PRIMARY_HEATER );
-            // The UV reactors will be on for the entire disinfect cycle
-            turnOnUVReactor( OUTLET_UV_REACTOR );
-        }
-
         flushCircWaitTime = FLUSH_CICRCULATION_INITIAL_WAIT_TIME_MS;
         stateTimer        = getMSTimerCount();
         state             = DG_CHEM_DISINFECT_STATE_FLUSH_CIRCULATION;
@@ -696,7 +685,7 @@
         }
 
         // Check if any of the temperature sensors are out of tolerance
-        if( ( TRUE == isTPoOut ) || ( TRUE == isTD2Out ) || ( TRUE == isCD2Out ) || ( TRUE == isCPoOut) )
+        if( ( TRUE == isTPoOut ) || ( TRUE == isTD2Out ) || ( TRUE == isCD2Out ) || ( TRUE == isCPoOut ) )
         {
             // Check if we have exceeded the number of trials. If not, try another time
             ++stateTrialCounter;
@@ -762,7 +751,7 @@
 
 #ifndef _RELEASE_
     if ( ( getSoftwareConfigStatus( SW_CONFIG_DISABLE_DISINFECT_CONDUCTIVITY_CHECK ) != SW_CONFIG_ENABLE_VALUE ) &&
-         ( ( nelsonSupport != NELSON_POS_CONTROL_CHEM_DISINFECT ) || ( nelsonSupport != NELSON_CHEM_DISINFECT ) ) )
+         ( nelsonSupport != NELSON_CHEM_DISINFECT ) )
 #endif
     {
         if ( cd2Conductivity < MIN_PRIME_ACID_CONDUCTIVITY_US_PER_CM )
@@ -1099,7 +1088,7 @@
             state                = DG_CHEM_DISINFECT_STATE_DRAIN_R1;
 
 #ifndef _RELEASE_
-            if ( ( NELSON_POS_CONTROL_CHEM_DISINFECT == nelsonSupport ) || ( NELSON_CHEM_DISINFECT == nelsonSupport ) )
+            if ( NELSON_CHEM_DISINFECT == nelsonSupport )
             {
                 deenergizeActuators( NO_PARK_CONC_PUMPS );
                 state = DG_CHEM_DISINFECT_STATE_COMPLETE;
@@ -1784,9 +1773,7 @@
 {
     switch ( nelsonSupport )
     {
-        case NELSON_POS_CONTROL_CHEM_DISINFECT:
         case NELSON_CHEM_DISINFECT:
-
             // Set the valves to start flush circulation
             setValveState( VPI, VALVE_STATE_OPEN );
             setValveState( VBF, VALVE_STATE_CLOSED );
@@ -1800,17 +1787,11 @@
             setValveState( VRD1, VALVE_STATE_CLOSED );
             setValveState( VRD2, VALVE_STATE_CLOSED );
             setROPumpTargetFlowRateLPM( RO_PUMP_TARGET_FLUSH_FLOW_RATE_LPM, MAX_RO_PUMP_FLUSH_FILL_PRESSURE_PSI );
+            setHeaterTargetTemperature( DG_PRIMARY_HEATER, CHEM_DISINFECT_HEATER_CONTROL_TEMPERATURE_C );
+            startHeater( DG_PRIMARY_HEATER );
+            turnOnUVReactor( INLET_UV_REACTOR );
+            turnOnUVReactor( OUTLET_UV_REACTOR );
 
-#ifndef _RELEASE_
-            if ( NELSON_CHEM_DISINFECT == nelsonSupport )
-#endif
-            {
-                setHeaterTargetTemperature( DG_PRIMARY_HEATER, CHEM_DISINFECT_HEATER_CONTROL_TEMPERATURE_C );
-                startHeater( DG_PRIMARY_HEATER );
-                turnOnUVReactor( INLET_UV_REACTOR );
-                turnOnUVReactor( OUTLET_UV_REACTOR );
-            }
-
             flushCircWaitTime  = FLUSH_CICRCULATION_INITIAL_WAIT_TIME_MS;
             stateTimer         = getMSTimerCount();
             chemDisinfectState = DG_CHEM_DISINFECT_STATE_FLUSH_CIRCULATION;