Index: firmware/App/Modes/ModeStandby.c
===================================================================
diff -u -ra3aaf56627ea716af49eb647cb1d83930a891669 -re0f0e562f964f53ac9b9bd62ff2092c0b12e202b
--- firmware/App/Modes/ModeStandby.c	(.../ModeStandby.c)	(revision a3aaf56627ea716af49eb647cb1d83930a891669)
+++ firmware/App/Modes/ModeStandby.c	(.../ModeStandby.c)	(revision e0f0e562f964f53ac9b9bd62ff2092c0b12e202b)
@@ -1,14 +1,14 @@
 /**************************************************************************
 *
-* Copyright (c) 2019-2023 Diality Inc. - All Rights Reserved.
+* Copyright (c) 2019-2024 Diality Inc. - All Rights Reserved.
 *
 * THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
 * WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
 *
 * @file    ModeStandby.c
 *
 * @author  (last)      Dara Navaei
-* @date    (last)      10-Nov-2023
+* @date    (last)      28-Oct-2024
 *
 * @author  (original)  Dara Navaei
 * @date    (original)  05-Nov-2019
@@ -23,6 +23,7 @@
 #include "MessageSupport.h"
 #include "ModeChemicalDisinfect.h"
 #include "ModeFault.h"
+#include "ModeFill.h"
 #include "ModeHeatDisinfect.h"
 #include "ModeStandby.h"
 #include "NVDataMgmt.h"
@@ -263,6 +264,9 @@
     {
         pendingStartDGRequest = FALSE;
         signalSyncToHD();
+        // About to start a treatment reset the chemical bottles volumes (regardless whether the user has inserted new bottles)
+        resetChemicalUsedVolumeML( BICARB );
+        resetChemicalUsedVolumeML( ACID );
         requestNewOperationMode( DG_MODE_GENE );
     }
     else if ( TRUE == pendingStartDGFlushRequest )
@@ -589,9 +593,11 @@
  * The startDGHeatDisinfect function starts heat disinfect mode.
  * @details Inputs: standbyState
  * @details Outputs: none
+ * @param isPassive: boolean flag to indicate whether this is passive cool heat
+ * or active cool heat disinfect
  * @return: TRUE if the switch was successful
  *************************************************************************/
-BOOL startDGHeatDisinfect( void )
+BOOL startDGHeatDisinfect( BOOL isPassive )
 {
     BOOL status = FALSE;
 
@@ -605,7 +611,7 @@
 
         getNVRecord2Driver( GET_USAGE_RECORD, (U08*)&usageInfo, sizeof( DG_USAGE_INFO_RECORD_T ), 0, ALARM_ID_NO_ALARM );
 
-        cmdResponse.commandID  = DG_CMD_START_HEAT_DISINFECT;
+        cmdResponse.commandID  = ( FALSE == isPassive ? DG_CMD_START_HEAT_DISINFECT_ACTIVE_COOL : DG_CMD_START_HEAT_DISINFECT_PASSIVE_COOL );
         cmdResponse.rejected   = FALSE;
         cmdResponse.rejectCode = DG_CMD_REQUEST_REJECT_REASON_NONE;
 
@@ -666,7 +672,7 @@
 
         getNVRecord2Driver( GET_USAGE_RECORD, (U08*)&usageInfo, sizeof( DG_USAGE_INFO_RECORD_T ), 0, ALARM_ID_NO_ALARM );
 
-        cmdResponse.commandID  = DG_CMD_START_HEAT_DISINFECT;
+        cmdResponse.commandID  = DG_CMD_START_ACTIVE_COOL;
         cmdResponse.rejected   = FALSE;
         cmdResponse.rejectCode = DG_CMD_REQUEST_REJECT_REASON_NONE;