Index: AlarmDefs.h
===================================================================
diff -u -rb0fd0c547e24177bc326bc8dbd7c3dc94b3a5cf6 -r6e98f4ef15d782d3353cce39580ad7f371d30edf
--- AlarmDefs.h	(.../AlarmDefs.h)	(revision b0fd0c547e24177bc326bc8dbd7c3dc94b3a5cf6)
+++ AlarmDefs.h	(.../AlarmDefs.h)	(revision 6e98f4ef15d782d3353cce39580ad7f371d30edf)
@@ -298,7 +298,7 @@
     ALARM_ID_FW_RESERVED_266                                        = 266,  ///< FW reserved for use
     ALARM_ID_FW_RESERVED_267                                        = 267,  ///< FW reserved for use
     ALARM_ID_FW_RESERVED_268                                        = 268,  ///< FW reserved for use
-    ALARM_ID_FW_RESERVED_269                                        = 269,  ///< FW reserved for use
+    ALARM_ID_FW_RESERVED_269                                     = 269,  ///< TD processor is in Disinfect Flush mode
     ALARM_ID_FW_RESERVED_270                                        = 270,  ///< FW reserved for use
     ALARM_ID_FW_RESERVED_271                                        = 271,  ///< FW reserved for use
     ALARM_ID_FW_RESERVED_272                                        = 272,  ///< FW reserved for use
Index: DDDefs.h
===================================================================
diff -u -r663119c8dd4c7a7ef8bee2f301310db5e48493f6 -r6e98f4ef15d782d3353cce39580ad7f371d30edf
--- DDDefs.h	(.../DDDefs.h)	(revision 663119c8dd4c7a7ef8bee2f301310db5e48493f6)
+++ DDDefs.h	(.../DDDefs.h)	(revision 6e98f4ef15d782d3353cce39580ad7f371d30edf)
@@ -40,6 +40,7 @@
     DD_MODE_ROPS,                       ///< RO permeate sample mode
     DD_MODE_UPDT,                       ///< Update mode
     DD_MODE_NLEG,                       ///< Not legal - an illegal mode transition occurred
+    DD_MODE_FLUS,                       ///< Flush mode
     NUM_OF_DD_MODES                     ///< Number of DD operation modes
 };
 typedef enum DD_Op_Modes DD_OP_MODE_T;  ///< Type for DD operation modes enumeration
@@ -294,6 +295,8 @@
 enum DD_Command
 {
     DD_CMD_NONE = 0,                           ///< Not a command
+    DD_CMD_START_FLUSH,                            ///< Command to request DD to start flush
+    DD_CMD_START_HEAT_DISINFECT_ACTIVE_COOL,       ///< Command to request DD to start heat disinfect with active cool
     NUM_OF_DD_COMMANDS                         ///< Number of DD commands
 };
 typedef enum DD_Command DD_COMMAND_T;          ///< Type for DD commands enumeration
Index: MsgDefs.h
===================================================================
diff -u -r4497e2cca0a0befc8b6611fc06a9f5640f2bdc9f -r6e98f4ef15d782d3353cce39580ad7f371d30edf
--- MsgDefs.h	(.../MsgDefs.h)	(revision 4497e2cca0a0befc8b6611fc06a9f5640f2bdc9f)
+++ MsgDefs.h	(.../MsgDefs.h)	(revision 6e98f4ef15d782d3353cce39580ad7f371d30edf)
@@ -269,6 +269,8 @@
     MSG_ID_TD_DD_FLUSH_REQUEST = 0x12B,
     MSG_ID_TD_DD_HEAT_DISINFECT_REQUEST = 0x12C,
     MSG_ID_TD_DD_HEAT_DISINFECT_ACTIVE_COOL_REQUEST = 0x12D,
+    MSG_ID_UI_DISINFECT_REQUEST = 0x7F,                                             ///< UI disinfection selection
+    MSG_ID_TD_DISINFECT_RESPONSE = 0x80,                                ///< HD response to disinfection selection
 
     // service/test CAN messages
     MSG_ID_FIRST_TD_TESTER_MESSAGE = 0x8000,                                        ///< First TD test message ID