Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r33fba6f57b9ca5c90f6d887e7a5bab9b2abda12e -r91beb8b83d0fbcb2b879781624169c26a97a7ab4
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 33fba6f57b9ca5c90f6d887e7a5bab9b2abda12e)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 91beb8b83d0fbcb2b879781624169c26a97a7ab4)
@@ -1265,14 +1265,14 @@
 
 /*********************************************************************//**
  * @brief
- * The handleStartStopDGHeatDisinfect function handles a request start or
- * stop DG heat disifect mode.
+ * The handleStartStopDGActiveCoolHeatDisinfect function handles a request start or
+ * stop DG active cool heat disifect mode.
  * @details Inputs: none
  * @details Outputs: message handled
  * @param message: a pointer to the message to handle
  * @return result
  *************************************************************************/
-BOOL handleStartStopDGHeatDisinfect( MESSAGE_T *message )
+BOOL handleStartStopDGActiveCoolHeatDisinfect( MESSAGE_T *message )
 {
     BOOL status = FALSE;
 
@@ -1284,7 +1284,8 @@
 
         if ( TRUE == startingDGHeatDisinfect )
         {
-            status = startDGHeatDisinfect();
+            setActiveOrPassiveHeatDisinfectStatus( FALSE );
+            status = startDGHeatDisinfect( FALSE );
         }
         else
         {
@@ -1968,7 +1969,29 @@
     serializeMessage( msg, COMM_BUFFER_OUT_CAN_DG_2_HD, ACK_REQUIRED );
 }
 
+/*********************************************************************//**
+ * @brief
+ * The handleStartStopDGPassiveHeatDisifnect function handles a request to
+ * start or stop DG passive cool heat disinfect.
+ * @details Inputs: none
+ * @details Outputs: message handled
+ * @param message: a pointer to the message to handle
+ * @return result
+ *************************************************************************/
+void handleStartStopDGPassiveCoolHeatDisifnect( MESSAGE_T* message )
+{
+    BOOL status = FALSE;
 
+    if ( message->hdr.payloadLen == sizeof(U32) )
+    {
+        setActiveOrPassiveHeatDisinfectStatus( TRUE );
+        status = startDGHeatDisinfect( TRUE );
+    }
+
+    sendAckResponseMsg( (MSG_ID_T)message->hdr.msgID, COMM_BUFFER_OUT_CAN_DG_2_HD, status );
+}
+
+
 // ***********************************************************************
 // **************** Message Handling Helper Functions ********************
 // ***********************************************************************