Index: firmware/App/Modes/ModeInitPOST.c
===================================================================
diff -u -r736cc5b56cc9c784ab1d8fc8687a73d190c35759 -r0ca939ac0e3ad7d432152a89135075bfd67246df
--- firmware/App/Modes/ModeInitPOST.c	(.../ModeInitPOST.c)	(revision 736cc5b56cc9c784ab1d8fc8687a73d190c35759)
+++ firmware/App/Modes/ModeInitPOST.c	(.../ModeInitPOST.c)	(revision 0ca939ac0e3ad7d432152a89135075bfd67246df)
@@ -42,13 +42,14 @@
 #include "SystemCommMessages.h"
 #include "TaskGeneral.h"
 #include "Temperatures.h"
+#include "Timers.h"
 #include "Valves.h"
 #include "WatchdogMgmt.h"
 
-    /**
-     *  @addtogroup HDInitAndPOSTMode
-     *  @{
-     */
+/**
+ *  @addtogroup HDInitAndPOSTMode
+ *  @{
+ */
 
 // ********** private definitions **********
 
@@ -60,6 +61,8 @@
 /// Maximum wait time for UI to send its final POST result.
 #define POST_UI_MAX_WAIT_TIME       ( 2 * MS_PER_SECOND / TASK_GENERAL_INTERVAL )
 
+#define SN_INST_SEND_TO_UI_TIME_INTERVAL_MS    500              ///< Serial Number and institutional record send time interval in milliseconds.
+
 // ********** private data **********
 
 static HD_POST_STATE_T postState;                               ///< Current state of initialize and POST mode.
@@ -77,6 +80,7 @@
 static UI_VERSIONS_T uiVersion = { 0, 0, 0, 0, 0 };             ///< Version and compatibility information reported by UI.
 static DG_VERSIONS_T dgVersion = { 0, 0, 0, 0, 0, 0, 0, 0, 0 }; ///< Version and compatibility information reported by DG.
 static U32 startPOSTDelayCounter = 0;                           ///< Start POST delay counter.
+static U32 SNAndInstConfigSendStartTimeMS;                      ///< serial number and institutional configuration send start time milliseconds.
 
 extern U32 savedResetReasonCode;                                ///< Saved reset reason code from sys_startup.c.
 
@@ -87,6 +91,8 @@
 static SELF_TEST_STATUS_T execFWCompatibilityTest( void );
 static SELF_TEST_STATUS_T execUITest( void );
 
+static void sendSerialNumberAndInstitutionalToUI( void );
+
 /*********************************************************************//**
  * @brief
  * The initInitAndPOSTMode function initializes the Initialize & POST Mode module.
@@ -96,17 +102,18 @@
  *************************************************************************/
 void initInitAndPOSTMode( void )
 {
-    postState                 = POST_STATE_START;
-    postCompleted             = FALSE;
-    postPassed                = FALSE;
-    tempPOSTPassed            = TRUE;
-    uiPOSTPassed              = FALSE;
-    dgPOSTPassed              = FALSE;
-    uiPOSTResultReceived      = FALSE;
-    dgPOSTResultReceived      = FALSE;
-    waitForUIPostTimerCtr     = 0;
-    postCompleteDelayTimerCtr = 0;
-    startPOSTDelayCounter     = 0;
+    postState                      = POST_STATE_START;
+    postCompleted                  = FALSE;
+    postPassed                     = FALSE;
+    tempPOSTPassed                 = TRUE;
+    uiPOSTPassed                   = FALSE;
+    dgPOSTPassed                   = FALSE;
+    uiPOSTResultReceived           = FALSE;
+    dgPOSTResultReceived           = FALSE;
+    waitForUIPostTimerCtr          = 0;
+    postCompleteDelayTimerCtr      = 0;
+    startPOSTDelayCounter          = 0;
+    SNAndInstConfigSendStartTimeMS = getMSTimerCount();
 }
 
 /*********************************************************************//**
@@ -157,6 +164,8 @@
         // Ignore stop button in this mode.
     }
 
+    sendSerialNumberAndInstitutionalToUI();
+
     // Execute current POST state     *Note - these switch cases must be in same order as enum HD_POST_States
     switch ( postState )
     {
@@ -609,4 +618,29 @@
     return result;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The sendSerialNumberAndInstitutionalToUI function sends the serial number
+ * and institutional records to the UI unsolicited.
+ * @details Inputs: SNAndInstConfigSendStartTimeMS, postState
+ * @details Outputs: SNAndInstConfigSendStartTimeMS
+ * @return none
+ *************************************************************************/
+static void sendSerialNumberAndInstitutionalToUI( void )
+{
+    if ( ( TRUE == didTimeout( SNAndInstConfigSendStartTimeMS, SN_INST_SEND_TO_UI_TIME_INTERVAL_MS ) ) && ( postState > POST_STATE_NVDATAMGMT ) )
+    {
+        MESSAGE_T message;
+
+        // Create a message object with the payload length to be 0 for the institutional message
+        message.hdr.msgID      = 0;
+        message.hdr.payloadLen = 0;
+
+        handleHDSerialNumberRequest();
+        handleSendInstitutionalRecordToUI( &message );
+
+        SNAndInstConfigSendStartTimeMS = getMSTimerCount();
+    }
+}
+
 /**@}*/
Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -rca8a4a4cf6d2c59d9296c3abdf314765550a2624 -r0ca939ac0e3ad7d432152a89135075bfd67246df
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision ca8a4a4cf6d2c59d9296c3abdf314765550a2624)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 0ca939ac0e3ad7d432152a89135075bfd67246df)
@@ -3354,23 +3354,28 @@
     blankMessage( &msg );
     msg.hdr.msgID = MSG_ID_HD_SERIAL_NUMBER_RESPONSE;
 
-    // Add 1 byte for null terminator
-    msg.hdr.payloadLen = MAX_TOP_LEVEL_SN_CHARS + 1;
-
-    for ( i = 0; i < MAX_TOP_LEVEL_SN_CHARS; i++ )
+    // Check if the first element of the serial number is not 0 meaning that we are not sending empty serial number
+    // to the UI
+    if ( system.topLevelSN[0] != 0 )
     {
-        // NOTE: A local variable was created to avoid system.topLevelSN in the messages list
-        // NOTE: For loop was used instead of memory copy to ensure it is not parsed in the messages list script
-        localTopLevelSN.topLevelSN[ i ] = system.topLevelSN[ i ];
-    }
+        // Add 1 byte for null terminator
+        msg.hdr.payloadLen = MAX_TOP_LEVEL_SN_CHARS + 1;
 
-    // Fill message payload
-    memcpy( payloadPtr, &localTopLevelSN, sizeof( LOCAL_TOP_SN_T ) );
-    payloadPtr += MAX_TOP_LEVEL_SN_CHARS;
-    *payloadPtr = 0;
+        for ( i = 0; i < MAX_TOP_LEVEL_SN_CHARS; i++ )
+        {
+            // NOTE: A local variable was created to avoid system.topLevelSN in the messages list
+            // NOTE: For loop was used instead of memory copy to ensure it is not parsed in the messages list script
+            localTopLevelSN.topLevelSN[ i ] = system.topLevelSN[ i ];
+        }
 
-    // Serialize the message (w/ sync, CRC, and appropriate CAN padding) and add serialized message data to appropriate comm buffer
-    serializeMessage( msg, COMM_BUFFER_OUT_CAN_HD_2_UI, ACK_REQUIRED );
+        // Fill message payload
+        memcpy( payloadPtr, &localTopLevelSN, sizeof( LOCAL_TOP_SN_T ) );
+        payloadPtr += MAX_TOP_LEVEL_SN_CHARS;
+        *payloadPtr = 0;
+
+        // Serialize the message (w/ sync, CRC, and appropriate CAN padding) and add serialized message data to appropriate comm buffer
+        serializeMessage( msg, COMM_BUFFER_OUT_CAN_HD_2_UI, ACK_REQUIRED );
+    }
 }
 
 /*********************************************************************//**