Index: dialin/hd/fans.py
===================================================================
diff -u -rb956f5ac0f308216ec903078e681eea8f7b6c677 -r4180ef16e74251c6eb83501a396aaa9a0a892b6b
--- dialin/hd/fans.py	(.../fans.py)	(revision b956f5ac0f308216ec903078e681eea8f7b6c677)
+++ dialin/hd/fans.py	(.../fans.py)	(revision 4180ef16e74251c6eb83501a396aaa9a0a892b6b)
@@ -168,7 +168,7 @@
         # Send message
         received_message = self.can_interface.send(message)
 
-        # If there is no content...
+        # If there is content...
         if received_message is not None:
 
             self.logger.debug("RPM alarm start time offset set to: " +
Index: dialin/hd/hemodialysis_device.py
===================================================================
diff -u -reee8d5cd603ee99c3bc823d014aaaa2069ce524c -r4180ef16e74251c6eb83501a396aaa9a0a892b6b
--- dialin/hd/hemodialysis_device.py	(.../hemodialysis_device.py)	(revision eee8d5cd603ee99c3bc823d014aaaa2069ce524c)
+++ dialin/hd/hemodialysis_device.py	(.../hemodialysis_device.py)	(revision 4180ef16e74251c6eb83501a396aaa9a0a892b6b)
@@ -52,14 +52,18 @@
 from ..protocols.CAN import DenaliMessage, DenaliCanMessenger, DenaliChannels
 from ..utils.base import AbstractSubSystem, publish, LogManager
 from ..utils.checks import check_broadcast_interval_override_ms
-from ..utils.conversions import integer_to_bytearray, unsigned_short_to_bytearray
+from ..utils.conversions import integer_to_bytearray, unsigned_short_to_bytearray, bytearray_to_integer, \
+                                bytearray_to_byte
 
 
 class HD(AbstractSubSystem):
     """
     Hemodialysis Device (HD) Dialin object API.
     It provides the basic interface to communicate with the HD firmware.
     """
+    # HD debug event max count
+    _HD_DEBUG_EVENT_LIST_COUNT = 10
+    _HD_DEBUG_EVENT_MSG_LEN_INDEX = 5
 
     # HD login password
     HD_LOGIN_PASSWORD = '123'
@@ -107,6 +111,10 @@
             self.can_interface.register_receiving_publication_function(channel_id, msg_id,
                                                                        self._handler_hd_op_mode_sync)
 
+            self.can_interface.register_receiving_publication_function(channel_id,
+                                                                       MsgIds.MSG_ID_HD_DEBUG_EVENT.value,
+                                                                       self._handler_hd_debug_event_sync)
+
             self.can_interface.register_receiving_publication_function(DenaliChannels.ui_to_hd_ch_id,
                                                                        MsgIds.MSG_ID_HD_UI_VERSION_INFO_RESPONSE.value,
                                                                        self._handler_ui_version_response_sync)
@@ -116,10 +124,11 @@
         self.hd_operation_sub_mode = 0
         self.hd_logged_in = False
         self.hd_set_logged_in_status(False)
-        self.hd_no_transmit_msg_list = [0,0,0,0,0,0,0,0]
+        self.hd_no_transmit_msg_list = [0, 0, 0, 0, 0, 0, 0, 0]
         self.ui_version = None
+        self.hd_debug_events = [''] * self._HD_DEBUG_EVENT_LIST_COUNT
+        self._hd_debug_event_index = 0
 
-
         # Create command groups
         self.accel = HDAccelerometer(self.can_interface, self.logger)
         self.air_bubbles = HDAirBubbles(self.can_interface, self.logger)
@@ -189,6 +198,28 @@
         """
         return self.ui_version
 
+    @publish(["hd_debug_events"])
+    def _handler_hd_debug_event_sync(self, message):
+
+        payload = message['message']
+        message_length = payload[self._HD_DEBUG_EVENT_MSG_LEN_INDEX]
+        temp_message = ''
+
+        index = MsgFieldPositions.START_POS_FIELD_1
+
+        for i in range(0, message_length):
+            # Loop through the length and get the
+            char, char_index = bytearray_to_byte(payload, index + i, False)
+            temp_message += chr(char)
+
+        self._hd_debug_event_index = 0 if self._hd_debug_event_index == self._HD_DEBUG_EVENT_LIST_COUNT - 1 else \
+                                          self._hd_debug_event_index
+
+        self.hd_debug_events.insert(self._hd_debug_event_index, temp_message)
+
+        # Print the latest received message from the debug event to the console
+        #print(temp_message)
+
     @publish(["hd_logged_in"])
     def hd_set_logged_in_status(self, logged_in: bool = False):
         """
Index: tests/dg_tests.py
===================================================================
diff -u -r41ce85a8c857a07df740da0e83b28a63bc150e15 -r4180ef16e74251c6eb83501a396aaa9a0a892b6b
--- tests/dg_tests.py	(.../dg_tests.py)	(revision 41ce85a8c857a07df740da0e83b28a63bc150e15)
+++ tests/dg_tests.py	(.../dg_tests.py)	(revision 4180ef16e74251c6eb83501a396aaa9a0a892b6b)
@@ -40,6 +40,7 @@
 from dialin.dg.pressures import DGPressures
 from dialin.dg.conductivity_sensors import ConductivitySensorsEnum
 from dialin.dg.voltages import DGMonitoredVoltages
+from dialin.hd.valves import HDValves
 from time import sleep
 from datetime import datetime
 import sys
@@ -637,7 +638,8 @@
 
     # test_dg_fans_alarms()
     while True:
-        print(get_hd_fans_info())
+    #    print(get_hd_fans_info())
+        print(hd.hd_debug_events)
         sleep(1)
 
     #dg.ro_pump.cmd_ro_pump_measured_flow_rate_override(0.0, reset=1)
Index: tests/hd_nvm_scripts.py
===================================================================
diff -u -r41ce85a8c857a07df740da0e83b28a63bc150e15 -r4180ef16e74251c6eb83501a396aaa9a0a892b6b
--- tests/hd_nvm_scripts.py	(.../hd_nvm_scripts.py)	(revision 41ce85a8c857a07df740da0e83b28a63bc150e15)
+++ tests/hd_nvm_scripts.py	(.../hd_nvm_scripts.py)	(revision 4180ef16e74251c6eb83501a396aaa9a0a892b6b)
@@ -54,10 +54,10 @@
     # Use cmd_set_hd_calibration_excel_to_fw() set the changes back to firmware
     # This function requires an address for the excel report. Use the absolute address of your excel report like the
     # example below
-    #hd.calibration_record.cmd_set_hd_calibration_excel_to_fw('/home/fw/projects/HD_NV_Records/2022-02-21-HD-Record.xlsx')
+    hd.calibration_record.cmd_set_hd_calibration_excel_to_fw('/home/fw/projects/HD_NV_Records/2022-05-17-HD-Record.xlsx')
 
     # For resetting the calibration record to benign values, use the function below
-    hd.calibration_record.cmd_reset_hd_calibration_record()
+    #hd.calibration_record.cmd_reset_hd_calibration_record()
 
 
 if __name__ == "__main__":