Index: leahi_dialin/dd/modules/drybicart.py
===================================================================
diff -u -rb00b17d2ee5eb163b2152ef9d3f0c1db8551a284 -r4fc29aead7deff5ba3ddb4c9e1290fc0d5b2b6e8
--- leahi_dialin/dd/modules/drybicart.py	(.../drybicart.py)	(revision b00b17d2ee5eb163b2152ef9d3f0c1db8551a284)
+++ leahi_dialin/dd/modules/drybicart.py	(.../drybicart.py)	(revision 4fc29aead7deff5ba3ddb4c9e1290fc0d5b2b6e8)
@@ -240,3 +240,26 @@
             override_text=str(small_large),
             logger=self.logger,
             can_interface=self.can_interface)
+
+    def cmd_dry_bicart_depressurise_override(self, depressurise: int, reset: int = NO_RESET) -> int:
+        """
+        Constructs and sends the dry bicart depressurise override command
+        Constraints:
+            Must be logged into DD.
+
+        @param depressurise:  int - value for depressurise ( depressurise = 1
+        @return: 1 if successful, zero otherwise
+        """
+        depressurise = integer_to_bytearray(depressurise)
+        reset_byte_array = integer_to_bytearray(reset)
+        payload = reset_byte_array + depressurise
+
+        return cmd_generic_override(
+            payload=payload,
+            reset=reset,
+            channel_id=CanChannels.dialin_to_dd_ch_id,
+            msg_id=MsgIds.MSG_ID_DD_BICART_DEPRESSURISE_REQUEST_OVERRIDE_REQUEST,
+            entity_name='Bicart Depressurise',
+            override_text=str(depressurise),
+            logger=self.logger,
+            can_interface=self.can_interface)