Index: leahi_dialin/dd/modules/gen_dialysate.py
===================================================================
diff -u -r351b713da824c7d6d7f73d0b33ddf1fd53621f1a -ra01dcb7ce7e9f929e5e5f41414ace01ce69ad051
--- leahi_dialin/dd/modules/gen_dialysate.py	(.../gen_dialysate.py)	(revision 351b713da824c7d6d7f73d0b33ddf1fd53621f1a)
+++ leahi_dialin/dd/modules/gen_dialysate.py	(.../gen_dialysate.py)	(revision a01dcb7ce7e9f929e5e5f41414ace01ce69ad051)
@@ -197,4 +197,39 @@
             return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
         else:
             self.logger.error("Timeout!!!!")
+            return False
+
+    def cmd_hydraulics_chamber_fluid_temperature_override(self, temperature: float, reset: int = NO_RESET) -> int:
+        """
+        Constructs and sends the hydraulic fluid temperature override command
+
+        @param temperature:  float - value to override in fluid temperature.
+        @param reset:  integer - 1 to reset a previous override, 0 to override
+        @return: 1 if successful, zero otherwise
+
+        """
+
+        reset_byte_array = integer_to_bytearray(reset)
+        tmp = float_to_bytearray(temperature)
+        payload = reset_byte_array + tmp
+
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_dd_ch_id,
+                                              message_id=MsgIds.MSG_ID_DD_HYD_CHAMBER_TARGET_TEMP_OVERRIDE_REQUEST.value,
+                                              payload=payload)
+
+        if reset == RESET:
+            str_res = "reset back to normal"
+        else:
+            str_res = str(temperature)
+        self.logger.debug("override hydraulic fluid temperature to " + ": " + str_res)
+
+        # Send message
+        received_message = self.can_interface.send(message)
+
+        # If there is content...
+        if received_message is not None:
+            # response payload is OK or not OK
+            return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
+        else:
+            self.logger.error("Timeout!!!!")
             return False
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