Index: leahi_dialin/dd/modules/heaters.py
===================================================================
diff -u -reff35c7c93f5a6f24510f54bcaa7e32011ecd92e -r0114616a15c2e55ffbd4c6bb4535dd8dbb92880b
--- leahi_dialin/dd/modules/heaters.py	(.../heaters.py)	(revision eff35c7c93f5a6f24510f54bcaa7e32011ecd92e)
+++ leahi_dialin/dd/modules/heaters.py	(.../heaters.py)	(revision 0114616a15c2e55ffbd4c6bb4535dd8dbb92880b)
@@ -67,8 +67,8 @@
         self.can_interface = can_interface
         self.logger = logger
 
-        self.main_primary_heater_duty_cycle = 0
-        self.trimmer_heater_duty_cycle = 0
+        self.main_primary_heater_duty_cycle = 0.0
+        self.trimmer_heater_duty_cycle = 0.0
         self.primary_heaters_target_temperature = 0.0
         self.trimmer_heater_target_temperature = 0.0
         self.primary_heater_state = 0
@@ -192,7 +192,7 @@
         htr = integer_to_bytearray(heater)
         cmd = integer_to_bytearray(command)
         tmp = float_to_bytearray(temperature)
-        payload = tmp + cmd + htr
+        payload = htr + cmd + tmp
 
         message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_dd_ch_id,
                                               message_id=MsgIds.MSG_ID_DD_HEATERS_START_STOP_OVERRIDE_REQUEST.value,