Index: leahi_dialin/td/modules/air_pump.py
===================================================================
diff -u -r7d237e87f2ba125a2d97834031db99d4aca7ac86 -rb246e7473d3ccac5327b9967c1ca2798d0c5452e
--- leahi_dialin/td/modules/air_pump.py	(.../air_pump.py)	(revision 7d237e87f2ba125a2d97834031db99d4aca7ac86)
+++ leahi_dialin/td/modules/air_pump.py	(.../air_pump.py)	(revision b246e7473d3ccac5327b9967c1ca2798d0c5452e)
@@ -23,7 +23,7 @@
 from leahi_dialin.common.td_defs import td_enum_repository
 from leahi_dialin.protocols.CAN import DenaliChannels
 from leahi_dialin.utils.base import AbstractSubSystem, publish
-from leahi_dialin.utils.conversions import integer_to_bytearray
+from leahi_dialin.utils.conversions import integer_to_bytearray, float_to_bytearray
 
 MAX_AIR_PUMP_POWER_LEVEL = 255  #Maximum air pump power allowed
 
@@ -69,7 +69,7 @@
         """
         sensor_list =[]
         sensor_list.append((td_enum_repository.TDAirPumpAttributes.STATE.name, 'i'))
-        sensor_list.append((td_enum_repository.TDAirPumpAttributes.DUTY_CYCLE.name, 'i'))
+        sensor_list.append((td_enum_repository.TDAirPumpAttributes.DUTY_CYCLE.name, 'f'))
         sensor_list.append((td_enum_repository.TDAirPumpAttributes.RPM.name, 'i'))
         
         i = 1
@@ -122,7 +122,7 @@
         payload = sts + pwr
 
         state_name = 'start with power' if state == 2 else 'stopped'
-        power_value = f'{str(power)}' if state == 2 else ''
+        power_value = f'{str(dutyCycle)}' if state == 2 else ''
         return cmd_generic_override(
             payload = payload,
             reset = NO_RESET,