Setting changes

My ITC308, How do change the settings from cool to heat.
Whe the temp reaches below 32f I want the heater to turn on. 40f turn off

Please set TS=40, HD=8
The principle of the ITC-308 is, when the temperature reaches/ lower than TS (temperature setting value) - HD (heating difference value), it will turn on the heater, turn off at TS.