Honeywell International Inc. THX9001R01 Manuale Utente

The thermostat reads the indoor humidity level and allows the user to set a
dehumidification setting. 
Dehumidification using the cooling system has the following methods of
dehumidification control (ISU 9080):
Basic: This option uses the cooling system to reach the desired humidity level.
Minimum On Time and High Humidity Comfort Reset are not used with this
method. This option should only be used if the equipment can lower the fan
speed in a call for dehumidification.
Minimum on Time (ISU 9090): This option ensures that the compressor runs
long enough to effectively reduce humidity when the cooling equipment is cycled
on. The compressor will run for the minimum "on time" you set until the desired
humidity level is reached.
High Humidity Comfort Reset (ISU 9100): This option uses the cooling system
to lower the temperature up to 5 F below the current cool setpoint until the
desired humidity is reached. The high humidity comfort range is from 1 to 5 F.
High Humidity Comfort Reset with Minimum On Time (ISU 9090 and 
ISU 9100): This method uses both options above to reduce humidity while
maintaining a comfortable temperature.

To see all dehumidification options, press 

DEHUMIDIFICATION.