About Advanced Features & Operation
20
FAN OPERATION - Fan operation is available in four dierent modes:
Fan: When only the fan icon is displayed, this indicates that the fan is in 
the Auto mode, will only energize during a heating or cooling cycle, and 
will modulate fan speeds based on temperature demand (see page 17). 
Fan 
, Fan  , or Fan   : Pressing the FAN button will cause the low, 
medium, or high speed fan icon to appear (see page 9), indicating that the 
fan will run continuously.  The fan will de-energize if the thermostat is 
placed in the O mode or a dry contact forced unoccupied time period (see 
page 18).
Notes:
1) If a Duct sensor is connected to this thermostat, then the fan should be 
programmed for continuous operation (step #5, page 11).  This will provide 
airow over the Duct sensor and provide more accurate temperature readings.
2) If the fan is programmed for continuous operation (step #5, page 11), the 
low speed fan will run continuously when the fan is in the Auto mode, but will 
de-energize if the thermostat is placed in the O mode.
MINIMAL DISPLAY - When the thermostat is programmed for a minimal 
display (step #1, page 10), a blank screen will appear.  When a button is 
pressed the full, normal display will appear for 10 seconds.