User Guide

63-2674—03 10
Operating the Thermostat
Setting “System & Fan”
SETTING SYSTEM
The System selections vary based on the HVAC system type.
HEAT — thermostat controls the heating system.
OFF — both heating and cooling systems are off.
COOL — thermostat controls the cooling system.
AUTO — thermostat controls both the heating and cooling systems based on
temperature.
SETTING FAN
Fan selections vary based on the HVAC system type.
ON—fan runs continuously. Use this setting for improved air circulation or for more
efficient central air cleaning.
AUTO—fan is controlled by the system. Typically, the fan runs only during cooling or
heating operation.
LO—low fan speed (fan coil, PTAC application).
MED—medium fan speed (fan coil application).
HI—high fan speed (fan coil, PTAC application).
Setting Temperature Overrides
There are three temperature override options:
— Hold Temperature Until
— Override, and
—Holiday.