THERMOSTAT OPERATION
The system “mode” is selected by pressing the system key. Icons on the bottom right corner of the display will indicate the mode;
COOL( ), AUTO( ), HEAT( ), EMER, or OFF. In any mode except OFF, the setpoint temperature will be shown on the right
side of the display. In OFF, this area will be blank. The current temperature will be displayed on the left side of the display.
To operate properly in the AUTO mode, the heat setpoint temperature cannot be the same as or higher than the cool setpoint
temperature. The heat setpoint must be at least 1° lower than the cool setpoint. If you are unable to raise the setpoint temperature
in HEAT or lower the setpoint temperature in COOL, you may be at the 1° difference. To obtain the temperature you wish to
set,change to the opposite mode and move that setpoint away from your temperature.
Automatic System Changeover
When the thermostat is in the AUTO mode, both the
Flame
and
Snow
fl
ake
icons are displayed. The thermostat will call for heat
or cool depending on the room temperature. The setpoint temperature displayed will be that of the last mode called. If the last
system cycle was heat, the HEAT setpoint will be displayed. If the room temperature raises above the HEAT setpoint and the
COOL setpoint and a call for cool is required, the temperature displayed will change to be the COOL setpoint.
For more information on thermostat operation, refer to the instruction manual shipped with your thermostat.
Before you begin con
fi
guring your thermostat, you should be familiar with its features and with the display and the location and
operation of the thermostat buttons. Your thermostat consists of two parts: the
thermostat cover
and the
base
. To remove the
cover, gently pull it straight out from the base. To replace the cover, line up the cover with the base and press gently until the
cover snaps onto the base.
TA21W01 Thermostat - Continued
21
