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6. After pressing SET for the 4th event, the
day of the week along the top will switch
to SAT SUN and AM1 will be displayed.
Repeat steps 2-4 to program the
weekend settings.
7. With the weekend settings programmed, place the HEAT-OFF-COOL
switch in the COOL position. Repeat steps 2-6 to program the
cooling settings.
CUSTOMIZING THE THERMOSTAT
Settings
System
Cool: The thermostat controls the cooling.
Off: The heating and cooling systems are off.
Heat: The thermostat controls the heat.
Emer: The thermostat controls the second stage emergency heat. Use
only when the primary stage of heat is not functioning or requires
service. The display will show CHECK HP
when the heat pump requires service.
Fan
Auto: Equipment controls the fan.
On: The fan operates continuously.
Temperature Differential
The temperature differential for 1
st
stage is factory set at 1.0°F (.5°C). This
means that whenever the room temperature changes by one degree
Fahrenheit from the temperature setting, the system will turn on. If the sys-
tem turns on too often, increase the temperature differential.
NOTE: The temperature differential for 2
nd
stage is factory set at
2.0°F (1.0°C)
Changing Fahrenheit (°F) to Celsius (°C), Clock Setting, Temperature
Differential, and Filter Monitor
1. The thermostat is preset to display the
temperature in degrees Fahrenheit (US
models) or degrees Celsius (Canadian
models). The temperature display can be
changed. Press and hold both the
SELECT and SET buttons for three seconds. The display will flash
either an F or C. Release buttons. Press the or button to switch
the display.
2. Press SET. The display will switch to the clock setting.
3. The display will read CLOC. Use the
or button to toggle between 12 or 24
for the clock setting.
4. Press SET. The display will switch to the
differential setting for 1
st
stage heating
and cooling.
5. The display will read diFF.
Press the or button to adjust the
differential up or down.
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