8
OPERATING YOUR THERMOSTAT
If at any time during testing your system does not operate
properly, contact a qualifi ed service person.
Fan Operation
If your system does not have a G terminal connection, skip to
Heating System.
1. Turn on power to system.
2. Press FAN button to select
ON
. The blower should begin
to operate.
3. Press FAN button to select
AUTO
. The blower should
stop
immediately.
To prevent static discharge problems, touch side of
thermostat to release static build-up before touching
any keys.
NOTE
Check Thermostat Operation
Do not allow the compressor to run unless the com-
pressor oil heaters have been operational for 6 hours
and the system has not been operational for at least
5 minutes.
CAUTION
!
Heating System
1. Press SYSTEM button to select
Heat
. If the auxiliary
heating system has a standing pilot, be sure to light it.
2. Press
to adjust thermostat setting to 1° above room
temperature. The heat pump system should begin to oper-
ate. The display should show
“System On”
(see Confi gu-
ration menu, item 11).
3. Press
to adjust the thermostat below room tempera-
ture. The heating system should stop operating.
To prevent compressor and/or property damage, if the
outdoor temperature is below 50°F, DO NOT operate
the cooling system.
CAUTION
!
Cooling System
1. Press SYSTEM button to select
Cool.
2. Press
to adjust thermostat setting below room tem-
perature. The blower should come on immediately on high
speed, followed by cold air circulation. The display should
show
“System On”
. If the setpoint temperature display is
fl ashing, the compressor lockout feature is operating (see
Confi guration menu, item 5).
3. Press
to adjust the temperature setting above room
temperature. The cooling system should stop operating.
Choose the Fan Setting (Auto or On)
Fan
Auto
is the most commonly selected setting and runs the
fan only when the heating or cooling system is on.
Fan
On
selection runs the fan continuously for increased air
circulation or to allow additional air cleaning.
Fan
Prog
On
indicates that the fan is programmed to be on
for the entire period. The
Prog Fan On
can be overridden
to have the fan cycle with the system. Press the FAN but-
ton to change the fan to Auto. The fan programming will be
overridden until the next program period begins or until
Run
Schedule
is pressed.
Choose the System Setting
(Cool, Off, Heat, Auto)
Press the SYSTEM button to select:
Heat:
Thermostat controls only the heating system.
Off:
Heating and Cooling systems are off.
Cool:
Thermostat controls only the cooling system.
Auto:
Auto Changeover is used in areas where both heating
and cooling may be required on the same day.
AUTO
allows
the thermostat to automatically select heating or cooling
depending on the indoor temperature and the selected heat
and cool temperatures. When using
AUTO
, be sure to set the
Cooling temperatures more than 1° Fahrenheit higher than
the heating temperature.
Manual Operation for
Non-Programmable Mode
Press the SYSTEM button to select
Heat
or
Cool
and use
the buttons to adjust the temperature to your desired setting.
After selecting your desired settings you can also press the
SYSTEM button to select
AUTO
to allow the thermostat to
automatically change between
Heat
and
Cool
.
Manual Operation (Bypassing the Program)
Programmable Mode
Adjust the temperature wherever you like and then press
the
HOLD
button. This will override the program. The
HOLD
feature bypasses the program and allows you to adjust the
temperature manually, as needed. Whatever temperature
you set in
HOLD
will be maintained 24 hours a day, until you
manually change the temperature or press
Run Schedule
to
cancel
HOLD
and resume the programmed schedule.
Program Override (Temporary Override)
Press buttons to adjust the temperature. This will override the
temperature setting for a two hour override period.
Example:
If you turn up the heat during the morning program,
it will be automatically lowered later, when the temporary hold
period ends. To cancel the temporary setting at any time and
return to the program, press
Run Schedule
.
If the SYSTEM button is pressed to select
AUTO
the
thermostat will change to Heat or Cool, whichever ran last. If
it switches to heat, but you want cool, or it changes to cool,
but you want heat, press both buttons simultaneously to
change to the other mode.