5
2) Select FA or SL (Fast or Slow) Heat Pump stage Cycle
Rate - The FA setting is used to produce shorter heating
cycles. The SL setting produces a longer heating/cooling
cycle. Both settings produce very accurate temperature
control and can be set to your personal preference. FA
cycles the system just under .75°F and the SL setting cycles
at approximately 1.2°F.
3) Select FA or SL (Fast or Slow) Auxiliary or Emergency
Cycle Rate - The FA setting is frequently used for gas, oil
or electric heat. The SL setting produces a longer heating
cycle. Both settings produce very accurate temperature
control and can be set to your personal preference. FA
cycles the system just under .6°F and the SL setting cycles
at approximately 1.°F.
4) Select backlit display (d-L OFF or ON) - The display
backlight improves display contrast in low lighting condi-
tions. Selecting backlight ON will keep the light on continu-
ously. Selecting OFF will keep the light off.
5) Select filter replacement run time - The thermostat will
display FILTER after a set time of operation. This is a
reminder to change or clean your air filter. This time can be
set from 0 to 1950 hours in 50 hour increments. A selection
of 000 will cancel this feature. When FLTR is displayed,
you can clear it by pressing
and at the same time.
This resets the timer and starts counting the hours until the
next filter change. Contact your heat pump manufacturer for
a specific replacement/maintenance interval.
6) Select Compressor Lockout (LOC OFF or ON) - Select-
ing LOC ON will cause the thermostat to wait 5 minutes
before turning on the compressor if the heating and cooling
system loses power. It will also wait 5 minutes minimum
between cooling cycles. This is intended to help protect the
compressor from short cycling. Some newer compressors
already have a time delay built in and do not require this
feature. Your compressor manufacturer can tell you if the
feature is already present in their system. When the thermostat
compressor time delay occurs it will flash the Snowflake or
Flame icon for about five minutes.
7) Select Temperature Display Adjustment (4 LO to 4 HI) -
Allows you to adjust the room temperature display up to 4°
1
Step Press Button(s) Displayed (Factory Default) Press or to select: COMMENTS
2
(SL)
FA
5
6
7
8
LOC
(OFF)
on
0 HI
(0)
4 LO to
4 HI
(F) °C
10
Select Compressor lockout OFF or ON
Select temperature display adjustment higher or lower
Select temperature display to °F or °C
4
d-L
(on)
OFF
Select display backlight OFF or ON
Filter
(000)
0 to 1950 hours
(in 50 hour increments)
Select filter replacement run time
Select FA or SL (Fast or Slow) pump cycle rate
Configuration Menu
3
EMER
(FA)
SL
Select FA or SL (Fast or Slow) Auxiliary and
Emergency Aux heating cycle rate
and
and
and
9
FA
(on)
OFF
Select fast second-stage ON or OFF
and
and
and
and
and
Set SYSTEM
switch to OFF
SYSTEM switch must be OFF to configure thermostat options
Set SYSTEM switch
to HEAT or COOL
Returns to normal operation
* Press and
to advance to next item
higher or lower. Your thermostat was accurately calibrated
at the factory but you have the option to change the display
temperature to match your previous thermostat. The cur-
rent or adjusted room temperature will be displayed on the
right side of the display.
8) Select Temperature Display (°F or °C) - Changes the
display readout to Celsius or Fahrenheit as required. The
current room temperature will be displayed on the right side
of the display.
9) Select Fast second stage - In the RUN mode, if the
temperature is manually raised by 3°F (2°C) or more above
room temperature using
and the fast second stage
feature is enabled, FA on, the second stage will energize
immediately. With FA off, the second stage will not energize
until the setpoint temperature is 10°F or more above room
temperature.
OPERATING FEATURES
Now that you are familiar with the thermostat buttons and
display, read the following information to learn about the many
features of the thermostat.
• SIMULTANEOUS HEATING/COOLING SETPOINT
STORAGE — You can enter both your heating and cooling
setpoints at the same time. There is no need to change the
thermostat at the beginning of each season.
• CONFIGURATION MENU — Allows you to customize
certain thermostat options.
SETTING THE THERMOSTAT
This thermostat is very easy to operate. Set the SYSTEM switch
to either HEAT or COOL then press
or until the
temperature you want to maintain is shown on the right side of
the display. If you want to turn the system off, just move the
SYSTEM switch to OFF.
The FAN switch controls the fan operation. When the FAN
switch is set to AUTO, the fan will cycle with the furnace or air
conditioner. When the FAN switch is set to ON, the fan will run
continuously, regardless of SYSTEM switch position.
