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4
OPERATION
Before you begin using 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, pull it straight out from the base. To replace the cover, line
up the cover with the base and press until the cover snaps onto
the base.
The Thermostat Buttons and Switches
(see figure 5)
➀ Raises temperature setting.
➁ Lowers temperature setting.
➂ FAN switch (ON, AUTO).
➃ SYSTEM switch (COOL, OFF, HEAT).
The Display
➄ Flame icon ( ) is displayed when the SYSTEM switch is in
the HEAT position. Snowflake icon ( )is displayed (non-
flashing) when the SYSTEM switch is in the COOL position.
Snowflake is displayed (flashing) if the thermostat is in
lockout mode to prevent the compressor from cycling too
quickly.
➅ Displays current temperature.
➆ Displays FILTER when the system has run for the selected
filter time period as a reminder to change or clean your air
filter.
➇ Displays setpoint temperature (this is blank when SYS-
TEM switch is in the OFF position).
➈ Displays BATTERY and LO in the current temperature
location when the 2 "AA" batteries are low and should be
replaced.
➉ 1 indicates first stage is energized.
+2 indicates second stage is energized.
CONFIGURATION MENU
The configuration menu allows you to set certain thermostat
operating characteristics to your system or personal require-
ments.
Move SYSTEM switch to the OFF position, then press
and
at the same time to enter the configuration menu. The
display will show the first item in the configuration menu.
The configuration menu chart below summarizes the configura-
tion options. An explanation of each option follows.
Press and at the same time to change to the next menu
item. To exit the menu, move the SYSTEM switch to HEAT or
COOL. If no keys are pressed within fifteen minutes, the
thermostat will exit the configuration menu.
Heating System
1. Move SYSTEM switch to HEAT position. If the heating
system has a standing pilot, be sure to light it.
2. Press to adjust thermostat setting above room tempera-
ture. The heating system should begin to operate.
3. Both stages of the heating system should begin to operate
when the setpoint is set greater than 3°F above ambient.
4. Press
to adjust temperature setting below room tem-
perature. 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.
1. Move SYSTEM switch to COOL position.
2. Press
to adjust thermostat setting below room tempera-
ture. The blower should come on immediately on high
speed, followed by cold air circulation.
3. Both stages of the cooling system should begin to operate
when the setpoint is set greater than 3°F below ambient.
4. Press to adjust temperature setting above room tem-
perature. The cooling system should stop operating.
Cooling System
▲
! CAUTION
2
1
3 4
5
8 79
56
Figure 5. Thermostat display, buttons, and switches
FAN SYSTEM
ON AUTO COOL OFFHEAT
F
C
1 + 2
10
BATTERY FILTER