THERMOSTAT QUICK REFERENCE
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 and switches (see fig. 5). 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
1Raises temperature setting.
2Lowers temperature setting.
3SYSTEM switch (COOL, OFF, HEAT).
4FAN switch (ON, AUTO).
The Display
5Indicates days of the week. Indicates setpoint temperature. This is blank when system switch is in the OFF position.
Setpoint temperature is displayed (flashing) if the thermostat is in lockout mode to prevent the compressor from cycling too quickly.
6“Save” indicates the Cool Savings feature is enabled in the configuration menu. “Save” (flashing) indicates Cool
Savings feature is active.
7Flame icon (
) is displayed when the SYSTEM switch is in the HEAT position. Flame icon (
) is displayed flashing when thermostat is calling for heat. Snowflake icon (
) is displayed 
) and is displayed (flashing) if the thermostat is calling for cool.
8Displays current temperature.
9“Service” indicates a diagnostic fault in the heating/cooling system. It does not indicate a fault in the thermostat.
10“Change Filter” is displayed when the system has run for the programmed filter time period as a reminder to change or clean your air filter.
11“
” indicates power level of batteries. “Change 
” indicates batteries should be replaced.
Figure 5. Thermostat display, buttons, and switches
1
2
SYSTEM
3 4
5 11 
6
10 9 8 7
INSTALLER/CONFIGURATION MENU
The configuration menu allows you to set certain thermostat operating characteristics to your system or personal requirements.
To enter the menu: Set your thermostat to OFF and press the 
and 
buttons simultaneously. The display will show the first
item in the configuration menu. Press 
and 
to change to the next menu item. To exit the menu, set the system switch to Cool or Heat. If no keys are pressed within fifteen minutes, the thermostat will revert to normal operation.
Configuration Menu
Menu | Press | Displayed | Press | or | Comments |
Reference | Key | (Factory | to select from |
| |
Number |
| Default) | listed options |
| |
1 | and | SS |
| HP | Select Single Stage (SS) or |
|
|
|
|
| Heat Pump (HP, 1 compressor) |
2 | and | CS |
| On | Select Cool Savings Feature On or OFF |
|
| (OFF) |
|
|
|
| and | CS | 1, 2, 3, 4, 5, 6 If CS selected On, selects Cool Savings value | ||
|
| (3) |
|
|
|
3 | and | CR Heat | FA, SL | Select Adjustable Anticipation, cycle rate, | |
|
| (ME) |
|
| Heat Single Stage |
4 | and | CR Cool |
| SL | Select Adjustable Anticipation, cycle rate, |
|
| (FA) |
|
| Cool Single Stage |
5 | and | CL |
| On | Select Compressor lockout OFF or On |
|
| (OFF) |
|
|
|