
8
THERMOSTAT/REMOTE SENSOR QUICK REFERENCE
Figure 8 – Thermostat display, buttons and switches
Before operating the thermostat, familiarize yourself with the
display and button functions. Both thermostat and remote
sensor consist of two parts: the cover and the base. To remove
a cover, pull it straight out from the base. To replace a cover, line
it up with the base and press until the cover snaps into place on
the base.
The Thermostat Buttons and Switches and Display
1
Raises and lowers the temperature setting.
2
Light flashes every 20 seconds indicating acceptable
signal reception from indoor or outdoor remote sensor.
3
Buttons for setting time (Time), programming (Prgm),
running program (Run) and bypassing program to
hold a constant temperature (Hold).
4
SYSTEM button (COOL, AUTO, HEAT, OFF, EMER
heat pump systems only).
5
FAN switch (ON, AUTO).
6
Displays the active temperature sensor (outside,
remote, local) and its sensed temperature if more than
one sensor is enabled.
7
Displays ( ) when in keypad lockout mode.
8
Indicates day of the week.
9
Indicates the thermostat mode information:
"HOLD" alternates with the system mode (see item 12)
if the HOLD button is pressed to bypass the program
and maintain a constant temperature.
10
Displays currently programmed set temperature (blank
when SYSTEM is OFF).
11
Alternately displays the current time and the tempera-
ture average of sensors (thermostat [local] and/or
indoor remote) turned on.
12
"HEAT" is displayed when set to heating,
"COOL" is displayed when set to cooling,
"AUTO" is displayed when set for automatic change-
over between heating and cooling.
When "AUTO" is displayed, the currently active mode
(Heat or Cool) will also display.
"EMER" is displayed flashing (heat pump systems
only) when the thermostat is set to the Emergency
Mode. Emergency is used to bypass the heat pump
and use only the back-up heating system.
"FLTR" is displayed as a reminder to change or clean
the air filter after system has run for the programmed
filter time period.
13
Stage 1 & 2 indicator.
"STG 1" indicates when the first stage heat or cool is
energized. "STG + 2" indicates when the second stage
heat or cool is energized. "+2" blinking indicates
Auxiliary Heat stages are energized on Heat Pump
Systems.
2
4
5
14
Displays "LR" when the limited range feature is
activated. Limited range limits the temperature the
thermostat can be set to.
15
Indicates the system is sending a fault signal to the
thermostat "L" terminal. This does not indicate a fault
in the thermostat.
16
Antenna will display for a few seconds when the remote
or outdoor transmitted signal is received.
17
Indicates the current signal strength level of the remote
temperature system. Signal strength level is low (one
bar on), medium (two bars on) or high (three bars on).
The remote will operate with 1 bar showing.
8
6
9
12
7
10
1311
14
15
17
16
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