NOTE: The thermostat will continue to follow the schedule
IV. FAN OPERATION
until a new one is entered.
If Fan On is selected, the fan will run continuously during
occupied schedule (except when Mode is switched to OFF).
The fan will be off during unoccupied schedule except during
heating or cooling operation.
If only one occupied schedule is selected, the Occupied 2
and 3 schedules are skipped.
If the start time is set later in the day than the stop time,
the program will run from midnight of that day to the stop
time and then from the start time to midnight.
If the same start and stop times are programmed for an
occupancy schedule, the thermostat will be in Occupied mode
for 24 hours.
If Fan On is not selected, the fan will only operate during
heating or cooling operation.
V. EMERGENCY HEAT
Emergency heat is available for heat pump applications. To
turn on emergency heat, press and hold the Fan button. While
holding the Fan button, press the UP button for 2 seconds.
An ‘‘EH’’ will be displayed. During emergency heat, the fan
will operate and the second stage of heat will be energized
If one occupied period starts or stops within another occu-
pied period, the lower numbered schedule has priority. For
example, if schedule Occupied 3 is running for 24 hours
and occupied schedule 2 comes on from 1 to 3 PM, the set
points from Occupied 2 are in effect from 1 to 3 PM.
(locking out the ﬁrst stage compressor). To exit emergency
B. Overriding the Schedule
heat, press and hold the Fan button. While holding the Fan
button, press the UP button for 2 seconds. During emergency
heat, only OFF and HEAT modes are available.
The schedule can be overridden during operation by pressing
the UP or DOWN ARROW buttons to change the desired tem-
perature. The thermostat will use the new set point until the
next scheduled time period starts.
VI. ELECTRIC HEAT
When the Electric Heat option in the advanced set up is set
to ON (conﬁgured by installer), the thermostat will turn on
the fan immediately any time there is a heat demand. This
feature should only be used on electric heating applications.
Do not use with gas heat.
VII. HOLIDAY MODE
When the thermostat is in Holiday mode, the thermostat will
operate under Unoccupied set points. To conﬁgure and acti-
vate the Holiday mode, press the Holiday button. The ‘‘HOL’’
icon will be displayed along with the remaining days of Holi-
day mode operation. Press the UP or DOWN ARROWS to
select the number of days that the holiday schedule will be in
effect. A value of 0 disables Holiday mode. The duration can
be set from 1 to 99 days. The thermostat will enter Holiday
mode on midnight of the next day after the mode has been
activated. Holiday mode will remain in effect until midnight
of the last conﬁgured day.
Fig. 7 — Copy Command Display
The Mode button selects the operating mode of the thermo-
stat. If OFF is selected, the thermostat will not enter Heat-
ing or Cooling mode. If HEAT is selected, the thermostat will
only enter Heating mode (if the room temperature is below
the heating set point). If COOL is selected, the thermostat
will only enter Cooling mode (if the room temperature is above
the cooling set point). If AUTO is selected, the thermostat will
enter Heating or Cooling mode based on the room tempera-
ture and the heating and cooling set points. If PROGRAM
ON is selected, the stored schedule is enabled and the ther-
mostat will follow the Occupied and Unoccupied schedules
stored in its memory.
If the Holiday mode is in effect, the number of days remain-
ing will blink on and off and the ‘‘Unoccupied’’ icon will be
displayed. The Override button will be active during Holiday
mode. The Dry Contact Switch is ignored.
To turn off the Holiday mode before the remaining conﬁg-
ured days have passed, press the Holiday button to enter into
the conﬁguration mode. Press the DOWN ARROW to set the
number of days to zero. Holiday mode will be disabled.
VIII. DRY CONTACT SWITCH
A dry contact switch is provided to allow an external device
to force the thermostat into Occupied 1. When the thermo-
stat is forced into Occupied 1 via the dry contact closure, the
Occupied 1 icon will blink each second.
When the thermostat mode is set to AUTO, the thermo-
stat will provide automatic changeover from Heating to Cool-
ing mode and Cooling to Heating mode when required. The
thermostat will automatically switch to maintain the desired
temperature setting. The thermostat does not need to be manu-
ally changed from heating to cooling or cooling to heating
A. Soft Start
When multiple thermostats are controlled by the same exter-
nal device, a Soft Start option can be used to stagger the turn
on times of the HVAC equipment. This feature may cause a
delay in operation after entering Occupied 1.
II. TWO-STAGE OPERATION
The second stage of heat or cool is turned on when the ﬁrst
stage has been on for a minimum of 2 minutes and the tem-
perature differential from the set point is equal to or greater
than the set point plus the deadband plus 2 degrees.
IX. REMOTE TEMPERATURE SENSOR
A remote temperature sensor is available to read the tem-
perature from a space. If a remote temperature sensor is
connected, the thermostat will ignore the reading of its
internal sensor. When the thermostat is using a reading from
a remote sensor, the degree symbol above the temperature
reading will blink.
III. CLOCK BACKUP
In the event of a power loss, the thermostat will keep
time for a minimum of 48 hours without external power or