Comfort where it counts 28 P/N 240008111, Rev. G [06/18/10]
Unit-Mounted Controller Operation (continued)
continue to boost the room temperature
back up to setpoint temperature.
If the room temperature rises above the •
setpoint temperature by two degrees,
heating will stop and cooling will continue
to bring the room temperature back down
to setpoint temperature.
e fan will operate continuously at low •
speed while in Dry mode.
In order to prevent short cycling, there is •
a two-minute minimum on time for both
cooling and heating. e minimum o
time is 3 minutes.
Also, there is a 30-second delay between •
the start of the compressor and the start
of the heat source.
Auto changeover operation
For Auto changeover mode (ACO), the unit
must have a heat source and the control must
rst be congured properly, Heat source ON.
See (Figure 28, Page 22).
Auto changeover mode will automatically
operate either cooling or heating.
e control will select heating or cooling •
operation depending on the setpoint
temperature, room temperature and the
dierential seing selected in congura-
tion (Figure 28, Page 22).
For Auto Changeover mode, rst turn the unit
on via the ON/OFF buon.
Select Auto mode via the Mode buon.•
e room temperature and setpoint tem-•
perature will be displayed.
Press either the Up or Down arrow but-•
tons to change the setpoint temperature.
e setpoint temperature will change by
one degree with each successive press of
the Up or Down arrow buons. Holding
the buon in will change the temperature
rapidly.
Place the setpoint temperature below the
room temperature by the dead band amount
selected in the conguration mode.
e compressor will start and the unit will •
run cooling operation as described under
Cool mode, page 26.
If the set point temperature is above the •
room temperature by the dead band
amount selected in conguration, the unit
will run heating operation as described for
heating modes on page 26.
Manual run mode
is is normal operating (non pre-program
run) mode. Seings for temperature, mode
and fan speed are selected by the user and
will not change with the passing of time. e
word PROGM does NOT display on the
LCD.
Pre-programmed run mode
is feature allows the setpoint temperature to
be changed according to the pre-programmed
set point and time of day seings.
e setpoint and time seings are pro-•
grammed into the control through the
7-day programming setup (see Figure 29,
Page 23).
Pre-programmed run mode can be en-•
tered from Cool, Heat or Auto modes
only.
Pre-programmed run mode cannot be •
entered from Dry or Fan modes.
Pressing the PROG buon momentarily •
will enter or exit the pre-programmed
run mode.
PROGRAM will appear in the LCD •
display.
The setpoint will change to the pro-•
grammed seing at the time selected.
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