Comfort where it counts 32 P/N 240008111, Rev. G [06/18/10]
Controller Features
Short Cycle Protection (ASCT)
e electronic control incorporates an anti-
short-cycle timer (ASCT) feature designed
to protect the compressor from short cycling.
e ASCT is activated immediately following
the o cycle of the outdoor unit. Once the
room temperature is satised and the outdoor
unit switches o, the ASCT will not allow the
outdoor unit to restart unit a three-minute
time period has elapsed.
This feature will prevent the compressor
and heat source from rapid restarts. Once
switched o, or following a power outage, the
compressor or heat source shall not restart for
a minimum of three minutes.
Staggered Start protection
Designed for systems with electric heat, in
heat pump and dry modes the staggered-start
feature will prevent the compressor and elec-
tric heater from starting simultaneously. ere
is a thirty-second delay between the start of
the compressor and start of the electric heater
while in Dry mode and Heat pump mode.
Minimum run time
Once started, the minimum on time prevents
either the compressor or heat source from
cycling o prematurely. e minimum ON
time for both the compressor and electric
heat is two minutes. Minimum on time is
available only while the control is congured
for Unit mounted keypad operation. Mini-
mum on times are disabled while in Remote
thermostat mode.
LCD Back Light
e LCD display can be illuminated using the
LCD back light feature. e selectable seings
are O, On, and Intermient, and can be set
in the Conguration.
By selecting OFF, the backlight will re-•
main o at all times.
By selecting ON, the backlight will remain •
on at all times, including while in the O
mode interface.
If Intermient is selected, the backlight •
will remain for 10 seconds after the
push of any buon while the control is
in the On mode or aer the push of the
ON/OFF buon while in the O mode
interface.
Drain Pan Sensor
e drain pan sensors monitor the condensate
level in each of the units drain pans. Should
the water in either pan reach a critical level,
the monitor will automatically signal the main
control unit. The controls microprocessor
will, in turn, switch o the condensing unit
for a minimum of three minutes and until the
fault condition has been cleared, to prevent
further condensate production. A fault code,
E02, will then ash on the controller’s LCD
display and will automatically reset once the
fault condition is cleared.
Annunciation
e unit is equipped with an annunciation fea-
ture the controller will beep, providing the
user with audio feedback conrming that the
microprocessor has received its commands.
e annunciation feature must be activated
in the conguration. e selections are OFF
and ON. If OFF is selected, annunciation will
remain o. If ON is selected, then annuncia-
tion will beep with the push of any buon in
the On mode or with the push of the ON/
OFF buon while in the o mode.
While in Remote thermostat mode, only the
FAN and TIME buons are activated and will
beep when pressed.
Memory Backup
In the event of a power failure the control will
retain all of it’s seings, including the mode
of operation. When power is restored, the
control will return to the mode of operation
that it was in prior to the power failure, aer
a three minute time delay.
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