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1-800-634-7328 DirectSupply.com
Control Panel Operation
The control panel keypad will look like the following:
POWER
• Press the POWER button to turn the unit on
or off. When the unit is on, the power indicator
light will be green. When the unit is off, the
light will go out.
MODE
• Push this button to cycle through the modes
from COOL-HEAT-FAN-COOL. The indicator
light beside the “MODE” option will illuminate,
identifying the mode selected.
• COOL: The default range of set temperatures
is 62
°
F/17
°
C ~ 86
°
F/30
°
C. Cooling begins
automatically when the room temperature is
above the setpoint and stops when the room
temperature is 4
°
F (2
°
C) below the setpoint.
But the compressor will run 5 minutes at least
in COOL mode before stopping. The fan runs in
continuous mode.
• HEAT: The default range of set temperature is
62
°
F/17
°
C ~ 84
°
F/29
°
C. For heat pump models,
the unit can alternate to run between reverse
cycle heat mode and electric heater mode,
according to the difference between the setting
temperature and the room temperature. The fan
motor cycles on and off with the compressor
and electric heater.
NOTE:
The reverse cycle and electric heater
cannot be run at the same time. In the
following cases, it is normal that the reverse
cycle does not operate:
1. When the outdoor temperature is lower than
40
°
F/4
°
C or the room temperature falls to
8
°
F/4.5
°
C below the setpoint temperature.
2. There is a 3-minute minimum compressor
run time at any setting to prevent short
cycling. The indoor fan motors start before
the compressor and stops after the
compressor cycles off.
3. When frost builds up to the evaporator coils,
the unit will defrost automatically and the
compressor will cycle off.
• FAN: Fan operation only without heating
and cooling.
UP/DOWN BUTTONS (+/-)
• Push the UP or DOWN button to increase or
decrease the set temperature of the unit in
cooling or heating mode. The temperature
can be set by increments of 1
°
F or 1
°
C. The
temperature setting appears in the display.
NOTE:
Press and hold “+” and “–” buttons
together for 3 seconds to alternate the
temperature display between
°
F and
°
C scale.
FAN
(FAN SPEED)
• Every time you push this button, the fan speed
cycles through the settings as follows: HIGH-
MED-LOW-HIGH.
DISPLAYS:
• Shows the set temperature in C or F. While on
Fan-only mode, it shows the room temperature.
Control code (on some models):
LC
– PTAC control panel disabled. The unit can
only be controlled via wall thermostat.
Error codes:
AS
– Room temperature sensor error
ES
– Evaporator temperature sensor error
CS
– Condenser temperature sensor error
OS
– Outside temperature sensor error
HS
– Exhaust temperature sensor error
LE
– Wall thermostat error
NOTE:
When error occurs, unplug the unit and
plug it back in. If error repeats, call for service.
Other codes:
LO
– Room temperature is lower than 32°F/0°C
HI
– Room temperature is higher than 99°F/37°C
NOTE:
This air conditioner is designed to be
operated under conditions as follows:
Cooling
operation
Outdoor temp: 64-109
°
F/18-43
°
C
Indoor temp:
62-90
°
F/17-32
°
C
Heating
operation
Outdoor temp: 23-76
°
F/-5-24
°
C
Indoor temp:
32-80
°
F/0-27
°
C
NOTE:
Performance may be reduced if
the unit is used outside of these operating
temperatures.
NOTE:
All the illustrations in this manual
are for explanation purposes only. Your air
conditioner may be slightly different.
