OC246-22
2.
2-1
(1)
1
3
T
2
T
T
T
o
3
T
4
C
T
c
o
w
NO
T
I
A
D
C
<C
w
1 E
9
MICROPROCESSOR CONTROL
●
Compressor and
outdoor fan : ON-
OFF.
1. OUTLINE OF MICROPROCESSOR CONTROL
●
OFF-ON switching.
●
COOL/DRY-FAN selector switching.
●
Thermostat setting.
●
TIMER mode selector-switching and Timer
setting.
●
HIGH-LOW fan speed switching.
●
AUTO Vane selector (AIR DISCHARGE)
switching.
●
TEST RUN switching.
●
CHECK mode switching.
(Self diagnostic trouble shooting)
●
Room temperature thermistor (RT1)
●
Indoor coil thermistor (RT2)
●
Drain sensor
●
Auto vane’s angle setting.
●
Drain pump : ON-OFF.
●
Emergency stop.
●
Compressor protection
device working
●
Fan speed control.
●
Crankcase heater control
ON-OFF.
●
Self diagnostic function
Independent Control of
Outdoor Unit
OUTPUT to indoor unit
INPUT from indoor unit
INPUT to remote controller
Remote controller board
●
Processes and transmits
orders.
OUTPUT to remote controller
Indoor controller board
●
Receives orders from remote controller and
temperature data from indoor unit.
●
Processes orders and data.
●
Controls indoor and outdoor operation.
●
Self diagnostic function.
w
System control operation.
w
Emergency operation.
w
Set by dip switch on indoor controller board.
●
Transmits the power to remote controller.
OUTPUT to outdoor unit
12VDC
Non-polar, two-wire
cable maximum
length 550 yards
Signal
Remote controller
●
LCD indicator
Polar two-wire cable
12VDC
1 2
1
2
Indoor
unit
Outdoor unit
FILTER
CHECK MODE
TEST RUN
TIMER OFF TIMER
CHECK SET TEMP.
CLOCK AUTO AUTO
START STOP
FAN
SPEED
SWING
AUTO
RETURN
FAN
