OC275-20
10 MICROPROCESSOR CONTROL
1. OUTLINE OF MICROPROCESSOR CONTROL
● OFF-ON switching.
● COOL • DRY • FAN selector switching.
● HIGH-LOW fan speed switching.
● TIMER mode selector-switching
● Timer setting.
● Self diagnostic troubleshooting.
● TEST RUN switching.
● CHECK mode switching.
● AUTO Vane setting.
INPUT to remote controller OUTPUT to remote controller
● Indication LCD lights.
REMOTE CONTROLLER
● Processes and transmits orders.
ON/OFF TEMP
MODEL
SELECT
NOT AVAILABLE
SWING
CHECK
FAN
TEST
RUN
˚F
˚C
AMPMSTOP
START
AMPM
COOL
DRY
AUTO
FAN
HEAT
● Room temperature thermistor.
● Indoor coil thermistor.
Independent Control of
Outdoor Unit
OUTPUT to indoor unit
INPUT from indoor unit
12VDC
● 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.<Optional>
w Emergency operation
● Fan: ON-OFF.
● Fan speed: HIGH-LOW.
● AUTO vane’s angle setting.
● Emergency stop.
INPUT from outdoor unit
● Compressor protection device working.
OUTPUT to outdoor unit
● Compressor motor and outdoor fan motor : ON-OFF.
OUTPUT CONTROLLER
BOARD
● Receives orders from
indoor controller.
● Emergency stop.
polar, two (2) - core cable
Outdoor unit
INDOOR CONTROLLER BOARD
Indoor unit
OC275--1.qxp 01/12/14 3:06 PM Page 20