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SPLIT TYPE
ROOM AIR CONDITIONER
type
WALL MOUNTED
INVERTER
SERVICE
INSTRUCTION
Models Indoor unit Outdoor unit
AOU09RL2
ASU09RL2
ASU12RL2 AOU12RL2
R410A
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CONTENTS 1. DESCRIPTION OF EACH CONTROL OPERATION 1. COOLING OPERATION................................................................................................ 01-01 2. HEATING OPERATION................................................................................................. 01-02 3. DRY OPERATION......................................................................................................... 01-02 4. AUTO CHANGEOVER OPERATION...............................................
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3. APPENDING DATA 3-1 FUNCTION SETTING................................................................................................. 03-01 3-1-1 INDOOR UNIT.................................................................................................... 03-01 3-1-2 Procedures to change the Function Setting for wireless RC.............................. 03-03 3-2 Thermistor Resistance Values..................................................................................... 03-06 3-2-1 INDO
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R410A WALL MOUNTED type INVERTER 1 . DESCRIPTION OF EACH CONTROL OPERATION
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1. COOLING OPERATION A sensor (room temperature thermistor) built in the indoor unit body will usually perceive difference or variation between a set temperature and present room temperature, and controls the operation frequency of the compressor. * If the room temperature is 2°C(4°F) higher than a set temperature, the compressor operation frequency will attain to maximum performance. * If the room temperature is some degrees lower than a set temperature, the compressor will
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2. HEATING OPERATION A sensor (room temperature thermistor) built in the indoor unit body will usually perceive difference or variation between a set temperature and present room temperature, and controls the operation frequency of the compressor. * If the room temperature is lower by 3°C (6°F) than a set temperature, the compressor operation frequency will attain to maximum performance. * If the room temperature is some degrees higher than a set temperature, the compressor w
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4. AUTO CHANGEOVER OPERATION When the air conditioner is set to the AUTO mode by remote control, operation starts in the optimum mode from among the Heating, Cooling, Dry and Monitoring modes. During operation, the optimum mode is automatically switched in accordance with temperature changes. The temperature can be set between 18°C (64°F) and 30°C (88°F) in 1°C (2°F) steps. (Fig. 3 : Operation flow chart in Auto changeover) START YES Room temp. >Ts+2°C (4°F) ? NO TS : Setting temperature NO R
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5. INDOOR FAN CONTROL 1. Fan speed ( Table 6 : Indoor fan speed ) Speed (rpm) Operation mode Air flow mode ASU09RL2 ASU12RL2 Powerful 1420 1420 Heating Hi 1360 1360 Me+ 1290 1290 Me 1120 1120 Lo 900 900 Quiet 700 700 Cool air prevention 600 600 S-Lo 480 480 Powerful 1400 1400 Cooling/ Fan Hi 1320 1320 Me 1120 1120 Lo 840 860 Quiet 700 700 * Soft Quiet 600 600 X zone: 700 X zone: 700 Dry J zone: 600 J zone: 600 *Note, during Economy operation and operation mode is Fan, air flow is 1 step downs. (
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5. HEATING OPERATION Switch the airflow [Auto], and the indoor fan motor will run according to a room temperature, as shown in Fig. 5 On the other hand, if switched in [Hi] [Quiet], the indoor motor will run at a constant airflow of [Heat] operation modes Quiet, Lo, Me, High, as shown in Table 6. ( Fig.5 : Airflow change - over ( Heating : Auto ) ) When the room TR : Room temperature When the room temperature rises Ts : Setting temperature temperature drops TR-Ts > -1°C (-2°F) Lo mode =
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6. OUTDOOR FAN CONTROL 1. Outdoor Fan Motor Following table shows the type of the outdoor fan motor. The control method is different between AC motor and DC motor. ( Table 8 : Type of Motor ) AC motor DC motor AOU09RL2 AOU12RL2 2. Fan Speed ( Table 9 : Outdoor fan speed ) Cooling Heating Dry Zone Y 730 / 650 / 470 Z 730 / 470 / 360 AOU09RL2 900 / 650 / 470 730 / 470 F 360 / 150 G 210 / 150 Y 860 / 760 / 470 Z 860 / 470 / 380 AOU12RL2 900 / 760 / 680 / 470 760 / 470 F 380 / 280 G 280 / 200 Refe
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7. LOUVER CONTROL 1. VERTICAL LOUVER CONTROL (Function Range) Each time the button is pressed, the air direction range will change as follow: Fig.8 : Air Direction Range Types of Air flow Direction Setting: , , , : During Cooling/Dry modes 1 , , , : During Heating 2 3 The Remote Controller's display does not change. 4 5 6 7 Use the air direction adjustments within the ranges shown above. The vertical airflow direction is set automatically as shown, in accordance with
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8. COMPRESSOR CONTROL 1. OPEARTION FREQUENCY RANGE The operation frequency of the compressor is different based on the operation mode as shown in the Table 11. (Table 11 : Compressor frequency range) Cooling / Dry Heating Minimum Maximum Minimum Maximum AOU09RL2 80rps 18rps 18rps 120rps AOU12RL2 96rps 2. OPEARTION FREQUENCY CONTROL AT NORMAL START UP The compressor frequency soon after the start-up is controlled as shown in the Fig.9. (Fig.9 : Compressor control at start-up) Frequency Frequency
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9. TIMER OPEARTION CONTROL 9-1 WIRELESS REMOTE CONTROLLER The Table 13 shows the available timer setting based on the product model. ( Table 13 : Timer Setting ) ON TIMER / OFF TIMER PROGRAM TIMER SLEEP TIMER ASU09RL2 ASU12RL2 1. OPEARTION FREQUENCY RANGE OFF timer : When the clock reaches the set time, the air conditioner will be turned off. Operation mode Stop mode Set time of timer ON timer : When the clock reaches the set time, the air conditioner will be turned on. Operation mode Stop mod
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3. SLEEP TIMER If the sleep is set, the room temperature is monitored and the operation is stopped automatically. If the operation mode or the set temperature is change after the sleep timer is set, the operation is continued according to the changed setting of the sleep timer from that time ON. In the cooling operation mode When the sleep timer is set, the setting temperature is increased 1°C (2°F). It increases the setting temperature another 1°C (2°F) after 1 hour. After that, the setting tem
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10. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST ) The compressor won't enter operation status for 2 minutes and 20 seconds after the compressor is stopped, even if any operation is given. 11. FOUR-WAY VALVE EXTENSION SELECT At the time when the air conditioner is switched from the cooling mode to heating mode, the compressor is stopped, and the four-way valve is switched in 2 minutes and 20 seconds later after the compressor stopped. 12. AUTO RESTART When the power was interrupted by
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14. FORCED COOLING OPERATION (TEST OPERATION) When FORCED COOLING OPERATION is set, the operation is controlled as shown in Table15. ( Table15 : FORCED COOLING OPERATION ) Forced cooling operation OPERATION MODE Cooling FAN CONT. MODE Hi TIMER MODE - SETTING TEMP. Room Temp is not controlled SETTING LOUVER Horizontal (It is changed follow as setting of remote controller) SWING OFF - ECONOMY Forced cooling operation is started when press MANUAL AUTO button for 10 seconds or more. During the forc
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18. DEFROST OPERATION CONTROL 1. CONDITION OF STARTING THE DEFROST OPERATION The defrost operation starts as shown in the following Table 18. (Table 18 : Condition of starting Defrost Operation) Compressor integrating operation time Normal defrost Less than 25 minutes More than 25 minutes Outdoor heat exchanger temp. < -17°C (1.4°F) = Does not operate (at outside air temp. > -10°C (14°F)) = Outdoor heat exchanger temp. < Outside air temp. = - 7°C (-44.6°F) or Outdoor heat exchanger temp. < - 20
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3. Defrost Flow Chart The defrosting shall proceed by the integrating operation time, outdoor temperature and outdoor heat exchanger temperature as follows. Heating operation start : Compressor ON (Not defrosted for 10 minutes) Normal defrost Integrating defrost Intermittent operation Continuous operation Outside air temp. > -10°C Outside air temp. < -10°C = (14°F) (14°F) Compressor Compressor Compressor Outdoor HEX temp. Outdoor HEX temp. integrating integrating OFF count : Below - 17°C(
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19. OFF DEFROST OPEARTION CONTROL When operation stops in the [Heating operation] mode, if frost is adhered to the outdoor unit heat exchanger, the defrost operation will proceed automatically. In this time, if indoor unit Operation lamp flashes slowly (7 sec ON / 2 sec OFF), the outdoor unit will allow the heat exchanger to defrost, and then stop. 1. OFF DEFROST OPERATION CONDITION In heating operation, the outdoor heat exchanger temperature is less than - 4°C (24.8°F), compressor continuous
