Page 2 - CONTENTS; DESCRIPTION OF EACH CONTROL OPERATION; DEFROST OPERATION CONTROL
CONTENTS 1. DESCRIPTION OF EACH CONTROL OPERATION 1. COOLING OPERATION................................................................................................ 3. DRY OPERATION......................................................................................................... 2. HEATING ...
Page 5 - WALL MOUNTED type; INVERTER
1 . DESCRIPTION OF EACH CONTROL OPERATION R410A WALL MOUNTED type INVERTER
Page 6 - ( Table 2 : Limit of maximum speed based on outdoor temperature )
( Fig.1 : Outdoor temperature zone ) 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. Minimum frequen...
Page 8 - AUTO CHANGEOVER OPERATION; mode from among the Heating, Cooling, Dry and Monitoring modes.
4. AUTO CHANGEOVER OPERATION 01-03 (Fig. 3 : Operation flow chart in Auto changeover) START Room temp. Room temp. >Ts+2°C (4°F) ? COOLING OPERATION HEATING OPERATION YES YES NO NO NO NO YES YES T S : Setting temperature <Ts- 2°C (4°F) ? Thermostat remains in OFF state for 6 minutes or longer? ...
Page 9 - INDOOR FAN CONTROL; Hi mode
5. INDOOR FAN CONTROL The airflow can be switched in 5 steps such as Auto, Quiet, Lo, Me, Hi, while the indoor fan only runs. When fan mode is set at [Auto], it operates on [Me] fan Speed. 01-04 2. FAN OPERATION 3. COOLING OPERATION Switch the airflow [Auto], and the indoor fan motor will run accord...
Page 11 - OUTDOOR FAN CONTROL; between AC motor and DC motor.
6. OUTDOOR FAN CONTROL ( Table 9 : Outdoor fan speed ) ( Fig.8 : Outside air temperature zone selection ) Refer to Fig.8 01-06 1. Outdoor Fan Motor 2. Fan Speed Following table shows the type of the outdoor fan motor. The control method is different between AC motor and DC motor. *The outdoor fan sp...
Page 12 - VERTICAL LOUVER CONTROL; Types of Air flow Direction Setting:; Range; To select Vertical Airflow Swing Operation
7. LOUVER CONTROL 1. VERTICAL LOUVER CONTROL 3. SWING OPERATION Each time the button is pressed, the air direction range will change as follow: (Function Range) 01-07 The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected. Cooling / Dry mode H...
Page 13 - COMPRESSOR CONTROL; OPEARTION FREQUENCY RANGE; shown in the Table 11.; OPEARTION FREQUENCY CONTROL AT NORMAL START UP
8. COMPRESSOR CONTROL 01-08 1. OPEARTION FREQUENCY RANGE The operation frequency of the compressor is different based on the operation mode as shown in the Table 11. Cooling / Dry Heating Minimum Maximum Minimum Maximum AOU09RL2AOU12RL2 18rps 80rps 18rps 120rps 96rps AOU09RL2AOU12RL2 AOU09RL2AOU12RL...
Page 14 - TIMER OPEARTION CONTROL; -1 WIRELESS REMOTE CONTROLLER
9. TIMER OPEARTION CONTROL 1. OPEARTION FREQUENCY RANGE The Table 13 shows the available timer setting based on the product model. ON TIMER / OFF TIMER PROGRAM TIMER SLEEP TIMER ASU09RL2 ASU12RL2 OFF timer : When the clock reaches the set time, the air conditioner will be turned off. Operation mode ...
Page 17 - COMPRESSOR PREHEATING; ECONOMY OPERATION; POWERFUL OPERATION
01-12 14. FORCED COOLING OPERATION (TEST OPERATION) Forced cooling operation is started when press MANUAL AUTO button for 10 seconds or more.During the forced cooling operation, it operates regardless of room temperature sensor.Operation lamp and Timer lamp blink at the same time during the forced c...
Page 18 - DEFROST OPERATION CONTROL; CONDITION OF STARTING THE DEFROST OPERATION; Release Condition
01-13 18. DEFROST OPERATION CONTROL 1. CONDITION OF STARTING THE DEFROST OPERATION The defrost operation starts as shown in the following Table 18. 2. CONDITION OF THE DEFROST OPERATION COMPLETION Release Condition Outdoor heat exchanger temperature sensor value is higher than +16°C (60.8°F) or Comp...
Page 19 - Defrost Flow Chart; and outdoor heat exchanger temperature as follows.
01-14 Outdoor fan : OFF Compressor speed : 0 rps 4-way valve : OFF Compressor speed : 90rps 3. Defrost Flow Chart The defrosting shall proceed by the integrating operation time, outdoor temperature and outdoor heat exchanger temperature as follows. (Not defrosted for 10 minutes) Heating operation st...
Page 20 - OFF DEFROST OPEARTION CONTROL; OFF DEFROST OPERATION CONDITION; OFF DEFROST END CONDITION
19. OFF DEFROST OPEARTION CONTROL 01-15 1. OFF DEFROST OPERATION CONDITION 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...
Page 21 - VARIOUS PROTECTIONS; DISCHARGE GAS TEMPERATURE OVERRISE PREVENSION CONTROL
20. VARIOUS PROTECTIONS 1. DISCHARGE GAS TEMPERATURE OVERRISE PREVENSION CONTROL The discharge gas thermosensor (discharge thermistor : Outdoor side) will detect discharge gas temperature. When the discharge temperature becomes higher than Temperature , the compressor frequency is decreased 20rps, a...
Page 22 - COOLING PRESSURE OVERRISE PROTECTION; Outdoor temperature
3. ANTIFREEZING CONTROL (Cooling and Dry mode) The compressor frequency is decrease on cooling & dry mode when the indoor heat exchanger temperature sensor detects the temperature lower than Temperature . Then, the anti-freezing control is released when it becomes higher than Temperature . (Tabl...
Page 23 - . TROUBLE SHOOTING
2 . TROUBLE SHOOTING R410A WALL MOUNTED type INVERTER
Page 24 - Please refer the flashing pattern as follows.; Error Contents
2. TROUBLESHOOTING 02-01 2-1 ERROR DISPLAY Please refer the flashing pattern as follows. Indoor Unit : ASU09/ 12RL2 The Operation, Timer and Economy lamps operate as follows according to the error contents. Manual auto switch error Room temp. sensor error Indoor unit PCB model information error Erro...
Page 25 - -2 TROUBLE SHOOTING WITH ERROR CODE; Trouble shooting 1-1; OK; Serial communication error; referring to Installation Manual or Data &; Refer to error code table.
02-02 2-2 TROUBLE SHOOTING WITH ERROR CODE Trouble shooting 1-1 OUTDOOR UNIT Error Method: Detective Actuators: Detective details: Forecast of Cause: OK YES YES NO RED WHITE BLACK BLACK WHITE GREEN + - OK Serial communication error (Serial Reverse Transfer Error) Outdoor unit Main PCB 1. Connection ...
Page 27 - Trouble shooting 2; Indoor unit Controller PCB; Change Controller PCB.
Detective Actuators: Detective details: Forecast of Cause: Check Point 3 : Replace Controller PCB Check Point 2 : Check Indoor unit electric components YES YES NO Trouble shooting 2 INDOOR UNIT Error Method: Indoor unit PCB model information error Indoor unit Controller PCB 1. External cause 2. Defe...
Page 28 - Trouble shooting 3; INDOOR UNIT; INDOOR UNIT Error Method:; Manual auto switch error; Check Point 1 : Check the Manual auto switch; Check Point 2 : Replace Controller PCB
02-05 Trouble shooting 3 INDOOR UNIT INDOOR UNIT Error Method: Detective Actuators: Detective details: Forecast of Cause : OK OK Manual auto switch error Indoor unit Controller PCB Indicator PCB Manual auto switch When the Manual auto switch becomes ON for consecutive 60 or more seconds. 1. Manual a...
Page 29 - Trouble shooting 4; Check Point 1 : Check connection of Connector; Temperature; Room temp. sensor error; If the voltage does not appear, replace Controller PCB.
Trouble shooting 4 INDOOR UNIT INDOOR UNIT Error Method: Detective Actuators: Detective details: Forecast of Cause : Check Point 2 : Check Point 2 : Remove connector and check Thermistor resistance value Check Point 1 : Check connection of Connector Check Point 3 : Check Point 3 : Check voltage of C...
Page 30 - Trouble shooting 5; sensor error
Trouble shooting 5 INDOOR UNIT INDOOR UNIT Error Method: Detective Actuators: Detective details: Forecast of Cause : Check Point 2 : 62.9 102.1 131.4 170.7 223.3 295.1 Resistance Value (k ) Temperature OK OK OK 17.11 25.8 39.78 Resistance Value (k ) Temperature Indoor unit Heat Ex. middle temp. sens...
Page 31 - Indoor unit fan motor error
Trouble shooting 6 INDOOR UNIT Error Method: Detective Actuators: Detective details: Forecast of Cause: Check Point 1 : Check rotation of Fan Check Point 2 : Check ambient temp. around motor OK OK OK Indoor unit fan motor error Indoor unit Controller PCB Indoor unit Fan motor 1. Fan rotation failure...
Page 32 - Trouble shooting 7; Outdoor unit Main PCB
Detective Actuators: Detective details: Forecast of Cause: Check Point 2 : Replace Main PCB YES YES NO Trouble shooting 7 OUTDOOR UNIT Error Method: Outdoor unit main PCB model information error or communication error Outdoor unit Main PCB 1. External cause (Noise, temporary open, voltage drop) 2. M...
Page 33 - Trouble shooting 8; OUTDOOR UNIT Error Method:; PFC circuit error; If Check Point 1, 2 do not improve the symptom, change Main PCB.
Trouble shooting 8 INDOOR UNIT OUTDOOR UNIT Error Method: Detective Actuators: Detective details: Forecast of Cause : OK OK OK OK PFC circuit error Outdoor unit Main PCB 1. External cause 2. Connector connection failure 3. Main PCB failure Check Point 2 : Check connection of Connector Check if conne...
Page 34 - Trouble shooting 9
02-11 Detective Actuators: Detective details: Forecast of Cause : Check Point 1 : Replace Main PCB Outdoor unit Main PCB 1. Main PCB failure Change Main PCB. Trouble shooting 9 OUTDOOR UNIT Error Method:Trip terminal L error Indicate or Display: Refer to error code table. When the signal from FO ter...
Page 35 - Trouble shooting 10; Discharge temp. sensor error; If the voltage does not appear, replace Main PCB.
Trouble shooting 10 INDOOR UNIT OUTDOOR UNIT Error Method: Detective Actuators: Detective details: Forecast of Cause : Check Point 2 : Check Point 3 : 64.22 102.5 130.9 168.6 218.6 286.3 Resistance Value (k ) Temperature OK OK OK OK 41.33 1.956 3.430 4.639 6.375 8.909 Resistance Value (k ) Temperatu...
Page 37 - Outdoor temp. sensor error
Trouble shooting 12 OUTDOOR UNIT Error Method: Detective Actuators: Detective details: Forecast of Cause : Check Point 2 : 26.53 34.57 45.40 60.23 80.56 109.0 Resistance Value (k ) Temperature OK OK OK OK 20.56 6.408 7.978 10.00 12.26 16.04 Resistance Value (k ) Temperature Outdoor temp. sensor erro...
Page 38 - Check Point 4 : Replace Main PCB; Current sensor error; Check external cause at Indoor and Outdoor
Trouble shooting 13 OUTDOOR UNIT Error Method: Detective Actuators: Detective details: Forecast of Cause : Check Point 4 : Replace Main PCB YES NO OK Current sensor error Outdoor unit Main PCB Check Point 2 : Check connections of Outdoor Unit Electrical Components Check if connector is removed. Chec...
Page 39 - If Check Point 1 ~ 3 do not improve the symptom, change Main PCB.
Trouble shooting 14 OUTDOOR UNIT Error Method: Detective Actuators: Detective details: Outdoor unit Main PCB Compressor Trip detection 02-16 Indicate or Display: Refer to error code table. When more than normal operating current to IPM in Main PCB flows, the compressor stops. After the compressor re...
Page 40 - Compressor rotor position; If Check Point 1,2 do not improve the symptom, change Main PCB.; Check Point 1 : Check Noise from Compressor; If an abnormal noise show, replace Compressor.; If Check Point 3 do not improve the symptom, change Compressor.
Trouble shooting 15 OUTDOOR UNIT Error Method: Detective Actuators: Detective details: Forecast of Cause : Check Point 2 : Check connection of around the Compressor components OK OK OK OK Check Point 3: Replace Main PCB Outdoor unit Main PCB Compressor Compressor rotor position detection error 1. De...
Page 41 - Outdoor unit fan motor error; If the voltage is not correct, replace Main PCB.
Trouble shooting 16 OUTDOOR UNIT Error Method: Detective Actuators: Detective details: Forecast of Cause: Check Point 3 : Check Outdoor unit fan motor OK OK Outdoor unit fan motor error Outdoor unit Main PCB Outdoor unit Fan motor 1. Fan rotation failure 2. Motor protection by surrounding temperatur...
Page 42 - If defective, replace the thermistor
Trouble shooting 17 INDOOR UNIT Error Method: Detective Actuators: Detective details: Forecast of Cause : OK OK OK OK 4-way valve error Indoor unit Controller PCB Heat Ex. temperature thermistor Room temperature thermistor 4-way valve When the indoor heat exchanger temperature is compared with the r...
Page 43 - Trouble shooting 18
Trouble shooting 18 INDOOR UNIT OUTDOOR UNIT Error Method: Discharge temperature error 02-20 Indicate or Display: Refer to error code table. <Cooling operation> OK OK OK OK OK <Heating operation> Outdoor unit Main PCB Discharge temperature thermistor "Protection stop by "discharg...
Page 44 - Trouble shooting 19; Indoor Unit - No Power; Power supply failure 2. External cause; to Installation Manual or Data & Technical Manual.; -3 TROUBLE SHOOTING WITH NO ERROR CODE; Check Point 3 : Check Electrical Components; >> If Fuse is open, check if the wiring between Terminal and Main PCB
Trouble shooting 19 Forecast of Cause: OK OK Indoor Unit - No Power 1. Power supply failure 2. External cause 3. Electrical components defective Check Point 1 : Check Installation Condition Isn’t the breaker down? Check loose or removed connection cable. >>If abnormal condition is found, corre...
Page 45 - Outdoor Unit - No Power
Trouble shooting 20 Forecast of Cause: Check Point 3 : Check Electrical Components OK OK OK OK YES YES OK NO Check Point 1 : Check Installation Condition Outdoor Unit - No Power 1. Power supply failure 2. External cause 3. Electrical Components defective Isn’t the breaker down? Check loose or remove...
Page 46 - If the symptom does not change by above Check 1, 2, replace Main PCB.
Trouble shooting 21 Forecast of Cause: Check Point 2 : Check external cause at Indoor and Outdoor (Voltage drop or Noise) Check Point 1 : Check indoor and outdoor installation condition OK OK OK OK No Operation (Power is ON) 1. Setting/ Connection failure 2. External cause 3. Electrical component de...
Page 47 - Attention; Trouble shooting 22; No Cooling / No Heating; referring to Installation Manual or Data & Technical
Attention Trouble shooting 22 Forecast of Cause: Check Point 2 : Check Outdoor unit operation Check Point 1 : Check Indoor unit Check Point 3 : Check Site condition Check Point 5 : Check Refrigeration cycle Check Point 4 : Check Indoor/ Outdoor installation condition Pipe (In) Pipe (Out) Pipe (In) P...
Page 48 - Abnormal Noise; Diagnosis method when abnormal noise is occurred; Water Leaking; Erroneous installation 2. Drain hose failure
Trouble shooting 23 Forecast of Cause : Trouble shooting 24 Forecast of Cause: OK OK OK OK OK OK OK OK OK OK MPa MPa Abnormal Noise 1. Abnormal installation (Indoor/ Outdoor) 2. Fan failure (Indoor/ Outdoor) 3. Compressor failure (Outdoor) Diagnosis method when abnormal noise is occurred Abnormal no...
Page 49 - SERVICE PARTS INFORMATION 1; Compressor; Compressor is considered (Locked; Replace Compressor; Defective Compressor; -4 SERVICE PARTS INFORMATION
SERVICE PARTS INFORMATION 1 MPa MPa Compressor Diagnosis method of Compressor ( If Outdoor Unit LED displays Error, refer to Trouble shooting ) Does not start up Is there open or loose connection cable? Check Main PCB, connection of Compressor, and winding resistance. (Refer to the next page). Check...
Page 50 - SERVICE PARTS INFORMATION 2; Check Point 1 : Check Connection; Inverter Compressor; Check terminal connection of Compressor; If the resistance value is 0 or infinite, replace Compressor.
SERVICE PARTS INFORMATION 2 Check Point 1 : Check Connection Check Point 2 : Check Winding Resistance Check Point 3 : Replace Main PCB C S R Inverter Compressor Check terminal connection of Compressor (loose or incorrect wiring) Check winding resistance of each terminal If the resistance value is 0 ...
Page 51 - DC; Outdoor unit Electronic Expansion Valve; If Resistance value is abnormal, replace EEV.
SERVICE PARTS INFORMATION 3 Check Point 2 : Check Coil of EEV Yellow - RedOrange - RedBlue - Red White - Red Read wire 46 4 Resistance value Check Point 1 : Check Connections Check Point 5 : Check Opening and Closing Operation of Valve Check Point 3 : Check Voltage from Main PCB. Check Point 4 : Che...
Page 52 - SERVICE PARTS INFORMATION 5; Outdoor unit fan motor; SERVICE PARTS INFORMATION 4; Indoor unit fan motor
SERVICE PARTS INFORMATION 5 Check Point 1 : Check rotation of Fan Outdoor unit fan motor Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor) >>If Fan or Bearing is abnormal, replace it. Check Point 2 : Check resistance of Outdoor Fan Motor Refer ...
Page 57 - Entering the Function Setting Mode; -1-2 Procedures to change the Function Setting for wireless RC; Setting the Remote controller Signal Code; the signal in the FUNCTION SETTING.; FUNCTION SETTING METHOD (for Wireless remote controller)
The remote controller resets to signal code when the batteries in the remote controller are replaced. If you use a signal code other than signal code , reset the signal code after replacing the batteries. If you do not know the air conditioner signal code setting, try each of the signal codes ( ) un...
Page 58 - Selecting the Function Number and Setting Value; power and turn it on again.; CAUTION; (Press the MODE button to switch between the left and right digits.)
03-04 (2) Press the FAN button to proceed to setting the value. (Press the FAN button again to return to the function number selection.) STEP 2. Selecting the Function Number and Setting Value (5) Press the RESET button to cancel the function setting mode.(6) After completing the FUNCTION SETTING, b...
Page 59 - REMOTE CONTROLLER SIGNAL CODE SETTING; until you find the code which operates the air conditioner.
03-05 (1) Press the MODE button for at least 5 seconds to display the current signal code. (initially set to ). (3) Press the MODE button again. The signal code will be changed. (2) Press the SET TEMP.( ) ( ) button to change the signal code between . Match the code on the display to the air conditi...
Page 60 - Room temperature thermistor; Discharge thermistor; Thermistor Resistance Values
-10.0 55.46 -30.0 977.6 -5.0 42.36 -25.0 713.2 0.0 32.67 -20.0 526.8 5.0 25.39 -15.0 392.1 10.0 19.91 -10.0 295.1 15.0 15.71 -5.0 223.3 20.0 12.5 0.0 170.7 25.0 10.0 5.0 131.4 30.0 8.051 10.0 102.1 35.0 6.52 15.0 79.81 40.0 5.316 20.0 62.9 45.0 4.354 0.76 0.95 1.17 1.41 1.67 1.94 2.22 2.50 2.77 3.03...