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Fujitsu ASU12RL2 manual

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Table of contents for the manual

  • Page 1

    SPLIT TYPE ROOM AIR CONDITIONER WALL MOUNTED type Models Indoor unit Outdoor unit INVERTER SERVICE INSTRUCTION R410A ASU09RL2 ASU12RL2 AOU09RL2 AOU12RL2[...]

  • Page 2

    CONTENTS 1. DESCRIPTION OF EACH CONTROL OPERATION 1. COOLING OPERATION................................................................................................ 3. DRY OPERATION......................................................................................................... 2. HEATING OPERATION.........................................[...]

  • Page 3

    3. APPENDING DATA 3-1 FUNCTION SETTING................................................................................................. 3-1-1 INDOOR UNIT.................................................................................................... 3-1-2 Procedures to change the Function Setting for wireless RC.............................. 03[...]

  • Page 4

    [...]

  • Page 5

    1 . DESCRIPTION OF EACH CONTROL OPERATION R410A WALL MOUNTED type INVERTER[...]

  • Page 6

    ( 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 frequency Maximum frequency Maximum frequency AOU09RL2 AO[...]

  • Page 7

    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 fre[...]

  • Page 8

    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? System stops or operation command other than a[...]

  • Page 9

    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 according to a room temperature, as shown in Fig4. On th[...]

  • Page 10

    The maximum value of the indoor fan speed is set as shown in Fig.6 based on the detected temperature by the indoor heat-exchanger sensor on heating mode. ( Fig.6 : Cool air prevension control ) 01-05 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 han[...]

  • Page 11

    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 speed mentioned adove depends on the compressor freq[...]

  • Page 12

    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 Horizontal flow Heating mode Downward flow When the[...]

  • Page 13

    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 AOU09RL2 AOU12RL2 18rps 80rps 18rps 120rps 96rps AOU09RL2 AOU12RL2 AOU09RL2 AOU12RL2 56rps 67rps 75rps (Table 11 : Compressor freq[...]

  • Page 14

    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 Stop mode Set time of timer ON timer : When the cl[...]

  • Page 15

    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. Set temperature rises ( Ts : Set temperature ) Stop o[...]

  • Page 16

    01-11 The compressor won't enter operation status for 2 minutes and 20 seconds after the compressor is stopped, even if any operation is given. 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 compres[...]

  • Page 17

    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 cooling operation. They blink for 1 second ON and[...]

  • Page 18

    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 Compressor operation time has passed 15 minutes. (Ta[...]

  • Page 19

    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 start : Compressor ON Outdoor HEX temp.: Over 16°C [...]

  • Page 20

    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 ON / 2 sec OFF), the outdoor unit will allow the [...]

  • Page 21

    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, and it continues to decrease the frequency for 20rp[...]

  • Page 22

    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 . (Table 22 : Anti-freezing Protection Operation / Releas[...]

  • Page 23

    2 . TROUBLE SHOOTING R410A W ALL MOUNTED type INVER TER[...]

  • Page 24

    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 Error Contents Continuous Continuous 4 times Continuou[...]

  • Page 25

    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 failure 2. External cause 3. Main PCB failure Chec[...]

  • Page 26

    02-03 Trouble shooting 1-2 INDOOR UNIT Error Method: Detective Actuators: Detective details: Forecast of Cause: OK YES YES NO + - OK Serial communication error (Serial Forward Transfer Error) Indoor unit Controller PCB Indoor unit Fan motor 1. Connection failure 2. External cause 3. Controller PCB failure 4. Indoor unit fan motor failure Check Poin[...]

  • Page 27

    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. Defective connection of electric components 3. Control[...]

  • Page 28

    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 auto switch failure 2.Controller PCB and Indicator [...]

  • Page 29

    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 Controller PCB (DC5.0V) 10.0 12.5 15.71 19.91 25.39[...]

  • Page 30

    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. sensor error Indoor unit Controller PCB Heat Ex. tempe[...]

  • Page 31

    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 2. Fan motor winding open 3. Motor protection by [...]

  • Page 32

    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. Main PCB failure Check Point 1-1 : Reset Power supp[...]

  • Page 33

    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 connector is removed. Check erroneous connection. Check[...]

  • Page 34

    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 terminal of IPM in Main PCB is "L"(=0V) wh[...]

  • Page 35

    T rouble 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 V alue (k ) T emperature OK OK OK OK 41.33 1.956 3.430 4.639 6.375 8.909 Resistance V alue (k ) T emperature Discharge temp. sensor error Outdoor unit [...]

  • Page 36

    T rouble shooting 1 1 OUTDOOR UNIT Error Method: Detective Actuators: Detective details: Forecast of Cause : Check Point 2 : 6.129 9.775 12.47 16.05 20.80 27.21 Resistance V alue (k ) T emperature OK OK OK OK 3.947 0.61 15 0.8531 1.213 1.759 2.606 Resistance V alue (k ) T emperature Outdoor unit Heat Ex. liquid temp. sensor error Outdoor unit Main [...]

  • Page 37

    T rouble 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 V alue (k ) T emperature OK OK OK OK 20.56 6.408 7.978 10.00 12.26 16.04 Resistance V alue (k ) T emperature Outdoor temp. sensor error Outdoor unit Main PCB Outdoor temperature t[...]

  • Page 38

    T rouble 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. Check if the terminal connection is loose. Check erro[...]

  • Page 39

    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 restarts, if the same operation is repeated within 4[...]

  • Page 40

    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. Defective connection of electric components 2. Main [...]

  • Page 41

    T rouble 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 temperature rise 3. Main PCB failure 4. Outdoor unit fan mo[...]

  • Page 42

    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 room temperature, and either following condition is[...]

  • Page 43

    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 "discharge temperature 110degC during compressor operatio[...]

  • Page 44

    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, correct it by referring to Installation Manual or Dat[...]

  • Page 45

    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 removed connection cable. >>If abnormal conditio[...]

  • Page 46

    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 defective Are these Indoor Unit, Outdoor Unit, and R[...]

  • Page 47

    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) Pipe (Out) OK OK OK OK OK OK OK OK MPa MPa No Cooli[...]

  • Page 48

    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 noise is coming from Indoor unit. (Check and correct[...]

  • Page 49

    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 Main PCB, connection of Compressor,and winding re[...]

  • Page 50

    SERVICE P ARTS INFORMA TION 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 or infinite, replace Compressor . If the symptom[...]

  • Page 51

    SERVICE P ARTS INFORMA TION 3 Check Point 2 : Check Coil of EEV Y ellow - Red Orange - Red Blue - Red White - Red Read wire 46 4 Resistance value Check Point 1 : Check Connections Check Point 5 : Check Opening and Closing Operation of V alve Check Point 3 : Check V oltage from Main PCB. Check Point 4 : Check Noise at start up Pipe (In) Pipe (Out) H[...]

  • Page 52

    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 to below. Circuit-test "Vm" and "GN[...]

  • Page 53

    [...]

  • Page 54

    3 . APPENDING DATA R410A WALL MOUNTED type INVERTER[...]

  • Page 55

    03-01 3-1. FUNCTION SETTING Follow the instructions in the Local Setup Procedure, which is supplied with the remote control, in accordance with the installed condition. After the power is turned on, perform the Function Setting on the remote control. The settings may be selected between the following two: Function Number or Setting Value. Settings [...]

  • Page 56

    03-02 ( Factory setting) Setting Description Function Number Setting Value Yes No 40 00 01 1-4. Setting the Auto Restart Enable or disable automatic system restart after a power outage. *Auto restart is an emergency function such as for power failure etc. Do not start and stop the indoor unit by this function in normal operation. Be sure to operate[...]

  • Page 57

    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 ( ) until you find the code which operates the air condi[...]

  • Page 58

    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, be sure to turn off the power and turn it on again[...]

  • Page 59

    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 conditioner signal code. If no buttons are pressed within[...]

  • Page 60

    -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 3.26 3.48 25.0 49.84 30.0 39.78 35.0 31.92 40.0 2[...]

  • Page 61

    [...]

  • Page 62

    1116,Suenaga,Takatsu-ku,Kawasaki 213-8502,Japan Mar. 2012 Printed in Japan[...]