Fujitsu AOYG45LAT8 User Manual
  1. Manuals
  2. Brands
  3. Fujitsu Manuals
  4. Air Conditioner
  5. AOYG45LAT8
  6. User manual

Fujitsu AOYG45LAT8 User Manual

Hybrid flex inverter system
Hide thumbs Also See for AOYG45LAT8:
Table of Contents

Advertisement

Quick Links

See also: Service Manual
Hybrid Flex Inverter System
1 . DESCRIPTION OF EACH
CONTROL OPERATION

Advertisement

Table of Contents
loading

Related Manuals for Fujitsu AOYG45LAT8

Summary of Contents for Fujitsu AOYG45LAT8

  • Page 1 Hybrid Flex Inverter System 1 . DESCRIPTION OF EACH CONTROL OPERATION...
  • Page 2 ( Table 1 : Compressor speed range ) Minimum Maximum 90rps 18rps AOYG45LAT8 < Target high pressure control > The outdoor fan speed is controlled to keep the high pressure to the constant range for stabilizing the distribution performance. ( Fig. 1 : Target high pressure range)
  • Page 3 ( Table 2 : Compressor speed range ) Minimum Maximum 96rps AOYG45LAT8 18rps < Target high pressure control > When the start-up control finished, the outdoor unit starts the target high pressure control. The outdoor unit selects the target high pressure within the following range, it is decided by the highest request capacity from indoor units.
  • Page 4 1-3. AUTO CHANGEOVER OPERATION When the air conditioner is set to the Auto mode by remote controller, operation starts in the optimum mode from among the Heating, Cooling, Dry and Monitoring mode. During operation, the optimum mode is automatically switched in accordance with temperature changes. The temperature can be set between 18°C and 30°C in 1°C steps.
  • Page 5 AUTO CHANGEOVER operation flow chart START Setting temperature °C Room temp. Ts+2 Room temp. Ts -2 °C Middle zone Operation mode of COOLING (AUTO:DRY) HEATING OPERATION outdoor unit : Cooling or Dry? OPERATION Thermostat remains Thermostat remains Operation mode of in OFF state for 6 minutes or in OFF state for 6 minutes or outdoor unit : Heating?
  • Page 6 1-4. INDOOR FAN CONTROL 1. Fan speed ( Table 4 : Indoor fan speed table) ASYG07LJCA ASYG09LJCA Operation mode Fan Speed Operation mode Fan Speed Air flow mode Air flow mode Heating Heating 1050 1100 1000 1040 Quiet Quiet Cool Air Prevention Cool Air Prevention S-Lo S-Lo...
  • Page 7 AUYG09LVLA AUYG12LVLA Operation mode Fan Speed Operation mode Fan Speed Air flow mode Air flow mode Heating Heating Quiet Quiet Cool Air Prevention Cool Air Prevention S-Lo S-Lo Cooling / Fan Cooling / Fan Quiet Quiet *Soft Quiet Soft Quiet Auto X, J zone:440 Auto...
  • Page 8 ARYG12LLTA (Static pressure:25Pa) ARYG14LLTA (Static pressure:25Pa) Operation mode Fan Speed Operation mode Fan Speed Air flow mode Air flow mode Heating 1340 Heating 1560 1240 1400 1140 1240 Quiet 1030 Quiet 1030 S-Lo S-Lo 1340 1560 Cooling / Fan Cooling / Fan 1240 1400 1140...
  • Page 9 AGYG09LVCA Operation mode Fan Speed Air flow mode Upper & Lower Upper air flow mode air flow mode Heating Upper / Lower 1120/950 1230 Upper / Lower 1000/850 1090 Upper / Lower 860/730 Quiet 660/560 Upper / Lower Cool Air Prevention 660/560 Upper / Lower 660/560...
  • Page 10 2. FAN OPERATION 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. < All models > 3.
  • Page 11 5. HEATING OPERATION Switch the airflow [Auto], and the indoor fan motor will run according to a room temperature, as shown in Fig 10. 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, Hi, as shown in Table 4.
  • Page 12 < ABYG / AUYG type > < AGYG type > When Indoor When Indoor heat exchanger heat exchanger When Indoor When Indoor temperature rises temperature rises heat exchanger heat exchanger temperature drops temperature drops 42°C 42°C 37°C 34°C Me or setting Me+ or setting 39°C 39°C...
  • Page 13 1-5. LOUVER CONTROL For Compact Wall Mounted Type, Wall Mounted Type < ASYG07/09/12/18/24 > 1. VERTICAL LOUVER CONTROL (Function Range) Each time the button is pressed, the air direction range (Fig.12 : Virtical Air Direction Range) will change as follow: <Compact Wall Mounted Type>...
  • Page 14 For Compact Cassette Type < AUYG07/09/12/14/18 > (Function Range) Each time the button is pressed, the air direction range will change as follows: (Fig.14 : Air Direction Range) (Operation Range) Cooling / Heating / Dry / Fan mode : Use the air direction adjustments within the ranges shown above. The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected.
  • Page 15 ABYG14/18 > For Floor / Ceiling Type < (Function Range) Each time the button is pressed, the air direction range will change as follows: ( Air Direction Range : Floor installation) ( Air Direction Range : Ceiling installation) (Operation Range) Cooling / Heating / Dry / Fan mode : Use the air direction adjustments within the ranges shown above.
  • Page 16 (Function Range) Each time the button is pressed, the air direction range will change as follows: (Air Direction Range : Ceiling installation) (Air Direction Range : Floor installation) (Operation Range) Cooling / Heating / Dry / Fan mode : Use the air direction adjustments within the ranges shown above. 2-2.
  • Page 17 For Floor Type < AGYG09/12/14 > (Function and Operation Range) Each time the button is pressed, the air direction range will change as follows: (Air Direction Range) Use the air direction adjustments within the ranges shown above. The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected. Cooling / Dry / Fan mode Horizontal flow Heating mode Downward flow...
  • Page 18 1-6. OUTDOOR FAN CONTROL 1. Fan speed table Table 5 shows the fan speed of the outdoor unit. ( Table 5 : Outdoor fan speed table) AOYG45LAT8 [rpm] Fan step Fan speed 2. Limit of fan speed range Fig.15 shows the limit of fan speed range changes by outdoor temperature.
  • Page 19 ( Table 6 : Compressor operation speed range ) Dry / Cooling Heating Minimum Maximum Minimum Maximum AOYG45LAT8 18rps 90rps 18rps 96rps 2. OPERATION SPEED CONTROL AT START-UP The compressor speed soon after the start-up is controlled as following. 2-1 Cooling and Dry mode start-up procces <...
  • Page 20 2-2 Heating mode start-up procces < Pattern 1 > If it does not meet the condition of pattern 2, the compressor will start at pattern 1. ( Fig.19 : Heating start-up pattern 1) (rps) Upper limit speed (sec) Elapsed time <...

  • Page 21: Wireless Remote Controller

    1-8. TIMER OPEARTION CONTROL 1-8-1 WIRELESS REMOTE CONTROLLER The table 7 shows the available timer setting based on the product model. Note! If the Central Remote Controller is installed, it is impossible to receive the timer setting from the wiress remote controller. ( Table 7 : Timer setting ) ON TIMER / OFF TIMER PROGRAM TIMER...
  • Page 22 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.
  • Page 23 1-8-2 WIRED REMOTE CONTROLLER The Table 8 shows the available timer setting based on the product model. ( Table 8 : Timer setting ) ON TIMER / OFF TIMER WEEKLY TIMER TEMPERATURE SET BACK TIMER ON TIMER / OFF TIMER Same to 1-8-1 ON / OFF TIMER and shown in those.
  • Page 24 1-9. ELECTRONIC EXPANSION VALVE CONTROL The most proper opening of the electronic expansion valve is calculated and controlled under the present operating condition based on the following values. The compressor frequency, the temperatures detected by the discharge temperature sensor, the indoor heat exchanger sensor, the outdoor heat exchanger sensor, and the outdoor temperature sensor.

  • Page 25: Safety Precautions

    1-10. CHECK RUN This operation allows the air conditioner to automatically check the status of the outdoor unit and check for wiring mistakes. Installation mistakes and positions where errors are occurring are shown by the outdoor unit display indicators. * The Check run time is used only as a guide.This time differs depending on the surrounding temperature conditions.
  • Page 26 RESTRICTIONS APPLICABLE WHEN PERFORMING THE CHECK RUN When the Check run starts, all indoor units connected to the outdoor unit will start to run automatically. During the Check run, you cannot check the operation of the indoor units separately. After the Check run, check the operation of the indoor units separately in normal operation.
  • Page 27 1-10-2. CHECK RUN CHECK ITEMS AND PROCEDURE Use the following procedure to perform the Check run. Check Item Procedure When an Error Occurs 1. Turn on 1.1 Check The power is on to the outdoor unit, When an error occurred power communi- connected branch boxes, and indoor units.
  • Page 28 : Wiring : Piping EXAMPLE1 When the number of piping is more than the number of wiring. Branch box 1 (Primary) Branch box 2 (Secondary) Branch box 3 (Secondary) INDOOR UNIT A INDOOR UNIT B INDOOR UNIT C INDOOR UNIT A INDOOR UNIT B INDOOR UNIT C INDOOR UNIT A...
  • Page 29 EXAMPLE3 When connection destination does not match. Branch box 1 (Primary) Branch box 2 (Secondary) Branch box 3 (Secondary) INDOOR UNIT A INDOOR UNIT B INDOOR UNIT C INDOOR UNIT A INDOOR UNIT B INDOOR UNIT C INDOOR UNIT A INDOOR UNIT B Indoor Indoor...
  • Page 30 1-11. TEST OPERATION CONTROL < Pre-test run check items > Before the test run, refer to the figure and check the following items. 1. Is check run performed? Test run doesn't operate if check run is not performed. After checking that the above items are all in order, refer to Test run method "to test run the unit. If there are problems, adjust immediately and recheck.
  • Page 31 Perform test run for refrigerant system. You can set “cooling test run” or “heating test run” with the push-button switch on the outdoor unit print circuit board. Test run setting method Function settings First 2 digits Last 2 digits MODE/EXIT MODE/EXIT : Press the “MODE/EXIT”...
  • Page 32 1-12. 4-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 4-way valve is switched in 3 minutes later after the compressor stopped. 1-13. AUTO RESTART When the power was interrupted by a power failure, etc.
  • Page 33 1-15. FORCED COOLING OPERATION Forced cooling operation is started when pressing MANUAL AUTO button for 10 seconds or more. During the forced cooling operation, it operates regardless of room temperature sensor. Operation LED and timer LED blink during the forced cooling operation. They blink for 1 second ON and 1 second OFF on both operation LED and timer LED (same as test operation).
  • Page 34 1-18. DEFROST OPERATION CONTROL 1. CONDITION OF STARTING THE DEFROST OPERATION The defrost operation starts as shown in the following Table 16, 17 and 18. ( Table 16 : Condition of normal defrost operation) Compressor integrating operation time Less than Over 35 minutes 35 minutes >...
  • Page 35 3. Defrost Flow Chart The defrosting shall proceed by the integrating operation time, outdoor temperature and outdoor heat exchanger temperature as follows. Outdoor unit operation mode : Heating mode Compressor continuous Compressor continuous operation time operation time Over 10 minutes Less than 10 minutes Compressor integrating operation time :...
  • Page 36 1-19. OFF DEFROST OPERATION 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, the outdoor unit will allow the heat exchanger to defrost, and then stop. 1.
  • Page 37 1-20. OIL RECOVERY OPERATION Outdoor unit operates by cooling refrigerant cycle for recover the refrigerant oil to the compressor 1. Cooling oil recovery operation < Start condition > It operates forcibly from the compressor integrating time in Cooling and Dry mode. Condition of the oil recovery operates after 1 hour (1).
  • Page 38 1-21. FRESH AIR CONTROL( For AU / AR type) The fan motor for Fresh Air is operated in synchronization with the indoor fan operation as shown in Figure 22. (Fig. 22 : Fresh Air control) Operation Fan motor (Indoor unit) Stop Operation Fan motor...
  • Page 39 1-23. DRAIN PUMP OPERATION During Cooling / Dry mode 1. When the compressor starts, the drain pump starts simultaneously. 2. The drain pump operates continuously for 3 minutes after the compressor is turned off. 3. When the compressor stops by the "Anti- freezing protection", the drain pump is turned off in 1 hour after the compressor stops.
  • Page 40 1-24. ECONOMY OPERATION ECONOMY OPERATION functions by pressing ECONOMY button on the remote controller or Home controller, it is almost the same operation as below settings. ( Table 20 : Detail of ECONOMY OPERATION) Ts : Setting temperature Outdoor unit Indoor fan Wired remote Operation...
  • Page 41 1-25. ENERGY SAVING PEAK CUT FUNCTION The current value is limited to reduce the power consumption by external input terminal 3(CN933). When this function, "CURRENT OVERLOAD OPERATION", "ECONOMY OPERATION" outdoor unit will operate by lowest current of them. and "LOW NOISE OPERATION" are effective, the (Table 21 : Outline of ENERGY SAVING PEAK CUT FUNCTION) MODE1 MODE2...
  • Page 42 1-27. VARIOUS PROTECTIONS 1. DISCHARGE GAS TEMPERATURE OVER RISE PREVENTION CONTROL During the compressor in operation, the discharge thermistior will detect discharge gas temperature. The discharge gas temperature is controlled in the following protections. Discharge temperature protection 1 <Start condition> Discharge temperature becomes more than 105°C.
  • Page 43 3. HEAT SINK TEMPERATURE PROTECTION CONTROL During the compressor in operation, heat sink temperature thermistor (Built-in IPM) will detect heatsink temperature. It is controlled in the following protections. Heat sink protection 1 and 2 operates at the same time, if each conditions are met. Heatsink temperature protection 1 (Fig.

  • Page 44: Current Release Control

    4. CURRENT RELEASE CONTROL The compressor speed is controlled so that the outdoor unit input current does not exceeds the current limit value is decided by the outdoor temperature. When "ECONOMY OPERATION" or "PEAK CUT OPERATION" are effective, the outdoor unit will operate by lowest current. When the outdoor unit input current reaches to the control value, the compressor speed -1rps every 1 second till the release value.

  • Page 45: High Pressure Protection Control

    5 . HIGH PRESSURE PROTECTION CONTROL During the compressor in operation, When the discharge high pressure sensor will detect the high pressure sensor. The high pressure is controlled in the following protections. HIGH PRESSURE PROTECTION 1 During Cooling / Dry mode <Start and Release condition>...
  • Page 46 HIGH PRESSURE PROTECTION 2 ( Fig. 28 : High pressure protection 2 ) <Start condition> High High pressure sensor detects more than 4.10MPa. Compressor stop pressure 4.10MPa <Operation> Hold Compressor is stopped. 3.00MPa <Release condition> Release of protection When the high pressure sensor detects lower than 3.00MPa and after 3 minutes ST, the compressor restarts.
  • Page 47 LOW PRESSURE PROTECTION 3 (For Cooling / Dry mode) <Start condition> (Fig. 31 : Low pressure protection 3) During the compressor in operation, low pressure sensor detects lower than 0.15MPa. Release protection 3 pressure <Operation> 0.17MPa Main EEV of Branch Box opens untill the release condition. Hold <Release condition>...
  • Page 48 Hybrid Flex Inverter System 2. TROUBLE SHOOTING...

  • Page 49: Error Code

    2. TROUBLESHOOTING 2-1 Service maintenance for Hybrid Flex Inverter System 2-1-1 Features Enhanced installability and maintenance. <Product> 1) Multi-room --> Many pipes and lines 2) Branch box --> Pipes and line 3) Increased power supply points --> Outdoor units and branch boxes <Functions>...
  • Page 50 2) Hybrid Flex Inverter System, error codes Error code display Defective component Appearance Object person Indoor units lamps, Indoor unit flashing of operation OPERATION (Green) and timer lamps. TIMER (Orange) and continuous ECONOMY (Green) flashing of economy - End user - Indoor unit error lamp.
  • Page 51 Case3 : Error at construction After performing the below-described work, repairs, inspections etc., always carry out the Check operation. Normal operation will not be possible without performing the Check operation. 1. Things to comfirm before starting the Check operation To ensure safety, check that the following work, inspections and operations have been completed. 1 Check that all work on the piping connecting the outdoor unit , indoor units and branch box has been completed 2 Check that all work on the wiring connecting the outdoor unit, indoor units and branch box...
  • Page 52 4. Error display : On, : Blinking, : Off) Error display Error item Contents 7 seg. display LED lamp Indeterminable The external or room temperature is outside the oper- ablerange. The air conditioner will temporarily permit normal operation, but the Check run should be carried out again at a later date when the temperatures are (blinking) within the operable ranges.
  • Page 53 2-2 NORMAL OPERATION 2-2-1 Normal status for Indoor Unit Display Indication type Indication Lamp Flashing Pattern Operation Operation LED Continuous lighting Timer Timer LED Continuous lighting 0.8 sec 21 sec Filter Sign Economy LED 1 cycle 0.5 sec 0.5 sec Operation LED Power Failure 0.5 sec...
  • Page 54 2-2-2 Normal status for Outdoor Unit Display Indication type 7 Segment LED Pattern Description Idling(stop) Blank Cooling Mode During Cooling Mode "C" OO "L" During Heating Mode Heating Mode "H" EA "T" Oil Recovery Operation During Oil Recovery Operation "O" IL "R" ECOVERY During Defrost Operation Defrost Operation "D"...
  • Page 55 2-3 ABNORMAL OPERATION 2-3-1 Error status for Indoor Unit Display Please refer the flashing pattern as follows. The OPERATION, TIMER, ECONOMY lamps operate as follows according to the error contents. Trouble Operation LED Timer LED Economy LED Error Contents shooting (GREEN) (ORANGE) (GREEN)
  • Page 56 Operation LED Timer LED Economy LED Trouble Error Contents shooting (GREEEN) (ORANGE) (GREEN) Discharge Thermistor Error 7 times flash 1 times flash Continuous flash Compressor Thermistor Error 7 times flash 2 times flash Continuous flash Heat Ex. Liquid Outlet 7 times flash 3 times flash Continuous flash Thermistor Error...

  • Page 57: Remote Controller Display

    2-3-2 Remote Controller Display << SIMPLE REMOTE CONTROLLER >> ERROR CODE DISPLAY Error code If an error occurs, the following display will be shown. “ “ will appear in the set room temperature display.) “ “ is displayed, immediately contact authorized service personnel.

  • Page 58: Table Of Contents

    2-3-3 Error Code List for Simple and Wired Remote Controller Error Trouble Error Trouble Error Contents Error Contents Code shooting Code shooting Serial Communication Error 1,37 ~ 39 Sub-Cool Heat Ex.Gas Inlet Thermistor Error Wired Remote Controller 23, 24 Sub-Cool Heat Ex.Gas Communication Error Outlet Thermistor Error Check Run Unfinished...

  • Page 59: Outdoor Unit Display

    2-3-4 Outdoor Unit Display LED display POWER POWER MODE LED : on POWER LED981 ERROR MODE ERROR LED : flashing LED981 LED982 (GREEN) (RED) 0.1sec 0.1sec LED961 LED962 ERROR LED982 Operation button MODE SELECT ENTER CHECK EXIT SW931 SW932 SW933 SW934 ERROR transition Annunciation...
  • Page 60 Indication type 7 Segment LED Pattern Description Idling(stop) Blank During Cooling mode Cooling mode "C" OO "L" During Heating mode Heating mode "H" EA "T" During Oil recovery operation. Oil recovery operation Refer to 01-36 page for operation. "O" IL "R" ECOVERY During Defrost operation.
  • Page 61 2-3-5 Error Code List for Outdoor Unit Display Error Trouble Error Trouble Error Contents Error Contents Code shooting Code shooting E. 1 1. 3 Serial communication error 1, 37 ~ 39 Sub cool heat EX. gas inlet thermistor error E. 8 2. 1 E.
  • Page 62 2-3-6 Error status for Branch Box Display When an error occurs, an error description displays in the LED (No.401 - 405). Flashing (number of flashing) Unlit Green Trouble Comment shooting LED401 LED402 LED403 LED404 LED405 Connected combination error Power frequency error EEPROM access error Model information error Serial communication error between...
  • Page 63 Error Indication Flashing Pattern Example : "Serial communication error between Indoor Unit B and branch box" at Secondary unit1 (LED401: 2times, LED402: 5times, LED403: Unlit, LED404: Lit, LED405: Unlit) 1 cycle 0.5s 0.5s 0.5s 0.5s + 1.0s LED401 LED402 0.5s 0.5s 0.5s 0.5s 0.5s 0.5s 0.5s 0.5s 0.5s 0.5s + 1.0s LED403 LED404...
  • Page 64 2-4 TROUBLE SHOOTING Indicate or Display: Trouble shooting 1 ALL UNIT Error Method: Outdoor Unit : Indoor Unit : Refer to Connection line and Serial signal error list Serial Communication Error (Page 13 ) Error Code (Serial Forward / Reverse Transfer Error) Detective Actuators: Detective details: When the branch box cannot properly receive the serial signal from...
  • Page 65 Case 2. When more than one indoor unit error (2unit or 3 unit) Check the error display of each Branch Box (Primary or Secondary) Replace Controller PCB of Branch Box (Primary or Secondary) of error and execute the check operation again. Check the error display of Indoor unit Replace Controller PCB of indoor unit of error Case 3.

  • Page 66: Outdoor Unit

    Connection Line (example) Indoor unit 2 Indoor unit 5 Indoor unit 8 Indoor unit 7 Indoor unit 6 Indoor unit 4 Indoor unit 1 Indoor unit 3 ② ⑤ ③ ⑧ ⑥ Ｇ Ｄ Ｅ Ａ Ｂ ⑦ ④ ① Ｈ...

  • Page 67: 2 Wired Remote Controller

    Indicate or Display: Trouble shooting 2 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 1 times Flash, Timer LED 2 Times Flash, Wired Remote Controller Economy LED Continuous Flash. Communication Error Error Code : 1 2 Detective Actuators: Detective details: Indoor unit controller PCB...

  • Page 68: Check Run Unfinished

    Indicate or Display: Trouble shooting 3 Outdoor Unit : E. 15. 6 INDOOR UNIT Error Method: Indoor Unit : Operation LED 1 times Flash, Timer LED 5 Times Flash, Economy LED Continuous Flash. Check run unfinished Error Code : 15 Detective Actuators: Detective details: When the operation command is input by remote controller without...

  • Page 69: Indoor Unit Capacity Error

    Indicate or Display: Trouble shooting 4 Outdoor Unit : E. 22. 1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 2 times Flash, Timer LED 2 Times Flash, Economy LED Continuous Flash. Indoor Unit Capacity Error Error Code : 22 Detective Actuators: Detective details: When the total capacity of indoor units is outside of range...

  • Page 70: Connected Combination Error

    Indicate or Display: Trouble shooting 5 Outdoor Unit : E.5 U.1 or E.J 2.U INDOOR UNIT Error Method: Indoor Unit : Operation LED 2 times Flash, Timer LED 3 Times Flash, Connected Combination Error Economy LED Continuous Flash. Error Code : 2 3 Detective Actuators: Detective details:...

  • Page 71: 4 Number Of Indoor Units Error

    Indicate or Display: Trouble shooting 6 Outdoor Unit : E. 24. 2 INDOOR UNIT Error Method: Indoor Unit : Operation LED 2 times Flash, Timer LED 4 Times Flash, Economy LED Continuous Flash. Number of Indoor Units Error Error Code : 24 Detective Actuators: Detective details:...

  • Page 72: Number Of Branch Boxes Error

    Trouble shooting 7 Indicate or Display: Outdoor Unit : E. 24. 3 Branch Box Error Method: Indoor Unit : Operation LED 2 times Flash, Timer LED 4 Times Flash, Number of Branch Boxes Error Economy LED Continuous Flash. Error Code : 24 Detective Actuators: Detective details:...

  • Page 73: Indoor Unit Model Information Error Eeprom Access Abnormal

    Indicate or Display: Trouble shooting 8 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 3 times Flash, Timer LED 2 Times Flash, Indoor Unit Model Information Error Economy LED Continuous Flash. EEPROM Access Abnormal Error Code : 3 2 Detective details:...

  • Page 74: Manual Auto Switch Error

    Indicate or Display: Trouble shooting 9 Outdoor Unit : No Display INDOOR UNIT Error Method: Indoor Unit : Operation LED 3 times Flash, Timer LED 2 Times Flash, Manual Auto Switch Error Economy LED Continuous Flash. Error Code : 3 5 Detective Actuators: Detective details: Indoor Unit Controller PCB...

  • Page 75: Indoor Room Thermistor Error

    Indicate or Display: Trouble shooting 10 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 4 times Flash, Timer LED 1 Times Flash, Indoor Room Thermistor Error Economy LED Continuous Flash. Error Code : 4 1 Detective details: Detective Actuators: Indoor Unit Controller PCB Circuit...

  • Page 76: Indoor Heat Ex. Thermistor Error

    Indicate or Display: Trouble shooting 11 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 4 times Flash, Timer LED 2 Times Flash, Economy LED Continuous Flash. Indoor Heat Ex. Thermistor Error Error Code : 4 2 Detective Actuators: Detective details: Indoor Unit Controller PCB...

  • Page 77: Indoor Unit Fan Motor Error

    Indicate or Display: Trouble shooting 12 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 5 times Flash, Timer LED 1 Times Flash, Economy LED Continuous Flash. Indoor Unit Fan Motor Error Error Code : 5 1 Detective details: Detective Actuators: When Indoor fan control is either phase control or DC control and rotation feed...

  • Page 78: Drainage Error

    Indicate or Display: Trouble shooting 13 Outdoor Unit : E.5 U.1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 5 times Flash, Timer LED 3 Times Flash, Economy LED Continuous Flash. Drainage Error Error Code : 5 3 Detective details: Detective Actuators: Indoor Unit Controller PCB Circuit When Float switch is ON for more than 3 minutes.
  • Page 79 Indicate or Display: Trouble shooting 14 Outdoor Unit : E. 62. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 6 times Flash, Timer LED 2 Times Flash, Outdoor Unit Model Information Error Economy LED Continuous Flash. Error Code : 62 Detective Actuators: Detective details:...
  • Page 80 Indicate or Display: Trouble shooting 15 Outdoor Unit : E. 63. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 6 times Flash, Timer LED 3 Times Flash, Inverter Error Economy LED Continuous Flash. Error Code : 63 Detective Actuators: Detective details: Inverter PCB Error information received from Inverter PCB...

  • Page 81: A.f Voltage Error

    Indicate or Display: Trouble shooting 16 Outdoor Unit : E. 64. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 6 times Flash, Timer LED 4 Times Flash Economy LED Continuous Flash. A.F Voltage Error Error Code : 64 Detective Actuators: Detective details: Outdoor Unit Main PCB...

  • Page 82: Discharge Thermistor Error E. A

    Indicate or Display: Trouble shooting 17 Outdoor Unit : E. 71. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 7 times Flash, Timer LED Times Flash, Discharge Thermistor Error Economy LED Continuous Flash. Error Code : 71 Detective Actuators: Detective details: Discharge temperature thermistor short detected Discharge temperature thermistor...

  • Page 83: Compressor Thermistor Error E. A

    Indicate or Display: Trouble shooting 18 Outdoor Unit : E. 72. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 7 times Flash, Timer LED 2 Times Flash, Compressor Thermistor Error Economy LED Continuous Flash. Error Code : 72 Detective Actuators: Detective details: Compressor temperature thermistor short detected...
  • Page 84 Indicate or Display: Trouble shooting 19 Outdoor Unit : E. 73. 3 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 7 times Flash, Timer LED 3 Times Flash, Outdoor Unit Heat Ex. Outlet Temp. Economy LED Continuous Flash. Thermistor Error Error Code : 73 Detective Actuators:...

  • Page 85: Outdoor Thermistor Error 20 E. J 2. U

    Indicate or Display: Trouble shooting 20 Outdoor Unit : E. 74. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 7 times Flash, Timer LED 4 Times Flash, Outdoor Thermistor Error Economy LED Continuous Flash. Error Code : 74 Detective Actuators: Detective details: Outdoor temperature thermistor short or open detected...

  • Page 86: Suction Gas Thermistor Error

    Indicate or Display: Trouble shooting 21 Outdoor Unit : E. 75. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 7 times Flash, Timer LED 5 Times Flash, Economy LED Continuous Flash. Suction Gas Thermistor Error Error Code : 75 Detective Actuators: Detective details: Suction gas temperature thermistor short or open detected...

  • Page 87: Heat Sink Thermistor Error

    Indicate or Display: Trouble shooting 22 Outdoor Unit : E. 77. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 7 times Flash, Timer LED 7 Times Flash, Heat Sink Thermistor Error Economy LED Continuous Flash. Error Code : 77 Detective Actuators: Detective details: Heat sink temperature thermistor (Built-in IPM) open/short detected...

  • Page 88: Sub-Cool Heat Ex. Gasinlet Thermistor Error

    Indicate or Display: Trouble shooting 23 Outdoor Unit : E. 82. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 8 times Flash, Timer LED 2 Times Flash, Sub-cool Heat EX. GasInlet Thermistor Error Economy LED Continuous Flash. Error Code : 82 Detective Actuators: Detective details:...

  • Page 89: Sub Cool Heat Ex. Gas Outlet Thermistor Error

    Indicate or Display: Trouble shooting 24 Outdoor Unit : E. 82. 2 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 8 times Flash, Timer LED 2 Times Flash, Sub-cool Heat Ex. Gas Outlet Economy LED Continuous Flash. Thermistor Error Error Code : 82 Detective Actuators:...
  • Page 90 Indicate or Display: Trouble shooting 25 Outdoor Unit : E. 83. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 8 times Flash, Timer LED 3 Times Flash, Heat Ex. Liquid Pipe Economy LED Continuous Flash. Thermistor Error Error Code : 83 Detective Actuators: Detective details:...

  • Page 91: Current Sensor Error

    Indicate or Display: Trouble shooting 26 Outdoor Unit : E. 84. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 8 times Flash, Timer LED 4 Times Flash, Current Sensor Error Economy LED Continuous Flash. Error Code : 84 Detective Actuators: Detective details : Judgment from value sensed by current...

  • Page 92: Discharge Pressure Sensor Error

    Indicate or Display: Trouble shooting 27 Outdoor Unit : E. 86. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 8 times Flash, Timer LED 6 Times Flash, Discharge Pressure Sensor Error Economy LED Continuous Flash. Error Code : 86 Detective Actuators: Detective details: When any of the following conditions is satisfied, a discharge pressure...

  • Page 93: Suction Pressure Sensor Error

    Indicate or Display: Trouble shooting 28 Outdoor Unit : E. 86. 3 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 8 times Flash, Timer LED 6 Times Flash, Suction Pressure Sensor Error Economy LED Continuous Flash. Error Code : 86 Detective details: Detective Actuators: When any of the following conditions is satisfied, a suction pressure...

  • Page 94: High Pressure Switch Error

    Indicate or Display: Trouble shooting 29 Outdoor Unit : E. 86. 4 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 8 times Flash, Timer LED 6 Times Flash, High Pressure Switch Error Economy LED Continuous Flash. Error Code : 86 Detective Actuators: Detective details: High pressure switch...

  • Page 95: Over Current Error

    Indicate or Display: Trouble shooting 30 Outdoor Unit : E. 94. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 4 Times Flash, Over Current Error Economy LED Continuous Flash. Error Code : 94 Detective details: Detective Actuators: Inverter PCB...

  • Page 96: Compressor Control Error

    Indicate or Display: Trouble shooting 31 Outdoor Unit : E. 95. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 5 Times Flash Compressor Control Error Economy LED Continuous Flash. Error Code : 95 Detective Actuators: Detective details: When "compressor location detection error"...

  • Page 97: Outdoor Unit Fan Motor Error

    Indicate or Display: Trouble shooting 32 Outdoor Unit : E. 97. 3 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 7 Times Flash, Outdoor Unit Fan Motor Error Economy LED Continuous Flash. Error Code : 97 Detective Actuators: Detective details:...

  • Page 98: 4-Way Valve Error

    Trouble shooting 33 Indicate or Display: Outdoor Unit : E. 99. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 9 times Flash, Timer LED 9 Times Flash 4-way valve error Economy LED Continuous Flash. Error Code : 99 Detective Actuators: Detective details: When the indoor heat exchanger temperature is compared with...

  • Page 99: Discharge Temp. Error

    Indicate or Display: Trouble shooting 34 Outdoor Unit : E. A1. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 10 times Flash, Timer LED 1 Times Flash, Discharge Temp. Error Economy LED Continuous Flash. Error Code : A1 Detective details: Detective Actuators: Discharge temperature thermistor...

  • Page 100: Compressor Temp. Error

    Indicate or Display: Trouble shooting 35 Outdoor Unit : E. A3. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 10 times Flash, Timer LED 3 Times Flash, Compressor Temp. Error Economy LED Continuous Flash. Error Code : A3 Detective details: Detective Actuators: °C...

  • Page 101: Low Pressure Error

    Indicate or Display: Trouble shooting 36 Outdoor Unit : E. A5. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 10 times Flash, Timer LED 5 Times Flash, Low Pressure Error Economy LED Continuous Flash. Error Code : A5 Detective details: Detective Actuators: Suction pressure sensor...
  • Page 102 Indicate or Display: Trouble shooting 37 Branch Box Error Method: Outdoor Unit : E. 11. 3 Branch Box : LED401/ 402/ 403/ 404/ 405 Lit Connected combination error Indoor Unit : Operation LED 1times Flash, Timer LED 1times Flash, Economy LED Flashing (0.1s ON / 0.1s OFF) Error Code : 11 Detective Actuators:...
  • Page 103 Indicate or Display: Trouble shooting 38 Branch Box Error Method: Outdoor Unit : E. 11. 3 or E. 11. 4 Branch Box : LED401/ 402/ 403/ 404 Lit, LED405 Unlit Power frequency error 1 Indoor Unit : Operation LED 1times Flash, Timer LED 1times Flash, Economy LED Flashing (0.1s ON / 0.1s OFF) Error Code : 11...
  • Page 104 Indicate or Display: Trouble shooting 39 Branch Box Error Method: Outdoor Unit : E. 11. 3 or E. 11. 4 Branch Box : LED401/ 402/ 403 Lit, LED404 Unlit, LED405 Lit Power frequency error 2 Indoor Unit : Operation LED 1times Flash, Timer LED 1times Flash, Economy LED Flashing (0.1s ON / 0.1s OFF) Error Code : 11...
  • Page 105 Indicate or Display: Trouble shooting 40 Branch Box Error Method: Outdoor Unit : E. J2. U Branch Box : LED402 1time Flash, LED403/ 404/ 405 Unlit EEPROM access error Indoor Unit : Operation LED 13times Flash, Timer LED 2times Flash, Economy LED Flashing (0.1s ON / 0.1s OFF) Error Code : J2...
  • Page 106 Indicate or Display: Trouble shooting 41 Branch Box Error Method: Outdoor Unit : E. J2. U Branch Box : LED402 2times Flash, LED403/ 404/ 405 Unlit Model information error Indoor Unit : Operation LED 13times Flash, Timer LED 2times Flash, Economy LED Flashing (0.1s ON / 0.1s OFF) Error Code : J2...
  • Page 107 Indicate or Display: Trouble shooting 42 Branch Box Error Method: Outdoor Unit : E. J2. U Branch Box : LED402 6times Flash Indoor Unit A, B, C, liquid pipe (Indoor unit A): LED403 Lit, LED404/ 405 Unlit thermistor error (CN309 / 310) (Indoor unit B): LED403 Unlit, LED404 Lit, LED405 Unlit (Indoor unit C): LED403/ 404 Unlit, LED405 Lit Indoor Unit...
  • Page 108 Indicate or Display: Trouble shooting 43 Branch Box Error Method: Outdoor Unit : E. J2. U Branch Box : LED402 7times Flash Indoor Unit A, B, C, gas pipe (Indoor unit A): LED403 Lit, LED404/ 405 Unlit thermistor error (CN309 / 310) (Indoor unit B): LED403 Unlit, LED404 Lit, LED405 Unlit (Indoor unit C): LED403/ 404 Unlit, LED405 Lit Indoor Unit...
  • Page 109 Indicate or Display: Trouble shooting 44 Branch Box Error Method: Outdoor Unit : E. J2. U Branch Box : LED402 8times Flash Indoor Unit A, B, C, EEV control error (Indoor unit A): LED403 Lit, LED404/ 405 Unlit (CN305 / 306 / 307) (Indoor unit B): LED403 Unlit, LED404 Lit, LED405 Unlit (Indoor unit C): LED403/ 404 Unlit, LED405 Lit Indoor Unit...
  • Page 110 Check Point 4 : Check Noise at start up Turn on Power and check operation noise. If an abnormal noise does not show, replace Controller PCB. >> Check Point 5 : Check Opening and Closing Operation of Valve If it is open, When Valve is closed, it has no temp.
  • Page 111 Indicate or Display: Trouble shooting 45 Branch Box Error Method: Outdoor Unit : E. J2. U Branch Box : LED402 9times Flash, LED403/ 404/ 405 unlit Remote controller communication error Indoor Unit : Operation LED 13times Flash, Timer LED 2times Flash, Economy LED Flashing (0.1s ON / 0.1s OFF) Error Code : J2...
  • Page 112 Indicate or Display: Trouble shooting 46 Outdoor Unit : E. 6A. 1 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED 6 times Flash, Timer LED 10 Times Flash, Economy LED Continuous Flash. Display P.C.B. Communication Error Error Code : 6A Detective Actuators: Detective details: Outdoor unit Main PCB...

  • Page 113: Damper(Open/Close) Detection Limit Switch Error

    Indicate or Display: Trouble shooting 47 Outdoor Unit : E. 5U. 1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 5 times Flash, Timer LED 7 Times Flash, Damper(OPEN/CLOSE) Detection Economy LED Continuous Flash. Limit Switch Error Error Code : 57 Detective Actuators: Detective details:...

  • Page 114: Damper(Open/Close) Simultaneous Detection Limit Switch Error

    Indicate or Display: Trouble shooting 48 Outdoor Unit : E. 5U. 1 INDOOR UNIT Error Method: Indoor Unit : Operation LED 5 times Flash, Timer LED 7 Times Flash, Damper(OPEN/CLOSE) Simultaneous Economy LED Continuous Flash. Detection Limit Switch Error Error Code : 57 Detective Actuators: Detective details:...
  • Page 115 2-4 SERVICE PARTS INFORMATION SERVICE PARTS INFORMATION 1 Compressor Diagnosis method of Compressor (If outdoor unit LED displays error, refer to Trouble shooting ) Abnormal noise Stops soon after starting up Does not start up Is there open or loose connection Is there open or loose connection Check if vibration noise by cable?
  • Page 116 SERVICE PARTS INFORMATION 2 Compressor Check Point 1 : Check connection Check terminal connection of Compressor Check connection of Inverter PCB (Loose or incorrect wiring) (Loose or incorrect wiring) Inverter PCB TM400 (RED) TM401 (WHITE) TM402 (BLACK) U: RED compressor V: WHITE W: BLACK Check Point 2 : Check winding resistance...
  • Page 117 SERVICE PARTS INFORMATION 3 Outdoor Unit Electronic Expansion Valve (EEV1) Check Point 1 : Check Connections Check connection of connector (CN111) (Loose connector or open cable) EEV1 EEV2 Check Point 3 : Check Voltage from Controller PCB Check Point 2 : Check Coil of EEV Remove connector, check each winding resistance of Coil.
  • Page 118 SERVICE PARTS INFORMATION 4 Outdoor Unit Electronic Expansion Valve (EEV2) Check Point 1 : Check Connections Check connection of connector (CN112) (Loose connector or open cable) EEV1 EEV2 Check Point 2 : Check Coil of EEV Check Point 3 : Check Voltage from Controller PCB Remove connector, check each winding resistance of Coil.

  • Page 119: Service Parts Information

    SERVICE PARTS INFORMATION 5 Thermistor Check Point : Check Thermistor resistance value Remove connector and check Thermistor resistance value. Temperature Resistance Value [ k ] [°C] Thermistor A Thermistor B Thermistor C Thermistor D - 20 105.4 27.4 - 10 27.8 58.2 20.7...
  • Page 120 SERVICE PARTS INFORMATION 6 Discharge Pressure Sensor Suction Pressure Sensor 1. Discharge Pressure Sensor Check Point : Check Voltage from Main PCB With the connector connected to the PCB, measure the voltage between CN91:3-4 of the Main PCB. CN91 PRESSURE WHITE SENSOR BLACK...
  • Page 121 SERVICE PARTS INFORMATION 7 Outdoor Fan Motor Check Point 1 : Check rotation of Fan 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.
  • Page 122 SERVICE PARTS INFORMATION 8 Active Filter Module Check Point 1 : Check Open or Short-circuit and Diode Remove connector, check the open or short-circuit and the diode in the module Check the open or short-circuit Terminal Resistance value Tester(+) Tester(-) (+IN) ( IN) 360k...
  • Page 123 SERVICE PARTS SERVICE PARTS INFORMATION 9 INFORMATION 3 Diode Bridge (on the Inverter PCB) Check Point 1: Check OPEN / SHORT of Diode Bridge Remove each terminal, and check open / short of the Diode Bridge. (+),( - ) shows the terminal of the meter Resistance Value Read wire Pin ( + )
  • Page 124 Hybrid Flex Inverter System 3 . DISASSEMBLY PROCESS...
  • Page 135 16. Precautions for exchange of refrigerant-cycle-parts (1) During exchange the following parts shall be protected by wet rag and not make the allowable temperature or more. (2) Remove the heat insulation when there is the heat insulation near the welding place. Move and cool it when its detaching is difficult.

  • Page 136: Parts List

    [AOU48RLXFZ]/[AOBG45LAT8] [AOU48RLXFZ] ※f-2：SOLENOID ASSY C is applied only to the following models ※h-2：BELT HEATER ASSY is applied only to the following models [AOYG45LAT8]/ [AOHG45LAT8]/[ROG45LAT8]/[HOG45LAT8 ] [AOYG45LAT8]/ [AOHG45LAT8]/ [AOBG45LAT8] /[ROG45LAT8]/[HOG45LAT8] CHANGE BINDER LIST When changing parts, the following Binder Numbers shown in the picture must be replaced at the same location.
  • Page 137 Please remove the binders where necessary and replace the wires. 【HOG45LAT8】 ※We have removed the“Right panel”when taking the pictures. BIND (middle size) WIRE a(2 WIRES),b,c,d,e,i(2 WIRES), j(2 WIRES),k,l,m(2 WIRES) ⑩ BIND (middle size) WIRE f-1,g,h-2 (For AOBG45LAT8) WIRE f-2,g,h-2 (For AOYG45LAT8,AOHG45LAT8, ROG45LAT8,HOG45LAT8) ⑪ 03-13...

  • Page 138: Back View

      APPLICABLE MODEL ： ALL MODEL BACK VIEW   BIND (small size) WIRE c ① WIRE c ② BIND (small size) WIRE c ④ ③ ⑤ ⑥ BIND (small size) WIRE a ④ BIND (small size) WIRE a WIRE a (2 WIRES 1 CONNECTOR) WIRE b...

  • Page 139: Front View

    ⑰ ⑬ BIND (middle size) WIRE g ⑫ Don't slack wires. ⑫ WIRE f-1 (For AOU48RLXFZ,AOBG45LAT8) WIRE f-2 (For AOYG45LAT8,AOHG45LAT8, WIRE g ROG45LAT8,HOG45LAT8) BIND (middle size) WIRE k,l WIRE k BIND (middle size) WIRE a(2 WIRES),b,c,d,e,i(2 WIRES),j(2 WIRES),k,l,m(2 WIRES) WIRE l ⑱...
  • Page 140   APPLICABLE MODEL ： ALL MODEL Color:BROWN BIND (middle size) WIRE j with insulation WIRE j SIDE VIEW (2 WIRES 1 CONNECTOR) BIND (large size) WIRE h-1(2 WIRES) (For AOU48RLXFZ) WIRE h-2 (For AO*G45LAT8, ROG45LAT8,HOG45LAT8) Color:GRAY BIND (middle size) WIRE h-1(2 WIRES) (For AOU48RLXFZ) WIRE h-2 (For AO*G45LAT8, ROG45LAT8,HOG45LAT8)

Table of Contents