AirStage AO54UJ Service Manual
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AirStage AO54UJ Service Manual

J series vrf systems heat pump & cooling only type
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R410A
SERIES
Variable Refrigerant Flow System
Multi Air Conditioning System for Buildings
Model : AO54U
AO54J
HEAT PUMP & COOLING ONLY TYPE

SERVICE MANUAL

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Summary of Contents for AirStage AO54UJ

  • Page 1: Service Manual

    R410A SERIES Variable Refrigerant Flow System Multi Air Conditioning System for Buildings Model : AO54U AO54J HEAT PUMP & COOLING ONLY TYPE SERVICE MANUAL...
  • Page 2 CONTENTS 1. TEST RUN 1-1 PRE SETTING ......................01-01 1-1-1 CUSTOM CODE SETTING ................. 01-01 1-1-2 ADDRESS SETTING ................... 01-02 1-2 CHECK ITEM......................01-04 01-04 1-2-1 CHECK ITEM BEFORE TEST RUN ..............01-05 1-2-2 CHECK ITEM DURRING TEST RUN ..............1-3 TEST RUN METHOD....................
  • Page 3 4. OUTDOOR UNIT OPERATION CONTROL 4-1 OPERATION ......................04-01 4-1-1 INPUT / OUTPUT LIST ..................04-01 4-1-2 OPERATION / STOP CONDITION ..............04-02 4-2 COMPRESSOR OPERATION ................... 04-03 4-2-1 CAPACITY CONTROL ..................04-03 4-2-2 FREQUENCY CONTROL ..................04-03 4-3 FAN CONTROL ......................04-04 4-3-1 COOLING OPERATION ..................
  • Page 4 6. TROUBLE SHOOTING 6-1 INDOOR UNIT ......................06-01 6-1-1 NORMAL OPERATION DISPLAY ................ 06-01 6-1-2 ABNORMAL OPERATION DISPLAY ..............06-02 6-2 OUTDOOR UNIT ......................06-03 6-2-1 NORMAL OPERATION DISPLAY ................ 06-03 6-2-2 ABNORMAL OPERATION DISPLAY ..............06-04 6-3 REMOTE CONTROLLER ................... 06-05 6-3-1 WIRED REMOTE CONTROLLER ................

  • Page 5: Test Run

    R410A SERIES 1 . TEST RUN...

  • Page 6: Pre Setting

    1. TEST RUN 1-1 PRE SETTING 1-1-1 Custom code setting Code change Confusion Indoor unit Remote controller When changing the custom code, follow the instruction below Selecting the custom code prevents the indoor unit mix-up. (Up to 4 codes can be set) CUSTOM CODE SETTING FOR INDOOR UNIT AU TYPE AS 7-14 TYPE...

  • Page 7: Address Setting

    1-1-2 Address setting 1. Switching selection of address setting mode. (1) Press and hold 3 sec the "MANUAL AUTO" button (2) Press the ACL button, with pressing the of indoor unit. FAN CONTROL and SET TEMP (+) button. OPERATION OPERATION indicator Pi Pi Pi (Red)
  • Page 8 (5) Press the START/STOP button and make sure the (6) Indoor unit is displayed address number. beeping sound is heard. OPERATION TIMER (RED) (GREEN) continuously Flashing times of address numbers (Example) ADDRESS : 03 OPERATION PiPi LAMP (RED) PiPiPi TIMER LAMP (GREEN) 4.

  • Page 9: Check Item

    1-2 CHECK ITEM 1-2-1 Check Item Before Test Run Before test run, check the following items. 1 2 3 21 23 24 4 5 7 8 9 22 EV kit 6 17 50Hz 220 - 240V 3 16 19 20 14 15 16 19 20 23...
  • Page 10 1-2-2 Ceck Item Durring Test Run During the test run operation, check the following items. Outdoor unit EV kit 50Hz 220 - 240V Indoor unit Connection cable Wired remote controller When the power supply turn on,check the following items. Outdoor unit : LED 1 lights continuously. if LED flushing, it means error occurs ,check the eroor and solve the problem.
  • Page 11 Check item Checking Method Standard After operating the indoor unit, Check operation sound and Outdoor unit LED 3 :flushing the compressor operates? the LED of outdoor unit PCB. Cooling : Low pressure 0.7 to 0.9MPa (approx.) High pressure and low pressure Confirm with a pressure gauge Heating : High pressure 2.2 to 2.7 MPa (approx.) are normal?

  • Page 12: Test Run Method

    1-3 TEST RUN METHOD Supply power to the unit for 12 hours prior to the start of operation if the outdoor temperature is lower than 20 . The following is the procedure for the test run operation. 1-3-1 TEST RUN FROM OUTDOOR PC BOARD By setting DIP SW1-1 and SW1-2 on control PC board of outdoor unit, cooling test run or heating test run for all the indoor units in the same refrigerant system can be performed.

  • Page 13: Test Run Control

    3) Simple remote controller Stop the indoor and outdoor units. Push the remote controller button and button simultaneously for more than three seconds. The air conditioner will start to conduct a test run and " " will display on the temperature display. display.
  • Page 14 R410A SERIES 2 . FUNCTION OF PRINTED CIRCUIT BOARD...

  • Page 15: Pcb Layouts

    2. FUNCTION OF PRINTED CIRCUIT BOARD 2-1 PCB LAYOUTS 2-1-1 INDOOR UNIT CONTROL CIRCUIT BOARD Indoor unit Forbidden Forbidden SW 1 Room temp correct coefficient of heating 1 Room temp correct coefficient of heating 2 Room temp correct coefficient of cooling Forbidden SW 2 Forbidden...

  • Page 16: Indoor Unit

    (COMPACT WALL MOUNTED TYPE) Indoor unit Forbidden(Indoor unit fan speed switch 1) Forbidden(Indoor unit fan speed switch 2) SW 1 Forbidden(Indoor unit model code) Forbidden(Indoor unit model code) DIP SW Forbidden Forbidden SW 2 Auto restart validity / invalidity Forbidden JM 1 Jumper Wireless remote controller custom code...

  • Page 17: Outdoor Unit Control Circuit Board

    2-1-2 OUTDOOR UNIT CONTROL CIRCUIT BOARD Outdoor unit Test run (Cooling) Test run (Heating) SW 1 Pump down operation Forced oil recovery operation Silent operation mode Forbidden SW 2 Electric current selector switch 1 Electric current selector switch 2 Forbidden Forbidden SW 3 Forbidden...
  • Page 18 CN52 EX,IN-2 (GREEN) CN48 EX,IN-1 EX,OUT-2 (YELLOW) (BLUE) CN50 LED4 LED1 EX,OUT-1 LED5 LED2 (BLACK) LED6 LED3 CN49 Switching Transformer SW201 02-04...

  • Page 19: Wired, Simple Remote Controller

    2-1-3 WIRED, SIMPLE REMOTE CONTROLLER Wired,Simple remote controller Forbidden Forbidden Forbidden DIP SW Model setting Auto changeover setting Memory backup setting 1 Wired remote controller only Wired remote controller Front case (back side) DIP Switch Simple remote controller DIP switches 02-05...

  • Page 20: Microprocessor Function List

    2-2 MICROPROCESSOR FUNCTION LIST 2-2-1 INDOOR UNIT Compact Thin Large Compact Static INDOOR UNIT TYPE Cassette Cassette Cassette Duct Pressure Duct MODEL CODE 20 (22) AC IN TH. FUSE FAN CAPA FAN MOTOR D. PUMP CN10 SP-M (U,D) CN11 SP-M (R,L) CN12 HEATER CN13 DISPLAY CN14 E.E.VALVE...
  • Page 21 INDOOR UNIT TYPE Wall Mounted MODEL CODE TH. FUSE FAN MOTOR FAN MOTOR D. PUMP DIFFUSER/SP-M(U,D) SP-M(L/R) DISPLAY-1 DISPLAY-2 CN10 F. BACK CN11 TEST CN12 E.E.VALVE CN13 REMOCON CN14 FLOAT CN15 NETWORK CN16 R.-TH CN17 P-TH CN19 FLASH CN20 HEATER CN21 EX.
  • Page 22 INDOOR UNIT TYPE Compact Wall Mounted MODEL CODE POWER-PWB FAN F. BACK E. E. VALVE SP MOTOR(U,D) DISPLAY ROOM TH. PIPE TH. TEST FLASH CN10 EX. IN CN11 EX. OUT CN12 COMMUNICATION-PWB CN101 MAIN-PWB CN102 FAN MOTOR CN103 TRANS-P CN104 TRANS-S CN105 TH.

  • Page 23: Outdoor Unit

    2-2-2 OUTDOOR UNIT OUTDOOR UNIT TYPE AO54UJA AO54FJA AC IN FAN MOTOR1 S.V.1 S.V.2 4W.V.1 CRANK CASE HEATER BASE HEATER CN10 DC IN CN11 CN12 POWER RELAY CN13 ACTIVE P.M. CN14 IPM-DRIVE CN15 IPM-POWER1 CN16 IPM-POWER2 CN17 E.E.V.1 CN19 PRESSURE SWITCH Hi CN20 PRESSURE SWITCH Lo CN21...

  • Page 24: Function And Setting Of Each Switch

    2-3 FUNCTION AND SETTING OF EACH SWITCH 2-3-1 INDOOR UNIT (EXCEPT COMPACT WALL MOUNTED) (1) SW1 setting 1-1 DIP SW 1-1 and SW 1-2 setting forbidden Factory setting) SW1-1 SW1-2 1-2 Room temperature correct coefficient of heating. Decide the heating temperature correct coefficient value for room temperature thermistor. The overall room temperature increases when a larger coefficient value is used.
  • Page 25 2-4 Auto restart validity / invalidity. Control the auto restart function by turning this switch ON/OFF. Factory setting) AUTO RESTART SETTING SW2-4 Auto restart Invalidity Validity SW3 setting (Never change at the site) 3-1 Indoor unit fan speed switch This switch can select fan speed corresponding to each model. Cassette type AU20 AU30...
  • Page 26 (3) SW4 setting (Never change at the site) Indoor unit model code. This switch for changing the model code information of indoor unit PCB. INDOOR UNIT MODEL CODE MODEL CODE 25(24) 20(22) Type SW4-1 SW4-2 SW4-3 SW4-4 (4) SW5 setting 5-1 Wireless remote controller custom code switch Decid the custom code and restrict the type of infrared control signal, in order to prevent mixing of multiple indoor unit signals.
  • Page 27 Input Connector Indoor unit type Output Remarks Wall mounted CN21 CONTROL INPUT (OPERATION / STOP) CN27 Other types See 2-4-1 OPERATION DISPLAY CN22 (DC12V) for details ERROR DISPLAY CN23 All types (DC12V) INDOOR UNIT FAN CN24 STATUS DISPLY(DC12V) 02-13...
  • Page 28 SWITCH FUNCTION (COMPACT WALL MOUNTED TYPE) (1) SW1 setting (Never change at the site) 1-1 Fan speed setting switch The fan speed corresponding to each model is set with the switch. AS12 AS14 SW1-1 SW1-2 1-2 Model code setting switch The model code infomation corresponding to each model is provided with the switch.
  • Page 29 Connector Input Output Remarks CONTROL INPUT See 2-4-1 CN10 (OPERATION / STOP) Edge select for details OPERATION DISPLAY CN11 (DC12V) Wireless remote controller custom code switch Limit the type of infrared control signal which the indoor unit is controlled,in order to prevent misoperation of the unit due to the signal from other wirless remote controller.

  • Page 30: Outdoor Unit

    2-3-2 OUTDOOR UNIT (1) SW1 setting 1-1 Test run ( cooling & Heating ) All the indoor units connected to the outdoor unit can be test-operated by DIP switch setting. SELECTOR SWITCH FOR TEST RUN AND NORMAL OPERATION Factory setting) SW1-1 Test Run Remarks...
  • Page 31 2-3 Electric current selector switch 1 and 2 Upper limit of electric current is set by DIP switches 2-3 and 2-4 according to the current limit. Depending on the local power supply condition ,the breaker capacity can be selected in 4 steps. Factory setting) SW2-3 SW2-4...
  • Page 32 (6) SW6 setting 6-1 Pipe length switch SW setting can provide the operation to supplement the loss created by the pipe length. Factory setting) SW 6-1 SW 6-2 Recommended Range of L (m) PIPE LENGTH < = 7.5 < L Standard <...
  • Page 33 (8) SW8 setting 8-1 System type switch 3 and 4 Refrigerant system type can be set by DIP switches 8-1 and 8-2 Refrigerant system type Factory setting) SW8-1 SW8-2 System type VRF type Forbidden Forbidden Forbidden 8-2 SW 8-3 and 8-4 DIP SW 8-3 and 8-4 setting Forbidden SW8-3 SW8-4...

  • Page 34: Wired, Simple Remote Controller

    2-3-3 WIRED, SIMPLE REMOTE CONTROLLER 1 DIP SW1 setting forbidden DIP SW 1 2 DIP SW2 setting forbidden DIP SW 2 3 DIP SW3 setting forbidden DIP SW 3 4 Model setting Model setting Factory setting) Setting for Master/Slave Heat Pump model Cooling only model 5 Auto change over validity/invalidity Selecting auto change over validity/invalidity.

  • Page 35: External Input & Output

    2-4 EXTERNAL INPUT & OUTPUT 2-4-1 INDOOR UNIT (1) Control input (Operation/Stop) Indoor unit can be operated or stopped by using indoor unit PCB CN 21 (Wall mounted type) or CN27 (other types) 1 Input select Dip SW3-4 Input select Edge Pulse 2 In the case of "Edge"...

  • Page 36: Error Display

    (2) Output CONNECTOR OUT VOLTAGE STATUS Operation CN22 Stop Error CN23 Normal Fan run CN24 Fan stop 1 Operation display Indoor Operation unit CN 22 Operation Stop Indicator (WHITE) CN 22 2 Error display Indoor Error unit CN 23 Error Normal Indicator (WHITE)
  • Page 37 INDOOR UNIT(COMPACT WALL MOUNTED) (1) Control input (Operation/Stop) Indoor unit can be operated or stopped by using the connector CN10(RED) on indoor unit PCB. CONNECTOR INPUT SIGNAL COMMAND Operation CN10 (RED) Stop Ch 1 1 CN 10 (RED) Ch1 of CN10 Remote Controller...

  • Page 38: Outdoor Unit

    2-4-2 OUTDOOR UNIT (1) Input Heat and Cool switch (Heat pump type only) "Cooling priority" or "Heating priority" can be selected by this input. CONNECTOR INPUT STATUS REMARKS SIGNAL Remote Controller priority CN50 YELLOW External input priority Cooling priority CN50 need to CN52 GREEN be "ON".

  • Page 39: Inverter Control

    R410A SERIES 3 . INVERTER CONTROL...

  • Page 40: Inverter Control

    3. DC INVERTER CONTROL METHOD 3-1 INVERTER CONTROL 3-1-1 What is Inverter "Inverter" is the word used against "Converter", and it is the equipment to change DC to AC. Converter (Transformer) : To transform AC to DC (Rectifier) Inverter (Reverse Transformer) : To transform DC to AC As a generic term, the equipment that varies the output (Frequency or Voltage) is normally called as Inverter.

  • Page 41: Basic Circuit Of 3 Phase Inverter

    3-1-3 Basic Circuit of 3 phase Inverter time MOTOR U – V V – W By changing the ON-OFF cycle of the switch, the By changing the ON-OFF cycle of the switch, the rotation of the motor can be varied at the desired rotation of the motor can be varied at the desired W –...

  • Page 42: Circuit Discription

    3-2 CIRCUIT DISCRIPTION 3-2-1 Power supply circuit Varistor When an abnormal voltage is applied between the terminal of varistor (VA101), it shorts out and the circuit protection is carried out. Surge Absorber The surge absorber is a protection part as same as varistor for the electronic parts of outdoor unit against abnormal voltage such as lightening and it discharges the lightening surge.

  • Page 43: Choke Coil

    3-2-5 Choke Coil It conditions the current waveform and removes the noise. 3-2-6 Active Filter Module The input current is corrected by the microcomputer inside the module and the boosting chopper circuit, and the waveform with 100% of power factor is supplied to the output. It improves the power factor, and controls the power supply harmonic wave current.

  • Page 44: Dc Motor (Dc Inverter)

    3-2-9 DC Motor (DC Inverter) The rotor of DC compressor motor is made of permanent magnet, and it creates the revolving magnetic field by applying the voltage that is obtained by PAM control to the stator winding. And the pull and repulsion between the rotating magnetic field and the permanent magnet creates the force toward the same direction of the rotating magnetic field, and the rotor rotates.

  • Page 45: Operation Control

    R410A SERIES 4 . OUTDOOR UNIT OPERATION CONTROL...

  • Page 46: Operation

    4. OUTDOOR UNIT 4-1 OPERATION 4-1-1 Input / Output List Input / output parts or kind of detail Control range Discharge temperature sensor 1 Thermistor Measure range: -20 130 C Heat exchanger temperature sensor (Outlet) Thermistor Measure range: -20 80 C Heat exchanger temperature sensor (Middle) Thermistor Measure range: -20...

  • Page 47: Operation / Stop Condition

    4-1-2 OPERATION / STOP CONDITION Compressor operation condition When cooling requirement capacity or heating requirement capacity from either of the indoor units in the same refrigerant system is input, the compressor operates. But in the following case, the compressor operates in accordance with operation of each mode. During 3 minute restart prevention operation During deicing operation Failure (except for a part)

  • Page 48: Capacity Control

    4-2 COMPERESSOR OPERATION 4-2-1 Capacity control COOLING The rotation speed of the compressor is decided basing on the sum of the required refrigerant amount from the connected indoor units. HEATING The rotation speed of the compressor is decided by detecting the indoor heat exchanger mid temperature of the connected indoor units which is running on heating mode, so that the temperature reaches to the target temperature.

  • Page 49: Fan Control

    4-3 FAN CONTROL 4-3-1 Cooling Operation The fan speed selection during the cooling operation is performed by the condensing temperature (Heat exchanger mid temperature value TH When starting operation, it starts with Step 1 as follows. FAN TABLE FAN SPEED FAN SPEED CONDENSING TEMPERATURE NORMAL...

  • Page 50: Expansion Valve Control

    4-4 EXPANSION VALVE CONTROL (1) Initialization When power in turned on When the operation mode becomes off (2) Number of pulse at the stop operation 500 pulses (3) Operation Control During the operation, the electronic expansion valve detects the discharge gas temperature value and is automatically controlled by the feed back control so that it is kept at the target value.

  • Page 51: Special Operation

    4-6 SPECIAL OPERATION 4-6-1 Pressure Balance Control The pressure balance operation is performed to balance the pressure inside the refrigeration circuit during either from "Cooling" to "Heating or Stopping", or from "Hearting" to "Cooling or Stopping". It keeps open SV1 and SV2 for 3 minutes. 4-6-2 Oil Recovery Operation 1) Purpose of the operation The amount of refrigerant lubricant oil which has been transported to the indoor units and the connection pipe with the...

  • Page 52: Pre-Heat Operation

    4-6-4 Pre-Heat Operation When the unit is tuened off for long time during the winter season, it protects the start up failure by preventing the refrigerant from soaking into the oil in compressor. (1) Function The pre-heat operation is conducted by the voltage input of 30W to the compressor when 3 hours have passed since stopping compressor under the constant temperature.

  • Page 53: Protective Function

    4-7 PROTECTIVE FUNCTION 4-7-1 Protective Function List Protective Function List Protective Function Detect Parts Condition of Protection Detective Function Start: 108 C more. Compressor speed is decreased by 10Hz/120sec Discharge Tempe Thermistor Discharge Tempe Protection 1 Release: 93 C less (120sec) until it becomes lower than 108 C.

  • Page 54: Indoor Unit Operation

    R410A SERIES 5 . INDOOR UNIT OPERATION...

  • Page 55: Fan Control

    5. INDOOR UNIT OPERATION 5-1 FAN CONTROL 5-1-1 Fan Speed Setting Fan speed setting Press the FAN CONTROL button to set the fan speed. AUTO HIGH 5-1-2 "AUTO" Position Fan speed zone 1) COOLING OPERATION Hi zone The fan speed is determined automatically in accordance with the condition "(T (corrected room temperature) - T (corrected set temperature)"...

  • Page 56: Master Control

    5-2 MASTER CONTROL 5-2-1 Operation Mode Control Each operation mode is controlled as below. (1) Stop mode Indoor fan motor : OFF Electric expansion valve : Stop pulse Drain pump : Turns ON-OFF by the drain pump control function (2) Cool, Fan, Heat and Dry Mode Cool Heat Operates according to...

  • Page 57: Cool"Position

    5-2-3 "COOL" POSITION When using the cooling mode, set the temperature to a value lower than the current room temperature, otherwise the indoor unit will not start the cooling operation and only the fan will rotate. An example for COOLING TEMPERATURE CONTROL time chart (Manual setting) Ts + 0.5 C •...

  • Page 58: Louver Control

    5-3 LOUVER CONTROL 5-3-1 Adjusting The Direction of Air Circulation Instructions relating to heating ( ) are applicable only to heat pump type outdoor unit. Begin air conditioner operation before performing this procedure. MASTER CONTROL TEMP. TIME CONTROL SU MO TU WE TH FR SA Vertical Air Direction Adjustment This instructions are applicable to "CASSETTE TYPE", 3 6 9 12 15 18 21...

  • Page 59: Swing Operation

    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. During Cooling mode : Horizontal flow During Heating mode : Downward flow During AUTO mode operation, for the first minute after beginning operation, airflow will be horizontal the air direction cannot be adjusted during this period.
  • Page 60 To Stop Vertical airflow SWING Operation Air swing range (Cassete type) Press the VERTICAL SWING button for more than two seconds once and again. Air flow direction set Range of swing The remote controller's VERTICAL SWING lamp **and indoor unit's SWING indicator lamp (VERTICAL SWING) will go out. Airflow direction will return to the setting before swing was begun.

  • Page 61: Electronic Expansion Valve Control

    5-4 ELECTRONIC EXPANSION VALVE CONTROL (1) Initialization When the power is turned ON. When the power is OFF after the certain period. (2) Operation Control When indoor unit stopping Outdoor unit Condition EEV Condition Fully closed Cooling Fully closed Heating Slightly open When starting up (Cooling)

  • Page 62: Function

    5-6 FUNCTION 5-6-1 Energy save operation (1) About the ENERGY SAVE The energy conservation mode (ENERGY SAVE) raises the set temperature slightly in the cooling mode and lowers the set temperature in the heating mode, using a computer program to economically control the operation of the unit. If you press the ENERGY SAVE button while the air conditioner is on , it will change to the conservation mode.

  • Page 63: Auto Restart

    5-6-2 Auto Restart (1) The air conditioner restarts with the previous setting operation. (2) When the air conditioner restarts for heating operation, the "COLD AIR DISCHARGE PREVENTION FUNCTION" operates. 5-6-3 Icing Protection Control The icing of the indoor heat exchanger is prevented during the cooling and dry mode operation. (1) Starting Condition Heat exchanger middle temperature =<...

  • Page 64: Auxiliary Heater Control

    5-6-6 Auxiliary Heater Control It controls the output to the outside auxiliary heater of the indoor unit. Heating operation Room temperature < Setting temperature -3 C Heater output is ON During fan is in operation Room temperature > Setting temperature -1 C Heater output is OFF Cold air blowing protection is activated Room...

  • Page 65: Timer Control

    5-7 TIMER CONTROL 5-7-1 Wireless remote controller There are following 4 kinds of teimer modes are available. ON Timer OFF Timer PROGRAM Timer SLEEP Timer (1) ON / OFF TIMER Instructions relating to heating are applicable only to "HEAT & COOL MODEL" (Reverse Cycle). The timer functions cannot be used when this controller is used together with the Remote Controller (Wired type).

  • Page 66: Wired Remote Controller

    5-7-2 Wired Remote Controller UTB- ON / TIMER OFF / TIMER WEEKLY TIMER TEMPERATURE SET BACK TIMER (1) ON / OFF TIMER Instructions related to heating are applicable to "HEAT PUMP MODELS" and "HEAT RECOVERY MODELS"only. The timer function is not available depending on the model. To set the ON/OFF timer Press the TIMER MODE button to SU MO TU WE TH FR SA...
  • Page 67 (2) WEEKLY TIMER Instructions related to heating are applicable to "HEAT PUMP MODELS" and "HEAT RECOVERY MODELS" only. The timer function is not available depending on the model. To set the WEEKLY timer SU MO TU WE TH FR SA CLOCK ADJUST 3 6 9 12 15 18 21 Press the SET button for 2 seconds or...
  • Page 68 NOTES (1) PRECAUTIONS DURING WEEKLY TIMER SET UP (2) The earliest OFF time you can set is 30 minutes after the Setup is not possible in the following cases, so amend ON time. the time. (3) The OFF time can be carried over to the next day. (4) Even if the timer operation is set, the timer indicator lamp Be sure to set the ON time first, then the OFF time.
  • Page 69 (3) TEMPERATURE SET BACK TIMER Day setting Operating time setting SU MO TU WE TH FR SA 3 6 9 12 15 18 21 DAY OFF ex. When setting all days together Follow steps in "To set the WEEKLY timer " (p.4). The DELETE button is also used as described in the procedures for the weekly timer.
  • Page 70 R410A SERIES 6. TROUBLE SHOOTING...

  • Page 71: Indoor Unit

    6. TROUBLESHOOTING 6-1 INDOOR UNIT SWING LAMP (Orange) TIMER LAMP (Green) OPERATION LAMP (Red) MANUAL SWING TIMEROPERATION AUTO Operation can be checked by lighting and flashing of the LED (OPERATION, TIMER, SWING) of the grille display section. Perform judgment in accordance with the following. Test run When the air conditioner is operating in test run mode, the OPERATION and TIMER lamps flash slowly at the same time.

  • Page 72: Abnormal Operation Display

    6-1-2 ABNORMAL OPERATION DISPLAY INDOOR UNIT LED DISPLAY OPERATION TIMER SWING ERROR (UP/DOWN) TROUBLE CONTENTS SHOOTING LED (RED) LED (GREEN) LED (YELLOW) CODE E:06 INDOOR UNIT EEPROM ACCESS 0.1SEC. 4TIMES 1TIME Flashing Flashing ABNORMAL ON/OFF E:1F SERIAL Signal ABNORMAL 0.1SEC. 5TIMES 1TIME ON/OFF...

  • Page 73: Outdoor Unit

    6-2 OUT DOOR UNIT 6-2-1 NORMAL OPERATION DISPLAY Display Type LED 1 LED 2 LED 3 LED 4 LED 5 LED 6 Not operating Cooling operation Heating operation Compressor frequency 1 to 30Hz Compressor frequency 31 to 40Hz Compressor frequency 41 to 50Hz Compressor frequency 51 to 60Hz Compressor frequency 61 to 70Hz Compressor frequency 71 to 80Hz...

  • Page 74: Abnormal Operation Display

    6-2-2 ABNORMAL OPERATION DISPLAY TROUBL Display type LED 1 LED 2 LED 3 LED 4 LED 5 LED 6 SHOOTING Discharge temperature error High-pressure error Low-pressure error Pump down error (High-pressure error) (10) Pump down error (Discharge temperature error) (11) Pump down error (Other) Discharge temperature thermistor error Heat exchanger (Outlet) temperature thermistor error...

  • Page 75: Remote Controller

    6-3 REMOTE CONTROLLER 6-3-1 WIRED REMOTE CONTROLLER Display SU MO TU WE TH FR SA Remote controller address Error code SU MO TU WE TH FR SA Ex. Self-diagnosis CLOCK ADJUST DAY OFF CLOCK ADJUST DAY OFF ENERGY ENERGY SET BACK SET BACK SAVE SAVE...

  • Page 76: Trouble Shooting With Error Code

    6-4 ERROR CODE TROUBLE SHOOTING 6- 4-1 TROUBLE SHOOTING WITH ERROR CODE INDOOR UNIT TROUBLE SHOOTING Indicate or Display: Indicate or Display: Trouble shooting 1 Indoor Unit : Operation LED Flash Flash, Timer LED Times Blink Times Blink INDOOR UNIT INDOOR UNIT Error Method: Error Method:...
  • Page 77 Indicate or Display: Indicate or Display: Trouble shooting 2 Indoor Unit : Operation LED Flash Flash, Timer LED Times Blink Times Blink INDOOR UNIT INDOOR UNIT Error Method: Error Method: Swing LED Times Blink Times Blink Outdoor Unit : LED1 Flash, LED6 1 8TIMES Blink (Indoor Unit address)
  • Page 78 Indicate or Display: Indicate or Display: Trouble shooting 3 Indoor Unit : Operation LED Flash Flash, Timer LED Flash Flash INDOOR UNIT INDOOR UNIT Error Method: Error Method: Swing LED Outdoor Unit : LED1 Flash, LED6 1 8TIMES Blink (Indoor Unit address) MODEL INFORMATION ABNORMAL ERROR CODE : E:02...
  • Page 79 Indicate or Display: Indicate or Display: Trouble shooting 4 Indoor Unit : Operation LED Flash Flash, Timer LED Flash Flash INDOOR UNIT INDOOR UNIT Error Method: Error Method: Swing LED Flash Flash POWER SUPPLY FREQUENCY Outdoor Unit : LED1 Flash, LED6 1 8TIMES Blink (Indoor Unit address) ABNORMAL...
  • Page 80 Indicate or Display: Indicate or Display: Trouble shooting 5 Indoor Unit : Operation LED 2 Times Blink 2 Times Blink, Timer LED Flash Flash INDOOR UNIT INDOOR UNIT Error Method: Error Method: Swing LED ROOM TEMPERATURE THERMISTOR Outdoor Unit : LED1 Flash, LED6...
  • Page 81 Indicate or Display: Indicate or Display: Trouble shooting 6 Indoor Unit : Operation LED3 Times Blink 3 Times Blink, Timer LED Flash Flash INDOOR UNIT INDOOR UNIT Error Method: Error Method: Swing LED 1 time Blink 1 time Blink HEAT EXCHANGER (Inlet) Outdoor Unit : LED1 Flash,...
  • Page 82 Indicate or Display: Indicate or Display: Trouble shooting 7 Indoor Unit : Operation LED3 Times Blink 3 Times Blink, Timer LED Flash Flash INDOOR UNIT INDOOR UNIT Error Method: Error Method: Swing LED 2 time Blink 2 time Blink HEAT EXCHANGER (Outlet) Outdoor Unit : LED1 Flash,...
  • Page 83 Indicate or Display: Indicate or Display: Trouble shooting 8 Indoor Unit : Operation LED4 Times Blink 4 Times Blink, Timer LED Flash Flash INDOOR UNIT INDOOR UNIT Error Method: Error Method: Swing LED Outdoor Unit : LED1 Flash, LED6 DRAIN ABNORMAL 1 8TIMES Blink (Indoor Unit address) ERROR CODE : E:11...
  • Page 84 Indicate or Display: Indicate or Display: Trouble shooting 9 Indoor Unit : Operation LED 5 Times Blink 5 Times Blink, Timer LED Flash Flash INDOOR UNIT INDOOR UNIT Error Method: Error Method: Swing LED 1Time Blink 1Time Blink COMMUNICATION 1 ABNORMAL Outdoor Unit : LED1 Flash,...
  • Page 85 Indicate or Display: Indicate or Display: Trouble shooting 11 Indoor Unit : Operation LED 6 Times Blink 6 Times Blink, Timer LED Flash Flash INDOOR UNIT INDOOR UNIT Error Method: Error Method: Swing LED 4Time Blink 4Time Blink Outdoor Unit : LED1 Flash, LED6...
  • Page 86 OUTDOOR UNIT TROUBLE SHOOTING Indicate or Display: Indicate or Display: Trouble shooting 12 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink DISCHARGE TEMPERATURE Outdoor Unit :...
  • Page 87 Indicate or Display: Indicate or Display: Trouble shooting 13 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink 4 Times Outdoor Unit : LED1...
  • Page 88 Indicate or Display: Indicate or Display: Trouble shooting 14 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink Outdoor Unit : LED1 Flash...
  • Page 89 Indicate or Display: Indicate or Display: Trouble shooting 15 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink PUMP DOWN ABNORMAL Outdoor Unit : LED1...
  • Page 90 Indicate or Display: Indicate or Display: Trouble shooting 16 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink PUMP DOWN ABNORMAL Outdoor Unit : LED1...
  • Page 91 Indicate or Display: Indicate or Display: Trouble shooting 17 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink PUMP DOWN ABNORMAL Outdoor Unit : LED1...
  • Page 92 Indicate or Display: Indicate or Display: Trouble shooting 18 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink Discharge temperature Outdoor Unit : LED1...
  • Page 93 Indicate or Display: Indicate or Display: Trouble shooting 19 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink HEAT EXCHANGER TEMPERATURE Outdoor Unit : LED1...
  • Page 94 Indicate or Display: Indicate or Display: Trouble shooting 20 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink HEAT EXCHANGER TEMPERATURE Outdoor Unit : LED1...
  • Page 95 Indicate or Display: Indicate or Display: Trouble shooting 21 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink SUNCTION TEMPERATURE Outdoor Unit : LED1...
  • Page 96 Indicate or Display: Indicate or Display: Trouble shooting 22 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink OUTDOOR TEMPERATURE Outdoor Unit : LED1...
  • Page 97 Indicate or Display: Indicate or Display: Trouble shooting 23 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink Outdoor Unit : LED1 Flash...
  • Page 98 Indicate or Display: Indicate or Display: Trouble shooting 25 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink COMPRESSOR ROTOR LOCATION Outdoor Unit : LED1...
  • Page 99 Indicate or Display: Indicate or Display: Trouble shooting 26 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink Outdoor Unit : LED1 Flash...
  • Page 100 Indicate or Display: Indicate or Display: Trouble shooting 27 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink Outdoor Unit : LED1 Flash...
  • Page 101 Indicate or Display: Indicate or Display: Trouble shooting 28 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink Outdoor Unit : LED1 Flash...
  • Page 102 Indicate or Display: Indicate or Display: Trouble shooting 29 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink POWER SOUCE FREQUENCY Outdoor Unit : LED1...
  • Page 103 Indicate or Display: Indicate or Display: Trouble shooting 30 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink Outdoor Unit : LED1 Flash...
  • Page 104 Indicate or Display: Indicate or Display: Trouble shooting 31 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink Microcomputers Microcomputers COMMUNICATION Outdoor Unit :...
  • Page 105 Indicate or Display: Indicate or Display: Trouble shooting 32 Indoor Unit : Operation LED Flash Flash, Timer LED 3 Times Blink 3 Times Blink OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method: Swing LED 3 Times Blink 3 Times Blink NET WORK COOMUNICATION Outdoor Unit : LED1...
  • Page 106 Check Point : Check the wiring of connector / terminal Check Point : Check the wiring of connector / terminal Filter PCB Filter PCB Filter PCB Main Filter Signal PCB Signal PCB Signal PCB Communication Controller PCB Controller PCB Controller PCB OUTDOOR UNIT INDOOR UNIT INDOOR UNIT...

  • Page 107: Trouble Shooting With No Error Code

    6- 4-2 TROUBLE SHOOTING WITH NO ERROR CODE Forecast of Cause Forecast of Cause: 1. INDOOR UNIT NO POWER 1.Relation of installation construction 2. Relation of Indoor unit Filter PCB 1)Use of specified material 1)Wiring of connection cable 2)Check the power supply 2)Check power supply 3)Check Fuse of Indoor unit filter PCB 4)Check varistor of Indoor unit filter PCB...
  • Page 108 Forecast of Cause Forecast of Cause: 2. OUTDOOR UNIT NO POWER 1. Relation of installation construction 3. Check the parts around Filter PCB 1) Use of specified material 1) Check Power Relay 2) Check the power supply 2) Check Diode Bridge 3) Check Active Filter Module 2.
  • Page 109 3. INDOOR UNIT DOES NOT Forecast of Cause Forecast of Cause: 1.Check Remote controller / Address 4.Check EEV-KIT OPERATE 1)Check Wireless Remote controller 5.Relation of outdoor unit 2)Check Wired / Simple remote controller 1)Check EEV1 2.Check operating Condition 3. Relation of Indoor unit 1)Check Fan motor 2)Check each thermistor Check Point 1...
  • Page 110 Preliminary Check Preliminary Check : 4. NOT COOLING OR 1.Check Environmental cause 3.Check Indoor unit (Indoor unit Test operation) NOT HEATING 1)Check the Air Flow route 1)Check Indoor unit Fan / Fan motor 2)Check the relationship between 2)Check each Thermistor Capacity and Installation location 3)Check address setting 2.Check Outdoor unit...
  • Page 111 Estimated details Estimated details : 5. WATER LEAKAGE 1.Piping 1.Piping 2. Check Unit 2. Check Unit 1)Installation of insulation material 1)Installation of insulation material 1)Check inclination of the unit installation. 1)Check inclination of the unit installation. at each piping connection. at each piping connection.
  • Page 112 Estimated details Estimated details : 6. ABNORMAL SOUND IS 1.EV 1.EV – – KIT (Open excessively) KIT (Open excessively) 4. Normal Function 4. Normal Function HEARD FROM INDOOR UNIT 2.Installed piping 2.Installed piping 1) Refrigerant flow sound 1) Refrigerant flow sound 3.Indoor unit 3.Indoor unit 2) Defrost operation...

  • Page 113: Case Such As These Are Normal

    6-5 CASES SUCH AS THESE ARE NORMAL Operation not trouble From the standpoint of control, the following operations are incorporated for air conditioner operation and protection. They do not indicate trouble. Operation Description Indoor unit Remote indication Indicates that the power came on normally when power The red and green lamps flash was applied (at power failure recovery).
  • Page 114 6- 6 SERVICE PARTS INFORMATION SERVICE PARTS INFORMATION 1 SERVICE PARTS INFORMATION 1 9705256019 (Filter PCB) P/No. Current trance Check Point 1: Check connector of CT Check Point 1: Check connector of CT Check Point 2: Resistance value of CT Check Point 2: Resistance value of CT Check the connection of connector CN202,CN11 Check the terminal resistance of CT...
  • Page 115 SERVICE SERVICE PARTS PARTS INFORMATION 2 INFORMATION 2 9353611017 (Main Relay) P/No. Main Relay Check Point 1: Check the circuit connection and Coil in relay Check Point 1: Check the circuit connection and Coil in relay Check the connection of each terminal 120 (About) Resistance Value : PWB ASSY...
  • Page 116 SERVICE PARTS INFORMATION 4 9707278019 (Active Filter Module) P/No. Active filter module Check Point 1 : Check Open or Short-circuit and Diode (D1) Remove connector, check the open or short-circuit and the diode in the module Check the open or short-circuit Terminal Resistance value Tester(+)
  • Page 117 SERVICE SERVICE PARTS PARTS INFORMATION 5 INFORMATION 5 9705253018 (TR ASSY) P/No. TR ASSY Check Point 1: Check Circuit connection Check Point 1: Check Circuit connection Check the connection to each terminal. TR ASSY LOCATION DETECTION IPM Drive (3)ORANGE Lo (2)RED GND (1)BROWN DC+5.0V OUTDOOR FAN SIDE...
  • Page 118 SERVICE SERVICE PARTS PARTS INFORMATION 6 INFORMATION 6 9372716014 (Compressor ASSY) P/No. Compressor ASSY Check Point 1: Check Circuit connection Check Point 1: Check Circuit connection Check the connection to each terminal. Terminal cover opened Terminal cover opened TR PWB ASSY (RED) (RED) (WHITE)
  • Page 119 SERVICE SERVICE PARTS INFORMATION 7 PARTS INFORMATION 7 9601705017 (Motor induct ) P/No. FAN Motor Outdoor unit Check Point 1: Check Circuit connection Check wiring of connectors between Control PCB CN2 - Joint Connector - Fan motor Check FAN capacitor connect (Yellow / Black) DC12V Control signal Check Point 2: Check Open / Short of circuit...
  • Page 120 9900187019 (Hi pressure SW) P/No. SERVICE SERVICE PARTS PARTS INFORMATION 8 INFORMATION 8 9900187019 (Lo pressure SW) Pressure SW P/No. Check Point 1: Check Circuit connection Check Point 1: Check Circuit connection Check the connects CN19, CN20, and each terminal connection at SW side (inside the insulation material) Remove the connector and check continuity between terminals.
  • Page 121 9900188016 (VALVE) P/No. SERVICE SERVICE PARTS INFORMATION 9 PARTS INFORMATION 9 9900189020 (Solenoid COIL 1) P/No. 9900189013 (Solenoid COIL 2) P/No. Check Point 1: Check Circuit connection Check Point 1: Check Circuit connection Check Connectors CN4,CN5. Also check if cable is broken. AC LINE CN1-3 Check Point 2: Check Solenoid coil...
  • Page 122 9900170028 (VALVE) P/No. SEVICE SEVICE PARTS PARTS INFORMATION 10 INFORMATION 10 9900190019 (Electric COIL) P/No. EEV1 Outdoor unit Check Point 1: Check Circuit connection Check Point 1: Check Circuit connection Check Point 2: Check Solenoid coil Check Point 2: Check Solenoid coil Remove CN17 and check the resistance value of coil in the Check wiring of connector CN17.
  • Page 123 PARTS PARTS INFORMATION 11 INFORMATION 11 Option Parts. UTR-EV2, UTR-EV3 Check Point 1: Check Circuit connection Check Point 1: Check Circuit connection Check Point 2: Check Solenoid Coil Check Point 2: Check Solenoid Coil Remove CN14 and check the resistance value of coil in Check the connection of connector CN14 the motor Read Wire...
  • Page 124 9970035012 (4WAY VALVE) P/No. SEVICE SEVICE PARTS PARTS INFORMATION 12 INFORMATION 12 9900191016 (Solenoid COIL) 4WAY VALVE P/No. Check Point 1: Check Circuit connection Check Point 1: Check Circuit connection Check Point 2: Check Solenoid Coil Check Point 2: Check Solenoid Coil Check the connection of connector CN 5 Remove CN6 from PCB and check the resistance value of coil...
  • Page 125 SEVICE SEVICE PARTS INFORMATION 13 PARTS INFORMATION 13 Duct Type Indoor FAN Motor Check Point Check Point AR 7 , 9 AR 7 , 9 P/No. 9601722014 P/No. 9601722014 Check each winding resistance of Motor Read Wire Resistance value(20 Low(Blue) White - Red 764.3 8% Med(Violet)
  • Page 126 SEVICE SEVICE PARTS PARTS INFORMATION 14 INFORMATION 14 Cassette Type Indoor unit FAN Motor Check Point Check Point AU 7 , 9 AU 7 , 9 P/No. 9601040040 P/No. 9601040040 Check each winding resistance of Motor Read Wire Resistance value(20 Low(Blue) Med(Violet) White - Red...
  • Page 127 SEVICE SEVICE PARTS PARTS INFORMATION 15 INFORMATION 15 Wall Mounted type Indoor unit FAN Motor Check Point Check Point 9601172017 9601172017 AS 7 Check each winding resistance of Motor Read wire Resistance value (20 ) Black - Yellow 138 8% (Yellow) White - Yellow 136 8%...
  • Page 128 R410A SERIES 7 . INSTALLATION...

  • Page 129: Additional Charge

    7. INSTALLATION 7-1 ADDITIONAL CHARGE (1) Pipe length When adding refrigerant, follow the formula below. If the result of (1) is more than 0, add the refrigerant according to the result. If less or equal, there is no need to add the refrigerant. Liquid pipe (mm) 9.52 6.35...

  • Page 130: Examples Of System Setting

    7-2 EXAMPLES OF SYSTEM SETTING (1) Refrigerant system Outdoor unit EV kit Indoor Indoor Indoor Indoor Indoor Indoor Indoor Indoor unit unit unit unit unit unit unit unit System configuration Total capacity Example 1 2.15 2.15 2.15 2.15 2.15 2.15 2.15 2.15 17.2...
  • Page 131 Pipe length a+b+c+k=40m 70m (actual pipe length) Difference in height between outdoor unit and indoor units maximum 30m. Difference in height between the highest and the lowest indoor unit maximum 5m. From outdoor unit to the first separation tube a=10m 60m (actual pipe length) From the first separation tube to the farthest indoor unit b+c+k=35m 40m (actual pipe length) a+b+c+d+e+f+g+h+i+j+k=90m...
  • Page 132 Outdoor unit EV kit Indoor Indoor Indoor Indoor unit unit unit unit System configuration Total capacity Example 1 AR12 AR12 AR18 AR22 3.50 3.50 5.30 6.00 18.3 Capacity(kW) Example 2 AR18 AR22 AR22 AR22 5.30 6.00 6.00 6.00 23.3 Capacity(kW) Total capacity of indoor unit (1 refrigerant system) Example1 : Total capacity = 18.3 22.8...

  • Page 133: Additional Refrigerant

    Selection of header Model name UTR-HD546U Additional charge Liquid pipe (mm) 9.52 6.35 Additional refrigerant 0.06 0.02 (kg/m) Liquid pipe length (m) Additional refrigerant Pipe length (0.06 x 20) + (0.02 x 50) - 1.8 = 0.4 (kg) 07-05...
  • Page 134 Outdoor unit EV kit Indoor Indoor Indoor Indoor Indoor Indoor unit unit unit unit unit unit System configuration Total capacity Example 1 AS12 AS18 AR9 3.50 5.40 2.80 2.80 2.80 2.80 20.1 Capacity (kW) Example 2 AS18 AS18 AR14 AR14 AR14 AR14 5.40 5.40 4.00...
  • Page 135 Selection of separation tube and header Model name UTR-BP54U UTR-BP54U UTR-HD546U Additional charge Liquid pipe (mm) 9.52 6.35 Additional refrigerant 0.06 0.02 (kg/m) Liquid pipe length (m) Additional refrigerant Pipe length (0.06 x 35) + (0.02 x 49) - 1.8 = 1.28 (kg) 07-07...

  • Page 136: Precautions For Installation

    7-3 PRECAUTIONS FOR INSTALLATION 1. Preparing pipes Diameter and thickness of copper pipes is shown below. (1) Use the designated size ( diameter & thickness ) of refrigerant pipes. Nominal Outer diameter Thickness (2) Those pipes purchased locally may contain dust diameter (inch) (mm) (mm)
  • Page 137 4. Tightness test (1) After completing all piping connection, always carry out an air tight test to check and confirm that there is no gas leakage. Charge the piping with nitrogen to within the sealing test pressure (4.15 MPa). After 24 hours, check that the pressure has not fallen.
  • Page 138 7. Precautions on Header installation Since necessary performance may not be obtained due to the mounting angle, header installation is specified as follows. (1) Connection pipe to each indoor unit shall be connected from the edge of header. (Connect the pipe in order of 1, 2, 3, ..as shown in the figure below.) Gas pipe Liquid pipe (2) Header shall be mounted horizontally.

  • Page 139: Pump Down Method

    7-4 PUMP DOWN METHOD 7-4-1 Procedure of the pump down Refer to the following pump down procedure. (1) Stop the indoor and outdoor units. (2) Close the liquid pipe valve using Hexagon wrench. (3) Select Dip SW 1-3 in the outdoor unit PC board from OFF to ON, so that the pump down operation starts automatically in 40 seconds.
  • Page 140 R410A SERIES 8 . REFRIGERANT CAUTION -R410A-...

  • Page 141: R410A Tools

    8-1 R410A TOOLS This air conditioner used R410A. TOOLS AND EQUIPMENT (R410A) For installation and servicing, it is necessary to prepare the tools and machines that are different from the previous Pressure control and Gas charging Circuit switching refrigerant. Safety charger Fig.4-13 Gauge manifold Mark shows the exclusive use for R410A.

  • Page 142: Precautions For Installation

    8-2 PRECAUTION FOR INSTALLATION Precaution for installation Pipe diameter, recommended material and wall thickness Nominal diameter 1/4" 3/8" 1/2" 5/8" 3/4" (in) Outside diameter 6.35 9.52 12.70 15.88 19.05 (mm) COPPER Material JIS H3300-C1220T-O or equivalent Wall thickness (mm) > 2) Design pressure 4.2MPa.

  • Page 143: Air Purge

    Be careful not to mix moisture and contamination into the pipe Moisture and contamination in the pipe is a cause of trouble. Air purge Always use a vacuum pump to purge air. Refrigerant charge Don't charge from the gas phase side. Do it always from the liquid phase side.

  • Page 144: Precautions For Servicing

    8-3 PRECAUTION FOR SERVICING Feature 1 Refrigerant oil is different from before. Precaution on Tools Refrigerant oil for Different point from New Refrigerant previous one Use the gauge manifold and charge hose Synthetic oil Absorbent character for New Refrigerant(HFC), which shall is high.

  • Page 145: New Refrigerant R410A

    8-4 NEW REFRIGERANT R410A 8-4-1 What is HFC ? Phase-out schedule of HCFC according to Montreal protocol 100% = (HCFC consumption of 1989) + (CFC consumption of 1989) x 2.8% total abolition only service use started control 0.5% 1996 2000 2004 2010 2015 2020...

  • Page 146: Refrigerant Characteristics

    Ozone Layer depleting mechanism sunbeam Ozone CFCl What is CFC and HCFC? CFC : Chloro-Fluoro-Carbon High ODP( ozone depletion potential ) chemical compound, including chlorine. (ODP:0.6-1.0) For example : R12 (for refrigerator and car air-conditioner) HCFC : Hydro-Chloro-Fluoro-Carbon Low ODP chemical compound, including chlorine and hydrogen. (ODP:0.02-01) For example : R22 (for air-conditioner) : Hydro-Fluoro-Carbon R134a (for Car air conditioner)

  • Page 147: Desighed Pressure Of R410A Refrigerant

    Summary of R407C and R410A characteristics R410A R407C Similar pressure as R22 Higher system performance (possible to design Advantage Near-Azeotropic large equipment) refrigerant 1.6 times higher Zeotropic refrigerant pressure than R22 Disadvantage (handle with care) (difficult to design against pressure resistance) 8-4-2 Desighed Pressure Of R410A Refrigerant Relation between R410A condensing temperature and saturated pressure.

  • Page 148: Heat Exchanger

    8-5 DEFFERENCE FROM CONVENTIONAL MODEL (R22) AND PRECAUTIONS • Use new synthetic oils such as ester because HFC series refrigerant has less solubility with mineral oils conventionally used for R22. • As these new synthetic oils are easily influenced by moisture and dusts, they must be treated more care- fully than the conventional lubricating oils.
  • Page 149 R410A SERIES 9 . APPENDING DATA1 (UNIT)

  • Page 150: Refrigerant Pipe System Diagram

    9. APPENDING 9-1 REFRIGERANT PIPE SYSTEM DIAGRAM MODEL : AO54UJ 09-01...
  • Page 151 MODEL : AO54FJ 09-02...

  • Page 152: Characteristics Of Sensors

    9-2 CHARACTERISTICS OF SENSORS 9-2-1 THERMISTOR Thermistor resistance values <Indoor unit side> 1) Room temperature thermistor (TH Room tempera- 12.5 17.5 22.5 27.5 ture ( C) Resistance value 33.6 29.5 25.9 22.8 20.2 17.9 15.8 14.1 12.5 11.2 10.0 (k ) Room tempera- 32.5 37.5...
  • Page 153 Thermistor resistance values <Outdoor unit side> 1) Outdoor heat exchanger outlet and middle thermistor (TH ) and suction temperature thermistor(TH Pipe tempera- -7.5 -5.0 -2.5 ture ( C) Resistance value 384.8 182.8 92.3 49.2 27.5 24.0 20.9 18.3 16.1 14.1 12.4 11.0 (k )

  • Page 154: Pressure Sensor

    9-2-2 Pressure Sensor (1) Pressure Switch 1 High Pressure Side Pressure Circuit OFF(Open) 4.2 0.1 Mpa Circuit ON (Short) 3.2 0.15 Mpa When the high pressure inside the system rises excessively the circuit is cut off and the abnormal protection functions. ( Normally the circuit is shorted ) (2) Pressure Switch 2 Low Pressure Side...

  • Page 155: Wiring Diagram

    9-3 WIRING DIAGRAM 9-3-1 INDOOR UNIT COMPACT DUCT TYPE 09-06...
  • Page 156 LOW STATIC PRESSURE DUCT TYPE 09-07...
  • Page 157 09-08...
  • Page 158 COMPACT CASSETTE TYPE 09-09...
  • Page 159 CASSETTE TYPE 09-10...
  • Page 160 09-11...
  • Page 161 COMPACT WALL MOUNTED TYPE 09-12...
  • Page 162 WALL MOUNTED TYPE 09-13...

  • Page 163: Outdoor Unit

    9-3-2 OUTDOOR UNIT MODEL : AO54UJ 09-14...
  • Page 164 MODEL : AO54FJ 09-15...

  • Page 165: Outdoor Internal Layout

    9-4 OUTDOOR INTERNAL LAYOUT OUTDOOR UNIT INTERNAL LAYOUT ACCUMULATOR HEAT EXCHANGER FAN MOTOR CHECK VALVE 3 WAY VALVE (LIQUID) 3WAY VALVE (GAS) COMPRESSOR PRESSURE SW (LOW) PRESSURE SW (HIGH) ACCUMULATOR EXPANSION VALVE SOLENOID VALVE 2 SOLENOID VALVE 1 4 WAY VALVE 09-16...
  • Page 166 INVERTER BOX LAYOUT MAIN CHOKE ELECTROLYTIC RELAY THERMISTOR COIL CAPACITOR CAPACITOR POWER DIODE BRIDGE ACTPM MAIN TRANSISTOR (POWER) (ACTIVE FILTER MODULE) OUTDOOR UNIT PCB LAYOUT FUSE 3.15A DIP-SW 1-8 09-17...

  • Page 167: Model Designation

    9-5 MODEL DESIGNATION Maximum Connectable TYPE CAPACITY MODEL NAME Indoor unit 15.2 kW AO 54UJAMR Heat pump type AO 54FJAMR 15.2 kW Cooling only type FUNCTION TYPE TYPE MARKET REGION MODEL CODE COMPRESSOR MODEL CHANGE SPECIAL METHOD CODE FUNCTION BLANK : 220-240V 50Hz MR : MULTI R TYPE AO : OUTDOOR UNIT J : SCROLL...

  • Page 168: Cooling Only

    8 types, 28models ranging from 2.15kW to 14.1kW. Type Cassette Duct Wall Cassette Duct Wall Capacity mounted (compact) (compact) mounted (compact) (kW) Model code 14.1 12.7 10.5 8.80 7.05 6.90 6.00 5.70 5.30 4.00 3.60 2.80 2.15 Type Model Refrierant type MODEL CHANGE CODE COOLING ONLY AO54FJAMR...
  • Page 169 SERIES 1116, Suenaga, Takatsu-ku, Kawasaki 213-8502, Japan Product specifications are subject to change without notice. " " is a worldwide trademark of FUJITSU GENERAL LIMITED. © Copyright 2002 Fujitsu General Limited. All rights reserved. Printed in Japan 2004.03.18...

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