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  • Page 3: Table Of Contents

    Table of Contents Page 1. Safety Precautions ..................1 In case of Accidents or Emergency Pre-Installation and Installation Operation and Maintenance 2. Specifications ....................3 Model Reference Electrical Wiring Diagrams 3. Product Features ................... 7 Operation Modes and Functions 4. Maintenance and Disassembly ..............12 Maintenance Disassembly 5.

  • Page 5: Safety Precautions

    Safety Precautions Contents In Case of Accidents or Emergency ..............2 Pre-Installation .......................2 Operation and Maintenance .................2...

  • Page 6: In Case Of Accidents Or Emergency

    To prevent personal injury, or property or unit damage, CAUTION adhere to all precautionary measures and instructions • • While unpacking be careful of sharp edges around outlined in this manual. Before servicing a unit, refer to this the unit as well as the edges of the fins on the con- service manual and its relevant sections.

  • Page 7: Specifications

    Specifications Contents Model Reference ....................4 Electrical Wiring Diagrams ..................5 Indoor Unit ....................5 Outdoor Unit ....................6...

  • Page 9: Electrical Wiring Diagrams

    2. Electrical Wiring Diagrams Indoor unit Abbreviation Paraphrase Yellow-Green Conductor Positive and Negative Ion Generator Capacitor PLASMA Electronic Dust Collector LIVE NEUTRAL Heater The Electric Heating Belt of Indoor Unit Indoor Room Temperature Coil Temperature of Indoor Heat Exchanger Middle PAC36337 ...

  • Page 10: Outdoor Unit

    Outdoor Unit Abbreviation Paraphrase 4-WAY Gas Valve Assembly/4-WAY VALVE AC-FAN Alternating Current FAN DC-FAN Direct Current FAN AC Current Detector COMP Compressor L-PRO Low Pressure Switch H-PRO High Pressure Switch Coil Temperature of Condenser Outdoor Ambient Temperature Compressor Suction Temperature Overload Relay PAC36337 ...

  • Page 11: Product Features

    Product Features Contents Operation Modes and Functions ................8 Abbreviation ....................8 Safety Features ....................8 Digital Display ....................8 Fan Mode ......................9 Cooling Mode ....................9 Auto-mode ....................9 Drying Mode ....................9 Forced Operation Function ................9 Auto-Restart Function ..................9 1.10 Refrigerant Leakage Detection ..............10 1.11 Self Clean(Optional) ..................10 1.12 Follow Me(Optional) ..................10 1.15 Information Inquiry ..................10...
  • Page 12 1. Operation Modes and Functions when the compressor is in operation. Digital Display Abbreviation Unit display functions Unit element abbreviations Abbreviation Element Indoor room temperature Coil temperature of evaporator Coil temperature of condenser Outdoor ambient temperature Set temperature Function Display Safety Features Temperature Set temperature value...
  • Page 13 Fan Mode on function is active. • After setting the mode, AC will run in auto mode if When fan mode is activated: the compressor keeps not running for certain time. • The outdoor fan and compressor are stopped. Drying mode •...
  • Page 14 compressor starts 20 seconds after the unit restarts. sequence. Pressing SWING will show the previous. • The following table shows information codes. The 1.10 Refrigerant Leakage Detection screen will display this code for two seconds, then the information for 25 seconds. •...
  • Page 15 Displayed Displayed code Explanation Meaning Additional Notes value Room temperature 1. All displayed temperatures use actual values. Indoor coil 2. All temperatures are temperature displayed in °C regardless -14—70 -14—70 of remote used. 3. If the actual value exceeds Outdoor coil the range, it will display temperature the maximum value or...

  • Page 16: Maintenance And Disassembly

    Maintenance and Disassembly Contents Maintenance ......................13 First Time Installation Check ................13 Refrigerant Recharge ...................15 Re-Installation .....................16 1.3.1 Indoor Unit ..................16 1.3.2 Outdoor Unit ................18 Disassembly ......................20 Indoor Unit ....................20 Outdoor Unit ....................36...

  • Page 17: Maintenance

    1. Maintenance First Time Installation Check To prevent air and moisture from affecting the air Air and moisture trapped in the refrigerant system affects conditioner’s performance, the indoor unit, as well as the the performance of the air conditioner by: pipes between the indoor and outdoor unit, must be be leak tested and evacuated.
  • Page 18 Procedure: (14.5 Psi) after 50 minutes, check for leakage. Tighten the flare nuts of the indoor and outdoor units, and confirm that both the 2- and 3-way valves • If the pressure successfully reaches -0.1 MPa are closed. (14.5 Psi), fully close the Handle Lo valve, then cease vacuum pump operations.

  • Page 19: Refrigerant Recharge

    Refrigerant Recharge Prior to recharging the refrigerant, confirm the additional amount of refrigerant required using the following table: Models Standard length Max. elevation Max. length Additional refrigerant PAC36337 5m (16.4ft) 10m (32.8ft) 25m (82ft) 30g/m (0.32oz/ft) Procedure: Close both 2- and 3-way valves. 3-way valves.

  • Page 20: Re-Installation

    Re-Installation 1.3.1 Indoor Unit Collecting the refrigerant into the outdoor unit Procedure: Confirm that the 2- and 3-way valves are opened. Close the 3-way valve so that the gauge rests between 0.3 MPa (43.5 Psi) and 0.5 MPa (72.5 Psi). Connect the charge hose with the push pin of Handle Lo to the 3-way valve’s gas service port.
  • Page 21 Air purging with vacuum pump Procedure: Psi) after 50 minutes, check for leakage. Tighten the flare nuts of the indoor and outdoor units, and confirm that both the 2- and 3-way valves • If the pressure successfully reaches -0.1 MPa are closed.

  • Page 22: Outdoor Unit

    1.3.2 Outdoor Unit Evacuation for the whole system Procedure: needle moves after turning off the vacuum pump. If Confirm that the 2- and 3-way valves are opened. the gauge needle moves backward, check whether Connect the vacuum pump to the 3-way valve’s there is gas leakage.
  • Page 23 Refrigerant charging Procedure: Close both 2- and 3-way valves. 3-way valves. Slightly connect the Handle Lo charge hose to the Operate the air conditioner in cooling mode to charge 3-way service port. the system with liquid refrigerant. Connect the charge hose to the valve at the bottom When the electronic scale displays the correct weight of the cylinder.

  • Page 24: Disassembly

    2. Disassembly Indoor unit Front Panel Procedure Illustration 1) Hold the front panel by the tabs on Front Panel the both sides and lift it (see CJ_AB_ INV_001). CJ_AB_INV_001 2) Push up the bottom of an air filter (step 1), and then pull it out downwards (step 2) (see CJ_AB_ INV_002).
  • Page 25 Procedure Illustration 3) Open the horizontal louver and push the hook towards left to open it (see CJ_AB_INV_003). Horizontal Louver Hook CJ_AB_INV_003 4) Bend the horizontal louver lightly by both hands to loosen the hooks, then remove the horizontal louver (see CJ_AB_INV_004).
  • Page 26 Procedure Illustration 5) Pry the electrical cover by a screw driver, and rotate it towars left, then remove it. (see CJ_AB_INV_005). CJ_AB_INV_005 6) Disconnect the connector for display board. (see CJ_AB_INV_006) . CJ_AB_INV_006 Note: This section is for reference only. Actual unit appearance may vary. ...
  • Page 27 Procedure Illustration 7) Slid the front panel side to side to release each axis (see CJ_AB_INV_007) CJ_AB_INV_007 8) Open the screw cap and then remove the 3 screws (see CJ_AB_INV_008). CJ_AB_INV_008 Note: This section is for reference only. Actual unit appearance may vary. ...
  • Page 28 Procedure Illustration 9) Release the hooks with hands. (see CJ_AB_INV_009) CJ_AB_INV_009 10) Release the 5 hooks in the back (see CJ_AB_INV_010). Hooks CJ_AB_INV_010 11) Pull out the panel frame while pushing the hook through a clearance between the panel frame and the heat exchanger.
  • Page 29 Procedure Illustration 12) Release the 5 hooks of the vertical blades, then pull the vertical blades Hooks rightward and remove it (see CJ_AB_ INV_012). CJ_AB_INV_012 13) Remove 1 screw of the display board. (see CJ_AB_INV_013). 14) Rotate the display board in the direction shown in the right picture.
  • Page 30 Electrical parts (Antistatic gloves must be worn.) Note: Remove the front panel (refer to 1. Front panel) before disassembling electrical parts. Procedure Illustration Ground Screws 1) Cut the ribbon by a shear, then pull out the coil temperature sensor (T2) (see CJ_AB_INV_014).
  • Page 31 Procedure Illustration 4) Remove the fixed devices of the connectors (see CJ_AB_INV_016). CJ_AB_INV_016 5) Disconnect the connectors of fan motor, the step motor and the T2 sensor (see CJ_AB_INV_017). CJ_AB_INV_017 6) Open the left side plate of electronic control box (see CJ_AB_INV_018). CJ_AB_INV_018 Note: This section is for reference only.
  • Page 32 Procedure Illustration 7) Open the two clips on the front of the electric box. (see CJ_AB_INV_019) CJ_AB_INV_019 8) Open the upper cover plate of electronic control box (see CJ_AB_ INV_020). CJ_AB_INV_020 Note: This section is for reference only. Actual unit appearance may vary. ...
  • Page 33 Procedure Illustration 9) Remove 1 screw and open the 2 clips along the direction indicated in right image (see CJ_AB_INV_021). CJ_AB_INV_021 10) Pull out the electrical main board along the direction indicated in right image to remove it (see CJ_AB_ INV_022).
  • Page 34 Evaporator Note: Remove the front panel and electrical parts (refer to 1. Front panel and 2. Electrical parts) before disassembling evaporator. Procedure Illustration 1) Disassemble the pipe holder located at the rear of the unit (see CJ_AB_INV_023). Pipe Holder CJ_AB_INV_023 Screw 2) Remove the 1 screws on the evaporator located at the fixed plate (see CJ_AB_...
  • Page 35 Procedure Illustration 3) Release the hook on the evaporator (see CJ_AB_INV_025). CJ_AB_INV_025 4) Remote the one screw on the evaporator located at the fixed plate (see CJ_AB_ INV_026). CJ_AB_INV_026 5) Pull out the evaporator (see CJ_AB_ INV_027). CJ_AB_INV_027 Note: This section is for reference only. Actual unit appearance may vary. ...
  • Page 36 Fan motor and fan Note: Remove the front panel, electrical parts and evaporator (refer to 1. Front panel, 2. Electrical parts, and 3. Evaporator). before disassembling fan motor and fan. Procedure Illustration 1) Remove the two screws and remove the fixing board of the fan motor (see CJ_AB_ INV_028).
  • Page 37 Procedure Illustration 3) Remove the fixing screw (see CJ_AB_ INV_030). 4) Pull out the fan motor and fan assembly from the side. Fixing Screw CJ_AB_INV_030 Note: This section is for reference only. Actual unit appearance may vary.  Page 33 ...
  • Page 38 Step motor Note: Remove the front panel and electrical parts (refer to 1. Front panel, 2. Electrical parts) before disassembling step motor. Procedure Illustration 1) Remove the two screws, then remove the stepping motor (see CJ_AB_INV_031). Stepping Motor CJ_AB_INV_031 Note: This section is for reference only. Actual unit appearance may vary. ...
  • Page 39 Drain Hose Procedure Illustration 1) Rotate the fixed wire clockwise indicated in right image (see CJ_AB_INV_032). CJ_AB_INV_032 2) Pull up the drain hose to remove it (see CJ_AB_INV_033). CJ_AB_INV_033 Note: This section is for reference only. Actual unit appearance may vary. ...

  • Page 40: Outdoor Unit

    Outdoor unit Panel Plate Procedure Illustration 1) Turn off the air conditioner and the power breaker. 2) Remove the screws of the big handle and then remove the big handle (2 screws) (see CJ_D30_INV_001). Big Handle CJ_D30_INV_001 Top Cover 3) Remove the screws of the top cover and then remove the top cover (4 screws).
  • Page 41 Procedure Illustration 4) Remove the screws of the front right panel and then remove the front right panel (2 screws) (see CJ_D30_ INV_003). Front Right Panel CJ_D30_INV_003 5) Remove the screws of the front panel and then remove the front panel (9 screws) (see CJ_D30_INV_004).
  • Page 42 Procedure Illustration 6) Remove the screws of water collecting cover and then remove the water collecting cover (2 screw) (see CJ_ D30_INV_005). Water Collecting Cover CJ_D30_INV_005 7) Remove the screws of the right panel and then remove the right panel (8 screws) (see CJ_D30_INV_006).
  • Page 43 Fan disassembly Note: Remove the panel plate and (refer to 1. Panel plate) before disassembling fan. Procedure Illustration 1) Remove the nut securing the fan with a spanner (see CJ_ODU_001). 2) Remove the fan. D-cut CJ_ODU_001 3) Disconnect the connectors for fan motor.
  • Page 44 Procedure Illustration 4) Remove the fixing screws of the fan motor (4 screws) (see CJ_ODU_003). 5) Remove the fan motor. Fan Motor CJ_ODU_003 Note: This section is for reference only. Actual unit appearance may vary.  Page 40 ...
  • Page 45 Electrical parts Note: Remove the air outlet grille(refer to 1. Panel plate) before disassembling electrical parts. Procedure Illustration 1) Remove the two screws fixed the electronic control board (see CJ_ ODU_007). Two Fixing Screws 2) Disconnect the wires connected to the compressor.
  • Page 46 WARNING: Recover refrigerant from the refrigerant circuit before remove the compressor. Note: Remove the panel plate, electrical parts, and fan assembly (refer to 1. Panel plate, 2. Electrical parts, and 3. Fan assembly) before disassembling sound blanket. Procedure Illustration 1) Remove the sound blanket (side and top) (see CJ_ODU_010).
  • Page 47 Four-way valve WARNING: Recover refrigerant from the refrigerant circuit before remove the four-way valve. Note: Remove the panel plate, electrical parts, and fan assembly (refer to 1. Panel plate, 2. Electrical parts, and 3. Fan assembly) before disassembling four-way valve. Procedure Illustration 1) Heat up the brazed parts and then detach...
  • Page 48 Compressor WARNING: Recover refrigerant from the refrigerant circuit before remove the compressor. Note: Remove the panel plate, electrical parts, and fan assembly (refer to 1. Panel plate, 2. Electrical parts, and 3. Fan assembly) before disassembling compressor. Procedure Illustration 1) Remove the flange nut of terminal cover and remove the termianal cover (see CJ_ ODU_011).
  • Page 49 Procedure Illustration 3) Remove the hex nuts and washers securing the compressor, located on the bottom plate (see CJ_ODU_013). CJ_ODU_013 Suction Pipe 4) Heat up the brazed parts and then remove the the discharge pipe and the suction Discharge Pipe pipe (see CJ_ODU_014).

  • Page 50: Troubleshooting

    Troubleshooting Contents Safety Caution .....................47 General Troubleshooting ..................47 Error Diagnosis and Troubleshooting Without Error Code .......48 Remote maintenance ...................48 Field maintenance ..................49 Quick Maintenance by Error Code ..............50 Troubleshooting by Error Code ................77 Common Check Procedures.................77 E1(EEPROM parameter error diagnosis and solution) ........78 E2 (Zero crossing detection error diagnosis and solution) ......79 E3 (Fan speed has been out of control diagnosis and solution) .....80 E5/E6 (Open circuit or short circuit of temperature sensor diagnosis and solution)

  • Page 51: Safety Caution

    1. Safety Caution WARNING Be sure to turn off all power supplies or disconnect all wires to avoid electric shock before troubleshooting. While checking indoor or outdoor PCB, please equip oneself with antistatic gloves or wrist strap to avoid damage to the board. 2.

  • Page 52: Error Diagnosis And Troubleshooting Without Error Code

    3. Error Diagnosis and Troubleshooting Without Error Code WARNING Be sure to turn off unit before any maintenance to prevent damage or injury. Remote maintenance SUGGESTION: When troubles occur, please check the following points with customers before field maintenance. Problem Solution Unit will not start Page 51-52...

  • Page 53: Field Maintenance

    Field maintenance Problem Solution Unit will not start Page 53-54 Compressor will not start but fans run Page 53-54 Compressor and condenser (outdoor) fan will not start Page 53-54 Evaporator (indoor) fan will not start Page 53-54 Condenser (Outdoor) fan will not start Page 53-54 Unit runs, but shortly stops Page 53-54...

  • Page 54: Quick Maintenance By Error Code

    4. Quick Maintenance by Error Code If you do not have the time to test whether specific parts are faulty, you can directly change the required parts according the error code. You can find the parts to replace by error code in the following table. Error Code Part requiring replacement...
  • Page 55 1.Remote Maintenance Electrical Circuit Refrigerant Circuit Possible causes of trouble Unit will not start ☆ ☆ ☆ ☆ The power switch is on but fans will not start ☆ ☆ ☆ The temperature on the display board cannot be set ☆...
  • Page 56 Others ☆ ☆ ☆ ☆ ☆ ☆ ☆  Page 52 ...
  • Page 57 Electrical Circuit 2.Field Maintenance Possible causes of trouble Unit will not start ☆ ☆ ☆ ☆ ☆ ☆ Compressor will not start but fans run ☆ ☆ ☆ ☆ ☆ Compressor and condenser (outdoor) fan will not start ☆ ☆ ☆...
  • Page 58 Refrigerant Circuit Others ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆...

  • Page 59: Troubleshooting By Error Code

    5. Troubleshooting by Error Code Common Check Procedures 5.1.1 Temperature Sensor Check Disconnect the temperature sensor from PCB, measure the resistance value with a tester. Temperature Sensors. Room temp.(T1) sensor, Indoor coil temp.(T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Measure the resistance value of each winding by using the multi-meter.
  • Page 60 E1 (EEPROM parameter error diagnosis and solution) Description: Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip. Recommended parts to prepare: • Indoor PCB • Outdoor PCB Troubleshooting and repair: Shut off the power supply and turn it on 2 minutes later.
  • Page 61 E2 (Zero crossing detection error diagnosis and solution) Description: When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal. Recommended parts to prepare: • Connection mistake • PCB faulty Troubleshooting and repair: Check the connections and power supply.
  • Page 62 E3(Fan speed has been out of control diagnosis and solution) Description: When indoor fan speed keeps too low (300RPM) for certain time, the unit will stop and the LED will display the failure. Recommended parts to prepare: • Wiring mistake •...
  • Page 63 Index: 1. Indoor AC Fan Motor Power on and set the unit running in fan mode at high fan speed. After running for 15 seconds, measure the voltage of pin1 and pin2. If the value of the voltage is less than 100V(208~240V power supply) or 50V(115V power supply), the PCB must has problems and need to be replaced.
  • Page 64 E5/E6 (Open circuit or short circuit of temperature sensor diagnosis and solution) Description: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED will display the failure. Recommended parts to prepare: • Wiring mistake • Faulty sensor •...
  • Page 65 EC (Refrigerant Leakage Detection diagnosis and solution) Description: Define the evaporator coil temp.T2 of the compressor just starts running as Tcool. In the beginning 5 minutes after the compressor starts up, if T2<Tcool-2°C does not keep continuous 4 seconds and this situation happens 3 times, the display area will show “EC”...

  • Page 66: Appendix

    Appendix Contents Temperature Sensor Resistance Value Table for T1, T2, T3, and T4 (°C – K) ..63 Pressure On Service Port ..................64...
  • Page 67 i) Temperature Sensor Resistance Value Table for T1,T2,T3 and T4 (°C – K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249 0.61148 101.517 11.5 2.19073 0.59386 96.3423 10.9731...
  • Page 68 ii) Pressure On Service Port(R410A) Cooling chart: °F(°C) 0(-17) 5(-15) 95 (35) (9.44) (7.22) (23.89) (29.44) (40.56) (46.11) (48.89) 70/59 10.1 10.6 75/63 10.7 11.2 80/67 11.2 11.9 90/73 10.5 10.3 10.0 10.6 12.4 13.0 °F(°C) 0(-17) 5(-15) 95 (35) (9.44) (7.22) (23.89)
  • Page 69 Heating chart: 17/13 (-8.33/ 57/53 47/43 37/33 27/23 -17/-18 °F(°C) 0/-2(-17/-19) (13.89/11.67) (8.33/6.11) (2.78/0.56) (-2.78/-5) (-27/-28) -10.56) 30.3 28.5 25.3 22.8 20.8 18.5 16.5 32.5 30.0 26.6 25.4 23.3 20.5 19.0 33.8 31.5 27.8 26.3 24.9 21.5 20.0 17/13 (-8.33/ 57/53 47/43 37/33...

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