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INVENTOR V6FO-60 Service Manual
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INVENTOR V6FO-60 Service Manual

INVENTOR V6FO-60 Service Manual

Air conditioning systems floor standing
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AIR CONDITIONING SYSTEMS
FLOOR STANDING
• SERVICE MANUAL
MODELS:
V6FI-60/V6FO-60
ENGLISH

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Summary of Contents for INVENTOR V6FO-60

  • Page 1 AIR CONDITIONING SYSTEMS FLOOR STANDING • SERVICE MANUAL MODELS: V6FI-60/V6FO-60 ENGLISH...
  • Page 3 Table of Contents §. Safety Precautions Precautions Information servicing(For flammable materials) §. Specifications Model Reference Pipe length and the Drop Height Electrical Wiring Diagrams §. Product Features Display Function Safety Features Basic Features Optional Features §. Maintenance First Time Installation Check Refrigerant Recharge Re-Installation §.
  • Page 4 Table of Contents §. Troubleshooting Safety Caution General Troubleshooting Information Inquiry Error Diagnosis and Troubleshooting Without Error Code Quick Maintenance by Error Code Troubleshooting by Error Code Check Procedures Appendix Temperature Sensor Resistance Value Table for T1,T2,T3 and T4 (°C – K) Temperature Sensor Resistance Value Table for TP(for some units) (°C –...

  • Page 5: Safety Precautions

    Safety Precautions Contents Precautions ......................2 Information servicing(For flammable materials) ..........3...

  • Page 6: In Case Of Accidents Or Emergency

    1. Precautions CAUTION To prevent personal injury, or property or unit damage, • • While unpacking be careful of sharp edges around adhere to all precautionary measures and instructions the unit as well as the edges of the fins on the con- denser and evaporator.

  • Page 7: Work Procedure

    2. Information servicing(For • Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable flammable materials) hazards or ignition risks. • NO SMOKING signs shall be displayed. Checks to the area Ventilated area •...

  • Page 8: Detection Of Flammable Refrigerants

    • that capacitors are discharged: this shall be done in shall also take into account the effects of aging or a safe manner to avoid possibility of sparking; continual vibration from sources such as compressors or fans. • that there no live electrical components and wiring are exposed while charging, recovering or purging 2.13 Detection of flammable refrigerants the system;...

  • Page 9: Charging Procedures

    • The refrigerant charge shall be recovered into the • Before attempting the procedure ensure that: correct recovery cylinders. The system shall be flushed • mechanical handling equipment is available, if with OFN to render the unit safe. This process may required, for handling refrigerant cylinders;...
  • Page 10 • Empty recovery cylinders are evacuated and, if • The recovered refrigerant shall be returned to the possible, cooled before recovery occurs. refrigerant supplier in the correct recovery cylinder, and the relevant Waste Transfer Note arranged. Do not • The recovery equipment shall be in good working mix refrigerants in recovery units and especially not in order with a set of instructions concerning the cylinders.

  • Page 11: Specifications

    Specifications Contents Model Reference ....................2 Pipe Length and Drop Height ................3 Electrical Wiring Diagrams ..................4...

  • Page 12: Model Reference

    1. Model Reference Refer to the following table to determine the specific indoor and outdoor unit model. Indoor Unit Model Outdoor Unit Model Capacity (Btu/h) Power Supply V6FI-60 V6FO-60 3 ɸ , 380~415V, 50Hz  Specifications 2 ...
  • Page 13 2. Pipe Length and Drop Height The length and elevation of connection pipe are shown in the table below. if the pipe length exceeds max pipe length, additional refrigerant should be charged to ensure nominal cooling/heating capacity. Capacity(Btu/h) Standard Length Max Pipe Length Max Elevation Additional Refrigerant...

  • Page 14: Electrical Wiring Diagrams

    Indoor and outdoor unit wiring diagram Indoor Unit Outdoor Unit IDU Model IDU Wiring Diagram ODU Model ODU Wiring Diagram V6FI-60 16022200009897 V6FO-60 16022000033470 Outdoor unit printed circuit board diagram Outdoor Unit ODU Model ODU Printed Circuit Board Inverter module printed board V6FO-60 17122000041841 17122000021912 ...
  • Page 15 Indoor unit abbreviations Abbreviation Paraphrase Yellow-Green Conductor HOR-SW Horizontal Fan VER-SW Vertical Fan LIVE NEUTRAL Indoor Room Temperature Coil Temperature of Indoor Heat Exchanger Outdoor unit abbreviations Abbreviation Paraphrase COMP Compressor CAP1,CAP2 Fan Motor Capacitor AC Current Detector Electric Expansion Valve DC FAN1,DC FAN2 Outdoor DC Fan AC FAN1,AC FAN2...
  • Page 18 Outdoor unit printed circuit board diagram: 17122000041841...
  • Page 19 Name Meaning CN301 CN301 Connect to DC fan motor CN23 CN23 Connect to Comp Top CN705 CN705 Connect to AC fan motor CN706 CN706 Connect to AC fan motor CN709 CN709 Connect to AC fan motor CN22 CN22 Connect to high/low pressure protect CN715 CN715 CN714...
  • Page 20 Outdoor unit DC motor driver board diagram: 17122000021912...
  • Page 21 Name Meaning CON1 POWER Power supply 208-230V AC connect to main board TESTPORT used for testing CN505 CN505 connect to PC communication FAN1 FAN1 connect to DC fan1 FAN2 FAN2 connect to DC fan2...

  • Page 22: Table Of Contents

    Product Features Contents Display Function ....................2 Safety Features ......................3 Basic Functions .......................4 Table ......................4 Abbreviation ....................4 Fan Mode ......................4 Cooling Mode ....................4 Heating Mode ....................5 Auto-mode ....................6 Drying Mode ....................6 Sleep Function ....................6 Optional Functions ....................7...

  • Page 23: Display Function

    1. Display Function Unit display functions Auto operation Room Temp/Set Cooling operation Temp/Set Timer Dry operation display Heating operation Fan speed Fan operation operation Vertical airflow display Horizontal airflow Avoid direct When wireless control feature is activated(some models) Electric heating function(some models) Lock operation ...

  • Page 24: Safety Features

    2. Safety Features Sensor redundancy and automatic shutoff • If one temperature sensor malfunctions, the air Compressor three-minute delay at restart conditioner continues operation and displays the Compressor functions are delayed for up to three minutes corresponding error code, allowing for emergency use. upon subsequent unit restarts.

  • Page 25: Basic Functions

    3. Basic Functions Table Cooling Mode&Heating mode Functions Auto Mode Outdoor Fan Control Case 1: Compressor Cases Case 2:T4 Case 1: Case 2: Frequency and T4 Models Note: The detailed description of case 1 or case 2 is shown in the following function sections(from 3.4 to 3.6). ...

  • Page 26: Abbreviation

    Abbreviation compressor ceases operation. • When calculated frequency(fb) is less than minimum Unit element abbreviations limit frequency(FminC). • When protective time is more than or equal to ten Abbreviation Element minutes. Indoor room temperature • When T1 is lower than or equal to (Tsc-CDIFTEMP). Coil temperature of evaporator Note: CDIFTEMP is EEPROM setting parameter.

  • Page 27: Heating Mode

    3.4.4 Condenser Temperature Protection When condenser temperature is more than setting value, the compressor ceases operation.. 3.4.5 Evaporator Temperature Protection When evaporator temperature drops below a configured value, the compressor and outdoor fan cease operation. Heating Mode(Heat pump units) 3.5.1 Compressor Control 1) Reach the configured temperature •...

  • Page 28: Auto-Mode

    • T3 maintained above TCDE2 for 80 seconds. • Unit runs for 15 minutes consecutively in defrosting mode. Cooling • If T4 is lower than or equal to -22°C and compressor running time is more than TIMING_DEFROST_TIME, Ts+7 Cooling if any one of the following conditions is satisfied, Cooling defrosting ends and the machine switches to normal Ts+2...

  • Page 29: Optional Functions

    4. Optional Functions the unit’s temperature setting. • If the unit does not receive a signal for 7 minutes or 8°C Heating you press “Follow Me,” the function turns off. The unit regulates temperature based on its own sensor In heating mode, the temperature can be set to as low and settings.

  • Page 30: Maintenance

    Maintenance Contents First Time Installation Check .................2 Refrigerant Recharge ....................4 Re-Installation .......................5 Indoor Unit ....................5 Outdoor Unit ....................7...

  • Page 31: First Time Installation Check

    1. First Time Installation Check Air and moisture trapped in the refrigerant system affects To prevent air and moisture from affecting the air the performance of the air conditioner by: conditioner’s performance, the indoor unit, as well as the pipes between the indoor and outdoor unit, must be be •...
  • Page 32 Procedure: • If the pressure successfully reaches -0.1 MPa Tighten the flare nuts of the indoor and outdoor (14.5 Psi), fully close the Handle Lo valve, then units, and confirm that both the 2- and 3-way valves cease vacuum pump operations. are closed.

  • Page 33: Refrigerant Recharge

    2. Refrigerant Recharge mA A 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 of the cylinder.

  • Page 34: Re-Installation

    3. Re-Installation 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 35 Air purging with vacuum pump Procedure: • If the pressure successfully reaches -0.1 MPa Tighten the flare nuts of the indoor and outdoor (14.5 Psi), fully close the Handle Lo valve, then units, and confirm that both the 2- and 3-way valves cease vacuum pump operations.

  • Page 36: Outdoor Unit

    Outdoor Unit Evacuation for the whole system Procedure: Wait for 5 minutes then check whether the gauge Confirm that the 2- and 3-way valves are opened. needle moves after turning off the vacuum pump. If Connect the vacuum pump to the 3-way valve’s the gauge needle moves backward, check whether service port.
  • Page 37 Refrigerant charging mA A Procedure: Close both 2- and 3-way valves. Fully open the Handle Lo manifold valve, 2- and 3-way valves. Slightly connect the Handle Lo charge hose to the 3-way service port. Operate the air conditioner in cooling mode to charge the system with liquid refrigerant.
  • Page 38 Indoor Unit Disassembly Contents Dimension ......................2 Indoor Unit Disassembly ..................3 Filter ......................3 Air inlet grille assembly ..................4 Air outlet grille assembly ................5 Display board ....................7 Step motor ....................8 Electric parts ....................10 Fan motor ....................12 Evaporator ....................14...

  • Page 39: Dimension

    1. Dimension  Indoor Unit Disassembly 2 ...

  • Page 40: Filter

    2. Disassembly Filter Procedure Illustration 1) Pull out the filters from each side of air inlet grille subassembly and air outlet subassembly (see CJ_GD_001) CJ_GD_001 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 3 ...
  • Page 41 Air Inlet Grille Subassembly Procedure Illustration 1) Open the screw cap on each side of air inlet grille subassembly.(see CJ_GD_002) 2) Remove 2 screws. (see CJ_GD_002) CJ_GD_002 3) Then pull the air inlet grille subassembly and lift up to remove it (see CJ_ GD_003) (Note: To prevent injury, pay attention to the hooks located at the bottom.)
  • Page 42 Air Outlet Frame Subassembly Procedure Illustration 1) Unplug the 3 connections.(see CJ_ GD_004) CJ_GD_004 2) Remove 3 screws located on the top of air outlet frame subassembly. (see CJ_GD_005) CJ_GD_005 Note: This section is for reference only. Actual unit appearance may vary. ...
  • Page 43 Procedure Illustration 3) Remove 2 screws located on the bottom left and right of air outlet frame subassembly. (see CJ_GD_006) 4) Lift the air outlet frame subassembly up and pull it up to turn it over. (see CJ_GD_006) CJ_GD_006 Note: This section is for reference only. Actual unit appearance may vary. ...

  • Page 44: Display Board

    Display Board Procedure Illustration 1) Remove 1 screw. (see CJ_GD_007) 2) Release 4 hooks. (see CJ_GD_007) 3) Take out display control box subassembly and turn it over.(see CJ_GD_007) CJ_GD_007 4) Release 4 hooks and take out the display board. (see CJ_GD_008) CJ_GD_008 Note: This section is for reference only.

  • Page 45: Step Motor

    Step Motor Procedure Illustration 1) Remove top air outlet foam and bottom air outlet foam . (see CJ_ GD_009) CJ_GD_009 2) Remove 2 screws. (see CJ_GD_010) CJ_GD_010 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 8 ...
  • Page 46 Procedure Illustration 3) Take out inner frame subassembly with 3 swing motors(one is vertical swing motor, two are horizontal swing motors). 4) Remove 2 screws to remove the swing motor. (see CJ_GD_011&012) CJ_GD_011 CJ_GD_012 Note: This section is for reference only. Actual unit appearance may vary. ...

  • Page 47: Electric Parts

    Electrical parts (Antistatic gloves must be worn.) Procedure Illustration 1) Remove 2 screws of the cover of electrical connector.(see CJ_GD_013) CJ_GD_013 2) Remove 2 screws of the cover of the electronic control box (see CJ_ GD_014) 3) Then remove the cover. CJ_GD_014 Note: This section is for reference only.
  • Page 48 Procedure Illustration Indoor Fan Motor VER Swing Motor HOR Swing Motor Display Board 4) Unplug all the connections on the main PCB. (see CJ_GD_015) 5) Release 2 hooks and take out the main PCB (see CJ_GD_015) 6) Release 2 screws then take out the reactor.

  • Page 49: Fan Motor

    Fan Motor Procedure Illustration 1) Rotate the ventilation ring counter- clockwise and until the 4 clips pop out of their holes. (see CJ_GD_018) 2) Pull out the ventilation ring. (see CJ_GD_018) CJ_GD_018 3) Remove the affixing nut on the axis of the fan wheel.
  • Page 50 Procedure Illustration 4) Take the fan wheel out(see CJ_ GD_020) CJ_GD_020 5) Remove 4 nuts around of the motor and 2 screws affixing the cover for the wires. (see CJ_GD_021) 6) Remove the fan motor. CJ_GD_021 Note: This section is for reference only. Actual unit appearance may vary. ...

  • Page 51: Evaporator

    Evaporator Procedure Illustration 1) Remove 7 screws affixing the top cover.(see CJ_GD_022) 2) Remove the top cover. CJ_GD_022 3) Remove 3 screws on each side of the cover assembly.(see CJ_GD_023) 4) Take the cover off. CJ_GD_023 5) Remove 2 screws affixing the inlet/ outlet pipes of the evaporator.(see CJ_GD_024) CJ_GD_024...
  • Page 52 Procedure Illustration 6) Remove 2 screws affixing the water collector subassembly.(see CJ_GD_025) CJ_GD_025 7) Push the side panel slightly so that you can lift the evaporator.(see CJ_GD_026) CJ_GD_026 8) Remove the evaporator.(see CJ_ GD_027) CJ_GD_027 Note: This section is for reference only. Actual unit appearance may vary. ...
  • Page 53 Outdoor Unit Disassembly Contents Outdoor Unit Table ....................2 Dimension ......................3 Outdoor Unit Disassembly .................. Panel Plate ....................4 Electrical Parts .....................7 Fan Assembly ....................9 Fan Motor ....................10 Sound blanket .....................11 Four-way valve .....................12 Compressor ....................13...

  • Page 54: Outdoor Unit Disassembly

    1. Outdoor Unit Disassembly Outdoor Unit Table Outdoor Unit Model Panel Plate PCB Board V6FO-60 PCB Board 4  Outdoor Unit Disassembly 2 ...

  • Page 55: Dimension

    2. Dimension Panel Plate E30  Outdoor Unit Disassembly 3 ...

  • Page 56: Outdoor Unit Disassembly

    3. Outdoor Unit Disassembly 3.1 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_E30_001). CJ_E30_001 3) Remove the screws of the top cover and then remove the top cover (4 screws).
  • Page 57 Procedure Illustration 5) Remove the screws of the front right panel and then remove the front right panel (2 screws) (see CJ_E30_004). CJ_E30_004 Note: This section is for reference only. Actual unit appearance may vary.  Outdoor Unit Disassembly ...
  • Page 58 Procedure Illustration 1) Remove the screws of the front panel and then remove the front panel (7 screws) (see CJ_E30_005). CJ_E30_005 2) Remove the screws of the right panel and then remove the right panel (10 screws) (see CJ_E30_006). CJ_E30_006 Note: This section is for reference only.

  • Page 59: Electrical Parts

    Electrical parts Antistatic gloves must be worn when you disassemble the electronic box. WARNING: Note: Remove the air outlet grille(refer to 3.1 Panel Plate) before disassembling electrical parts.  Outdoor Unit Disassembly ...
  • Page 60 PCB board 4 Procedure Illustration 1) Remove 3 screws to disconnect the wires connected to the compressor. (see CJ_ODU_PCB_004-1) 2) Pull out the connectors (see CJ_ ODU_PCB_004-1) 3) Remove 2 screws to remove the radiator.(see CJ_ODU_PCB_004-1) 4) Remove the 7 screws and unfix the 3 hooks and then remove the CJ_ODU_ main control board.(see...

  • Page 61: Fan Assembly

    Fan Assembly Note: Remove the panel plate (refer to 3.1 Panel Plate) before disassembling fan. Procedure Illustration 1) Remove the nut securing the fan with a spanner (see CJ_ODU_ FAN_001-1&2). 2) Remove the fan. CJ_ODU_FAN_001-1 CJ_ODU_FAN_001-2 Note: This section is for reference only. Actual unit appearance may vary. ...

  • Page 62: Fan Motor

    Fan Motor Note: Remove the panel plate and the connection of fan motor on PCB (refer to 3.1 Panel Plate and 3.2 Electrical parts) before disassembling fan motor. Procedure Illustration 3) Remove the fixing screws of the fan motor (4 screws) (see CJ_ODU_MOTOR_001). 4) Remove the fan motor.

  • Page 63: Sound Blanket

    Sound blanket Note: Remove the panel plate (refer to 3.1 Panel plate) before disassembling sound blanket. Procedure Illustration 1) Remove the sound blanket (side and top) (see CJ_ODU_BLANKET_001). Sound Blanket(top) Sound Blanket(side) CJ_ODU_BLANKET_001 Note: This section is for reference only. Actual unit appearance may vary. ...

  • Page 64: Four-Way Valve

    Four-way valve (for heat pump models) WARNING: Evacuate the system and confirm that there is no refrigerant left in the system before removing the four-way valve and the compressor. (For R32 & R290, you should evacuate the system with the vacuum pump; flush the system with nitrogen;...

  • Page 65: Compressor

    3.7 Compressor WARNING: Evacuate the system and confirm that there is no refrigerant left in the system before removing the four-way valve and the compressor. (For R32 & R290, you should evacuate the system with the vacuum pump; flush the system with nitrogen;...
  • Page 66 Procedure Illustration 3) Remove the hex nuts and washers securing the compressor, located on the bottom plate (see CJ_ODU_COMP_003). CJ_ODU_COMP_003 Suction Pipe 4) Heat up the brazed parts and then remove the the discharge pipe and the suction pipe (see CJ_ODU_COMP_004). Discharge Pipe 5) Lift the compressor from the base pan assembly with pliers.

  • Page 67: Troubleshooting

    Troubleshooting Contents Safety Caution .......................3 General Troubleshooting ..................4 Complain Record Form ..................6 Information Inquiry ....................8 Error Diagnosis and Troubleshooting Without Error Code .......11 Remote maintenance ...................11 Field maintenance ..................12 Quick Maintenance by Error Code ..............17 Troubleshooting by Error Code ................18 TS01-IDU Indoor EEPROM Parameter Error Diagnosis and Solution TS01-ODU Outdoor EEPROM Parameter Error Diagnosis and Solution TS02-L-INV Indoor and Outdoor Unit Communication Error Diagnosis and Solution...
  • Page 68 Contents TS07 Indoor PCB/Display Board Communication Error Diagnosis and Solution TS09-L IPM Malfunction or IGBT Over-strong Current Protection Diagnosis and Solution TS10-L Over Voltage or Too Low Voltage Protection Diagnosis and Solution TS11-L Top temperature Protection of Compressor Diagnosis and Solution TS13-INV Low Pressure Protection Diagnosis and Solution TS18 Outdoor Unit Malfunction Diagnosis and Solution TS30 PFC Module Protection Diagnosis and Solution...

  • Page 69: Safety Caution

    1. Safety Caution WARNING Be sure to turn off all power supplies or disconnect all wires to avoid electric shock. While checking indoor/outdoor PCB, please equip oneself with antistatic gloves or wrist strap to avoid damage to the board. WARNING Electricity remains in capacitors even when the power supply is off.
  • Page 70 These error codes are described in the following tables: Display Error Information Solution Defrost Self clean Heating in room temperature under 8°C Indoor unit EEPROM parameter error TS01-IDU EH 00/EH 0A Indoor/outdoor unit communication error TS02-L-INV EL 01 The indoor fan speed is operating outside of the normal range TS04-L-IDU EH 03 Outdoor temperature sensor is in open circuit or has short circuited...
  • Page 71 IPM malfunction or IGBT over-strong current protection TS09-L PC 00 Over voltage or over low voltage protection TS10-L PC 01 Top temperature protection of compressor TS11-L PC 02 Inverter compressor drive error TS09-L PC 04 PFC module protection TS30 PC 0F Communication error between outdoor main chip and compressor TS33 PC 40...

  • Page 72: Information Inquiry

    Information Inquiry • To enter information inquiry status, complete the following procedure within 10 seconds: • Press LED 3 times. • Press SWING 3 times. • Finish 1 and 2 within 10 seconds, you will hear beeps for two seconds, which means the unit goes into parameter checking mode.
  • Page 73 Error code Display Error Information EH 00/EH 0A Indoor unit EEPROM parameter error Indoor / outdoor unit communication error EL 01 Over low voltage protection of indoor external fan EH 31 Over voltage protection of indoor external fan EH 32 Over-current protection of indoor external fan EH 33 Indoor external fan driver module protection...
  • Page 74 DC voltage protection PC 12 Over voltage or over low voltage protection PC 01 Top temperature protection of compressor or High temperature protection of IPM module or High PC 02 pressure protection Communication error between outdoor main chip and compressor driven chip PC 40 Current Input detection protection Pc 41...

  • Page 75: Error Diagnosis And Troubleshooting Without Error Code

    . 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 13-14...

  • Page 76: Field Maintenance

    Field maintenance Problem Solution Unit will not start 15-16 Compressor will not start but fans run 15-16 Compressor and condenser (outdoor) fan will not start 15-16 Evaporator (indoor) fan will not start 15-16 Condenser (Outdoor) fan will not start 15-16 Unit runs, but shortly stops 15-16 Compressor short-cycles due to overload...
  • Page 77 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 78 1.Remote Maintenance Others 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 Unit is on but the wind is not cold(hot) Unit runs, but shortly stops The unit starts up and stops frequently ☆...
  • Page 79 2.Field Maintenance Refrigerant Circuit Others Possible causes of trouble Unit will not start Compressor will not start but fans run ☆ Compressor and condenser (outdoor) fan will not start Evaporator (indoor) fan will not start Condenser (Outdoor) fan will not start Unit runs, but shortly stops ☆...
  • Page 80 2.Field Maintenance Electrical Circuit Possible causes of trouble Unit will not start ☆ ☆ ☆ ☆ ☆ ☆ Compressor will not start but fans run ☆ ☆ ☆ ☆ ☆ Compressor and condenser (outdoor) fan will not start ☆ ☆ ☆...

  • Page 81: Quick Maintenance By Error Code

    . Quick Maintenance by Error Code If you do not have the time to test which 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 82: Troubleshooting By Error Code

    Error Code Part requiring replacement EC 50/ec EC 53 EC 52 EC 54 EC 55 EC 51 EC 07 PC 00 Indoor PCB Outdoor PCB Outdoor fan motor T3 Sensor T4 Sensor TP Sensor TH Sensor Compressor IPM module board Note: For certain models, outdoor PCB could not be removed separately.

  • Page 83: Ts01-Idu Indoor Eeprom Parameter Error Diagnosis And Solution

    TS01-IDU: Indoor EEPROM parameter error diagnosis and solution Description: Indoor PCB main chip does not receive feedback from EEPROM chip. Recommended parts to prepare: • Indoor PCB Troubleshooting and repair: Shut off the power supply and turn it on 2 minutes later. Is it still displaying The unit is operating normally.
  • Page 84 TS01-ODU: Outdoor EEPROM parameter error or Compressor driven chip EEPROM parameter error diagnosis and solution Description: Outdoor PCB main chip does not receive feedback from EEPROM chip or compressor driven chip. Recommended parts to prepare: • Outdoor PCB Troubleshooting and repair: Shut off the power supply and turn it on 2 minutes later.
  • Page 85 TS02-L-INV: Indoor and outdoor unit communication error diagnosis and solution Description: Indoor unit can not communicate with outdoor unit Recommended parts to prepare: • Indoor PCB • Outdoor PCB • Short-circuited component Troubleshooting and repair: S Communication: Power off, then restart the unit after 2 minutes.
  • Page 86 Remarks: • Use a multimeter to test the DC voltage between 2 port(or S or L2 port) and 3 port(or N or S port) of outdoor unit. The red pin of multimeter connects with 2 port(or S or L2 port) while the black pin is for 3 port(or N or S port) . •...
  • Page 87 XYE Communication: Recommended parts to prepare: • Signal wires • Magnet ring • Indoor PCB • Outdoor PCB Troubleshooting and repair: Power off, then restart the unit 2 Power off, then restart the unit 2 minutes later minutes later Check whether there’s any Check whether there’s any interference.
  • Page 88 TS04-L-IDU: The Indoor fan speed is operating outside of normal range diagnosis and solution) Description: When indoor fan speed keeps too low or too high for a certain time, the LED displays the failure code and the AC turns off. Recommended parts to prepare: •...
  • Page 89 Index: 1. DC Fan Motor(control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector. If the value of the voltage is not in the range showing in below table, the PCB must has problems and need to be replaced. •...
  • Page 90 TS04-ODU: The outdoor fan speed is operating outside of normal range diagnosis and solution) Description: When outdoor fan speed keeps too low or too high for a certain time, the LED displays the failure code and the AC turns off. Recommended parts to prepare: •...
  • Page 91 Index: 1. Outdoor DC Fan Motor (control chip is in outdoor PCB) Release the UVW connector. Measure the resistance of U-V, U-W, V-W. If the resistance is not equal to each other, the fan motor must has problems and need to be replaced. otherwise the PCB must has problems and need to be replaced. 2.
  • Page 92 3. Outdoor DC Fan IPM Board(for some double fan models) Power on and when the unit is in standby, measure the voltage of CON1, pin1-pin2 and pin3-pin2 of CN1 in DC motor driver board. If the value of the voltage is not in the range showing in below tables, the outdoor main PCB must has problems and need to be replaced.
  • Page 93 TS05-IDU: Open circuit or short circuit of indoor temperature sensor(T1, T2) diagnosis and solution Description: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure code. Recommended parts to prepare: • Connection wires •...
  • Page 94 TS05-L-ODU: Open circuit or short circuit of outdoor temperature sensor(T3, T4, TP, T2B) or outdoor unit EEPROM parameter error diagnosis and solution Description: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure code or Outdoor PCB main chip does not receive feedback from EEPROM chip or compressor driven chip.
  • Page 95 TS05-ODU: Open circuit or short circuit of outdoor temperature sensor(T3, T4, TP, T2B,TH) diagnosis and solution Description: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure code. Recommended parts to prepare: • Connection wires •...
  • Page 96 TS06-INV: Refrigerant Leakage Detection diagnosis and solution For some models, Description: Define the evaporator coil temperature T2 of the compressor just starts running as Tcool. In the beginning 5 minutes after the compressor starts up, if T2 < Tcool-1°C(1.8°F) does not keep continuous 4 seconds and compressor running frequency higher than 50Hz does not keep for 3 minutes, and this situation happens 3 times, the LED displays the failure code and the AC turns off.
  • Page 97 For some models,...
  • Page 98 TS07: Indoor PCB / Display board communication error diagnosis and solution Description: Indoor PCB does not receive feedback from the display board. Recommended parts to prepare: • Communication wire • Indoor PCB • Display board Troubleshooting and repair: Power off, then restart the unit 2 minutes later Is it still displaying the error code? The unit functions normally...
  • Page 99 TS09-L: IPM malfunction or IGBT over-strong current protection or Inverter compressor drive error diagnosis and solution Description: When the voltage signal the IPM sends to the compressor drive chip is abnormal, the LED displays the failure code and the AC turns off. Or an abnormal inverter compressor drive is detected by a special detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on.
  • Page 100 Restart the unit when the power supply Restart the unit when the power supply Is the power voltage normal? Is the power voltage normal? returns to normal returns to normal Is the outdoor terminal voltage Are the power wires Reconnect the Is the outdoor terminal voltage Are the power wires Reconnect the...
  • Page 101 1. IPM Continuity Check WARNING Electricity remains in capacitors even when the power supply is off. Ensure the capacitors are fully discharged before troubleshooting. 1. Turn off outdoor unit and disconnect power supply. 2. Discharge electrolytic capacitors and ensure all energy-storage unit has been discharged. 3.
  • Page 102 TS10-L: Over voltage or too low voltage protection diagnosis and solution Description: Abnormal increases or decreases in voltage are detected by checking the specified voltage detection circuit. Recommended parts to prepare: • Power supply wires • IPM module board • PCB •...
  • Page 103 Check whether the power Restart the unit when the power supply Check whether the power Restart the unit when the power supply voltage is normal. gets normal voltage is normal. gets normal Check the wiring of Check the wiring of Measure whether outdoor Measure whether outdoor power wires well or...
  • Page 104 Index: 1. Normal voltage of P and N 208-240V(1-phase,3-phase) 380-415V(3-phase) In standby around 310VDC around 530VDC In operation With passive PFC module With partial active PFC With fully active PFC module module >200VDC >310VDC >370VDC >450VDC 2. Reactor Check Measure the resistance and voltage (to ground) of the reactor. The normal resistance should be around 0.1 ohm. Otherwise, the reactor must have malfunction.
  • Page 105 TS11-L: Top temperature protection of compressor diagnosis and solution Description: If the sampling voltage is not 5V, the LED will display the failure. Recommended parts to prepare: • Connection wires • Outdoor PCB • Over load protector Troubleshooting and repair: Check if the air flow system Clear up the air inlet and outlet or the heat of indoor and outdoor units...
  • Page 106 TS13-INV: Low pressure protection diagnosis and solution Description: Outdoor pressure switch cut off the system because low pressure is lower than 0.13 MPa, the LED displays the failure code. Recommended parts to prepare: • Connection wires • Outdoor PCB • Low pressure protector •...
  • Page 107 Low pressure protection Low pressure protection Are the low pressure protector Are the low pressure protector and main control board wired and main control board wired Reconnect the low pressure protector and main Reconnect the low pressure protector and main properly? properly? control board...
  • Page 108 TS18: Outdoor unit malfunction Diagnosis and Solution Description: The indoor unit detect the outdoor unit is error. Recommended parts to prepare: • Outdoor unit Troubleshooting and repair: Power off, then restart the unit 2 Power off, then restart the unit 2 minutes later.
  • Page 109 TS30: PFC module protection diagnosis and solution Description: When the voltage signal that IPM send to compressor drive chip is abnormal, the LED displays the failure code and the AC turns off. Recommended parts to prepare: • Connection wires • Inductance •...
  • Page 110 Index: 1. Normal voltage of P and N 208-240V(1-phase,3-phase) 380-415V(3-phase) In standby around 310VDC around 530VDC In operation With passive PFC module With partial active PFC With fully active PFC module module >200VDC >310VDC >370VDC >450VDC 2. Reactor Check Measure the resistance and voltage (to ground) of the reactor. The normal resistance should be around 0.1 ohm. Otherwise, the reactor must have malfunction.
  • Page 111 TS33: Communication error between outdoor main chip and compressor driven chip diagnosis and solution Description: The main chip cannot detect the compressor driven chip Recommended parts to prepare: • Outdoor main PCB • Electric control box Troubleshooting and repair: Shut off the power supply and Shut off the power supply and turn it on 2 minutes later.
  • Page 112 TS37: Indoor and outdoor mismatch malfunction diagnosis and solution Description: Indoor and outdoor units are mismatched, the LED displays this code. Please replace the matching indoor or outdoor unit.  Troubleshooting ...

  • Page 113: Check Procedures

    . Check Procedures .1 Temperature Sensor Check WARNING Be sure to turn off all power supplies or disconnect all wires to avoid electric shock. Operate after compressor and coil have returned to normal temperature in case of injury. 1. Disconnect temperature sensor from PCB (Refer to Chapter 5. Indoor Disassembly and Chapter 6. Outdoor Disassembly). 2.
  • Page 114 Resistance Value ATQ420D1TMU ATQ420D1UMU KTQ420D1UMU ATQ420D1SN5A1 Blue-Red Blue-Black 0.37Ω 0.37Ω 0.37Ω 0.37Ω Red-Black Resistance Value ATF235D22TMT ATF250D22UMT KTM240D57UMT KTM240D43UKT Blue-Red Blue-Black 0.75Ω 0.75Ω 0.62Ω 1.03Ω Red-Black Note: The picture and the value are only for reference, actual condition and specific value may vary. Troubleshooting ...

  • Page 115: Ipm Continuity Check

    .3 IPM Continuity Check WARNING Electricity remains in capacitors even when the power supply is off. Ensure the capacitors are fully discharged before troubleshooting. 1. Turn off outdoor unit and disconnect power supply. 2. Discharge electrolytic capacitors and ensure all energy-storage unit has been discharged. 3.
  • Page 116 Normal voltage of P and N 208-240V(1-phase,3-phase) 380-415V(3-phase) In standby around 310VDC around 530VDC In operation With passive PFC module With partial active PFC With fully active PFC module module >200VDC >310VDC >370VDC >450VDC Troubleshooting  ...
  • Page 117 Appendix Contents Temperature Sensor Resistance Value Table for T1, T2, T3, and T4 (°C – K) ..2 Temperature Sensor Resistance Value Table for TP (for some units)(°C --K) ..3 iii) Pressure On Service Port ..................4...
  • Page 118 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 119 ii) Temperature Sensor Resistance Value Table for TP(for some units) (°C --K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm...

  • Page 120: Pressure On Service Port

    iii) Pressure On Service Port Cooling chart(R32): ODU(DB) °F(°C) 0(-17) 5(-15) 95 (35) (-9.44) (7.22) (23.89) (29.44) (40.56) (46.11) (48.89) IDU(DB/WB) 70/59 (21.11/15) 10.3 10.8 75/63 (23.89/17.22) 10.9 11.4 80/67 (26.67/19.44) 11.4 12.1 90/73 (32.22/22.78) 10.7 10.5 10.2 10.8 12.6 13.3 70/59 (21.11/15) 75/63 (23.89/17.22)
  • Page 121 Heating chart(R32): ODU(DB/WB) 57/53 47/43 37/33 27/23 17/13 (-8.33/- 0/-2 -17/-18 °F(°C) (13.89/11.67) (8.33/6.11) (2.78/0.56) (-2.78/-5) 10.56) (-17/-19) (-27/-28) IDU(DB) 55(12.78) 30.9 29.1 25.8 23.3 21.2 18.9 16.8 65(18.33) 33.2 30.6 27.1 25.9 23.8 20.9 19.4 75(23.89) 34.5 32.1 28.4 26.8 25.4 21.9...
  • Page 122 System Pressure Table-R32 Pressure Temperature Pressure Temperature °C °F °C °F 14.5 -51.909 -61.436 1850 18.5 268.25 28.425 83.165 21.75 -43.635 -46.543 1900 275.5 29.447 85.005 -37.323 -35.181 1950 19.5 282.75 30.448 86.806 36.25 -32.15 -25.87 2000 31.431 88.576 43.5 -27.731 -17.916 2050...

  • Page 124: Floor Standing

    AIR CONDITIONING SYSTEMS FLOOR STANDING V:1.0.062022 INVENTOR A.G. S.A. Manufacturer: 24th km National Road Athens - Lamia & 2 Thoukididou Str., Ag.Stefanos, 14565 Tel.: +30 211 300 3300, Fax: +30 211 300 3333 - www.inventor.ac...

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