Premium PIAW9164A Service Manual
  1. Manuals
  2. Brands
  3. Premium Manuals
  4. Air Conditioner
  5. PIAW9164A
  6. Service manual

Premium PIAW9164A Service Manual

Hide thumbs Also See for PIAW9164A:
Table of Contents

Advertisement

Quick Links

Download this manual
PREMIUM INVERTER SERIES(COOLING)
Models:
PIAW9164A/PIAW9165B
PIA12264A/PIA12265B
PIA18264A/PIA18265B

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the PIAW9164A and is the answer not in the manual?

Questions and answers

Related Manuals for Premium PIAW9164A

Summary of Contents for Premium PIAW9164A

  • Page 1 PREMIUM INVERTER SERIES(COOLING) Models: PIAW9164A/PIAW9165B PIA12264A/PIA12265B PIA18264A/PIA18265B...

  • 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 ................... 10 Operation Modes and Functions 4. Maintenance and Disassembly ..............18 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 ....................7...

  • Page 8: Model Reference

    1. Model Reference Refer to the following table to determine the specific indoor and outdoor unit model number of your purchased equipment. Indoor Unit Model Outdoor Unit Model Capacity (Btu) Power Supply PIAW9164A PIAW9165B PIA12264A PIA12265B 208/230V~, 60Hz, 1Phase PIA18264A PIA18265B ...

  • Page 9: Electrical Wiring Diagrams

    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 PIAW9164A, PIA12264A 16022000020314 CN12_1 CN13_1 CN12_2 CN13_2 INDOOR WIRING DIAGRAM  Page 5 ...
  • Page 10 PIA18264A 16022000019694 O PTI O N AL Y/ G I O N CN12_1 CN12_2 H EATER CN6_1 CN6_2 OPTIONAL INDOOR WIRING DIAGRAM OPTIONAL  Page 6 ...

  • Page 11: 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 Compressor Discharge Temperature Electronic Expansive Valve ...
  • Page 12 PIAW9165B, PIA12265B BLUE OR BLACK BROWN I N D O O R U N I T 4-WAY CRANKCASE HEATER HEATER BLUE BLACK CN 7 OPTIONAL: DC-FAN  Page 8 ...
  • Page 13 PIA18265B 4-WAY BLACK HEATER CN 414  Page 9 ...

  • Page 14: Product Features

    Product Features Contents Operation Modes and Functions ................11 Abbreviation ....................11 Safety Features ....................11 Display Function ..................12 Fan Mode ....................12 Cooling Mode .....................12 Heating Mode .....................12 Auto-mode ....................13 Drying Mode ....................13 Forced Operation Function ................13 1.10 Timer function .....................13 1.11 Sleep function .....................14 1.12 Auto-Restart Function ..................14 1.13 Refrigerant Leakage Detection ..............14 1.14 Louver Position Memory Function ..............14...

  • Page 15: Operation Modes And Functions

    1. Operation Modes and Functions lower than 3°C. Sensor redundancy and automatic shutoff Abbreviation • If one temperature sensor malfunctions, the air conditioner continues operation and displays the Unit element abbreviations corresponding error code, allowing for emergency use. Abbreviation Element •...

  • Page 16: Display Function

    Display Function Cooling Mode Unit display functions 1.5.1 Compressor Control ∆T is the programmed parameter of temperature compensation. • When T1-Ts < ∆T-2℃, the compressor ceases operation. • When T1-Ts > ∆T+3℃, the compressor continues operation. • When the AC is operating in mute mode, the Function Display compressor operates at a low frequency.

  • Page 17: Auto-Mode

    1.6.2 Indoor Fan Control: Heating*: In auto mode, cooling only models run the fan • When the compressor is on, the indoor fan can be set • The louver operates same as in relevant mode. to high/med/low/auto. • If the machine switches mode between heating and •...

  • Page 18: Sleep Function

    1.14 Louver Position Memory Function • Timer off/on. The machine will turn off automatically when reaching the setting “off” time, When starting the unit again after shutting down, its and then turn on automatically when reaching the louver will restore to the angle originally set by the user, setting “on”...

  • Page 19: Information Inquiry

    1.19 Information Inquiry • To enter information inquiry status, complete the following procedure within ten seconds: • Press LED 3 times. • Press SWING 3 times. • If you are successful, you will hear beeps for two seconds. • Use the LED and SWING buttons to cycle through information displayed.
  • Page 20 Displayed Displayed code Explanation Meaning Additional Notes value Room temperature 1. All displayed temperatures use actual values. Indoor coil temperature 2. All temperatures are -1F,-1E,-1d,-1c,- -25,-24,-23,-22, displayed in °C regardless Outdoor coil 1b,-1A -21,-20 of remote used. temperature -19—99 -19—99 3.
  • Page 21 Displayed Displayed code Explanation Meaning Additional Notes value 0-FF 2-28 Reserved 5-20 5-25  Page 17 ...

  • Page 22: Maintenance And Disassembly

    Maintenance and Disassembly Contents Maintenance ......................19 First Time Installation Check ................19 Refrigerant Recharge ...................21 Re-Installation .....................22 1.3.1 Indoor Unit ..................22 1.3.2 Outdoor Unit ................24 Disassembly ......................26 Indoor Unit ....................26 Outdoor Unit ....................42...

  • Page 23: 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 •...
  • Page 24 Procedure: • If the pressure does not achieve -0.1 MPa Tighten the flare nuts of the indoor and outdoor (14.5 Psi) after 50 minutes, check for leakage. units, and confirm that both the 2- and 3-way valves are closed. • If the pressure successfully reaches -0.1 MPa (14.5 Psi), fully close the Handle Lo valve and Connect the charge hose with the push pin of Handle cease vacuum pump operations.

  • Page 25: 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 9k&12k 7.5m (24.6ft) 10m (32.8ft) 25m (82ft) 15g/m (0.16oz/ft) 7.5m (24.6ft) 20m (65.6ft) 30m (98.4ft) 15g/m (0.16oz/ft) 7.5m (24.6ft)

  • Page 26: Re-Installation

    Re-Installation 1.3.1 Indoor Unit Collecting the refrigerant into the outdoor unit Procedure: Operate the air conditioner in cooling mode. Cease Confirm that the 2- and 3-way valves are opened. operations when the gauge reaches 0.1 MPa Remove the valve stem caps and ensure that the valve (14.5 Psi).
  • Page 27 Air purging with vacuum pump Procedure: • If the pressure does not achieve -0.1 MPa Tighten the flare nuts of the indoor and outdoor (14.5 Psi) after 50 minutes, check for leakage. units, and confirm that both the 2- and 3-way valves are closed.

  • Page 28: Outdoor Unit

    1.3.2 Outdoor Unit Evacuation for the whole system Procedure: Close the valve (Low side) on the charge set and turn Confirm that the 2- and 3-way valves are opened. off the vacuum pump. Connect the vacuum pump to the 3-way valve’s Wait a period of five minutes then check whether the service port.
  • Page 29 Refrigerant charging Procedure: Connect the charge hose to the 3-way service port Open the valves (Low side) on the charge set and and then open the 2- and the 3-way valves. charge 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 30: 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 31 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 32 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 33 Procedure Illustration 7) Slid the front panel side to side to release each axis (see CJ_AB_INV_007) CJ_AB_INV_007 CJ_AF_INV_011-1 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 34 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 35 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 36 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 37 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 38 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 39 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 Display board 10) Pull out the electrical main board along the direction indicated in right image to remove it (see CJ_AB_ INV_022).
  • Page 40 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 41 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 42 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 43 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 39 ...
  • Page 44 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 45 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 46: Outdoor Unit

    Outdoor unit Panel Plate PIAW9165B, PIA12265B , PIA18265B Procedure Illustration 1) Turn off the air conditioner and the Big Handle power breaker. 2) Remove the screws of the big handle and then remove the big handle (1 screws) (see CJ_BA30_001). CJ_BA30_001 Top Cover 3) Remove the screws of the top cover...
  • Page 47 Procedure Illustration 4) Remove the screws of the front panel and then remove the front panel (7 screws) (see CJ_BA30_003). Front Panel CJ_BA30_003 5) Remove the screws of water collecting Water Collecting Cover cover (1 screw) (see CJ_BA30_004). CJ_BA30_004 Note: This section is for reference only. Actual unit appearance may vary. ...
  • Page 48 Procedure Illustration 6) Remove the screws of the rear net and then remove the rear net (2 screws) (see CJ_BA30_005). CJ_BA30_005 7) Remove the screws of the right panel and then remove the right panel (5 screws) (see CJ_BA30_006). Right Panel CJ_BA30_006 Note: This section is for reference only.
  • Page 49 Fan disassembly (Antistatic gloves must be worn when you disassemble the electronic box.) Note: Remove the panel plate and (refer to 1. Panel plate) before disassembling fan. PIAW9165B, PIA12265B: Procedure Illustration 1) Remove the nut securing the fan with a spanner (see CJ_ODU_ INV_001 ).
  • Page 50 Procedure Illustration 5) Disconnect the connector for fan motor from the electronic control board (see CJ_ODU_INV_004 ). Fan Motor CJ_ODU_INV_004 6) Remove the fixing screws of the fan motor (4 screws) (see CJ_ODU_INV_005 ). 7) Remove the fan motor. Fan Motor CJ_ODU_INV_005 Note: This section is for reference only.
  • Page 51  Page 47 ...
  • Page 52 PIA18265B: Procedure Illustration 1) Remove the nut securing the fan with a spanner (see CJ_ODU_ INV_010 ). 2) Remove the fan. CJ_ODU_INV_010 3) Unfix the hooks and then open the electronic control box cover (4 hooks) (see CJ_ODU_INV_011 ). CJ_ODU_INV_011 Note: This section is for reference only.
  • Page 53 Procedure Illustration 4) Disconnect the connector for fan motor from the electronic control board (see CJ_ODU_INV_012 ). CJ_ODU_INV_012 5) Remove the fixing screws of the fan motor (4 screws) (see CJ_ODU_INV_013 ). 6) Remove the fan motor. CJ_ODU_INV_013 Note: This section is for reference only. Actual unit appearance may vary. ...
  • Page 54 Electrical parts (Antistatic gloves must be worn.) Note: Remove the panel plate and fan assembly (refer to 1. Panel plate and 2. Fan assembly) before disassembling electrical parts. PIA12265B, PIA12265B: Procedure Illustration 1) Remove the connector for the 4-Way Valve compressor (see CJ_ODU_INV_014 ).
  • Page 55 PIA18265B; Procedure Illustration 1) Remove the connector for the compressor (see CJ_ODU_INV_016 ). 2) Pull out connectors of the condenser coil temp. sensor(T3),outdoor ambient temp. sensor(T4) and discharge temp. sensor(TP) (see CJ_ODU_INV_016 ). 3) Disconnect the 4-way valve wire (see Fig CJ_ODU_INV_016 ).
  • Page 56 Sound blanket 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_INV_017 ).
  • Page 57 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 58 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 terminal cover (see CJ_ ODU_INV_019 ).
  • Page 59 Procedure Illustration 3) Remove the hex nuts and washers securing the compressor, located on the bottom plate (see CJ_ODU_INV_021 ). CJ_ODU_INV_021 Suction Pipe 4) Heat up the brazed parts and then remove the the discharge pipe and the suction pipe (see CJ_ODU_INV_022 ). 5) Lift the compressor from the base pan Discharge Pipe assembly with pliers.

  • Page 60: Troubleshooting

    Troubleshooting Contents Safety Caution .....................58 General Troubleshooting ..................59 Error Diagnosis and Troubleshooting Without Error Code .......60 Remote maintenance ...................60 Field maintenance ..................61 Quick Maintenance by Error Code ..............62 Troubleshooting by Error Code ................67 Common Check Procedures.................67 E0/F4 (EEPROM parameter error) ..............69 E1 (Indoor and outdoor unit communication error) ........70 E2 (Zero-crossing signal detection error) ............72 E3/F5 (Fan speed is operating outside of the normal range) ......73...
  • Page 61 Troubleshooting Contents 5.10 P1(Over voltage or too low voltage protection diagnosis and solution) ..79 5.11 P2(High temperature protection of IPM module diagnosis and solution) ..80 5.12 P4(Inverter compressor drive error diagnosis and solution) ......81...

  • Page 62: Safety Caution

    1. Safety Caution WARNING Electricity remains in capacitors even when the power supply is off. Ensure the capacitors are fully discharged before troubleshooting. For other models, connect discharge resistance (approx.100Ω 40W) or a soldering iron plug between the positive and negative terminals of the electrolytic capacitor.

  • Page 63: General Troubleshooting

    Indoor unit EEPROM parameter error Page 69 2 times Indoor / outdoor units communication error Page 70 Zero-crossing signal detection error (only for PIAW9164A, 3 times Page 72 PIA12264A) 4 times The indoor fan speed is operating outside of the normal range...

  • Page 64: 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 63-64...

  • Page 65: Field Maintenance

    Field maintenance Problem Solution Unit will not start Page 65-66 Compressor will not start but fans run Page 65-66 Compressor and condenser (outdoor) fan will not start Page 65-66 Evaporator (indoor) fan will not start Page 65-66 Condenser (Outdoor) fan will not start Page 65-66 Unit runs, but shortly stops Page 65-66...

  • Page 66: 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 67 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 68 Others ☆ ☆ ☆ ☆ ☆ ☆ ☆  Page 64 ...
  • Page 69 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 70 Refrigerant Circuit Others ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆...

  • Page 71: 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, Compressor discharge temp.(Tp) sensor.
  • Page 72 5.1.3 IPM Continuity Check Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure the resistance between P and UVWN; UVW and N. Normal resistance Normal resistance Digital tester Digital tester value value...

  • Page 73: E0/F4 (Eeprom Parameter Error)

    E0/F4 (EEPROM parameter error) 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. Is it still displaying the error The unit is operating normally.

  • Page 74: E1 (Indoor And Outdoor Unit Communication Error)

    E1 (Indoor and outdoor unit communication error) Description: The indoor unit has not received feedback from the outdoor unit for 110 seconds, four consecutive times. Recommended parts to prepare: • Indoor PCB • Outdoor PCB • Reactor Troubleshooting and repair: Power off, then restart the unit after 2 minutes.
  • Page 75 Remarks: • Use a multimeter to test the DC voltage between 2 port and 3 port of outdoor unit. The red pin of multimeter connects with 2 port while the black pin is for 3 port. • When AC is normal running, the voltage will move alternately between -25V to 25V. •...

  • Page 76: E2 (Zero-Crossing Signal Detection Error)

    E2 (Zero crossing detection error diagnosis and solution) (only for PIAW9164A, PIA12264A) 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 •...

  • Page 77: E3/F5(Fan Speed Is Operating Outside Of The Normal Range)

    E3/F5(Fan speed is operating outside of the normal range) Description: When the indoor fan speed keeps too low (300RPM) for certain time, the unit will stop and the LED will display the failure(E3). When the outdoor fan speed registers below 200RPM or over 1500RPM for an extended period of time, the unit will stop and the LED will display the failure(F5).
  • Page 78 Index: 1. Indoor or Outdoor 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 79: E4/E5/F1/F2/F3

    E4/E5/F1/F2/F3 (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 80: Ec (Refrigerant Leakage Detection Diagnosis And Solution)

    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 8 minutes after the compressor starts up, if T2<Tcool-2°C does not keep continuous 4 seconds and compressor running frequency higher than 50Hz does not keep continuous 3 minutes, and this situation happens 3 times, the display area will show “EC”...

  • Page 81: F0(Overload Current Protection Diagnosis And Solution)

    F0(Overload current protection diagnosis and solution) Description: An abnormal current rise is detected by checking the specified current detection circuit. Recommended parts to prepare: • Power supply problems. • System blockage • Faulty PCB • Wiring mistake • Compressor malfunction Troubleshooting and repair: Check the power supply.
  • Page 82 P0(IPM malfunction or IGBT over-strong current protection diagnosis and solution) Description: When the voltage signal the IPM sends to the compressor drive chip is abnormal, the display LED shows “P0” and the AC turn off. Recommended parts to prepare: • Wiring mistake •...
  • Page 83 5.10 P1(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 issues • System leakage or blockage •...
  • Page 84 5.11 P2(High temperature protection of IPM module diagnosis and solution) Description: If the temperature of IPM module is higher than setting value, the LED displays this failure code. Recommended parts to prepare: • Faulty PCB • Connection problems Troubleshooting and repair: Check the fastening screws on the PCB and IPM radiator.
  • Page 85 5.12 P4 (Inverter compressor drive error diagnosis and solution) Description: 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. Recommended parts to prepare: •...

  • Page 86: Appendix

    Appendix Contents Temperature Sensor Resistance Value Table for T1, T2, T3, and T4 (°C – K) ..83 Temperature Sensor Resistance Value Table for TP (°C – K)......84 iii) △T(°F) ........................85 Pressure On Service Port ..................86...

  • Page 87: I) Temperature Sensor Resistance Value Table For T1,T2,T3 And T4 (°C - K)

    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 88: Ii) Temperature Sensor Resistance Value Table For Tp (°C - K)

    ii) Temperature Sensor Resistance Value Table for TP (°C – °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 542.7 68.66...

  • Page 89: T(°F)

    iii) ∆T(°F)=(9∆T(°C))/5 °C °F °C °F °C °F °C °F °C °F 69.8 123.8 179.6 235.4 24.8 71.6 125.6 181.4 237.2 26.6 73.4 127.4 183.2 28.4 75.2 129.2 240.8 30.2 186.8 242.6 25.5 77.9 132.8 188.6 244.4 32.9 78.8 134.6 190.4 246.2 33.8...

  • Page 90: Iv) Pressure On Service Port

    iV) 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 91 Heating chart: 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) 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 57/53 47/43 37/33 27/23...

This manual is also suitable for:

Piaw9165bPia12264aPia12265bPia18264aPia18265b

Table of Contents