INVENTOR PF2UVI-09WFI Service Manual
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INVENTOR PF2UVI-09WFI Service Manual

Air conditioning systems, wall mounted unit
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AIR CONDITIONING SYSTEMS
WALL MOUNTED UNIT
• SERVICE MANUAL
MODELS:
PF2UVI-09WFI/PF2UVO-09
PF2UVI-12WFI/PF2UVO-12
PF2UVI-18WFI/PF2UVO-18
PF2UVI-24WFI/PF2UVO-24
ENGLISH

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Summary of Contents for INVENTOR PF2UVI-09WFI

  • Page 1 AIR CONDITIONING SYSTEMS WALL MOUNTED UNIT • SERVICE MANUAL MODELS: PF2UVI-09WFI/PF2UVO-09 PF2UVI-12WFI/PF2UVO-12 PF2UVI-18WFI/PF2UVO-18 PF2UVI-24WFI/PF2UVO-24 ENGLISH...

  • Page 3: Table Of Contents

    CONTENTS Part I : Technical Information ................4 1. Summary ......................4 1-1 Appearance .........................4 1-2 Model List ..........................4 2. Outline Dimension Diagram .................. 5 3. Specification sheet ....................8 4. Function and Control ..................15 4-1L-Style ..................5. Refrigerant System Diagram ................22 Cooling &...

  • Page 4: Part I : Technical Information

    Part I : Technical Information 1. Summary 1-1 Appearance Indoor Unit Outdoor Unit Note: The outdoor grille can be replaced. 1-2 Model List MODEL PF2UVI-09WFI/PF2UVO-09 PF2UVI-12WFI/PF2UVO-12...

  • Page 5: Outline Dimension Diagram

    PF2UVI-18WFI/PF2UVO-18 PF2UVI-24WFI/PF2UVO-24 2. Outline Dimension Diagram The following data is for reference only and the actual size may vary.） 2-1 Indoor Unit（Unit: mm 09K 12K...
  • Page 6 2-2 Outdoor Unit（Unit: mm）...

  • Page 8: Specification Sheet

    3. Specification sheet PF2UVI-09WFI/PF2UVO-09 Product Model 2650 Cooling 2700 Rated Capacity Heating Dehumidifying Kg/h Cooling Rated Power Consumption Heating Cooling Rated Running Current Heating Electric heating power 1600 Max. Input Power Max. Input Current Nameplate Parameter 6.50 SEER Cooling 4.00...
  • Page 9 Indoor unit weight （Net ) Outdoor unit weight (Net ) Length evaporator Tube Diameter Indoor unit D-310-13-8N Motor system Motor Model configuration 792*201*292 Net Dimension(W*D*H) Dimension Packing 848*251*341 Dimension(W*D*H) Liquid Valve Connection Stop Valve Gas Valve GSX088BKQA6JT8 Compressor Model Compressor HIGHLY Brand Parameter...
  • Page 10 1100 Heating Cooling Rated Running Current Heating Electric heating power 1900 Max. Input Power Max. Input Current 6.10 SEER Cooling 4.00 SCOP Heating 220-240V-1-50Hz Power supply source V/Ph/Hz Refrigerant Refrigerant Charged Max. Discharge Pressure Max. Suction Pressure Air Flow Volume m3/h Noise level dB（A)
  • Page 11 848*251*341 Packing Dimension(W*D*H) Liquid Valve Connection Stop Valve Gas Valve KSN98D34UER3 Compressor Model Compressor GMCC Brand Parameter Motor D-35-10A Motor Model system Outdoor unit Length configuration Condenser Tube Diameter 705*279*530 Net Dimension (W*D*H) Dimension 818*316*576 Packing Dimension (W*D*H) PF2UVI-18WFI/PF2UVO-18 Product Model 5300 Cooling 5300...
  • Page 12 Max. Input Current SEER Cooling SCOP Heating 220-240V-1-50Hz Power supply source V/Ph/Hz Refrigerant Refrigerant Charged Max. Discharge Pressure Max. Suction Pressure Air Flow Volume m3/h Noise level dB（A) Noise level dB（A) 10.5 Indoor unit weight （Net ) Outdoor unit weight (Net ) Length evaporator Tube...
  • Page 13 Motor D-40-10L Motor Model system 787/769 Length Condenser Tube Diameter 785*300*555 Net Dimension (W*D*H) Dimension 898*362*591 Packing Dimension (W*D*H) PF2UVI-24WFI/PF2UVO-24 Product Model 7200 Cooling 7200 Rated Capacity Heating Dehumidifying Kg/h 2200 Cooling Rated Power Consumption 2200 Heating Cooling Rated Running Current Heating Nameplate Parameter...
  • Page 14 1300 Refrigerant Charged Max. Discharge Pressure Max. Suction Pressure 1150 Air Flow Volume m3/h Noise level dB（A) Noise level dB（A) Indoor unit weight （Net ) Outdoor unit weight (Net ) Length evaporator Tube Diameter Indoor unit Motor D-310-50-8A Motor Model configuration system 1132*232*330...

  • Page 15: Function Buttons

    Function buttons Remote controller Signal transmitter...

  • Page 16: On/Off Button

    Function buttons 1. “ON/OFF” button Press the ON/OFF button to start or stop the unit. well. 2. “MODE” button Press the MODE button to select the operation mode The operation mode will change as below: Note: cooling-only units have no heating function 3.

  • Page 17: Menu / Ok Button

    Function buttons 6. “SPEED” button Press the SPEED button to select the fan speed. Fan speed setting will change as follows: 7. “SWING” buttons (SWING U/D and SWING L/R) Press the buttons to activate the corresponding swing function (up/ down or left/right). To deactivate the corresponding swing function, press the button again.
  • Page 18 Function buttons 10. HEALTH While the unit is powered on, follow these steps to activate the “HEALTH” function: 1. Press the “MENU” button. 2. Use the (+) (-) and the (L/R SWING) and (U/D SWING) buttons to HEALTH””character. 3. Press the “OK” button to either activate or deactivate the “HEALTH” function.
  • Page 19 Function buttons 13. SILENCE When the unit is operational, follow these steps to engage the “SILENCE” function: 1. Press the “MENU” button. 2. Use the (+) (-) and the (L/R SWING) and (U/D SWING) buttons to SILENCE””character. 3. Press the “OK” button to either activate or deactivate the “SILENCE” function.
  • Page 20 Function buttons 15. DISPLAY While the unit is operational, follow these steps to enable the “DISPLAY” function: 1. Press the “MENU” button. 2. Use the (+) (-) and the (L/R SWING) and (U/D SWING) buttons to DISPLAY” character. 3. Press the “OK” button to either activate or deactivate the “DISPLAY” function.
  • Page 21 Function buttons 17. ICLEAN The air conditioner will automatically clean the dust from the evaporator and either dry or blow-dry the moisture. these steps: 1. Press the “MENU” button. 2. Use the (+) (-) and the (L/R SWING) and (U/D SWING) buttons to iCLEAN”...
  • Page 22 Function buttons 1. Press the “MENU” button. 2. Use the (+) (-) and the (L/R SWING) and (U/D SWING) buttons to 3. Press the “OK” button to activate or deactivate the Anti-F function. The “Anti-F” character will either be highlighted or not, depending accordingly.

  • Page 23: Temperature Setting

    Function buttons 22. TEMPERATURE SETTING keys simultaneously for at least 10 seconds. 2. The display will show the maximum temperature setting value 3. The minimum temperature setting (16°C/60°F) will be displayed with Additional note: - While setting the minimum temperature, a long press of the “Cool” and “Mode”...

  • Page 24: Insert/Replace Batteries

    Insert/replace batteries 1. Open the cover by sliding it as shown above. 2. Insert two brand new batteries AAA, position the batteries according to electric pole indications (+ & -). 3. Re-insert the cover by sliding it as shown above. Automatic operation mode (AUTO) 1.
  • Page 25 difference range from16-32℃. 4. Press the SPEED button, you can select motor speed. You can select motor speed from LOW, MID, HIGH, AUTO. 5. Press the button again, the air-conditioner stops. 3) Precautions Aim the remote controller towards the receiver on the air- conditioner. •...

  • Page 26: Refrigerant System Diagram

    5. Refrigerant System Diagram Cooling & Heating  Cooling Mode Indoor Unit Outdoor Unit  Cooling Cycle Steam-gas of low pressure Indoor heat exchanger Compressor (Evaporation) (Compression) 4-way valve (Heat pump only) Liquid of low pressure Gas of high pressure (also a little gas) &...

  • Page 27: Heating Cycle

     Heating Mode Indoor Unit Outdoor Unit  Heating Cycle Gas of high pressure & temperature Indoor heat exchanger Compressor (Evaporation) (Compression) 4-way valve (Heat pump only) Super cooled liquid of low pressure Steam-gas of low pressure Super cooled liquid of high pressure Capillary Outdoor heat exchanger...

  • Page 28: Electrical Part

    6. Electrical Part The diagrams listed below for reference only, please refer to the actual product. 6-1 Wiring Diagram  Indoor Unit 09K、12K、18...
  • Page 29  Outdoor Unit 09K、12K、8K、24K...

  • Page 30: Part Ii : Installation And Maintenance

    Part II : Installation and Maintenance 7. Main Tools for Installation and Maintenance...

  • Page 31: Installation

    8. Installation 8-1 Notes for Installation Important Notices  Before installation, please contact with local authorized maintenance center, if unit is not installed by the authorized maintenance center, the malfunction may not solved, due to discommodious contact.  The air conditioner must be installed by professionals according to the national wiring rules and this manual.

  • Page 32: Installation Of Indoor Unit

     The power cable enables communication between the indoor and outdoor units. You must first choose the right cable size before preparing it for connection. Grounding Requirements  The air conditioner is the type I electrical appliance and must ensure a reliable grounding.
  • Page 33 1. The wall for installation of the indoor unit shall be hard and firm, so as to prevent vibration. 2. Use the "+" type screw to fasten the peg board, horizontally mount the peg board on the wall, and ensure the lateral horizontal and longitudinal vertical. 3.
  • Page 34 Tightening torque table The size of pipe(mm) Torque(N·m) Φ6/Φ6.35 15～25 Φ9 /Φ9.5 2 35～40 Φ12/Φ12.7 45～60 Φ15.88 73～78 Φ19.05 75～80  Wrap the Piping 1. Use the insulation sleeve to wrap the joint part the indoor unit and the connection pipe, and then use insulating material to pack and seal insulation pipe, to prevent generation of condensate water on the joint part.

  • Page 35: Installation Of Outdoor Unit

    ● Fix the cable reliably with fasteners (Pressing board). ● Put the E-parts cover back in its original place and fasten it with screws. Wiring Diagram NOTE: ※ This manual usually includes the wiring mode for the different kind of A/C. We cannot exclude the possibility that some special type of wiring diagrams are not included.

  • Page 36: Wiring Connection

     Install the connection pipe Connect the Outdoor Unit with Connecting Pipe: Aim the counter-bore of the connecting pipe at the stop valve, and tighten the Taper nut with fingers. Then tighten the Taper nut with a torque wrench. ★When prolonging the piping, extra amount of refrigerant must be added so that the operation and performance of the air conditioner will not be compromised.
  • Page 37 Wiring Diagram NOTE: ※ This manual is usually includes the wiring mode for the different kind of A/C. We cannot exclude the possibility that some special type of wiring diagrams are not included. ※ The diagram are for reference only. If the entity is difference with this wiring diagram, please refer to the detailed wiring diagram adhered on the unit which you purchased.

  • Page 38: Check After Installation And Test Operation

    Before working on the air conditioner, remove the cover of the stop valve(gas and liquid valves)and be sure to retighten it afterward.(to prevent the potential air leakage) 1. To prevent air leakage and spilling tighten all connecting nut of all flare tubes. 2.
  • Page 39 ★ Leak test of the refrigerant Depending on the installation method, the following methods may be used to check for suspect leak, on areas such as the four connections of the outdoor unit and the cores of the cut-off valves and t-valves: ①...

  • Page 40: Maintenance

    9. Maintenance 9-1 Troubleshooting Guide Many error codes many appears on this air conditionor, and this troubleshooting guide is prepared for the maintenance personnel to detect the error position and the parts to be replaced during the troubleshooting process. In this Guide, the Troubleshooting Method is guided by the Error Name, and the Reference Code under the General Index is the error code of the Indoor Unit unit of the mainstream model supplied by the Company.
  • Page 41 Refrigeration Overload Protection Exhaust Protection Indoor High Temperature Protection Anti-freezing Protection in Refrigeration Room Overcurrent Protection Function protection prompt of frequency See the Error List conversion Outdoor Unit machine Troubleshooting Guide on Category-L Failures See the Error List (Subdivided Failures) Example: Cause: explain the principle of the specific error.
  • Page 42 （1）E0- Overcurrent Protection of Indoor Unit Cause: The main PCB detects that the working current of the system exceeds the upper limit of protection, and will indicate "indoor unit overcurrent protectin:. The air conditioner stopps running for protection and displays the failure code E0. Explanation of error Inspection path: current transformer →...
  • Page 43 （2）E1- Indoor Unit temperature sensor error Cause: The detection of short circuit or open circuit of Indoor Unit temperature sensor during the inspection of main PCB in the Indoor Explanation of Unit machine, indicated by “Indoor Unit temperature sensor error”. error Inspection path: Sensor→Sensor wire→Connectors→Indoor Unit main PCB...
  • Page 44 Most Indoor Unit temperature sensors of the frequency conversion machine have a resistance value of 15KΩ. Do not use improper sensor during repairing and maintenance, or it may led to the wrong temperature sensing of the machine, the start error or shutdown error. You can switch the air conditioner to the “Blowing”...
  • Page 45 Most Indoor Unit temperature sensors of the frequency conversion machine have a resistance value of 20KΩ. Do not use improper sensor during repairing and maintenance, or it may led to the start of protection mode due to wrong temperature sensing of the machine, or the protection error. In case a sensor with the resistance value over 20KΩ...
  • Page 46 Most Indoor Unit temperature sensors of the frequency conversion machine have a resistance value of 20KΩ. Do not use improper sensor during repairing and maintenance, or it may led to the start of anti-frosting or overheat protection mode due to wrong temperature sensing of the machine.
  • Page 47 （ 5） E4 -Indoor Unit motor error of wall mounted air conditioner （ PG motor） Cause: PG motor is equipped with speed feedback signal line. When the feedback signal of speed is not received by the Indoor Unit main PCB, it has no way to recognize the rotating speed of motor, which will be indicated as “Indoor Unit motor error”.
  • Page 48 (6) E4- Indoor Unit motor error of wall mounted air conditioner (DC motor) Cause: The Indoor Unit motor of some highly energy efficient models is DC motor using a green plug through which the Indoor Unit main PCB can drive the motor and sense the current rotational speed feedback.
  • Page 49 Five lead wires division: Count from the outermost side of the four wires of the DC motor terminal, the first blue wire is the speed feedback wire with a voltage of 0.5-5V when the motor rotates; the second yellow wire is the motor driving wire with a voltage of 2.0-7.5V when the motor rotates;...
  • Page 50 1. Firstly, the IDU and the ODU should be matched and connected properly. 2. Observe the Outdoor Unit main PCB, turn on the air conditioner, three lights are all lighted up then off and the relay pulls in. If not, it is Inspection power supply problem.
  • Page 51 、 (8) Eb –Indoor EE Failure Cause: Many parameters need to be preset for the running of the indoor unit of the air conditioner and such parameters are placed in a data storage 8-feet chip, which is called "EEPROM" or "EE" for short. The motor on the Indoor Unit main PCB can only work after reading the data stored in EE and if not read, the failure code "Outdoor EE Failure"...
  • Page 52 (9) F0- Outdoor Unit DC motor error (3-core terminal motor) Cause: Our frequency changing Outdoor Unit unit uses the 3-lead-wire DC motor, or “Outdoor Unit driven DC motor” for short, after 2012. It has no speed feedback circuit but 3 drive lead wires and its driving Explanation of principle is similar to that of the compressor.
  • Page 53 Unlike the 5-core Indoor Unit DC motor, there will be a process of motor blade position locking before the 3-core DC motor with Outdoor Special attention Unit drive starts to rotate. The fan blades will shake mechanically for 3-5 seconds and then rotate slowly, which is normal phenomenon. (10) F1 -Module protection error Cause: The power module is the part to directly drive the compressor to work.
  • Page 54 1. Is the order of compressor wires not correct, which makes the compressor rotate reversely? Try exchanging the compressor wires on U-V phase to see if the problem can be solved? 2. Check if the supply voltage is unstable and highly volatile, and test if the system pressure is normal.
  • Page 55 (11) F2- PFC protection error Cause: PFC board is a component of the inverter air conditioner for power factor correction and voltage boosting. When the PFC board cannot perform power calibration as normal because of overcurrent and Explanation of overvoltage, it will indicate “PFC protection error” and its function error may also be integrated with the module panel or main PCB.
  • Page 56 (12) F3- Compressor out-of-step error Cause: The module panel will constantly test the current of lead wires of the compressor and calculate the position of the rotator of the compressor when driving the compressor to work. When the compressor deviates far from the normal operating status , it will indicate “compressor out-of-step error”...
  • Page 57 For the “compressor out-of-step error” and “module protection error”, the former is calculated by the main chip of the module panel and the latter is detected by the power module itself. They are abnormal operating phenomenon of the compressor essentially. If there is Special attention uncertainty about either error, analyze both together with similar method.
  • Page 58 Cause: The compressor top head sensor is a compressor top head temperature protection switch most of the time. It keeps closed (short circuit) when the compressor temperature is normal and switches off Explanation of (open circuit) when the temperature is too high. The Outdoor Unit main PCB will indicate “compressor top head sensor error”...
  • Page 59 （15）F6- Outdoor Unit temperature sensor error Cause: The detection of short circuit or open circuit of Outdoor Unit termperature sensor during the inspection of Outdoor Unit main PCB, Explanation of indicated by "Outdoor Unit termperature sensor error". error Inspection path: Sensor→Sensor wire→Connectors→Outdoor Unit main PCB Tools required Multimeter, 15KΩ...
  • Page 60 （16）F7-OVP or UVP error Cause: All the inverter air conditioners are equipped with voltage inspection circuits, but differnt models of machines have differnt locations for the voltage inspection (on the modue panel or Outdoor Unit main PCB). When the supply voltage is lower than 135V or Explanation of higher than 275V, the inspectio circuit would detect over or under voltage protection signal and send it to the Outdoor Unit main PCB...
  • Page 61 For some models, OVP or UVP error signal is delivered through the connector wires between the module panel and the Outdoor Unit main PCB, thus it is possible the voltage signal is not delivered when the communication between teh module panle and the Outdoor Unit main Special attention PCB is not good.
  • Page 62 Cause: Many parameters need to be preset for the running of the Outdoor Unit unit of the air conditioner and such parameters are placed in a data storage 8-feet chip, which is called "EEPROM" or "EE" for short. The motor on the Outdoor Unit main PCB can only work after reading the data stored in EE and if not read, the alarm "outdoor EE Explanation of error"...
  • Page 63 1. If the error appears in heating but not in cooling, first check if the four-way valve failed to change the position or there is a back flow, which can be estimated by measuring the high and low pressures with the pressure meter;...
  • Page 64 1. Check whether the plug-in terminals are firmly connected and whether the terminals and the main PCB are welded loosely. If necessary, gently pull them to check; 2. Use a multimeter to measure whether it is disconnected; Inspection 3. Use the multimeter to check the state of the High-pressure swtich and check whether it is in the OFF state (normally OFF, unusual procedure and disconnection);...
  • Page 65 Frequent Stop valve, evaporator, condenser and connection pipe problematic part 1. Check the stop valve and turn it counterclockwise with hexagons to see if the valve is not open and the opening is not enough; 2. Check whether the evaporator, condenser and connection pipe are Inspection damaged or cracked, and focus on checking whether there is refrigerant procedure and...
  • Page 66 Tools required Multimeter and pressure gauge for inspection Frequent Coil sensor, condenser and outdoor unit controller problematic part 1. Check the coil sensor with a multimeter to see if the resistance value is normal (20KΩ standard sensor, 25℃) 2. Use a pressure gauge to detect system pressure. If the system pressure is high, it may cause Indoor Unit dirty blockage or poor Inspection Outdoor Unit heat transfer, which may lead to high coil temperature.
  • Page 67 Tools required Multimeter, pressure gauge, regular 50KΩ exhuast sensor (25℃) for inspection Frequent Indoor coil sensor problematic part 1. Check if the system pressure is low, if is, usually it the shortage of liquid that leads to excessive exhaust temperature protection; 2.
  • Page 68 Tools required Multimeter, pressure gauge, regular 20KΩ exhuast sensor (25℃) for inspection 1. Check whether the indoor air inlet is blocked or not, if it affects the wind, remove the shield; 2.Check whether the filter is dirty or not. If dirty blockage is found in Frequent the filter, clean the filter.
  • Page 69 Tools required Multimeter, pressure gauge, regular 20KΩ exhuast sensor (25℃) for inspection Frequent Indoor coil sensor problematic part 1. Check whether the indoor air inlet is blocked or not, if it affects the wind, remove the shield; 2.Check whether the filter is dirty or not. If dirty blockage is found in Inspection the filter, clean the filter.
  • Page 70 Cause: Controller detects AC bus current exceeding the set protection value, then limits and reduces the frequency. Explanation of Inspection path: system blockage → grid voltage→ outdoor unit error controller Tools required Multimeter, pressure gauge for inspection Frequent Grid voltage and outdoor unit controller problematic part 1.
  • Page 71 machine Cause: In the regular running of the air conditioner, for some nonfaulted status, it may need the compressor to shut down or limit or lower the frequency so as to protect the normal operating of the entire cooling system (eg. defrosting, slight undercooling, over pressure, overcurrent, etc.).
  • Page 72 6. Over or under pressure protection: this protection is a pilot protection for the "over or under pressure error". When the power pressure is too high or too low but not so high or so low to reach limit for shutting down (within 165V-265V), it would limit and lower the frequency first to reduce the air conditioner's needs for the power to keep teh air conditioner running.

  • Page 73: Display Error Code Of Outdoor Unit's Indicator Lights

    9-2 Display error code of outdoor unit's indicator lights Display by the 3 LED indicator lights on the PCB of the outdoor unit: ○ for off; ● for on; ★ for flashing. Error Name Probable Trouble Location Normal (outdoor Normal, all three lights off for standby ○...
  • Page 74 Indoor Unit room Indoor Unit room temperature sensor, ● ★ ● temperature Indoor Unit main PCB. sensor error Indoor Unit coil Indoor Unit coil sensor, Indoor Unit main ● ○ ★ sensor error PCB. Indoor motor Mechanical jam of motor, Indoor Unit ○...

  • Page 75: Troubleshooting For Normal Malfunction

    9-3 Troubleshooting for Normal Malfunction  The Foremost Inspecting Items ① The input voltage must be within +10% tolerance of the rated Voltage. If it is not the case, the air-conditioner will probably not work normally. ② Check the connecting cord between indoor unit and outdoor unit to see if it is properly connected.

  • Page 76: Fault Diagnosis By Symptom

     Fault Diagnosis by Symptom ①No Power Display (1) Items a) Check if the input voltage is correct? b) Check if the AC power supply connecting is correct? c) Check if the output voltage of the manostat L7805 (IC2) is correct? (2) Trouble shooting procedure...
  • Page 77 ②The Indoor Motor Does Not Work (1) Items a) Check if the indoor Motor is connected correctly to the connector (CN8)? b) Check if the AC input voltage is correct? c) Check if the IC of indoor Motor is connected correctly to the connector (CN2)? d) Check if the capacity of indoor Motor is connected correctly to the connector (CN8)? (2) Trouble shooting procedure...
  • Page 78 ③The Outdoor Unit Does Not Work (1) Items a) Check if the input voltage is correct? b) Check if the wire connection of the outdoor connecting terminal is correct? (2) Trouble shooting procedure...
  • Page 79 ④The Step Motor Does Not Work (1) Items a) Check if the input voltage is correct? b) Check if the step motor controlling the up-down movement firmly connected to Cn2? (2) Trouble shooting procedure...
  • Page 80 ⑤Heating Mode Can Work, But No Hot Air Blow (1) Check if the set temperature is lower than the indoor temperature? (2) Check if the indoor PCB is connected to the terminal correctly?
  • Page 81 ⑥ Remote Control Can Not Work Trouble shooting procedure...

  • Page 82: Exploded Views And Parts List

    10. Exploded Views and Parts List 10-1 Indoor Unit...
  • Page 83 Part List Part Name Quantity Part Name Quantity Evaporator panel assembly Evaporator left side Display board 13.1 carriage Evaporator part A Air louver 13.2 Evaporator part B Filter 13.3 Medium frame Motor cover decorative strip Left side panel IDU Motor Mounting plate Medium frame assembly...

  • Page 84: Outdoor Unit

    10-2 Outdoor Unit...
  • Page 85 Part Name Quantity Part Name Quantity right side board 18.2 Capillary assembly crimping cover base condenser lug ground plate top cover E-parts cover Isolation of cardboard valve plate 4-way valve tubing assembly stop valve 22.1 4-way valve stop valve 22.2 suction pipe assembly Chassis assembly 22.3...

  • Page 86: Removal Procedure

    11. Removal Procedure Stop operation of the air conditioner and remove the power cord before repairing the unit. 11-1 Indoor Unit Parts Procedure Diagram 1) Turn off the power, hold the middle panel with the middle finger, Front Panel 2) open the panel upwards, remove the panel fixing shaft, remove...
  • Page 87 Loosen the clasps of the medium medium frame , remove the frame medium frame. 1) Take all the connector of PCB upper side out.(Including Power cord) Electrical 2) Detach the outdoor unit Parts connection wire from (Main PCB) terminal block. 3) If pulling the main PCB up, it will be taken out.
  • Page 88 1) Loosen fixing screws and detach the motor holder. 2) Loosen fixing screw of Motor Motor. (with a M6 wrench) & 3) Detach the Motor from the Cross Motor motor. 4) Detach the motor from the left holder bearing. Remove screws on volute and volute remove the volute.

  • Page 89: Outdoor Unit

    11-2 Outdoor Unit Part Procedure Diagram Turn off the power , remove connection screws among top cover plate, front panel top cover and right side panel, then remove the top cover. Control box Remove the control box cover cover Remove connection screws between the panel grille front grille and the front panel .Then remove the front grille.
  • Page 90 Remove connection screws connecting the front panel with the chassis and the Front panel motor support , and remove the front pannal. Remove connection screws Connecting E-part cover the right side panel, then remove the E-part cover. Remove connection screws connecting Right side the right side panel with the valve support panel...
  • Page 91 Remove the nut fixing the blade and then Axial flow remove the axial flow blade. blade Remove the tapping screws fixing the Outer motor motor, pull out the lead-out wire and remove the motor. Loosen the wire and disconnect the Electric box terminal.
  • Page 92 Remove the tapping screws fixing the Motor motor support . Lift motor support to support remove it. Remove 2 connection screws Connecting reactor the partition board, remove the reactor. Loosen the screws of the partition board， Partition then lift and pull the partition board to board remove .
  • Page 93 Remove connection screws connecting left side the left side support plate with the valve support plate support, then remove the left side support plate. After the unit is discharged, Unscrew the Pipeline fastening nut of the 4-way Valve Assy assembly coil and remove the pipeline assembly.
  • Page 94 Loosen 1 footing screws of valve plate, Valve plate remove the valve plate. Loosen 3 footing screws of compressor, Compressor Remove and remove the compressor. Loosen 2 fixing screws Connecting condenser chassis, and remove the condenser. Last remaining chassis.

  • Page 95: Appendix

    Appendix Common Sensor R-T Analysis Table Temperature sensor R-T analysis table （15K ） Sensor standard resistance：15KΩ±3% B:B(25/50)=3950K±2％Reference temperature：25（℃） MCU_A/D exchange ±3LSB（at10bit） Series (sampling) resistor：10（KΩ）±1％ (except disk sensor) Single chip (A/D reference voltage) supply voltage：5V Temp Resistance（KΩ） MCU Input voltage（V） A/D Exchange value （℃）...
  • Page 96 31.50 32.99 34.52 1.114 1.163 1.214 30.03 31.42 32.84 1.158 1.207 1.258 10.0 28.64 29.94 31.26 1.203 1.252 1.304 11.0 27.32 28.53 29.77 1.248 1.298 1.350 12.0 26.07 27.20 28.35 1.294 1.344 1.396 13.0 24.89 25.94 27.01 1.341 1.391 1.443 14.0 23.76 24.74...
  • Page 97 53.0 4.553 4.802 5.060 3.309 3.378 3.446 54.0 4.382 4.625 4.877 3.350 3.419 3.487 55.0 4.219 4.457 4.703 3.390 3.459 3.527 56.0 4.061 4.293 4.534 3.429 3.498 3.566 57.0 3.911 4.137 4.373 3.468 3.537 3.604 58.0 3.767 3.988 4.218 3.506 3.574 3.642 59.0...
  • Page 98 98.0 0.9826 1.068 1.160 4.476 4.518 4.557 99.0 0.9535 1.037 1.127 4.489 4.530 4.569 100.0 0.9252 1.007 1.095 4.502 4.543 4.580 101.0 0.8981 0.9778 1.064 4.515 4.555 4.592 102.0 0.8717 0.9497 1.034 4.527 4.566 4.603 103.0 0.8463 0.9225 1.005 4.539 4.578 4.613 104.0...
  • Page 99 Temperature sensor R-T analysis table (20K) Sensor standard resistance：20KΩ±3% B:B(25/50)=3950K±2％ reference temperature：25（℃） MCU_A/D exchange ±3LSB（at10bit） Series（sampling）resistor：10（KΩ）±1％ Single chip (A/D reference voltage) supply voltage：5V Temp Resistance（KΩ） MCU Input voltage（V） A/D Exchange value ℃ 318.3 347.0 377.6 0.128 0.140 0.154 299.6 326.2 354.6 0.136 0.149...
  • Page 100 39.95 41.85 43.78 0.922 0.964 1.009 38.11 39.88 41.68 0.960 1.002 1.047 36.37 38.02 39.69 0.998 1.041 1.087 34.71 36.25 37.81 1.038 1.081 1.127 33.14 34.57 36.03 1.078 1.122 1.168 31.65 32.98 34.34 1.119 1.163 1.210 30.23 31.47 32.74 1.161 1.206 1.252 28.88...
  • Page 101 5.216 5.519 5.831 3.147 3.222 3.297 5.025 5.321 5.625 3.188 3.263 3.339 4.842 5.131 5.428 3.229 3.304 3.380 4.667 4.948 5.238 3.270 3.345 3.420 4.499 4.773 5.055 3.310 3.385 3.459 4.338 4.605 4.880 3.349 3.423 3.498 4.183 4.444 4.712 3.388 3.462 3.536 4.035...
  • Page 102 1.070 1.164 1.258 4.436 4.479 4.521...
  • Page 103 Temperature sensor R-T analysis table (50K) Sensor standard resistance：50KΩ±2％ B:B(25/50)=3950K±2％ reference temperature：25（℃） MCU_A/D exchange ±2LSB（at8bit） Series（sampling）resistor：5.1（KΩ）±1％ Single chip (A/D reference voltage) supply voltage：5V Temp Resistance（KΩ） MCU Input voltage（V） A/D Exchange value ℃ 465.7 486.2 507.3 0.049 0.052 0.055 439.7 458.7 478.3 0.052 0.055...
  • Page 104 63.88 65.36 66.85 0.351 0.362 0.373 61.08 62.47 63.86 0.366 0.377 0.389 58.42 59.72 61.02 0.382 0.393 0.405 55.88 57.1 58.32 0.398 0.410 0.422 53.47 54.61 55.76 0.415 0.427 0.439 51.18 52.25 53.32 0.433 0.445 0.457 0.450 0.463 0.476 46.88 47.86 48.84 0.468...
  • Page 105 9.24 9.585 9.94 1.684 1.736 1.790 8.916 9.253 9.599 1.723 1.777 1.831 8.605 8.934 9.271 1.763 1.817 1.872 8.307 8.627 8.955 1.803 1.858 1.914 8.02 8.331 8.652 1.843 1.899 1.955 7.744 8.048 8.36 1.883 1.939 1.997 7.479 7.775 8.079 1.923 1.981 2.039 7.224...
  • Page 106 1.961 2.066 2.176 3.494 3.558 3.621 1.905 2.007 2.114 3.524 3.588 3.650 1.85 1.95 2.055 3.554 3.617 3.679 1.797 1.895 1.997 3.583 3.645 3.707 1.746 1.841 1.941 3.612 3.674 3.734 1.696 1.789 1.887 3.640 3.702 3.762 1.648 1.739 1.834 3.668 3.729 3.788 1.602...

  • Page 108: Wall Mounted Unit

    AIR CONDITIONING SYSTEMS WALL MOUNTED UNIT V:1.0.112023 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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