INVENTOR C1VI - 18 Service Manual
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INVENTOR C1VI - 18 Service Manual

INVENTOR C1VI - 18 Service Manual

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C1VI - 24 / C1VO - 24

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Summary of Contents for INVENTOR C1VI - 18

  • Page 1 C1VI - 18 / C1VO - 18 C1VI - 24 / C1VO - 24...

  • Page 2: Table Of Contents

    Table of Contents Summary and Features ................1.Safety Precautions ................2.Specifi cations ....................................2.1 Unit Specifi cations ..............2.2 Operation Characteristic Curve ........2.3 Capacity Variation Ratio According to Temperature ..................2.4 Operation Data ..........2.5 Noise Criteria Curve Tables for Both Models 3.
  • Page 3 8. Exploded Views and Parts List ..............................8.1 Indoor Unit ................... 8.2 Outdoor Unit 9. Troubleshooting ........................9.1 Precautions before Performing Inspection or Repair .................... 9.2 Confi rmation ....9.3 Flashing LED of Indoor/Outdoor Unit and Primary Judgement ............

  • Page 4: Summary And Features

    Summary and Features Summary and Features Indoor Unit C1VI-18 C1VI-24 Outdoor Unit C1VI18 C1VI-24 Remote Controller YB1FA...

  • Page 5: Safety Precautions

    Safety Precautions 1.Safety Precautions Make sure the outdoor unit is installed on a stable, level Installing, starting up, and servicing air conditioner can be hazardous due to system pressure, electrical components, and surface with no accumulation of snow, leaves, or trash equipment location, etc.

  • Page 6: Specifications

    Specifi cations 2.Specifications 2.1 Unit Specifi cations Model C1VI-18 / C1VO-18 220-240 Power Supply Phases Power Supply Mode Outdoor n i l y t i y t i n i l n i l y f i c i l 23-34 Model of indoor unit C1VI-18...
  • Page 7 Specifi cations C1VO-18 Compressor Manufacturer/Trademark MITSUBISHI ELECTRIC (GUANGZHOU)COMP n i l a l l º n i l º º fi - l i o Outdoor Unit Fan Motor Capacitor Air Flow Volume of Outdoor Unit l a i fl - c i t Isolation Permissible Excessive Operating Pressure...
  • Page 8 Specifi cations Model C1VI-24 / C1VO-24 220-240 Power Supply n i l y t i y t i n i l n i l y f i c i l 27-42 Model of indoor unit C1VI-24 fl - Diameter Length(DXL) 98X765 Fan Motor Cooling Speed(SH/H/M/L/ r/min...
  • Page 9 Specifi cations C1VO-24 Compressor Manufacturer/Trademark MITSUBISHI ELECTRIC (GUANGZHOU)COMP n i l a l l º n i l º º fi - l i o Outdoor Unit Fan Motor Capacitor Air Flow Volume of Outdoor Unit l a i fl - c i t Permissible Excessive Operating Pressure for the Discharge Side...

  • Page 10: Operation Characteristic Curve

    Specifi cations 2.2 Operation Characteristic Curve 220V 220V • Conditions Indoor : DB26.7˚C/WB19.4˚C Outdoor : DB35˚C/WB23.9˚C Indoor air flow : Turbo Pipe length : 5m 230V 230V 240V • Conditions 240V Indoor : DB21.1˚C/WB15.6˚C Outdoor : DB8.33˚C/WB6.11˚C Indoor air flow : Turbo Pipe length : 5m 10 20 30 40 50 60 70 80 90 100...

  • Page 11: Capacity Variation Ratio According To Temperature

    Specifi cations 2.3 Capacity Variation Ratio According to Temperature Conditions Conditions Indoor:DB26.7 C /WB19.4 Indoor:DB21.1 C /WB15.6 Indoor air flow:Turbo Indoor air flow:Turbo Pipe length:5m Pipe length:5m –1 5 –10 Outdoor tem p . (˚C) Outdoor tem p . (˚C) 2.4 Operation Data Cooling Temperature condition...

  • Page 12: Noise Criteria Curve Tables For Both Models

    Specifi cations 2.5 Noise Criteria Curve Tables for Both Models Indoor side noise when blowing Outdoor side noise High Super High Middle Indoor Fan Motor Rotating Speed Compressor frequency/Hz 18 24K...

  • Page 13: Construction Views

    Constrction Views 3. Construction Views 3.1 Indoor Unit Φ55 Φ55 Φ55 Φ55 Model 1007 Unit:mm...

  • Page 14: Outdoor Unit

    Constrction Views 3.2 Outdoor Unit...

  • Page 15: Refrigerant System Diagram

    Refrigerant System Diagram 4. Refrigerant System Diagram Heat exchanger 3-Way ( INDOOR ) valve Muffler 2-Way valve 4-Way valve Strainer Capillary Heat exchanger ( OUTDOOR ) Strainer Cooling Heating Refrigerant pipe diameter Liquid :1/4" (6 mm) Gas : 1/2" (12mm)

  • Page 16: Schematic Diagram

    Schematic Diagram 5. Schematic Diagram 5.1 Electrical Data Symbol Color symbol Symbol Color symbol BLACK BLUE YEGN YELLOW GREEN YELLOW WHITE VIOLET Symbol Parts name ORANGE BROWN PROTECTIVE EARTH 5.2 Electrical Wiring Indoor unit DISPLAY TUBE ROOM TEM.SENSOR TEM.SENSOR TUBE ROOM DISP1 DISP2...

  • Page 17: Outdoor Unit

    Schematic Diagram Outdoor unit C1VO-18 WA RNING Please don't touch any terminal when the aircondition is SA T COMP . running or during the 15 minutes after the aircondition 6YEGN stops to prevent the risk of electrical shock! COMP 4W H 5W H RT 3 RT 1...
  • Page 18 Schematic Diagram C1VO-24 WARNING Please don't touch any terminal when the voltage of terminal P(DC+) and N(DC-) at AP1 is higher than 30V to prevent the risk of electrical shock! 6YEGN COMP EXHAUST OUTTUBE OUTROOM TEM.SENSOR TEM.SENSOR TEM.SENSOR 1YE 2BU 3RD 15YE 17RD 16BU...

  • Page 19: Printed Circuit Board

    Schematic Diagram 5.3 Printed Circuit Board Indoor unit TOP VIEW Copper pin Auxiliary heating terminal of 3 Fan capacitor 4 Protective tube 5 Health relay K3 6 PG motor terminal relay K1, K2 neutral wire Terminal of Terminal of tube Up&down swing PG feedback ambient...
  • Page 20 Schematic Diagram Outdoor unit(18k) TOP VIEW Compressor Electric expansion Compressor interface Temperature sensor overloadprotector valve Communication Outdoor fan 6 4-way 4-way valve interface with indoor Live wire valve unit Neutral wire 10 Earthing wire 11 Reactor interface 12 Reactor interface 2 BOTTOM VIEW...
  • Page 21 Schematic Diagram Outdoor unit(24k) TOP VIEW Compressor overload Compressor interface Temperature sensor Electric expansion valve protector Communication interface Fan HALL interface Outdoor fan 4-way valve with indoor unit Live wire Earthing wire Neutral wire Reactor interface 1 PFC capacitor interface 1 Reactor interface 2 BOTTOM VIEW...

  • Page 22: Function And Control

    Function and Control 6. Function and Control 6.1 Remote Control Operations ON/OFF Press it to start or stop operation. MODE Press it to select operation mode (AUTO/COOL/DRY/FAN/HEAT). Press it to increase temperature setting. Press it to decrease temperature setting. Press it to set fan speed. Press it to set swing angle.

  • Page 23: Digital Display

    Function and Control LIGHT icon: is displayed by pressing the LIGHT button.Press LIGHT button again to clear the display. LOCK icon: is displayed by pressing "+" and “-” buttons simultaneously.Press them again to clear the display. SET TIME display: After pressing TIMER button, ON or OFF will blink.This area will show the set time. TURBO icon: is displayed when pressing theTURBO button.Press this button again to clear the display.

  • Page 24: Replacement Of Batteries

    Function and Control TIMER ON: Press this button to initiate the auto-ON timer. To cancel the auto-timer program, simply press this button again. After pressing this button, disappears and "ON" blinks . 0 0:00 is displayed for ON time setting. Within 5 seconds, press + or - button to adjust the time value.

  • Page 25: Description Of Each Control Operation

    Function and Control 6.2 Description of Each Control Operation 6.2.1 Functions of Indoor Unit 1.Basic function of system (1)Cooling mode 1.Under this mode, fan motor, swing will work under setting status, the temp. range is 16-30 (61-86 Fahrenheit scale) 2.Outdoor unit malfunction or unit stop running, indoor unit will keep origina l running status, malfunction displayed. 3.When 0 (Tset-Tamb.), if indoor fan motor is high speed, that the fan motorist running in middle speed, the middle speed or low speed will be maintained;(this condition should be executed when compressor start up);the super high speed will not rotate;...
  • Page 26 Function and Control 2. Display state of indoor indicators (1) State of indoor display board 1. When the unit is powered on, all patterns will be displayed and then only power indicator is on. When the unit is turned on with a remote controller, the operating indicator is on and operation mode which is set currently is displayed.
  • Page 27 Function and Control (4) Sleep function This mode is effective only in cooling and heating modes. Proper sleep curves shall be selected for operation according to preset temperature. In cooling mode: (1) When initial temperature is set at 16-23 , an increase of 1 will be gained every hour after the sleep function is activated. After 3 is raised, the temperature will be maintained.
  • Page 28 Function and Control (9) Locked Protection of PG Motor When starting up the fans, if the motor has run at a lower speed continuously for a period, for preventing automatic protection of the motor, stop running, and display the locked operation; if the machine is running at present, the code of the locked fault---H6 of double-eight digital tubes will be displayed;...

  • Page 29: Cooling Mode

    Function and Control 6.2.2 Functions of Outdoor Unit 1. Input Parameter Compensation (1) Input parameter compensation function As the structure feature of split unit, concerning the comfort, in heating mode, when compressor stops, the indoor ambient temperature is higher than preset temperature for 3 2.

  • Page 30: Outdoor Fan Control

    Function and Control 8.5 In all modes: once the compressor stops, it can’t restart within 3-minute (Note: The indoor units with memory function can be restarted after remote shutdown and powering on again without delay). 9. Outdoor Fan Control 9.1 When the unit is off by remote control in safety stops or stops after reaching the setting temperature, 1min later,the outdoor fan will stop;...
  • Page 31 Function and Control 16. Communication malfunction If the unit does not receive correct signal from indoor unit for 3min continuously, the unit will stop as communication malfunction protection; if communication malfunction has removed and compressor has stopped for 3min, the unit will resume running. 17.

  • Page 32: Installation Manual

    Installation Manual 7. Installation Manual 7.1 Notices for Installation Caution 1.The unit should be installed only by authorized service center according to local or government regulations and in compliance with this manual. 2.Before installing, please contact with local authorized maintenance center. If the unit isnot installed by the authorized ser vice center, the malfunction may not be solved due to incovenient contact between the user and the service personnel.
  • Page 33 Installation Manual Installation Site of Outdoor Unit 7.1.3 1.Select a site where n oise and outflow air emitted by the unit w ill not annoy neighbors. 2.Select a site where t here is sufficient ventilation . 3.Select a site where there is no obstruction blocking the inlet and outlet . 4 .The site s hould be able to withstand t he f ull weight and v ibration.

  • Page 34: Installation Dimension Diagram

    Installation Manual 7.2 Installation Dimension Diagram Space to the ceiling 15cm Above Space to the wall 15cm Above 15cm Above Space to the wall Above Above Air outlet side Space to the floor The dimensions of the space necessary for proper installation of the unit includ e the minimum permissible distances to adjacent parts .

  • Page 35: Install Indoor Unit

    Installation Manual 7.3 Install Indoor Unit 7.3.1 Installing of Mounting Plate 1.Mounting plate should be installed horizontally. As the water tray's oulet for the indoor unit is two-way type, during installation, the indoor unit should slightly slant to water tray's outlet for smooth drainage of condensate. 2.Fix the m ounting plate on the wall with s crews .

  • Page 36: Install Outdoor Unit

    Installation Manual NOTE: All wires between indoor and outdoor units must be connected by the qualified electric contractor. Electric wires must be connected correctly. Improper connection may cause malfunction. Tighten the terminal screws securely. After tightening the screws, pull the wire sligltly to confirm whether it's firm or not. Make sure that the electric connections are earthed properly to prevent electric shock.

  • Page 37: Check After Installation And Test Operation

    Installation Manual 7.4.2 Air Purging and Leakage Test 1. Connect charging hose of manifold valve to charge end of low pressure valve Manifold Valve (both high/low pressure valves must be tightly shut). Multimeter Manometer 2. Connect joint of charging hose to vacuum pump. -76cmHg Hi handle Lo Handle...

  • Page 38: Installation And Maintenance Of Healthy Filter

    Installation Manual 7.5.2 Operation Test 1.Before Operation Test (1)Do not switch on power before installation is finished completely. (2)Electric wiring must be connected correctly and securely. (3)Cut-off valves of the connection pipes should be opened. (4)All the impurities such as scraps and thrums must be cleared from the unit. 2.Operation Test Method (1)Switch on power and press "ON/OFF"...

  • Page 39: Exploded Views And Parts List

    Exploded Views and Parts list 8. Exploded Views and Parts List 8.1 Indoor Unit C1VI-18...
  • Page 40 Exploded Views and Parts list Part Code Description C1VI-18 Product Code CB171N05000 t l i fl f c i l e l i l l a e l i t i c Ambient Temperature Sensor 390000453 l l o The data above are subject to change without notice.
  • Page 41 Exploded Views and Parts list C1VI-24...
  • Page 42 Exploded Views and Parts list Part Code Description C1VI24 Product Code CB171N05100 t l i c i l e l i Rubber Plug (Water Tray) 76712012 O-Gasket sub-assy of Bearing 76512051 l l a e l i t i c Ambient Temperature Sensor 390000453 l l o...

  • Page 43: Outdoor Unit

    Exploded Views and Parts list 8.2 Outdoor Unit C1VO-18...
  • Page 44 Exploded Views and Parts list Part Code Description C1VO-18 Product Code CB172W02500 t i c a l l l i o fi l a i l l i r The data above are subject to change without notice.
  • Page 45 Exploded Views and Parts list C1VO-24 10 11 12 29 28...
  • Page 46 Exploded Views and Parts list Part Code Description C1VO-24 Product Code CB172W02600 fi ( fi t i c l l i r t i c t i c a l l l i o fi l a i l l i r The data above are subject to change without notice.

  • Page 47: Troubleshooting

    Troubleshooting 9. Troubleshooting 9.1 Precautions before Performing Inspection or Repair Be cautious during installation and maintenance. Do operation following the regulations to avoid electric shock and casualty or even death due to drop from high attitude. * Static maintenance is the maintenance during de-energization of the air conditioner. For static maintenance, make sure that the unit is de-energized and the plug is disconnected.

  • Page 48: Confi Rmation

    Troubleshooting C1V0-18 Electric discharge position: Plug of electric iron C1V0-24 Electric discharge position: Plug of electric iron 9.2 Confi rmation (1)Confi rmation of Power Supply Confi rm that the power breaker operates(ON) normally; (2)Confi rmation of Power Voltage Confi rm that power voltage is AC 220-240 ±10%. If power voltage is not in this range, the unit may not operate normally. 9.3 Flashing LED of Indoor/Outdoor Unit and Primary Judgement...
  • Page 49 Troubleshooting Display Method of Outdoor Unit (Indicator has 3 kinds Display Method of Indoor Unit of display status and they will be displayed circularly every 5s.) Malfunction A/C status Possible Cause s Name Indicator Display (during blinking, Illuminated ON 0.5s and OFF 0.5s) Dual-8 Blink Code...
  • Page 50 Troubleshooting Display Method of Outdoor Unit (Indicator has 3 kinds Display Method of Indoor Unit of display status and they will be displayed Malfunction circularly every 5s.) A/C status Possible Reasons Name Indicator Display (during blinking, Illuminated Dual-8 ON 0.5s and OFF 0.5s) Blink Code Display...
  • Page 51 Troubleshooting Display Method of Outdoor Unit (Indicator has 3 kinds Display Method of Indoor Unit of display status and they will be displayed Malfunction circularly every 5s.) A/C status Possible Reasons Name Indicator Display (during blinking, Illuminated Dual-8 ON 0.5s and OFF 0.5s) Blink Code Display...
  • Page 52 Troubleshooting Display Method of Outdoor Unit (Indicator has 3 kinds Display Method of Indoor Unit of display status and they will be displayed Malfunction circularly every 5s.) A/C status Possible Reasons Name Indicator Display (during blinking, Illuminated Dual-8 ON 0.5s and OFF 0.5s) Blink Code Display...

  • Page 53: How To Check Simply The Main Part

    Troubleshooting 9.4 How to Check simply the main part 4.1 Indoor unit: (1)Temperature sensor malfunction Start Is the wiring terminal between temperature sensor and the controller loosened or poor ly contacted? Insert the temperature sensor tightly Malfunction is eliminated. Is there short circuit due to tri-pover of the pa rts? Make the parts upright Malfunction is...
  • Page 54 Troubleshooting (2)PG motor (indoor fan) does not operate (H6) Possible causes: 1. Fan motor is locked; 2. The.feedback.terminal of PG motor is not connected tightly; 3. The control terminal of PG motor is not connected tightly; 4. Motor is damaged; 5.
  • Page 55 Troubleshooting (3)Jumper cap malfunction (C5) Possible causes: 1. There is no jumper cap on the controller; 2. Jumper cap is not inserted properly and tightly; 3. Jumper cap is damaged; 4. Controller is damaged. See the chart below: C5 is displayed on the unit.
  • Page 56 Troubleshooting 4.2 Outdoor unit: (1)Key detection point C1VO-18 Test2 Test4 Test3 Test1 Test9 Tset8 Test7 Test5 Test6 Test10 Test12 Test13 Test11...
  • Page 57 Troubleshooting Test point v i l v i l Test 3 Between D and E Electrolytic capacitor of DC bas bar DC 180V-380V Test 4 Between F and G Electrolytic capacitor of switch power DC 180V-380V Both ends of diode Test 5 Both ends...
  • Page 58 Troubleshooting C1VO-24 Test9 Test3 Test4 Test2 Test1 Test5 Test7 Tset8 Test6 Test12 Test10 Test14 Test11 Test13...
  • Page 59 Troubleshooting Test point v i l v i l Test 3 Between D and E Electrolytic capacitor of DC bas bar DC 180V-380V Test 4 Between F and G Electrolytic capacitor of switch power DC 180V-380V Both ends of diode Test 5 Both ends of sheet Test 6...
  • Page 60 Troubleshooting (2) Capacity charging malfunction (outdoor unit malfunction) (AP1 below is control board of outdoor unit) Main detection point: Detect if the voltage of L and N terminal of wiring board is between 210AC-240AC by alternating voltage meter; Is reactor (L) well connected? Is connection wire loosened or pull-out? Is reactor (L) damaged? Malfunction diagnosis process: Turn on the unit and wait 1 minute...
  • Page 61 Troubleshooting (3) IPM protection, desynchronizing malfunction, phase current of compressor is overcurrent (AP1 below is control board of outdoor unit) Main detection point: If control board AP1 and compressor COMP is well connected? If they are loosened? If the connection sequence is correct? Is voltage input in the normal range (Test the voltage between L, N of wiring board XT by DC voltage meter)? If coil resistance of compressor is normal? Is compressor coil insulating to copper pipe well?
  • Page 62 Troubleshooting Energize and switch on Use AC voltmeter If the voltage Check the supply to measure the IPM protection between terminal L voltage and voltage between occurs after the and N on wiring machine has run for terminal L and N restore it to board XT is within a period of time?
  • Page 63 Troubleshooting (4) Diagnosis for anti-high temperature, overload protection (AP1 below is control board of outdoor unit) Main detection point: If the outdoor ambient temperature is in normal range; If the indoor and outdoor fan is running normal; If the radiating environment of indoor and outdoor unit is well. Malfunction diagnosis process: Anti-high temperature, overload protection...
  • Page 64 Troubleshooting (5) Diagnosis for failure start up malfunction (AP1 below is control board of outdoor unit) Main detection point: If the compressor wiring is correct? If the stop time of compressor is enough? If the compressor is damaged? If the refrigerant charging is too much? Malfunction diagnosis process: Energize the unit and start it...
  • Page 65 Troubleshooting (6) Diagnosis for compressor synchronism (AP1 below is control board of outdoor unit) Main detection point: If the system pressure is over-high? If the work voltage is over-low? Malfunction diagnosis process: Synchronism Synchronism after energize the unit occurred during and start it operation Check if the fan...
  • Page 66 Troubleshooting (7) Diagnosis for overload and discharge malfunction (AP1 below is control board of outdoor unit) Main detection point: If the electron expansion valve is connected well? Is the expansion valve damaged? If the refrigerant is leakage? If the overload protector is damaged? Malfunction diagnosis process: After the unit de-energized...
  • Page 67 Troubleshooting (8) PFC (correction for power factor) malfunction (outdoor unit malfunction) (AP1 below is control board of outdoor unit) Main detection point: Check if reactor (L) of outdoor unit and PFC capacity are damaged Malfunction diagnosis process: Start Check the connection wire of reactor (L) of outdoor unit and...
  • Page 68 Troubleshooting (9) Communication malfunction (AP1 below is control board of outdoor unit) Main detection point: Check if the connection wire and the built-in wiring of indoor and outdoor unit is connected well and no damaged; If the communication circuit of indoor mainboard is damaged? If the communication circuit of outdoor mainboard (AP1) is damaged? Malfunction diagnosis process: Start...
  • Page 69 Troubleshooting (10) Diagnosis process for outdoor communication circuit: Start Test voltage value with Test 12 position in diagram with voltage meter Number jumping Test voltage value with Test 13(18K) 11(24K) position in diagram with voltage meter Number jumping Outdoor unit Test voltage malfunction value with Test...
  • Page 70 Troubleshooting Appendix 1: Resistance Table for Indoor and Outdoor Ambient Temperature Sensors (15K) Temp( ) Resistance(kΩ) Temp( ) Resistance(kΩ) Temp( Resistance(kΩ) Temp( ) Resistance(kΩ) 138.1 18.75 3.848 1.071 128.6 17.93 3.711 1.039 121.6 17.14 3.579 1.009 16.39 3.454 0.98 108.7 15.68 3.333 0.952...
  • Page 71 Troubleshooting Appendix 2: Resistance Table for Indoor and Outdoor Tube Temperature Sensor (20K) Temp( ) Resistance(kΩ) Temp( ) Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 181.4 25.01 5.13 1.427 171.4 23.9 4.948 1.386 162.1 22.85 4.773 1.346 153.3 21.85 4.605 1.307 20.9 4.443 1.269 137.2...
  • Page 72 Troubleshooting Appendix 3: Resistance Table for Outdoor Discharge Temperature Sensor (50K) Temp( Resistance(kΩ) Temp( ) Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 853.5 18.34 4.75 799.8 93.42 17.65 4.61 89.07 16.99 4.47 703.8 84.95 16.36 4.33 660.8 81.05 15.75 4.20 620.8 77.35 15.17 4.08 580.6...

  • Page 73: Removal Procedure

    Removal Procedure 10. Removal Procedure 10.1 Removal Procedure of Indoor Unit Warning Be sure to wait for a minimum of 10 minutes after turning off all power supplies before disassembly. Procedure Steps 1. Remove filter Open the panel Loosen the clasps on filter. Clasp Remove the filter.
  • Page 74 Removal Procedure 3. Remove horizontal louver Disassemble the axial bush on horizontal louver, bend the horizontal louver to let the shaft come out of the groove and then re- move the horizontal louver. Horizontal louver 4. Remove electric box cover 2 Twist off one screw on electric box cover 2, and then remove the electric box cover 2.
  • Page 75 Removal Procedure 5. Remove swing blade Clasp Loosen the clasps on horizontal louver and then remove the swing blade. 6. Remove front case Open the screw cap on front case, and twist off the 7 screws fixing the front case with screwdriver.
  • Page 76 Removal Procedure Steps Procedure Front case Remove the front case. 7. Remove electric box cover Pull out the axial bush on tempera- ture sensor. Twist off the screws fixing the earthing wire with screwdriver. Pull out the electric box cover. Electric box cover...
  • Page 77 Removal Procedure 8. Remove electric box Twist off the screws fixing the displayer with screwdriver. Screw Pull out the wiring terminal on displayer. Display board Pull out the connection wire between swing motor and motor. Twist off the screws fixing the electric box with screwdriver.
  • Page 78 Removal Procedure Steps Procedure Remove the electric box. Electric box 9. Remove evaporator Twist off the screws fixing the pipe press plate with screwdriver. Screw Pipe press plate Remove the pipe press plate. Twist off the 3 screws fixing the evapora- tor with screwdriver.
  • Page 79 Removal Procedure Steps Procedure Loosen the clasps between evaporator and chassis. Adjust the pipeline slightly Evaporator Remove the evaporator.
  • Page 80 Removal Procedure 10. Remove motor and cross flow blade Twist off the screws fixing the motor press plate with screwdriver. Remove the motor press plate. Cross flow blade Motor Remove cross flow blade and motor. Twist off the screws fixing the swing motor with screwdriver.
  • Page 81 Removal Procedure Remove swing motor. Twist off the screws fixing the cross flow blade and swing motor with screwdriver. Cross flow blade Motor Remove the motor.

  • Page 82: Removal Procedure Of Outdoor Unit

    Removal Procedure 10.2 Removal Procedure of Outdoor Unit Warning Be sure to wait for a minimum of 10 minutes after turning off all power supplies before disassembly. (not show electric heating tape) 1. Remov e top p anel Appearance Twist off the screws used for fixing the handle, pull the handle up ward to remove it .
  • Page 83 Removal Procedure Remove the 5 screws connecting the panel with the chassis and the motor support, and then remove the panel. panel 3. Remove left side plate and right side plate Remove the screws connecting the right side plate with the chassis, the valve support and the electric box, and then remove the right side plate assy.
  • Page 84 Removal Procedure 4. Remove fan motor Remove the nuts fixing the blade and then axial flow blade remove the axial flow blade. fan motor fixing frame Remove the 4 tapping screws fixing the motor; disconnect the leading wire insert of the motor and then remove the motor.Remove the 2 tapping screws fixing the motor support and then pull the motor support upwards to remove it.
  • Page 85 Removal Procedure 6.Remove soundproof sponge Since the piping ports on the soundproof sponge are torn easily, remove the soundproof sponge carefully. soundproof sponge 7. Remove isolation sheet Remove the 3 screws fixing the isolation sheet and then remove the Isolation sheet. Isolation sheet...
  • Page 86 Removal Procedure 8.Remove 4-way valve assy Discharge the refrigerant completely;unsolder the pipelines connecting the compressor and the condenser assy, and then remove the 4-way valve assy. 4-way valve assy 9. Remov e compressor compressor Remove the 3 foot nuts fixing the compressor, and then remove the compressor.
  • Page 87 Removal Procedure Remove the chassis sub-assy and condenser condenser sub-assy sub-assy. chassis sub-assy...
  • Page 88 Removal Procedure Warning Be sure to wait for a minimum of 10 minutes after turning off all power supplies before disassembly. (not show electric heating tape) 1. Remove top panel Handle and Twist off the screws used for fixing the handle, pull the handle up ward to remove it Handle Remove the 3 screws connecting the top...
  • Page 89 Removal Procedure Remove the 5 screws connecting the panel with the chassis and the motor support, and then remove the panel. panel 3. Remove left side plate and right side plate Remove the screws connecting the right side plate with the chassis, the valve support and the electric box, and then remove the right side plate assy.
  • Page 90 Removal Procedure 4. Remove fan motor Remove the nuts fixing the blade and then axial flow blade remove the axial flow blade. fan motor fixing frame Remove the 4 tapping screws fixing the motor; disconnect the leading wire insert of the motor and then remove the motor.
  • Page 91 Removal Procedure 6.Remove fireproof electric box and soundproof sponge Fireproof electric box Twist off the screws on fireproof electric box and then remove the fireproof electric box. Since the piping ports on the soundproof sponge are torn easily, remove the soundproof sponge carefully. soundproof sponge 7.
  • Page 92 Removal Procedure 8. Remov e 4-way valv e assy Discharge the refrigerant completely;unsolder 4-way valve assy the pipelines connecting the compressor and the condenser assy,and then remove the 4-way valve assy. 9. Remov e compressor compressor Remove the 3 foot nuts fixing the compressor and then remove the compressor.
  • Page 93 Removal Procedure condenser sub-assy Remove the chassis sub-assy and condenser sub-assy. chassis sub-assy...

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