Air-Con ACZEM4H4R09 Service Manual
Air-Con ACZEM4H4R09 Service Manual

Air-Con ACZEM4H4R09 Service Manual

Refrigerant r410a
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Service Manual
MODEL: ACZEM4H4R09/ACZCI4H4R09
ACZEM4C4R12/ACZCI4C4R12
ACZEM4H4R12/ACZCI4H4R12
(Refrigerant R410A)
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

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  • Page 1 Service Manual MODEL: ACZEM4H4R09/ACZCI4H4R09 ACZEM4C4R12/ACZCI4C4R12 ACZEM4H4R12/ACZCI4H4R12 (Refrigerant R410A) GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI...
  • Page 2: Table Of Contents

    Service Manual Table of Contents Part Ⅰ : Technical Information ................. 1 1. Summary ........................1 2. Specifications ......................2 2.1 Specification Sheet ......................2 2.2 Operation Characteristic Curve ..................6 2.3 Capacity Variation Ratio According to Temperature ............6 2.4 Cooling and Heating Data Sheet in Rated Frequency ............
  • Page 3 Service Manual 9. Maintenance ......................... 32 9.1 Malfunction Analysis ......................32 9.2 Flashing LED of Indoor/Outdoor Unit and Primary Judgement ........... 36 9.3 How to Check Simply the Main Part ..................43 10. Exploded View and Parts List ..............56 10.1 Indoor Unit .........................
  • Page 4: Part Ⅰ : Technical Information

    Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit: ACZEM4H4R09 ACZEM4C4R12 ACZEM4H4R12 Outdoor Unit: ACZCI4H4R09 ACZCI4C4R12 ACZCI4H4R12 Remote Controller: YX1FF Technical Information...
  • Page 5: Specifications

    Service Manual 2. Specifications 2.1 Specification Sheet Model ACZEM4H4R09/ACZCI4H4R09 Product Code CB162008200_L14385 Rated Voltage 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Btu/h Cooling Capacity (Min~Max) 9000(5000~11300) Btu/h Heating Capacity (Min~Max) 9550(5300~12000) Cooling Power Input (Min~Max) 950(375~1300) Heating Power Input (Min~Max)
  • Page 6 Service Manual Outdoor Unit Model ACZCI4H4R09 Outdoor Unit Product Code CB145W04400_L14385 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO.,LTD QXA-A091zE190A(GREE) Compressor Model FVC 68D or RB 68EP Compressor Oil Compressor Type Rotary Compressor LRA. Compressor RLA 7.30 Compressor Power Input 1NT11L-6233HPC115/95U1 Compressor Overload Protector KSD115 Throttling Method Capillary...
  • Page 7 Service Manual Model ACZEM4C4R12/ACZCI4C4R12 ACZEM4H4R12/ACZCI4H4R12 Product Code CB162008700_L17107 CB162008100_L14385 Rated Voltage 208/230 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Btu/h Cooling Capacity (Min~Max) 12000(5300~12500) 12000(5300~12500) Btu/h Heating Capacity (Min~Max) 13000(5500~13500) Cooling Power Input (Min~Max) 1300(550~1350) 1300(550~1350) Heating Power Input (Min~Max) 1250(500~1500) Cooling Current Input...
  • Page 8 Service Manual Outdoor Unit Model ACZCI4C4R12 ACZCI4H4R12 Outdoor Unit Product Code CB145W04500_L17107 CB145W04600_L14385 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer CO.,LTD CO.,LTD QXA-A091zE190A(GREE) QXA-A091zE190A(GREE) Compressor Model FVC 68D or RB 68EP FVC 68D or RB 68EP Compressor Oil Compressor Type Rotary Rotary Compressor LRA.
  • Page 9: Operation Characteristic Curve

    Service Manual 2.2 Operation Characteristic Curve Cooling Heating •Conditions •Conditions 15.0 15.0 Indoor DB 80F/WB 67F Indoor : DB 70F/WB 60F 13.5 13.5 Outdoor : DB 95F/WB75F Outdoor : DB 47F/WB 43F Indoor air flow : Turbo Indoor air flow : Turbo 12.0 12.0 Pipe length : 24.6 ft.
  • Page 10: Cooling And Heating Data Sheet In Rated Frequency

    (Hz) Indoor Outdoor T1 (°F) T2 (°F) P (MPa) 54 to 57 158 to 104 Super High High 80/67 95/75 ACZEM4H4R09/ACZCI4H4R09 0.9 to 1.1 ACZEM4C4R12/ACZCI4C4R12 54 to 57 158 to 104 Super High High 27/19 35/24 0.9 to 1.1 ACZEM4H4R12/ACZCI4H4R12...
  • Page 11: Outline Dimension Diagram

    Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 33 1/4 21 1/3 6 3/4 2 1/6 2 1/6 21/4 4 7/8 Unit: inch 3.2 Outdoor Unit 25 8/9 10 4/5 12 1/2 18 1/2 Unit: inch Technical Information...
  • Page 12: Refrigerant System Diagram

    Service Manual 4. Refrigerant System Diagram Cooling only type Outdoor unit Indoor unit Gas pipe side Valve Di s charge Heat exchanger Suction (evaporator) Accumlator Compressor Heat exchanger (condenser) Liquid pipe side Valve Capillary Strainer COOLING Cooling and heating type Outdoor unit Indoor unit Gas pipe...
  • Page 13: Electrical Part

    Service Manual 5. Electrical Part 5.1 Wiring Diagram ●Instruction Symbol Symbol Color Symbol Symbol Color Symbol Name White Green Jumper cap Yellow Brown COMP Compressor Blue Grounding wire YEGN Yellow/Green Black Violet Orange Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model. ●...
  • Page 14 Service Manual ● Outdoor Unit ACZCI4C4R12 ACZCI4H4R09 ACZCI4H4R12 These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit. Technical Information...
  • Page 15: Pcb Printed Diagram

    Service Manual 5.2 PCB Printed Diagram Indoor Unit ● Top view Live wire interface Fuse Neutral wire interface PG motor interface Communication port of neutral wire and live wire Auto button Up & down swing interface PG feedback interface Display interface Ambient temperature sensor Tube temperature...
  • Page 16 Service Manual Outdoor Unit ● Top view Compressor UVW three phases Reactor interface 2 Reactor interface 1 Fan interface 4-way valve interface Power supply neutral wire Power supply neutral wire Communication wire Overload input Temperature sensor interface ● Bottom view Technical Information...
  • Page 17: Function And Control

    Service Manual 6. Function and Control 6.1 Remote Controller Introduction Buttons on Remote Controller ON/OFF button T-ON T-OFF AUTO MODE button SWING COOL SLEEP LOCK SPEED HEAT +/- botton MODE ON/OFF FAN button SWING SWING button SLEEP TIMER SLEEP button TIMER button Icon Display on Remote Controller Timer on Timer off...
  • Page 18 Service Manual When selecting auto mode,air conditoner will operate automatically according to ambient temperature.Set temperature can't be When selecting auto mode, air conditioner will operate automatically according to ex-factory setting. Set temperature can't be adjusted and won't be displayed either.Press FAN button to adjust fan speed. adjusted and won't be displayed either.
  • Page 19 Service Manual Replacement of Batteries in Remote Controller battery 1. Press the back side of remote controller on the spot marked with , and then push out the cover of battery box along the arrow direction. 2. Replace two No.7 (AAA 1.5V) dry batteries and make sure the positions of + and -- polar are correct.
  • Page 20: Brief Description Of Modes And Functions

    Service Manual 6.2 Brief Description of Modes and Functions (1) Cooling Mode ① Working conditions and process of cooling When Tamb.≥Tpreset, the unit will enter cooling operation, in which case the indoor fan, the outdoor fan and the compressor will work and the indoor fan will run at preset speed.
  • Page 21 High fan Medium Low fan Turbo Models Mode speed fan speed speed Cooling 1260 1100 ACZEM4H4R09 Heating 1320 1200 1100 ACZEM4C4R12 Cooling 1330 1100 ACZEM4H4R12 Heating 1350 1170...
  • Page 22 Service Manual e timer function is set in the last control before it is de-energized, the system last control and the setting time is reached before the unit is de-energized, the unit will run according to the previous running mode after it is energized again.
  • Page 23 when the frequency droops.For limiting lower limitFrequency management is carried out only when the frequency rises. 4.Upper and lower limit of frequency by PI controlThe frequency upper and lower limits are set depending on indoor unit.When low noise commands come from the indoor unit or when outdoor unit low noise or quiet commands come from indoor unit, theupper limit Service Manual frequency must be lowered than the usual setting.
  • Page 24 If a “drooping current” is continues for 1.0 second after rushing on the drooping zone, the frequency will be 2 Hz drooping. Repeating the above drooping continues until the current rushes on the drooping zone without change. In the keep zone, the frequency limit will remain. Service Manual In the return / reset zone, the frequency limit will be cancelled.
  • Page 25 system is in heating operation, 6 minutes after the compressor is started and more than 44 minutes of accumulated time pass since the start of the operation or ending the defrosting. 2.Conditions for Canceling Defrost Service Manual The judgment must be made with heat exchanger temperature. (39°F~72°F) PI control Frequency 60sec.
  • Page 26: Part Ⅱ : Installation And Maintenance

    Service Manual Part Ⅱ : Installation and Maintenance 7. Notes for Installation and Maintenance Safety Precautions: 10. If the power cord or connection wire is not long enough, please get the specialized power cord or connection wire Important! from the manufacture or distributor. Prohibit prolong the wire by yourself.
  • Page 27 Service Manual Main Tools for Installation and Maintenance 1. Level meter, measuring tape 2. Screw driver 3. Impact drill, drill head, electric drill 4. Electroprobe 5. Universal meter 6. Torque wrench, open-end wrench, inner hexagon spanner 7. Electronic leakage detector 8.
  • Page 28: Installation

    Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall Space to the wall At least 5 8/9 inch At least 5 8/9 inch Space to the obstruction Air inlet side 11 4/5 Above Space to the wall Space to the wall 19 2/3 Above Unit: inch...
  • Page 29 Service Manual Installation procedures Start installation Preparation before installation Read the requirements select installation Prepare tools for electric connection location Select indoor unit Select outdoor unit installation location installation location Install the support of outdoor unit Install wall-mounting (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor Fix outdoor unit...
  • Page 30: Installation Parts-Checking

    Connecting conditioner. cable(power cord) remote controller Air switch capacity Wall pipe Air-conditioner ACZEM4H4R09/ACZCI4H4R09 Note: 1.Please contact the local agent for installation. ACZEM4C4R12/ACZCI4C4R12 2.Don't use unqualified power cord. ACZEM4H4R12/ACZCI4H4R12 (4) Properly connect the live wire, neutral wire and grounding wire of power socket.
  • Page 31 Service Manual in the holes. 5. Connect the Pipe of Indoor Unit (3) Fix the wall-mounting frame on the wall with tapping screws (1) Aim the pipe joint at the corresponding bellmouth.(As show (ST4.2X25TA) and then check if the frame is firmly installed by in Fig.5) pulling the frame.
  • Page 32 Service Manual 7. Connect Wire of Indoor Unit 8. Bind up Pipe (1) Open the panel, remove the screw on the wiring cover and (1) Bind up the connection pipe, power cord and drain hose then take down the cover.(As show in Fig.11) with the band.(As show in Fig.14) (2) Reserve a certain length of drain hose and power cord Panel...
  • Page 33: Installation Of Outdoor Unit

    Service Manual Refer to the following table for wrench moment of force: 8.6 Installation of Outdoor Unit 1. Fix the Support of Outdoor Unit(select it according to the Hex nut diameter(inch) Tightening torque(ft·Ibf) actual installation situation) Φ1/4 11.10~14.75 (1) Select installation location according to the house structure. Φ3/8 22.82~29.50 (2) Fix the support of outdoor unit on the selected location with...
  • Page 34: Vacuum Pumping And Leak Detection

    Service Manual Note: 2. Leakage Detection (1) The through-wall height of drain hose shouldn't be higher (1) With leakage detector: than the outlet pipe hole of indoor unit.(As show in Fig.25) Check if there is leakage with leakage detector. (2) Slant the drain hose slightly downwards. The drain hose (2) With soap water: can't be curved, raised and fluctuant, etc.(As show in Fig.26) If leakage detector is not available, please use soap water for...
  • Page 35: Maintenance

    Service Manual 9. Maintenance 9.1 Malfunction Analysis Note: When replacing the controller, be sure to insert the wire jumper into the new controller, otherwise the unit will display C5 Measure insulation resistance The breaker trips at once when it to ground to see if there is any is set to “ON”.
  • Page 36 Service Manual Improper set of temperature Adjust set temperature If cooling (heating) load is Check the forecasted load of cooling (heating) proper Check and fill the leakage, then The refrigerant has leakage or is vacuumize it and supplement the re- insufficient frigerant as required Leakage between the high pres-...
  • Page 37 Service Manual The indoor fan motor is burned or breaks or has the heat protector Replace the fan motor or the defective part. malfunction. The built-in heat protector of the Replace the fan motor The fan does not motor breaks frequently because the run when it is set motor is abnormal.
  • Page 38 Service Manual The torque of the swing motor is not enough First, check whether the connection is Wrong connection The swing fan wrong. If no, replace the parts does not run. The controller is damaged(IC2003 is damaged, the swing relay can not close, etc) C o n t r o l l e r m a l f u n c t i o n ( I C 2 0 0 3 Change controller...
  • Page 39: Flashing Led Of Indoor/Outdoor Unit And Primary Judgement

    Service Manual 9.2 Flashing LED of Indoor/Outdoor Unit and Primary Judgement Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF...
  • Page 40 Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
  • Page 41 Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
  • Page 42 Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
  • Page 43 Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
  • Page 44 Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
  • Page 45 Service Manual Display Method of Indoor Unit Display Method of Outdoor Unit Indicator Display (during Indicator has 3 kinds of display blinking, ON 0.5s and OFF status and during blinking, ON Dual-8 Malfunction A/C status Possible Causes 0.5s) 0.5s and OFF 0.5s Code Name Operation...
  • Page 46: How To Check Simply The Main Part

    Service Manual 9.3 How to Check Simply the Main Part Confirm the malfunction type according to the malfunction indicator of indoor/outdoor unit and malfunction sheet (usually the sheet will be stuck on the electric box cover or top cover of the unit). As long as there is a malfunction, the indicator of the outdoor controller board will display the corresponding malfunction directly;...
  • Page 47 Service Manual 1.Malfunction of Temperature Sensor F1,F2 Troubleshooting for F1,F2 malfunction the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? Insert the temperature sensor tightly Is malfunction eliminated Is there short circuit due to trip - over of the parts? Make the parts upright Is malfunction...
  • Page 48 Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 Troubleshooting for H6 malfunction Stir the blade with a tool to see whether the blade rotates smoothly Tighten the screw; reassemble the blade, motor and shaft bearing rubber base sub-assy to make sure there is no foreign object between them Is malfunction eliminated...
  • Page 49 Service Manual 3. Malfunction of Protection of Jumper Cap C5 Troubleshooting for C5 malfunction Appearance of Is there jumper cap on the the jumper cap mainboard ? Assemble the jumper cap with the same model Is malfunction eliminated the jumper cap inserted correctly and tightly ? Insert the...
  • Page 50 Service Manual 4. Communication malfunction E6 Start Cut off power, check if the wire between indoor unit and outdoor unit, and the wire inside electric box are connected correctly Reconnect the wire Malfunction is according to Connected correctly? eliminated wiring diagram Is there incorrect Match them match between the mainboard...
  • Page 51 Service Manual 5. Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8 Troubleshooting for U8 malfunction Re-energize1 minute after de-erergization The unit returns to normal. Conclusion:U8 is displayed due U8 is still to instant energization afte de- displayed energization while the capacitor discharges slowly.
  • Page 52 Service Manual 6. IPM protection, desynchronizing malfunction, phase current of compressor is overcurrent (outdoor unit malfunction) 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? ●If the work load of unit is heavy? If radiating of unit is well? If the refrigerant charging is appropriate? Malfunction diagnosis process:...
  • Page 53 Service Manual Energize and switch on Use AC voltmeter Check the supply to measure the If the voltage IPM protection voltage and voltage between between terminal L and N on wiring occurs after the machine has run for restore it to terminal L and N board XT is within a period of time?
  • Page 54 Service Manual 7. Diagnosis for high temperature, overload protection (check outdoor unit in cooling mode and check indoor unit in heating mode) Main detection point: ●If the outdoor ambient temperature is in normal range; ●If the indoor and outdoor fan is running normally; ●If the radiating environment inside and outside the unit is well (including if the fan speed is too low)? ●If the tube temperature sensor of indoor and outdoor unit is normal? Malfunction diagnosis process:...
  • Page 55 Service Manual 8. Diagnosis for failure start up malfunction (outdoor unit malfunction) 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 56 Service Manual 9. Diagnosis for compressor synchronism (outdoor unit malfunction) Main detection point: ●If the system pressure is over-high? ●If the working voltage is over-low? Malfunction diagnosis process: Synchronism Synchronism after occurred during energize the unit operation and start it Check if the fan Replace fan If the stop time of...
  • Page 57 Service Manual 10. Diagnosis for overload and discharge malfunction (outdoor unit malfunction) 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? ●If the discharge temp sensor is damaged? Malfunction diagnosis process: After the u nit de-energized...
  • Page 58 Service Manual 11. Communication malfunction 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 If the unit is operating...
  • Page 59: Exploded View And Parts List

    Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit Installation and Maintenance...
  • Page 60 Service Manual Part Code Description ACZEM4H4R09 Product Code CB162N08200_L14385 Front Panel Sub-Assy 20012558_L14385 Filter Sub-Assy 1112220403 Front Case Sub-assy 2001213931 Guide Louver 10512157 Axile Bush 10542036 Rear Grill 01472013 Air Louver 2 10512165 Helicoid Tongue 26112163C Left Axile Bush 10512037...
  • Page 61 Service Manual Part Code Description ACZEM4C4R12 ACZEM4H4R12 Product Code CB162N08700_L17107 CB162N08100_L14385 Front Panel Sub-Assy 20012830_L17107 20012830_L14385 Filter Sub-Assy 1112220403 1112220403 Front Case Sub-assy 2001213931 2001213931 Guide Louver 10512157 10512157 Axile Bush 10542036 10542036 Rear Grill 01472013 01472013 Air Louver 2 10512165 10512165 Helicoid Tongue...
  • Page 62: Outdoor Unit

    Service Manual 10.2 Outdoor Unit ACZCI4C4R12 Installation and Maintenance...
  • Page 63 Service Manual Part Code Description ACZCI4C4R12 Product Code CB145W04500_L17107 Front Grill 01473051 Cabinet 0143304401P Axial Flow Fan Sub-Assy 1033300901 Fan Motor 1501307301 Chassis Sub-assy 02803265P Compressor Gasket 76710302 Compressor Overload Proctector(External) 00183032 Compressor and Fittings 00103896G Discharge Tube 03833586 Cut off Valve Assy 07133841 Cut off Valve Assy 07133960...
  • Page 64 Service Manual ACZCI4H4R09 ACZCI4H4R12 Installation and Maintenance...
  • Page 65 Service Manual Part Code Description ACZCI4H4R09 ACZCI4H4R12 Product Code CB145W04400_L14385 CB145W04600_L14385 Front Grill 01473051 01473051 Cabinet 0143304401P 0143304401P Axial Flow Fan Sub-Assy 1033300901 1033300901 Fan Motor 1501307301 1501307301 Left Side Plate 20053001 20053001 Motor Support 0170312201 01703122 Clapboard 01233088 01233088 Compressor and Fittings 00103896G 00103896G...
  • Page 66: Removal Procedure

    Service Manual 11. Removal Procedure 11.1 Removal Procedure of Indoor Unit Caution: discharge the refrigerant completely before removal. Steps Procedure 1. Remove filter Open the panel. Panel Loosen the clasp shown in the fig and then pull the left filter and right filer outwards to remove them.
  • Page 67 Service Manual Procedure Steps 3. Remove panel Panel Open the front panel; separate the panel rotation shaft from the groove fixing the Front panel front panel and then removes the front panel. Note: The display of some models is fixed on Panel rotation the panel;...
  • Page 68 Service Manual Steps Procedure 6. Remove vertical louver Loosen the connection clasps between vertical louver and bottom case to remove vertical louver. Bottom case Vertical louver Clasps 7. Remove electric box assy Loosen the connection clasps between shield cover of electric box sub-assy and electric box, and then remove the shield cover of electric box sub-assy.
  • Page 69 Service Manual Steps Procedure Remove two screws fixing display. Note: The display of some models is fixed on the panel; unscrew the screws fixing the display on the panel before removing the Display Screws panel. Screws Remove the screw fixing electric box assy and then remove the electric box assy.
  • Page 70 Service Manual Steps Procedure 9. Remove stepping motor Step motor Screws Remove the screw fixing step motor and then remove the step motor. 10. Remove motor and cross flow blade Remove the screws fixing motor clamp and then remove the motor clamp. Motor clamp Cross flow Remove the screws at the connection...
  • Page 71: Removal Procedure Of Outdoor Unit

    Service Manual 11.2 Removal Procedure of Outdoor Unit Warning: Be sure to wait for a minimum of 20 minutes after turning off all power supplies and discharge the refrigerant completely before removal. Steps Procedure Points 1. Remove the handle The stop valve cover has 6 hooks.
  • Page 72 Service Manual Steps Procedure Points 3.Remove grille and front panel Loosen one screw and remove the discharge grille. Grille Lift the front panel and remove it while pushing Loosen the 5 screws of the right side panel inwards. the front panel. Front panel.
  • Page 73 Service Manual Steps Procedure Points M4×16 Remove the 4 tapping screws fixing the motor. DC fan motor Fan motor fixing frane Pull out the lead-out wire and remove the motor. Remove the 2 tapping screws fixing the motor support. Lift to remove the motor support.
  • Page 74 Service Manual Steps Procedure Points 8.Remove the sound blanket Since the piping ports on Lift and remove the the sound blanket are sound blanket (top). torn easily, remove the blanket carefully. Untie the strings and open the sound blanket. Lift and remove the sound blanket (body) as it is opened.
  • Page 75 Service Manual Steps Procedure Points 10.Remove compressor Solder off the welding spot of capillary and valve and outlet pipe of condenser. Remove the 2 screws fixing the gas valve. Solder off the weld spot connecting gas valve and air return pipe and remove the gas valve.
  • Page 76: Appendix

    Service Manual Appendix: Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit Fahrenheit Fahrenheit Fahrenheit Fahrenheit Fahrenheit display display display Celsius (℃) Celsius (℃) Celsius (℃) temperature temperature temperature (℉)...
  • Page 77: Appendix 3: Pipe Expanding Method

    Service Manual Appendix 3: Pipe Expanding Method Pipe Note: Improper pipe expanding is the main cause of refrigerant leakage.Please Pipe cutter expand the pipe according to the following steps: Leaning Uneven Burr A:Cut the pip ● Confirm the pipe length according to the distance of indoor unit and outdoor unit. ●...
  • Page 78: Appendix 4: List Of Resistance For Temperature Sensor

    Service Manual Appendix 4: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor (15K) Resistance(kΩ) F) Resistance(kΩ) Resistance(kΩ) Resistance(kΩ) Temp( Temp( Temp( Temp( -2.2 138.1 18.75 138.2 3.848 208.4 1.071 -0.4 128.6 69.8 17.93 3.711 210.2...
  • Page 79 Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) F) Resistance(kΩ) F) Resistance(kΩ) Resistance(kΩ) Resistance(kΩ) Temp( Temp( Temp( Temp( -2.2 181.4 25.01 138.2 5.13 208.4 1.427 -0.4 171.4 69.8 23.9 4.948 210.2 1.386 162.1 71.6 22.85 141.8 4.773 1.346...
  • Page 80 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor(50K) Resistance(kΩ) Resistance(kΩ) F) Resistance(kΩ) Resistance(kΩ) Temp( Temp( Temp( Temp( -20.2 853.5 120.2 18.34 190.4 4.75 -18.4 799.8 51.8 93.42 17.65 192.2 4.61 -16.6 53.6 89.07 123.8 16.99 4.47 -14.8 703.8 55.4 84.95 125.6...
  • Page 81 JF00302266...

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