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Gree NG Series Service Manual

Gree NG Series Service Manual

Split air conditioner inverter console
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SERVICE MANUAL
Split Air Conditioner
INVERTER CONSOLE NG Series
For proper operation, please read and keep this manual carefully.
Designed by Cooper&Hunter International Corporation, FL Miami, USA
www.cooperandhunter.com
CH-S09FVX2-NG
CH-S12FVX2-NG
CH-S18FVX2-NG

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  • Page 1 SERVICE MANUAL Split Air Conditioner INVERTER CONSOLE NG Series CH-S09FVX2-NG CH-S12FVX2-NG CH-S18FVX2-NG For proper operation, please read and keep this manual carefully. Designed by Cooper&Hunter International Corporation, FL Miami, USA www.cooperandhunter.com...

  • Page 2: Table Of Contents

    ..........17 6.1 Remote Controller Introduction ............. 17 6.2 Brief Description of Modes and Functions ........... 21 6.3 GREE+ App Operation Manual ............... 23 6.4 Ewpe Smart App Operation Manual ............24 Part II : Installation and Maintenance ....25 7.
  • Page 3 Service Manual 9.1 Error Code List ..................40 9.2 Procedure of Troubleshooting ............... 46 9.3 Troubleshooting for Normal Malfunction ..........58 10. Exploded View and Parts List ......60 10.1 Indoor Unit ..................... 60 10.2 Outdoor Unit ..................62 11. Removal Procedure ..........
  • Page 4 1. Summary Service Manual Indoor Unit: CH-S09FVX2-NG Indoor unit CH-S12FVX2-NG Indoor unit CH-S18FVX2-NG Indoor unit Outdoor Unit: CH-S09FVX2-NG Outdoor unit CH-S12FVX2-NG Outdoor unit CH-S18FVX2-NG Outdoor unit Remote Controller: YAA1FB8(WiFi) Technical Information...

  • Page 5: Specifications

    2. Specifications Service Manual 2.1 Specification Sheet Model CH-S09FVX2-NG CH-S12FVX2-NG Product Code CV010003100 CV010003200 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity 2700 3520 Heating Capacity 2900 3800 Cooling Power Input Heating Power Input Cooling Power Current Heating Power Current Rated Input...
  • Page 6 Service Manual Outdoor Unit Model CH-S09FVX2-NG Outdoor unit CH-S12FVX2-NG Outdoor unit Outdoor Unit Product Code CV010W03100 CV010W03200 ZHUHAI LANDA ZHUHAI LANDA Compressor Manufacturer COMPRESSOR CO.,LTD. COMPRESSOR CO.,LTD. Compressor Model QXF-A082zC170 FTz-AN108ACBD Compressor Oil ZE-G;ES RB68GX or equivalent FW68DA or equivalent Compressor Type Rotary Rotary...
  • Page 7 Service Manual Model CH-S18FVX2-NG Product Code CV010003300 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity 5200 Heating Capacity 5330 Cooling Power Input 1445 Heating Power Input 1545 Cooling Power Current Heating Power Current Rated Input 2400 Rated Cooling Current 11.5...
  • Page 8 Service Manual Outdoor Unit Model CH-S18FVX2-NG Outdoor unit Outdoor Unit Product Code CV010W03300 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO., LTD. Compressor Model QXF-M130zF170 Compressor Oil RB68GX or equivalent Compressor Type Rotary Compressor LRA. Compressor RLA 5.36 Compressor Power Input 1196 Compressor Overload Protector Throttling Method Electron expansion valve...

  • Page 9: Capacity Variation Ratio According To Temperature

    Service Manual 2.2 Capacity Variation Ratio According to Temperature 09/12K n i l Conditions Indoor:DB20°C Condition Indoor air flow:Super High Indoor:DB27°C WB19°C Pipe length:5m Indoor air flow: High Pipe length:5m 10 15 20 25 30 35 40 43 -15 -10 -5 Outdoor temp.(°C) Outdoor temp.(°C) n i l...

  • Page 10: Outline Dimension Diagram

    3. Outline Dimension Diagram Service Manual 3.1 Indoor Unit Unit:mm Technical Information...

  • Page 11: Outdoor Unit

    Service Manual 3.2 Outdoor Unit CH-S09FVX2-NG Outdoor unit Unit:mm CH-S12FVX2-NG Outdoor unit Unit:mm Technical Information...
  • Page 12 Service Manual CH-S18FVX2-NG Outdoor unit Unit:mm Technical Information...

  • Page 13: Refrigerant System Diagram

    4. Refrigerant System Diagram Service Manual Outdoor unit Indoor unit Gas pipe side Valve 4-Way valve Di s charge Heat Suction exchanger (evaporator) Heat exchanger Liquid pipe (condenser) side Valve Electron Strainer Strainer expansion valve COOLING HEATING Connection pipe specification: Liquid pipe:1/4"...

  • Page 14: Electrical Part

    5. Electrical Part Service Manual 5.1 Wiring Diagram ● Instruction Symbol Symbol Color Symbol Symbol Color Symbol Name Yellow Brown COMP Compressor Blue Grounding wire YEGN Yellow/Green Black Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model. ●...
  • Page 15 Service Manual CH-S12FVX2-NG Indoor unit CH-S18FVX2-NG Indoor unit WARNING SWITCH ROOM TEMP. TUBE TEMP. RECEIVER AND MOTOR P l e a s e d o n ' t t o u c h a n y e l e c t r o n i c SENSOR SENSOR SELECT...
  • Page 16 Service Manual ● Outdoor Unit CH-S09FVX2-NG Outdoor unit CH-S12FVX2-NG Outdoor unit WARNING OPTIONAL OPTIONAL OPTIONAL Bottom 4-WAY ELECTRONIC OUTROOM OUTTUBE EXHAUST Please don't touch any Band EXPANSION VALVE TEMP. TEMP. TEMP. terminal when the machine is VALVE Heater SENSOR SENSOR SENSOR running ,stopping or has been powered off for less than 30 minutes to prevent the risk...

  • Page 17: Pcb Printed Diagram

    Service Manual 5.2 PCB Printed Diagram ● Indoor Unit Name Name Interface of tube temperature sensor 10 Fuse Terminal for health function Interface of ambient temperature sensor (only for the mode with this function) Up swing interface 12 Terminal of neutral wire Communication interface between indoor unit Down swing interface and outdoor unit...
  • Page 18 Service Manual ● Outdoor Unit CH-S09FVX2-NG Outdoor unit CH-S12FVX2-NG Outdoor unit Name Name Earthing wire terminal Fan motor terminal Live wire terminal Electron expansion valve terminal Neutral wire terminal Compressor overload terminal Communication terminal 10 Temperature sensor terminal 4-way valve terminal E store terminal Electric heating terminal of chassis 12 Compressor terminal...
  • Page 19 Service Manual CH-S18FVX2-NG Outdoor unit Name Name Earthing Wire Insertion Outdoor Fan Needle Stand Live Wire Insertion Temperature Sensor Needle Stand Neutral Wire Insertion Compressor Overload Needle Stand Communication Wire Insertion Compressor Needle Stand Four-way Valve Needle Stand Electronic Expansion Valve Needle Stand Chassis Electric Heating Belt Needle Stand EEP Flash Drive Needle Stand Technical Information...

  • Page 20: Function And Control

    6. Function and Control Service Manual 6.1 Remote Controller Introduction Buttons on remote controller ON/OFF Press it to start or stop operation. : Pressit to decreasetemperatur e setting. : Press it to increase temperature setting. MODE Press it to select operation mode (AUTO/COOL/DRY/FAN/HEAT).
  • Page 21 Service Manual Introduction for buttons on remote controller Note: This is a general use remote controller, it could be used for the air minutes. at low speed. In this period, Hold fan speed button for 2s conditioners with multifunction; For some function, which the model to stop indoor fan directly.
  • Page 22 Service Manual sleep curve setting under Sleep mode by DIY: Press CLOCK button, blinking . Within 5 seconds,pressing + or - button adjusts the present time. (1) Under Sleep 3 mode, press "Turbo" button for a long time, remote control enters into user individuation sleep setting status, Holding down either button above 2 seconds increases or at this time, the time of remote control will display "1 hour ", the decreases the time by 1 minute every 0.5 second and then by...
  • Page 23 Service Manual Press "TEMP" and "CLOCK" simultaneously in COOL mode to start energy-saving function. Nixie tube on the remote controller displays "SE". Repeat the operation to quit the function. 20.Combination of " TEMP " and "CLOCK" buttons : About 8ºC Heating Function Press "TEMP"...

  • Page 24: Brief Description Of Modes And Functions

    Service Manual 6.2 Brief Description of Modes and Functions 1. Cooling mode keep previous operation mode (when it turns to dry mode, the unit (1) Under this mode, the fan and the up swing will operate at operates at auto fan mode). setting status.
  • Page 25 Service Manual If timer ON is set during operation of the unit, the unit will continue to operate. If timer ON is set at unit OFF, upon ON time reaches the unit will start to operate according to previous setting status. Timer OFF If timer OFF is set at unit OFF, the system will keep standby status.

  • Page 26: Ewpe Smart App Operation Manual

    Service Manual 6.4 Ewpe Smart App Operation Manual Control Flow Chart Internet Cloud intelligent Cellular/ Home Wi-Fi home Other Wi-FI appliances Home wireless router Home Wi-Fi Operating Systems Requirement for User's smart phone: iOS system Android system Support iOS7.0 and Support Android 4.4 and above version above version...

  • Page 27: Notes For Installation And Maintenance

    7. Notes for Installation and Maintenance Service Manual Safety Precautions: Important! be installed in the circuit. The air switch should be all-pole parting and the contact parting distance should be more Please read the safety precautions carefully before installa- than 3mm. 12.

  • Page 28: Safety Precautions For Installing And Relocating The Unit

    Service Manual Safety Precautions for Installing and Relocating the Unit: To ensure safety, please be mindful of the following precautions. WARNINGS 1. When installing or relocating the unit, be sure to keep the If compressor starts running when stop valve is open and refrigerant circuit free from air or substances other than the connection pipe is not yet connected, air will be sucked in and specified refrigerant.
  • Page 29 Service Manual Safety Precautions for Refrigerant Safety Operation of Flammable Refrigerant Qualification requirement for installation and Appliance filled with flammable gas R32. maintenance man ●All the work men who are engaging in the refrigeration Before install and use the appliance, read the owner's system should bear the valid certification awarded by the authoritative organization and the qualification for dealing manual first.
  • Page 30 Service Manual ●Check whether the maintenance area is well-ventilated. – refrigeration pipe or components are installed in a — The continuous ventilation status should be kept during position where they are unlikely to be exposed to any the operation process. substance which may corrode refrigerant containing ●Check whether there is fire source or potential fire source components, unless the components are constructed of...
  • Page 31 Service Manual preferably expel it externally into the atmosphere. in use.Intrinsically safe components are the only types that ● Checks to the refrigeration equipment can be worked on while live in the presence of a flammable Where electrical components are being changed, they shall be atmosphere.
  • Page 32 Service Manual flammable refrigerants it is important that best practice is refrigerant sample shall be taken in case analysis is required followed sinse flammability is a consideration. The following prior to re-use of reclaimed refrigerant. It is essential that procedure shall be adhered to: electrical power is available before the task is commenced.
  • Page 33 Service Manual The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of all appropriate refrigerants including, when applicable, flammable refrigerants. In addition, a set of calibrated weighing scales shall be available and in good working order.

  • Page 34: Main Tools For Installation And Maintenance

    Service Manual Main Tools for Installation and Maintenance Measuring tape Level meter Screw driver Impact drill Universal meter Drill head Electric drill Electroprobe Inner hexagon Electronic Torque wrench Open-end wrench spanner leakage detector Pressure meter Pipe pliers Pipe pliers Vacuum pump Pipe cutter Pipe expander Pipe bender...

  • Page 35: Installation

    8. Installation Service Manual 8.1 Requirements for Electric Connection 1. Safety Precaution (1) Must follow the electric safety regulations when installing the There are 2 styles of installation unit. ● ● (2) If the supply cord is damaged, it must be replaced by the Ceiling type Floor type manufacturer or its service agent or a similarly qualified person in...
  • Page 36 Service Manual shown here. installed and the environment in which it is used.) ● See the installation manual for the outdoor unit for the Console unit shall be installed on the ground or the position where is 0.3m from the floor. maximum pipe length.
  • Page 37 Service Manual 2)Upper casing 3)Side casings 3)Side casings 50 or more Drain hose Vinyl chloride Remove 7 screws Remove the pillar Reducer drain pipe ■For Side Piping ●Remove the pillars. (1) Remove the 7screws. Must be no trap (2) Remove the upper casing (2 tabs). (3) Remove the left and right casings (2 tabs on eachside ).
  • Page 38 Service Manual Casing The pipe end must Flare’s inner be evenly flared in surface must a perfect circle be scratch-free Make sure that the flare nut is fitted 8. Connecting the Refrigerant Pipe (1) Use torque wrenches when tightening the flare nuts to prevent damage to the flare nuts and gas leaks.
  • Page 39 Service Manual (2) Be sure to insulate both the gas and liquid piping and to provide insulation dimensions as below. Drain pan Gas side Liquid side Seal Drain hose 09/12K Drain pan Seal O.D. 3/8 inch O.D. 1/2 inch O.D. 1/4 inch Thickness 0.8mm 12.

  • Page 40: Outdoor Unit Installation

    Service Manual 8.3 Outdoor Unit Installation Refer to the following table for wrench moment of force: 1. Fix the Support of Outdoor Unit(Select it according to the Tightening torque(N . m) Hex nut diameter(inch) actual installation situation) 15~20 30~40 (1) Select installation location according to the house structure. 45~55 (2) Fix the support of outdoor unit on the selected location with 60~65...

  • Page 41: Check After Installation And Test Operation

    Service Manual 2. Leakage Detection (1) With leakage detector: Check if there is leakage with leakage detector. (2) With soap water: If leakage detector is not available, please use soap water for leakage detection. Apply soap water at the suspected position and keep the soap water for more than 3min.

  • Page 42: Maintenance

    9. Maintenance Service Manual 9.1 Error Code List Error Malfunction name AC status Possible causes code 1. Jumper cap is not installed in control panel; 2. Poor contact of jumper cap; Malfunction of jumper cap The complete unit stops operation 3.
  • Page 43 Service Manual Error Malfunction name AC status Possible causes code 1. Temperature sensor is not well connected or damaged; Liquid valve temperature 2. The wire of temperature sensor is damaged, causing short sensor is ON / short- circuit to copper pipe or outer casing; circuited 3.
  • Page 44 Service Manual Error Malfunction name AC status Possible causes code Cool/Dry: compressor and outdoor 1. Temperature sensor is not connected well or damaged; Outdoor condenser fan stop operation, while indoor fan 2. Temperature sensor wire of outdoor unit is damaged; short temperature sensor is operates;...
  • Page 45 Service Manual Error Malfunction name AC status Possible causes code 1. Outdoor ambient temperature exceeds the operation range Cool: compressor and outdoor of unit (eg: less than-20 C or more than 60 C for cooling; more fan stops operation, while indoor than 30 C for heating);...
  • Page 46 Service Manual Error Malfunction name AC status Possible causes code Cool/Dry: compressor stops DC bus voltage drop operation, while indoor fan The power voltage is unstable. malfunction operates; Heat: all loads stops operation. Cool: compressor and outdoor 1. Is the complete unit lacking of refrigerant? fan stops operation, while indoor Current detection fan operates;...

  • Page 47: Procedure Of Troubleshooting

    Service Manual 9.2 Procedure of Troubleshooting 1. Troubleshooting for jumper cap Main check points: (1) jumper cap (2) control board of indoor unit Display shows “C5” Check whether the main Insert the equipped board of controller is inserted with jumper cap jumper cap.
  • Page 48 Service Manual 2. Communication malfunction Main check points: (1) Connection wire between indoor unit and outdoor unit (2) Wiring inside the unit (3) Communication circuit of control board of indoor unit (4) Communication circuit of control board of outdoor unit Start Check whether the unit has operated normally before...
  • Page 49 Service Manual 3. IPM protection , over-phase current of compressor Main check points: (1) compressor COMP terminal (2) power supply voltage (3) compressor (4) charging amount of refrigerant (5) air inlet and air outlet of indoor/outdoor unit NOTE:The control board as below means the control board of outdoor unit. Put through the power and turn on the unit...
  • Page 50 Service Manual 4. Overload protection of compressor , high discharge temperature, protection of compressor Main check points: (1) electronic expansion valve (2) expansion valve terminal (3) charging amount of refrigerant (4) overload protector NOTE:The control board as below means the control board of outdoor unit. After the unit has been cut off the power for more than 20mins...
  • Page 51 Service Manual 5.Troubleshooting for temperature sensor , , , , Main check points: (1) connection terminal (2) temperature sensor (3) main board Start Check whether the connection terminal between the temperature sensor and the control board is loose or not connected well.
  • Page 52 Service Manual ; high power ; system is abnormal 6.High temperature prevention protection Main check points: (1) outdoor temperature (2) fan (3)air inlet and air outlet of indoor/outdoor unit NOTE:The control board as below means the control board of outdoor unit. Overload protection, high temperature prevention protection...
  • Page 53 Service Manual 7.Desynchronization diagnosis for compressor Main check point: (1) system pressure (2) power supply voltage NOTE:The control board as below means the control board of outdoor unit. Desynchronization occurs Desynchronization occurs during operation after turning on the unit Check whether the fan Replace the fan Does the outdoor fan operate terminal OFAN is...
  • Page 54 Service Manual 8.Malfunction diagnosis for failure startup Main check points: (1) compressor wire (2) compressor (3) charging amount of refrigerant NOTE:The control board as below means the control board of outdoor unit. Put through the power and turn on the unit The time for stop operation is not enough and the system's high pressure and low pressure is Check whether the compressor...
  • Page 55 Service Manual 9. Charging malfunction of capacitor Main check points: (1) wiring board XT (2) reactor NOTE:The control board as below means the control board of outdoor unit. Put through the power to turn on the unit and then wait for 1min Measure the voltage at both ends of electrolytic capacitor with DC voltmeter.
  • Page 56 Service Manual 10. Troubleshooting-motor(indoor fan) doesn't operate Main check points: (1) connection terminal (2) motor (3) control board AP1 of indoor unit (4) blade 10.1 DC motor Display shows "H6" Pull the blade with hand under de-energization status Check whether the Adjust the motor and the blade blade operates smoothly to make the motor operate...
  • Page 57 Service Manual 10.2 PG motor Display shows "H6" Pull the blade with hand under de- energization status Adjust the motor and Check whether the blade to make the the blade operates blade operate smoothly smoothly. Eliminate malfunction Check whether Insert the feedback the feedback terminal of terminal again indoor fan's motor...
  • Page 58 Service Manual 11. AC overcurrent protection Start The normal fluctuation is about 10% of rated Eliminate malfunction The power voltage is unstable. voltage on the nameplate. The power voltage is too low and the Adjust the power voltage to make it normal. Eliminate malfunction load is too high.

  • Page 59: Troubleshooting For Normal Malfunction

    Service Manual 9.3 Troubleshooting for Normal Malfunction 1. Air Conditioner can't be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether it's due to power failure. If yes, No power supply, or poor connection After energization, operation indicator isn't bright wait for power recovery.
  • Page 60 Service Manual 4. ODU Fan Motor can't Operate Possible causes Discriminating method (air conditioner status) Troubleshooting Wrong wire connection, or poor Check the wiring status according to circuit Connect wires according to wiring diagram to make sure all wiring terminals are connected firmly connection diagram Measure the capacity of fan capacitor with an...

  • Page 61: Exploded View And Parts List

    10. Exploded View and Parts List Service Manual 10.1 Indoor Unit The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 62 Service Manual Description Description Front Panel Assy Jumper Filter Sub-Assy Main Board Front Case Assy Electric Box Evaporator Assy Electric Box Assy Cold Plasma Generator Air Louver (upper) Rear Case Assy Swing Lever Centrifugal Fan Shaft of Guide Louver Fan Motor Water Tray Assy Stepping Motor Air Louver (lower)

  • Page 63: Outdoor Unit

    Service Manual 10.2 Outdoor Unit CH-S09FVX2-NG Outdoor unit The component picture is only for reference; please refer to the actual product. Description Description Description Coping Silencer Left Side Plate 4-Way Valve Assy Cut off Valve Sub-Assy Clapboard Handle (Right) Strainer Electric Box Assy Sponge(Condenser) Valve Support...
  • Page 64 Service Manual CH-S12FVX2-NG Outdoor unit The component picture is only for reference; please refer to the actual product. Description Description Description Top Cover Assy Grill Handle Brushless DC Motor Condenser Assy Valve Cover Motor Support 4-Way Valve Cut-off valve 1/4(N) Left Side Plate Sensor Insert Cut-off valve 3/8(N)
  • Page 65 Service Manual CH-S18FVX2-NG Outdoor unit 9 10 11 The component picture is only for reference; please refer to the actual product. Description Description Description Front Grill Cut-off valve Brushless DC Motor Front Panel Valve Cover Top Cover Assy Axial Flow Fan Handle Left Side Plate Chassis Sub-assy...

  • Page 66: Removal Procedure

    11. Removal Procedure Service Manual Caution: discharge the refrigerant 11.1 Removal Procedure of Indoor Unit completely before removal. Step Procedure 1. Remove panel Pull sliding clasps at both sides of panel, panel pull out the panel outwards and then sliding clasps move the panel upwards to remove it.
  • Page 67 Service Manual Step Procedure 4.Remove swing parts swing parts screw Remove 2 screws fixing the swing parts, and then pull the swing parts outwards to remove it. 5. Remove water tray Remove 2 screws fixing water tray, and then pull the water tray outwards to remove it.
  • Page 68 Service Manual Step Procedure 7. Remove fixer of piping clasps Pry out the clasps connecting fixer of piping and bottom case, and then pull the fixer of piping outwards to remove it. fixer of piping 8. Remove evaporator clasps evaporator Pry out the clasps connecting evaporator and bottom case, and then pull the evaporator outwards to remove it.
  • Page 69 Service Manual Step Procedure 10. Remove centrifugal blade centrifugal blade Remove one nut fixing the centrifugal blade, and then pull the centrifugal blade outwards to remove it. 11. Remove fixing bracket of motor fixing bracket of motor nuts Remove 3 nuts on fixing bracket of motor, and then pull the fixing bracket of motor outwards to remove it.

  • Page 70: Removal Procedure Of Outdoor Unit

    Service Manual Caution: discharge the refrigerant 11.2 Removal Procedure of Outdoor Unit completely before removal. (The front grill appearance is for reference only) Step Procedure 1. Before disassembly 2. Remove big handle and valve cover Big handle Remove the screws fixing big handle, valve cover and then remove them.
  • Page 71 Service Manual Step Procedure 4. Remove front panel assy Remove connection screws connecting the front panel assy with the chassis and the motor support, and then remove the front panel assy. Front panel assy 5. Remove right side plate assy Right side plate assy Rescrew the ground screws, remove the ground wires, loosen the screws fixing terminal board, remove the...
  • Page 72 Service Manual Step Procedure 7. Remove motor support and motor Motor support Remove the screws fixing the motor support and lift the Motor motor support to remove it. Remove the screws fixing the motor and then remove the motor. 8. Remove electric box assy Electric box assy Remove the terminals, lift up and rotate the electrical box assy to the right so that the snaps on the clapboard...
  • Page 73 Service Manual Step Procedure 10. Remove gas valve and liquid valve Remove the valve support bolck, remove the screws fixing the gas valve and the liquid valve,unsolder the welding joint connecting the gas valve and the liquid valve, remove them. Note: Liquid valve Discharge the refrigerant completely befor unsoldering;...
  • Page 74 Service Manual Caution: discharge the refrigerant completely before removal. (The front grill appearance is for reference only) Step Procedure 1. Before disassembly 2. Remove big handle and valve cover Remove the screws fixing big handle, valve cover and then remove them. big handle valve cover 3.
  • Page 75 Service Manual Step Procedure 4. Remove front panel assy Remove connection screws connecting the front panel assy with the chassis and the motor support, and then remove the front panel assy. Front panel 5. Remove right side plate assy Rescrew the ground screws, remove the ground wires, loosen the screws fixing terminal board, remove the terminal board, rescrew the screws fixing the right plate, and remove the right side plate assy.
  • Page 76 Service Manual Step Procedure 7. Remove electric box assy Electrical box assy Remove the terminals, lift up and rotate the electrical box assy to the right so that the snaps on the clapboard are removed and the electrical box assy are removed. 8.
  • Page 77 Service Manual Step Procedure 10. Remove 4-way valve assy 4-way valve assy Unsolder the welding joints connecting the 4-way valve assy, remove the 4-way valve. Note: Before unsoldering the welding joint, wrap the 4-way valve with a wet cloth completely to avoid damage to the valve caused by high temperature.
  • Page 78 Service Manual Caution: discharge the refrigerant completely before removal. (The front grill appearance is for reference only) Step Procedure 1. Remove handle handle TRemove the screw fixing the handle and then remove screw the handle. 2. Remove valve cover screw Remove the screw fixing the valve cover and then remove the valve cover.
  • Page 79 Service Manual Step Procedure 4. Remove grille grille Remove the screws fixing the grille and then remove the panel grille. screws 5. Remove front panel front panel screws Remove screws fixing the front panel and then remove the front panel. screws 6.
  • Page 80 Service Manual Step Procedure 7. Remove electric box assy screws electric box assy Remove the screws fixing the electricbox; loosen the wire bundle; pull out the wiring terminals and then pull electric boxupwards to remove it. 8. Remove axial flow blade axial flow blade Remove nut fixing the blade and then remove the...
  • Page 81 Service Manual Step Procedure 10. Remove motor support motor support Remove screws fixing the motor support and then remove the motor support. screws 11. Remove cut off valve and valve support sub-assy Remove screws fixing the cut off valve and then remove the cut off valve;...
  • Page 82 Service Manual Step Procedure left side plate 13. Remove left side plate Remove the screws fixing the left side plate and the chassis, and then remove the left side plate. screws 14. Remove 4-way valve assy and electronic expansion valve assy 4-way valve assy Unsolder the welding joints connecting electronic expansion valve assy the 4-way valve assy with...
  • Page 83 Service Manual Step Procedure 16. Remove compressor compressor Remove the 3 foot nuts on the compressor and then remove the compressor. foot nuts Installation and Maintenance...

  • Page 84: Appendix

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

  • Page 85: 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 expand Pipe cutter the pipe according to the following steps: A:Cut the pip Leaning Uneven Burr ● Confirm the pipe length according to the distance of indoor unit and outdoor unit. ●...

  • Page 86: 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 Units (15K) Resistance(kΩ) Resistance(kΩ) Resistance(kΩ) Resistance(kΩ) Temp( Temp( Temp( Temp( 138.10 49.02 18.75 7.97 128.60 44.31 17.14 7.35 115.00 40.09 15.68 6.79 102.90...

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