Gree GWH09AGA-K6DNA1A/I Service Manual
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Gree GWH09AGA-K6DNA1A/I Service Manual

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GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

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Summary of Contents for Gree GWH09AGA-K6DNA1A/I

  • Page 1 Change for life Service Manual 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 ......................3 2.1 Specification Sheet ....................3 2.2 Capacity Variation Ratio According to Temperature ......... 11 2.3 Cooling and Heating Data Sheet in Rated Frequency ....... 11 2.4 Noise Curve ......................12 3.
  • Page 3 Service Manual 8.7 Vacuum Pumping and Leak Detection ............55 8.8 Check after Installation and Test Operation ..........55 9. Maintenance ......................56 9.1 Error Code List ......................56 9.2 Procedure of Troubleshooting ................62 9.3 Troubleshooting for Normal Malfunction ............74 10. Exploded View and Parts List ..............76 10.1 Indoor Unit ......................76...

  • Page 4: Part Ⅰ : Technical Information

    Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit GWH09AGA-K6DNA1A/I GWH12AGB-K6DNA1A/I GWH09AGA-K6DNA4A/I GWH12AGB-K6DNA4A/I GWH12AGB-K6DNA1B/I GWH18AGD-K6DNA1A/I GWH18AGD-K6DNA4A/I GWH24AGD-K6DNA4A/I GWH24AGD-K6DNA1A/I GWH24AGD-K6DNA1B/I Outdoor Unit GWH09AGA-K6DNA1A/O GWH12AGB-K6DNA1A/O GWH12AGB-K6DNA1B/O GWH18AGD-K6DNA1A/O GWH24AGD-K6DNA1A/O GWH24AGD-K6DNA1B/O Technical Information...
  • Page 5 Outdoor Unit Model Product Code Controller Product Code 1 GWH09AGA-K6DNA4A CB558000100 GWH09AGA-K6DNA4A/I CB558N00100 GWH09AGA-K6DNA1A/O CB385W01000 2 GWH09AGA-K6DNA1A CB385001001 GWH09AGA-K6DNA1A/I CB385N01001 3 GWH12AGB-K6DNA1A CB385001701 GWH12AGB-K6DNA1A/I CB385N01701 GWH12AGB-K6DNA1A/O CB385W01700 4 GWH12AGB-K6DNA4A CB558000200 GWH12AGB-K6DNA4A/I CB558N00200 YAW1F10 5 GWH18AGD-K6DNA1A CB385001901 GWH18AGD-K6DNA1A/I CB385N01901 GWH18AGD-K6DNA1A/O CB385W01900...

  • Page 6: Specifications

    500/470/430/390/320/270/250 590/520/480/400/350/320/280 Dehumidifying Volume 3.47 3.23 3.73 3.71 SEER SCOP(Average/Warmer/Colder) 4.0/5.1/- 4.0/5.1/- Application Area 10-16 15-22 GWH12AGB-K6DNA1A/I GWH09AGA-K6DNA1A/I Indoor Unit Model GWH09AGA-K6DNA4A/I GWH12AGB-K6DNA4A/I CB385N01701 CB385N01001 Indoor Unit Product Code CB558N00100 CB558N00200 Cross-flow Cross-flow Fan Type Ф93X505 Ф93×580 Diameter Length(DXL) Fan Motor Cooling Speed...
  • Page 7 Service Manual Model of Outdoor Unit GWH09AGA-K6DNA1A/O GWH12AGB-K6DNA1A/O Product Code of Outdoor Unit CB385W01000 CB385W01700 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO., LTD CO., LTD Compressor Model FTz-AN075ACBF-A FTz-AN088ACBF-A Compressor Oil FW68DA FW68DA Compressor Type Rotary Rotary L.R.A. Compressor RLA Compressor Power Input Overload Protector...
  • Page 8 Service Manual GWH18AGD-K6DNA1A GWH24AGD-K6DNA1A Model GWH18AGD-K6DNA4A GWH24AGD-K6DNA4A CB385001901 CB385001501 Product Code CB558000400 CB558000300 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity 4600 6200 Heating Capacity 5200 6500 Cooling Power Input 1355 1631 Heating Power Input 1340 1645...
  • Page 9 Service Manual Model of Outdoor Unit GWH18AGD-K6DNA1A/O GWH24AGD-K6DNA1A/O Product Code of Outdoor Unit CB385W01900 CB385W01500 ZHUHAI LANDA COMPRESSOR ZHUHAI LINDA COMPRESSOR Compressor Manufacturer/Trademark CO.,LTD CO., LTD Compressor Model QXF-A120zH190A GTD141UKRF8JT6G Compressor Oil RB68EP ACS-68R Compressor Type Rotary Rotary L.R.A. Compressor RLA 3.65 Compressor Power Input 1096...
  • Page 10 Service Manual Model GWH24AGD-K6DNA1B GWH24AGD-K6DNA1B Product Code CB385005600 CB385005601 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity 6150 6150 Heating Capacity 6500 6500 Cooling Power Input 1662 1662 Heating Power Input 1756 1756 Cooling Power Current Heating Power Current...
  • Page 11 Service Manual Model of Outdoor Unit GWH24AGD-K6DNA1B/O Product Code of Outdoor Unit CB385W05600 Compressor Manufacturer/Trademark SHANGHAI HIGHLY ELECTRICAL APPLIANCES CO.,LTD Compressor Model GTD141UKRF8JT6G Compressor Oil ACS-68R Compressor Type Rotary L.R.A. Compressor RLA 3.65 Compressor Power Input 1150 Overload Protector KSD1-115/95 HPC-115/95-UI Throttling Method Capillary Operation Temp...
  • Page 12 Service Manual Model GWH12AGB-K6DNA1B GWH12AGB-K6DNA1B Product Code CB385004800 CB385004801 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity 3500 3500 Heating Capacity 3500 3500 Cooling Power Input 1083 1083 Heating Power Input Cooling Power Current Heating Power Current Rated Input 1500...
  • Page 13 Service Manual Model of Outdoor Unit GWH12AGB-K6DNA1B/O Product Code of Outdoor Unit CB385W04800 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD Compressor Model FTz-AN088ACBF-A Compressor Oil FW68DA Compressor Type Rotary L.R.A. Compressor RLA Compressor Power Input Overload Protector Throttling Method Capillary Operation Temp 16~30 Ambient Temp (Cooling)

  • Page 14: Capacity Variation Ratio According To Temperature

    Service Manual 2.2 Capacity Variation Ratio According to Temperature Heating operation ambient temperature range is -15ºC~24ºC Cooling Heating Cooling Conditions Indoor:DB20°C Indoor air flow:Super High Condition Conditions Indoor:DB27°C/WB19°C Indoor:DB27°C WB19°C Pipe length:5m Indoor air flow:Super High Indoor air flow: High Pipe length:5m Pipe length:5m Outdoor temp.(°C)

  • Page 15: Noise Curve

    Service Manual 2.4 Noise Curve Outdoor side noise when blowing Outdoor side noise when blowing 09/12K Heating 09/12K Cooling Compressor frequency(Hz) Compressor frequency(Hz) Technical Information...

  • Page 16: Outline Dimension Diagram

    Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit AGA/AGB Φ55 Unit:mm Model 133.5 183.5 122.5 707.5 Φ55 Technical Information...

  • Page 17: Outdoor Unit

    Service Manual 3.2 Outdoor Unit 09/12K Unit:mm Unit:mm Technical Information...
  • Page 18 Service Manual Unit: mm Technical Information...

  • Page 19: Refrigerant System Diagram

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

  • Page 20: 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 21 Service Manual GWH24AGD-K6DNA1B/I(CB385N05600) 600007063656 GWH18AGD-K6DNA1A/I(CB385N01901) GWH18AGD-K6DNA4A/I(CB558N00400) GWH24AGD-K6DNA1B/I(CB385N05601) 60000706365601 Technical Information...
  • Page 22 Service Manual GWH24AGD-K6DNA1A/I(CB385N01501) GWH24AGD-K6DNA4A/I(CB558N00300) 60000706411702 Technical Information...
  • Page 23 Service Manual ● Outdoor Unit GWH09AGA-K6DNA1A/O GWH12AGB-K6DNA1A/O 600007064836 GWH18AGD-K6DNA1A/O 600007063906 Technical Information...
  • Page 24 Service Manual GWH12AGB-K6DNA1B/O 600007064834 GWH24AGD-K6DNA1A/O 60000706334102 Technical Information...
  • Page 25 Service Manual GWH24AGD-K6DNA1B/O 60000706421201 These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit. Technical Information...

  • Page 26: Pcb Printed Diagram

    Service Manual 5.2 PCB Printed Diagram Indoor Unit 09/12K Name Terminal of communication Fuse Live wire terminal Neutral wire terminal PG Motor terminal Interface of health function Up&down swing interface 2 Up&down swing interface 1 Left &Right swing interface(only for the model with this function) 10 Interface of PG feedback 11 Display interface 12 Terminal of temperature sensor...
  • Page 27 Service Manual GWH18AGD-K6DNA1A/I GWH18AGD-K6DNA4A/I GWH24AGD-K6DNA1B/I Name Terminal of communication Jumper cap Live wire terminal PG Motor terminal Neutral wire terminal Fuse Interface of health function Up&down swing interface 2 Up&down swing interface 1 10 Left &Right swing interface 11 Interface of PG feedback 12 Display interface 13 Terminal of temperature sensor 14 Interface of gate-control (only for the model with thisfunction)
  • Page 28 Service Manual GWH24AGD-K6DNA1A/I GWH24AGD-K6DNA4A/I Name Fuse Live wire Neutral wire Dommunication wire DC fan Cold plasma Left&right swing Up&down swing 2 Up&down swing 1 10 Interface of display board 11 Temperature sensor 12 Door control 13 Wired controller 14 Earthing wire 15 Terminal of live wire Technical Information...
  • Page 29 Service Manual Outdoor Unit GWH09AGA-K6DNA1A/O GWH12AGB-K6DNA1A/O Name Earthing wire Neutral wire, live wire and communication cable 4-way valve Electric heating belt of chassis Outdoor fan Electronic expansion valve Temperature sensor Three-phase terminal of compressor Technical Information...
  • Page 30 Service Manual GWH18AGD-K6DNA1A/O No. Name Terminal of compressor wire Reactor wiring terminal 2 Reactor wiring terminal 1 Terminal of chassis electric heater 4-way valve terminal Grounding wire Neutral wire Communication wire Live wire Terminal of electronic expansion valve Terminal of temperature sensor Overload interface of compressor Terminal of outdoor fan Technical Information...
  • Page 31 Service Manual GWH24AGD-K6DNA1A/O GWH24AGD-K6DNA1B/O No. Name Compressor three phase input interface Terminal of system high pressure protection Overload interface of compressor Terminal of temperature sensor Terminal of electronic expansion valve Terminal of system low pressure protection Terminal of outdoor fan 4-way valve interface 2-way valve interface Terminal of electric heating for compressor...
  • Page 32 Service Manual GWH12AGB-K6DNA1B/O No. Name Terminal of outdoor fan 4-way valve interface Terminal of electric heating for chassis Grounding wire Live wire Neutral wire Communication wire Terminal of electronic expansion valve Overload interface of compressor Terminal of temperature sensor Compressor three phase input interface Technical Information...

  • Page 33: Function And Control

    Service Manual 6. Function and Control 6.1 Remote Controller Introduction (YAP1F7(WiFi)) Notice: This is a general use remote controller. It could be used for the air conditioner with multifunction. For the functions which the model doesn't have, if press the corresponding button on the remote controller, the unit will keep the original running status. After putting through the power, the air conditioner will give out a sound.
  • Page 34 Service Manual Set temperature range from remote controller: 16~30 (61- Notice: ). Fan speed: auto,quiet,low speed, low-medium Press this button continuously more than 2s, the main unit speed,medium speed,medium-high speed, high speed. will swing back and forth from left to right, and then loosen This mode indicator is not available for some models.
  • Page 35 Service Manual blinking. " " icon resumes displaying. Cancel T-ON: Unde The interval between two operations can't exceed 5s. the condition that T-ON is started up, press "T-ON " button to Otherwise, remote controller will quit setting status. Operation cancel it. for TIMER ON/TIMER OFF is the same.
  • Page 36 Service Manual Notice: WiFi Under energy-saving function, fan speed is defaulted at When WiFi function is turned on, " WiFi " icon will be displayed auto speed and it can't be adjusted. on the remote controller; when WiFi function is turned off, Under energy-saving function, set temperature can't be "...
  • Page 37 Service Manual During cleaning, please make sure the room is well ventilated to avoid affecting the degree of comfort. Notice: The self-cleaning function can only work under normal ambient temperature. If the room is dusty, clean once a month; if not, clean once every three months. After the self- cleaning function is turned on, you may leave the room.

  • Page 38: Remote Controller Introduction (Yaw1F10)

    Service Manual 6.2 Remote Controller Introduction (YAW1F10) Notice: 1.This is a general use remote controller. It could be used for the air conditioner with multifunction. For the functions which the model doesn't have, if press the corresponding button on the remote controller, the unit will keep the original running status. 2.After putting through the power, the air conditioner will give out a sound.
  • Page 39 Service Manual Function introduction for combination buttons button Under ON status, press this button to set timer OFF; About lock Under OFF status, press this button to set timer ON. Press "▲" and "▼"buttons simultaneously 3s to lock or unlock Press this button once and the characters of HOUR ON the keypad.
  • Page 40 Service Manual Replacement of batteries in remote controller 1.Press the back side of remote controller marked with " ", as shown in the fig, and then push out the cover of battery box along the arrow direction. 2.Replace two 7# (AAA 1.5V) dry batteries, and make sure the position of "+" polar and "-" polar are correct. 3.Reinstall the cover of battery box.

  • Page 41: Brief Description Of Modes And Functions

    Service Manual 6.3 Brief Description of Modes and Functions ● Indoor Unit 1.Basic function of system (1)Cooling mode (1) Under this mode, fan and swing operates at setting status. Temperature setting range is 16~30 (2) During malfunction of outdoor unit or the unit is stopped because of protection, indoor unit keeps original operation status. (2)Drying mode (1) Under this mode, fan operates at low speed and swing operates at setting status.
  • Page 42 Service Manual (8)I feel control mode After controller received I feel control signal and ambient temperature sent by remote controller, controller will work according to the ambient temperature sent by remote controller. (9)Entry condition for compulsory defrosting function When turn on the unit under heating mode and set temperature is 16 C (or 16.5 C by remote controller), press “+, -, +, -, +, -”...
  • Page 43 Service Manual ● Outdoor Unit 1. Cooling mode: Working condition and process of cooling mode: ① When Tindoor ambient temperature≥Tpreset, unit enters into cooling mode. Indoor fan, outdoor fan and compressor start operation. Indoor fan operates according to set fan speed. ②...
  • Page 44 Service Manual 7. Auto mode Auto mode is determined by controller of IDU. See IDU logic for details. 8. 8 C heating Set temperature is 8 C. Display board of IDU displays 8 C. Under this mode, “Cold air prevention” function is shielded. If compressor is operating under this mode, fan speed will adjust according to auto fan speed;...

  • Page 45: Part Ⅱ : Installation And Maintenance

    Service Manual Part Ⅱ : Installation and Maintenance 7. Notes for Installation and Maintenance 10. If the power cord or connection wire is not long enough, Safety Precautions: please get the specialized power cord or connection wire from the manufacture or distributor. Prohibit prolong the wire Important! by yourself.
  • Page 46 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 refrigerant circuit free from air or substances other than the specified refrigerant.
  • Page 47 Service Manual Safety Operation of Flammable Refrigerant Qualification requirement for installation and maintenance man ●Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry-accredited assessment authority, which authorises their competence to handle refrigerants safely in accordance with an industry recognised assessment specification.
  • Page 48 Service Manual Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimised. For repair to the refrigerating system, the following precautions shall be complied with prior to conducting work on the system.
  • Page 49 Service Manual 2.That no live electrical components and wiring are exposed while charging, recovering or purging the system; 3.That there is continuity of earth bonding. ●Repairs to sealed components 1. During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked upon prior to any removal of sealed covers, etc.
  • Page 50 Service Manual 1.remove refrigerant; 2.purge the circuit with inert gas; evacuate; 3.purge again with inert gas; 4.open the circuit by cutting or brazing. The refrigerant charge shall be recovered into the correct recovery cylinders. For appliances containing flammable refrigerants, the system shall be “flushed” with OFN to render the unit safe. This process may need to be repeated several times.Compressed air or oxygen Installation and Maintenance...
  • Page 51 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 52: Installation

    Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall At least 15cm Space to the wall At least 15cm Space to the obstruction At least 50cm Drainage pipe Installation and Maintenance...
  • Page 53 Service Manual 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 54: Installation Parts-Checking

    Service Manual 8.4 Requirements for electric connection 8.2 Installation Parts-checking 1. Safety Precaution (1) Must follow the electric safety regulations when installing Name Name the unit. Indoor unit Sealing gum (2) According to the local safety regulations, use qualified Outdoor unit Wrapping tape power supply circuit and air switch.
  • Page 55 Service Manual in the holes. (3) Fix the wall-mounting frame on the wall with tapping screws Left Right and then check if the frame is firmly installed by pulling the frame. If the plastic expansion particle is loose, please drill another fixing hole nearby.
  • Page 56 Service Manual Note: Drain hose Outlet pipe (1) All wires of indoor unit and outdoor unit should be connected by a professional. (2) If the length of power connection wire is insufficient, please Tape contact the supplier for a new one. Avoid extending the wire by Fig.9 yourself.

  • Page 57: Installation Of Outdoor Unit

    Service Manual Refer to the following table for wrench moment of force: 8.6 Installation of Outdoor Unit Piping size Tightening torque(N m) 1. Fix the Support of Outdoor Unit(Select it according to 1/4" 15~20 the actual installation situation) 3/8" 30~40 (1) Select installation location according to the house structure.

  • Page 58: Vacuum Pumping And Leak Detection

    Service Manual 2. Leakage Detection Note: (1) With leakage detector: (1) The through-wall height of drain hose shouldnt be higher Check if there is leakage with leakage detector. than the outlet pipe hole of indoor unit.(As show in Fig.25) (2) With soap water: (2) Slant the drain hose slightly downwards.

  • Page 59: Maintenance

    Service Manual 9. Maintenance 9.1 Error Code List Display Method of Malfunction Indoor Unit A/C status Possible Causes Name Dual-8 Code Display Possible reasons: During cooling and drying operation: 1. Refrigerant was superabundant; except indoor fan operates, all loads stop 2.
  • Page 60 Service Manual Display Method of Malfunction Indoor Unit A/C status Possible Causes Name Dual-8 Code Display When the outdoor unit receive signal of Gathering refrigerant ,the system will Gathering refrigerant Nominal cooling mode be forced to run under cooling mode for gathering refrigerant 1.
  • Page 61 Service Manual Display Method of Malfunction Indoor Unit A/C status Possible Causes Name Dual-8 Code Display 1. Measure the voltage of position L and N on wiring board (XT), if the voltage is higher During cooling and drying operation: than 265VAC, turn on the unit after the supply compressor will stop while indoor fan will voltage is increased to the normal range.
  • Page 62 Service Manual Display Method of Malfunction Indoor Unit A/C status Possible Causes Name Dual-8 Code Display During cooling and drying operation: 1. Wiring terminal OVC-COMP is loosened. In compressor will stop while indoor fan will normal state, the resistance for this terminal Overload protection for operate;...
  • Page 63 Service Manual Display Method of Malfunction Indoor Unit A/C status Possible Causes Name Dual-8 Code Display During cooling and drying operation: Malfunction of phase compressor will stop while indoor fan will current detection circuit operate; Replace outdoor control panel AP1 for compressor During heating operation: the complete unit will stop...
  • Page 64 Service Manual Analysis or processing of some of the malfunction display: 1. Compressor discharge protection Possible causes: shortage of refrigerant; blockage of air filter; poor ventilation or air flow short pass for condenser; the system has noncondensing gas (such as air, water etc.); blockage of capillary assy (including filter); leakage inside four-way valve causes incorrect operation;...

  • Page 65: Procedure Of Troubleshooting

    Service Manual 9.2 Procedure of Troubleshooting Indoor unit 1. Malfunction of Temperature Sensor Main detection points: ● Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? ● Is there short circuit due to trip-over of the parts? ●...
  • Page 66 Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor Main detection points: ● SmoothlyIs the control terminal of PG motor connected tightly? ● SmoothlyIs the feedback interface of PG motor connected tightly? ● The fan motor can't operate? ●...
  • Page 67 Service Manual 3. Malfunction of Protection of Jumper Cap Main detection points: ● Is there jumper cap on the mainboard? ● Is the jumper cap inserted correctly and tightly? ● The jumper is broken? ● The motor is broken? ● Detection circuit of the mainboard is defined abnormal? Malfunction diagnosis process: Start Appearance of the...
  • Page 68 Service Manual 4. Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor Main detection points: ● Instant energization afte de-energization while the capacitordischarges slowly? ● The zero-cross detectioncircuit of the mainboard is defined abnormal? Malfunction diagnosis process: Start Turn power off for 1minute,the turn back on...
  • Page 69 Service Manual Outdoor unit 1. Capacitor charge fault (Fault with outdoor unit) (AP1 below refers to the outdoor control panel) Main Check Points: ●Use AC voltmeter to check if the voltage between terminal L and N on the wiring board is within 210VAC~240VAC. ●Is the reactor (L) correctly connected? Is the connection loose or fallen? Is the reactor (L) damaged? Fault diagnosis process: Turn on the unit...
  • Page 70 Service Manual 5. IPM protection, phase current overcurrent (the control board as below indicates the control board of outdoor unit) H5/P5 Mainly detect: (1) Compressor COMP terminal (2) voltage of power supply (3) compressor (4) Refrigerant-charging volume (5) air outlet and air inlet of outdoor/indoor unit Troubleshooting: Turn on the unit after energization...
  • Page 71 Service Manual 3. High temperature and overload protection diagnosis (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: ●Is outdoor ambient temperature in normal range? ●Are the outdoor and indoor fans operating normally? ●Is the heat dissipation environment inside and outside the unit good? Fault diagnosis process: Overheat and high temperature protection...
  • Page 72 Service Manual 4. Start-up failure (following AP1 for outdoor unit control board) Mainly detect: ●Whether the compressor wiring is connected correct? ●Is compressor broken? ●Is time for compressor stopping enough? Fault diagnosis process: Power on the unit Restart it up after Is stop time of the compressor 3 minutes longer than 3 minutes?
  • Page 73 Service Manual 5. Out of step diagnosis for the compressor (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: ●Is the system pressure too high? ●Is the input voltage too low? Fault diagnosis process: Out of step occurs in Out of step occurs once the operation unit is powered on.
  • Page 74 Service Manual 6. Overload and air exhaust malfunction diagnosis (following AP1 for outdoor unit control board) Mainly detect: ●Is the PMV connected well or not? Is PMV damaged? ●Is refrigerant leaked? Fault diagnosis process: 20 minutes after the complete unit is powered off Is the terminal FA for the Connect the...
  • Page 75 Service Manual 7. Communication malfunction: (following AP1 for outdoor unit control board) Mainly detect: ●Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged? ●Detect the indoor and outdoor units connection wire and indoor and outdoor units inside wiring is connect well or not, if is there any damage? Fault diagnosis process: Start...
  • Page 76 Service Manual 8. Malfunction of Overcurrent Protection Main detection points: ● Is the supply voltage unstable with big fluctuation? ● Is the supply voltage too low with overload? ● Hardware trouble? Malfunction diagnosis process: Start Normal fluctuation should be within 10 % Is malfunction Is the supply voltage unstable with big fluctuation?

  • Page 77: 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 its due to power failure. If yes, No power supply, or poor After energization, operation indicator isnt bright wait for power recovery.
  • Page 78 Service Manual 4. ODU Fan Motor Can't Operate Possible causes Discriminating method (air conditioner status) Troubleshooting Connect wires according to wiring diagram to Wrong wire connection, or poor Check the wiring status according to circuit make sure all wiring terminals are connected connection diagram firmly...

  • Page 79: Exploded View And Parts List

    Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit GWH12AGB-K6DNA1B/I(CB385N04800) ON/OFF MODE I FEEL T-ON T-OFF TEMP CLOCK LIGHT WiFi SLEEP The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 80 Service Manual Description Evaporator Support Axile Bush Sub-assy Cross Flow Fan Evaporator Assy Motor Press Plate Wall Mounting Frame Sub-assy Fan Motor Rear Case Connecting pipe clamp Screw Cover Plasmacluster Ion Rubber Plug (Water Tray) Air Louver Crank Stepping Motor Stepping Motor Air Louver (Auto) Stepping Motor...
  • Page 81 Service Manual GWH24AGD-K6DNA1B/I(CB385N05600) ON/OFF MODE I FEEL T-ON T-OFF TEMP CLOCK LIGHT WiFi SLEEP The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 82 Service Manual Description Front Panel Front Case Assy Guide Louver Sub-assy 1 Guide Louver Sub-assy 2 Plug Pin Left Axile Bush Rear Case Cross Flow Fan Ring of Bearing O-Gasket sub-assy of Bearing Evaporator Support Evaporator Assy Fan Motor Motor Press Plate Wall Mounting Frame Sub-assy Electric Box Assy Connecting pipe clamp...
  • Page 83 Service Manual GWH09AGA-K6DNA4A/I GWH09AGA-K6DNA1A/I GWH12AGB-K6DNA1A/I GWH12AGB-K6DNA4A/I GWH12AGB-K6DNA1B/I(CB385N04801) FAN AUTO OPER ON/OFF On/Off Mode Swing MODE Sleep Temp Turbo Timer I Feel I FEEL T-ON T-OFF X-Fan Light TEMP CLOCK LIGHT WiFi SLEEP The component picture is only for reference; please refer to the actual product.
  • Page 84 Service Manual Description Evaporator Support Axile Bush Sub-assy Cross Flow Fan Evaporator Assy Motor Press Plate Wall Mounting Frame Sub-assy Fan Motor Rear Case Connecting pipe clamp Screw Cover Plasmacluster Ion Rubber Plug (Water Tray) Air Louver Crank Stepping Motor Stepping Motor Electric Box Assy Wire Clamp...
  • Page 85 Service Manual GWH18AGD-K6DNA1A/I GWH18AGD-K6DNA4A/I GWH24AGD-K6DNA1A/I GWH24AGD-K6DNA4A/I GWH24AGD-K6DNA1B/I(CB385N05601) FAN AUTO OPER On/Off Mode Swing Sleep Temp Turbo Timer I Feel X-Fan Light The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 86 Service Manual Description Front Panel Front Case Assy Guide Louver Sub-assy 1 Guide Louver Sub-assy 2 Plug Pin Left Axile Bush Rear Case Cross Flow Fan Ring of Bearing O-Gasket sub-assy of Bearing Evaporator Support Evaporator Assy Fan Motor Motor Press Plate Wall Mounting Frame Sub-assy Electric Box Assy Connecting pipe clamp...

  • Page 87: Outdoor Unit

    Service Manual 10.2 Outdoor Unit 09/12K 33 34 The component is only for reference;please refer to the actual product. Installation and Maintenance...
  • Page 88 Service Manual Description Coping Supporting Board(Condenser) 4-Way Valve Sponge(Condenser) Temperature Sensor Support Condenser Assy Capillary Sub-assy Sensor Insert Right Side Plate Earthing Plate Sub-assy Wire Clamp Handle Assy Silencer Cut-off valve 1/4(N) Cut-off valve 3/8(N) Valve Support 4-Way Valve Assy Compressor and Fittings Chassis Sub-assy Motor Support...
  • Page 89 Service Manual GWH18AGD-K6DNA1A/O 22 23 24 25 26 The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 90 Service Manual Description Handle Supporting Board Brushless DC Motor Motor Support Condenser Assy Coping Rear Grill Clapboard Sub-Assy Compressor and Fittings Compressor Gasket 4-Way Valve Assy Big Handle Cut off Valve Sub-Assy Cut off Valve Assy Valve Support Front Grill Cabinet Axial Flow Fan Chassis Sub-assy...
  • Page 91 Service Manual GWH24AGD-K6DNA1A/O GWH24AGD-K6DNA1B/O The component is only for reference;please refer to the actual product. Installation and Maintenance...
  • Page 92 Service Manual Description Rear Grill Axial Flow Fan Fan Motor Electric Box Assy Electric Box Radiator Main Board Electric Box Cover Terminal Board Handle Left Side Plate Coping Motor Support Clapboard Sub-Assy Condenser Assy 4-Way Valve Assy Rear Grill Right Side Plate Assy Valve Support Block Valve Support Block 1 Handle...

  • Page 93: Removal Procedure

    Service Manual 11. Removal Procedure Caution: discharge the refrigerant completely before removal. 11.1 Removal Procedure of Indoor Unit Step Procedure Before disassemble Turn off the air conditioner and disconnect the power before disassemble the air conditioner. 1. Remove filter Filter Hold the handle on the filter, pull it upwards to let the clasp at the top part of the filter loose, push it forwards and then the filter can be pulled out.
  • Page 94 Service Manual Step Procedure 3.Remove panel Panel rotation Open the front panel; separate the panel rotation Panel Display shaft from the groove fixing the front panel and then removes the front panel. Screws Note: The display of some models is fixed on the panel; unscrew the screws fixing the display on the panel before removing the panel.
  • Page 95 Service Manual Step Procedure 6.Remove electric box assy Electric box Remove the screw fixing electric box assy. Screw Step motor Indoor tube Grounding ① Cut off the wire binder and pull out the temperature sensor Electric box assy screw indoor tube temperature sensor. ②...
  • Page 96 Service Manual Step Procedure 5.Remove panel Remove 3 screws fixing evaporator assy. Screws At the back of the unit, Loosen the clasp of the connection pipe clamp and then remove the connection pipe clamp. Connecting pipe clamp First remove the left side of evaporator from the groove of bottom shell and then remove the right side from the clasp on the bottom shell.
  • Page 97 Service Manual Step Procedure 8. Remove motor and cross flow fan Remove 3 screws fixing motor clamp and then remove the motor clamp. Motor Press Plate Screws Loose the screws (2-3 circles) used for fixing the cross flow fan, pull right to pull out the motor. Screw 9.

  • Page 98: Removal Procedure Of Outdoor Unit

    Service Manual 11.2 Removal Procedure of Outdoor Unit 09/12K Steps Procedure 1. Before disassembly 2. Remove big handle and valve cover big handle Remove the connection screw fixing the big handle and then remove the valve cover. valve cover 3. Remove top cover top cover Remove connection screws connecting the top panel with the front panel and the...
  • Page 99 Service Manual Steps Procedure 4. Remove grille Remove connection screws between the front grille and the front panel. Then remove the grille. grille 5. Remove front panel Remove connection screws connecting the front panel with the chassis and the motor support and then remove the front panel.
  • Page 100 Service Manual Steps Procedure 8. Remove motor and motor support motor support Remove the tapping screws fixing the motor and disconnect the leading wire insert of the motor. Then remove the motor. Remove the tapping screws fixing the motor motor support and lift the motor support to remove it.
  • Page 101 Service Manual Steps Procedure 11. Remove compressor Unsolder the welding joint connecting the capillary, valves and the outlet pipe of condenser to remove the capillary. Do not 4-way valve block the capillary with welding slag during unsoldering. Remove the 2 screws fixing the gas valve and unsolder the welding joint between the gas valve and the air-return pipe to remove the gas valve.
  • Page 102 Service Manual Installation and Maintenance...
  • Page 103 Service Manual Installation and Maintenance...
  • Page 104 Service Manual Installation and Maintenance...
  • Page 105 Service Manual Capillary Sub-assy Installation and Maintenance...
  • Page 106 Service Manual Warning: Be sure to wait for a minimum of 20 minutes after turning off all power supplies and discharge the refrigerant completely before removal. Step Procedure 1. Remove handle Remove the screw fixing the handle and then handle remove the handle.
  • Page 107 Service Manual screws Rear Grill Installation and Maintenance...
  • Page 108 Service Manual Installation and Maintenance...
  • Page 109 Service Manual Installation and Maintenance...
  • Page 110 Service Manual Installation and Maintenance...
  • Page 111 Service Manual Installation and Maintenance...

  • Page 112: 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 display Fahrenheit display Fahrenheit display Fahrenheit Celsius （℃） Celsius （℃） Celsius （℃） （℉） （℉） （℉） temperature temperature temperature...

  • Page 113: Appendix 3: Pipe Expanding Method

    Service Manual Appendix 3: Pipe Expanding Method Pipe Note: Pipe cutter Improper pipe expanding is the main cause of refrigerant leakage.Please 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 114: 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) C) Resistance(kΩ) C) Resistance(kΩ) Resistance(kΩ) Resistance(kΩ) Temp( Temp( Temp( Temp( 138.1 18.75 3.848 1.071 128.6 17.93 3.711 1.039 121.6 17.14 3.579 1.009...
  • Page 115 Service Manual Resistance Table of Tube Temperature Sensors for Outdoor and Indoor(20K) C) Resistance(kΩ) C) Resistance(kΩ) Resistance(kΩ) Resistance(kΩ) Temp( Temp( Temp( Temp( 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 4.289...
  • Page 116 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor(50K) C) Resistance(kΩ) Resistance(kΩ) C) Resistance(kΩ) Resistance(kΩ) Temp( Temp( Temp( Temp( 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 117 JF00304625 GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI Add: West Jinji Rd, Qianshan, Zhuhai,Guangdong, China, 519070 Tel: (+86-756) 8522219 Fax: (+86-756) 8669426 E-mail: global@cn.gree.com www.gree.com For product improvement, specifications and appearance in this manual are subject to change without prior notice.

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