Gree GWH09YD-S6DBA2A Service Manual
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Change for Life
Service Manual
Models: GWH09YD-S6DBA2A
GWH12YD-S6DBA2A
(Refrigerant
R32)
:
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

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Summary of Contents for Gree GWH09YD-S6DBA2A

  • Page 1 Change for Life Service Manual Models: GWH09YD-S6DBA2A GWH12YD-S6DBA2A (Refrigerant R32) GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI...
  • Page 2: Table Of Contents

    5.2 PCB Printed Diagram ..................... 11 6. Function and Control ..................13 6.1 Remote Controller Introduction ..................13 6.2 GREE+ App Operation Manual ..................23 6.3 Ewpe Smart App Operation Manual ................24 6.4 Brief Description of Modes and Functions ..............25 Part Ⅱ : Installation and Maintenance ..........30...
  • Page 3 Service Manual 9. Maintenance ......................51 9.1 Error Code List .......................51 9.2 Procedure of Troubleshooting ..................58 9.3 Maintenance Method for Normal Malfunction ..............73 10. Exploded View and Parts List ..............75 10.1 Indoor Unit ........................75 10.2 Outdoor Unit .........................78 11. Removal Procedure ..................80 11.1 Removal Procedure of Indoor Unit ................80 11.2 Removal Procedure of Outdoor Unit ................85...
  • Page 4: Part Ⅰ : Technical Information

    Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit: GWH09YD-S6DBA2A/I GWH12YD-S6DBA2A/I Outdoor Unit: GWH09YD-S6DBA2A/O GWH12YD-S6DBA2A/O Remote Controller: YAG1FB YAG1FB3(WiFi) MODE ON/OFF Technical Information...
  • Page 5: Specifications

    Service Manual 2. Specifications 2.1 Specification Sheet Model GWH09YD-S6DBA2A GWH12YD-S6DBA2A Product Code CB466000100/CB466000102 CB466000200 Rated Voltage 220-240 220-240 Power Rated Frequency 50/60 50/60 Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity 2700 3530 Heating Capacity 3500 4200 Cooling Power Input...
  • Page 6 Service Manual Model of Outdoor Unit GWH09YD-S6DBA2A/O GWH12YD-S6DBA2A/O Outdoor Unit Product Code CB466W00100 CB466W00200 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO., LTD CO., LTD Compressor Model QXFT-B123zE170A QXFT-B123zE170A Compressor Oil FW68DA FW68DA/equivalent Compressor Type Rotary Rotary L.R.A. Compressor RLA...
  • Page 7: Operation Characteristic Curve

    Service Manual 2.2 Operation Characteristic Curve Cooling Heating Cooling Heating Condition Condition Indoor:DB 20°C Indoor:DB27°C WB19°C Indoor air flow: Super High Indoor air flow: Super High Pipe length:5m Pipe length:5m Compressor Frequency(Hz) Compressor Frequency(Hz) 2.3 Capacity Variation Ratio According to Temperature Cooling Heating Condition...
  • Page 8: Cooling And Heating Data Sheet In Rated Frequency

    Service Manual 2.4 Cooling and Heating Data Sheet in Rated Frequency Cooling: Rated cooling Pressure of gas pipe Inlet and outlet pipe condition(°C) connecting indoor and temperature of heat Fan speed of Fan speed of Model (DB/WB) outdoor unit exchanger indoor unit outdoor unit Indoor...
  • Page 9: Outline Dimension Diagram

    Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 09/12K Φ55 Φ55 Unit:mm Model 09K/12K Technical Information...
  • Page 10: Outdoor Unit

    Service Manual 3.2 Outdoor Unit GWH09YD-S6DBA2A/O GWH12YD-S6DBA2A/O Unit:mm Technical Information...
  • Page 11: Refrigerant System Diagram

    Service Manual 4. Refrigerant System Diagram INDOOR UNIT OUTDOOR UNIT GAS SIDE 3-WAY VALVE 4-Way valve Discharge HEAT EXCHANGE (EVAPORATOR) Accumlator Suction COMPRESSOR HEAT EXCHANGE (CONDENSER) Intercooler LIQUID SIDE Electron Strainer Strainer Strainer Capillary Strainer 2-WAY VALVE expansion valve COOLING HEATING Connection pipe specification: Liquid pipe:1/4"...
  • Page 12: 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 Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model. ●...
  • Page 13 Service Manual ● Outdoor Unit GWH12YD-S6DBA2A/O(CB466W00200) 60000700051401 GWH09YD-S6DBA2A/O(CB466W00100) 60000700051402 These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit. Technical Information...
  • Page 14: Pcb Printed Diagram

    Service Manual 5.2 PCB Printed Diagram ● Indoor Unit Top view Name Neutral wire Needle stand for indoor fan Auto button Up&down swing motor left&right swing motor Interface of temperature sensor Terminal for display board connection Terminal of jumper cap Communication wire Connect earthing wire(only for the mode with this function)
  • Page 15 Service Manual ● Outdoor Unit Top view Name 4 5 6 8 9 10 Terminal of compressor Overload Terminal of compressor Terminal of temperature sensor Te r m i n a l o f e l e c t r o n i c expansion valve 1 Te r m i n a l o f e l e c t r o n i c expansion valve 2...
  • Page 16: Function And Control

    Service Manual 6. Function and Control 6.1 Remote Controller Introduction Buttons on Remote Controller 1. ON/OFF button 1. ON/OFF button Press this button to turn on the unit. Press this button again to turn off the unit. Press this button to turn on the unit. Press this button again to turn off the unit. YAG1FB 2.
  • Page 17 ATUO Service Manual 2. FAN button Low fan Medium-low fan Medium fan Medium-high fan High fan Press this button, Auto, Low, Medium-low, Medium, Medium-high, High speed can be circularly selected. After powered on, Auto fan speed is default. Under DRY mode, Low fan speed only can be set up. ATUO Note: It’s Low fan speed under Dry mode.
  • Page 18 Service Manual 10. TEMP button Press this button, you can see indoor set temperature, indoor ambient temperature or outdoor ambient temperature on indoor unit’s display. The setting on remote controller is selected circularly as below: no display When selecting " "...
  • Page 19 Service Manual ●Sleep 3- the sleep curve setting under Sleep mode by DIY: (1) Under Sleep 3 mode, press "Turbo" button for a long time, remote control enters into user individuation sleep setting status, at this time, the time of remote control will display "1hour ", the setting temperature "88" will display the corresponding temperature of last setting sleep curve and blink (The first entering will display according to the initial curve setting value of original factory);...
  • Page 20: Operation Guide

    Service Manual 28.WIFI Function Press "MODE" and "TURBO" button simultaneously to turn on or turn off WIFI function. When WIFI function is turned on, the " " icon will be displayed on remote controller; Long press "MODE" and "TURBO" buttons simultaneously for 10s, remote controller will send WIFI reset code and then the WIFI function will be turned on.
  • Page 21 Service Manual ON/OFF button YAG1FB3(WiFi) FAN button MODE button +/- button TURBO button button button CLOCK button TIMER ON/ WiFi TIMER OFF button TEMP button button (before opening cover (after opening cover I FEEL button ON/OFF button LIGHT button WiFi button FAN button QUIET button MODE button...
  • Page 22 Service Manual ATUO Low fan Medium-low fan Medium fan Medium-high fan High fan Note: It’s Low fan speed under Dry mode. X-FAN function:Hold fan speed button for 2s in COOL or DRY mode, the icon “ ” is displayed and the indoor fan will continue operation for a few minutes in order to dry the indoor unit even though you have turned off the unit.
  • Page 23 Service Manual Note: Outdoor temperature display is not available for some models. At that time, indoor unit receives " " signal, while it displays indoor set temperature. Press this button once, to turn on the I FEEL function, then the figure of "I FEEL"will be displayed, after every press of other function button, every 200ms to sendI FEEL once, after this function started, the remote controller will send temperatureto the main un it in every 10 minutes.
  • Page 24 Service Manual (4) When setting the initial temperature 30℃, under this temperature setting, after 7hours, the temperature will be decreased 1℃, after that the unit will keep onrunning under this temperature; In Heat mode: (1) Under the initial presetting temperature 16℃, it will run under this setting temperature all along. (2) Under the initial presetting temperature17℃-20℃, after Sleep function started up, the temperature will decrease 1℃...
  • Page 25 Service Manual 1. After powered on, press ON/OFF button, the unit will start to run. (Note: When it is powered on, the guide louver of main unit will close automatically.) 2. Press MODE button, select desired running mode. WiFi 3. Pressing + or - button, to set the desired temperature. 4.
  • Page 26: Gree+ App Operation Manual

    GREE+ App Download Linkage Scan the QR code or search "GREE+" in the application market to download and install it. When "GREE+" App is installed, register the account and add the device to achieve long-distance control and LAN control of Gree smart home appliances.
  • Page 27: Ewpe Smart App Operation Manual

    Service Manual 6.3 Ewpe Smart App Operation Manual Control Flow Chart Internet Cloud intelligent Home Wi-Fi Cellular/ 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 4.0 and above version above version...
  • Page 28: Brief Description Of Modes And Functions

    Service Manual 6.4 Brief Description of Modes and Functions 1. Temperature Parameters ◆ Indoor preset temperature (T preset ◆ Indoor ambient temperature (T amb. 2. Basic Functions Once energized, in no case should the compressor be restarted within less than 3 minutes. In the situation that memory function is available, for the first energization, if the compressor is at stop before de-energization, the compressor will be started without a 3-minute lag;...
  • Page 29 Service Manual ◆ When compressor is running (not including each malfunction and protection): a.When outdoor ambient temperature≥20°C(68°F) and indoor fan speed is low or medium, the fan speed will turn to high; if indoor fan speed is high or super high, it will keep the same. b.When outdoor ambient temperature≤18°C(64.4°F) , the fan speed will resume set fan speed.
  • Page 30 Service Manual c.For heating and cooling unit, when 22°C(71.6°F)<Tindoor ambient<26°C(78.8°F) (for cooling only unit, 22°C(71.6°F)<Tindoor ambient<26°C)(78.8°F), it will keep the original running mode. If the unit is energized for the first time, it will run in fan mode. ② Protection a.
  • Page 31 Service Manual 1. In cooling mode: 1.1 When the initial set temperature is16-23°C(60.8~73.4°F),the temperature will rise 1°C(1.8°F) by every hour after sleep function is set;the temperature will not change after rising 3°C(5.4°F) ;after running for 7hours,the temperature will decrease1°C(1.8°F) and it will not change after that.
  • Page 32 Service Manual 1. Under heating mode: auto speed under heating or auto heating mode: a. When T ≤T +1°C(1.8°F), indoor fan will operate at high speed; amb. preset b. When T +1°C(1.8°F)<T <T +3°C(5.4°F), indoor fan will operate at medium speed; preset amb.
  • Page 33: 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 34 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 35: Installation Notes

    Service Manual Safety Operation of Flammable Refrigerant Qualification requirement for installation and maintenance man ●All the work men who are engaging in the refrigeration system should bear the valid certification awarded by the authoritative organization and the qualification for dealing with the refrigeration system recognized by this industry. If it needs other technician to maintain and repair the appliance, they should be supervised by the person who bears the qualification for using the flammable refrigerant.
  • Page 36 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 37: Installation

    Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall Space to the wall At least 5 7/8 At least 5 7/8 Drainage pipe Installation and Maintenance...
  • Page 38: Installation Procedures

    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 39: Installation Parts-Checking

    Service Manual 8.4 Electric Connection Requirement 8.2 Installation Parts-checking 1. Safety Precaution Name Name (1) Must follow the electric safety regulations when installing Indoor unit Sealing gum the unit. Outdoor unit Wrapping tape (2) According to the local safety regulations, use qualified Support of outdoor power supply circuit and air switch.
  • Page 40 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 41 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 Screw...
  • Page 42: Installation Of Outdoor Unit

    Service Manual 8.6 Installation of Outdoor Unit (3) Pretightening the union nut with hand. (4) Tighten the union nut with torque wrench . 1. Fix the Support of Outdoor Unit(Select it according to Refer to the following table for wrench moment of force: the actual installation situation) (1) Select installation location according to the house structure.
  • Page 43: Vacuum Pumping And Leak Detection

    Service Manual Note: 2. Leakage Detection (1) With leakage detector: (1) The through-wall height of drain hose shouldn't 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 44: Wired Controller

    Service Manual 8.9 Wired Controller If the product you bought is equipped with wired controller, please refer to the following introductions of wired controller. 1.Displaying Part Fig1.1.1 Outline of wired controller 1.1 LCD Display of Wired Controller Fig.1.1.2 LCD display 1.2 Instruction to LCD Display Description Symbols...
  • Page 45 Service Manual Lock function Shield functions (Button operation, temperature setting, On/Off operation,Mode setting are SHIELD disabled by the remote monitoring system.) TURBO Turbo function state Memory function (The indoor unit resumes the original setting state after power failure and MEMORY then power recovery) It blinks under on state of the unit without operation of any button SAVE...
  • Page 46 Service Manual 3 Operation Instructions 3.1 On/Off Press On/Off to turn on the unit and turn it off by another press. Note: The state shown in Fig.3.1.1 indicates the “Off” state of the unit after power on. The state shown in Fig.3.1.2 indicates the “On” state of the unit after power on.
  • Page 47 Service Manual • Timer off setting: Under on-state of the unit without timer setting, if Timer button is pressed, LCD will display xx. Hour,with OFF blinking. In this case, press▲ or ▼ button to adjust timer on and then press Timer to confirm. •...
  • Page 48 Service Manual Timer range: 0.5-24hr. Every press of ▲or ▼ will make the set time increased or decreased by 0.5hr. If either of them is pressed continuously, the set time will increase/ decrease by 0.5hr every 0.5s. 3.6 Swing Setting Swing On: Press Function under on state of the unit to activate the swing function.
  • Page 49 Service Manual Turn off the unit,without Sleep Press Function repeatedly unitll Press Enter/Cancel to activated the Sleep function activated go to the Sleep setting status function Press Enter/Cancel to cancel this Press Function repeatedly unitll go to the Fig.3.7.1. Sleep Setting setting Sleep function again 3.8 Turbo Setting...
  • Page 50 Service Manual 3.9 E-heater Setting E-heater (auxiliary electric heating function): In the Heating mode, E-heater is allowed to be turned on for improvement of effciency. Once the wired controller or the remote controller enters the Heating mode, this function will be turned on automatically. Press Function in the Heating mode to enter the E-heater setting interface and then press Enter/Cancel to cancel this function.
  • Page 51 Service Manual Notes: (1)When the Blow function is activated, if turning off the unit by pressing On/Off or by the remote controller, the indoor fan will run at the low fan speed for 2 min, with “BLOW” displayed on the LCD. While, if the Blow function is deactivated, the indoor fan will be turned off directly.
  • Page 52 Service Manual Fig.4.2 Fig.4.2 Fig.4.2 shows the installation steps of the wired controller, but there are some issues that need your attention. (1) Prior to the installation, please firstly cut off the power supply of the wire buried in the installation hole, that is, no operation is allowed with electricity during the whole installation.
  • Page 53 Service Manual 5 Errors Display If there is an error occurring during the operation of the system, the error code will be displayed on the LCD, as show in Fig.5.1. If multi errors occur at the same time, their codes will be displayed circularly. Note: In event of any error, please turn off the unit and contact the professionally skilled personnel.
  • Page 54: Maintenance

    Service Manual 9. Maintenance 9.1 Error Code List Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator During cooling and drying Possible reasons: High operation, except indoor...
  • Page 55 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator When the outdoor unit receive signal of Gathering refrigerant Gathering ,the system will be forced to Nominal cooling mode...
  • Page 56 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator Decrease Overload or temperature is too All loads operate normally, frequency high;...
  • Page 57 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator Compressor intermediate Showing during middle cooling or frequence in middle heating test test state During cooling and drying...
  • Page 58 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator During cooling and drying operation, compressor will stop Refer to the malfunction analysis System is while indoor fan will operate;...
  • Page 59 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator Malfunction of During cooling and drying phase current operation, compressor will stop detection while indoor fan will operate;...
  • Page 60 Service Manual Display Method of Indoor Unit Indicator Display (during blinking, ON 0.5s and OFF Dual-8 Malfunction A/C status Possible Causes 0.5s) Code Name Operation Cool Heating Display Indicator Indicator Indicator Normal communica- tion OFF 3S Defrosting will occur in and blink heating once...
  • Page 61: Procedure Of Troubleshooting

    Service Manual 9.2 Procedure of Troubleshooting 1. Malfunction of Temperature Sensor F1, F2 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 62: Installation And Maintenance

    Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 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 63 Service Manual 3. Malfunction of Protection of Jumper Cap C5 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? ●...
  • Page 64 Service Manual 4. Malfunction of Overcurrent Protection E5 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 of the rated voltage on the nameplate...
  • Page 65 Service Manual 5. Communication Malfunction E6 Start Cut off power supply. Check if connection line of IDU and ODU and the wire inside electric box are correctly connected. Connect the line Correct connection? according to Malfunction eliminated? wiring diagram. Main board matches Match correctly with display board? Main board of Malfunction eliminated?
  • Page 66 Service Manual 6. Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8 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...
  • Page 67 Service Manual 7. Malfunction of detecting plate(WIFI) JF 5. Malfunction of detecting plate(WIFI) JF Start check if the connection wire are correctly connected detecting Replace the plate with the same model Is malfunction eliminated Replace the mainboard with the same model The end Installation and Maintenance...
  • Page 68 Service Manual Outdoor Unit 1. Capacity charging malfunction (outdoor unit malfunction) (AP1 below means control board of outdoor unit) Main detection points: ● Detect if the voltage of L and N terminal of XT wiring board is between 210VAC-240VAC by alternating voltage meter; ●...
  • Page 69 Service Manual 2. IPM protection(H5), desynchronizing malfunction(H7), overcurrent of compressor phase current (P5) (AP1 below means control board of outdoor unit) Main detection points: ● Is voltage input within the normal range ● If the control board AP1 is well connected with compressor COMP? If they are loosened? If the connection sequence is correct? ●...
  • Page 70 Service Manual 3. High temperature and overload protection (E8)(AP1 below means control board of outdoor unit) Main detection points: ● If the outdoor ambient temperature is in normal range; ● If the indoor and outdoor fan are running normally; ● If the radiating environment of indoor and outdoor unit is good. E8 is displayed Normal protection, please If the outdoor...
  • Page 71 Service Manual 4. Start-up failure (LC) (AP1 below means control board of outdoor unit) Main detection points: ● If the compressor wiring is correct? ● If the stop time of compressor is sufficient? ● If the compressor is damaged? ● If the refrigerant charging amount is too much? Turn on the unit The stop time is not sufficient and If the stop time of compressor...
  • Page 72 Service Manual 5. Overload and high discharge temperature malfunction Main detection points: ● If the electronic expansion valve is connected well? Is the electronic expansion valve damaged? ● If the refrigerant is leaked? ● The compressor overload protection terminal is not connected well with the mainboard? ●...
  • Page 73 Service Manual H3 or E4 is displayed 30min after power off the unit If the overload protector SAT is well connected? Under ambient temperature, test the resistance of overload protector with ohmmeter; resistance value should be<1000ohm Connect wire If the wiring terminal FA of electronic according to wiring expansion valve is well connected? diagram...
  • Page 74 Service Manual 6. PFC (correction for power factor) malfunction (outdoor unit malfunction) Main detection points: ● Check if power plug is connected well with the socket ● Check if the reactor of outdoor unit is damaged? Malfunction diagnosis process: start If power plug is connected Is the malfunction Connect the plug correctly...
  • Page 75 Service Manual 7. Communication malfunction (E6) Main detection points: ● Check if the connection wire and the built-in wiring of indoor and outdoor unit are connected well and without damage; ● If the communication circuit of indoor mainboard is damaged? If the communication circuit of outdoor mainboard (AP1) is damaged? Malfunction diagnosis process: If the unit operates normally before malfunction...
  • Page 76: Maintenance Method For Normal Malfunction

    Service Manual 9.3 Maintenance Method 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 After energization, operation indicator isn’t bright wait for power recovery.
  • Page 77 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 78: Exploded View And Parts List

    Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit MODE ON/OFF The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 79 Service Manual Part Code Description GWH09YD-S6DBA2A/I GWH12YD-S6DBA2A/I Product Code CB466N00100 CB466N00200 Front Panel 00000300008303 00000300008303 Filter Sub-Assy 11122089 11122089 Front Case Sub-Assy 00000200060 00000200060 Axile Bush 10542036 10542036 Guide Louver 10512501 10512501 Ring of Bearing 26152025 26152025 O-Gasket of Cross Fan Bearing...
  • Page 80 Service Manual Part Code Description GWH09YD-S6DBA2A/I Product Code CB466N00102 Front Panel 00000300008303 Filter Sub-Assy 11122089 Front Case Sub-Assy 00000200060 Axile Bush 10542036 Guide Louver 10512501 Ring of Bearing 26152025 O-Gasket of Cross Fan Bearing 76512203 Cross Flow Fan 10352060 Air Louver(Manual)
  • Page 81: Outdoor Unit

    Service Manual 10.2 Outdoor Unit The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 82 Service Manual Part Code Description GWH09YD-S6DBA2A/O GWH12YD-S6DBA2A/O Product Code CB466W00100 CB466W00200 Front Grill 22413046 22413046 Cabinet 01433034P 01433034P Axial Flow Fan 10333011 10333011 Brushless DC Motor 1501308511 1501308511 Clapboard Sub-Assy 01235094 01235094 Left Side Plate 01303169P 01303169P Valve Cover 22243005...
  • Page 83: Removal Procedure

    Service Manual 11. Removal Procedure Caution: discharge the refrigerant completely before removal. 11.1 Removal Procedure of Indoor Unit Step Procedure 1.Remove filter Panel Open the panel. Loosen the clasp shown and then pull the left filter and right filer outwards to remove them. Left filter and right filer 2.Remove horizontal louver Push out the axile bush on horizontal...
  • Page 84 Service Manual Step Procedure 3.Remove display and panel Screws Screws that are locking the display board. Display Separate the display board from the front Panel panel. Open the front panel; separate the panel rotation shaft from the groove fixing the front panel and then removes the front panel.
  • Page 85 Service Manual Step Procedure 7.Remove cold plasma generator Cold plasma generator Screws that are locking the cold plasma Screw generator.Separate the display board from the evaporator assy. 8.Remove temperature sensor and grounding wire Temperature sensor Grounding wire Cut off the tieline which binding the temperature sensor and grounding wire on the evaporator, and then pull out the indoor tube temperature sensor from the...
  • Page 86 Service Manual Step Procedure 11.Electric box assy Remove the screw fixing electric box assy and then remove the electric box assy. Electric box assy Screw 12.Remove connection pipe clamp Screw Connection pipe clamp At the back of the unit, remove the screw fixing connection pipe clamp and then remove the connection pipe clamp.
  • Page 87 Service Manual Step Procedure 15.Remove motor and cross flow blade Motor clamp Remove the screws fixing motor clamp Screws and then remove the motor clamp. Remove the screws at the connection place of cross flow blade and motor; lift the motor and cross flow blade upwards to remove them.
  • Page 88: Removal Procedure Of Outdoor Unit

    Service Manual 11.2 Removal Procedure of Outdoor Unit 1. Before disassembly 2. Remove top cover Remove the screws connecting top cover, left and right side plate, as well as panel, to remove the top top cover cover. 3. Remove handle Remove the screws connecting handle and right side plate, to remove the handle.
  • Page 89 Service Manual 4. Remove panel and grille Remove the screws fixing panel, to remove the panel. Remove the screws connecting panel grille and panel, loosen the clamp, to remove the panel grille. panel grille 5. Remove valve cover Remove the screw fixing valve cover, to remove the cover.
  • Page 90 Service Manual 6. Remove left side plate Remove the screws fixing left side plate and condenser support board, to remove the left side plate. left side plate 7. Remove cross fan blade Remove the screw nut fixing cross fan blade, remove the gasket and spring cushion, to remove the cross fan blade.
  • Page 91 Service Manual 9. Remove electric box assy cover electric box Remove screws fixing electric box assy and mid-isolation board, loosen the bonding tie, pull off the wiring terminal, lift to remove the electric box assy. electric box assy 10. Remove electric reactor Remove the screws fixing electric reactor, to remove the electric reactor.
  • Page 92 Service Manual 12. Remove mid-isolation board Remove the screws connecting mid-isolation board, chassis and condenser assy, to remove the mid-isolation. mid-isolation board 13. Remove four-way valve assy four-way valve assy Welding cut the spot weld of four-way valve assy, compressor air suction/discharging valve and condenser pipe outlet, lift to remove the four-way valve assy.
  • Page 93 Service Manual 15. Remove big and small valve assy Remove screws connecting condenser assy and chassis, to remove the condenser assy. Remove the screws fixing big and small valve, to remove the valves. small valve big valve condenser assy Installation and Maintenance...
  • Page 94: 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(°C) Celsius(°C) Celsius(°C) temperature (°F) temperature (°F) temperature (°F) (°F) (°F) (°F)
  • Page 95: 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 96: 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) Temp( C) Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 138.1 18.75 3.848 1.071 128.6 17.93 3.711 1.039 121.6 17.14 3.579 1.009...
  • Page 97 Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) Temp( C) Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 181.4 25.01 5.13 1.427 171.4 23.9 4.948 1.386 162.1 22.85 4.773 1.346 153.3 21.85 4.605 1.307 20.9 4.443 1.269 137.2...
  • Page 98 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor (50K) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) 853.5 18.34 4.75 799.8 93.42 17.65 4.61 89.07 16.99 4.47 703.8 84.95 16.36 4.33 660.8 81.05 15.75 4.20 620.8 77.35 15.17 4.08...
  • Page 99 GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI Add: West Jinji Rd, Qianshan, Zhuhai, Guangdong, China 519070 Tel: (+86-756) 8522218 Fax: (+86-756) 8669426 Email: gree@gree.com.cn Http://www.gree.com HONG KONG GREE ELECTRIC APPLIANCES SALES LIMITED Add: Unit 2612,26/F.,Miramar Tower 132 Nathan Road,TST,Kowloon,HK Tel: (852) 31658898 Fax: (852) 31651029...

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