Gree GWH09QD-S6DBC2A/I Service Manual
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Gree GWH09QD-S6DBC2A/I Service Manual

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Service Manual
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

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Summary of Contents for Gree GWH09QD-S6DBC2A/I

  • Page 1 Change for life Service Manual GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI...
  • Page 2 6. Function and Control ..................27 6.1 Remote Controller Introduction for YAG1FB3(WiFi) ........27 6.2 Remote Controller Introduction for YAG1FB2(WiFi) ........32 6.3 GREE+ App Operation Manual ................37 6.4 Ewpe Smart App Operation Manual ..............38 6.5 Brief Description of Modes and Functions ...........39 Part Ⅱ...
  • Page 3 Service Manual 8.4 Requirements for electric connection ............50 8.5 Installation of Indoor Unit ..................50 8.6 Installation of Outdoor Unit ................53 8.7 Vacuum Pumping and Leak Detection ............54 8.8 Check after Installation and Test Operation ..........54 9. Maintenance ......................55 9.1 Error Code List ......................55 9.2 Procedure of Troubleshooting ................61...
  • Page 4 Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit: GWH09QD-S6DBC2A/I GWH12QD-S6DBC2A/I GWH09QC-S6DBC8A/I GWH12QC-S6DBC8A/I GWH09QD-S6DBD2A/I GWH12QD-S6DBD2A/I GWH18QE-S6DBD2B/I GWH24QE-S6DBD2A/I GWH09QD-S6DBE4A/I GWH12QD-S6DBE4A/I GWH18QE-S6DBE4B/I GWH24QE-S6DBE4A/I GWH09QD-S6DBE6A/I GWH12QD-S6DBE6A/I GWH18QE-S6DBE6B/I GWH24QE-S6DBE6A/I GWH09QD-S6DBD6A/I GWH12QD-S6DBD6A/I GWH18QE-S6DBD6B/I GWH24QE-S6DBD6A/I Technical Information...
  • Page 5 Product code Indoor model Outdoor model code product code Controller 1 GWH09QD-S6DBC2A CB439014909 GWH09QD-S6DBC2A/I CB439N14900 2 GWH09QD-S6DBD2A CB461006109 GWH09QD-S6DBD2A/I CB461N06100 3 GWH09QD-S6DBE4A CB470005009 GWH09QD-S6DBE4A/I CB470N05000 GWH09YD-S6DBA2A/O CB466W00109 4 GWH09QD-S6DBE6A CB465003309 GWH09QD-S6DBE6A/I CB465N03300 5 GWH09QD-S6DBD6A CB460007009 GWH09QD-S6DBD6A/I CB460N07000 6 GWH09QC-S6DBC8A CB456007000 GWH09QC-S6DBC8A/I CB456N07000 GWH09ACC-S6DBA1A/O CB497W09200...
  • Page 6 Service Manual 2. Specifications 2.1 Specification Sheet Model GWH09QC-S6DBC8A GWH12QC-S6DBC8A Product Code CB456007000 CB456006900 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 Heating Power Input 1000 Cooling Power Current...
  • Page 7 Service Manual Model of Outdoor Unit GWH09ACC-S6DBA1A/O GWH12ACC-S6DBA1A/O Outdoor Unit Product Code CB497W09200 CB497W10000 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO., LTD CO., LTD Compressor Model QXFT-B123zE170B QXFT-B123zE170B Compressor Oil FW68DA FW68DA Compressor Type Rotary Rotary L.R.A. Compressor RLA Compressor Power Input 1230 1230...
  • Page 8 Air Flow Volume(SH/H/MH/M/ML/L/SL) 800/730/680/630/580/450/350 Dehumidifying Volume 4.91 4.70 SEER 8.50 HSPF SCOP(Awerage/Warmer/Colder) 5.1/5.7/3.8 Application Area 12-18 1.GWH09QD-S6DBC2A/I 2.GWH09QD-S6DBD2A/I Model of indoor unit 3.GWH09QD-S6DBE4A/I 4.GWH09QD-S6DBE6A/I 5.GWH09QD-S6DBD6A/I 1.CB439N14900 2.CB461N06100 Indoor Unit Product Code 3.CB470N05000 4.CB465N03300 5.CB460N07000 Fan Type Cross-flow Diameter Length(DXL) Φ106X706...
  • Page 9 Service Manual Model of Outdoor Unit GWH09YD-S6DBA2A/O Outdoor Unit Product Code CB466W00109 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD Compressor Model QXFT-B123zE170B Compressor Oil FW68DA/equivalent Compressor Type Rotary L.R.A. Compressor RLA Compressor Power Input 1230 Overload Protector Throttling Method Electron expansion valve Operation Temp 8~30 Ambient Temp (Cooling)
  • Page 10 Service Manual 1.GWH12QD-S6DBC2A 2.GWH12QD-S6DBD2A Model 3.GWH12QD-S6DBE4A 4.GWH12QD-S6DBE6A 5.GWH12QD-S6DBD6A 1.CB439014808 2.CB461006208 Product Code 3.CB470005108 4.CB465003408 5.CB460006908 Rated Voltage 220-240 Power Rated Frequency 50/60 Supply Phases Power Supply Mode Outdoor Cooling Capacity 3530 Heating Capacity 4200 Cooling Power Input Heating Power Input Cooling Power Current 5.10 Heating Power Current...
  • Page 11 Service Manual Model of Outdoor Unit GWH12YD-S6DBA2A/O Outdoor Unit Product Code CB466W00208 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD Compressor Model QXFT-B123zE170A Compressor Oil FW68DA/equivalent Compressor Type Rotary L.R.A. Compressor RLA Compressor Power Input 1230 Overload Protector Throttling Method Electron expansion valve Operation Temp 16~30 Ambient Temp (Cooling)
  • Page 12 Service Manual 1.GWH18QE-S6DBD2B 2.GWH18QE-S6DBE4B Model 3.GWH18QE-S6DBE6B 4.GWH18QE-S6DBD6B 1.CB461005900 2.CB470005200 Product Code 3.CB465003600 4.CB460006800 Rated Voltage 220-240 Power Rated Frequency 50/60 Supply Phases Power Supply Mode Outdoor Cooling Capacity 5300 Heating Capacity 6200 Cooling Power Input 1180 1450 Heating Power Input Cooling Power Current Heating Power Current Rated Input...
  • Page 13 Service Manual Model of Outdoor Unit GWH18ACE-S6DBA1A/O Outdoor Unit Product Code CB497W11000 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD Compressor Model QXFT-D20zF030 Compressor Oil FW68DA Compressor Type Rotary L.R.A. Compressor RLA 10.5 Compressor Power Input 2260 Overload Protector Throttling Method Electron expansion valve Operation Temp 16~30...
  • Page 14 Service Manual 1.GWH24QE-S6DBD2A 2.GWH24QE-S6DBE4A Model 3.GWH24QE-S6DBE6A 4.GWH24QE-S6DBD6A 1.CB461006000 2.CB470005300 Product Code 3.CB465003500 4.CB460007100 Rated Voltage 220-240 Power Rated Frequency 50/60 Supply Phases Power Supply Mode Outdoor Cooling Capacity 7034 Heating Capacity 7034 Cooling Power Input 1850 Heating Power Input 1750 Cooling Power Current Heating Power Current 10.76...
  • Page 15 Service Manual Model of Outdoor Unit GWH24YE-S6DBA2A/O Outdoor Unit Product Code CB466W00300 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD Compressor Model QXFT-D20zF030 Compressor Oil FW68DA Compressor Type Rotary L.R.A. Compressor RLA Compressor Power Input 2050 Overload Protector Throttling Method Electron expansion valve Operation Temp 16~30 Ambient Temp (Cooling)
  • Page 16 Service Manual 2.2 Capacity Variation Ratio According to Temperature Cooling Heating Condition Condition Indoor:DB 20°C Indoor:DB 27°C WB19°C Indoor air flow:Super High Indoor air flow: Super High Pipe length: Pipe length:5m -30 -25 -20 -15 -10 3 40 2 4 50 2 5 54 Outdoor temp(°C) Outdoor temp.
  • Page 17 Service Manual 18/24K Cooling Heating Condition Condition Indoor:DB 20°C Indoor:DB 27°C WB19°C Indoor air flow:Super High Indoor air flow: Super High Pipe length:5/7.5m Pipe length:5/7.5m 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 Outdoor temp.
  • Page 18 Service Manual 2.4 Noise Curve Heating Cooling 9/12K Super Middle Middle Super Compressor frequency(Hz) Middle High High High Indoor fan motor rotating speed Indoor fan motor rotating speed Heating Cooling Super Middle Middle Super Compressor frequency(Hz) Middle High High High Indoor fan motor rotating speed Indoor fan motor rotating speed Technical Information...
  • Page 19 Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 123.5 179.5 Φ55 Φ55 124.7 83.2 Φ55 Φ55 Φ70 Φ70 Unit:mm Models 1078 Technical Information...
  • Page 20 Service Manual 3.2 Outdoor Unit GWH09ACC-S6DBA1A/O GWH09YD-S6DBA2A/O GWH12ACC-S6DBA1A/O GWH12YD-S6DBA2A/O Unit:mm GWH18ACE-S6DBA1A/O GWH18ACE-S6DBA1A/O 1003 Unit:mm Technical Information...
  • Page 21 Service Manual 4. Refrigerant System Diagram Cooling & Heating model 18K： 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...
  • Page 22 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 23 Service Manual All model except: GWH12QC-S6DBC8A/I GWH09QC-S6DBC8A/I 60000700033807 ● Outdoor Unit GWH12ACC-S6DBA1A/O GWH09ACC-S6DBA1A/O 60000706165401 Technical Information...
  • Page 24 Service Manual GWH12YD-S6DBA2A/O 60000706225101 GWH09YD-S6DBA2A/O 600007062251 Technical Information...
  • Page 25 Service Manual GWH18ACE-S6DBA1A/O 600007062268 GWH24YE-S6DBA2A/O 600007000800 These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit. Technical Information...
  • Page 26 Service Manual 5.2 PCB Printed Diagram ● Indoor Unit Top view Name Neutral wire Needle stand for indoor fan Auto button Up&down swing interface Grounding wire Interface of temperature sensor Terminal for display board connection Terminal of jumper cap Communication wire Fuse Live wire interface Interface of health function...
  • Page 27 Service Manual ● Outdoor Unit 09/12K Top view Name 4 5 6 8 9 10 Terminal of compressor Overload Terminal of compressor Terminal of temperature sensor Terminal of electronic expansion valve 1 Terminal of electronic expansion valve 2 Low-temperature cooling sensor Terminal of outdoor fan Terminal of chassis electric...
  • Page 28 Service Manual ● Top view Name 1 Interface of compressor Interface of temperature sensor Terminal of compressor overload protection Low-temperature cooling sensor 5 Cooling A valve 6 Cooling B valve 7 Interface of outdoor motor 8 Interface of 2-way valve 9 Interface of 4-way valve Terminal of chassis electric heating...
  • Page 29 Service Manual ● Top view Name Interface of compressor Interface of temperature sensor Te r m i n a l o f c o m p r e s s o r overload protection Low-temperature cooling sensor Cooling A valve Cooling B valve Interface of outdoor motor Interface of 2-way valve...
  • Page 30 Service Manual 6. Function and Control 6.1 Remote Controller Introduction for YAG1FB3(WiFi) ON/OFF button 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...
  • Page 31 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 32 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. NOTE: This function is applicable to partial of models. 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 33 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 34 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 35 Service Manual 6.2 Remote Controller Introduction for YAG1FB2(WiFi) ON/OFF button 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...
  • Page 36 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 37 Service Manual Attention: When displaying the outdoor ambient, the displaying range is 0-60℃ When it goes beyond the range, it keeps the threshold data (the smallest—0℃ and the largest 60℃). Warm tips: When operating buttons on the cover please make sure the cover is closed completely. Note: Outdoor temperature display is not available for some models.
  • Page 38 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 39 Service Manual If “H1” is displayed on the remote controller while it’s not operated by the professional person/after-sales person, it belongs to the misoperation. Please operate it as below to cancel it.Under the OFF status of remote controller, hold the Mode button for 5s to cancel “H1” display. Note: If remote controller displays “H1”, it belongs to the normal function reminder.
  • Page 40 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 41 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 42 Service Manual 6.5 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 43 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 44 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 45 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 46 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 47 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 48 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 49 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 50 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 51 Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall At least 15cm At least 15cm Space to the wall Drainage pipe Installation and Maintenance...
  • Page 52 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 53 Service Manual 8.4 Requirements for electric connection 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. (2) According to the local safety regulations, use qualified Outdoor unit Wrapping tape power supply circuit and air switch.
  • Page 54 Service Manual (2) Drill the screw fixing holes on the wall with impact drill (the 5. Connect the Pipe of Indoor Unit specification of drill head should be the same as the plastic (1) Aim the pipe joint at the corresponding bellmouth.(As show expansion particle) and then fill the plastic expansion particles in Fig.5) in the holes.
  • Page 55 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 56 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 57 Service Manual Note: 2. Leakage Detection (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 58 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 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 Refrigerant Refrigerant recovery. recovery The Serviceman operates it Nominal cooling mode mode for maintenance.
  • Page 60 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 61 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 62 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 63 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 64 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 65 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 cant operate? ●...
  • Page 66 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 67 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 68 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 69 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 70 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 71 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 72 Service Manual 2. 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 73 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 74 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 75 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 76 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 77 Service Manual 6. 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 78 Service Manual 9.3 Maintenance Method for Normal Malfunction 1. Air Conditioner Cant 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 79 Service Manual 4. ODU Fan Motor Cant 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 80 Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 81 Service Manual Part Code Description GWH09QC-S6DBC8A/I GWH12QC-S6DBC8A/I Product Code CB456N07000 CB456N06900 Front Panel 20000300154T 20000300154T Display Board 30565281 30565281 Front Case Assy 00000200045 00000200045 Guide Louver 1051293101 1051293101 Air Louver (left) 10512725 10512725 Swing Lever 10582459 10582459 Helicoid Tongue 26112436 26112436 Rear Case assy 00000100092...
  • Page 82 Service Manual The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 83 Service Manual Part Code Description GWH09QD-S6DBC2A/I GWH12QD-S6DBC2A/I Product Code CB439N14900 CB439N14800 Decorative Strip Front Panel 20000300070S 20000300070S Display Board 30565278 30565278 Filter Sub-Assy 1112208906 1112208906 Decorative Board (Left) 20192662 20192662 Front Case 2002248401 2002248401 Guide Louver 1051276501 1051276501 Axile Bush...
  • Page 84 Service Manual Part Code Description GWH09QD-S6DBD2A/I GWH09QD-S6DBE4A/I Product Code CB461N06100 CB470N05000 Decorative Strip Front Panel 200003000008 200003000064T Display Board 30565278 300001000081 Filter Sub-Assy 1112208906 1112208906 Decorative Board (Left) 20192662 20192662 Front Case 2002248401 2002248401 Guide Louver 1051276501 1051276501 Axile Bush 10542036 10542036 Air Louver 1...
  • Page 85 Service Manual Part Code Description GWH09QD-S6DBE6A/I GWH12QD-S6DBD2A/I Product Code CB465N03300 CB461N06200 Decorative Strip 23000100001801 Front Panel 00000300009701 200003000008 Display Board 300001000036 30565278 Filter Sub-Assy 1112208906 1112208906 Decorative Board (Left) 20192662 20192662 Front Case 2002248401 2002248401 Guide Louver 1051276501 1051276501 Axile Bush 10542036 10542036 Air Louver 1...
  • Page 86 Service Manual Part Code Description GWH12QD-S6DBE4A/I GWH12QD-S6DBE6A/I Product Code CB470N05100 CB465N03400 Decorative Strip 23000100001801 Front Panel 200003000064T 200003000042S Display Board 300001000081 300001000036 Filter Sub-Assy 1112208906 1112208906 Decorative Board (Left) 20192662 20192662 Front Case 2002248401 2002248401 Guide Louver 1051276501 1051276501 Axile Bush 10542036 10542036 Air Louver 1...
  • Page 87 Service Manual Part Code Description GWH09QD-S6DBD6A/I GWH12QD-S6DBD6A/I Product Code CB460N07000 CB460N06900 Decorative Strip Front Panel 200003000027S 200003000027S Display Board 300001000042 300001000042 Filter Sub-Assy 1112208906 1112208906 Decorative Board (Left) 20192662 20192662 Front Case 2002248401 2002248401 Guide Louver 1051276501 1051276501 Axile Bush 10542036 10542036 Air Louver 1...
  • Page 88 Service Manual The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 89 Service Manual Part Code Description GWH18QE-S6DBD2B/I GWH18QE-S6DBE4B/I Product Code CB461N05900 CB470N05200 Front Panel Assy 00000300234 200003000062T Filter Sub-Assy 1101200703 1101200703 Screw Cover 2425245301 2425245301 Front Case Assy 00000200043 00000200043 Swing Lever 10512743 10512743 Air Louver 1 10512741 10512741 Helicoid Tongue sub-assy 26112384 26112384 Left Axile Bush...
  • Page 90 Service Manual Part Code Description GWH18QE-S6DBE6B/I GWH24QE-S6DBD2A/I Product Code CB465N03600 CB461N06000 Front Panel Assy 00000300007801 00000300234 Filter Sub-Assy 1101200703 1101200703 Screw Cover 2425245301 2425245301 Front Case Assy 00000200043 00000200043 Swing Lever 10512743 10512743 Air Louver 1 10512741 10512741 Helicoid Tongue sub-assy 26112384 26112384 Left Axile Bush...
  • Page 91 Service Manual Part Code Description GWH24QE-S6DBE4A/I GWH24QE-S6DBE6A/I Product Code CB470N05300 CB465N03500 Front Panel Assy 200003000062T 00000300007801 Filter Sub-Assy 1101200703 1101200703 Screw Cover 2425245301 2425245301 Front Case Assy 00000200043 00000200043 Swing Lever 10512743 10512743 Air Louver 1 10512741 10512741 Helicoid Tongue sub-assy 26112384 26112384 Left Axile Bush...
  • Page 92 Service Manual Part Code Description GWH18QE-S6DBD6B/I GWH24QE-S6DBD6A/I Product Code CB460N06800 CB460N07100 Front Panel Assy 200003000023S 200003000023S Filter Sub-Assy 1101200703 1101200703 Screw Cover 2425245301 2425245301 Front Case Assy 00000200043 00000200043 Swing Lever 10512743 10512743 Air Louver 1 10512741 10512741 Helicoid Tongue sub-assy 26112384 26112384 Left Axile Bush...
  • Page 93 Service Manual 10.2 Outdoor Unit GWH09ACC-S6DBA1A/O GWH12ACC-S6DBA1A/O GWH09YD-S6DBA2A/O GWH12YD-S6DBA2A/O The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 94 Service Manual Part Code Description GWH09ACC-S6DBA1A/O GWH12ACC-S6DBA1A/O Product Code CB497W09200 CB497W10000 Front Grill 22413046 22413046 Cabinet 0153305105 0153305105 Brushless DC Motor 1501308519 1501308519 Clapboard Sub-Assy 01235094 01235094 Chassis Sub-assy 017000060317P 017000060383P Compressor and Fittings 00900100022901 00900100022901 Valve Support Sub-Assy 01710400005P 01710400005P Cut-off valve 1/4(N) 07130239...
  • Page 95 Service Manual Part Code Description GWH09YD-S6DBA2A/O GWH12YD-S6DBA2A/O Product Code CB466W00109 CB466W00208 Front Grill 22413046 22413046 Cabinet 01433034P 01433034P Brushless DC Motor 1501308519 1501308519 Clapboard Sub-Assy 01235094 01235094 Chassis Sub-assy 017000060383P 017000060383P Compressor and Fittings 00900100022901 00900100022901 Valve Support Sub-Assy 01710400005P 01710400005P Cut-off valve 1/4(N) 07130239...
  • Page 96 Service Manual GWH18ACE-S6DBA1A/O GWH24YE-S6DBA2A/O The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 97 Service Manual Part Code Description GWH24YE-S6DBA2A/O GWH18ACE-S6DBA1A/O Product Code CB466W00300 CB497W11000 Front Grill 22415011 22415011 Fan Motor 15010400000106 15010400000102 Electric Box (Fireproofing) 20115003 20115003 Radiator 4901521501 4901521501 Main Board 300027000308 300027060855 Electric Box Assy 100002000609 100002066754 Terminal Board Support sub-assy 01715016 01715016A Terminal Board...
  • Page 98 Service Manual 11. Removal Procedure 11.1 Removal Procedure of Indoor Unit Caution: discharge the refrigerant completely before removal. Step Procedure Front panel the groove on the front panel. Front case respectively. Groove 2. Remove horizontal louver Push out the axile bush on horizontal louver.
  • Page 99 Service Manual Step Procedure Electric box cover 2 4. Remove electric box cover 2 and detecting plate(WIFI) Screw Remove the screws on the electric box cover 2 and detecting plate(WIFI) to remove the electric box cover 2 and detecting plate(WIFI). Screws Detecting plate (WIFI)
  • Page 100 Service Manual Step Procedure 7. Remove electric box assy Screw Loosen the connection clasps between shield cover of electric box sub-assy and Clasps electric box, and then remove the shield cover of electric box sub-assy. Electric box Shield cover of electric box sub-assy Indoor tube temperature...
  • Page 101 Service Manual Step Procedure Instruction: Some wiring terminal of this product is with lock catch and other devices. circlip The pulling method is as below: holder 1.Remove the soft sheath for some terminals terminals. connector soft sheath 2.Pull out the holder for some terminals at terminal), hold the connector and then pull the terminal.
  • Page 102 Service Manual Step Procedure Remove the screws fixing motor clamp Screws and then remove the motor clamp. Motor clamp Remove the screws at the connection Screw Motor place of cross flow blade and motor; lift Holder the motor and cross flow blade upwards sub-assy to remove them.
  • Page 103 Service Manual QD/QE Front panel Open the front panel. Push the left and thegroove on the front case. Then remove Left filter Front Right filter Groove case 2.Remove horizontal louver Push out the axile bush on horizontal louver, Bend the horizontal louver with hand and then separate the horizontal louver from the crank shaft of step motor to remove it.
  • Page 104 Service Manual 4.Remove electric box cover 2 and detecting plate(WIFI) Electric box cover 2 Screw Remove the screw on the electric box cover 2 and detecting plate(WIFI) to remove the electric box cover 2 and detecting plate(WIFI). Screws Detecting plate (WIFI) 5.Remove front case sub-assy Note:...
  • Page 105 Service Manual Step Procedure 7.Remove vertical louver Loosen the connection clasps between vertical louver and bottom case to remove vertion louver. Swing motor Screw off the screws that are locking the swing motor and take the motor off. 8.Remove electric box assy Loosen the connection clasps between shield cover of electric box sub-assy and electric box,and then remove the shield...
  • Page 106 Service Manual Step Procedure Rotate the electric box assy. Twist offthe Screws screwsthat are locking the wire clip and loosen the power cord. Remove the wiring Power terminal of power cord. Lift up the main board and take it off. Instruction:Some wiring terminal of this Wire clip products is with lock catch and other...
  • Page 107 Service Manual Step Procedure Adjust the position of conncetion pipe on evaporator up wards to remove it. then remove the motor clamp. Remove the screws at the connection remove them. Remove the bearing holder sub-assy. then remove the step motor. Installation and Maintenance...
  • Page 108 Service Manual 11.2 Removal Procedure of Outdoor Unit 09/12K 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 and valve cover Twist off the screws used for fixing the handle and valve cover, pull the handle and valve cover up ward to remove it.
  • Page 109 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 cross fan blade Remove the screw nut fixing cross fan blade, remove the gasket and spring cushion, to remove the cross fan blade.
  • Page 110 Service Manual 6. Remove motor Remove the four tapping screws fixing motor, pull out the contact tag of motor wiring, to remove the motor. motor 7. Remove motor support Remove the two tapping screws fixing motor support and chassis, lift to remove the motor support. motor suppor 8.
  • Page 111 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 four-way valve assy four-way valve ass lding cut the spot weld of four-way valve assy, compressor air suction/discharging valve and...
  • Page 112 Service Manual 12. Remove compressor compressor Remove the three feet screw nuts fixing compresso to remove the compressor. 13. 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.
  • Page 113 Service Manual 18/24K Steps Procedure 1.Remove handle Twist off the screws used for fixing the handle and v alve cover , pull the handle and v alve cover up ward to remove it. handle valve cover 2.Remove top panel top panel Remove the screws connecting the top panel with the front panel and left&right side plate, and then remove the top panel.
  • Page 114 Service Manual Steps Procedure Remove grille and panel Twist off the screws connecting the grille and panel, and then remove the grille. Twist off the screws connecting the panel, chassis and motor support with screwd-river, and then remove the panel. grille panel Remove axial flow blade...
  • Page 115 Service Manual Steps Procedure Remove motor support motor support Twist off the tapping screws fixingthe motor support, pull it upwardsand then remove the motor support. right plate board Remove the scre ws thgir eht gnitcennoc side plate with the chassis, the valve support and the electric box, and then yssa etalp edis thgir eht evome.
  • Page 116 Service Manual Steps Procedure 9.Remove4-wayvalve assy Discharge the refrigerant completely;unsolder the pipelines connecting the compressor andthe condenser assy,and then remove the 4-way valve assy. 4-way valve assy Remove electronic Expansion Valve Unsolder the spot weld of discharge and inhalation tube sub-assy, electronic expansion Valve,compressor and condenser, and then remove the discharge and inhalation tube sub-assy and electronic expansion valve...
  • Page 117 Service Manual Steps Procedure 12.Remove compressor compressor Twist off the 3 foot nuts on compressor and then remove the compressor. Installation and Maintenance...
  • Page 118 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 119 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 120 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 121 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 122 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 123 Add: West Jinji Rd, Qianshan, Zhuhai,Guangdong, China, 519070 Tel: (+86-756) 8522218 Fax: (+86-756) 8669426 E-mail: gree@gree.com.cn 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 For product improvement, specifications and appearance in this manual are subject to change without prior notice.

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