Service Manual Table of Contents Part Ⅰ : Technical Information ................. 1 1. Summary ........................1 2. Specifications ......................3 2.1 Specification Sheet ......................3 2.2 Operation Characteristic Curve ..................9 2.3 Capacity Variation Ratio According to Temperature ............9 2.4 Cooling and Heating Data Sheet in Rated Frequency .............
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Service Manual 9. Maintenance ......................... 34 9.1 Flashing LED of Indoor/Outdoor Unit and Primary Judgement ........... 34 9.2 Procedure of Troubleshooting ..................... 40 9.3 Maintenance Method for Normal Malfunction ..............55 10. Exploded View and Parts List ..............57 10.1 Indoor Unit ......................... 57 10.2 Outdoor Unit ........................
Service Manual 2.4 Cooling and Heating Data Sheet in Rated Frequency Cooling: Pressure of gas pipe Inlet and outlet pipe Rated cooling Fan speed Fan speed connecting indoor temperature of heat Compressor condition(°C) (DB/WB) Model of indoor of outdoor and outdoor unit exchanger revolution (rps) unit...
Service Manual 4. Refrigerant System Diagram Indoor unit Outdoor unit Gas pipe side Valve 4-Way valve Di s charge Heat Accumlator Suction exchanger Compressor (evaporator) Heat exchanger Liquid pipe (condenser) side Valve Strainer Electron Capillary Strainer expansion valve COOLING HEATING Connection pipe specification: Liquid pipe:1/4"...
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. ●...
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Service Manual ● Outdoor Unit (1)GWH09KF-K3DNA6G/O(CB146W36201), GWH12KF-K3DNA6G/O(CB146W36101) 6361000008402 (2)GWH09KF-K3DNA6G/O(CB146W36200), GWH12KF-K3DNA6G/O(CB146W36100) 6361000008403 These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit. Technical Information...
Service Manual 5.2 PCB Printed Diagram Indoor Unit ●TOP VIEW Name Interface of live wire Interface of live wire for health function Interface of neutral wire Interface of neutral wire for health function Interface of neutral wire and live wire communication Control interface of PG motor Feedback interface of...
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Service Manual Outdoor Unit ●TOP VIEW Name Compressor Reactor 2 Reactor 1 Chassis electric heating Compressor electric heating 4-way valve DC fan Earthing wire Communication wire Neutral wire Live wire Electronic expansion valve Temperature sensor Overloard ●BOTTOM VIEW Technical Information...
Service Manual 6. Function and Control 6.1 Remote Controller Introduction Buttons on remote controller ON/OFF Button AUTO HEALTH X-FAN MODE Button HUMIDITY FILTER +/- Button TURBO HOUR FAN Button ON/OFF Button Button ON/OFF MODE HEALTH SAVE Button X-FAN Button TEMP Button TIMER Button X-FAN TEMP...
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Service Manual 1.ON/OFF button Press this button can turn on or turn off the air conditioner. After turning on the unit,operation indicator " " on indoor unit is ON (green indicator. Color may be differ-ent for different models)and indoor unit gives out a sound. 2.MODE button Press this button can select your required operation mode.
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Service Manual If the unit is turned off during swing operation,the louver will stop at present position. When selecting " " with remote controller, it is the fixed position swing. Horizontal louver of air conditioner will stop at that position as shown by the icon to swing. When selecting "( )"...
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Service Manual Function introduction for combination buttons Child lock function Press "+" and "-" buttons simultaneously can turn on or turn off child lock function. When child lock function is started up, " " icon will be displayed on remote controller. If operate remote controller " " icon will flash three times, while remote controller won’t send signal. Switchover function for temperature display After turning off the unit by remote controller, press "-"...
Service Manual 6.2 Brief Description of Modes and Functions 1.Temperature Parameters ●Indoor preset temperature (Tpreset) ●Indoor ambient temperature (Tamb.) 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;...
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Service Manual 1.In the case of Tindoor amb. <24°C: if T≤tube40°C and the indoor fan is at stop state, the indoor fan will begin to run at low speed with a time lag of 2 minutes. Within 2 minutes, if Ttube>40°C, the indoor fan also will run at low speed; and after1-minute operation at low speed, the indoor fan will be converted tooperation at preset speed.
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Service Manual 3. Other Controls (1) ON/OFF Press the remote button ON/OFF: the on-off state will be changed once each time you press the button. (2) Mode Selection Press the remote button MODE, then select and show in the following ways: AUTO, COOL, DRY, FAN, HEAT, AUTO. (3) Temperature Setting Option Button Each time you press the remote button TEMP+ or TEMP-, the setting temperature will be up or down by 1°C.
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Service Manual inner fan is running. The indoor fan and compressor may get the power when air deflector is on the default location. (10) Display(NOTE:Nixie tube is not available for A8 panel.) ① Operation pattern and mode pattern display All the display patterns will display for a time when the power on, the operation indication pattern will display in red under standby status.
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.
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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.
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...
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 wall-mounting Install the support of outdoor unit (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor Fix outdoor unit...
Service Manual 8.2 Installation Parts-checking 8.4 Electric Connection Requirement Name Name 1. Safety Precaution Indoor unit Sealing gum (1) Must follow the electric safety regulations when installing Outdoor unit Wrapping tape the unit. Support of outdoor (2) According to the local safety regulations, use qualified Connection pipe unit power supply circuit and air switch.
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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.
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Service Manual 7. Connect Wire of Indoor Unit 8. Bind up Pipe (1) Open the panel, remove the screw on the wiring cover and (1) Bind up the connection pipe, power cord and drain hose then take down the cover.(As show in Fig.11) with the band.(As show in Fig.14) (2) Reserve a certain length of drain hose and power cord Panel...
Service Manual 8.6 Installation of Outdoor Unit Refer to the following table for wrench moment of force: Tightening torque(N . m) 1. Fix the Support of Outdoor Unit(Select it according to Hex nut diameter(mm) the actual installation situation) Φ6 15~20 Φ9.52 30~40 (1) Select installation location according to the house structure.
Service Manual 8.8 Check after Installation and Test Operation The drain hose can't be fluctuant 1. Check after Installation Check according to the following requirement after finishing The water outlet installation. can't be placed in water The drain hose Items to be checked Possible malfunction can't be fluctuant The water...
Service Manual 9. Maintenance 9.1 Flashing LED of Indoor/Outdoor Unit and Primary Judgement Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes...
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Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
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Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
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Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
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Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
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Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
Service Manual 9.2 Procedure of Troubleshooting (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? ●...
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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? ●...
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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...
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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...
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Service Manual Communication Malfunction Troubleshooting for E6 malfunction Disconnect power and check if the connection wire of indoor and outdoor units and the built-in wire of electric box are correctly connected. Connect the wire properly according Is malfunction Correct connection? to the wiring eliminated? diagram.
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Service Manual Outdoot 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...
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Service Manual (2) IPM Protection, Out-of-step Fault, Compressor Phase Overcurrent (AP1 below refers to the outdoor control panel) Main check points: ●Is the connection between control panel AP1 and compressor COMP secure? Loose? Is the connection in correct order? ●Is the voltage input of the machine within normal range? (Use AC voltmeter to measure the voltage between terminal L and N on the wiring board XT) ●Is the compressor coil resistance normal? Is the insulation of compressor coil against the copper tube in good condition? ●Is the working load of the machine too high? Is the radiation good?
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Service Manual Energize and switch on Use AC voltmeter If the voltage Check the supply to measure the IPM protection between terminal L voltage and voltage between occurs after the and N on wiring machine has run for terminal L and N restore it to board XT is within a period of time?
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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...
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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?
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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.
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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...
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Service Manual (7) Power factor correct or (PFC) fault (a fault of outdoor unit) (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: ●Check if the reactor (L) of the outdoor unit and the PFC capacitor are broken Fault diagnosis process: Start Check wiring of the...
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Service Manual (8) 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...
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Service Manual (9) 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 of the rated voltage on the nameplate...
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.
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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...
Service Manual 11. Removal Procedure Caution: discharge the refrigerant completely before removal. 11.1 Removal Procedure of Indoor Unit Steps Procedure Points 1. External features If ON/OFF button is kept pushing for 5 seconds, aforced cooling op- eration willbe carried out for approx.
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Service Manual Steps Procedure Points Support the front panel by one 3. Remove panel hand, while remove the rotation Pull down horizontal blade axis at the upper center by the by pulling forward. other hand. And pull out the front panel forward to remove.
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Service Manual Steps Procedure Points 4. Remove electric box cover screws Remove a electric box cover mounting screw. Open electric box cover upward. electric box cover A switch for field setting is not provided in particular. screws 5. Remove front case Remove the 3 screws, in the right and the left, Screw stoppers inside the...
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Service Manual Steps Procedure Points 6. Remove the vertical blade Hooks Unfasten the hooks at the upper 2 positions. A set of vertical blade has 6 fins as on ASSY. (It is impossible to replace only one fin.) The set of vertical blades is not marked for difference between right and left.
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Service Manual Steps Procedure Points 7. Remove electrical box Disconnect the c able clamp Pay attention to the direction of the retainer of the thermistor so that the retainer will not touch the harness (same as the existing models.) Terminal board Disconnect the connection wires.
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Service Manual Steps Procedure Points Remove fan motor Signal fan motor Signal Wire Wire Remove a screw on the electrical box. Bottom frame Pull up the electrical box forward to remove. Hook Installation and Maintenance...
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Service Manual Steps Procedure Points 8. Remove the shield plate and control PCB Hooks Unfasten the hooks at the upper 2 positions of the shield plate. Remove the electrical box according to the “Removal of Electrical Box”. shield plate (1) Unfasten the hook at the lower position, and remove the shield plate...
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Service Manual Steps Procedure Points Take off wiring terminal Display PCB ASSY Remove display PCB sub-Assy. Remove swing motor. Swing motor Installation and Maintenance...
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Service Manual Steps Procedure Points The control PCB is To remove the control integrated with the power PCB, unfasten the 2 hooks at the upper part supply PCB. from the rear side. Lift up the upper part of the control PCB, and remove it.
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Service Manual Steps Procedure Points 9. Remove the refrigerant piping CAUTION If gas leaks, repair the spot of Lift the indoor unit by a leaking, then collect all wooden base. refrigerant from the unit. After conducting vacuum drying, recharge proper amount of refrigerant.
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Service Manual Steps Procedure Points 10. Remove evaporator assy When the pipings are disconnected, protect the Remove the indoor unit both openings from entering from the installation moisture. plate. Liquid piping Gas piping Auxiliary piping Piping fixture Release the hook of the piping fixture on the back of the unit.
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Service Manual Steps Procedure Points Loosen the 2 screws, in the right and the left, which fix the evaporator assy. Screws Auxiliary piping Widen the auxiliary piping to the extent of 10°~20°. evaporator Pull the evaporator assy to the front side to undo the hooks completely, and then lift it.
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Service Manual Steps Procedure Points 11. Remove cross flow fan and fan Cross flow fan motor Remove cross flow fan and Fan motor fan motor. Bearing Remove the rubber cushion of the bearing. Remove the screws at the joint of the cross flow blade and the motor.
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Service Manual Steps Procedure Points Take down the motor sub-assy. Remove fan motor. Installation and Maintenance...
Service Manual 11.2 Removal Procedure of Outdoor Unit Warning: Be sure to wait for a minimum of 20 minutes after turning off all power supplies and discharge the refrigerant completely before removal. Steps Procedure 1.Remove big handle Before disassamble. Remove 1 connection screw fixing big handleand then removethe big handle.
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Service Manual Steps Procedure 3.Remove grille and front panel Remove connection screws between the front grille and the front panel. Then remove the front grille. Remove connection screws connecting the front panel with the chassis and the motor support, and then remove the front panel.
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Service Manual Steps Procedure 6.Remove electric box assy Electric box assy Remove the 2 screws fixing the cover of elec- tric box. Lift to remove the cover. Loosen the wire and disconnect the terminal. Lift to re- move the electric box assy. 7.Remove 4-way valve assy Unscrew the fastening nut of the 4-way Valve 4-way Valve Assy...
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Service Manual Steps Procedure 9.Remove motor and motor support Motor support Remove the 4 tapping screws fixing the motor. Pull out the lead-out wire and remove the Motor motor. Remove the 2 tapping screws fixing the motor support. Lift motor support to re- move it.
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Service Manual Steps Procedure 11.Remove Compressor Remove the 2 screws fixing the gas valve. Unsolder the welding spot connecting gas valve and air return pipe and remove the gas valve. (Note: it is necessary to warp the gas valve when unsoldering the welding spot.) Remove the 2 Liquid valve screws fixing liquid valve.
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 60.8 69/70 69.8 78/79 78.8 62/63...
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. ●...
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...
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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...
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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...
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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...