Related Manuals for Gree GWH12UB-K3DNA4F
Summary of Contents for Gree GWH12UB-K3DNA4F
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Page 1: Service Manual
Change for Life Service Manual Models: GWH09UB-K3DNA4F GWH12UB-K3DNA4F GWH18UC-K3DNA4F (Refrigerant R410A) GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI... -
Page 2: Table Of Contents
Service Manual Table of Contents Part Ⅰ : Technical Information ...............1 1. Summary ........................1 2. Specifications ......................2 2.1 Specification Sheet ......................2 2.2 Operation Characteristic Curve ..................8 2.3 Capacity Variation Ratio According to Temperature ............9 2.4 Cooling and Heating Data Sheet in Rated Frequency ...........10 2.5 Noise Curve ........................10 3. - Page 3 Service Manual 9. Maintenance ......................49 9.1 Error Code List .......................49 9.2 Procedure of Troubleshooting ..................56 9.3 Troubleshooting for Normal Malfunction .................80 10. Exploded View and Parts List ..............82 10.1 Indoor Unit ........................82 10.2 Outdoor Unit .........................86 11. Removal Procedure ..................90 11.1 Removal Procedure of Indoor Unit ................90 11.2 Removal Procedure of Outdoor Unit ................99 Appendix:...
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Page 4: Part Ⅰ : Technical Information
Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit: GWH09UB-K3DNA4F/I(Cold Plasma) GWH12UB-K3DNA4F/I(Cold Plasma) GWH18UC-K3DNA4F/I(Cold Plasma) Outdoor Unit: GWH09UB-K3DNA4F/O GWH12UB-K3DNA4F/O GWH18UC-K3DNA4F/O Remote Controller: SAA1FB1 Technical Information... -
Page 5: Specifications
Service Manual 2. Specifications 2.1 Specification Sheet Parameter Unit Value Model GWH09UB-K3DNA4F Product Code CB264000600 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity 2600 Heating Capacity 3000 Cooling Power Input Heating Power Input Cooling Power Current Heating Power Current Rated Input 1630... - Page 6 Service Manual Model GWH09UB-K3DNA4F/O Product Code CB264W00600 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD. Compressor Model QXAT-B121zE070 Compressor Oil FV50S Compressor Type Rotary L.R.A. Compressor RLA Compressor Power Input 1430 Overload Protector 1NT11L-6233 Throttling Method Electron expansion valve Operation temp °C 16~30 Ambient temp (cooling) °C...
- Page 7 Rated Current Air Flow Volume (SH/H/MH/M/ML/L/SL) 720/550/490/420/370/320/290 Dehumidifying Volume 3.80 3.71 SEER SCOP Application Area 16-24 Model GWH12UB-K3DNA4F/I(Cold Plasma) Product Code CB264N00700 Fan Type Cross-flow Diameter Length(DXL) Ф92X616 Fan Motor Cooling Speed (SH/H/MH/M/ML/L/SL/Q) r/min 1400/1185/1053/920/829/741/650/550 Fan Motor Heating Speed (SH/H/MH/M/ML/L/SL/Q)
- Page 8 Service Manual Model GWH12UB-K3DNA4F/O Product Code CB264W00700 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD. Compressor Model QXAT-B121zE070 Compressor Oil FV50S Compressor Type Rotary L.R.A. Compressor RLA Compressor Power Input 1430 Overload Protector 1NT11L-6233 Throttling Method Electron expansion valve Operation temp °C...
- Page 9 Service Manual Parameter Unit Value Model GWH18UC-K3DNA4F Product Code CB264000500 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity 5275 Heating Capacity 5275 Cooling Power Input 1600 Heating Power Input 1420 Cooling Power Current Heating Power Current Rated Input 2400 Rated Current...
- Page 10 Service Manual Model GWH18UC-K3DNA4F/O Product Code CB264W00500 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD. Compressor Model QXAT-B121zF070 Compressor Oil 68EP Compressor Type Rotary L.R.A. Compressor RLA Compressor Power Input 1430 Overload Protector 1NT11L-6233 Throttling Method Electron expansion valve Operation temp °C 16~30 Ambient temp (cooling) °C...
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Page 11: Operation Characteristic Curve
Service Manual 2.2 Operation Characteristic Curve 09K/12K Cooling Cooling Heating Heating Condition Condition Indoor:DB 20°C Indoor:DB 27°C WB19°C Indoor air flow:Turbo Indoor air flow: Turbo Pipe length:5m Pipe length:5m Voltage:230V Voltage:230V Compressor Speed(rps) Compressor Speed(rps) n i l Cooling Heating Cooling Heating Conditions... -
Page 12: Capacity Variation Ratio According To Temperature
Service Manual 2.3 Capacity Variation Ratio According to Temperature 09K/12K Cooling Heating Cooling Heating Conditions Conditions Indoor:DB20°C Indoor:DB27°C/WB19°C Indoor air flow:Super High Indoor air flow:Super High Pipe length: 5m Pipe length: 5m 48 50 52 32 34 36 38 40 42 44 46 Outdoor temp.(°C) Outdoor temp.(°C) Cooling... -
Page 13: Cooling And Heating Data Sheet In Rated Frequency
Service Manual 2.4 Cooling and Heating Data Sheet in Rated Frequency Cooling: Pressure of gas pipe Inlet and outlet pipe Rated cooling Compressor connecting indoor temperature of heat Fan speed of Fan speed of condition(°C) (DB/WB) Model revolution and outdoor unit exchanger indoor unit outdoor unit... -
Page 14: Outline Dimension Diagram
Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 09K/12K Φ55 Φ55 Φ55 Φ55 Unit:mm 49.5 Model Technical Information... -
Page 15: Outdoor Unit
Service Manual 3.2 Outdoor Unit 09K/12K Unit:mm Unit:mm Technical Information... -
Page 16: 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 : 1/4"... -
Page 17: Electrical Part
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. ● Indoor Unit GWH09UB-K3DNA4F/I(Cold Plasma), GWH12UB-K3DNA4F/I(Cold Plasma) Technical Information... - Page 18 Service Manual GWH18UC-K3DNA4F/I(Cold Plasma) ● Outdoor Unit GWH09UB-K3DNA4F/O, GWH12UB-K3DNA4F/O N(1) Technical Information...
- Page 19 Service Manual GWH18UC-K3DNA4F/O These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit. Technical Information...
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Page 20: Pcb Printed Diagram
Service Manual 5.2 PCB Printed Diagram Indoor Unit 09K/12K ● Top view Interface of live wire Interface of neutral wire Tube temperature sensor Up&down swing 2 for outdoor unit Interface of jumper Interface of fuse Ambient temperature sensor Up&down swing 1 Communication interface for Interface of live wire Indoor fan motor... - Page 21 Service Manual ● Top view 10 11 Interface of live wire for Interface of left&right Interface of neutral wire Up&down swing 3 outdoor unit swing Interface of communication Health interface wire for neutral wire and live Tube temperature sensor Up&down swing 2 wire Ambient temperature Interface of fuse...
- Page 22 Service Manual Outdoor Unit 09K/12K ● Top view 14 15 ● Bottom view Technical Information...
- Page 23 Service Manual ● Top view Terminal of compressor wire Terminal of low pressure protection Terminal of compressor overload protection Te r m i n a l o f o u t d o o r temperature sensor Terminal of outdoor fan Terminal of 4-way valve Communication wire with indoor unit...
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Page 24: Function And Control
Service Manual 6. Function and Control 6.1 Remote Controller Introduction Specialties note Matching instructions This model adopts RF remote control. The remote controller shall be matched with the air conditioner before operation, otherwise the remote control will be invalid. Before operation, please read the instructions in this page carefully and then do the corresponding matching operation. -
Page 25: Introduction For Icons On Display Screen
Service Manual Introduction for Icons on Display Screen Set fan speed Operation mode Send signal battery power Auto mode humidity functions WIFI Cool mode INTELLIGENT Temp.display type Healthy mode Dry mode Set temperature Fan mode Heat mode Up & down swing Set time Left &... - Page 26 Service Manual button Under simple swing mode, press this button can turn on (display " " icon ) or turn off ( not display " " icon) left&right swing function. Under OFF status, press "+" button and " " button simultaneously can switch between simple swing mode and fixed swing mode. During switching time, “...
- Page 27 Service Manual Note: ● Under on and off status, you can set T-OFF or T-ON simultaneously. ● Before setting T-ON or T-OFF, please adjust the clock time. ● After starting up T-ON or T-OFF, set the constant circulating valid. After that, air conditioner will be turned on or turned off according to setting time.
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Page 28: Operation Guide
Service Manual ●Sleep 3 - the sleep curve inquiry under DIY Sleep mode: User can inquire the set sleep curve according to the setting method of sleep curve. Enter the setting of personalized sleep but do not change the temperature. Then press "AIR" button to confirm the setting. Note: In the above setting or inquiry procedure, if there is no button pressing within 10s, remote controller will automatically exit the sleep curve setting and resume the original display. -
Page 29: Operation Of Smart Control (Smart Phone, Tablet Pc)
3 seconds. If WiFi icon is shown, it means the WiFi function is turned on. 3. Enter the WiFi setting of your phone and search for the wireless network named gree-xxxxxxxx. Take gree-E9D1 as an example. Connect the network. - Page 30 Meanwhile, the software will turn back to interface of “Air-Conditioner” and the AC list will be gone. 8. Exit the application and enter your phone’s WiFi Setting. Then you will see the network you just named “gree-my home". Click it and input the password set in step 6 to join the network.
- Page 31 Service Manual 9. Enter into the software interface again. Meanwhile, the short-distance remote control setting for your air conditioner is fin ished. How to reset the AC WiFi module: Turn unit off with the remote controller and disconnect the power of AC. Then re-connect the power. 1 minute later, press “WiFi” and “Mode”...
- Page 32 Service Manual Key Functions Instruction of Application Software 1. Preset: It’s with Timer On and Timer Off function. User can set Timer On and Timer Off according to actual individual requirement. 2.Functions: After entering setting interface, you can turn on or turn off Light, Purify, X-fan and Turbo functions and set Silent, Humidify, Air exchange and other modes.
- Page 33 Service Manual ●Regional Swing: After entering Regional Swing, user can set it according to the room size. Press “Air flow position” button and the user can adjust the fan-blowing area through moving the icon of air conditioner left and right according to the actual installation position of the unit.
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Page 34: Brief Description Of Modes And Functions
Service Manual 6.3 Brief Description of Modes and Functions Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Indoor unit 1.This controller includes functions as below (1) Auto; (2) Cooling; (3) Dry; (4) Fan; (5) Heating 2.Control object of controller (1)Indoor unit : Cooling mode: seven kinds of fan speed in total (including quiet, fan 1, fan 2, fan 3, fan 4, fan 5, turbo). - Page 35 Service Manual Display table for error status Error name Error definition Dual-8 code display Freon recovery mode Operation status is displayed immediately Malfunction of indoor fan Malfunction of hardware Malfunction of middle temperature sensor of indoor evaporator Malfunction of hardware Malfunction of indoor ambient temperature sensor Malfunction of hardware Communication malfunction between indoor unit and outdoor unit...
- Page 36 Service Manual 5.Other control (1)Timer function Timer ON: Timer ON can be set under off status. After time is over, the unit will operate at original setting mode. The timer interval is 0.5h and the timer setting range is 05~24h. Timer OFF: Timer OFF can be set under on status.
- Page 37 Service Manual of swing blade, there are upper swing and lower swing. When selecting fixed-angle swing, you can select 5 kinds of swing position for blowing fan; After selecting free swing, lower swing for heating mode and upper swing for cooling mode. Horizontal louver postion diagrammatic sketch Initial stauts after reset is finished Lower swing...
- Page 38 Service Manual (5)Error 5: Dual-8 nixie tube of display board displays “H6”. Solution: The feedback wire of indoor fan has not been firmly connected to the controller or the indoor fan motor fails to work, please reinsert the feedback line of indoor fan or replace the main board of controller, or replace the motor. (6)Error 6: Dul-8 nixie tube of display board displays “FC”.
- Page 39 Service Manual Outdoor unit 09K/12K 1. System function 1.1 Cooling mode 1.1.1 Working condition and process for cooling When the compressor is at off status, turn on the unit under cooling mode. When indoor unit reaches the condition of turning on the unit, the unit operates under cooling mode.Meanwhile, indoor fan, outdoor fan and compressor stops operation.
- Page 40 Service Manual 2.2 Delay protection of compressor When compressor is stopped, it needs 3min to restart up the compressor. Once compressor is started up, compressor won’t stop operate within 6in according to the change of temperature. 2.3 Discharge temperature protection of compressor (1)When TBdischarge B≥98℃...
- Page 41 Service Manual 1. Compensation function of input parameters According to the structure of wall-mounting unit, considering the comfortability for operation, indoor ambient temperature when the compressor is at OFF status is higher than set temperature under heating mode. 2. Control of detecting the availability of parameters For ensuring the safety and reliability of operation, please insert the outdoor discharge temperature sensor into the corresponding temperature sensor bushing to make sure that the control system can detect system discharge temperature accurately.
- Page 42 Service Manual 11.2 Under cooling or drying mode, if T <6, the operation frequency of compressor may increase or decrease; inner tube 11.2.1 If the unit is stopped because of freeze protection for 6 times successively, it can’t resume operation automatically and the malfunction will be displayed continuously, which can only be resumed by pressing ON/OFF button.
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Page 43: 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 44 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.
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Page 45: Installation
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 46: 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 47: Installation Parts-Checking
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. - Page 48 Service Manual (3) Fix the wall-mounting frame on the wall with tapping screws 5. Connect the Pipe of Indoor Unit (ST4.2X25TA) and then check if the frame is firmly installed by (1) Aim the pipe joint at the corresponding bellmouth.(As show pulling the frame.
- Page 49 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...
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Page 50: Installation Of Outdoor Unit
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. -
Page 51: Vacuum Pumping And Leak Detection
Service Manual (3) The water outlet can't be placed in water in order to drain 8.8 Check after Installation and Test smoothly.(As show in Fig.27) Operation 1. Check after Installation Check according to the following requirement after finishing installation. The drain hose can't be fluctuant Items to be checked Possible malfunction Has the unit been... -
Page 52: Maintenance
Service Manual 9. Maintenance 9.1 Error Code List 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) - Page 53 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...
- Page 54 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...
- Page 55 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...
- Page 56 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...
- Page 57 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...
- Page 58 Service Manual Display Method of Indoor Unit Display Method of Outdoor Unit Indicator Display (during Indicator has 3 kinds of display blinking, ON 0.5s and OFF status and during blinking, ON Malfunction Dual-8 A/C status Possible Causes 0.5s) 0.5s and OFF 0.5s Code Name Operation...
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Page 59: Procedure Of Troubleshooting
Service Manual 9.2 Procedure of Troubleshooting Indoor Unit 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 60: Installation And Maintenance
Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 Start Turn the fan blades by hand under power-off condition Adjust the motor and blade Whether the fan blades assembly so that rotor can run can run smoothly? smoothly. - Page 61 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 62 Service Manual 4. 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 63 Service Manual Outdoor Unit 09K/12K 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 64 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 65 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 66 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 67 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 68 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 69 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 70 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 71 Service Manual 1. Key detection point Test9 Test3 Test4 Test2 Test1 Test5 Test8 Tset7 Test6 Test10 Test11 Test12 Test value under normal Test NO Test point Corresponding component condition Test 1 Between A and C Neutral and live wires 160V~265V Test 2 Between B and C Neutral and live wires...
- Page 72 Service Manual 2. Capacity charging malfunction (outdoor unit malfunction) (AP1 below is control board of outdoor unit) Main detection point: ● Detect if the voltage of L and N terminal of wiring board is between 210AC-240AC by alternating voltage meter; ●...
- Page 73 Service Manual 3. IPM protection, desynchronizing malfunction, phase current of compressor is overcurrent (AP1 below is control board of outdoor unit) Main detection point: ● If control board AP1 and compressor COMP is well connected? If they are loosened? If the connection sequence is correct? ●...
- Page 74 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?
- Page 75 Service Manual 4. Diagnosis for anti-high temperature, overload protection (AP1 below is control board of outdoor unit) Main detection point: ● If the outdoor ambient temperature is in normal range; ● If the indoor and outdoor fan is running normal; ●...
- Page 76 Service Manual 5. Diagnosis for failure start up malfunction (AP1 below is control board of outdoor unit) Main detection point: ● If the compressor wiring is correct? ● If the stop time of compressor is enough? ● If the compressor is damaged? ●...
- Page 77 Service Manual 6. Diagnosis for compressor synchronism (AP1 below is control board of outdoor unit) Main detection point: ● If the system pressure is over-high? ● If the work voltage is over-low? Malfunction diagnosis process: Synchronism Synchronism after energize the unit occurred during and start it operation...
- Page 78 Service Manual 7. Diagnosis for overload and discharge malfunction (AP1 below is control board of outdoor unit) Main detection point: ● If the electron expansion valve is connected well? Is the expansion valve damaged? ● If the refrigerant is leakage? ●...
- Page 79 Service Manual 8. PFC (correction for power factor) malfunction (outdoor unit malfunction) (AP1 below is control board of outdoor unit) Main detection point: ● Check if reactor (L) of outdoor unit and PFC capacity are damaged. Malfunction diagnosis process: Start Check the connection wire of reactor (L) of...
- Page 80 Service Manual 9. Communication malfunction (AP1 below is control board of outdoor unit) Main detection point: ● Check if the connection wire and the built-in wiring of indoor and outdoor unit is connected well and no damaged; ● If the communication circuit of indoor mainboard is damaged? If the communication circuit of outdoor mainboard (AP1) is dam- aged Malfunction diagnosis process: Start...
- Page 81 Service Manual 10. Diagnosis process for outdoor communication circuit Start Test voltage value with Test 10 position in diagram with voltage meter Number jumping Test voltage value with Test 13 position in diagram with voltage meter Number jumping Outdoor unit malfunction Test voltage value with Test...
- Page 82 Service Manual 11. 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...
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Page 83: Troubleshooting For Normal Malfunction
Service Manual 9.3 Troubleshooting for Normal Malfunction 1. Air Conditioner Can't be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether it's due to power failure. If yes, No power supply, or poor After energization, operation indicator isn’t bright wait for power recovery. - Page 84 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...
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Page 85: Exploded View And Parts List
Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit GWH09UB-K3DNA4F/I(Cold Plasma) GWH12UB-K3DNA4F/I(Cold Plasma) Installation and Maintenance... - Page 86 Service Manual Part Code GWH09UB-K3DNA4F/I GWH12UB-K3DNA4F/I Description (Cold Plasma) (Cold Plasma) Product Code CB264N00600 CB264N00700 Front Panel Sub-Assy 2002264105 2002264105 Stand Bar 10582150P 10582150P Screw Cover 24252028P 24252028P Cover Plate 20122190P 20122190P Left Decorative Board 20192574D03 20192574D03 Left Side Plate...
- Page 87 Service Manual GWH18UC-K3DNA4F/I(Cold Plasma) Installation and Maintenance...
- Page 88 Service Manual Part Code Description GWH18UC-K3DNA4F/I(Cold Plasma) Product Code CB264N00500 Guide Louver 10512916 Front Panel 2002240902 Stand Bar 10582150P Left Side Plate 26112361B Left Decorative Board 20192600 Left Driving Box Sub-assy 2011220101 Decorative Strip (Up) 20192602 Cover plate(Air Outlet) 20122193P Filter Sub-Assy 11122155 Cross Flow Fan...
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Page 89: Outdoor Unit
Service Manual 10.2 Outdoor Unit GWH09UB-K3DNA4F/O GWH12UB-K3DNA4F/O Installation and Maintenance... - Page 90 Service Manual Part Code Description GWH09UB-K3DNA4F/O GWH12UB-K3DNA4F/O Product Code CB264W00600 CB264W00700 Front Grill 22413038 22413038 Cabinet 01433034P 01433034P Axial Flow Fan 10333022 10333022 Fan Motor 1501308507 1501308507 Electrical Heater (Chassis) 76510004 76510004 Chassis Sub-assy 0280311901P 0280311901P Drainage Joint 26113009 26113009...
- Page 91 Service Manual GWH18UC-K3DNA4F/O Installation and Maintenance...
- Page 92 Service Manual Part Code Description GWH18UC-K3DNA4F/O Product Code CB264W00500 Front Grill 22415010 Front Panel 01535013P Drainage Connecter 06123401 Chassis Sub-assy 01700000016P 06813401 Drainage hole Cap 76713033 76713068 Compressor and fittings 00105260 Magnet Coil 4300040078 4-Way Valve Assy 0302552701 Cut off Valve Assy 1/2 0713522001 Cut off Valve Sub-Assy 0713522301...
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Page 93: Removal Procedure
Service Manual 11. Removal Procedure Caution: discharge the refrigerant completely before removal. 11.1 Removal Procedure of Indoor Unit Steps Procedure 1. Remove filter sub-assy panel Open the panel. Remove clasps on filter. clasp Remove filter sub-assy with hand. filter sub-assy 2. - Page 94 Service Manual Steps Procedure Remove sealing cover and display. sealing cover display Remove hinges at both sides of panel to separate panel and front case and then panel remove the panel. front case 3. Remove horizontal louver and front case Cut off power, hold both ends of horizontal louver with hand, and then draw it out horizontally.
- Page 95 Service Manual Steps Procedure Remove the left end. Hold the end of connection rod with left hand, hold the horizontal louver with right hand to separate connection rod and horizontal louver. Remove the horizontal louver along the axile center direction. Note: (during operation, install the left end and then install the right end.
- Page 96 Service Manual Steps Procedure Turn over the screw cover on front case with hand, and then remove one screw inside the screw cover with screwdriver. screw screw cover wire groove butt terminal Pull out two butt terminals on electric box, and then take out connection wire of butt terminal, connection wire of inspection board and wire of temperature sensor...
- Page 97 Service Manual Steps Procedure 4. Remove electric box temperature sensor Remove three earthing screws with screws, earthing screw pull out the indoor tube temperature sensor with hand and then cut off the tileline with scissors. earthing screw Take out the electric box shielding cover sub- assy.
- Page 98 Service Manual wire groove Remove screws fixing electric box with screwdriver, and then take out the wires screw from the wire groove of electric box with hand. screw Remove screw from press plate of connection pipe with screwdriver. Remove press plate of connection pipe with hand to separate it from the bottom case.
- Page 99 Service Manual Steps Procedure Open the connection pipe of evaporator with hand. connection pipe evaporator Lift up the left end of evaporator with hand, and then take out the evaporator. 6. Remove swing blade Remove crank connection rod. crank connection rod screws Remove 2 screws fixing swing motor cover with screwdriver.
- Page 100 Service Manual Steps Procedure swing motor sub-assy Remove swing motor sub-assy. swing connection rod Take out swing connection rod to separate it from the swing blade. 7. Remove cross flow blade and motor Remove 4 screws fixing the motor press plate with screwdriver.
- Page 101 Service Manual Procedure Steps 8. Remove drive box Remove the left side cover plate of front case. cover plate screws Remove 3 screws fixing the left drive box with screwdriver. right drive box Take out right drive box. Remove 3 screws fixing left drive box with screws screwdriver.
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Page 102: Removal Procedure Of Outdoor Unit
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. 09K/12K Steps Procedure 1. 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. - Page 103 Service Manual Steps Procedure 4. Remove left side plate Remove the screws fixing left side plate and condenser support boa rd, to remove the left side plate. left side plate 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 104 Service Manual Steps Procedure 7. Remove electric box assy electric box cove r 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 8.
- Page 105 Service Manual Steps Procedure flash vaporizer assy 10. Remove flash vaporizer assy Remove the screws connecting mid-isolation board, lift to remove the flash vaporizer assy. 11. 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 106 Service Manual Steps Procedure 13. Remove compressor compressor Remove the three feet screwnuts fixing compressor, to remove the compressor. 14. 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 small valve remove the valves.
- Page 107 Service Manual Steps Procedure 1. Remove top panel 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 top panel Remove the 3 screws connecting the top panel with the front panel and the right side plate, and then remove the top panel.
- Page 108 Service Manual Steps Procedure Remove the 5 screws connecting the panel with the chassis and the motor support, and then remove the panel. Remove the 6 screws connecing the left side plate and right side plate and then remove rear grill rear grill panel 3.
- Page 109 Service Manual Steps Procedure 4. Remove fan motor axial flow blade Remove the nuts fixing the blade and then remove the axial flow blade. motor support Remove the 4 tappin g screw s fixing the motor; disconnect the leading wire insert of the motor and then remove the moto r.
- Page 110 Service Manual Steps Procedure 6.Remove soundproof sponge Since the piping ports on the soundproof sponge are torn easily, remove the soundproof sponge carefully soundproof sponge 7. Remove Isolation sheet Remove the 3 screws fixing the isolation sheet and then remove the Isolation sheet. Isolation sheet 8.
- Page 111 Service Manual Steps Procedure 9. Remov e compressor Remove the 3 foot nuts fixing the compressor and then remove the compressor. compressor 10.Remove condenser sub-assy capillary sub-assy support Remove the screws connecting the support (condenser) and condenser assy,and then remove the support(condenser). condenser sub-assy Remove the chassis sub-assy and condenser sub-assy.
- Page 112 Service Manual Steps Procedure condenser sub-assy Dissemble the chassis sub-assy and condenser sub-assy. chassis sub-assy Installation and Maintenance...
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Page 113: Appendix
Service Manual Appendix: Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit Fahrenheit Fahrenheit display Fahrenheit display Fahrenheit display Fahrenheit Celsius （℃） Celsius （℃） Celsius （℃） temperature temperature temperature （℉）... -
Page 114: 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 115: Appendix 4: List Of Resistance For Temperature Sensor
Service Manual Appendix 4: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( Resistance(k ) 138.1 18.75 3.848 1.071 128.6 17.93 3.711... - Page 116 Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( Resistance(k ) 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...
- Page 117 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor(50K) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( Resistance(k ) 853.5 18.34 4.754 799.8 93.42 17.65 4.609 89.07 16.99 4.469 703.8 84.95 16.36 4.334 660.8 81.05 15.75 4.204...
- Page 118 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 For product improvement, specifications and appearance in this manual are subject to change without prior notice.