Related Manuals for Gree GWH18YD-K6DNA1A
Summary of Contents for Gree GWH18YD-K6DNA1A
- Page 1 Change for Life Service Manual Model: GWH18YD-K6DNA1A (Refrigerant R32) GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI...
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Page 2: Table Of Contents
6. Function and Control ..................13 6.1 Remote Controller Introduction ..................13 6.2 Operation of Smart Control (Smart Phone, Tablet PC) For Gree ........18 6.3 Operation of Smart Control (Smart Phone, Tablet PC) ..........31 6.4 Brief Description of Modes and Functions ..............44 Part Ⅱ... - Page 3 Service Manual 9. Maintenance ......................65 9.1 Error Code List .......................65 9.2 Troubleshooting for Main Malfunction ................70 9.3 Troubleshooting for Normal Malfunction .................81 10. Exploded View and Parts List ..............83 10.1 Indoor Unit ........................83 10.2 Outdoor Unit .........................85 11. Removal Procedure ..................87 11.1 Removal Procedure of Indoor Unit ................87 11.2 Removal Procedure of Outdoor Unit ................92...
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Page 4: Part Ⅰ : Technical Information
Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit GWH18YD-K6DNA1A/I Outdoor Unit GWH18YD-K6DNA1A/O Remote Controller YAG1FB MODE ON/OFF Technical Information... -
Page 5: Specifications
Service Manual 2. Specifications 2.1 Specification Sheet Parameter Unit Value Model GWH18YD-K6DNA1A Product Code CB437001300 Rated Voltage V ～ 220~240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity(Min~Max) 5300 Heating Capacity(Min~Max) 5570 Cooling Power Input(Min~Max) 1550 Heating Power Input(Min~Max) - Page 6 Service Manual Outdoor Unit Model GWH18YD-K6DNA1A/O Outdoor Unit Product Code CB437W01300 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO.,LTD Compressor Model QXF-B141zF030A Compressor Oil 68EP Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input 1410 Compressor Overload Protector 1NT11L-6233 or KSD115ºC or HPC115/95U1...
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Page 7: Operation Characteristic Curve
Service Manual 2.2 Operation Characteristic Curve Cooling Heating 220V Conditions 220V Indoor: DB27°C/WB19°C Outdoor: DB35°C/WB24°C Indoor air flow: High Pipe length: 5m 230V 230V 240V Conditions Indoor: DB20°C/WB15°C 240V Outdoor: DB7°C/WB6°C Indoor air flow: High Pipe length: 5m 10 20 30 40 50 60 70 80 90 100 Compressor speed (rps) Compressor speed (rps) 2.3 Capacity Variation Ratio According to Temperature... -
Page 8: Cooling And Heating Data Sheet In Rated Frequency
Service Manual 2.4 Cooling and Heating Data Sheet in Rated Frequency Cooling: Rated cooling Pressure of gas pipe Inlet and outlet pipe Compressor condition(°C) connecting indoor and temperature of heat Fan speed of Fan speed of Model frequency (DB/WB) outdoor unit exchanger indoor unit outdoor unit... -
Page 9: Outline Dimension Diagram
Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit Φ55 Φ55 Unit:mm Models Φ70 Φ70 Technical Information... -
Page 10: Outdoor Unit
Service Manual 3.2 Outdoor Unit Unit:mm Technical Information... -
Page 11: Refrigerant System Diagram
Service Manual 4. Refrigerant System Diagram Cooling only model Outdoor unit Indoor unit Gas pipe side Valve Di s charge Heat exchanger (evaporator) Suction Accumlator Compressor Heat exchang Liquid pipe (condenser) side Valve Electron Capillary Strainer expansion valve COOLING Cooling and heating model Indoor unit Outdoor unit Gas pipe... -
Page 12: Electrical Part
Service Manual 5. Electrical Part 5.1 Wiring Diagram ● Instruction Symbol Symbol Color Symbol Symbol Color Symbol Name White Green Jumper cap Yellow Brown COMP Compressor Blue Grounding wire YEGN Yellow/Green Black Violet Orange Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model. ●... - Page 13 Service Manual ● Outdoor Unit 600007000516 These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit. Technical Information...
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Page 14: Pcb Printed Diagram
Service Manual 5.2 PCB Printed Diagram Indoor Unit Top view Name Neutral wire Needle stand for indoor fan Auto button Up&down swing motor left&right swing motor Interface of temperature sensor Terminal for display board connection Terminal of jumper cap Communication wire Connect earthing wire(only for the mode with this function) 11 Fuse... - Page 15 Service Manual Outdoor Unit Top view Name Compressor overload protection terminal Interface of temperature sensor Terminal of electronic expansion valve Terminal of outdoor fan 4-way valve terminal Live wire interface Interface of communication wire for indoor unit and outdoor unit earthing wire Neutral wire Compressor wiring...
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Page 16: Function And Control
Service Manual 6. Function and Control 6.1 Remote Controller Introduction Buttons on Remote Controller ON/OFF button FAN button MODE button +/- button TURBO button button button CLOCK button TIMER ON/ TIMER OFF button TEMP button button (before opening cover (after opening cover I FEEL button ON/OFF button LIGHT button... - Page 17 Service Manual 2. FAN button Press this button, Auto, Low, Medium-low, Medium, Medium-high, High speed can be circularly selected. After powered on, Auto fan speed is default. Under DRY mode, Low fan speed only can be set up. ATUO Note: It’s Low fan speed under Dry mode.
- Page 18 Service Manual TIMER ON. 10. TEMP button Press this button,the following temperature can be setted circularly: the setting temperature, indoor ambient temperature and outdoor ,displaying the indoor ambient temperature. is the outdoor ambient temperature. 3s laterit will return to the setting temprature or it depends on the other received signal within3s.
- Page 19 Service Manual the place of setting temperature "88" will display the corresponding temperature of last setting sleep curve and blink; control will resume the original timer display;temperature display will resume to original setting temperature. Sleep3- the sleep curve setting under Sleep mode by DIY could be inquired: The user could accord to sleep curve setting method to inquire the presetting sleep curve, enter into user individuation sleep setting status, Note: In the above presetting or enquiry procedure, if continuously within10s, there is no button pressed, the sleep curve setting status will be automatically quit and resume to display the original displaying.
- Page 20 Service Manual Operation Guide 1. General operation (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. (3)Pressing + or - button, to set the desired temperature (It is unnecessary to set the temp.
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Page 21: Operation Of Smart Control (Smart Phone, Tablet Pc) For Gree
Scan the following QR code with your smart phone and download Wifi Smart. Install the APP according to its guidance. When successfully installed, your smart phone homepage will show this icon User of IOS system can search for the Gree Smart in Apple store to download the Apple version APP. Configuration NOTE: Select either the original configuration or AP configuration according to the APP functions. - Page 22 Service Manual Select "Add device" and enter the page of "Add device". Tap "Manual configuration" and enter the page "Manual configuration". Step 2: Select the correct network name and enter the password. Select the server (The server setting here must keep the same as the server setting in "Settings"...
- Page 23 Service Manual Step 4: If configuration is successful, a window will pop up and read "Configuration succeeded". Then configuration is completed. NOTE: After configuration is completed, the air conditioner hot spot connected to your phone will disAPPear. You should reconnect your phone to the home Wifi router to realize long-distance control.
- Page 24 Service Manual (4) If password is forgotten, you can reset the password with your email address. Tap "Forgot password" and enter the page "Forgot password". Tap "Get verification code" to get an email verification code. Enter a new password and tap "OK" to log in. 2.Personal settings Purpose: Set name (device name, preset name, etc.) and images (device image) in order to identify a user easily.
- Page 25 Service Manual (2) Set preset name Step 1: Tap at the top right corner of the homepage "Device". Select "Add preset" and enter the page "Preset edit". Step 2: Choose the time. Tap "Name". As shown in the picture, its name is "baby room". For timer type, select "On". Then select the repeating days.
- Page 26 Service Manual to increase or decrease temperature. Tap to change working mode. Tap to enter the page of fan speed adjustment. and go around the circle to adjust fan speed. Step 2: Advanced settings to enter advanced settings. You may select "Air", "Dry", "Health", "Light", "Sleep" or "Energy saving". (2) Advanced control functions: Set scene;...
- Page 27 Service Manual Tap "Add scene" and edit the scene name, for example, "Back home". Add execution devices. to add commands. On the page "Select execution device", select the air conditioner named "babyroom". Then select "ON" or "OFF". Continue to select the next execution device as instructed above. Tap to set the interval.
- Page 28 Service Manual (3) Preset includes single-device preset and multi-device preset Single-device preset: This can preset a certain device to be On/Off at a specific time. On the homepage "Device", take air conditioner "babyroom" as an example. Tap at the bottom of the page "babyroom". Then you will enter the page "Preset edit".
- Page 29 Service Manual (4) Link(This function is APPlicable to some models) Select a master device. When the environment satisfies the parameters as set in the master device, slave devices will execute commands to realize devices linkage. Step 1: Set the parameters of master device (Select master device, select environment parameters, select master device status). at the top right corner of the homepage "Device".
- Page 30 Service Manual Tap the days below "Repeat" to select the repeating days. Then tap "Save". Step 3: Select "Execute command" Tap "Execute command" and enter the page "Select device". Tap the name of device that you want to control. Tap "ON" or "OFF" and then tap "Save" to complete the linkage. Tap "Save"...
- Page 31 Service Manual (5) Infrared control (only APPlicable to smart phones with infrared emitter). Function: Smart phone can be used as a remote controller. at the top right corner of the homepage "Device". Select "Infrared" and enter the page "Remote controller". Tap slide up to enter the page of advanced functions.
- Page 32 Service Manual Step 2: Another smart phone to be imported. Tap the model name and wait for the download. (2) Backup: To keep backup of the quick configuration information and unit’s information, including backup to cloud and backup list on the cloud.
- Page 33 Service Manual (3) Settings User can set vibration, message alerts, server, updates, etc. The server setting here must be the same as the server setting in "Configuration" mentioned before. Otherwise, remote control will be invalid. (4) Feedback User can feedback suggestions to back-stage management for maintenance and development. Tap "Feedback".
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Page 34: Operation Of Smart Control (Smart Phone, Tablet Pc)
Step 1: Air conditioner wifi is set in APP mode in factory. You can search the air conditioner wifi hotspot through your smart phone.The name of wifi hotspot is the last 8 numbers of the air conditioner mac address. Password is 12345678. gree-a gr-cn gr-dh gr-cn Step 2: Open APP and the screen will show the air conditioner that you just connected. - Page 35 Service Manual 2.Configuration method for Android phones 4 steps of configuration Step 1: Enter homepage "Device", and then tap at the top right corner. Select "Add device" and enter the page "Add device". Tap "Manual configuration" and enter the page "Manual configuration". Step 2: Tap "Next"...
- Page 36 Service Manual NOTE: After configuration is completed, the air conditioner hot spot connected to your phone will disappear. You should reconnect your phone to the home WiFi router to realize long-distance control.The above configuration only needs onephone. Other types of phones shall install this APP, connect with the air conditioner hot spot or wireless router of WiFi air conditioner.
- Page 37 Service Manual If the name of router or the password is wrong, Wifi Smart can’t connect to the wireless router. 2 mins later, please conduct the configuration operation again. Reset Wi-Fi adaptor by pointing you remote at the indoor unit and holding the mode and Turbo buttons on your remote control for 10 seconds and until you hear the beep.
- Page 38 Service Manual 2.Personal settings Purpose: Set name (device name, preset name, etc.) and images (device image) in order to identify a user easily. (1) Set device name After quick configuration, a list of controllable smart devices will be generated. Default name for air conditioner is the last 8 numbers of the air condtioner mac address.
- Page 39 Service Manual (2) Set preset name Step 1: Tap at the top right corner of the homepage "Device". Select "Add preset" and enter the page "Preset edit". Step 2: Choose the time. Tap "Name". As shown in the picture, its name is "baby room". For timer type, select "On". Then select the repeating days.
- Page 40 Service Manual Tap "babyroom" and enter the page of air conditioner control. Tap to turn on the control switch. to increase or decrease temperature. Tap to change working mode. Tap to enter the page of fan speed adjustment. and go around the circle to adjust fan speed. Step 2: Advanced settings to enter advanced settings.
- Page 41 Service Manual Continue to select the next execution device as instructed above. Tap to set the interval. Tap "Save". Tap the scene picture displayed on homepage "Device" to send the command. Then the scene "Back home" will be in execution. You may view the execution condition of the scene. (3) Preset includes single-device preset and multi-device preset Single-device preset: This can preset a certain device to be On/Off at a specific time.
- Page 42 Service Manual Tap "Name" to customize the preset name. Preset device can’t be selected and it will default to "babyroom". Select "On" for the timer type. Select repeating days to complete the preset. Multi-device preset: This can preset multiple devices to execute a command at a specific time. Please refer to the instructions as how to set preset time, name, timer type and repeating days for a single device.
- Page 43 Service Manual Tap "Temperature" to enter the page "Select temperature parameter". Slide up or down to adjust temperature. Tap "Upper limit" or "Lower limit". Tap "Mode" and "On/Off" to select the status of master device. Then tap "Save". Step 2: Set time parameter for linkage. Tap "Time parameter" to enter the page "Set time". Slide rightwards to turn on the setting time.
- Page 44 Service Manual Tap the name of device that you want to control. Tap "ON" or "OFF" and then tap "Save" to complete the linkage. Tap "Save" and then repeat the above steps to set linkage of several scenes. 4.Menu functions Menu functions (Share, Set, History, Feedback) (1) Share: To share quick configuration information and unit’s information, including local export and local import.
- Page 45 Service Manual Step 2: Another smart phone to be imported. Tap the model name and wait for the download. Notice: This function requires that the two phones are of the same operating system. They are either Android phones or Apple phones,and are connecting to the same wireless router.
- Page 46 Service Manual (3) Settings User can set vibration, message alerts, server, updates, etc. The server setting here must be the same as the server setting in "Configuration" mentioned before. Otherwise, remote control will be invalid. (4) Help Please refer to “Help” of APP for the instruction of the latest functions. Technical Information...
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Page 47: Brief Description Of Modes And Functions
Service Manual 6.4 Brief Description of Modes and Functions Indoor Unit ● 1. Basic function of system (1) Cooling mode (1) Under this mode, fan and swing operates at setting status. Temperature setting range is 16~30 (2) During malfunction of outdoor unit or the unit is stopped because of protection, indoor unit keeps original operation status. (2) Drying mode (1) Under this mode, fan operates at low speed and swing operates at setting status. - Page 48 Service Manual (8) I feel control mode After controller received I feel control signal and ambient temperature sent by remote controller, controller will work according to the ambient temperature sent by remote controller. (9) Compulsory defrosting function (1) Start up compulsory defrosting function Under ON status, set heating mode with remote controller and adjust the temperature to 16℃...
- Page 49 Service Manual Outdoor Unit ● 1. Input Parameter Compensation and Calibration (1) Check the ambient temperature compensation function Indoor ambient temperature compensation function. a. In cooling mode, the indoor ambient temperature participating in computing control = (T – ⊿ T indoor ambient temperature cooling indoor ambient temperature compensation...
- Page 50 Service Manual 3. Special Functions Defrosting Control ① Conditions for starting defrosting After the time for defrosting is judged to be satisfied, if the temperature for defrosting is satisfied after detections for continuous 3minutes, the defrosting operation will start. ② Conditions of finishing defrosting The defrosting operation can exit when any of the conditions below is satisfied: ③...
- Page 51 Service Manual 1. Starting estimation: After the compressor stopped working for 180s, if T > [T (the temperature of hysteresis is 2 )], the inner pipe frozen-preventing frequency-limited temperature machine is only allowed to start for operating, otherwise it should not be started, and should be stopped to treat according to the frozen- preventing protection: Clear the trouble under the mode of power turn-off / heating, and the protection times are not counted.
- Page 52 Service Manual 1. Frequency limited If [T ]≤T <[T ] , you should limit the frequency raising of heating overload frequency-limited temperature inner pipe heating overload frequency reducing temperature at normal speed compressor. 2. Reducing frequency at normal speed and stopping machine: If T[ ]≤T <[T...
- Page 53 Service Manual (6) Voltage sag protection After start the compressor, if the time of DC link Voltage sag [U ] is measured to be less than t Voltage sag protection time , Sagging protection voltage the machine should be stop at once, hand on the voltage sag trouble, reboot automatically after 30 minutes. (7) Communication fault When you have not received any correct signal from the inner machine in three minutes, the machine will stop for communication fault.
- Page 54 Service Manual (12) Starting-up Failure Protection for Compressor Stop the compressor after its starting-up fails, restart it after 20s if the fault doesn’t shows, and if they are all failing for the successive start 3 times, it shall be reported as Starting-up Failure, and then restart up it after 3 min. When it still not be able to operate through carry out the above process for 5 times, it is available if press ON/OFF.
- Page 55 Service Manual 6. Electric Heating Function of Chassis (1) When Toutdoor amb.≤0 , the electric heating of chassis will operate; (2) When Toutdoor amb.>2 , the electric heating of chassis will stop operation; (3)When 0 <Toutdoor amb.≤2 , the electric heating of chassis will keep original status. 7.
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Page 56: 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 57 Service Manual Safety Precautions for Refrigerant ●To realize the function of the air conditioner unit, a special refrigerant circulates in the system. The used refrigerant is the fluoride R32,which is specially cleaned. The refrigerant is flammable and inodorous. Furthermore, it can leads to explosion under certain conditions.
- Page 58 Service Manual Welding ●If you should cut or weld the refrigerant system pipes in the process of maintaining, please follow the steps as below: a. Shut down the unit and cut power supply b. Eliminate the refrigerant c. Vacuuming d. Clean it with N2 gas e.
- Page 59 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 60: Installation
Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall Space to the wall At least 15cm At least 15cm Drainage pipe Installation and Maintenance... - Page 61 Service Manual Start installation Preparation before installation Read the requirements select installation Prepare tools for electric connection location Select indoor unit Select outdoor unit installation location installation location Install the support of outdoor unit Install wall-mounting (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor Fix outdoor unit...
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Page 62: Installation Parts-Checking
Service Manual 8.4 Electric Connection Requirement 8.2 Installation Parts-checking 1. Safety Precaution Name Name (1) Must follow the electric safety regulations when installing Indoor unit Sealing gum the unit. Outdoor unit Wrapping tape (2) According to the local safety regulations, use qualified Support of outdoor power supply circuit and air switch. - Page 63 Service Manual 2. Install Wall-mounting Frame (1) Hang the wall-mounting frame on the wall; adjust it in Left Right horizontal position with the level meter and then point out the screw fixing holes on the wall. (2) Drill the screw fixing holes on the wall with impact drill (the Cut off specification of drill head should be the same as the plastic the hole...
- Page 64 Service Manual wiring board Drain hose Outlet pipe grounding ( 1 ) wire Tape Drain hose Outlet Fig.9 pipe Fig.8 wire clip Fig.13 Note: the wiring board is for reference only, please refer to the actual one. Note: (4) Put wiring cover back and then tighten the screw. (1) Add insulating pipe in the indoor drain hose in order to (5) Close the panel.
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Page 65: Installation Of Outdoor Unit
Service Manual Foot holes 9. Hang the Indoor Unit (1) Put the bound pipes in the wall pipe and then make them pass through the wall hole. (2) Hang the indoor unit on the wall-mounting frame. (3) Stuff the gap between pipes and wall hole with sealing gum. Foot holes (4) Fix the wall pipe.(As show in Fig.16) (5) Check if the indoor unit is installed firmly and closed to the... -
Page 66: Vacuum Pumping And Leak Detection
Service Manual 6. Neaten the Pipes (1) The pipes should be placed along the wall, bent reasonably Liquid valve Piezometer and hidden possibly. Min. semidiameter of bending the pipe is Gas valve 10cm. (2) If the outdoor unit is higher than the wall hole, you must set Valve cap Refrigerant charging vent... - Page 67 Service Manual 2. Test Operation (1) Preparation of test operation ● The client approves the air conditioner installation. ● Specify the important notes for air conditioner to the client. (2) Method of test operation ● Put through the power, press ON/OFF button on the remote controller to start operation.
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Page 68: Maintenance
Service Manual 9. Maintenance 9.1 Error Code List Installation and Maintenance... - Page 69 Service Manual Complete unit Off 3s current and blink detection 13 times malfunction Off 3s Defrosting will occur in and blink heating mode.Compressor once will operate while indoor It’s the normal state (during fan will stop. blinking, ON 10s and Off 05s) Installation and Maintenance...
- Page 70 Service Manual Installation and Maintenance...
- Page 71 Service Manual (1)Key detection point Test 3 Test 4 Test 1 Test 2 Test 5 Test 10 Test 9 Test 6 Test 7 Test 8 Test 13 Test 12 Test 11 Test 14 Installation and Maintenance...
- Page 72 Service Manual Test value under normal Test No. Test point Corresponding component condition test 1 Between A and C Neutral wire and live wire AC 160V~265V test 2 Between B and C Neutral wire and live wire AC 160V~265V test 3 Between D and E DC busbar electrolytic capacitor DC 180V~380V...
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Page 73: Troubleshooting For Main Malfunction
Service Manual 9.2 Troubleshooting for Main Malfunction Indoor unit 1. Malfunction of Temperature Sensor F1, F2 Malfunction diagnosis process: Troubleshooting for F1,F2 malfunction the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? Insert the temperature sensor tightly Is malfunction eliminated... - Page 74 Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 Malfunction diagnosis process: 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 75 Service Manual 3. Malfunction of Protection of Jumper Cap C5 Malfunction diagnosis process: Troubleshooting for C5 malfunction Appearance of Is there jumper cap on the the jumper cap mainboard ? Assemble the jumper cap with the same model Is malfunction eliminated the jumper cap inserted correctly and...
- Page 76 Service Manual Confirm the malfunction type according to indoor or outdoor malfunction indicator and malfunction sheet (usually it is stuck on the electric box cover or the top cover of the unit). The indicators of outdoor control board will directly display the corresponding malfunction if there is a malfunction;...
- Page 77 Service Manual Fault with outdoor unit) Malfunction indicator of outdoor unit Malfunction IMP protection Out-of-step fault Compressor overcurrent 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...
- Page 78 Service Manual Check unit in cooling mode and check the indoor in heating mode Malfunction indicator of outdoor unit check points: (including if the fan speed is too low) tube temperature sensor of indoor and outdoor unit normal Overload and high temperature protection Is outdoor ambient temperature Normal protection, please operate...
- Page 79 Service Manual Fault with outdoor unit) Malfunction indicator of outdoor unit check points: too much Power on the unit Is stop time of the compressor longer Restart it up after 3 minutes than 3 minutes? Are the wires for the Connect the wires between control compressor(UVW) connected correctly? Is panel AP1 and compressor as...
- Page 80 Service Manual Fault with outdoor unit) Malfunction indicator of outdoor unit check points: Out of step occurs once Out of step occurs in the unit is powered on operation Check if the fan terminal Replace the fan Is stop time of the Is the outdoor fan working OFAN is connected correctly capacitor C1...
- Page 81 Service Manual Fault with outdoor unit) Malfunction indicator of outdoor unit Malfunction Overload Air exhaust check points: electronic expansion valve the electronic expansion valve overload protector the air exhaust temperature sensor damaged 20 minutes after the unit is powered off Is the overload protector SAT connected well? Check if the resistance...
- Page 82 Service Manual Malfunction indicator of outdoor unit check points of indoor mainboard of outdoor mainboard(AP1) damage? Start Did the equipment operate normally before the failure occurs? Check the wiring of the indoor and outdoor units according to the wiring diagram Check if the controller connection wire inside the electric box of indoor and Is the connection right?
- Page 83 Service Manual Detection process of outdoor communication circuit (refer to the outdoor key detection points) Start Test the voltage of Test 10 The value is changing Test the voltage of Test 13 The value is changing Fault of outdoor unit Test the voltage of Test 11 The value is changing...
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Page 84: 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 85 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 86: Exploded View And Parts List
Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit MODE ON/OFF The component picture is only for reference; please refer to the actual product. Installation and Maintenance... - Page 87 Service Manual Part Code Description GWH18YD-K6DNA1A/I Product Code CB437N01300 Front Panel(low display) 20000300057T Filter Sub-Assy 11122089 Front Case Sub-Assy 00000200060 Axile Bush 10542036 Guide Louver 10512501 Ring of Bearing 26152025 O-Gasket of Cross Fan Bearing 76512203 Cross Flow Fan 10352060...
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Page 88: Outdoor Unit
Service Manual 10.2 Outdoor Unit The component picture is only for reference; please refer to the actual product. Installation and Maintenance... - Page 89 Service Manual Part Code Description GWH18YD-K6DNA1A/O Product Code CB437W01300 Front Grill 22413045 Front Panel 01535013 Drainage Connecter 06123401 Chassis Sub-assy 02803231P Drainage hole Cap 06813401 Compressor and fittings 00103919G Magnet Coil 4300040045 4-Way Valve Assy 03015200069 Cut off Valve Assy...
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Page 90: Removal Procedure
Service Manual 11. Removal Procedure Warning: Be sure to wait for a minimum of 20 minutes after turning off all power supplies and discharge the refrigerant completely before removal. 11.1 Removal Procedure of Indoor Unit Step Procedure 1.Remove filter Panel Open the panel. - Page 91 Service Manual Step Procedure 3.Remove display and panel Screws Screws that are locking the display board. Display Separate the display board from the front Panel panel. Open the front panel; separate the panel rotation shaft from the groove fixing the front panel and then removes the front panel.
- Page 92 Service Manual Step Procedure 7.Remove cold plasma generator Cold plasma generator Screws that are locking the cold plasma Screw generator.Separate the display board from the evaporator assy. 8.Remove temperature sensor and grounding wire Temperature sensor Grounding wire Cut off the tieline which binding the temperature sensor and grounding wire on the evaporator, and then pull out the indoor tube temperature sensor from the...
- Page 93 Service Manual Step Procedure 11.Electric box assy Remove the screw fixing electric box assy and then remove the electric box assy. Electric box assy Screw 12.Remove connection pipe clamp Screw Connection pipe clamp At the back of the unit, remove the screw fixing connection pipe clamp and then remove the connection pipe clamp.
- Page 94 Service Manual Step Procedure 15.Remove motor and cross flow blade Motor clamp Remove the screws fixing motor clamp Screws and then remove the motor clamp. Remove the screws at the connection place of cross flow blade and motor; lift the motor and cross flow blade upwards to remove them.
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Page 95: 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. Step Procedure 1. Remove big handle,valve cover and top cover handle Remove the screw connecting the big handle and right side plate, and then remove the big... - Page 96 Service Manual Step Procedure 2. Remove grille and cabinet screws Remove the 4 screws connecting the grille and outer case, and then remove the panel grille. grille Remove the screws connecting the outer case with motor support, isolation plate and chassis; screws lift the outer case upwards;...
- Page 97 Service Manual Step Procedure 4. Remove axial flow blade Remove the nut fixing axial flow blade and then remove the blade. axial flow blade 5.Remove electric box assy grounding wire Remove the grounding wire screw on the e l e c t r i c b o x a s s y a n d t h e n r e m o v e t h e grounding wire.