Gree GWH18TC-S3DBA1E Service Manual
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Gree GWH18TC-S3DBA1E Service Manual

Refrigerant r410a
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Change for Life
Service Manual
Models:
GWH18TC-S3DBA1E
GWH18TC-S3DBA2E
GWH18TC-S3DBA3E
GWH24TD-S3DBA1E
GWH24TD-S3DBA2E
GWH24TD-S3DBA3E
(Refrigerant R410A)
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

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Summary of Contents for Gree GWH18TC-S3DBA1E

  • Page 1 Change for Life Service Manual Models: GWH18TC-S3DBA1E GWH18TC-S3DBA2E GWH18TC-S3DBA3E GWH24TD-S3DBA1E GWH24TD-S3DBA2E GWH24TD-S3DBA3E (Refrigerant R410A) GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI...

  • 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 ........19 6.3 Operation of Smart Control (Smart Phone, Tablet PC) ..........32 6.4 Brief Description of Modes and Functions ..............45 Part Ⅱ...
  • Page 3 Service Manual 9. Maintenance ......................63 9.1 Precautions before Maintenance ..................63 9.2 Error Code List .......................64 9.3 Troubleshooting for Main Malfunction ................67 9.4 Troubleshooting for Normal Malfunction .................83 10. Exploded View and Parts List ..............85 10.1 Indoor Unit ........................85 10.2 Outdoor Unit .........................91 11.

  • Page 4: Part Ⅰ : Technical Information

    Service Manual Part : Technical Information Ⅰ 1. Summary Indoor Unit: GWH18TC-S3DBA1E/I GWH24TD-S3DBA1E/I GWH18TC-S3DBA2E/I GWH24TD-S3DBA2E/I GWH18TC-S3DBA3E/I GWH24TD-S3DBA3E/I Outdoor Unit: GWH18TC-S3DBA3E/O GWH24TD-S3DBA3E/O Remote Controller: YAC1FB Technical Information...

  • Page 5: Specifications

    Service Manual 2. Specifications 2.1 Specification Sheet 1.GWH18TC-S3DBA2E 1.GWH24TD-S3DBA2E Model 2.GWH18TC-S3DBA1E 2.GWH24TD-S3DBA3E 3.GWH18TC-S3DBA3E 3.GWH24TD-S3DBA1E 1.CB411003800 2.CB148009001 1.CB411004000 2.CB412003101 Product Code 3.CB412003201 CB412003202 3.CB148008901 Rated Voltage V ～ 220-240 220-240 Power Supply Rated Frequency 50/60 50/60 Phases Power Supply Mode Outdoor...
  • Page 6 Service Manual Model of Outdoor Unit GWH18TC-S3DBA3E/O GWH24TD-S3DBA3E/O Outdoor Unit Product Code CB412W03200 CB412W03100 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO.,LTD CO,LTD. Compressor Model QXAT-B121zF070 QXAT-D20zF030 Compressor Oil 68EP RB68EP Compressor Type Rotary Rotary L.R.A. Compressor RLA 11.3 Compressor Power Input 1430 2476...

  • Page 7: Operation Characteristic Curve

    Service Manual 2.2 Operation Characteristic Curve Cooling Heating • Conditions Indoor: DB27°C/WB19°C Outdoor: DB35°C/WB24°C Indoor air flow: High Pipe length: 5m • Conditions Indoor: DB20°C/WB15°C 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: Noise Curve

    Service Manual 2.4 Noise Curve Indoor side noise Outdoor side noise Heating Cooling Compressor frequency(Hz) Indoor fan motor rating speed 2.5 Cooling and Heating Data Sheet in Rated Frequency Cooling: Rated cooling Pressure of gas pipe Inlet and outlet pipe Compressor condition(°C) (DB/ connecting indoor and...

  • Page 9: Outline Dimension Diagram

    Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit Φ70 Φ70 Φ70 Φ70 Unit:mm Model 1018 1178 Technical Information...

  • Page 10: Outdoor Unit

    Service Manual 3.2 Outdoor Unit GWH18TC-S3DBA3E/O Unit:mm GWH24TD-S3DBA3E/O 1000 Unit:mm Technical Information...

  • Page 11: Refrigerant System Diagram

    Service Manual 4. Refrigerant System Diagram Outdoor unit Indoor 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 Capillary Electron Strainer expansion valve COOLING HEATING Connection pipe specification: Liquid pipe:1/4"...

  • Page 12: Electrical Part

    Service Manual 5. Electrical Part 5.1 Wiring Diagram ● Instruction Symbol Symbol Color Symbol Symbol Color Symbol Name White Green Jumper cap Yellow Brown COMP Compressor Blue Grounding wire YEGN Yellow/Green Black 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 GWH18TC-S3DBA3E/O GWH24TD-S3DBA3E/O 63610000223 The above data is subject to change without notice. Please refer to the nameplate of the unit. Technical Information...

  • Page 14: Pcb Printed Diagram

    Service Manual 5.2 PCB Printed Diagram Indoor Unit ● Top view 1 Grounding wire Interface of health function live wire Interface of health function neutral wire 4 Neutral wire 5 Interface of DC motor Interface of electrostatuc dedusting 7 Auto button 8 Up&down swing interface 1 9 eft&right swing interface 10 Up&down swing interface 2...
  • Page 15 Service Manual Outdoor Unit ● 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...

  • Page 16: Function And Control

    Service Manual 6. Function and Control 6.1 Remote Controller Introduction ON/OFF button MODE button FAN button TURBO button WIFI ▲/ button button button SLEEP button I FEEL button TIMER ON / TIMER OFF button CLOCK button QUIET button(This function is unavailable for this model) X-FAN button(Note: X-FAN is the same with BLOW.) LIGHT button...
  • Page 17 Service Manual 1. ON/OFF button Press this button can turn on or turn off the air conditioner. After turning on the air conditioner, operation indicator " "on indoor unit’s display is ON (green indicator. The colour is different for different models), and indoor unit will give out a sound. 2.
  • Page 18 Service Manual ● Under swing left and right mode, when the status is switched from off to , if press this button again 2s later, status will switch to off status directly; if press this button again within 2s, the change of swing status will also depend on the circulation sequence stated above. button Press this button can select up &...
  • Page 19 Service Manual "TIMER OFF" button can set the time for timer off. After pressing this button," "icon disappears and the word "OFF" on remote controller blinks. Press " ▲ " or " " button to adjust TIMER OFF setting. After each pressing " ▲ " or " "...
  • Page 20 Service Manual ● When selecting " " or no display with remote controller, temperature indicator on indoor unit displays set temperature. ● When selecting " " with remote controller, temperature indicator on indoor unit displays indoor ambient temperature. ● When selecting " "...
  • Page 21 Service Manual Replacement of batteries in remote controller 1. Press the back side of remote controller marked with " ", as shown in the fig, and then push out the cover of battery box along the arrow direction. 2. Replace two 7# (AAA 1.5V) dry batteries, and make sure the position of "+" polar and "-" polar are correct. 3.

  • Page 22: 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 23 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 24 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 25 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 26 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 27 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 28 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 29 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 30 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 31 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 32 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 33 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 34 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".

  • Page 35: 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 36 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 37 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 38 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 39 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 40 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 41 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 42 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 43 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 44 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 45 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 46 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 47 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...

  • Page 48: Brief Description Of Modes And Functions

    Service Manual 6.4 Brief Description of Modes and Functions Indoor Unit ● 1.Temperature Parameters Indoor preset temperature (Tpreset) Indoor ambient temperature (Tamb.) 2.Basic functions (The temperature in this manual is expressed by Centigrade. If Fahrenheit is used, the switchover between them Tf=TcX1.8+32.) Once the compressor is energized, there should be a minimum interval of 3 minutes between two start-ups.
  • Page 49 Service Manual Start heating Tpreset +5 ˚C Previous running status Tpreset +2 ˚C Tamb. Start heating 6 min. 3 min. 6 min. Compressor Blow residual Outdoor unit Blow residual heat heat Indoor unit 2 min. 2 min. 4-way valve Stop minimum and the other horizontal louver(small one) will close.
  • Page 50 Service Manual operate at blowing residual heat. When Tindoor amb. ≤9°C, indoor fan operates at high fan speed; When 9°C ＜ Tindoor amb. ＜ 11°C, indoor fan operates at medium fan speed; When Tindoor amb.≥11°C, indoor fan operates at low fan speed; When changing among low high, medium, and low speeds, the minimum operation time is 210 seconds.
  • Page 51 Service Manual In SLEEP mode, the unit will automatically select appropriate sleep curve to operate according to different temperature setting. (5)Turbo Function This function can be set in cooling or heating mode to quickly cool or heat the room. (6)X-FAN Function ①...
  • Page 52 Service Manual a. If the position is set between O and D1, A 1and C1 or B1 and D1 by remote controller, the horizontal louver will swing between O and D1. b. For model 9K/12K, only when big horizontal louver rotates to the second position for heating( 62°of corresponding angle), this louver will be activated.
  • Page 53 Service Manual will be displayed; if jumper cap has malfunction, “C5” will be displayed. (11)Memory Function ① Memory when power failure upon turning on the unit ◆ Memory content: ON status, mode, up&down swing, light, set temperature, set fan speed, general timer, Fahrenheit/ Centigrade ◆...
  • Page 54 Service Manual Outdoor Unit ● 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.
  • Page 55 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.

  • 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 Installing and Relocating the Unit: To ensure safety, please be mindful of the following precautions. Warnings 1. When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances other than the specified refrigerant.
  • Page 58 Service Manual Main Tools for Installation and Maintenance 1. Level meter, measuring tape 2. Screw driver 3. Impact drill, drill head, electric drill 4. Electroprobe 5. Universal meter 6. Torque wrench, open-end wrench, inner hexagon spanner 7. Electronic leakage detector 8.

  • Page 59: 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 60 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 61: 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 62 Service Manual in the holes. 5. Connect the Pipe of Indoor Unit (3) Fix the wall-mounting frame on the wall with tapping screws (1) Aim the pipe joint at the corresponding bellmouth.(As show (ST4.2X25TA) and then check if the frame is firmly installed by in Fig.5) pulling the frame.
  • Page 63 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 for installation when binding them.

  • Page 64: 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 the Hex nut diameter(mm) actual installation situation) Φ6 15~20 Φ9.52 30~40 (1) Select installation location according to the house structure.

  • Page 65: 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 66: Maintenance

    Service Manual 9. Maintenance 9.1 Precautions before Maintenance There are high-capacity electrolytic capacitors on the outdoor mainboard. Thus, even the power is cut off, there is high voltage inside the capacitors and it needs more than 20min to reduce the voltage to safety value. Touching the electrolytic capacitor within 20min after cutting the power will cause electric shock.

  • Page 67: Error Code List

    Service Manual 9.2 Error Code List Display Method of Outdoor Unit (Indicator has 3 kinds of display status and they will be displayed Dual-8 Malfunction circularly every 5s.) Code A/C status Possible Causes Name □OFF ■Illuminated Display ☆ Blink (D40) (D41) (D42) (D43)
  • Page 68 Service Manual Outdoor During cooling and drying condenser operation, compressor stops while Outdoor temperature sensor hasnt been connected temperature □ □ □ indoor fan will operate; During well or is damaged. Please check it by referring to the ☆ sensor is heating operation, the complete unit resistance table for temperature sensor) open/short...
  • Page 69 Service Manual During cooling and drying Malfunction operation, compressor will stop of module □ □ ■ while indoor fan will operate; Replace outdoor control panel AP1 ☆ temperature During heating operation, the sensor circuit complete unit will stop After the complete unit is de-energized for 20mins, During cooling operation, Module high check whether the thermal grease on IPM Module of...

  • Page 70: Troubleshooting For Main Malfunction

    Service Manual 9.3 Troubleshooting for Main Malfunction ●Indoor unit: 1. Malfunction of Temperature Sensor F1, F2 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 Is there short circuit due to trip - over of the parts?
  • Page 71 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 72 Service Manual 3. Malfunction of Protection of Jumper Cap C5 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 tightly ? Insert the...
  • Page 73 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 74 Service Manual 5. Malfunction of detecting plate(WIFI) JF Start check if the connection wire are correctly connected detecting Replace the plate with the same model Is malfunction eliminated Replace the mainboard with the same model The end Installation and Maintenance...
  • Page 75 Service Manual ●Outdoor unit: 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...
  • Page 76 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; ● Is reactor (L) well connected? Is connection wire loosened or pull-out? Is reactor (L) damaged? Malfunction diagnosis process: Turn on the unit and wait 1 minute...
  • Page 77 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 78 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 79 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; ● If the radiating environment of indoor and outdoor unit is well. Malfunction diagnosis process: Anti-high temperature, overload protection...
  • Page 80 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 81 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 82 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? ● If the overload protector is damaged? Malfunction diagnosis process: After the unit de-energized...
  • Page 83 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 outdoor unit and...
  • Page 84 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 85 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 11 position in...

  • Page 86: Troubleshooting For Normal Malfunction

    Service Manual 9.4 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 87 Service Manual 4. ODU Fan motor can't operate Possible causes Discriminating method (air conditioner status) Troubleshooting Connect wires according to wiring diagram to Wrong wire connection, or poor Check the wiring status according to circuit make sure all wiring terminals are connected connection diagram firmly...

  • Page 88: Exploded View And Parts List

    Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit (1) 18K Unit The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 89 Service Manual Part Code Description GWH18TC-S3DBA3E/I Product Code CB412N03201 CB412N03202 Front Panel 20022287 20022287 Display Board 30565210 30565210 Filter Sub-Assy 1112209105 1112209105 Screw Cover 242520179 242520179 Front Case 2001282101 2001282101 Guide Louver 1051222501 1051222501 Guide Louver (small) 1051222601 1051222601 Helicoid Tongue 2611236701 2611236701 Left Axile Bush...
  • Page 90 Service Manual Part Code Description GWH18TC-S3DBA2E/I GWH18TC-S3DBA1E/I Product Code CB411N03800 CB148N09001 Front Panel 20022272T 20012820T Display Board 30565209 30565141 Filter Sub-Assy 1112209105 1112209105 Screw Cover 242520179 24252016 Front Case 2001282101 20012821 Guide Louver 1051222501 10512225 Guide Louver (small) 1051222601 1051222601...
  • Page 91 Service Manual (2) 24K Unit The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 92 Service Manual Part Code Description GWH24TD-S3DBA3E/I GWH24TD-S3DBA2E/I Product Code CB412N03101 CB411N04000 Front Panel Assy 20022299 20022305 Filter Sub-Assy 11122136 11122136 Screw Cover 242520054 242520054 Front Case Sub-assy 20022298 20022298 Guide Louver 1051223601 1051223601 Small Guide Louver 1051223701 1051223701 Swing Lever2 1058211601 1058211601 Air Louver...
  • Page 93 Service Manual Part Code Description GWH24TD-S3DBA1E/I Product Code CB148N08901 Front Panel Assy 20012894T Filter Sub-Assy 11122136 Screw Cover 242520053 Front Case Sub-assy 20022004 Guide Louver 10512236 Small Guide Louver 1051223701 Swing Lever2 1058211601 Air Louver 10512252 Left Axile Bush 1051203701 Water Tray Assy 20182148 Rear Case Sub-Assy...

  • Page 94: Outdoor Unit

    Service Manual 10.2 Outdoor Unit GWH18TC-S3DBA3E/O The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 95 Service Manual Part Code Description GWH18TC-S3DBA3E/O Product Code CB412W03200 Front Grill 22413025 Front Panel 01535013P Axial Flow Fan 10335008 Fan Motor 1501506402 Electric Box Assy 10000100268 Main Board 30138000395 Terminal Board 420101943 Handle 26233053 Left Side Plate 01305093P Supporting Board(Condenser) 01795010 Coping 01255005P...
  • Page 96 Service Manual GWH24TD-S3DBA3E/O The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 97 Service Manual Part Code Description GWH24TD-S3DBA3E/O Product Code CB412W03100 Fan Motor 1501403402 Terminal Board 420101943 Electric Box Cover 20125002 Radiator 49015215 Main Board 30138000101 Electric Box Assy 10000100269 Left Handle 26233053 Left Side Plate 01305043P Motor Support Assy 01705038 Condenser Support Plate 01175092 Top Cover Sub-Assy 01255015...

  • Page 98: 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 11.1 Removal Procedure of Indoor Unit completely before removal. Steps Procedure 1. Before disassembling the unit Before disassembling the unit.
  • Page 99 Service Manual Steps Procedure Remove the rotating shaft of big guide louver from the groove, slightly bend thebig guide louver to remove it. big guide louver Remove the axial bushing of small guide louver. axial bushing Remove the rotating shaft of small guide louver from the groove, slightly bend the small guide louver to remove it.
  • Page 100 Service Manual Steps Procedure panel, to remove the displa y. screw detecting plate Remove the screw fixing detecting plate and remove the detecting plate. screw Remove the screw fixing electric box cover2 and remove the electric box cover2. electric box cover2 Installation and Maintenance...
  • Page 101 Service Manual Steps Procedure 5.Remove front case electric box cover 2 screw Remove the screws fixing electric box cover 2, to remove the electric box cover screw clamp Remove the screws fixing front panel, loosen the clamps, to remove the front case.
  • Page 102 Service Manual Steps Procedure 6.Remove swing fan blade Loosen the clamps fixing swing connecting rod, to remove the swing connecting rod. clamp swing connecting rod clamp remove the swing fan blade. swing fan blade 7.Remove electric box sub-assy heat exchanger thermistor Remove the indoor tube temp.
  • Page 103 Service Manual Steps Procedure to remove the cover. electric box cover electric box cover sub-assy screw Remove every wiring terminals, and remove the electric box cover sub-assy. 7.Remove evaporator sub-assy auxiliary piping pipe clamp Remove the screws fixing connection pipe clamp, to remove the connection pipe clamp.
  • Page 104 Service Manual Steps Procedure auxiliary piping Remove the screws fixing evaporator sub-assy, slightly regulate the tube, to remove the evaporator sub-assy. evaporator sub-assy 8.Remove cross fan blade and motor motor, to remove the motor. up&down swing motor to remove the motor. left&right swing motor Installation and Maintenance...
  • Page 105 Service Manual Steps Procedure Remove the screws fixing motor clamp, to remove the motor clamp. screw motor clamp Remove the cross fan blade and motor. bearing cushion rubber base Remove the shafting bearing cushion rubber base cross fan blade motor blade and motor, and then remove the motor.
  • Page 106 Service Manual Steps Procedure Before disassembly of the unit Before disassembling the unit. 2. Remove filter panel Open the panel. air filter Loosen the clasps on filter, push the filter inward and then pull it upward, then the filter can be removed. hooks air filter Installation and Maintenance...
  • Page 107 Service Manual Steps Procedure 3. Remove the panel screw Remove the screws fixing display on the panel, to remove the display. display Along the groove fixing front panel, slide the rotor shaft outward to remove the front panel. panel Remove the panel. 4.
  • Page 108 Service Manual Steps Procedure 5. Remove Axial bush Remove the axial bush of horizontal louver to remove the axial bush. Axial sleeve hook Remove Axial bush Axial bush 6. Remove front case Remove the screw cover of front case, unscrew the 8 screws of front case with screwdriver.
  • Page 109 Service Manual Steps Procedure 7. Remove electric box temperature sensor Remove Temperature Sensor; Twist off the earthing screw fixing the evaporator. screw earth wire electric box cover 2 Remove the screw of electric box.Take out the electric box cover to separate the electric box cover 2.
  • Page 110 Service Manual Steps Procedure 8. Remove evaporator sub-assy water tray Loosen the clasps connecting the water tray and chassis, and then remove the water tray. Remove the screws fixing connection pipe clamp, to remove the connection pipe clamp. pipe clamp screw Remove the screws fixing evaporator sub-assy, slightly regulate the tube, to...
  • Page 111 Service Manual Steps Procedure srews srews Turn over the indoor unit and adjust the pipe line to the position as shown by the broken line. Lift up the evaporator, and then remove the evaporator. evaporator 9. Remove the cross-flow louver and motor Remove the 2 screws of step motor with screwdriver, and remove the step motor.
  • Page 112 Service Manual Steps Procedure Remove screws fixing cross flow blade and motor. Cross blow blade Fan motor Remove the motor sub-assy. Ring of Bearing Pull out the plug of ring of bearing. Installation and Maintenance...

  • Page 113: Removal Procedure Of Outdoor Unit

    Service Manual 11.2 Removal Procedure of Outdoor Unit Steps Procedure 1. Remove big handle,valve cover and top cover Remove the screw connecting the big handle and right side plate, and then remove the big handle. Remove the screw connecting the valve cover and handle right side plate, and then remove the valve cover.
  • Page 114 Service Manual Steps Procedure Remove the screws connecting the outer case with motor support, isolation plate and chassis; lift the outer case upwards; loosen the clasps of outer case with right side plate and left side plate, and then remove the outer case. outer case 3.
  • Page 115 Service Manual Steps Procedure 4. Remove axial flow blade Remove the nut fixing axial flow blade and then remove the blade. axial flow fan motor support Remove the 6 screws fixing the motor and then remove the motor. Remove the 2 screws connecting the motor support and chassis, and then loosen the stopper to remove the motor support.
  • Page 116 Service Manual Steps Procedure 6. Remove the soundproof sponge Tear off the sticking stripe and then remove the soundproof sponge. soundproof sponge 7. Remove isolation plate Remove the 2 screws connecting the isolation plate and condenser side plate; remove the 3 screws connecting the isolation plate and chassis, and then remove the isolation plate.
  • Page 117 Service Manual Steps Procedure 9. Remove compressor compressor Remove the 3 foot nuts fixing compressor and then lift the compressor upwards to remove the compressor and damping cushion. Note: Keep the ports of discharge pipe and suction pipe from foreign objects. condenser sub-assy 10.
  • Page 118 Service Manual GWH24TD-S3DBA3E/O Steps Procedure 1.Remove handle and valve cover handle Twist off the screws used for fixing the handle，pull the handle up ward to remove it. Remove the screws fixing the valve cover and then remove the valve cover. valve cover 2.Remove top panel top panel...
  • Page 119 Service Manual Steps Procedure 4.Remove grille and panel Twist off the screws connecting the grille and panel, and then remove the grille. Twist off the screws connecting the panel, chassis and motor support with screwd-river, and then remove the panel. grille panel 5.Remove right side plate...
  • Page 120 Service Manual Steps Procedure 7.Remove electric box electric box Twist off the screws on electric box, cut off the tieline with scissors or pliers, pull out the wiring terminal, pull it upwards to remove the electric box. Twist off the screws on electric box (fireproofing) electric box with screwdriver, and then remove the electric (fireproofing)
  • Page 121 Service Manual Steps Procedure 9.Remove motor support Twist off the tapping screws fixingthe motor support, pull it upwardsand then remove the motor support. motor support 10.Remove isolation sheet Twist off the screws connecting isolation sheet and end plate of condenser and chassis, and then remove the isolation sheet.
  • Page 122 Service Manual Steps Procedure 12.Remove gas valve and liquid valve Twist off the 2 bolts fixing the valve sub-assy. Unsolder the soldering joint between gas valve and air-return pipe and then remove the gas valve.(note: when unsoldering the soldering joint, wrap the gas valve with wet cloth completely to gas valve avoid the damage to valve, and release all...
  • Page 123 Service Manual Steps Procedure 15.Remove left side plate Twist off the screws connecting the left side plate and chassis with screwdriver, and then remove the left side plate. left side plate 16.Remove chassis and condenser Pull it upwards to separate the chassis and condenser.

  • Page 124: 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 125: 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 126: 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( C) Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 138.1 18.75 3.848 1.071 128.6 17.93 3.711 1.039 121.6 17.14 3.579 1.009...
  • Page 127 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 4.289...
  • Page 128 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 4.08 580.6...
  • Page 129 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.

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