Related Manuals for GREE ELECTRIC GWHDND3EO
Summary of Contents for GREE ELECTRIC GWHDND3EO
- Page 1 Change for Life Service Manual Models: GWHD(18)ND3EO GWHD(18)ND3FO GWHD(24)ND3EO GWHD(24)ND3FO GWHD(18)ND3GO GWHD(24)ND3GO (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 3. Outline Dimension Diagram ..............10 4. Refrigerant System Diagram ..............11 5. Electrical Part ......................12 5.1 Wiring Diagram .......................12 5.2 PCB Printed Diagram .....................14 6. -
Page 3: Part Ⅰ : Technical Information
Service Manual Part Ⅰ : Technical Information 1. Summary Outdoor Unit GWHD(18)ND3EO GWHD(18)ND3FO GWHD(18)ND3GO GWHD(24)ND3EO GWHD(24)ND3FO GWHD(24)ND3GO Technical Information... -
Page 4: Specifications
Service Manual 2. Specifications 1.GWHD(18)ND3EO Model 2.GWHD(18)ND3FO 1.CB228W04100 Product Code 2.CB228W07600 Rated Voltage 208/230 Power Rated Frequency supply Phases Cooling capacity(max~min) 5280(2051~6155) Heating capacity(max~min) 5570(2500~6624) Cooling Power Input(max~min) 1650 Heating Power Input(max~min) 1640 Cooling Current Input 10.67/10.56 Heating Current Input 6.78/6.10 Rated Power Input 2800... - Page 5 Service Manual Cross-sectional Area of Power Cable Conductor sq in 0.0032 Recommended Power Cable(Core) Connection Pipe Connection Method Flare Connection Not Additional Gas Connection Pipe Length 16.4 Connection Pipe Gas Additional Charge oz/ft. Outer Diameter of Liquid Pipe1(GREE Allocation) inch (Metric) Outer Diameter of Liquid Pipe2(GREE Allocation) inch...
- Page 6 Service Manual 1.GWHD(24)ND3EO Model 2.GWHD(24)ND3FO 1.CB228W04200 CB228W04203 Product Code 2.CB228W07500 Rated Voltage 208/230 Power Rated Frequency supply Phases Cooling capacity(max~min) 7620(2198~9672) Heating capacity(max~min) 8500(2198~7500) Cooling Power Input(max~min) 2400 Heating Power Input(max~min) 2350 Cooling Current Input 10.65 Heating Current Input 10.43 Rated Power Input 4550 Rated Current...
- Page 7 Service Manual Cross-sectional Area of Power Cable Conductor sq in 0.0051 Recommended Power Cable(Core) Connection Pipe Connection Method Flare Connection Not Additional Gas Connection Pipe Length 16.4 Connection Pipe Gas Additional Charge oz/ft. Outer Diameter of Liquid Pipe1(GREE Allocation) inch (Metric) Outer Diameter of Liquid Pipe2(GREE Allocation) inch...
- Page 8 Service Manual Model GWHD(18)ND3GO Product Code CB228W07700 Rated Voltage 208/230 Power Rated Frequency supply Phases Cooling capacity(max~min) Btu/h 18000(6155~6998) Heating capacity(max~min) Btu/h 19000(8530~22600) Cooling Power Input(max~min) 1440 Heating Power Input(max~min) 1520 Cooling Current Input 6.26 Heating Current Input 6.61 Rated Power Input 2800 Rated Current 12.42...
- Page 9 Service Manual Cross-sectional Area of Power Cable Conductor sq in 0.0032 Recommended Power Cable(Core) Connection Pipe Connection Method Flare Connection Not Additional Gas Connection Pipe Length 32.8 Connection Pipe Gas Additional Charge oz/ft. Outer Diameter of Liquid Pipe1(GREE Allocation) inch (Metric) Outer Diameter of Liquid Pipe2(GREE Allocation) inch...
- Page 10 Service Manual Model GWHD(24)ND3GO Product Code CB228W07800 Rated Voltage 208/230 Power Rated Frequency supply Phases Cooling capacity(max~min) Btu/h 24000(7500~33000) Heating capacity(max~min) Btu/h 26000(7500~35000) Cooling Power Input(max~min) 1920 Heating Power Input(max~min) 2050 Cooling Current Input 8.35 Heating Current Input Rated Power Input 4550 Rated Current 20.19...
- Page 11 Service Manual Cross-sectional Area of Power Cable Conductor sq in 0.0051 Recommended Power Cable(Core) Connection Pipe Connection Method Flare Connection Not Additional Gas Connection Pipe Length 98.4 Connection Pipe Gas Additional Charge oz/ft. Outer Diameter of Liquid Pipe1(GREE Allocation) inch (Metric) Outer Diameter of Liquid Pipe2(GREE Allocation) inch...
-
Page 12: Outline Dimension Diagram
Service Manual 3. Outline Dimension Diagram GWHD(18)ND3EO GWHD(18)ND3FO GWHD(18)ND3GO 35 1/8 13 27/64 15 39/64 Unit:inch GWHD(24)ND3EO GWHD(24)ND3FO GWHD(24)ND3GO 13 27/64 35 1/8 17 21/64 38 37/64 Unit:inch Technical Information... -
Page 13: Refrigerant System Diagram
Service Manual 4. Refrigerant System Diagram outdoor indoor filter A heat exchanger filter outdoor heat exchanger 4-way valve B heat exchanger filter high pressure switch Note: Not available for 14K/18K model discharge silencer C heat exchanger discharge temperature sensor filter D heat exchanger gas -liquid separator filter... -
Page 14: Electrical Part
Service Manual 5. Electrical Part 5.1 Wiring Diagram ●Instruction Symbol Symbol Color Symbol Symbol Color Symbol Name White GREEN COMP Compressor Yellow Brown Grouding wire Blue YEGN Yellow/Green Black Violet Orange ● Outdoor Unit GWHD(18)ND3EO GWHD(18)ND3FO GWHD(18)ND3GO TERMINAL POWER BLOCK L2 L3 EXHAUST AC-L1... - Page 15 Service Manual GWHD(24)ND3EO GWHD(24)ND3FO GWHD(24)ND3GO 63633609 These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit. Technical Information...
-
Page 16: Pcb Printed Diagram
Service Manual 5.2 PCB Printed Diagram GWHD(18)ND3EO GWHD(18)ND3FO GWHD(18)ND3GO ● TOP VIEW Terminal of compressor Terminal of low-temperature cooling temperature sensor Overload protection terminal of compressor Temperature sensor terminal of outdoor unit High pressure protection terminal Low pressure protection terminal Terminal of outdoor unit Electric heating belt terminal of chassis... - Page 17 Service Manual GWHD(24)ND3EO GWHD(24)ND3FO GWHD(24)ND3GO ● TOP VIEW 2 3 4 1 Terminal of compressor 2 Low pressure protection terminal 3 High pressure protection terminal 4 Overload protection terminal of compressor 5 Temperature sensor terminal of outdoor unit 6 Electric heating terminal of chassis 7 E l e c t r i c h e a t i n g t e r m i n a l o f compressor 8 Terminal of outdoor unit...
-
Page 18: Function And Control
Service Manual 6. Function and Control 1 Basic functions of the system 1.1 Cooling Mode 1.1.1 Cooling conditions and process: If the compressor is in stop status and start the unit for cooling operation, when one of the indoor units reaches the cooling operation condition, the unit start cooling operation;... - Page 19 Service Manual 1.3.3 Outdoor fan control in heating mode The outdoor fan starts before 5s of the starting of compressor and then it will run in high speed for 40s; The fan shall run at every speed for at least 80s; When the compressor stops, the outdoor fan stops after 1min.
- Page 20 Service Manual 2.4 Communication malfunction Detection of the quantity of installed indoor units: After 3min of energizing, if the outdoor unit does not receive the communication data of certain indoor unit, the outdoor unit will judge that indoor unit is not installed and will treat it as it is not installed. If the outdoor unit receives the communication data of that indoor unit later, the outdoor unit will treat that unit as it is installed.
-
Page 21: 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 22 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 23: Installation Manual
Service Manual 8. Installation Manual Installation procedures Start installation Preparation before installation Read the requirements select installation Prepare tools for electric connection location Select indoor unit Select outdoor unit installation location installation location Install wall-mounting Install the support of outdoor unit (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor... -
Page 24: Electrical Connections
Service Manual 8.1 Electrical Connections 1. Remove the handle at the right side plate of the outdoor GWHD(18)ND3EO GWHD(18)ND3FO unit (one screw). GWHD(18)ND3GO 2. Remove the cable clamp, connect the power connection cable with the terminal at the row of connection and fix the connection. -
Page 25: Installing The Outdoor Unit
Service Manual 8.2 Installing the Outdoor Unit Install the drain fitting and the drain hose(for model with heat pump only) Location Condensation is produced and flows from the outdoor unit Use bolts to secure the unit to a flat, solid floor. when the appliance is operating in the heating mode. -
Page 26: Installation Dimension Diagram
Service Manual 8.3 Installation Dimension Diagram Use suitable instruments for the refrigerant R410A. ● Do not use any other refrigerant than R410A. Do not use mineral oils to clean the unit. The installation must be done by trained and qualified service personnel with reliability according to this manual. Contact service center before installation to avoid the malfunction due to unprofessional installation. -
Page 27: Check After Installation
Service Manual 8.4 Check after Installation Check Items Problems Owing to Improper Installation Is the installation reliable? The unit may drop, vibrate or make noises May cause unsatisfactory cooling (heating) Has the gas leakage been checked? effect Is the thermal insulation of the unit May cause condensation and water dropping sufficient? May cause condensation and water dropping... -
Page 28: Troubleshooting
Service Manual 9. Troubleshooting 9.1 Flashing LED of Indoor/Outdoor Unit and Primary Judgement 1. Requirement of malfunction display When several malfunctions happen at the same time, malfunction codes will be displayed circularly. 2. Malfunction display method (1) Hardware malfunction: it will be displayed immediately, please refer to “Malfunction status sheet”; (2) Operation status: it will be displayed immediately, please refer to “Malfunction status sheet”;... -
Page 29: Malfunction Checking And Elimination
Service Manual Viewing malfunction code through remote controller within Compressor overload protection 200s; displayed directly on nixietube after 200s Wrong connection of communication wire or malfunction of Hardware malfunction electronic expansion valve Detection status of wrong connection of communication wire Operation status or malfunction of electronic expansion valve t c i... - Page 30 1 IPM protection malfunction: Main checking point: If the input voltage of the unit is within normal range? Service Manual If the connection wire of compressor is connected well? Is it loose? If the connection sequence is correct? If the resistance of compressor coil is normal? If the isolation of compressor coil with copper pipe is good? If the unit is overloaded? If the heat radiation of the unit is good? If the refrigerant charge is suitable? Energize the unit...
- Page 31 Service Manual 2. PFC protection malfunction, capacity charging malfunction Main checking points: If the wiring of the induction is connected well and if the induction is broken; If the mainboard is broken; Flow chart: Start Check if power supply is normal Turn on the unit after power supply Power supply is abnormal?
- Page 32 Service Manual Start Check If the power supply is normal Turn on the unit after the power supply resumes to Power supply is abnormal normal situation Check if the outdoor induction is broken Malfunction is eliminated Replace the outdoor mainboard Installation and Maintenance...
- Page 33 Service Manual 3. Compressor desynchronizing malfunction Main checking points: If the pressure of the system is too high; If the eletric expansion valve is working normally or it is broken; If the radiation of the unit is good; Flow chart: The unit appears desynchronizing as soon as energizing and starting The stop duration of the compressor is longer...
- Page 34 Service Manual Desynchronizing happens during operation Check if fan Replace the fan capacitor Outdoor unit is working? terminal is connected well Improve radiation situation of the unit Unit radiation is good? (such as cleaning Replace the outdoor unit the heat exchanger, improve ventilation Turn on the unit after the power...
- Page 35 Service Manual 4. Compressor overload, diacharge protectionmalfunction Main checking points: If the eletric expansion valve is connected well or it is broken; If there is refrigerant leakage; If the overload protector is broken; Flow chart: Start If the overload protector is connected well? Check the resistance between the two ends of the overload protector in ambient temperature, if the resistance is below 1k...
- Page 36 Service Manual 5. Start failuremalfunction Main checking points: If the connection wire of the compressor is connected properly; If the stop duration of the compressor is sufficient; If the compressor is broken; If the refrigerant charging amount is too much; Flow chart: Energize and start the unit...
- Page 37 Service Manual 6. Temperature sensor malfunction Main checking points: If the temperature sensor is damaged or broken If the terminal of the temperature sensor is loosended or not connected; If the mainboard is broken; Flow chart: Start Check whether the wiring terminal between temperature sensor and controller is loosened or poorly contacted? Insert the temperature...
- Page 38 Service Manual 7. DC fan malfunction Main checking points: If the outdoor fan is blocked by foreign objects; The connection wire of DC fan is connected reliably? If it is loose? Flow chart: Start Turn on the unit Check if the after removing the outdoor fan is blocked by foreign objects...
- Page 39 Service Manual 8. Communication malfunction Main checking points: If the connection wire between the indoor unit and outdoor unit is connected well, if the wires inside the unit is connected well; If the indoor mainboard or outdoor main board is broken; Flow chart: Communication malfunction of some indoor units...
- Page 40 Service Manual All the indoor units appear communication malfunction De-energize,check if the connection wire of indoor and outdoor unit and the wire of the eletric box is connected correctly Reconnect according to Eliminate the malfunction Connected correctly? the wiring diagram De-energize, check if the connection wire between the outdoor mainboard and the filter board according to the wiring diagram...
- Page 41 Service Manual 9. Anti-high temperatureand overload malfunction Main checking points: If the outdoor ambient temperature is within the normal range; If the indoor fan and outdoor fan are running normally; If the indoor and outdoor radiation environment is good; Flow chart: Start It is a normal protection, please If the outdoor ambient temperature...
-
Page 42: Maintenance Method For Normal Malfunction
Service Manual 9.3 Maintenance Method for Normal Malfunction 1. Air Conditioner Cant be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether its due to power failure. If yes, No power supply, or poor After energization, operation indicator isnt bright wait for power recovery. - Page 43 Service Manual 4. ODU Fan Motor Cant Operate Possible causes Discriminating method (air conditioner status) Troubleshooting Connect wires according to wiring diagram to Wrong wire connection, or poor Check the wiring status according to circuit make sure all wiring terminals are connected connection diagram firmly...
-
Page 44: Exploded View And Parts List
Service Manual 10. Exploded View and Parts List GWHD(18)ND3EO GWHD(18)ND3FO GWHD(18)ND3GO The component picture is only for reference; please refer to the actual product. Installation and Maintenance... - Page 45 Service Manual Part Code Description GWHD(18)ND3EO GWHD(18)ND3FO Product Code CB228W04100 CB228W07600 Front Grill 01473050 01473049 Front Panel Assy 01433069 01433069 Chassis Sub-assy 02803280P 02803263P Drainage Connecter 06123401 Drainage hole Cap 06813401 Gas-liquid Separator Assy 07223048 07223048 Compressor and Fittings 0010524501G 00105249G Electric Heater(Compressor) 7651873215...
- Page 46 Service Manual Part Code Description GWHD(18)ND3GO Product Code CB228W07700 Front Grill 01473049 Front Panel Assy 00000300024 Chassis Sub-assy 02803263P Drainage Connecter 06123401 Drainage hole Cap 06813401/76713033/76713068 Gas-liquid Separator Assy 07223048 Compressor and Fittings 00105249G Electric Heater(Compressor) 7651300403 Tube Connector Sub-assy Magnet Coil 4300040045 4-Way Valve Assy...
- Page 47 Service Manual GWHD(24)ND3EO GWHD(24)ND3FO GWHD(24)ND3GO The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
- Page 48 Service Manual Part Code Description GWHD(24)ND3EO Product code CB228W04200 CB228W04203 Front Grill 01473050 01473050 Cabinet 0143500401P 0143500401P Left Handle 26235401 26235401 Front Side Plate 01305086P 01305086P Electrical Heater (Chassis) 7651000411 7651000411 Chassis Sub-assy 02803280P 02803280P Gas-liquid Separator 07223048 07223048 Compressor and Fittings 0010524501G 0010524501 Electric Heater(Compressor)
- Page 49 Service Manual Part Code Description GWHD(24)ND3FO GWHD(24)ND3GO Product code CB228W07500 CB228W07800 Front Grill 01473050 01473050 Cabinet 0143500401P 0143500401P Left Handle 26235401 02113031 Front Side Plate 01305086P 01305086P Electrical Heater (Chassis) 7651000411 7651000411 Chassis Sub-assy 02803280P 02803280P Gas-liquid Separator 07223048 07223048 Compressor and Fittings 0010524501 0010524501...
-
Page 50: 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. WHD(18)ND3EO GWHD(18)ND3FO GWHD(18)ND3GO Steps Procedure 1.Remove big handle and wire connection cover Before disassembly Remove the screws fixing big handle and right side plate to remove the big handle. - Page 51 Service Manual Steps Procedure 2.Remove top cover top cover Remove the screws fixing top cover, panel and left & right side plate, to remove top cover. 3.Remove grille Remove the screws fixing grille and panel, to remove the grille on the panel. grille 4.Remove panel Remove the screws fixing panel, chassis and motor...
- Page 52 Service Manual Steps Procedure 5.Remove right side plate Remove the screws fixing right side plate, valve support and guard grille, to remove the right side plate. right side plate 6.Remove guard grille Remove the screws fixing guard grille and left side plate to remove guard grille.
- Page 53 Service Manual Steps Procedure 8.Remove condenser support Remove the screws fixing support and chassis, to remove the condenser support. condenser support 9.Remove axial fan blade Remove the screw nuts fixing fan blade with spanner, to remove the fan blade. axial fan blade 10.Remove motor and motor support sub-assy Remove the tapping screws fixing motor, pull out the pin of leading wire for motor and remove the screws...
- Page 54 Service Manual Steps Procedure 11.Remove electric box sub-assy electric box sub-assy Remove the tapping screws fixing isolation sheet, loosen the wire binds, pull out the terminal, lift to remove the electric box sub-assy. 12.Remove PFC electrical inductance Remove the screws fixing PFC electrical inductance and isolation sheet, to remove the PFC electrical inductance.
- Page 55 Service Manual Steps Procedure 14.Remove suction pipe sub-assy Welding cut the welding point jointing the suction pipe sub-assy, compressor and liquid receiver, to remove the suction pipe sub-assy. suction pipe sub-assy 15.Remove liquid receiver Remove the screws fixing isolation sheet and liquid receiver and lift to remove the liquid receiver.
- Page 56 Service Manual Steps Procedure 17.Remove compressor compressor Remove the screw nuts fixing compressor foots and chassis with spanner, as well as the foot cushion, to remove the compressor. 18.Remove valve support assy valve support assy Remove the screws fixing valve support assy and chassis sub-assy, to remove the valve support assy.
- Page 57 Service Manual GWHD(24)ND3EO GWHD(24)ND3FO GWHD(24)ND3GO Steps Procedure 1. Remove valve cover and top panel Twist off the screws used for fixing and valve cover , pull v alve cover up ward to remove it. Remove the 3 screws connecting the top top panel panel with the front panel and the right side plate, and then remove the top panel.
- Page 58 Service Manual Remove the 5 screws connecting the panel with the chassis and the motor support, and then remove the panel. panel 3. Remove right side plate and left side plate right side plate Remove the scre ws connecting the right side plate with the chassis, the valve support and the electric box, and then remove the right side plate assy .
- Page 59 Service Manual 4. Remove fan motor and axial flow blade axial flow blade Remove the nuts fixing the blade and then remove the axial flow blade. fan motor fixing frame Remove the 4 tapping screws fixing the motor; disconnect the leading wire insert of the motor and then remove the motor.
- Page 60 Service Manual 4-way valv e assy 6.Remove soundproof sponge and soundproof sponge Since the piping ports on the soundproof sponge are torn easily, remove the soundproof sponge carefully 4-way valv e assy Discharge the refrigerant completely;unsolder the pipelines connecting the compressor and the condenser assy,and then remove the 4-way valve assy.
- Page 61 Service Manual 8. Remov e Cut off Valve and Valve Support Remove the 2 bolts fixing the valve subassemblies. Unsolder the welding joint connecting the gas valve and the return air pipe. Remove the gas valve. (Note: When unsoldering the soldering joint, wrap the gas valve with wet cloth completely to avoid damage Valve Support to the valve caused by high temperature.)
- Page 62 Service Manual condenser sub-assy 11.Remove condenser sub-assy Remove the chassis sub-assy and condenser sub-assy. chassis sub-assy Installation and Maintenance...
-
Page 63: 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 64: 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 65: 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 (15K) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -2.2 138.1 18.75 138.2 3.848 208.4 1.071 -0.4 128.6 69.8 17.93 3.711 210.2 1.039... - Page 66 Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -2.2 181.4 25.01 138.2 5.13 208.4 1.427 -0.4 171.4 69.8 23.9 4.948 210.2 1.386 162.1 71.6 22.85 141.8 4.773 1.346 153.3 73.4...
- Page 67 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor(50K) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -20.2 853.5 120.2 18.34 190.4 4.754 -18.4 799.8 51.8 93.42 17.65 192.2 4.609 -16.6 53.6 89.07 123.8 16.99 4.469 -14.8 703.8 55.4 84.95 125.6 16.36...
- Page 68 GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI Add: West Jinji Rd, Qianshan, Zhuhai, Guangdong, China 519070 Tel: (+86-756) 8522218 Fax: (+86-756) 8669426 Email: gree@gree.com.cn Http://www.gree.com HONG KONG GREE ELECTRIC APPLIANCES SALES LIMITED Add: Unit 2612,26/F.,Miramar Tower 132 Nathan Road,TST,Kowloon,HK Tel: (852) 31658898 Fax: (852) 31651029...
Need help?
Do you have a question about the GWHDND3EO and is the answer not in the manual?
Questions and answers