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Technical Information

Service Manual

Outdoor
Unit

Cross-sectional Area of Power Cable Conductor

mm

2

/

/

Recommended Power Cable(Core)

N

Connection Pipe Connection Method

-

Flare Connection

Flare Connection

Not Additional Gas Connection Pipe Length

m

10

10

Connection Pipe Gas Additional Charge

g/m

20

20

Outer Diameter of  Liquid Pipe(GREE Allocation)
(Metric)

mm

Φ6

Φ6

Outer Diameter of  Gas Pipe(GREE Allocation)
(Metric)

mm

Φ9.52

Φ9.52

Outer Diameter of  Liquid Pipe(GREE Allocation)
(Metric)

mm

Φ6

Φ6

Outer Diameter of  Gas Pipe(GREE Allocation)
(Metric)

mm

Φ9.52

Φ9.52

Connection Pipe Max. Height Distance(indoor and 
indoor)

m

5

5

Max. equivalent connection pipe length(outdoor to 
last indoor)

m

10

10

Connection Pipe Max. Length Distance(total lenght)

m

 20

 20

The above data is subject to change without notice; please refer to the nameplate of the unit.

Summary of Contents for GWHD(14)NK3DO

Page 1: ...GREE ELECTRIC APPLIANCES INC OF ZHUHAI Change for Life Service Manual Models GWHD 14 NK3DO GWHD 18 NK3KO GWHD 21 NK3KO GWHD 24 NK3MO GWHD 28 NK3KO Refrigerant R410A...

Page 2: ...8 2 Installing the Outdoor Unit 31 8 3 Installation Dimension Diagram 32 8 4 Check after Installation 33 9 Maintenance 34 9 1 Precautions before Performing Inspection or Repair 34 9 2 Flashing LED of...

Page 3: ...1 Technical Information Service Manual 1 Summary Part Technical Information Outdoor Unit GWHD 18 NK3KO GWHD 21 NK3KO GWHD 14 NK3DO GWHD 24 NK3MO GWHD 28 NK3KO...

Page 4: ...6233 KSD115O CHPC115 95U1 Throttling Method Electron expansion valve Electron expansion valve Cooling Operation Ambient Temperature Range O C 15 43 18 43 Heating Operation Ambient Temperature Range O...

Page 5: ...ter of Liquid Pipe GREE Allocation Metric mm 6 6 Outer Diameter of Gas Pipe GREE Allocation Metric mm 9 52 9 52 Outer Diameter of Liquid Pipe GREE Allocation Metric mm 6 6 Outer Diameter of Gas Pipe G...

Page 6: ...O CHPC115 95U1 Throttling Method Electron expansion valve Electron expansion valve Cooling Operation Ambient Temperature Range O C 15 43 18 43 Heating Operation Ambient Temperature Range O C 20 24 15...

Page 7: ...as Connection Pipe Length m 10 10 Connection Pipe Gas Additional Charge g m 20 20 Outer Diameter of Liquid Pipe GREE Allocation Metric mm 6 6 Outer Diameter of Gas Pipe GREE Allocation Metric mm 9 52...

Page 8: ...HPC115 95U1 Throttling Method Electron expansion valve Electron expansion valve Cooling Operation Ambient Temperature Range O C 15 43 18 43 Heating Operation Ambient Temperature Range O C 20 24 15 24...

Page 9: ...al Charge g m 20 20 Outer Diameter of Liquid Pipe GREE Allocation Metric mm 6 6 Outer Diameter of Gas Pipe GREE Allocation Metric mm 9 52 9 52 Outer Diameter of Liquid Pipe GREE Allocation Metric mm 6...

Page 10: ...O C HPC115 95U1 Throttling Method Electron expansion valve Electron expansion valve Cooling Operation Ambient Temperature Range O C 15 43 18 43 Heating Operation Ambient Temperature Range O C 20 24 15...

Page 11: ...al Charge g m 20 20 Outer Diameter of Liquid Pipe GREE Allocation Metric mm 6 6 Outer Diameter of Gas Pipe GREE Allocation Metric mm 9 52 9 52 Outer Diameter of Liquid Pipe GREE Allocation Metric mm 6...

Page 12: ...15O C HPC115 95U1 Throttling Method Electron expansion valve Electron expansion valve Cooling Operation Ambient Temperature Range O C 15 43 18 43 Heating Operation Ambient Temperature Range O C 20 24...

Page 13: ...r of Gas Pipe GREE Allocation Metric mm 9 52 9 52 Outer Diameter of Liquid Pipe GREE Allocation Metric mm 6 6 Outer Diameter of Gas Pipe GREE Allocation Metric mm 9 52 9 52 Outer Diameter of Liquid Pi...

Page 14: ...12 Technical Information Service Manual 3 Outline Dimension Diagram 892 341 396 963 560 700 368 2 Models GWHD 18 NK3KO GWHD 21 NK3KO 1 Model GWHD 14 NK3DO Unit mm Unit mm 303 838 550 903 378 596 354...

Page 15: ...13 Technical Information Service Manual 924 370 427 1001 790 399 610 Unit mm 3 Models GWHD 24 NK3MO GWHD 28 NK3KO...

Page 16: ...ger filter filter filter filter C2 C3 D3 D2 B3 B2 A2 A3 A1 A unit electronic expansion valve B1 B unit electronic expansion valve C1 C unit electronic expansion valve D1 D unit electronic expansion va...

Page 17: ...1 3OHDVH GRQ W WRXFK DQ WHUPLQDO ZKHQ WKH YROWDJH RI WHUPLQDO 3 DQG 1 DW 3 LV KLJKHU WKDQ 9 WR SUHYHQW WKH ULVN RI HOHFWULFDO VKRFN 57 57 57 2035 6625 1 7 5 7 1 8 1 3 3527 725 29 5 2 211 725 4 4 97 97...

Page 18: ...03 6 1625 2875220 7 03 6 1625 28778 1 1 1 1 225 81 7 1 225 81 7 2 5 725 3 16 21 7521 7521 3 16 21 3 16 21 7521 8 2 5 9 9 9 20 11 5 1 1 7 7 6 1625 33 5 5 97 97 9 9 9 2035 6625 36 3 8 6 7 35 6685 28778...

Page 19: ...875220 28778 35 6685 6 7 8 3 36 9 9 9 97 97 33 7 6 1625 1 1 20 11 5 9 9 9 5 2 8 7521 3 16 21 3 16 21 7521 7521 3 16 21 5 725 2 3 1 3 1 2 5 725 7 50 1 7HPS 6HQVRU LTXLG 9DOYH DV 9DOYH 7 50 1 2 2 7 50 1...

Page 20: ...6 7 3527 725 29 5 2 203 8 1 5 8 5 8 6 7 57 57 3 9 8 203 3 36 57 1 7 5 2035 6625 9 9 9 211 725 97 97 3 5 5 5 8 8 9 29 203 33 7 6 1625 7 9 9 3 16 21 7521 9 1 1 20 11 5 9 9 9 5 2 8 7521 3 16 21 9 9 3 16...

Page 21: ...1 1 8 1 1 225 81 7 1 1 1 7 50 1 2 7 50 1 2 7 50 1 2 7 50 1 9DOYH DV 1 3 5 725 9 9 3 16 21 7521 7521 3 16 21 9 9 3 16 21 7521 8 2 5 9 9 9 20 11 5 1 1 9 7521 3 16 21 9 9 7 6 1625 33 29 203 9 8 8 5 3 97...

Page 22: ...e protection terminal 5 Terminal of outdoor fan 6 Electric heating terminal of chassis 7 4 way valve terminal 8 Electric heating terminal of compressor 9 Terminal of electronic expansion valve A 10 Te...

Page 23: ...High pressure protection terminal 4 Overload protection terminal of compressor 5 Terminal of temperature sensor 6 Electric heating terminal of chassis 7 Electric heating terminal of compressor 8 Term...

Page 24: ...tarting and then it will run in set speed The fan shall run at every speed for at least 80s When the quantity of running indoor unit is changed the unit will enter the control described in 1 3 5 1 and...

Page 25: ...then compare the mode of the other indoor units to see if there is a conflict Cooling mode dry mode is in conflict with heating mode b Fan mode is in conflict with heating mode and the heating mode i...

Page 26: ...utting through the power 2 8 Compressor Phase lacking Protection When the compressor starts if one of the three phases is detected open the compressor will enter phase lacking protection The malfuncti...

Page 27: ...unit adequately grounded The grounding wire can t be used for other purposes 6 Must apply protective accessories such as protective boards cable cross loop and wire clip 7 The live wire neutral wire...

Page 28: ...ng tape 4 Electroprobe 7 Electronic leakage detector 10 Pipe pliers pipe cutter 2 Screw driver 5 Universal meter 8 Vacuum pump 11 Pipe expander pipe bender 3 Impact drill drill head electric drill 6 T...

Page 29: ...e the bound pipes pass through the wall hole and then connect outdoor unit Neaten the pipes Vacuum pumping and leakage detection Check after installation and test operation Finish installation Note th...

Page 30: ...e the following table Air switch should be included magnet buckle and heating buckle function it can protect the circuit short and overload Caution please do not use the fuse only for protect the circ...

Page 31: ...irings of the unit A unit B unit C and unit D must be corresponding to each other respective The appliance shall be installed in accordance with national wiring regulations Note The above figures are...

Page 32: ...to fixed point have some space The connection pipes and the connectiong wirings of the unit A unit B unit C and unit D must be corresponding to each other respective The appliance shall be installed...

Page 33: ...the 2 way and 3 way valves 2 Unscrew and remove the cap from the service valve 3 Connect the vacuum pump hose to the service valve 4 Operate the vacuum pump for 10 15 minutes until an absolute vacuum...

Page 34: ...hen picking up and moving the units you must be guidedby trained and qualified person Ensure that the recommende dspace is left around the appliance 30cm Space to the cover or above 30cm 50cm Air inle...

Page 35: ...down or the components may be burned out Are the lines and pipelines correctly installed The unit may bread down or the components may be burned out Has the unit been safely grounded Are the models o...

Page 36: ...en remove the cover of electric box cover 2 As shown in the fig below connect the plug of discharge resistance about 100ohm 20W if there is no discharge resistance you can use the plug of soldering ir...

Page 37: ...or ambient temperature sensor is open short circuited Hardware malfunction F1 Indoor evaporator temperature sensor is open short circuited Hardware malfunction F2 Liquid valve temperature sensor is op...

Page 38: ...eration status dd 7 E s u t a t s n o i t a r e p O t c i l f n o c e d o M o F s u t a t s n o i t a r e p O e d o m g n i l c y c e r t n a r e g i r f e R L A s u t a t s n o i t a r e p O n a f X...

Page 39: ...est the resistance between the three phases Reconnect the wire of the compressor according to the correct wiring method If the resistance is normal If the resistance is above 500M Replace the compress...

Page 40: ...Main checking points If the mainboard is broken If the wiring of the induction is connected well and if the induction is broken Flow chart Start Check if power supply is normal Power supply is abnorm...

Page 41: ...ply is abnormal Check if the outdoor induction is broken n o i t c u d n i e h t e c a l p e R n e k o r b s i n o i t c u d n i e h T Replace the outdoor mainboard Malfunction is eliminated End Turn...

Page 42: ...chart Eliminate the malfunction Eliminate the malfunction Eliminate the malfunction Replace the compressor End The unit appears desynchronizing as soon as energizing and starting The stop duration of...

Page 43: ...oor mainboard Replace the outdoor unit Replace the fan capacitor Refrigerant amount is too much Input voltage is normal connected well Check if fan terminal is Improve radiation situation of the unit...

Page 44: ...f the eletric expansion valve is coonected well Replace the overload protector Check the coil of the eletric expansion valve replace it if it is broken Eliminate the malfunction Reconnect according to...

Page 45: ...longer than 3min If the connection wire of the compressor is connected well and correctly Eliminate the malfunction Reconnecttheconnectionwire ofthecompressoraccording to the wiring diagram If the re...

Page 46: ...ether the temperature senspr is normal according to resistance table Replace the temperature sensor with the same model Replace the controller with the same model End Eliminate the malfunction6 6 Temp...

Page 47: ...connection wire of DC fan is connected reliably If it is loose Flow chart Start End Replace the outdoor mainboard If the connection wire of DC fan is loose Check if the outdoor fan is blocked by forei...

Page 48: ...Communication malfunction of some indoor units De energize check if the connection wire of indoor and outdoor unit and the wire of the eletric box is connected correctly Connected correctly Reconnect...

Page 49: ...ording to the wiring diagram Connected correctly Reconnect according to the wiring diagram De energize check if the connection wire between the outdoor mainboard and the filter board according to the...

Page 50: ...onment is good Flow chart Start If the outdoor ambient temperature is above 53 It is a normal protection please operate the unit after the outdoor ambient temperature has changed If the indoor and out...

Page 51: ...for details Malfunction of compressor Compressor can t operate Refer to point 5 of maintenance method for details 9 4 Maintenance Method for Normal Malfunction 1 Air Conditioner Can t be Started Up 2...

Page 52: ...n pipe Replace drain pipe Wrapping is not tight Water leaking from the pipe connection place of indoor unit Wrap it again and bundle it tightly 5 Compressor Can t Operate Possible causes Discriminatin...

Page 53: ...stallation and Maintenance Service Manual 10 Exploded View and Parts List Model GWHD 14 NK3DO CB228W06501 26 27 28 29 30 31 32 The component picture is only for reference please refer to the actual pr...

Page 54: ...07130239 1 13 Cut off Valve 071302391 1 14 Valve cover 22242101 1 15 Big Handle 26233048 1 16 Electric expand valve fitting 43000084 1 17 Electric expand valve fitting 4300008401 1 18 PFC Inductance...

Page 55: ...53 Installation and Maintenance Service Manual Model GWHD 14 NK3DO CB228W06500 25 26 27 28 29 30 31 The component picture is only for reference please refer to the actual product...

Page 56: ...2 Cut off Valve 07130239 1 13 Cut off Valve 071302391 1 14 Valve cover 22242101 1 15 Big Handle 26233048 1 16 Electric expand valve fitting 43000084 1 17 Electric expand valve fitting 4300008401 1 18...

Page 57: ...55 Installation and Maintenance Service Manual Model GWHD 18 NK3KO CB228W06301 The component picture is only for reference please refer to the actual product...

Page 58: ...30239 1 15 Cut off Valve 071302391 1 16 Valve Cover 20123029 1 17 Electric Expand Valve Fitting 43000084 1 18 Electric Expand Valve Fitting 4300008401 1 19 Temperature Sensor 39000073 1 20 Temperature...

Page 59: ...57 Installation and Maintenance Service Manual Model GWHD 18 NK3KO CB228W06300 The component picture is only for reference please refer to the actual product...

Page 60: ...ut off Valve 07130239 1 16 Cut off Valve 071302391 1 17 Valve Cover 20123029 1 18 Electric Expand Valve Fitting 43000084 1 19 Electric Expand Valve Fitting 4300008401 1 20 Temperature Sensor 39000073...

Page 61: ...59 Installation and Maintenance Service Manual Model GWHD 21 NK3KO CB228W06401 38 39 40 41 The component picture is only for reference please refer to the actual product...

Page 62: ...and valve fitting 4300008402 1 18 Electronic Expansion Valve assy 0713395601 1 19 Electric expand valve fitting 4300008401 1 20 Electric expand valve fitting 43000084 1 21 Magnet Coil 4300040045 1 22...

Page 63: ...61 Installation and Maintenance Service Manual Model GWHD 21 NK3KO CB228W06400 38 39 40 41 The component picture is only for reference please refer to the actual product...

Page 64: ...and valve fitting 4300008402 1 18 Electronic Expansion Valve assy 0713395601 1 19 Electric expand valve fitting 4300008401 1 20 Electric expand valve fitting 43000084 1 21 Magnet Coil 4300040045 1 22...

Page 65: ...63 Installation and Maintenance Service Manual Model GWHD 24 NK3MO CB228W06601 The component picture is only for reference please refer to the actual product...

Page 66: ...19 Electric Expand Valve Fitting 4300008402 1 20 Electric Expand Valve Fitting 4300008401 1 21 Electric Expand Valve Fitting 43000084 1 22 Temperature Sensor 3900007306 1 23 Temperature Sensor 390000...

Page 67: ...65 Installation and Maintenance Service Manual Model GWHD 24 NK3MO CB228W06600 The component picture is only for reference please refer to the actual product...

Page 68: ...1314100009P 1 20 Valve Cover 26904100012 1 21 Electric Expand Valve Fitting 4300008402 1 22 Electric Expand Valve Fitting 4300008401 1 23 Electric Expand Valve Fitting 43000084 1 24 Temperature Sensor...

Page 69: ...67 Installation and Maintenance Service Manual Model GWHD 28 NK3KO CB228W06201 The component picture is only for reference please refer to the actual product...

Page 70: ...3 1 20 Electric Expand Valve Fitting 4300008402 1 21 Electric Expand Valve Fitting 4300008401 1 22 Electric Expand Valve Fitting 43000084 1 23 Temperature Sensor 3900007307 1 24 Temperature Sensor 390...

Page 71: ...69 Installation and Maintenance Service Manual Model GWHD 28 NK3KO CB228W06200 The component picture is only for reference please refer to the actual product...

Page 72: ...21 Electric Expand Valve Fitting 4300008403 1 22 Electric Expand Valve Fitting 4300008402 1 23 Electric Expand Valve Fitting 4300008401 1 24 Electric Expand Valve Fitting 43000084 1 25 Temperature Sen...

Page 73: ...gerant completely before removal Step P s rocedure 1 Before disassembly Complete axonometric drawing 2 Remove valve cover Remove the connection screw fixing the valve cover and then remove the valve c...

Page 74: ...p panel and the front panel and then remove the top panel 5 Remove front grille Remove the connection screws connecting the front grille and the front panel and then loosen the clasp to remove the fro...

Page 75: ...d the valve support Then remove the right side plate 8 Remove rear grill Remove the screws connecting the rear grill and left side plate and then remove the rear grill 9 Remove left side plate Remove...

Page 76: ...disconnect the leading wire insert of the motor Then remove the motor Remove the 2 tapping screws fixing the motor support and chassis and then lift the motor support to remove it 12 Remove electric...

Page 77: ...rant completely before unsoldering Remove the screw connecting the valve support and the chassis and then remove the valve support assy Unsolder the welding joint connecting the electronic expansion v...

Page 78: ...ts fixing the compressor and then remove the compressor 17 Remove condenser assy Remove the screws fixing the condenser support and then remove the condenser support Remove the screws connecting the c...

Page 79: ...ove the connection screw fixing the valve cover and then remove the valve cover 3 Remove Coping Remove the connection screws connecting the top panel with the right side plate and the left side plate...

Page 80: ...he front panel and then loosen the clasp to remove the front grille 5 Remove front panel Remove the screws connecting the front panel and then remove the front panel 6 Remove right side plate grille f...

Page 81: ...de plate support Remove the screws connecting the rear grill and the left side plate and then remove the rear grill Remove the screws fixing the left side plate with the chassis and the condenser supp...

Page 82: ...the nut on the blade and then remove the axial flow blade Remove the 4 tapping screws fixing the motor and disconnect the leading wire insert of the motor Then remove the motor Remove the 2 tapping sc...

Page 83: ...induction Unsolder the welding joint connecting the 4 way valve assy with compressor suction and discharge port the valve with the outlet pipe of condenser Then lift the 4 way valve assy to remove it...

Page 84: ...sheet compressor condenser assy Remove the screws connecting the middle isolation sheet with the chassis assy and the condenser assy and then remove the middle isolation sheet Remove the 3 foot nuts...

Page 85: ...er the welding joint connecting the electronic expansion valve sub assy with the gas collection pipe and then remove the electronic expansion valve assy Note when unsoldering wrap the gas valve with a...

Page 86: ...the right side plate and then remove the top panel 2 Remove grille front side plate and panel Remove Remove the 1 screw connecting the front side plate and the panel and then remove the front side pla...

Page 87: ...the panel 3 Remove right side plate and left side plate Remove the screws connecting the right side plate with the chassis the valve support and the electric box and then remove the right side plate a...

Page 88: ...t the wiring terminals and then pull the electric box upwards to remove it Remove the 4 tapping screws fixing the motor disconnect the leading wire insert of the motor and then remove the motor Remove...

Page 89: ...dproof sponge carefully 7 Remove Isolation sheet Remove the 3 screws fixing the isolation sheet and then remove the Isolation sheet isolation sheet Discharge the refrigerant completely unsolder the pi...

Page 90: ...port 10 Remove support support 1 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 unsolderin...

Page 91: ...89 Installation and Maintenance Service Manual 11 Remove condenser sub assy Remove the chassis sub assy and condenser sub assy chassis sub assy condenser sub assy...

Page 92: ...Celsius 32 33 32 0 55 56 55 4 13 79 80 78 8 26 34 35 33 8 1 57 58 57 2 14 81 80 6 27 36 35 6 2 59 60 59 15 82 83 82 4 28 37 38 37 4 3 61 62 60 8 16 84 85 84 2 29 39 40 39 2 4 63 62 6 17 86 87 86 30 4...

Page 93: ...eps A Cut the pip Confirm the pipe length according to the distance of indoor unit and outdoor unit Cut the required pipe with pipe cutter B Remove the burrs Remove the burrs with shaper and prevent t...

Page 94: ...66 88 33 10 63 72 2 439 111 0 737 5 63 46 34 10 2 73 2 358 112 0 717 4 60 23 35 9 779 74 2 28 113 0 697 3 57 18 36 9 382 75 2 206 114 0 678 2 54 31 37 9 003 76 2 133 115 0 66 1 51 59 38 8 642 77 2 06...

Page 95: ...983 5 84 61 34 13 59 73 3 144 112 0 956 4 80 31 35 13 04 74 3 04 113 0 93 3 76 24 36 12 51 75 2 94 114 0 904 2 72 41 37 12 76 2 844 115 0 88 1 68 79 38 11 52 77 2 752 116 0 856 0 65 37 39 11 06 78 2 6...

Page 96: ...62 11 32 101 3 22 15 362 9 24 51 41 63 10 93 102 3 13 14 342 8 25 49 19 64 10 54 103 3 04 13 323 9 26 47 08 65 10 18 104 2 96 12 306 2 27 45 07 66 9 83 105 2 87 11 289 6 28 43 16 67 9 49 106 2 79 10 2...

Page 97: ...d 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 Towe...

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