Gree GWHD(18)NK3FO Service Manual Download Page 2

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Summary of Contents for GWHD(18)NK3FO

Page 1: ...GREE ELECTRIC APPLIANCES INC OF ZHUHAI Service Manual Change for Life 02 1 2 1 2 1 2 1 2 5HIULJHUDQW 5...

Page 2: ...PDWLF LDJUDP OHFWULFDO DWD OHFWULFDO LULQJ 3ULQWHG LUFXLW RDUG HVFULSWLRQ RI DFK RQWURO 2SHUDWLRQ QVWDOODWLRQ 0DQXDO OHFWULFDO RQQHFWLRQV QVWDOOLQJ WKH 2XWGRRU 8QLW QVWDOODWLRQ LPHQVLRQ LDJUDP KHFN DI...

Page 3: ...6XPPDU DQG HDWXUHV 6XPPDU DQG HDWXUHV 2XWGRRU 8QLW 0RGHOV 3URGXFW RGH 1 2 1 2 1 2 1 2...

Page 4: ...repair work shall be performed by your dea ler or a specialized subcontractor as there is the risk of fire electric shock explosion or injury Have all wiring connected tightly Loose connection may lea...

Page 5: ...PSUHVVRU 7KHUPDO 3URWHFWRU 17 7KURWWOLQJ 0HWKRG OHFWURQ H SDQVLRQ YDOYH RROLQJ 2SHUDWLRQ PELHQW 7HPSHUDWXUH 5DQJH 2 a HDWLQJ 2SHUDWLRQ PELHQW 7HPSHUDWXUH 5DQJH 2 a RQGHQVHU 0DWHULDO OXPLQXP LQ FRSSHU...

Page 6: ...17 17 7KURWWOLQJ 0HWKRG OHFWURQ H SDQVLRQ YDOYH OHFWURQ H SDQVLRQ YDOYH RROLQJ 2SHUDWLRQ PELHQW 7HPSHUDWXUH 5DQJH 2 a a HDWLQJ 2SHUDWLRQ PELHQW 7HPSHUDWXUH 5DQJH 2 a a RQGHQVHU 0DWHULDO OXPLQXP LQ FRS...

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Page 8: ...RQVWUXFWLRQ 9LHZV RQVWUXFWLRQ 9LHZV 0RGHO 1 2 8QLW PP 0RGHOV 1 2 1 2 1 2...

Page 9: ...able for 14K 18K model 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 valve A2 A...

Page 10: ...2 7 2 25 1 0RGHO 1 2 5 5 27720 7 21 7 5 287 225 81 7 0 1 02725 9 1 3 2 1 3 3 3 2035 6625 1 7 5 5 5 7 1 9 5 78 57 57 5 78 57 57 20 11 5 8 1 8 8 1 8 1 3 8 1 1 3 3 1 1 1 0DLQ RDUG 3 8 9 5 8 8 5 3 9 8 7 6...

Page 11: ...C and N DC at AP1 is higher than 30V to prevent the risk of electrical shock 6 7 29 203 2 7 50 1 203 1 7 7 1 8 1 8 8 7 1 32 5 1 1 7 6 1625 8 9 3 5 8 8 5 9 8 3 0DLQ RDUG 1 1 1 3 3 1 1 8 8 1 8 8 1 8 20...

Page 12: ...TA 2 XT1 LX2 1 LX2 2 5 5 5 5 5 N1 RT1 RT3 X1 W W V U V U COMP P HPS RT2 AC L N2 3 2 L2 XTC CONNECTOR XTD 2 3 0RGHO 1 2 Please don t touch any terminal when the voltage of terminal P DC and N DC at AP1...

Page 13: ...rminal 5 High pressure protection terminal 6 Low pressure protection terminal 7 Outdoor fan terminal 8 Terminal of chassis electric heating belt 9 4 way valve terminal 10 Terminal of compressor electr...

Page 14: ...ssor electric heater 8 Outdoor fan terminal 9 4 way valve terminal 10 Unit A liquid valve and gas valve temp sensor 11 Unit B liquid valve and gas valve temp sensor 12 Unit C liquid valve and gas valv...

Page 15: ...ing 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 1 3...

Page 16: ...are 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 is the basi...

Page 17: ...ough 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 malfunction will be...

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Page 20: ...SRLQW KDYH VRPH VSDFH 7KH FRQQHFWLRQ SLSHV DQG WKH FRQQHFWLRQJ ZLULQJV RI WKH XQLW XQLW XQLW DQG XQLW PXVW EH FRUUHVSRQGLQJ WR HDFK RWKHU UHVSHFWLYH 7KH DSSOLDQFH VKDOO EH LQVWDOOHG LQ DFFRUGDQFH ZLWK...

Page 21: ...e joints for leaks using liquid soap or an electronic leak device 7 Turn the body of the 2 way and 3 way valves Discon nect the vacuum pump hose 8 Replace and tighten all the caps on the valves INDOOR...

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Page 23: ...t 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 of lines in conformity with requirements...

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Page 31: ...HFWURQLF SDQVLRQ 9DOYH DVV 9DOYH 6XSSRUW VV XW RII 9DOYH XW RII 9DOYH 5LJKW 6LGH 3ODWH 3 3 9DOYH RYHU OHFWULF SDQG 9DOYH LWWLQJ OHFWULF SDQG 9DOYH LWWLQJ OHFWULF SDQG 9DOYH LWWLQJ OHFWULF SDQG 9DOYH L...

Page 32: ...H6 Indoor ambient temperature sensor is open short circuited Hardware malfunction F1 Indoor evaporator temperature sensor is open short circuited Hardware malfunction F2 Liquid valve temperature sens...

Page 33: ...peration status dd Mode conflict Operation status E7 Refrigerant recycling mode Operation status Fo X fan Operation status AL Defrosting or oil return in heating mode Operation status H1 Start failure...

Page 34: ...ases 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 compressor Replace the outdoor mainboard Please...

Page 35: ...cking 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 abnormal yes no...

Page 36: ...er supply is abnormal yes yes yes no no no Check if the outdoor induction is broken The induction is broken Replace the induction Replace the outdoor mainboard Malfunction is eliminated End Turn on th...

Page 37: ...the malfunction Eliminate the malfunction Eliminate the malfunction Replace the compressor End no no no no no no yes yes yes yes yes yes The unit appears desynchronizing as soon as energizing and sta...

Page 38: ...on Replace the outdoor 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 sit...

Page 39: ...If the wiring of 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 Reconn...

Page 40: ...in no no no no no no yes yes yes yes yes yes If the connection wire of the compressor is connected well and correctly Eliminate the malfunction Reconnecttheconnectionwire ofthecompressoraccording to t...

Page 41: ...tion Check whether 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 malfun...

Page 42: ...of DC fan is connected reliably If it is loose Flow chart Start yes yes no no End Replace the outdoor mainboard If the connection wire of DC fan is loose Check if the outdoor fan is blocked by foreig...

Page 43: ...lfunction 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 no no no Connected correctly Reconnect accordi...

Page 44: ...d correctly Connected correctly Reconnect according to the wiring diagram Connected correctly Reconnect according to the wiring diagram De energize check if the connection wire between the outdoor mai...

Page 45: ...low chart Start If the outdoor ambient temperature is above 53 yes yes yes no no no It is a normal protection please operate the unit after the outdoor ambient temperature has changed If the indoor an...

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Page 49: ...ure 1 Before disassembly Complete axonometric drawing 2 Remove valve cover Remove the connection screw fixing the valve cover and then remove the valve cover 3 Remove Coping Remove the connection scre...

Page 50: ...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 front panel righ...

Page 51: ...t 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 support and then re...

Page 52: ...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 screws fixing th...

Page 53: ...lder 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 NOTE Discharge...

Page 54: ...sor 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 fixing the com...

Page 55: ...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 wet cloth com...

Page 56: ...n 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 plate the 2 screws connecting t...

Page 57: ...move 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 assy panel righ...

Page 58: ...rminals 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 the 2 tapping...

Page 59: ...arefully 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 pipelines connect...

Page 60: ...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 co...

Page 61: ...5HPRYDO 3URFHGXUH 11 Remove condenser sub assy Remove the chassis sub assy and condenser sub assy chassis sub assy condenser sub assy...

Page 62: ...the product specification and appearance in this manual without notice and without incurring any obligations Add West Jinji Rd Qianshan Zhuhai Guangdong China 519070 Tel 86 756 8522218 Fax 86 756 8669...

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