Gree GWC18KG-D3DNA5A Page 75 Service Manual Download

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Twist off the 2 screws fixing the
damper, and then remove the
damper.
Twist off the 2 screws fixing the
valve cover, push it downward
and then remove the valve cover.

Damper

Valve cover

Summary of Contents for GWC18KG-D3DNA5A

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Page 4: ... IHDWXUHV QGRRU 8QLW 1 1 1 1 2XWGRRU 8QLW 1 2 1 2 1 2 1 2 5HPRWH FRQWURO ZLQGRZ FAN AUTO OPER HEALTH AIR FILTER TURBO ON OFF X FAN HOUR HUMIDITY ON OFF MODE FAN X FAN TURBO TEMP TIMER SLEEP LIGHT 1 1 1 1 1 1 1 1 ON OFF ON OFF ON OFF ...

Page 5: ...ion of snow leaves or rubbish The unit should be installed according to the instructions in order to minimize the risk of damage from earthquake typhoon or strong wind When the refrigerant touches the fire etc it was decomposed and poisonous gas is will be generated Use only the specified refrigerant to charge the refrigerant circuit Do not mix it with any other refrigerant and do not allow air to...

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Page 11: ...50 40 30 Indoor side noise when blowing Indoor fan motor rotating speed Low Middle High Noise dB A 40 42 44 46 48 50 52 54 20 40 30 50 60 70 80 90 Compressor frequency Hz Noise dB A Heating Cooling 24K 18K 7HPSHUDWXUH FRQGLWLRQ 0RGHO QDPH 6WDQGDUG SUHVVXUH HDW H FKDQJHU SLSH WHPS QGRRU IDQ PRGH 2XWGRRU IDQ PRGH RPSUHVVRU Frequency Hz QGRRU 2XWGRRU 3 03D 7 7 WR WR WR 6XSHU LJK LJK 70 WR WR WR 6XSHU...

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Page 13: ...LVE COOLING HEATING Accumlator Discharge Suction Muffler 4 Way valve Capillary Strainer Strainer 5HIULJHUDQW SLSH GLDPHWHU LTXLG PP DV PP INDOOR UNIT OUTDOOR UNIT HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER COMPRESSOR GAS SIDE 3 WAY VALVE LIQUID SIDE 2 WAY VALVE COOLING Accumlator Discharge Suction Muffler Capillary Strainer Strainer RROLQJ 2QO 0RGHOV RROLQJ HDWLQJ 0RGHOV ...

Page 14: ...CONDENSER COMPRESSOR GAS SIDE 3 WAY VALVE LIQUID SIDE 2 WAY VALVE COOLING Accumlator Discharge Suction Muffler Strainer Strainer Expansion valve INDOOR UNIT OUTDOOR UNIT HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER COMPRESSOR GAS SIDE 3 WAY VALVE LIQUID SIDE 2 WAY VALVE COOLING HEATING Accumlator Discharge Suction Muffler 4 Way valve Strainer Strainer Expansion valve ...

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Page 16: ... prevent the risk of electrical shock voltage of terminal P DC and N DC at L1 L2 2XWGRRU 8QLW T SENSOR 6YEGN AC L N 14YEGN 10BU PE 9BN 11BK AP1 XT 3 2 N 1 COMP W COMP V COMP U 16BU 15YE 17RD R S C T E PE PE COM INNER 1 0 RT1 0 RT2 RT3 0 4V M L INDC1 1YE 2BU 3RD 12WH PE OFAN OVC COMP 5WH 4WH SAT YEGN 13OG INDC2 COMP TEM SENSOR EXHAUST TEM SENSOR OUTROOM TEM SENSOR OUTTUBE INDOOR UNIT PE L1 L2 8BN 7...

Page 17: ...Neutral line connects the terminal of copper pin Auxiliary relay K1 K2 Supply power for outdoor unit s control relay K4 Connect to the copper pin of communication line of outdoor unit Filter SF2022A 05220 Rectifier DB1 High frequency transformer T1 Connect the terminal of diaplay board DISP1 DISP2 Ambient temperature sensor terminal Tube temperature sensor terminal Health relay K3 ...

Page 18: ... 6FKHPDWLF LDJUDP 27720 9 ...

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Page 20: ...5 R78 U8 R116 R3 C9 C8 R4 R76 C36 C29 C30 D14 R79 R73 Q1 D4 C23 Q9 R123 R125 R71 R114 D17 C42 C37 C370 D290 D31 R11 Q5 Q6 C39 C35 R74 R72 C40 D32 U9 R36 R129 R21 R121 POWER C21 D8 C51 C52 D7 C49 C50 R81 R66 R65 R173 R64 R91 R6 C47 C48 C41 U10 D29 C44 R143 R141 R175 R62 R144 R171 C81 C22 C43 C110 C59 C136 C11 R117 D15 R25 U24 D43 R23 R163 R13 R16 C26 R1 C56 C58 C55 R124 R50 C31 D9 U3 R159 R35 R132 ...

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Page 22: ...FAN HEALTH SAVE Press it to set up down swing angle TIMER X FAN TEMP TURBO SLEEP LIGHT Press it to set fan speed Press it set auto on timer auto off timer 1 2 Press it to select health mode on or off 7 4 3 5 6 Press it to set left right swing angle Note X FAN or BLOW same function different name 8 11 9 10 12 13 14 FAN AUTO OPER HEALTH AIR FILTER TURBO ON OFF X FAN HOUR HUMIDITY ON OFF MODE FAN X F...

Page 23: ...er defaults to simple swing condition Press button and button at the same time at unit OFF to switch between simple swing and static swing blinking 2 seconds In static swing condition press button the swing angle of up down louver changes as below After energization AUTO mode is defaulted In AUTO mode the set temperature will not be displayed on the LCD and the unit will automatically select the s...

Page 24: ...changes time setting time setting range 0 5 24hours Press TIMER button again to confirm setting HOUR ON OFF stopping blink If there is not any operation of button within 5 seconds during HOUR ON OFF blinking TIMER setting will be canceled X FAN TEMP TIMER TURBO 9 10 11 If the unit is turned off during swing operation the louver will stop at present position 12 Press this button to activate deactiv...

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Page 33: ...e drain port and then mount it If the drain hose is not connected properly leaking will occur Attach the Insulation Drain hose to the drain hose CAUTION Indoor unit tubing Flare nut Pipes Wrench Indoor unit tubing Open end wrench fixed Connection pipe Flare nut mm inch kg m Ø6 35 1 4 1 8 Ø9 52 3 8 4 2 Ø12 7 1 2 5 5 Ø15 88 5 8 6 6 Ø19 05 3 4 6 6 Outside diameter Torque Shield pipe Extension drain h...

Page 34: ...n the drain hose and drain cap be sure to insert securely and vertically Incline inser tion will cause water leakage 2 When inserting be sure not to attach any material besides water If any other material is attached it will cause deterioration and water leakage 3 After removing drain hose be sure not to forget mounting drain cap 4 Be sure to fix the drain hose with tape to the bottom of piping 5 ...

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Page 44: ... 7URXEOHVKRRWLQJ RZ WR KHFN VLPSO WKH PDLQ SDUW QGRRU XQLW 7HPSHUDWXUH VHQVRU PDOIXQFWLRQ Start the troubleshooting of temperature sensor malfunction ...

Page 45: ...he malfunction yes no Insert the control end of PG motor tightly no Eliminate the malfunction no Pull the blade by hand to see whether the blade can rotate smoothly Re assemble the blade and motor correctly Eliminate the malfunction no no yes yes Turn on the unit after re energization measure whether the output voltage on control end for PG motor is more than 50V no yes yes Whether the motor is st...

Page 46: ...rted correctly and tightly Replace the jumper cap with the same model End no yes Please install the correct jumper cap yes Eliminate the malfunction no yes Insert the jumper cap tightly Eliminate the malfunction no no yes Eliminate the malfunction Replace the control panel no yes Start the troubleshooting of C5 malfunction Start the troubleshooting of U8 malfunction ...

Page 47: ...7URXEOHVKRRWLQJ Test Test 2 Test 3 Test 4 Test 5 Test 6 Test 7 Tset 8 Test 9 GND Test 10 C A B D E F G H I J K L M Test 11 N O P QR Test 16 Test12 Test13 Test14 Test15 S T 2XWGRRU XQLW H GHWHFWLRQ SRLQW ...

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Page 50: ... 203 LV ZHOO FRQQHFWHG I WKH DUH ORRVHQHG I WKH FRQQHFWLRQ VHTXHQFH LV FRUUHFW V YROWDJH LQSXW LQ WKH QRUPDO UDQJH 7HVW WKH YROWDJH EHWZHHQ 1 RI ZLULQJ ERDUG 7 E YROWDJH PHWHU I FRLO UHVLVWDQFH RI FRPSUHVVRU LV QRUPDO V FRPSUHVVRU FRLO LQVXODWLQJ WR FRSSHU SLSH ZHOO I WKH ZRUN ORDG RI XQLW LV KHDY I UDGLDWLQJ RI XQLW LV ZHOO I WKH UHIULJHUDQW FKDUJLQJ LV DSSURSULDWH 0DOIXQFWLRQ GLDJQRVLV SURFHVV ...

Page 51: ... 7URXEOHVKRRWLQJ End ...

Page 52: ... terminal OFAN is connected well 2 Test if resistance value of any two terminals is less than 1kƻ with ohmic meter If the indoor and outdoor fan work well After the unit de energized for 20min Replace control board AP1 If the radiating of outdoor and indoor unit is well Improve the radiating environment of unit Replace outdoor fan Y Replace fan capacitor C1 Anti high temperature overload protectio...

Page 53: ...well connected and connection sequence is correct Replace control board AP1 Replace the compressor If malfunction is removed If the stop time of compressor is more than 3min N If the stop time is not enough and the high and low pressure of system is not balance please start it after 3min Improve the connection situation of control board AP1 and compressor COMP connect it with wiring diagram N Y N ...

Page 54: ...y If the stop time of compressor is more than 3min Synchronism after energize the unit and start it Connect wire well Synchronism occurred during operation Replace control board AP1 If the radiating of unit is well Remove malfunction Improve the radiating of unit clean heat exchanger and increase ventilation Replace fan capacitor C1 Replace outdoor fan Y N N N Y Y N Replace control board AP1 Remov...

Page 55: ... electron expansion valve If the wiring terminal FA of electron expansion is well connected Remove malfunction The resistance value of first 4 l ead foot an d th e fifth lead foot is similar less than 100 ƻ After the unit de energized for 20min Remove malfunction Y N N N If the overload protector SAT is well connected N Under ambient temperature test the resistance of overload protector with ohmic...

Page 56: ...hort circuit and replace it Y Re energize the unit and start it Cut the terminal of reactor test the resistance between two terminals of reactor with ohmic meter Replace the reactor Re energize the unit and start it Check the connection wire of reactor L of outdoor unit and PFC capacity If there is damaged short circuit Replace connection wire with circuit diagram Replace control board AP1 Y N N Y...

Page 57: ...nication circuit of outdoor unit Problem of communication circuit Check built in wiring of indoor and outdoor unit Connection correct Malfunction of circuit is detected with control board AP1 voltage Check connection wire of indoor and outdoor unit with circuit diagram Check connection wire of indoor and outdoor unit with circuit diagram If the unit is operation normal before malfunction Y N Y N I...

Page 58: ...ng Outdoor unit malfunction Test voltage value with Test 15 position in diagram with voltage meter Number jumping Test voltage value with Test 11 position in diagram with voltage meter Number jumping Test voltage value with Test 12 position in diagram with voltage meter Y Y Y Y Number jumping The circuit of outdoor unit communication is normal Y N N N N End ...

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Page 61: ... 7URXEOHVKRRWLQJ SSHQGL 5HVLVWDQFH 7DEOH RI 2XWGRRU LVFKDUJH 7HPSHUDWXUH 6HQVRU 7HPS ć 5HVLVWDQFH N ǂ 7HPS ć 5HVLVWDQFH N ǂ 7HPS ć 5HVLVWDQFH N ǂ 7HPS ć 5HVLVWDQFH N ...

Page 62: ... n e p O n e p O with charging cylinder n e p O n e p O n e p O with charging cylinder n e p O n e p O n e p O n e p O Works Shipping Air purging Installation Operation Pumping down Transfering Evacuation Servicing Gas charging Servicing Pressure check Servicing Gas releasing Servicing 1 2 3 4 5 6 Valve cap Open position Closed position Pin Service port Service port cap To outdoor unit Flare nut T...

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Page 69: ...WRQ LV NHSW pressing IRU VHFRQGV D IRUFHG FRROLQJ RSHUDWLRQ ZLOO EH FDUULHG RXW IRU DS SUR PLQXWHV Ƶ 3XOO SURWUXVLRQV RQ OHIW DQG ULJKW VLGHV RI SDQHO ZLWK QJHUV DQG RSHQ IURQW SDQHO DOO WKH ZD LIW FHQWHU VHFWLRQ RI DLU OWHU DQG GLVHQJDJH the claspV HIW DQG ULJKW OWHUV DUH LQWHUFKDQJHDEOH Ƶ 7R UH LQVWDOO LQVHUW DLU OWHU DORQJ WKH JXLGH louver Ƶ 5HPRYH DLU OWHU E SXOOLQJ it IRUZDUG LU OWHU ClaspV O...

Page 70: ...DQG ULJKW OWHUV DUH LQWHUFKDQJHDEOH Ƶ 7R UH LQVWDOO LQVHUW DLU OWHU DORQJ WKH JXLGH louver Ƶ RRN D QJHU RQWR WKH SURMHFWLRQ SDUW SURYLGHG RQ WKH ERWK VLGHV RI WKH XQLWV SDQHO DQG RSHQ XS WKH SDQHO WR WKH SRVLWLRQ KLJKHU WKDQ LW ZLOO VWRS 5HPRYH WKH IURQW SDQHO IURP WKH XQLW XLGH lRXYHU Draw out the axial bush Bend the guide louver slightly and then remove it axial bush ...

Page 71: ... at WKH OHIW DQG right side Twist off WKH VFUHZV LQ WKH ULJKW DQG left side fixing WKH PDLQ ERG and then remove WKH IURQW JULOOH Ƶ LVHQJDJH WKH clasps E SUHVVLQJ NQREV ZLWK D VFUHZGULYHU LVHQJDJH WKH clasps RQ WKH XSSHU SDUW Q FDVH WKDW WKH clasps DUH QRW SUHVVHG IURP DERYH UHPRYH WKH IURQW SDQHO DQG WKHQ UHPRYH WKH JULOOH ZKLOH SXVKLQJ WKH clasps WKURXJK D FOHDUDQFH EHWZHHQ WKH IURQW JULOOH DQG W...

Page 72: ...ZLVW RII WKH HDUWKLQJ VFUHZ LQJ WKH HYDSRUDWRU 3XOO RXW DOO WKH ZLULQJ WHUPLQDOV 3D DWWHQWLRQ WR WKH GLUHFWLRQ RI WKH UHWDLQHU RI WKH WKHUPLVWRU VR WKDW WKH UHWDLQHU ZLOO QRW WRXFK WKH KDUQHVV VDPH DV WKH H LVWLQJ PRGHOV 7HUPLQDO ERDUG RQQHFWLon ZLUHV HDW H FKDQJHU WKHUPLVWRU Twist off D VFUHZ RQ WKH HOHFWULF ER Not to loose the clip of thermistor ...

Page 73: ...XUH 3RLQWV 5HPRYH SLSLQJ WXUH 5HPRYH the pLSH cODPS RRVHQ WKH VFUHZV at WKH ULJKW DQG OHIW side IL ing WKH eYDSRUDWRU aVV and then remove evaporator X LOLDU SLSLQJ 3LSLQJ WXUH GMXVW WKH SLSHOLQH VOLJKWO X LOLDU SLSLQJ HDW H FKDQJHU ...

Page 74: ... 6KDIW FXVKLRQ UXEEHU Elock Twist off the screws fixing the motor press plate and then remove the motor press plate Remove the motor blade and shaft cushion rubber Twist off the screws on cross flow blade and then pull out the motor screw 10 Remove guard grille Loosen the clasps and then remove the guard grille guard grille ...

Page 75: ...RYHU DQG KDQGOH 7ZLVW RII WKH VFUHZV XVHG IRU LQJ WKH KDQGOH and SXOO WKH KDQGOH XSZDUG WR UHPRYH LW CPFNG 7RS SDQHO 7ZLVW RII WKH VFUHZV XVHG IRU LQJ WKH WRS FRYHU and pull WKH WRS FRYHU XSZDUG WR UHPRYH LW Twist off the 2 screws fixing the damper and then remove the damper Twist off the 2 screws fixing the valve cover push it downward and then remove the valve cover Damper Valve cover ...

Page 76: ...PRYH WKH SDQHO 5HPRYH SDQHO 7ZLVW RII WKH VFUHZV LQJ WKH ULJKW VLGH SODWH DQG HQG SODWH RI FRQGHQVHU DQG YDOYH VXSSRUW SXOO LW XSZDUG DQG WKHQ UHPRYH WKH ULJKW VLGH SODWH VXE DVV TQPV RCPGN KHV VJG HTQPV RCPGN CPF TGOQXG KV YJKNG RWUJKPI VJG TKIJV UKFG RCPGN KPYCTFU 5VGR pTQEGFWTG pQKPVU Ƶ 5HPRYH ULJKW VLGH SODWH 5LJKW sLGH pODWH Guard gULOO Twist off the screws fixing the guard grille and then re...

Page 77: ...r compressor temperature sensor reactor and wiring terminal of capacitor twist off the earthing screws on the side wiring terminal and the 5 screws fixing the main board and then remove the main board Twist off the screws fixing the electric box cover and then pull the electric box upward to remove it Twist off the screws on fireproof electric box and then remove the fireproof electric box firepro...

Page 78: ...XW IL LQJ WKH EODGH ZLWK ZUHQFK DQG WKH GUDZ RXW WKH D LDO ÀRZ blade ZKCN fNQY blade 5HPRYH WKH D LDO ÀRZ blade Twist off the screws fixing the reactor and then remove the reactor twist off the screws fixing the capacitor clamp and then remove the capacitor Twist off the 4 screws fixing the motor and then remove the motor Twist off the 4 screws fixing the motor support and then remove the motor su...

Page 79: ...QORTGUUQT VGTOKPCNU QT VJG PCOG RNCVG Ƶ QQN only GHQTG YQTMKPI OCMG UWTG VJCV VJGre s no refrigerant KP VJG EKTEWKV Ƶ 2TQXKFG C RTQVGEVKXG UJGGV QT C UVGGN RNCVG UQ VJCV VJG DTC KPI ƀCOG ECPPQV affect RGTKRJGTKGU Ƶ DXWLRQ H FDUHIXO DERXW WKH 4 ZD YDOYH SLSHV DQG VR RQ ZKLFK ZHUH KHDWHG XS E D JDV EUD LQJ PDFKLQH VR DV QRW WR EXUQ out RXU KDQGV GCV RWOR ZD 9DOYH 8 Remove suction pipe and discharge ...

Page 80: ...WKH YDOYH VXSSRUW 9DOYH VXSSRUW OHFWURQLF H SDQVLRQ YDOYH FRLO OHFWURQLF H SDQVLRQ YDOYH 5HPRYH WKH HOHFWURQLF H SDQVLRQ YDOYH FRLO HDW XS WKH WZR EUD HG SDUWV RI WKH HOHFWURQLF H SDQVLRQ YDOYH DQG GLVFRQQHFW 9DOYH 5HPRYH FRPSUHVVRU 5HVSHFWLYHO XQVROGHU WKH ZHOG VSRWV RI PDLQ FDSLOODU DQG DX LOLDU FDSLOODU WR WDNH RII WKH FDSLOODU Remove capillary or electric expansion valve Capillary ...

Page 81: ... GG LQML ZHVW 5G 4LDQVKDQ KXKDL XDQJGRQJ KLQD 7HO IWHU VDOH 6HUYLFH HSW 3RVW FRGH 5 75 33 1 6 1 2 8 ...

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