Gree GWH18MC-K3NNA2K/I Service Manual Download Page 14

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7HFKQLFDO,QIRUPDWLRQ

Service Manual

5.2 PCB Printed Diagram

No.

Part Name

Control connector COMP of outdoor AC
contactor and control relay K2

Interface of neutral wire

Control interface of indoor fan

Drive capacitor of indoor fan

5 Auto

button

Signal feedback interface of indoor fan

Control interface of swing motor

Control interface of outdoor fan and
control relay K115

Control interface of 4-way valve and
control relay K114

10 Display

interface

Interface of tube temperature sensor

Interface of ambient temperature

sensor

High-frequency transformer T1

Interface of live wire

Top view

Bottom view

GWH18MC-K3NNA2K/I

Summary of Contents for GWH18MC-K3NNA2K/I

Page 1: ...GREE ELECTRIC APPLIANCES INC OF ZHUHAI Change for Life Service Manual GWH18MC K3NNA2K GWH24MD K3NNA2K Refrigerant R410A Model...

Page 2: ...8 5 2 PCB Printed Diagram 11 6 Function and Control 13 6 1 Remote Controller Introduction 13 6 2 Brief Description of Modes and Functions 17 Part Installation and Maintenance 22 7 Notes for Installat...

Page 3: ...Parts List 39 10 1 Indoor Unit 39 10 2 Outdoor Unit 43 11 Removal Procedure 47 11 1 Removal Procedure of Indoor Unit 47 11 2 Removal Procedure of Outdoor Unit 57 Appendix 66 SSHQGL 5HIHUHQFH 6KHHW RI...

Page 4: ...1 7HFKQLFDO QIRUPDWLRQ Service Manual 1 Summary Part Technical Information Indoor Unit GWH18MC K3NNA2K I GWH24MD K3NNA2K I GWH18MC K3NNA2K O GWH24MD K3NNA2K O Remote Controller YB1FA XFAN Outdoor Unit...

Page 5: ...3NNA2K I GWH24MD K3NNA2K I Indoor Unit Product Code CA181N12100 CA181N12000 Fan Type URVV RZ URVV RZ LDPHWHU HQJWK mm Fan Motor Cooling Speed SH H M L SL r min 1350 1200 1050 900 1350 1150 1000 850 Fa...

Page 6: ...mm 809X19X660 821X38 1X660 Fan Motor Speed rpm 780 690 Output of Fan Motor W 68 60 Fan Motor RLA A 0 75 0 58 Fan Motor Capacitor 2 5 3 5 Air Flow Volume of Outdoor Unit m3 K 2800 3200 Fan Type LDO RZ...

Page 7: ...t pipe temperature RI KHDW H FKDQJHU Fan speed of indoor unit Fan speed of outdoor unit Indoor Outdoor P MPa T1 C T2 C 20 15 7 6 18K 2 7 to 3 0 68 to 34 2 to 4 6XSHU LJK LJK 20 15 7 6 24K 2 7 to 3 0 7...

Page 8: ...5 7HFKQLFDO QIRUPDWLRQ Service Manual 3 Outline Dimension Diagram 3 1 Indoor Unit 193 53 694 98 31 55X2 205 117 685 67 90 75 45 70X2 Unit mm W D H Models W H D 18K 940 298 200 24K 1007 315 219 18K 24K...

Page 9: ...6 7HFKQLFDO QIRUPDWLRQ Service Manual 3 2 Outdoor Unit Unit mm GWH18MC K3NNA2K O 549 847 378 300 913 348 680 340 955 700 396 890 860 364 GWH24MD K3NNA2K O...

Page 10: ...Indoor unit Outdoor unit COOLING HEATING 4 Way valve Discharge Suction Heat exchanger evaporator Heat exchanger condenser Valve Valve Liquid pipe side Gas pipe side Strainer Accumlator Compressor Stra...

Page 11: ...Color Symbol Symbol Color Symbol Name WH KLWH GN Green CAP Jumper cap YE Yellow BN Brown COMP Compressor RD Red BU Blue Grounding wire YEGN Yellow Green BK ODFN VT Violet OG Orange 1RWH XPSHU FDS LV...

Page 12: ...9 7HFKQLFDO QIRUPDWLRQ Service Manual GWH24MD K3NNA2K I N L I I I II I 2 4 5 3...

Page 13: ...FDO QIRUPDWLRQ Service Manual GWH18MC K3NNA2K O GWH24MD K3NNA2K O Outdoor Unit INDOOR UNIT 7KHVH FLUFXLW GLDJUDPV DUH VXEMHFW WR FKDQJH ZLWKRXW QRWLFH SOHDVH UHIHU WR WKH RQH VXSSOLHG ZLWK WKH XQLW IN...

Page 14: ...4 Drive capacitor of indoor fan 5 Auto button 6 Signal feedback interface of indoor fan 7 Control interface of swing motor 8 Control interface of outdoor fan and control relay K115 9 Control interface...

Page 15: ...f ambient temperature sensor 4 Fuse 5 Interface of health function live wire 6 Live wire interface 7 Interface of PG feedback 8 Compressor interface 9 Neutral wire interface 10 PG control interface 11...

Page 16: ...ER OFF Button X FAN Button TEMP Button LIGHT Button SLEEP Button CLOCK Button TURBO Button Button 2 6 8 3 9 10 7 5 12 11 4 1 Operation mode Temp display type 1 ON OFF Button 3UHVV WKLV EXWWRQ FDQ WXUQ...

Page 17: ...RP UHPRWH FRQWUROOHU a DQ VSHHG DXWR ORZ VSHHG PHGLXP VSHHG KLJK VSHHG 3 or Button 3UHVV RU EXWWRQ RQFH LQFUHDVH RU GHFUHDVH VHW WHPSHUDWXUH Holding or button 2s later set temperature on remote FRQWUR...

Page 18: ...U GXFW XULQJ IDQ RSHUDWLRQ SUHVV 1 EXWWRQ WR WXUQ RII IDQ IXQFWLRQ QGRRU IDQ ZLOO VWRS RSHUDWLRQ LPPHGLDWHO 9 TEMP Button SUHVVLQJ WKLV EXWWRQ RX FDQ VHH LQGRRU VHW WHPSHUDWXUH LQGRRU DPELHQW WHPSHUDW...

Page 19: ...WKHUH V QR GLVSOD SOHDVH UHSODFH batteries Signal sender Battery Cover of battery box Remove Reinstall IWHU SXWWLQJ WKURXJK WKH SRZHU SUHVV 21 2 EXWWRQ RQ UHPRWH FRQWUROOHU WR WXUQ RQ WKH DLU FRQGLWLR...

Page 20: ...XUH LV 22 Tamb 26 7KH V VWHP RSHUDWHV XQGHU IDQ PRGH LI WXUQ RQ WKH XQLW WR HQWHU LQWR DXWR PRGH IRU WKH UVW WLPH I VZLWFK WR DXWR PRGH IURP FRROLQJ KHDWLQJ RU IDQ PRGH WKH V VWHP NHHSV SUHYLRXV RSHUD...

Page 21: ...DLOV 3 Drying mode Operation condition and process for drying mode KHQ 7DPE 7VHW WKH V VWHP VWDUWV GU LQJ DQG FRROLQJ Q WKLV FDVH WKH FRPSUHVVRU DQG WKH 2 8 IDQ PRWRU RSHUDWH DQG WKH IDU fan motor ope...

Page 22: ...ULQJ RSHUDWLRQ ZKHQ FRQWUROOHU LV GHWHFWHG WKDW 7WXEH WKH 2 8 IDQ PRWRU VWRSV RSHUDWLRQ KHQ 7WXEH LV UHVXPHG QRUPDOO WKH 2 8 IDQ PRWRU UHVXPHV RSHUDWLRQ Noise silencing protection KHQ WXUQLQJ RII WKH...

Page 23: ...RQ WKH V VWHP ZLOO RSHUDWH DFFRUGLQJ XQGHU DXWR PRGH DQG WKH 8 IDQ PRWRU RSHUDWHV DW DXWR VSHHG 6ZLQJ PRWRU RSHUDWHV ZKHQ WKH 8 IDQ PRWRU RSHUDWHV 3UHVV WKLV EXWWRQ DJDLQ WR WXUQ RII WKH XQLW 3 Sleep...

Page 24: ...L HG 3RZHU IDLOXUH ZKHQ WXUQLQJ RII WKH XQLW 0HPRU FRQWHQW 2 VWDWXV PRGH XS GRZQ VZLQJ OLJKW VHW WHPSHUDWXUH VHW IDQ VSHHG JHQHUDO WLPHU DKUHQKHLW HOVLXV General timer can be memorized Time of timer i...

Page 25: ...nit 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 an...

Page 26: ...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 27: ...nt parts Space to the obstruction Space to the wall Space to the obstruction Space to the obstruction At least 50cm At least 200cm At least 30cm At least 30cm Space to the obstruction At least 50cm Dr...

Page 28: ...or unit Make 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 installat...

Page 29: ...QJ ZLWK VSHFLDOL HG JURXQGLQJ GHYLFH E D SURIHVVLRQDO 3OHDVH PDNH VXUH LW LV DOZD V JURXQGHG HIIHFWLYHO RWKHUZLVH LW PD FDXVH HOHFWULF VKRFN 7KH HOORZ JUHHQ ZLUH LQ DLU FRQGLWLRQHU LV JURXQGLQJ ZLUH Z...

Page 30: ...WLRQ RI RXWOHW SLSH 7KH SRVLWLRQ RI SLSLQJ KROH VKRXOG EH D OLWWOH ORZHU WKDQ WKH ZDOO PRXQWHG IUDPH V VKRZ LQ LJ 5 Connect the Pipe of Indoor Unit LP WKH SLSH MRLQW DW WKH FRUUHVSRQGLQJ EHOOPRXWK V V...

Page 31: ...HQ ELQGLQJ WKHP KHQ ELQGLQJ WR D FHUWDLQ GHJUHH VHSDUDWH WKH LQGRRU SRZHU DQG WKHQ VHSDUDWH WKH GUDLQ KRVH V VKRZ LQ LJ LQG WKHP HYHQO 7KH OLTXLG SLSH DQG JDV SLSH VKRXOG EH ERXQG VHSDUDWHO DW WKH HQG...

Page 32: ...ual installation situation 6HOHFW LQVWDOODWLRQ ORFDWLRQ DFFRUGLQJ WR WKH KRXVH VWUXFWXUH L WKH VXSSRUW RI RXWGRRU XQLW RQ WKH VHOHFWHG ORFDWLRQ ZLWK expansion screws 6 Neaten the Pipes 7KH SLSHV VKRXO...

Page 33: ...e Vacuum Pump 5HPRYH WKH YDOYH FDSV RQ WKH OLTXLG YDOYH DQG JDV YDOYH DQG WKH QXW RI UHIULJHUDQW FKDUJLQJ YHQW RQQHFW WKH FKDUJLQJ KRVH RI SLH RPHWHU WR WKH UHIULJHUDQW FKDUJLQJ YHQW RI JDV YDOYH DQG...

Page 34: ...11 times every 3s IDU fan ODU fan compressor and electric KHDW WXEH VWRS RSHUDWLRQ RUL RQWDO ORXYHU VWRSV DW WKH current position 7KH IHHGEDFN WHUPLQDO RI 3 PRWRU LV QRW FRQQHFWHG WLJKWO 7KH FRQWURO...

Page 35: ...loosened or poorly contacted Insert the temperature sensor tightly yes Is malfunction eliminated Is there short circuit due to trip over of the parts Make the parts upright yes Is malfunction elimina...

Page 36: ...tor correctly Is malfunction eliminated no no yes yes Turn on the unit again measure whether the output voltage on control terminal for PG motor is more than 50V within 1 min after the louvers are ope...

Page 37: ...er cap inserted correctly and tightly Replace the jumper cap with the same model End yes yes Assemble the jumper cap with the same model no Is malfunction eliminated no yes Insert the jumper cap tight...

Page 38: ...e unit returns to normal Conclusion U8 is displayed due to instant energization afte de energization while the capacitor discharges slowly The zero cross detection circuit of the mainboard is defined...

Page 39: ...shell too high etc Is the indoor outdoor heat exchanger too dirty or are the air inlet and outlet blocked Normal fluctuation is within 10 of the rated voltage on the nameplate Malfunction is eliminate...

Page 40: ...U details Malfunction of compressor Compressor can t operate 5HIHU WR SRLQW RI PDLQWHQDQFH PHWKRG IRU details 9 3 Maintenance Method for Normal Malfunction 1 Air Conditioner Can t be Started Up 2 Poor...

Page 41: ...DLQ SLSH Replace drain pipe UDSSLQJ LV QRW WLJKW DWHU OHDNLQJ IURP WKH SLSH FRQQHFWLRQ SODFH RI indoor unit ZUDS LW DJDLQ DQG EXQGOH LW WLJKWO 5 Compressor Can t Operate Possible causes LVFULPLQDWLQJ...

Page 42: ...llation and Maintenance Service Manual 10 Exploded View and Parts List 10 1 Indoor Unit 37 35 34 36 1 2 3 4 7 6 5 8 10 11 12 13 14 15 16 17 18 19 20 21 22 23 25 26 28 29 30 31 32 33 27 9 24 GWH18MC K3...

Page 43: ...02 1 13 Evaporator Support 24212133 1 14 Evaporator Assy 01002575 1 15 Wall Mounting Frame 01252218 1 16 Cross Flow Fan 10352019 1 17 Motor Press Plate 26112494 1 18 Fan Motor 15012146 1 19 Pipe Clamp...

Page 44: ...41 Installation and Maintenance Service Manual 38 36 35 34 37 14 12 11 10 13 8 7 5 4 2 28 30 31 32 25 24 23 22 16 26 6 29 27 3 1 9 15 17 18 19 21 20 33 GWH24MD K3NNA2K I...

Page 45: ...Mounting Frame 01252032 1 16 Motor Press Plate 26112330 1 17 Fan Motor 15012098 1 18 Pipe Clamp 26112188 1 19 UDLQDJH KRVH 0523001405 1 20 Step Motor 1521300101 1 21 UDQN 10582070 1 22 Display Board 3...

Page 46: ...43 Installation and Maintenance Service Manual 11 21 23 20 10 9 8 7 6 1 3 4 5 12 13 14 16 17 18 19 22 15 2 GWH18MC K3NNA2K O 10 2 Outdoor Unit...

Page 47: ...1 7 Top Cover 01255001 1 8 Clapboard Sub Assy 01233035 1 9 Electric Box Assy 02613633 1 10 Condenser Assy 01103000303 1 11 Rear grill 014730371 1 12 Capacitor CBB61 33010026 1 13 Capacitor CBB65 33000...

Page 48: ...45 Installation and Maintenance Service Manual 1 2 3 7 9 10 11 12 13 14 15 16 17 18 19 20 23 24 25 26 27 28 29 30 31 32 22 21 4 5 8 6 GWH24MD K3NNA2K O...

Page 49: ...e Sub Assy 07133170 1 13 Cut off Valve 07133157 1 14 Handle 26233053 1 15 Terminal Board 42010194 1 16 AC Contactor 44010245 1 17 Terminal Board 42010194 1 18 Capacitor CBB61 33010010 1 19 Capacitor C...

Page 50: ...H KRUL RQWDO ORXYHU a b Panel Clasp OHIW OWHU DQG ULJKW OHU LOH EXVK 2SHQ WKH SDQHO RRVHQ WKH FODVS VKRZQ LQ WKH ILJ DQG WKHQ SXOO WKH OHIW ILOWHU DQG ULJKW ILOHU RXWZDUGV WR UHPRYH WKHP 3XVK RXW WKH...

Page 51: ...ULF ER FRYHU Electric box cover Screws Panel Front panel Panel rotation Groove 3 Remove panel 4 Remove electric box cover Front case sub assy Front case sub assy Left clasp Middle clasp 5LJKW FODVS Sc...

Page 52: ...e and evaporator 3XOO RXW WKH ZLULQJ WHUPLQDO RI PRWRU DQG ZLULQJ WHUPLQDO RI VWHS PRWRU IURP WKH mainboard Note 1 Location of tube temperature sensor DQG WLHOLQH RQ WKH HYDSRUDWRU LV GLIIHUHQW for di...

Page 53: ...HOHFWULF ER DVV DQG WKHQ UHPRYH WKH HOHFWULF ER DVV Screws Screws Display Screws Connection pipe clamp Evaporator assy Screws Connection pipe 8 Remove evaporator assy W WKH EDFN RI WKH XQLW UHPRYH WKH...

Page 54: ...PRWRU FODPS 5HPRYH WKH VFUHZV DW WKH FRQQHFWLRQ place of cross flow blade and motor lift WKH PRWRU DQG FURVV IORZ EODGH XSZDUGV WR UHPRYH WKHP Motor Screws CURVV RZ c 5HPRYH WKH EHDULQJ KROGHU VXE DV...

Page 55: ...ig and then pull the left filter and right filer outwards to remove them panel rotation groove panel 2 Remove panel Open the front panel separate the panel rotation shaft from the groove fixing the fr...

Page 56: ...ntity of screws fixing the front case sub assy is different for different models Loosen the clasps at left middle and right sides of front case Life the front case sub assy upwards to remove it screw...

Page 57: ...ction place between grounding wire and evaporator Pull out the wiring terminal of motor and wiring terminal of step motor from the mainboard Note 1 Location of tube temperature sensor and tieline on t...

Page 58: ...assy evaporator c Adjust the position of connection pipe on evaporator slightly and then lift the evaporator upwards to remove it connection pipe Remove two screws fixing display Note The display of s...

Page 59: ...otor clamp and then remove the motor clamp Remove the screws at the connection place of cross flow blade and motor lift the motor and cross flow blade upwards to remove them c Remove the bearing holde...

Page 60: ...e screw fixing the handle and then remove the handle 3 Remove top panel and grille Remove screws fixing the top panel and the grille respectively and then remove the top panel and the grille handle sc...

Page 61: ...remove the front panel and the rear guard grille 5 Remove right side plate Remove screws connecting the front panel with the chassis and the motor support and then remove the right side plate 6 Remov...

Page 62: ...tor and the motor support 8 Remove electric box 9 Remove soundproof sponge Remove the soundproof sponge wrapping the compressor Remove the 2 screws fixing the electric box loosen the wire bundle pull...

Page 63: ...g the soldering joint among the 4 way valve the compressor the condenser the gas valve and the liquid valve connected to the compressor at first NOTE Before unsoldering the joints discharge the refrig...

Page 64: ...disassembly Remove the screws connecting the top panel with the front panel and the right side plate and then remove the top panel a Remove the screws connecting the grille and the panel and then rem...

Page 65: ...panel a 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 b Remove the screws connecting the left sid...

Page 66: ...g screws fixing the motor disconnect the leading wire insert of the motor and then remove the motor Remove the 2 tapping screws fixing the motor support and then pull the motor support upwards to r em...

Page 67: ...4 way valve assy Recover the refrigerant before unsoldering Discharge the refrigerant completely unsolder the pipelines connecting the compressor and the condenser assy and then remove the 4 way valve...

Page 68: ...nce Service Manual b Remove the screws connecting the support condenser and condenser assy and then remove the support condenser c Dissemble the chassis sub assy and condenser sub assy support condens...

Page 69: ...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 41 42 41 5 64 65 64 4 18 88 89 87 8 31 43 44 42 8 6 66 67 66 2 19...

Page 70: ...d the pipe according to the following steps XW WKH SLS RQ UP WKH SLSH OHQJWK DFFRUGLQJ WR WKH GLVWDQFH RI LQGRRU XQLW DQG RXWGRRU XQLW XW WKH UHTXLUHG SLSH ZLWK SLSH FXWWHU 5HPRYH WKH EXUUV 5HPRYH WKH...

Page 71: ...58 6 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...

Page 72: ...1 0 983 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...

Page 73: ...3 53 74 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...

Page 74: ...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 Natha...

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