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Gree GWH(07)RA-K3DNA1A/I, Service Manual

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Gree GWH(07)RA-K3DNA1A/I Service Manual Download Page 35

33

Troubleshooting

M alfunction is

eliminated.

No

Yes

     “U8” is
displayed on 
   the unit.

Re-energize 1 
minute after 
de-erergization

       Is“U8”
still displayed?

The zero-cross detection 
circuit of the mainboard is
defined abnormal. Replace 
        the mainboard.

The unit returns to normal. 
Conclusion: U8 is displayed due to
instant energization after de-
energization while the capacitor 
discharges slowly.

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0DOIXQFWLRQRIWKH]HURFURVVGHWHFWLRQFLUFXLWRIWKHPDLQERDUG
6HHWKHÀRZFKDUWEHORZ

9.2.4 U8 Malfunction

Summary of Contents for GWH(07)RA-K3DNA1A/I

Page 1: ...Service Manual GREE ELECTRIC APPLIANCES INC OF ZHUHAI MODEL GWH 07 RA K3DNA1A I GWH 09 RA K3DNA1A I GWH 12 RB K3DNA1A I GWH 18 RC K3DNA1A I...

Page 2: ...QJ 7 3ULQWHG LUFXLW RDUG 8 6 Function and Control 9 5HPRWH RQWURO 2SHUDWLRQV 9 HVFULSWLRQ RI DFK RQWURO 2SHUDWLRQ 13 7 Installation Manual 16 1RWLFHV IRU QVWDOODWLRQ 16 QVWDOODWLRQ UDZLQJ 17 QVWDOO QG...

Page 3: ...atures 1 Summary and Features Indoor Unit Remote Controller GWH 07 RA K3DNA1A I GWH 09 RA K3DNA1A I GWH 12 RB K3DNA1A I GWH 18 RC K3DNA1A I YT1F FAN MODE I FEEL CLOCK TIMER ON X FAN TEMP TIMER OFF TUR...

Page 4: ...FLDOL HG VXEFRQWUDFWRU DV WKHUH LV WKH ULVN RI UH HOHFWULF shock explosion or injury 0DNH VXUH WKH RXWGRRU XQLW LV LQVWDOOHG RQ D VWDEOH OHYHO surface with no accumulation of snow leaves or trash besi...

Page 5: ...RVV RZ IDQ URVV RZ IDQ LDPHWHU HQJWK PP YDSRUDWRU OXPLQXP Q FRSSHU WXEH OXPLQXP Q FRSSHU WXEH 3LSH LDPHWHU PP 5RZ LQ DS PP RLO OHQJWK O KHLJKW FRLO ZLGWK 6ZLQJ 0RWRU 0RGHO 03 03 2XWSXW RI 6ZLQJ 0RWRU...

Page 6: ...U OXPLQXP Q FRSSHU WXEH OXPLQXP Q FRSSHU WXEH 3LSH LDPHWHU PP 5RZ LQ DS PP RLO OHQJWK O KHLJKW FRLO ZLGWK 6ZLQJ 0RWRU 0RGHO 03 03 9 2XWSXW RI 6ZLQJ 0RWRU 1 5 2 XVH 3 15 3 15 6RXQG 3UHVVXUH HYHO G 6 0...

Page 7: ...5 Constrction Views 3 Construction Views R R S S D Q Q Unit mm 12K Unit 07 09K Unit 18K Unit 0RGHO D Q R S 794 264 5 182 51 605 138 848 274 189 130 542 176 945 298 208 57 694 194 R S Q...

Page 8: ...ailable 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...

Page 9: ...7KHVH FLUFXLW GLDJUDPV DUH VXEMHFW WR FKDQJH ZLWKRXW QRWLFH SOHDVH UHIHU WR WKH RQH VXSSOLHG ZLWK WKH XQLW M1 M2 MOTOR SWING optional RD BU GENERATOR COOL PLASMA HEALTH L HEALTH N DISPLAY BOARD RECEIV...

Page 10: ...O ZLUH 3 HDOWK FRQWURO FRQQHFWRU 4 RQWURO FRQQHFWRU RI LQGRRU IDQ 5 5 FDSDFLWRU 6 XWR EXWWRQ 7 8S GRZQ VZLQJ 8 HHGEDFN LQWHUIDFH RI LQGRRU IDQ 9 QWHUIDFH RI MXPSHU FDS 10 LVSOD FRQWURO LQWHUIDFH 11 PE...

Page 11: ...t to set AIR function CLOCK Press it set clock TIMER ON Press it to set auto on timer Press it set swing angle X FAN TEMP TIMER OFF Press it to set auto off timer TURBO SLEEP LIGHT Press it to turn on...

Page 12: ...fan speed setting AUTO Low Med High Your selection will be displayed in the LCD windows except the AUTO fan speed HEALTH icon is displayed when pressing the HEALTH button Press this button again to cl...

Page 13: ...d off the unit After energization X FAN OFF is defaulted X FAN is not available in AUTO FAN or HEAT mode TEMP Press this button could select displaying the indoor setting temperature or indoor ambient...

Page 14: ...ot use old or different types of batteries otherwise it may cause malfunction If the remote controller will not be used for a long time please remove batteries to prevent batteries from leaking The op...

Page 15: ...RII DQG WKH LQGRRU IDQ VWRSSHG EHIRUH LW EORZV UHVLGXDO KHDW 3URWHFWLRQ XQFWLRQ 7KH FRPSUHVVRU VWRSV DV WKH PDOIXQFWLRQ LQFOXGLQJ DQ WHPSHUDWXUH VHQVRU PDOIXQFWLRQ LQ KHDWLQJ PRGH WKH LQGRRU IDQ UXQV...

Page 16: ...LQWHUYDO LV K DQG WKH VHWWLQJ UDQJH LV K 2 Clock Timer 7LPHU 2Q I 7LPHU 2Q LV VHW ZKHQ WKH V VWHP UXQV LW ZLOO FRQWLQXH WR UXQ LI 7LPHU 2Q LV VHW ZKHQ WKH V VWHP LV RII WKH V VWHP ZLOO VWDUW WR UXQ LQ...

Page 17: ...RU IDQ ZLOO RSHUDWH DW KLJK VSHHG ZKLOH RXWGRRU XQLW ZLOO RSHUDWH DW KLJK IUHTXHQF LQ FRROLQJ RU KHDWLQJ PRGH 12 Defrosting Mode Switch I WKHUH LV QR GLVSOD HG WXUQ RQ WKH XQLW ZLWK UHPRWH FRQWUROOHU...

Page 18: ...YDLOV VXFK DV FORVH WR FRDVWDO DUHDV WKH DLU LV FRQWDPLQDWHG ZLWK LQGXVWULDO YDSRXUV DQG RLOV WKH DLU FRQWDLQV VXOSKXUHV JDV VXFK DV LQ KRW VSULQJ RQHV FRUURVLRQ RU SRRU DLU TXDOLW H LVWV 7 1 2 Instal...

Page 19: ...WKLQJ WHUPLQDO 3OHDVH GR QRW FRQQHFW WKH HDUWKLQJ ZLUH ZLWK WKH IROORZLQJ DWHU SLSH DV SLSH RQWDPLQDWLRQ SLSH 2WKHU SODFH WKDW SURIHVVLRQDO SHUVRQQHO FRQVLGHU LV XQUHOLDEOH 7KH PRGHO DQG UDWHG YDOXHV...

Page 20: ...HYHQW WKH VKLIW RI LQVXODWLQJ WXEH 6ODQW WKH GUDLQ KRVH GRZQZDUG VOLJKWO IRU VPRRWK GUDLQDJH RI FRQGHQVDWH Note The insulating tube should be connected reliably with the sleeve outside the outlet pipe...

Page 21: ...H FRQQHFWLRQ SLSH WR LQGRRU XQLW DW UVW DQG WKHQ WR RXWGRRU XQLW DQGOH SLSLQJ EHQGLQJ ZLWK FDUH R QRW GDPDJH WKH FRQQHFWLRQ SLSH QVXUH WKDW WKH MRLQW QXW LV WLJKWHQHG UPO RWKHUZLVH LW PD FDXVH OHDNDJH...

Page 22: ...LUHFWLRQ DQG WKHQ UHPRYH WKH DLU OWHU DV VKRZQ LQ LJ D WWDFK WKH KHDOWK OWHU RQWR WKH DLU OWHU DV VKRZQ LQ LJ E QVWDOO WKH DLU OWHU SURSHUO DORQJ WKH DUURZ GLUHFWLRQ LQ LJ F DQG WKHQ FORVH WKH SDQHO 7...

Page 23: ...21 Exploded Views and Parts List 8 Exploded Views and Parts List 5 1 14 13 12 15 16 17 19 20 21 22 23 25 26 27 28 29 30 31 33 35 36 11 10 9 8 7 6 5 4 3 2 1 34 37 38 39 18 24 40 41 42 32 43...

Page 24: ...001406 1 20 7HPS 6HQVRU VOHHYLQJ 05212423 1 21 YDSRUDWRU VV 0100274301 1 22 YDSRUDWRU 6XSSRUW 24212090 1 23 5HPRWH RQWUROOHU 305100492 1 24 RQQHFWLQJ DEOH 400204056 0 25 DOO 0RXQWLQJ UDPH 01252015 1 2...

Page 25: ...23 Exploded Views and Parts List 5 1 14 13 12 15 16 17 19 20 21 22 23 25 26 27 28 29 30 31 33 35 36 11 10 9 8 7 6 5 4 3 2 1 34 37 38 39 18 24 40 41 42 32 43...

Page 26: ...001406 1 20 7HPS 6HQVRU VOHHYLQJ 05212423 1 21 YDSRUDWRU VV 0100274301 1 22 YDSRUDWRU 6XSSRUW 24212090 1 23 5HPRWH RQWUROOHU 305100492 1 24 RQQHFWLQJ DEOH 400204056 0 25 DOO 0RXQWLQJ UDPH 01252015 1 2...

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

Page 28: ...6512051 1 14 URVV ORZ DQ 10352017 1 15 YDSRUDWRU 6XSSRUW 24212091 1 16 YDSRUDWRU VV 0100274401 1 17 DOO 0RXQWLQJ UDPH 01252021 1 18 0RWRU 3UHVV 3ODWH 26112161 1 19 DQ 0RWRU 150120874 1 20 3LSH ODPS 26...

Page 29: ...27 Exploded Views and Parts List 5 1 2 3 4 5 6 7 8 9 21 18 19 20 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 1 1011 12 13 14 15 16 17...

Page 30: ...VV RI HDULQJ 76512051 1 15 5LQJ RI HDULQJ 26152022 1 16 YDSRUDWRU VV 01002575 1 17 YDSRUDWRU 6XSSRUW 24212100 1 18 3LSH ODPS 2611216401 1 19 0RWRU 3UHVV 3ODWH 26112494 1 20 DQ 0RWRU 15012116 1 21 DOO...

Page 31: ...splay control via remote controller QWHU GLVSOD FRQWURO SUHVV OLJKW EXWWRQ VXFFHVVLYHO IRU WLPHV ZLWKLQ V WR GLVSOD WKH FRUUHVSRQGLQJ PDOIXQFWLRQ FRGH LW GLVSOD FRQWURO SUHVVLQJ OLJKW EXWWRQ VXFFHVVLY...

Page 32: ...nd no no no no yes yes Malfunction is removed no yes yes no Is the wiring terminal between temperature sensor and the controller loosened or poorly contacted Is there short circuit due to tri pover of...

Page 33: ...er cap The mainboard is defined abnormal replace it Yes No Yes End Is the malfunction eliminated Yes No No Yes Replace the jumper cap No Yes Is the malfunction eliminated Is the malfunction eliminated...

Page 34: ...in after the louvers are opened whether the output voltage on the control terminal of the PG motor is over 50V No Yes No Is the malfunction eliminated No Is the malfunction eliminated No No No Yes Yes...

Page 35: ...mal Replace the mainboard The unit returns to normal Conclusion U8 is displayed due to instant energization after de energization while the capacitor discharges slowly 3RVVLEOH FDXVHV 7KH FRQWUROOHU G...

Page 36: ...broken down indoor unit resume normal De energize the unit and check if the connecting wire of indoor and outdoor unit and wiring of electric box are correct Is wire connected correctly Connect wires...

Page 37: ...plate is correct Yes No Check if there is power input between neutral wire and live wire of outdoor unit No Yes End Is malfunction removed Yes No Does communication resume normal Is there power input...

Page 38: ...0 717 60 23 35 9 779 74 2 28 113 0 697 57 18 36 9 382 75 2 206 114 0 678 54 31 37 9 003 76 2 133 115 0 66 51 59 38 8 642 77 2 064 116 0 642 0 49 02 39 8 297 78 1 997 117 0 625 1 46 6 40 7 967 79 1 933...

Page 39: ...0 956 80 31 35 13 04 74 3 04 113 0 93 76 24 36 12 51 75 2 94 114 0 904 72 41 37 12 76 2 844 115 0 88 68 79 38 11 52 77 2 752 116 0 856 0 65 37 39 11 06 78 2 663 117 0 833 1 62 13 40 10 62 79 2 577 118...

Page 40: ...5 49 19 64 10 54 103 3 04 323 9 26 47 08 65 10 18 104 2 955 306 2 27 45 07 66 9 827 105 2 872 289 6 28 43 16 67 9 489 106 2 792 274 29 41 34 68 9 165 107 2 715 259 3 30 39 61 69 8 854 108 2 64 245 6 3...

Page 41: ...es before disassembly e r u d e c o r P s p e t S 1 Before disassembly 2 Remove filter and horizontal louver Open the front panel Push the fi lter inward and then draw itupward to remove it Remove axi...

Page 42: ...indicator and then remove the indicator Remove connection screws between electric box cover 2 and front case Then remove the electric box cover 2 1 Screw 2 4 Remove electric box cover 2 Remove rotati...

Page 43: ...move front case 6 Remove vertical louver Screw Clasp Remove connection screws between front case and rear case Release clasp connecting front case and rear case and then remove the front case Remove 1...

Page 44: ...temp sensor Remove connection screws of electric box assy and rear case Release clasps and remove connection screws of earthing wire and evaporator assy Then remove electric box assy Turn over the re...

Page 45: ...or 9 Remove cross flow fan and motor Remove screws of step motor and then remove the motor Remove 4 connection screws of motor clamp and rear case Then remove motor clamp Remove ring of bearing sub as...

Page 46: ...imum of 10 minutes after turning off all power supplies before disassembly 1 2 2 Remove filter Open the front panel Filter 1 Before disassembly Before disassembly Push the filter upward and then pull...

Page 47: ...de louver 1 2 1 2 Remove the axile bush on the guide louver 4 Remove panel Loosen the screws fixing the display Remove the panel Along the groove fixing front panel slide the rotor shaft outward to re...

Page 48: ...osen the screw of the electric box cover Remove the electric box cover 6 Remove front case Open the screw cap on the front case Remove the screws fixing the front case Loosen the clasps of the front c...

Page 49: ...cal louver Loosen the 10 clasps connecting the verticallouver and bottom case subassembly Remove the vertical louver 8 Remove electric box subassembly Disconnect the indoor tube temperaturesensor Fron...

Page 50: ...lectric box cover and the electric box Remove the electric box cover Loosen the screws fixing the electric box and remove the electric box Screw Ground Wire Electric Box Wiring Terminal of Motor Wirin...

Page 51: ...1 1 2 9 Remove connecting pipe clamp Remove the screw of the connecting pipe clamp Remove the connecting pipe clamp 10 Remove evaporator Remove the screws at the joint of the evaporator and bottom ca...

Page 52: ...ly to separate the connecting pipe and the evaporator Remove the evaporator 11 Remove motor and cross flow fan Remove the screw of the step motor and remove the step motor Remove the screw of the moto...

Page 53: ...assy of Bearing Ring of Bearing Cross Flow Fan Fan Motor Remove the cross flow blade and motor Remove the rubber cushion of the bearing Remove the screws at the joint of the cross flow blade and the m...

Page 54: ...GREE ELECTRIC APPLIANCES INC OF ZHUHAI GG LQML ZHVW 5G 4LDQVKDQ KXKDL XDQJGRQJ KLQD 7HO IWHU VDOH 6HUYLFH HSW 3RVW FRGH...

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