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Gree GWH09NA-K3NNA9C, Service Manual

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Gree GWH09NA-K3NNA9C Service Manual Download Page 50

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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.

Summary of Contents for GWH09NA-K3NNA9C

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Page 4: ...DU DQG HDWXUHV 6XPPDU DQG HDWXUHV 2XWGRRU 8QLW 1 11 2 1 11 2 5HPRWH RQWUROOHU QGRRU 8QLW 1 11 1 11 ON OFF MODE FAN SWING SLEEP TIMER AUTO COOL DRY FAN HEAT T ON T OFF SWING SLEEP LOCK SPEED 1 11 1 11...

Page 5: ...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 lead to overheating a...

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Page 7: ...ORZ 9ROXPH RI 2XWGRRU 8QLW P K DQ 7 SH LDO RZ DQ LDPHWHU PP HIURVWLQJ 0HWKRG XWRPDWLF HIURVWLQJ OLPDWH 7 SH 7 VRODWLRQ 0RLVWXUH 3URWHFWLRQ 3 3HUPLVVLEOH FHVVLYH 2SHUDWLQJ 3UHVVXUH IRU WKH LVFKDUJH 6L...

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Page 10: ...34 35 36 37 38 39 40 41 42 43 44 45 Outdoor temp Capacity ratio 0 20 40 60 80 100 120 15 13 11 9 7 5 3 1 1 3 5 7 9 11 Outdoor temp Capacity ratio Condition Indoor DB27 WB19 Indoor air flow Super High...

Page 11: ...WUXFWLRQ 9LHZV RQVWUXFWLRQ 9LHZV QGRRU 8QLW 2XWGRRU 8QLW 8QLW PP 8QLW PP W D H L2 L L1 Model W H D L L1 L2 790 177 605 35 150 265 12K 255 174 562 27 141 09K 730 L2 L L1 12k 09k 776 257 540 320 286 510...

Page 12: ...IULJHUDQW SLSH GLDPHWHU LTXLG PP DV PP Cooling cycle Indoor unit Outdoor unit Narrow tube Wide tube Capillary tube Narrow tube service valve Wide tube service valve Heat exchanger Heat exchanger Compr...

Page 13: ...BK POWER CONN WIRE 4 OUTDOOR UNIT N1 W2BK W1BU ROOM DISP1 AP1 ROOM DISPLAY FAN MOTOR OFAN EVAPORATOR W5OG W4VT AP2 PRINTED CIRCUIT BOARD TUBE RT2 PIPE TEM SENSOR RT1 TEM SENSOR TRANSFORMER YEGN 5 4V V...

Page 14: ...PV DUH VXEMHFW WR FKDQJH ZLWKRXW QRWLFH SOHDVH UHIHU WR WKH RQH VXSSOLHG ZLWK WKH XQLW TERMINAL BLOCK COMPRESSOR YEGN BU BK BN RD OG INDOOR UNIT BU OG VT BK BU YEGN BK YE BU YEGN 2 PE C2 E PE E R M V...

Page 15: ...G motor control terminal 4 4 way valve control terminal control relay K115 5 Outdoor fan control terminal control relay K114 6 Auto button 7 Up down swing control terminal 8 PG motor feedback terminal...

Page 16: ...re interface 5 4 way valve control terminal and relay K115 6 Outdoor fan control terminal and relay K114 7 Auto button 8 Up down swing control terminal 9 Interface feedback from indoor fan 10 Display...

Page 17: ...tton to increase set temperature Holding it down above 2 seconds rapidly increases set temperature In AUTO mode set temperature is not adjustable Press this button to decrease set temperature Holding...

Page 18: ...ld be kept 1m away from the TV set or stereo sound sets If the remote controller does not operate normally please take the batteries out and replace them after 30 seconds If still not operating proper...

Page 19: ...ve is de energized temperature setting range is 16 30 the indoor unit displays operation icon cooling icon and set temperature Protection Functions Freeze potection If the system is under freeze prote...

Page 20: ...omplete unit will resume its previous running state Upon the condition that the compressor runs for 6 min and stops for 4 min is met and freeze protection is detected the compressor and the outdoor fa...

Page 21: ...s 0 5 24hr Timer OFF can be set under on state of unit If timer OFF reaches the unit is turned off Timing interval is 0 5hr within the range of 0 5 24hr Clock Timer If timer on is set under running st...

Page 22: ...aying ambient temperature ambient temperature will be displayed after setting temperature is displayed for 5s F1 is displayed for ambient temperature sensor malfunction F2 for tube temp sensor malfunc...

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Page 25: ...the wall Air inlet side 300cm Above 250 cm Above 15cm Above 15cm Above 15cm Above 200cm Above 30cm Above 50cm Above 50cm Above 30cm Above The dimensions of the space necessary for proper installation...

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Page 29: ...lectric malfunction or damage the parts Has the unit been securely earthed It may cause electrical leakage Is the power cord specified It may cause electric malfunction or damage the parts Is the inle...

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Page 45: ...QJ DQ RI WKH FLUFXLW SDUWV ZLWKRXW UVW WXUQLQJ RII WKH SRZHU W WLPHV VXFK DV ZKHQ WKH FLUFXLW ERDUG LV WR EH UHSODFHG SODFH WKH FLUFXLW ERDUG DVVHPEO LQ D YHUWLFDO SRVLWLRQ 1RUPDOO GLDJQRVH WURXEOHV D...

Page 46: ...KH FRPSOHWH XQLW VWRSV RSHUDWLRQ 7KH ZLULQJ WHUPLQDO EHWZHHQ LQGRRU HYDSRUDWRU WHPSHUDWXUH VHQVRU DQG FRQWUROOHU LV ORRVHQHG RU SRRUO FRQWDFWHG 7KHUH V VKRUW FLUFXLW GXH WR WKH WULS RYHU RI WKH SDUWV...

Page 47: ...Replace the controller with one ofthe same model End 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 poor ly...

Page 48: ...within 1 min 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...

Page 49: ...rt the jumper 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...

Page 50: ...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 di...

Page 51: ...6 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 2 064 116 0 642 0 49 02 39 8 297 78 1 997 117...

Page 52: ...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 2 663 117 0 833 1 62 13 40 10 62 79 2 577 118 0 811 2 59 08 41 10 2 80 2 495 119 0 77 3 56 19 42 9 803 81 2...

Page 53: ...13 323 9 26 47 08 65 10 18 104 2 955 12 306 2 27 45 07 66 9 827 105 2 872 11 289 6 28 43 16 67 9 489 106 2 792 10 274 29 41 34 68 9 165 107 2 715 9 259 3 30 39 61 69 8 854 108 2 64 8 245 6 31 37 96 7...

Page 54: ...J H VXUH WR ZDLW IRU D PLQLPXP RI PLQXWHV DIWHU WXUQLQJ RII DOO SRZHU VXSSOLHV EHIRUH GLVDVVHPEO 1 2 Step Procedure 1 2 Before disassembly Remove indicator Open front panel Remove screws fixingdisplay...

Page 55: ...to remove the front panel Push filter inwards and then lift it to remove filter Remove horizontal louver Remove 1 screw fixing electric box cover 2 and then removeelectric box cover 2 Remove axle sle...

Page 56: ...sps of front case Then remove front case Remove electric box Loosen clasps of electric box and then remove electric box cover 1 Remove connection screws between electric box and rear case Unplug wirin...

Page 57: ...cting pipe clamp and rear case Then remove connecting pipe clamp Loosen connection screws among evaporator motor clamp and rear case Loosen clasps between evaporator and rear case Slightly adjust pipe...

Page 58: ...Remove cross flow fan blade and motor Remove connection screws between cross flow fan blade and motor shaft Then remove motor Remove holder of bearing ring and then remove connection screws fixing ste...

Page 59: ...O 5HPRYDO 3URFHGXUH RI 2XWGRRU 8QLW 1 Before disassembly 2 Remove big handle Remove the connection screw fixing the big handle and then remove the handle 3 Remove top panel Remove connection screws co...

Page 60: ...assis and the motor support and then remove the front panel Remove connection screws connecting the right side plate with the chassis the valve support and the electric box Then remove the right side...

Page 61: ...upport to remove it 9 Remove electric box Remove screws fixing the electric box subassembly loosen the wire bundle and unplug the wiring terminals Then lift the electric box to remove it 10 Remove iso...

Page 62: ...during unsoldering Remove the 2 screws fixing the gas valve and unsolder the welding point between the gas valve and the air return pipe to remove the gas valve NOTE Discharge the refrigerant complete...

Page 63: ......

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