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Gree GWH18ND-K3NNA2A Service Manual Download Page 67

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(3) Jumper cap malfunction (C5)

C5 is displayed 

on the unit.

Is there jumper cap on the 

controller?

Install a matching 

jumper cap.

No

Is the jumper cap inserted 

incorrectly or improperly?

Re-insert 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 

eliminated?

Summary of Contents for GWH18ND-K3NNA2A

Page 1: ...GREE ELECTRIC APPLIANCES INC OF ZHUHAI Service Manual Change for Life 1 11 1 11 1 11 1 11 1 11 1 11 1 11 1 11 5HIULJHUDQW5 02 6 ...

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Page 5: ...H RQWUROOHU RU DOO PRGHOV H FHSW 1 11 7 RU PRGHO 1 11 1 11 2 1 11 2 ON OFF MODE FAN SWING SLEEP TIMER AUTO COOL DRY FAN HEAT T ON T OFF SWING SLEEP LOCK SPEED FAN MODE I FEEL CLOCK TIMER ON X FAN TEMP TIMER OFF TURBO SLEEP LIGHT 1 11 1 11 ...

Page 6: ...2 1 11 1 11 1 1 11 2 1 11 1 11 1 1 11 2 1 11 1 11 1 1 11 2 1 11 1 11 1 1 11 2 1 11 1 11 1 1 11 2 1 11 1 11 1 1 11 2 1 11 1 11 1 1 11 2 1 11 1 11 1 1 11 2 7 1 11 1 11 1 1 11 2 1 11 1 11 1 1 11 2 membrane decorative strip membrane decorative strip cold plasma cold plasma C panel with fingers protective grille with fingers protective grille ...

Page 7: ... 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 lead to overheating and a possible fire hazard Make sure the outdoor unit is installed on a stable level surface with no accumulation of snow leaves or trash beside Make sure the ceiling wall is strong ...

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Page 18: ...6WDQGDUG SUHVVXUH HDW H FKDQJHU SLSH WHPS QGRRU IDQ PRGH USP 2XWGRRU IDQ PRGH USP QGRRU 2XWGRRU 3 03D 7 7 a LQ a RXW a LQ a RXW a WR LQ WR RXW WR LQ WR RXW WR 7HPSHUDWXUH FRQGLWLRQ 0RGHO QDPH 6WDQGDUG SUHVVXUH HDW H FKDQJHU SLSH WHPS QGRRU IDQ PRGH USP 2XWGRRU IDQ PRGH USP QGRRU 2XWGRRU 3 03D 7 7 a LQ a RXW a LQ a RXW a a LQ WR RXW WR LQ a RXW a 0 20 40 60 80 100 120 15 10 5 0 5 10 Outdoor temp Ca...

Page 19: ... RQVWUXFWLRQ 9LHZV RQVWUXFWLRQ 9LHZV QGRRU 8QLW 2XWGRRU 8QLW 8QLW PP 848 540 320 763 257 540 286 52 694 194 200 940 298 8QLW PP 0RGHO 1 11 2 ...

Page 20: ... RQVWUXFWLRQ 9LHZV 8QLW PP 0RGHO 1 11 2 ...

Page 21: ...PHWHU LTXLG PP DV PP T I N U R O O D T U O T I N U R O O D N I 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 Capillary r e n i a r t S r e n i a r t S ...

Page 22: ...2 25 1 Ɣ QGRRU 8QLW 0RGHOV 1 11 1 11 1 1 11 1 11 1 11 1 11 1 DISP1 AP1 DISP2 DISPLAY BOARD RECEIVER AND TRANSFORMER STEPPING MOTOR L101 N1 YEGN BU BK BU BN POWER M1 FAN MOTOR PG PGF TUBE TEMP ROOM TEMP SENSOR SENSOR TUBE RT1 RT2 ROOM TR IN TC I I I II I AP1 PRINTED CIRCUIT BOARD TR OUT JUMP CAP OUTDOOR UNIT SWING M2 N 1 2 XT 4 5 4V OFAN EARTH PLATE PE PE EVAPORATOR YEGN YEGN VT OG 4 3 K1 BU BK VT ...

Page 23: ...F PG FAN MOTOR M1 L101 STEPPING MOTOR RECEIVERAND DISPLAY BOARD DISP2 AP2 DISP1 0 0 N L DISPLAY DISP1 AP1 DISP2 DISPLAY BOARD RECEIVERAND TRANSFORMER STEPPING L101 M1 FAN MOTOR PG PGF TUBE TEMP ROOM TEMP SENSOR SENSOR TUBE RT1 RT2 ROOM TR IN TC I I I II I AP1 PRINTED CIRCUIT BOARD TR OUT JUMP CAP OUTDOOR UNIT SWING M2 HEALTH L HEALTH N BU RD COOL PLASMAGENERATOR N 1 2 4 5 OG VT BK BU K1 3 4 OG VT ...

Page 24: ...PLAY DISP1 AP1 DISP2 DISPLAY BOARD RECEIVERAND TRANSFORMER STEPPING MOTOR L101 N1 YEGN BU BK BU BN POWER M1 FAN MOTOR PG PGF TUBE TEMP ROOM TEMP SENSOR SENSOR TUBE RT1 RT2 ROOM TR IN TC I I I II I AP1 PRINTED CIRCUIT BOARD TR OUT JUMP CAP OUTDOOR UNIT SWING M2 N 1 2 XT 4 5 4V OFAN EARTH PLATE PE PE EVAPORATOR YEGN YEGN VT OG 3 BU BK BN OG COMP BN VT L 0 0 N L 0RGHO 1 11 0RGHO 1 11 2 ...

Page 25: ... WR WKH RQH VXSSOLHG ZLWK WKH XQLW INDOOR UNIT PE PE YEGN 5YEGN PE PE PE YEGN 1BU 2BU 3YE 4BK 6BK 7BN 8BU 1 0 4 6 BK BU RD BN BU BK BN VT OG VT VT 10WH OG 9BU RELAY BN COMP M KM C T U R M V S W X COMP C1 C2 N 1 2 3 FAN MOTOR XT1 4 5 XT2 TERMINAL BOARD CAP CAP TERMINAL BOARD 4YV 0RGHO 1 11 2 ...

Page 26: ... of indoor fan 5 Control connector of compressor and control relay K2 6 Connector of neutral wire 7 Control connector of indoor fan 8 Neutral wire connector of health function 9 Auto button 10 Control connector of 4 way valve and control relay K114 11 Control connector of outdoorfan and control relay K115 12 Up and down swing control connector 13 Display control connector 14 Current detection circ...

Page 27: ...LQWHUIDFH RI LQGRRU IDQ DSDFLWRU IRU ULYH RI LQGRRU IDQ XWR EXWWRQ 6LJQDO IHHGEDFN LQWHUIDFH RI IDQ RQWURO LQWHUIDFH RI IDQ PRWRU RQWURO LQWHUIDFH RI RXWGRRU IDQ DQG FRQWURO UHOD RQWURO LQWHUIDFH RI ZD YDOYH DQG FRQWURO UHOD QWHUIDFH RI GLVSOD QWHUIDFH RI SLSH WHPS VHQVRU QWHUIDFH RI DPELHQW WHPS VHQVRU LJK IUHTXHQF WUDQVIRUPHU 7 QWHUIDFH RI OLYH ZLUH RI SRZHU VXSSO ...

Page 28: ...r above 2 seconds to rapidly increase set temperature In AUTO mode set temperature is not adjustable This button is used for setting Fan Speed in the sequence that goes from AUTO ˈ ˈ to then back to Auto Press this key to activate or deactivate the swing FAN SWING Press this button to go into the SLEEP operation mode Press it again to cancel this function This function is available in COOL HEAT On...

Page 29: ... set the lamp on or off and send the code After being energized the lamp is defaulted on ƾ 1 Remove the battery cover plate from the rear of the remote controller As shown in the figure 2 Take out the old batteries 3 Insert two new AAA1 5V dry batteries and pay attention to the polarity When replacing the batteries do not use old or different types of batteries If the remote controller will not be...

Page 30: ...unction 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 off the light 1 6 7 5 3 2 4 11 10 14 9 12 13 15 16 17 3 14 9 10 13 16 12 5 4 15 11 8 17 7 2 1 6 8 18 23 24 29 30 31 19 20 21 22 26 28 27 25 MODE icon 18 If MODE button is pressed current operation mode icon AUTO C...

Page 31: ...an 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 clear the display X FAN icon is displayed when pressing the X FAN button Press this button again to clear the display 21 20 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 ON OFF Press this button to turn on the...

Page 32: ... 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 temperature When the indoor unit firstly power on it will display the setting temperature if the temperature s displaying status is changed from other status to displays the ambient temp erature 5s la...

Page 33: ...t 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 operation should be performed in its receiving range It should 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 re...

Page 34: ...ions Freeze protection If the system is under freeze protection the compressor and the outdoor fan stop operation and the indoor fan operates at set speed If freeze protection is eliminated and the compressor has been out of operation for 3 minutes the unit will resume its previous running status 2 1 3 Overcurrent Protection If the system current exceeds the specified value in 3 successive seconds...

Page 35: ...p operation the indoor fan will operate at low speed When freeze protection is eliminated and the compressor has been out of operation for 4 minutes the complete unit will resume its previous running status 2 2 3 Other protection Other protections are the same as those in cooling mode 2 3 Heating mode 2 3 1 Heating conditions and process When Tamb Tpreset 2 the unit starts heating operation In thi...

Page 36: ...FF If timer OFF is set at unit OFF the system will keep standby status If timer OFF is set at unit ON upon OFF time reaches the unit will stop operation Timer Change Although timer has been set the unit still can be turned on off by pressing ON OFF button of the remote controller You can also set the timer once again and then the unit will operate according to the last setting If timer ON and time...

Page 37: ...me models if set temperature display is set by the remote controller current set temperature will be displayed After that when switching to room temperature display from set temperature or outdoor temperature by the remote controller room temperature will be displayed for 5 seconds firstly and then set temperature display returns 3 10 Locked protection to PG motor If the indoor fan motor keeps low...

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Page 39: ...G LQ HG ZLULQJ 1RWH Ɣ 0DNH VXUH WKH OLYH ZLUH QHXWUDO ZLUH DQG HDUWK ZLUH LQ WKH IDPLO SRZHU VRFNHW DUH SURSHUO FRQQHFWHG Ɣ 7KHUH VKRXOG EH UHOLDEOH FLUFXLW LQ WKH GLDJUDP QDGHTXDWH RU LQFRUUHFW HOHFWULFDO FRQQHFWLRQV PD FDXVH HOHFWULF VKRFN RU UH DUWKLQJ 5HTXLUHPHQWV LU FRQGLWLRQHU LV W SH HOHFWULF DSSOLDQFH 3OHDVH HQVXUH WKDW WKH XQLW LV UHOLDEO HDUWKHG 7KH HOORZ JUHHQ ZLUH LQ DLU FRQGLWLRQHU LV...

Page 40: ...o the wall Air outlet side Space to the floor Above Above 15cm Above 15cm Above 30cm Above 50cm Above 50cm Above 30cm Above 200cm Above Above Space to the obstruction Air outlet side Space to the wall Air inlet side Note This is just the schematic plan please refer to the actual product 15cm 250 cm 300cm ...

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Page 42: ...Q WKH IODUH QXW E KDQG DQG WKHQ WLJKWHQ WKH QXW ZLWK VSDQQHU DQG WRUTXH ZUHQFK UHIHUULQJ WR WKH IROORZLQJ 127 RQQHFW WKH 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 N m Ф6 Ф 9 52 Ф 12 31 35 15 20 50 55 Ф 16 60 65 Ф 19 70 75 Hex nut diameter Tigh...

Page 43: ...U PXVW EH SOXJJHG KHWKHU WR SOXJ RWKHU KROHV ZLOO EH GHWHUPLQHG E WKH GHDOHUV DFFRUGLQJ WR DFWXDO FRQGLWLRQV KHFN DIWHU QVWDOODWLRQ DQG 7HVW 2SHUDWLRQ KHFN DIWHU QVWDOODWLRQ Items to be checked Possible malfunction Has the unit been fixed firmly The unit may drop shake or emit noise Have you done the refrigerant leakage test It may cause insufficient cooling heating Is thermal insulation sufficien...

Page 44: ...UHFWLRQ DQG WKHQ UHPRYH WKH DLU OWHU DV VKRZQ LJ D WWDFK WKH KHDOWK OWHU RQWR WKH DLU OWHU DV VKRZQ LJ E QVWDOO WKH DLU OWHU SURSHUO DORQJ WKH DUURZ GLUHFWLRQ LQ LJ F DQG WKHQ FORVH WKH SDQHO Fig a filter Air filter Fig b Fig c Healthy OHDQLQJ DQG 0DLQWHQDQFH 5HPRYH WKH KHDOWK OWHU DQG UHLQVWDOO LW DIWHU FOHDQLQJ DFFRUGLQJ WR WKH LQVWDOODWLRQ LQVWUXFWLRQ R QRW XVH EUXVK RU KDUG REMHFWV WR FOHDQ WK...

Page 45: ...DQG 3DUWV LVW QGRRU 8QLW 0RGHOV 1 11 1 11 31 3 1 29 30 14 12 11 10 13 8 6 4 2 27 32 33 24 23 22 16 25 7 28 26 5 9 15 17 18 19 21 20 34 ON OFF MODE FAN SWING SLEEP TIMER AUTO COOL DRY FAN HEAT T ON T OFF SWING SLEEP LOCK SPEED 35 36 37 38 39 40 ...

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Page 47: ...WV LVW 0RGHO 1 11 32 3 1 31 23 15 13 12 11 14 9 6 4 2 29 33 34 26 25 24 17 27 8 30 28 5 10 16 18 19 20 22 21 35 ON OFF MODE FAN SWING SLEEP TIMER AUTO COOL DRY FAN HEAT T ON T OFF SWING SLEEP LOCK SPEED 36 37 38 39 40 41 7 ...

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Page 49: ...DUWV LVW 0RGHO 1 11 3 1 10 16 18 19 20 22 21 34 14 12 11 9 8 6 4 2 27 32 33 24 23 17 25 7 28 26 5 29 30 31 ON OFF MODE FAN SWING SLEEP TIMER AUTO COOL DRY FAN HEAT T ON T OFF SWING SLEEP LOCK SPEED 13 15 35 36 37 38 39 40 ...

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Page 51: ...VW 0RGHOV 1 11 1 11 SDQHO 31 3 1 29 30 14 12 11 10 13 8 6 4 2 27 32 33 24 23 22 16 25 7 28 26 5 9 15 17 18 19 21 20 34 ON OFF MODE FAN SWING SLEEP TIMER AUTO COOL DRY FAN HEAT T ON T OFF SWING SLEEP LOCK SPEED 35 36 37 38 39 40 ...

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Page 60: ...8 Right Side Plate Assy 0130200404 1 9 Valve 07100004 1 10 Valve 07100006 1 11 Big Handle 26233433 1 12 Valve Support 01713041 1 13 Terminal Board 42010265 1 14 Capacitor CBB65 33010743 1 15 Capacitor CBB61 33010026 1 16 Terminal Board 42011147 1 17 capacitor clamp sub 02143401 1 18 Electric Box Assy 0140383001 1 19 Rear grill 11123205 1 20 Top Cover Plate 01253443 1 21 Condenser Assy 01113359 1 2...

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Page 65: ...is eliminated 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 contacted Is there short circuit due to trip over of the par ts Is the temperature sensor normal according to the Resistance Table Replace it with a temperature sensor of the same model ...

Page 66: ... Mainboard malfunction Replace it No Yes Replace the fan motor End Insert the control terminal tightly Yes No Re energize to turn on the unit measure 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 No Yes Yes Yes Yes Is the control terminal of PG m...

Page 67: ...ler Install a matching jumper cap No Is the jumper cap inserted incorrectly or improperly Re insert 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 eliminated ...

Page 68: ...ute 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 8 0DOIXQFWLRQ ...

Page 69: ...here abnormal sound or oil leakage is the temperature of the shell too high etc no no no no yes no no Replace the control panel End Normal fluctuation is within 10 of the rated voltage on the nameplate yes Malfunction is eliminated no Adjust the supply voltage to maintain it within normal range yes Malfunction is eliminated no Clean the indoor and outdoor heat exchangers and remove the blockage of...

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Page 73: ...QLQJ RII DOO SRZHU VXSSOLHV EHIRUH GLVDVVHPEO 127 7KLV SDUW WDNHV IURQW SDQHO DV H DPSOH 1 2 3 1 1 Remove filter Open the panel Loose the clasps on filter Push the filter inward and pull the filter upwards to remove it 2 Remove guide louver Remove the axial bush on guide louver Panel Clasps Filter Axial bush Steps Procedure ...

Page 74: ...ide Louver 3 Remove panel Push open the rotation shaft at both sides of panel to let it come out of the groove and then remove the panel 4 Remove electric box cover 2 Twist off the 2 screws on electric box cover with screwdriver Rotation shaft Panel Screw Guide Louver Steps Procedure ...

Page 75: ...emove front case Open the screw cap on front case and then twist off the screws on the front case with screwdriver Loosen the clasps at the left middle and right side of front case Remove the front case to separate it from the bottom case Electric boxcover Screw Clasp Front case Left Middle Right Steps Procedure ...

Page 76: ...case 7 Remove electric box Pull out the indoor tube temperature sensor Twist off the screws on electric box with screwdriver Twist off the screws connecting the earthing wire and evaporator with screwdriver Clasp Swing blade Screw Screw Earthing wire Finger protecting grill 3 Remove the Finger protecting grill NOTE Only applicable for units with finger protecting grill Steps Procedure ...

Page 77: ...er and electric box Pull out the plug on motor connection wire Pull out the plug on connection wire of stepping motor Twist off the 2 screws on displayer with screwdriver Remove the electric box to separate it from the bottom case Clasp Plugof stepping motor Screw Electric box Steps Procedure ...

Page 78: ... press board of connection pipe to separate it from the bottom case Screw Auxiliary Piping Heat Exchanger Screw 1 2 3 9 Remove evaporator Twist off the 3 screws connecting the evaporator and bottom case with screwdriver Adjust the pipes on evaporator slightly to separate the connection pipe from the evaporator Remove the evaporator to separate it from the bottom case Steps Procedure ...

Page 79: ...et sub assy of Bearing Ring of Bearing 2 3 4 5 Twist off the screws on motor press plate with screwdriver and then remove the motor press plate Remove the cross flow blade and motor Pull out the shaft rubber cushion block Twist off the screws connecting the cross flow blade and motor with screwdriver and then remove the motor Cross flow blade Motor Cross flow blade Motor Steps Procedure ...

Page 80: ...LQXWHV DIWHU WXUQLQJ RII DOO SRZHU VXSSOLHV EHIRUH GLVDVVHPEO Remove 1 connection screw fixing handle and then remove the handle Remove connection screws among top cover front panel and right side plate 1 Remove big handle 2 Handle 2 Remove top panel Top panel Before disassembly 1 0RGHO 1 11 2 ...

Page 81: ...ction screws among front panel chassis ad motor support Then remove the front panel Removal 6 connection screws among right side plate chassis valve support and electric box Then remove the right side plate 1 2 4 Remove r ight side plate Front grill Front panel Right side plate 3 Remove f ront grill and front panel ...

Page 82: ...ng motor support Finally remove the motor support Remove screws fixing electric box sub assy and loose the wire bundle and unplug wiring terminal Then lift it to remove the electric box 1 2 Motor Motor support Electric box Axial flow fan 5 Remove axial flow fan and motor Remove nuts of axial flow fan and then re move it 6 Remove electric box ...

Page 83: ...t and then remove the sheet Remove sound proof sponge wrapping compressor 8 Remove sound proof sponge 9 Remove magnetic coil Sound proof sponge 7 Removal of isolation sheet Isolation sheet Remove screws of magnetic coil and then remove it Magnetic coil ...

Page 84: ...compressor or any pipe Remove 2 screws of gas valve and unsolder weld point connecting gas valve to air return pipe Then remove the gas valve Note Wrap the gas valve completely with wet cloth before unsoldering to prevent the valve from damage by high temperature Remove screws fixing liq uid valve and unsolder weld point connecting liquid valve to Y type pipe Then remove the liq uid valve 1 Unsold...

Page 85: ...e 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 screw top panel grille 5HPRYDO 3URFHGXUH RI 2XWGRRU 8QLW DUQLQJ H VXUH WR ZDLW IRU D PLQLPXP RI PLQXWHV DIWHU WXUQLQJ RII DOO SRZHU VXSSOLHV EHIRUH GLVDVVHPEO 0RGHO 1 11 2 ...

Page 86: ... 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 Remove axial flow blade Remove nut fixing the blade and then remove the blade panel screws screws rear guard grille right side plate axial flow blade nut screws screws ...

Page 87: ...motor 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 out the wiring terminals and then pull electric box upwards to remove it screws motor support motor electric box assy soundproof sponge ...

Page 88: ...ing 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 refrigerant completely Remove the 3 foot nuts fixing the compressor with wrench and then remove the compressor screw solenoid coil 4 way valve assy nuts compressor gas valve liquid valve ...

Page 89: ...tion sheet and then remove the isolation sheet 13 Remove valve support and condenser Remove screws fixing the valve support and then remove the valve support Remove the screw fixing the condenser and then pull the condenser upwards to remove it screws screws isolation sheet condenser valve support ...

Page 90: ... 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 8669426 E mail gree gree com cn www gree com GREE ELECTRIC APPLIANCES INC OF ZHUHAI ...

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