Gree GWH18RC-K3DNA1A Service Manual Download Page 75

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Remove the front case.

7. Remove the vertical louver

Loosen the 10 clasps connecting the vertical

louver and bottom case subassembly.

Remove the vertical louver.

8. Remove the electric box subassembly

Disconnect the indoor tube temperature

sensor.

front case

clasps

vertical louver

temperature sensor

Summary of Contents for GWH18RC-K3DNA1A

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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 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 enough to bear the...

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Page 12: ... r u C 11 10 9 8 7 6 5 4 3 2 1 0 Compressor speed rps A t n e r r u C Conditions Indoor DB27 C WB19 C Outdoor DB35 C Indoor air flow Super High Pipe length 5m Conditions Indoor DB20 C Outdoor DB7 C WB6 C Indoor air flow Super High Pipe length 5m 220V 230V 240V 220V 230V 240V 0 10 20 30 40 50 60 70 90 0 10 20 30 40 50 60 70 80 90 100 120 110 80 11 10 9 8 7 6 5 4 3 2 1 0 Compressor speed rps A t n e...

Page 13: ...43 15 10 5 0 5 7 10 40 41 42 100 105 95 90 85 80 75 70 65 60 55 50 C p m e t r o o d t u O C p m e t r o o d t u O o i t a r y t i c a p a C 110 100 90 80 70 60 50 40 o i t a r y t i c a p a C Conditions Indoor DB20 C Indoor air flow Super High Pipe length 5m Conditions Indoor DB20 C WB19 C Indoor air flow Super High Pipe length 5m Super High Super High Super High Super High Super High Super High ...

Page 14: ...side noise when blowing Indoor fan motor rotating speed Low Middle High 40 42 44 46 48 50 52 54 20 40 30 50 60 70 80 90 Compressor frequency Hz Noise dB A Noise dB A Heating Cooling 24K 18K 1RLVH ULWHULD XUYH 7DEOHV IRU ERWK 0RGHOV ...

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Page 17: ...Narrow tube service valve Wide tube service valve Heat exchanger Heat exchanger Compressor Heating cycle 4 way valve Accumlator Strainer Strainer Capillary tube Cooling cycle Indoor unit Outdoor unit Narrow tube Wide tube Expansion valve Narrow tube service valve Wide tube service valve Heat exchanger Heat exchanger Compressor Heating cycle 4 way valve Accumlator Strainer Strainer 0RGHOV 0RGHOV ...

Page 18: ...OMPRESSOR YE YELLOW OG ORANGE PROTECTIVE EARTH RD RED BK BLACK BN BROWN YEGN YELLOW GREEN C1 CBB61 C2 CBB65 OUTDOOR UNIT MOTOR FAN PGF PG M1 RT1 0 BLOCK MOTOR RECEIVER AND YEGN GN BN BK BU WH L N TERMINAL SWING UD DISPLAY BOARD DISP1 BU N 1 2 XT 3 BN BK COM OUT N 0 RT2 AP1 TUBE ROOM M2 SWING TEM SENSOR DISP2 JUMP YEGN PE AP2 TUBE ROOM TEM SENSOR CAP EVAPORATOR BU BK BN 3 4 K111 AC L L OUT YEGN ...

Page 19: ... AP1 M2 SWING JUMP YEGN PE PE CAP EVAPORATOR BU BK BN EARTH PLATE TEM SENSOR EXHAUST TEM SENSOR OUTROOM TEM SENSOR OUTTUBE L INDC1 WH OG INDC2 COMP W COMP V COMP U COMPRESSOR EKV 4 WAY FAN MOTOR YE TERMINAL BLOCK BN RD C1 X1 C2 PFCC1 YE PFCC2 4YV PE BU BN BK FA COMP YEGN YEGN SAT 4WH 5WH OVC COMP OFAN PE 3RD 2BU 1YE 4V RT3 RT2 RT1 COM INNER 1 PE PE E C T U RD YE BU N 1 2 3 XT AP1 BK BN PE BU YEGN ...

Page 20: ...DC1 WH OG INDC2 COMP W COMP V COMP U COMPRESSOR EKV 4 WAY FAN MOTOR YE TERMINALBLOCK BN RD C1 X1 C2 PFCC1 YE PFCC2 PE BU BN BK FA COMP YEGN YEGN WH WH OFAN PE RD BU YE 4V RT3 RT2 RT1 COM INNER 1 PE PE PE W RD YE BU N 1 2 3 XT BK BN PE BU YEGN N AC L YEGN T SENSOR VALVE V U 0 0 0 INDOOR UNIT WH BK M WARNING Please don t touch any terminal when the AP1 is higher than 30V to prevent the risk of elect...

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Page 22: ...otector 3 Temperature sensor 5 Fan HALL interface 6 Outdoor fan 7 4 way valve Communication interface with indoor unit 9 Live wire 10 Earthing wire 11 Neutral wire 13 PFC capacitor interface 1 14 Reactor interface 2 4 Electric expansion valve 8 12 Reactor interface 1 2XWGRRU 8QLW Ɣ 723 9 Ɣ 27720 9 ...

Page 23: ...5 24 18 19 20 21 MODE icon 17 If MODE button is pressed current operation mode icon AUTO COOL DRY FAN or HEAT only for heat pump models will show ON OFF Button Button Button Button MODE Button FAN Speed Button SWING Button I FEEL Button Sleep Mode Button Temperature Display Button TIMER ON Button Clock Button TIMER OFF Button TURBO Button Light Mode Button X FAN Button ...

Page 24: ...e DIGITAL display 24 This area will show the set tempe rature In SAVE mode SE will be displayed is displayed when pressing the AIR button Press this button again to clear the display AIR icon 25 29 30 26 27 31 28 HEALTH icon 26 is displayed when pressing the HEALTH button Press this button again to clear the display X FAN icon 27 is displayed when pressing the X FAN button Press this button again ...

Page 25: ... this button again to cancel IFEEL function IFEEL SWING 7 ON OFF MODE This button is used for setting Fan Speed in the sequence that goes from AUTO to then back to Auto FAN 1 4 3 2 5 Press this button to turn on the unit Press this button again to turn off the unit Press this button to decrease set temperature Holding it down above 2 seconds rapidly decreases set temperature In AUTO mode set tempe...

Page 26: ...ry the indoor unit even though you have turned off the unit After energization X FAN OFF is defaulted X FAN is not available in AUTO FAN or HEAT mode Press this button to activate deactivate the Turbo function which enables the unit to reach the preset temperature in the shortest time In COOL mode the unit will blow strong cooling air at super high fan speed In HEAT mode the unit will blow strong ...

Page 27: ...d 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 reinsert them after 30 seconds If it still can t operate properly Notes replace the batteries Sketch map for replacing batteries About Back lighting Function 21 in HEAT mode to start The unit lights for 4s when ene...

Page 28: ...will rotate to the horizontal position L The indoor fan will be stopped after operating for 60s at setting speed b Due to the blockage of PG motor horizontal louver will keep the stop position when the unit is turned off In other modes When the unit is stopped due to other mal functions up down horizontal louver will rotate to horizontal position L The indoor fan will be stopped after operating fo...

Page 29: ...emperature will increase by1o C every one hour After the temperature has increased by 2o C the unit will keep this temperature When the unit has operated for 7 hours the temperature will decrease by 1o C and then the unit will operate at this temperature all the time 3 When the initial temperature is set as 28 29o C after starting up the sleep function the temperature will increase by1o C every on...

Page 30: ...ssively The unit will stop operation due to protection and the corresponding malfunction of temperature sensor will be displayed directly 6 Compulsory operating function of indoor unit 1 Enter into compulsory operation control After the unit is energized for 5mins press the light button on remote controller for 3 times in 3s successively to enter into Freon recovery mode Fo will be displayed When ...

Page 31: ...g operation will start 2 Start to defrost Compressor stops and starts up 55S later 1 Toutdoor pipe 12o C 2 Toutdoor ambient 5o C and the Toutdoor pipe 6o C last more than 80S 3 The continuous running time of defrosting reaches to 8min 6 Compressor Control 1 The frequency of compressor will be controlled with the relationship of ambient temperature and preset temperature and changing speed of ambie...

Page 32: ...rcurrent or control voltage low for IPM module as some abnormal results IPM will de tect module protection signal as the unit is on Once the module protective signal is detected stop the unit with module protection immediately If the module protection is resumed and compressor has stopped for 3min the unit will be allowed to operate If the module protection continu ously occurs for three times it ...

Page 33: ...tion concerning use of the appliance by a person responsible for their safety Children should be supervised to ensure that they do not play with the appliance 7 1 1 Installation Site Instructions Proper installation site is vital for correct and efficient operation of the unit Avoid the following sites where strong heat sources vapours flammable gas or volatile liquids are emitted high frequency e...

Page 34: ...sive earth device by the professionals 4 The air switch must have the functions of magnetic tripping and heat tripping to prevent short circuit and overload 5 The minimum distance between the unit and combustive surface is 1 5m 6 The appliance shall be installed in accordance with national wiring regulations 7 An all pole disconnection switch with a contact separation of at least 3mm in all poles ...

Page 35: ... Above 30cm Above 200cm Above 30cm Above 15cm Above 300 cm 250 cm Space to the obstruction Air outlet side Space to the wall Air inlet side The dimensions of the space necessary for proper installation of the unit include the minimum permissible distances to adjacent parts Schematic diagram being reference only outdoor unit is with variation please refer to real product for authentic information ...

Page 36: ... Wrap the insulating tube with wide rubber belt from the joint of outlet pipe and insulating pipe so as to prevent shift of insulating tube The drain hose should be placed at a downward slant for easy discharge of condensate Note the insulating tube should be connected reliably with the sleve outside the outlet pipe The drain hose should be downward slant without distortion bulge or fluctuation Do...

Page 37: ...the wiring only 2 Cut off the tailing 1 and tailing 2 when routing both the wiring and piping 2 Take out the piping from body case wrap the piping power cords drain hose with the tape and then make them pass through the piping hole As shown in Fig 4 3 Hang the mounting slots of the indoor unit on the upper hooks of the mounting plate and check if it is firm enough As shown in Fig 5 4 The installat...

Page 38: ...ing Is thermal insulation sufficient It may cause condensation Is water drainage satisfactory It may cause water leakage Is the voltage in accordance with the rated voltage marked on the nameplate It may cause electric malfunction or damage the unit Is the electric wiring or piping connection installed correctly and securely It may cause electric malfunction or damage the parts Has the unit been s...

Page 39: ...e unit 2 Operation Test Method 1 Switch on power and press ON OFF button on the wireless remote controller to start the operation 2 Press MODE button to select the COOL HEAT Not available for cooling only unit FAN to check whether the opera tion is normal or not Remove the healthy filter and reinstall it after cleaning according to the installation instruction Do not use brush or hard objects to c...

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Page 54: ...egulations to avoid electric shock and casualty or even death due to drop from high attitude Static maintenance is the maintenance during de energization of the air conditioner For static maintenance make sure that the unit is de energized and the plug is disconnected dynamic maintenance is the maintenance during energization of the unit Before dynamic maintenance check the electricity and ensure ...

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Page 60: ...the power and wait 20 minutes or use DC voltmeter to measure the voltage on the two ends of capacitor test3 until the voltage is lower than 20V Check the connection of reactor L in the Electrical Wiring Diagram If the wiring of reactor Lis normal Connect the reactor L according to Electrical Wiring Diagram Re energize and turn on the unit If the fault is eliminated End Replace the control panel AP...

Page 61: ... tion is in correct order If the voltage input of the machine is within normal range Use AC voltmeter to measure the voltage between terminal L and N on the wiring board XT If the compressor coil resistance is normal If the insulation of compressor coil against the copper tube is in good condition If the working load of the machine are too high If the radiation is good If the charge volume of refr...

Page 62: ...Wiring Diagram Then Restart the unit Remove the wires on the two ends of capacitor C2 Then use capacitance meter to measure the capacitor C2 Verify as per the Parameters Sheet Stop the unit and disconnect the power supply Wait 20 minutes or use DC voltmeter to measure the voltage between the two ends of capacitor C2 until the voltage is lower than 20V If capacitor C2 is failed Replace the capacito...

Page 63: ... unit Does the outdoor fan work normally 1 Check if the fan terminal OFAN is connected correctly 2 Resistance between any two terminals is measure by an ohm gauge and should be less than 1K Ohm Replace the control panel Replace the fan capacitor C1 Replace the outdoor fan 3 High temperature and overload prection diagnosis AP1 here in after refers to the control board of the outdoor unit Mainly det...

Page 64: ...pressor connected correctly Is connection sequence right Connect the wires as per the connection diagram Replace the control panel AP1 If the fault is eliminated Replace the compressor End 4 Start up failure following AP1 for outdoor unit control board Mainly detect Whether the compressor wiring is connected correct Is time for compressor stopping enough Is compressor broken ...

Page 65: ...compressor End Out of step occurs in operation Is the outdoor fan working normally Is the outdoor unit blocked by foreign objects Replace the control panel AP1 If the fault is eliminated Replace the compressor End Check if the fan terminal OFAN is connected correctly Remove foreign objects Replace the fan capacitor C1 Replace the outdoor fan 5 Out of step diagnosis for the compressor AP1 here in a...

Page 66: ...e terminal hole and the fifth pin are almost the same less than 100 ohm Replace the PMV If the fault is eliminated If the fault is eliminated Replace the control panel AP1 Coolant leakage refilling the coolant End 6 Overload and air exhaust malfunction diagnosis following AP1 for outdoor unit control board Mainly detect Wether the PMV is connected well or not Is PMV damaged Is refrigerant leaked ...

Page 67: ...he resistance around zero The capacitor is short circuited and the capacitor should be replaced Restart the unit If the fault is eliminated Disconnect the terminals for the reactor and measure the resistance between the two terminals of the reactor by an ohmmeter Whether there is any damage or short circuit Replace the reactor Restart the unit If the fault is eliminated Replace the control panel A...

Page 68: ...P1 of the outdoor unit If the fault is eliminated Is the connection right Check the wiring of the indoor and outdoor units with reference to the wiring diagram Correctly connect the corresponding wires for the indoor and outdoor units with reference to the wiring diagram 8 Communication malfunction following AP1 for outdoor unit control board Mainly detect Detect the indoor and outdoor units conne...

Page 69: ...06 114 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 0 625 1 46 6 40 7 967 79 1 933 118 0 608 2 44 31 41 7 653 80 1 871 119 0 592 3 42 14 42 7 352 81 1 811 120 0 577 4 40 09 43 7 065 82 1 754 121 0 561 5 38 15 44 6 791 83 1 699 122 0 547 6 36 32 45 6 529 84 1 645 123 0 532 7 34 58 46 6 278 85 1 594 124 0 519 8 32 94 47 6 038 86 1 544 125...

Page 70: ...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 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 2 415 120 0 769 4 53 46 43 9 42 82 2 339 121 0 746 5 50 87 44 9 054 83 2 265 122 0 729 6 48 42 45 8 705 84 2 194 123 0 71 7 46 11 46 8 37 85 2 125 124 0 692 8 43 92 47 8 051 86 2 059 125 0...

Page 71: ...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 70 8 555 109 2 568 7 232 6 32 36 38 71 8 268 110 2 498 6 220 5 33 34 88 72 7 991 111 2 431 5 209 34 33 45 73 7 726 112 2 365 4 198 3 35 32 09 74 7 47 113 2 302 3 199 1 36 30 79 75 7 224 114 2 241 2 178 5 37 29 54 76 6 998 115 2 182 1...

Page 72: ...HU EWXUQLQJ RII DOO SRZHU VXSSOLHV EHIRUH GLVDVVHPEO 2 1 2 Remove the filter Open the front panel filter 1 Before disassembly Before disassembly Push the filter upward and then pull it outward to remove it screw 1RWH WKH IROORZLQJ SDQHO PRGHO LV VHW DV DQ H DPSOH 7KH SRVLWLRQ RI GLVSOD IRU RWKHU SDQHOV PD EH GLIIHUHQW ...

Page 73: ...the horizontal louver Pull the horizontal louver outward to remove it 4 Remove the panel axile bush horizontal louver panel display Loosen the screws fixing the indicator Remove the indicator Along the groove fixing front panel slide the rotor shaft outward to remove the front panel ...

Page 74: ...ric box cover Loosen the screw of the electric box cover Remove the electric box cover Remove the front case Open the screw cap on the front case Remove the screws fixing the front case Loosen the clasps of the front case electric box cover clasps ...

Page 75: ...rtical louver Loosen the 10 clasps connecting the vertical louver and bottom case subassembly Remove the vertical louver 8 Remove the electric box subassembly Disconnect the indoor tube temperature sensor front case clasps vertical louver temperature sensor ...

Page 76: ...asp at the joint of the electric box cover and the electric box Disconnect the wiring terminal of the motor and step motor on the electric box Loosen the screws fixing the electric box and remove the electric box screw ground wire electric box wiring terminal of motor wiring terminal of motor electric box ...

Page 77: ...y piping 1 1 2 9 Remove press plate of connecting pipe Remove the screws of the press plate of connecting pipe Remove press plate of connecting pipe 10 Remove the evaporator Remove the screws at the joint of the evaporator and bottom case ...

Page 78: ... 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 motor press plate Remove the press plate evaporator step motor press plate ...

Page 79: ...et sub 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 motor Take down the motor ...

Page 80: ...op panel 2 Remove grille and panel Remove the 2 screws connecting the grille and the panel and then remove the grille top cover grille Twist off the screws used for fixing the handle pull the handle up ward to remove it Handle 5HPRYDO 3URFHGXUH RI 2XWGRRU 8QLW DUQLQJ H VXUH WR ZDLW IRU D PLQLPXP RI PLQXWHV DIWHU EWXUQLQJ RII DOO SRZHU VXSSOLHV EHIRUH GLVDVVHPEO 8QLW ...

Page 81: ... Remove left side plate and right side plate 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 Remove the screws connecting the left side plate and the chassis and then remove the left side plate assy panel rightsideplate leftsideplate ...

Page 82: ...ls and then pull the electric box upwards to remove it Remove the 4 tapping 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 remove it Remove the nuts fixing the blade and then remove the axial flow blade axial flow blade electric box fan motor ...

Page 83: ...ric box and then remove the fireproof electric box Fireproof electric box Since the piping ports on the soundproof sponge are torn easily remove the soundproof sponge carefully soundproof sponge 7 Remove isolation sheet Remove the 3 screws fixing the isolationsheet and then remove the Isolation sheet isolation sheet ...

Page 84: ... and the condenser assy and then remove the 4 way valve assy Remove the 3 foot nuts fixing the compressor and then remove the compressor Remove the screws connecting the support condenser and condenser assy and then remove the support condenser 9 Remov e compressor compressor 4 way valve assy 10 Remove condenser sub assy 1 support ...

Page 85: ...4GOQXCN 2TQEGFWTG 2 Remove the chassis sub assy and condenser sub assy condenser sub assy chassis sub assy ...

Page 86: ... panel with the front panel and the right side plate and then remove the top panel 2 Remove grille and panel Remove the 2 screws connecting the grille and the panel and then remove the grille top cover grille Handle Steps Procedure Twist off the screws used for fi xing the handle pull the handle upward to remove it Loosen the screws fixing the valve cover and then remove the valve cover Valve cove...

Page 87: ...left side plate and right side plate 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 Remove the screws connecting the left side plate and the chassis and then remove the left side plate assy panel rightsideplate leftsideplate Steps Procedure ...

Page 88: ...hen pull the electric box upwards to remove it Remove the 4 tapping 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 remove it Remove the nuts fixing the blade and then remove the axial flow blade axial flow blade electric box fan motor Steps Procedure ...

Page 89: ...nd then remove the fireproof electric box Fireproof electric box Since the piping ports on the soundproof sponge are torn easily remove the soundproof sponge carefully soundproof sponge 7 Remove Isolation sheet Remove the 3 screws fixing the isolation sheet and then remove the Isolation sheet Isolation sheet Steps Procedure ...

Page 90: ...y and then remove the 4 way valve assy Remove the 3 foot nuts fixing the compressor and then remove the compressor Remove the screws connecting the support condenser and condenser assy and then remove the support condenser 9 Remov e compressor compressor 4 way valve assy 10 Remove condenser sub assy 1 support Electronic expansion valve Steps Procedure ...

Page 91: ...4GOQXCN 2TQEGFWTG 2 Dissemble the chassis sub assy and condenser sub assy condenser sub assy chassis sub assy Steps Procedure ...

Page 92: ...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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Gree GWH18RC-K3DNA1A, Service Manual

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