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Installation and Maintenance

Service Manual

11. Removal Procedure

11.1 Removal Procedure of Indoor Unit

Warning: Be sure to wait for a minimum of 20 minutes
after turning off all power supplies and discharge the
refrigerant completely before removal.

Procedure

Steps

panel

clasp

left filter and right filer

1. Remove filter

Open the panel.

Loosen the clasp shown in the fig and then pull
the left filter and right filer outwards to remove
them.

2. Remove panel

Remove two screws fixing display and then
remove it.

screws

display

Summary of Contents for YAA1FB

Page 1: ...GREE ELECTRIC APPLIANCES INC OF ZHUHAI Change for Life Service Manual GWH18RC K3DNA3G GWH24RD K3DNA3G Refrigerant R410A Models...

Page 2: ...10 5 Electrical Part 11 5 1 Wiring Diagram 11 5 2 PCB Printed Diagram 14 6 Function and Control 16 6 1 Remote Controller Introduction 16 6 2 Brief Description of Modes and Functions 20 Part Installati...

Page 3: ...ded View and Parts List 59 10 1 Indoor Unit 59 10 2 Outdoor Unit 61 11 Removal Procedure 65 11 1 Removal Procedure of Indoor Unit 65 11 2 Removal Procedure of Outdoor Unit 70 Appendix 81 Appendix 1 Re...

Page 4: ...1 Technical Information Service Manual 1 Summary Part Technical Information Indoor Unit GWH18RC K3DNA3G I GWH24RD K3DNA3G I Outdoor Unit GWH18MC K3DNE3G O GWH24MD K3DNE3G O Remote Controller YAA1FB...

Page 5: ...lication Area m2 23 34 Indoor Unit Model of indoor unit GWH18RC K3DNA3G I Indoor Unit Product Code CB302N02902 Fan Type Cross flow Diameter Length DXL mm 98X710 Fan Motor Cooling Speed SH H M L SL r m...

Page 6: ...51X38 1X660 Fan Motor Speed rpm 750 Output of Fan Motor W 60 Fan Motor RLA A Fan Motor Capacitor F Air Flow Volume of Outdoor Unit m3 h 3200 Fan Type Axial flow Fan Diameter mm 520 Defrosting Method A...

Page 7: ...24RD K3DNA3G I GWH24RD K3DNA3G I Indoor Unit Product Code CB302N03000 CB302N03000 Fan Type Cross flow Cross flow Diameter Length DXL mm 100X765 100X765 Fan Motor Cooling Speed SH H M L SL r min 1350 1...

Page 8: ...Coil Length LXDXW mm 984X38 1X748 984X38 1X748 Fan Motor Speed rpm 800 800 Output of Fan Motor W 90 90 Fan Motor RLA A Fan Motor Capacitor F Air Flow Volume of Outdoor Unit m3 h 4000 4000 Fan Type Ax...

Page 9: ...0 40 0 5 7 10 Conditions Indoor DB27 C WB19 C Indoor air flow Super High Pipe length 5m Conditions Indoor DB20 C WB15 C Indoor air flow Super High Pipe length 5m Outdoor temp C Outdoor temp C Capacity...

Page 10: ...onnecting indoor and outdoor unit Inlet and outlet pipe temperature of heat exchanger Fan speed of indoor unit Fan speed of outdoor unit Compressor frequency Hz Indoor Outdoor P MPa T1 o C T2 o C 20 1...

Page 11: ...Technical Information Service Manual 3 Outline Dimension Diagram 3 1 Indoor Unit Unit mm Models W H D 18K 945 298 211 24K 1018 315 230 18K 24K W 694 685 189 144 57 38 116 45 45 60 95 55 55 70 70 194 D...

Page 12: ...9 Technical Information Service Manual 3 2 Outdoor Unit Unit mm 24K 18K 963 892 700 396 341 368 560 427 1000 920 610 370 790 395...

Page 13: ...lve Discharge Suction Heat exchanger evaporator Heat exchanger condenser Valve Valve Liquid pipe side Gas pipe side Strainer Capillary Strainer Accumlator Compressor 4 Refrigerant System Diagram Conne...

Page 14: ...k VT Violet OG Orange Note Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model Model GWH18RC K3DNA3G I SENSOR SENSOR L AC L BK PE ROOM TUBE M2 SWING UD ROO...

Page 15: ...terminal when the voltage of terminal P DC and N DC at AP1 is higher than 30V to prevent the risk of electric shock POWER COMP L1 W V U PRINTED CIRCUIT BOARD L1 PE YEGN FAN MOTOR 4WAY OFAN VT VT VALV...

Page 16: ...NER PE YEGN PE N L YEGN BU PE N L N 1 2 3 BN BK BU XT1 INDOOR UNIT L1 RING BK BN BU BN BU YEGN BLOCK TERMINAL PE MAGNETIC PE M1 4 WAY 4YV VALVE VT VT OFAN 4WAY FAN MOTOR YEGN PE L1 PRINTED CIRCUIT BOA...

Page 17: ...ire 5 Interface of neutral wire for health function 6 Control interface of PG motor 7 Interface of live wire for health function 8 Interface of indoor unit and outdoor unit communication 9 Auto button...

Page 18: ...mperature sensor 3 Terminal of electronic expansion valve 4 Terminal of outdoor fan 5 Terminal of 4 way valve 6 Terminal of compressor electric heating 7 Terminal of chassis electric heating 8 Termina...

Page 19: ...mp Outdoor ambient temp Indoor ambient temp Sleep mode Clock Heat mode Fan mode Dry mode Cool mode Auto mode Operation mode I feel 1 1 2 5 4 6 7 8 11 12 13 9 14 15 ON OFF button button 3 SWING button...

Page 20: ...changes as below This remote controller is universal If any command or is sent out the unit will carry out the command as indicates the guide louver swings as 7 I FEEL Button Press this button to turn...

Page 21: ...rned on is displayed If the light is turned off disappears 16 X FAN Button Pressing X FAN button in COOL or DRY mode the icon is displayed and the indoor fan will continue operation for 10 minutes in...

Page 22: ...no obstacles between them Signal may be interfered easily in the room where there is fluorescent lamp or wireless telephone remote controller should be close to indoor unit during operation Replace n...

Page 23: ...rost ing signal from outdoorunit displayerwill Heating indicator on indoor display is off for 0 5s and then on for 10s during blinking 10slater indoor fan motor will stop to run 5 Anti coold wind func...

Page 24: ...ll be cleared Frequency limitation and reduction states shall be displayed by means of remote calling 2 Failure display control Indicator failure display shall be kept synchronous with Double 8 failur...

Page 25: ...modes 7 Control of indoor fan Indoor fan can be set at four levels super high high middle and low with a remote controller When one level is set the fan will thus operate at such level The fan can als...

Page 26: ...ation according to the actual defrosting result and the complete unit will resume normal heating operation Outdoor Units 1 Input Parameter Compensation and Calibration 1 Check the ambient temperature...

Page 27: ...e defrosting operation will start Conditions of finishing defrosting The defrosting operation can exit when any of the conditions below is satisfied Toutdoor pipe temperature Toutdoor ambient temperat...

Page 28: ...erature you should adjust the compressor frequency by reducing 8Hz 90s till the lower limit 4 Reducing frequency at high speed If Tfrozen preventing power turn off temperature T inner pipe Tfrozen pre...

Page 29: ...frequency reducing temperature at normal speed T inner pipe then overload protects machine stopping 3 Reducing frequency at high speed and power turn off If Theating overload frequency reducing temper...

Page 30: ...frequency 3 Power turn off If IPhase Current IPower Turn Off Phase Current the compressor phase current shall stop working for overcurrent protection if IPhase Current IFrequency Reducing Phase Curre...

Page 31: ...u should not detect the failure of outdoor tube sensor within 10 minutes heating operation compressor except the defrosting and you could detect it at other time 3 Outdoor Exhaust Sensor a The compres...

Page 32: ...unit 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 a...

Page 33: ...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 34: ...east 15cm At least 15cm At least 250cm Space to the wall S p a c e t o t h e o b s t r u c t i o n r o o l f e h t o t e c a p S Space to the obstruction Drainage pipe Space to the wall Space to the o...

Page 35: ...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 36: ...pecialized grounding device by a professional Please make sure it is always grounded effectively otherwise it may cause electric shock 2 The yellow green wire in air conditioner is grounding wire whic...

Page 37: ...outlet pipe The position of piping hole should be a little lower than the wall mounted frame As show in Fig 1 5 Connect the Pipe of Indoor Unit 1 Aim the pipe joint at the corresponding bellmouth As...

Page 38: ...ord for installation when binding them When binding to a certain degree separate the indoor power and then separate the drain hose As show in Fig 15 3 Bind them evenly 4 The liquid pipe and gas pipe s...

Page 39: ...t installation location according to the house structure 2 Fix the support of outdoor unit on the selected location with expansion screws 5 Connect Outdoor Electric Wire 1 Remove the wire clip connect...

Page 40: ...Remove the valve caps on the liquid valve and gas valve and the nut of refrigerant charging vent 2 Connect the charging hose of piezometer to the refrigerant charging vent of gas valve and then conne...

Page 41: ...ature sensor is open short circuited F1 Indoor evaporator temperature sensor is open short circuited F2 Module temperature sensor is open short circuited P7 Outdoor ambient temperature sensor is open...

Page 42: ...then peformedischarging NOTE A large capacity electrolytic capacitor is used in the outdoor unit controller inverter Therefore if the power supply is turned off charge charging voltage DC280V to 380V...

Page 43: ...mainboard broken Check flow chart Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted Start Insert the temperature sensor tightly Yes Yes Yes Yes Yes...

Page 44: ...ection of PG motor control terminal is firm 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 opened Tighte...

Page 45: ...uit of the mainboard is defined abnormal Check flow chart Start Is there jumper cap on the mainboard Is the jumper cap inserted correctly and tightly Replace the jumper cap with the same model Appeara...

Page 46: ...tordischarges slowly The zero cross detectioncircuit of the mainboard is defined abnormal Check flow chart Turn power off for 1minute the turn back on The unit returns to normal Conclusion U8 is displ...

Page 47: ...wiring diagram Is malfunction eliminated Is malfunction eliminated Is malfunction eliminated Is malfunction eliminated Main board matches with display board Main board of IDU matches with that of ODU...

Page 48: ...rs after de energizing and turning on the unit Whether stop time for compressor is more than 3min No No No No No No No Yes Yes Yes Yes Yes No Yes Yes Yes Yes Whether valve of outdoor unit is opened Wh...

Page 49: ...uch as clean heat exchanger improve ventilation etc Turn on the unit again after the power voltage is resumed Charge refrigerant according to service manual Whether the outdoor fan can operate normall...

Page 50: ...ed Check flow chart Start the troubleshooting for temperature sensor Check the connection between temperature sensor and wiring terminal is loose or in poor connection Check whether the temperature se...

Page 51: ...ient temperature Whether the resistance 1K Whether wire connection wire electronic expansion valve is in good condition Check the coil of electronic expansion valve If it s damaged please replace it I...

Page 52: ...min There is malfunction for the detection circuit on main board of outdoor unit Check the input power and resume the power supply normal Is malfunction eliinated Measure the voltage at both ends of...

Page 53: ...minal is connected well Whether the fan is damaged Replace fan capacitor unavailable for DC fan Replace outdoor fan Whether outdoor ambient temperature is more than 53o C Whether radiation inside or o...

Page 54: ...or wires are connected correctly Whether there re above circumstances Connect compressor wires according to correct wiring method Modify it according to Service Manual and then energize and turn on th...

Page 55: ...function of PFC Protection HC Main check point Whether power supply is normal Check flow chart Start Check whether power supply is normal Is power abnormal Replace main board of outdoor unit End Turn...

Page 56: ...n board of outdoor unit is damaged Check flow chart Communication malfunction De energize the unit and then check whether connection wires between indoor unit and outdoor unit and wiring inside the el...

Page 57: ...time for compressor is more than 3min Whether compressor wires are connected correctly The stop time for unit is not enough high pressure and low pressure of system are unbalanced please wait for 3min...

Page 58: ...mpressor Replace the mainboard with the same model End Is the supply voltage too low with overload Is the indoor outdoor heat exchanger dirty or are the air inlet and outlet blocked The fan is abnorma...

Page 59: ...tection circuit malfunctions of phase current of compressor U1 Hardware of main board is damaged Please replace main board 4 DC busbar voltage is too high PH Input voltage is too high or unstable Hard...

Page 60: ...od for details Malfunction of compressor Compressor can t operate Refer to point 5 of maintenance method for details 9 3 Troubleshooting for Normal Malfunction 1 Air Conditioner Can t be Started Up 2...

Page 61: ...re parts touching together inside the outdoor unit There s abnormal sound fro outdoor unit Remove foreign objects Adjust all parts position of outdoor unit tighten screws and stick damping plaster bet...

Page 62: ...59 Installation and Maintenance Service Manual 10 Exploded View and Parts List 10 1 Indoor Unit 32 33 5 10 14 39 12 11 13 8 7 4 2 28 30 31 24 23 22 16 26 6 29 27 3 1 9 15 17 18 19 21 20 34...

Page 63: ...Frame 01252218 01252032 1 16 Motor Press Plate 26112494 26112330 1 17 Fan Motor 15012146 15012098 1 18 Connecting pipe clamp 2611216402 2611218801 1 19 Drainage hose 05230014 0523001405 1 20 Stepping...

Page 64: ...61 Installation and Maintenance Service Manual 10 2 Outdoor Unit GWH18MC K3DNE3G O 2 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 29 30 28 31 32 33 34 35...

Page 65: ...133204 1 12 Valve support assy 01715010P 1 13 Right Side Plate 0130509402P 1 14 Valve cover 22245002 1 15 Handle 26233053 1 16 Wiring Clamp 26115004 1 17 Rear Grill 01473043 1 18 Condenser Assy 011638...

Page 66: ...63 Installation and Maintenance Service Manual GWH24MD K3DNE3G O 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 35 34 36 37...

Page 67: ...Sub Assy 07135072 1 14 Cut off Valve 07133157 1 15 Baffle Valve Support 01365435P 1 16 Right Side Plate 0130504401P 1 17 Valve Cover 22245003 1 18 Big Handle 26235001 1 19 Wiring Clamp 26115004 1 20 R...

Page 68: ...urning off all power supplies and discharge the refrigerant completely before removal Procedure Steps a a b panel clasp left filter and right filer 1 Remove filter Open the panel Loosen the clasp show...

Page 69: ...air outlet 2 The quantity of screws fixing the front case sub assy is different for different models screw screw caps screws front case sub assy 3 Remove horizontal louver Push out the axile bush on h...

Page 70: ...tor and wiring terminal of step motor from the mainboard Note 1 Location of tube temperature sensor and tieline on the evaporator is different for different models 2 When pulling out the wiring termin...

Page 71: ...n pipe clamp and then remove the connection pipe clamp Remove 3 screws fixing evaporator assy evaporator c Adjust the position of connection pipe on evaporator slightly and then lift the evaporator up...

Page 72: ...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 73: ...alve cover up ward to remove it b a a 1 Remove top panel Remove handle valve top panel top panel the 3 screws connecting the top panel with the front panel and the right side plate and then remove the...

Page 74: ...hassis and the motor support and then remove the panel 3 Remove left side plate and right side plate Remove the screws connecting the right side plate with the chassis the valve support and the electr...

Page 75: ...he wiring terminals 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 th...

Page 76: ...proof sponge carefully soundproof sponge 7 Remove Isolation sheet Remove the 3 screws fixing the isolation sheet and then remove the Isolation sheet Isolation sheet 8 Remov e 4 way valve assy Discharg...

Page 77: ...ve the compressor Remove the screws connecting the support condenser and condenser assy and then remove the support condenser 9 Remov e compressor compressor 10 Remove condenser sub assy a support cap...

Page 78: ...ove the 3 screws connecting the top panel with the front panel and the right side plate and then remove the top panel top panel 2 Remove grille front side plate and panel Remove Remove the 1 screw con...

Page 79: ...the panel 3 Remove right side plate and left 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...

Page 80: ...t the wiring terminals 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...

Page 81: ...the soundproof sponge carefully 7 Remove Isolation sheet Remove the 3 screws fixing the isolation sheet and then remove the Isolation sheet Isolation sheet Discharge the refrigerant completely unsold...

Page 82: ...the 2 bolts fixing the valve subassemblies Unsolder the welding joint connecting the gas valve and the return air pipe Remove the gas valve Note When unsoldering the soldering joint wrap the gas valv...

Page 83: ...80 Installation and Maintenance Service Manual 11 Remove condenser sub assy Remove the chassis sub assy and condenser sub assy chassis sub assy condenser sub assy...

Page 84: ...32 0 55 56 55 4 13 79 80 78 8 26 34 35 33 8 1 57 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...

Page 85: ...llowing steps A Cut the pip Confirm the pipe length according to the distance of indoor unit and outdoor unit Cut the required pipe with pipe cutter B Remove the burrs Remove the burrs with shaper and...

Page 86: ...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 2 064 1...

Page 87: ...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 2 6...

Page 88: ...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 79 10 2...

Page 89: ...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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