Gree GWH07AFAXA-K3NNA1A Service Manual
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Gree GWH07AFAXA-K3NNA1A Service Manual

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Service Manual
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

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Summary of Contents for Gree GWH07AFAXA-K3NNA1A

  • Page 1 Change for life Service Manual GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI...

  • Page 2: Table Of Contents

    Table of Contents Service Manual Part I : Technical Information ........1 1. Summary ................1 2. Specifications ..............4 2.1 Specification Sheet ....................4 2.2 Capacity Variation Ratio According to Temperature .........22 2.3 Cooling and Heating Data Sheet in Rated Frequency .......23 3.
  • Page 3 Service Manual 8.8 Check after Installation and Test operation ..........62 9. Maintenance ..............63 9.1 Error Code List ......................63 9.2 Procedure of Troubleshooting ................66 9.3 Troubleshooting for Normal Malfunction ............76 10. Exploded View and Parts List ........78 10.1 Indoor Unit ......................78 10.2 Outdoor Unit ......................86...

  • Page 4: Part I : Technical Information

    1. Summary Service Manual Indoor Unit A1 panel A2 panel A3 panel A5 panel A4 panel Outdoor Unit: GWH07AGAXA-K3NNA1A/O GWH12AGBXB-K3NNA1B/O GWH09AGAXA-K3NNA1A/O GWH18AGCXD-K3NNA1B/O GWH18QDXD-K3NNA6A/O GWH24AADXE-K3NNA1A/O Technical Information...
  • Page 5 Service Manual GWH28AGEXF-K3NNA1A/O GWH24QE-K3NNB4G/O GWH36QE-K3NNB4A/O Remote Controller: YAW1F YAP1F ON/OFF MODE I FEEL T-ON T-OFF TEMP CLOCK LIGHT X-FAN SLEEP Technical Information...
  • Page 6 Service Manual Model list: Indoor product Outdoor product Remote Model Product code Indoor model Outdoor model code code Controller GWH07AFAXA-K3NNA1A CA528000100 GWH07AFAXA-K3NNA1A/I CA528N00100 GWH07AFAXA-K3NNA2A CA363002200 GWH07AFAXA-K3NNA2A/I CA363N02200 GWH07AGAXA-K3NNA1A/O CA385W11300 GWH07AFAXA-K3NNA4A CA371001500 GWH07AFAXA-K3NNA4A/I CA371N01500 GWH09AFAXA-K3NNA1A CA348008400 GWH09AFAXA-K3NNA1A/I CA348N08400 GWH09AFAXA-K3NNA2A CA363001800 GWH09AFAXA-K3NNA2A/I...

  • Page 7: Specifications

    2. Specifications Service Manual 2.1 Specification Sheet GWH07AFAXA-K3NNA1A Model GWH07AFAXA-K3NNA2A GWH07AFAXA-K3NNA4A CA528000100 Product Code CA363002200 CA371001500 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity 2250 Heating Capacity 2300 Cooling Power Input Heating Power Input...
  • Page 8 Service Manual Outdoor Unit Model GWH07AGAXA-K3NNA1A/O Outdoor Unit Product Code CA385W11300 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO.,LTD Compressor Model QXA-A081T170 Compressor Oil Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input Compressor Overload Protector UP3-MC0(MC0L) Throttling Method Capillary Set Temperature Range ºC 16~30 Cooling Operation Ambient Temperature Range...
  • Page 9 Service Manual GWH09AFAXA-K3NNA1A GWH09AFAXA-K3NNA2A Model GWH09AFAXA-K3NNA3A GWH09AFAXA-K3NNA4A CA348008400 CA363001800 Product Code CA362003400 CA371002000 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity 2550 Heating Capacity 2650 Cooling Power Input Heating Power Input Cooling Power Current Heating Power Current Rated Input 1050...
  • Page 10 Service Manual Outdoor Unit Model GWH09AGAXA-K3NNA1A/O Outdoor Unit Product Code CA385W12800 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO,LTD. Compressor Model QXF-B095T170 Compressor Oil FW68DA or equivalent Compressor Type Rotary Compressor LRA. 19.4 Compressor RLA Compressor Power Input Compressor Overload Protector HPA-420 Throttling Method Capillary Set Temperature Range...
  • Page 11 Service Manual GWH12AFBXB-K3NNA1B GWH12AFBXB-K3NNA2B Model GWH12AFBXB-K3NNA3B GWH12AFBXB-K3NNA4B CA348008300 CA363002000 Product Code CA362003100 CA371001600 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity 3250 Heating Capacity 3400 Cooling Power Input 1009 Heating Power Input Cooling Power Current Heating Power Current Rated Input 1350...
  • Page 12 Service Manual Outdoor Unit Model GWH12AGBXB-K3NNA1B/O Outdoor Unit Product Code CA385W11400 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO,LTD. Compressor Model QXA-B120C170 Compressor Oil RB 68EP or equivalent Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input Compressor Overload Protector HPA-522A Throttling Method Capillary Set Temperature Range...
  • Page 13 Service Manual GWH18AFCXD-K3NNA1B GWH18AFCXD-K3NNA1B Model GWH18AFCXD-K3NNA2B GWH18AFCXD-K3NNA3B GWH18AFCXD-K3NNA4B CA348007900 CA348007901 Product Code CA363001700 CA362003000 CA371001700 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity 4800 Heating Capacity 5158 Cooling Power Input 1477 Heating Power Input 1428 Cooling Power Current 6.62...
  • Page 14 Service Manual Outdoor Unit Model GWH18AGCXD-K3NNA1B/O Outdoor Unit Product Code CA385W10100 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO. LTD. Compressor Model QXA-D19F070 Compressor Oil ATMOS-RB68EP or equivalent Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input 1510 Compressor Overload Protector UP3-06 Throttling Method Capillary...
  • Page 15 Service Manual Model GWH18AFDXD-K3NNA3A Product Code CA343003600 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity 5275 Heating Capacity 5700 Cooling Power Input 1600 Heating Power Input 1500 Cooling Power Current Heating Power Current Rated Input 2050 Rated Cooling Current 10.5...
  • Page 16 Service Manual Outdoor Unit Model GWH18QDXD-K3NNA6A/O Outdoor Unit Product Code CA427W15500 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO. LTD. Compressor Model QXA-D19F070 Compressor Oil ATMOS-RB68EP or equivalent Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input 1510 Compressor Overload Protector UP3-06 Throttling Method Capillary...
  • Page 17 Service Manual GWH24AFDXE-K3NNA1A GWH24AFDXE-K3NNA2A Model GWH24AFDXE-K3NNA3A GWH24AFDXE-K3NNA4A CA348007800/CA348007801 CA363001600 Product Code CA362002900 CA371001800 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity 6155 Heating Capacity 6700 Cooling Power Input 1917 Heating Power Input 1856 Cooling Power Current 8.89 Heating Power Current Rated Input...
  • Page 18 Service Manual Outdoor Unit Model GWH24AADXE-K3NNA1A/O Outdoor Unit Product Code CA476W11400 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO. LTD. Compressor Model QXA-D232F070 Compressor Oil FW68DA or equivalent Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input Compressor Overload Protector Throttling Method Capillary Set Temperature Range ºC...
  • Page 19 Service Manual Model GWH24AFE-K3NNA3G Product Code CA362002800 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity 6500 Heating Capacity 6500 Cooling Power Input 1970 Heating Power Input 1800 Cooling Power Current Heating Power Current Rated Input 2520 Rated Cooling Current Rated Heating Current...
  • Page 20 Service Manual Outdoor Unit Model GWH24QE-K3NNB4G/O Outdoor Unit Product Code CA434W19100 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO., LTD. Compressor Model QXA-E24H050 Compressor Oil RB68EP or equivalent or FV50S or equivalent Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input 1930 Compressor Overload Protector UP3-09...
  • Page 21 Service Manual GWH28AFEXF-K3NNA4A GWH28AFEXF-K3NNA1A Model GWH28AFEXF-K3NNA2A GWH28AFEXF-K3NNA3A CA371001900 CA348008200 Product Code CA363001900 CA362003200 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity 8500 Heating Capacity 8900 Cooling Power Input 2615 Heating Power Input 2465 Cooling Power Current Heating Power Current 11.5 Rated Input...
  • Page 22 Service Manual Outdoor Unit Model GWH28AGEXF-K3NNA1A/O Outdoor Unit Product Code CA385W12400 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO., LTD. Compressor Model QXAS-E305H070 Compressor Oil RB68EP or FVC68D or FV50S or equivalent Compressor Type Rotary Compressor LRA. Compressor RLA 11.4 Compressor Power Input 2520 Compressor Overload Protector HPD-456...
  • Page 23 Service Manual Model GWH36AFE-K3NNA2A GWH36AFE-K3NNA3A Product Code CA363001500 CA362002700 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity 9500 Heating Capacity 9800 Cooling Power Input 2960 Heating Power Input 3050 Cooling Power Current 13.1 Heating Power Current 13.5 Rated Input 3670...
  • Page 24 Service Manual Outdoor Unit Model GWH36QE-K3NNB4A/O Outdoor Unit Product Code CA434W19200 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO., LTD. Compressor Model QXAS-F356N450 Compressor Oil Ze-GLES RB68EP or FVC 68D or FV 50S or equivalent Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input 2980 Compressor Overload Protector...

  • Page 25: Capacity Variation Ratio According To Temperature

    Service Manual 2.2 Capacity Variation Ratio According to Temperature 07K ~ 24K Heating operation ambient temperature range is -15°C~24°C Cooling Heatling Cooling: Heating: Condition Heatin g Condition Cooling Indoor:DB20 °C /WB15°C Indoor:DB27°C/WB19°C Indoor air flow: Super High Indoor air flow:Super High Pipe length: 5m Pipe length:5m 32 33 34 35 36 37 38 39...

  • Page 26: Cooling And Heating Data Sheet In Rated Frequency

    Service Manual 2.3 Cooling and Heating Data Sheet in Rated Frequency Cooling: Rated cooling condition(°C) Pressure of gas pipe connecting Inlet and outlet pipe temperature of (DB/WB) indoor and outdoor unit heat exchanger Fan speed of Fan speed of Model indoor unit outdoor unit Indoor...

  • Page 27: Outline Dimension Diagram

    3. Outline Dimension Diagram Service Manual 3.1 Indoor Unit AFA/AFB Φ55 Φ55 Φ55 Φ55 Φ70 Φ70 Unit:mm Model 1017 127.5 204.5 1135 215.5 234.5 Technical Information...

  • Page 28: Outdoor Unit

    Service Manual 3.2 Outdoor Unit GWH07AGAXA-K3NNA1A/O GWH09AGAXA-K3NNA1A/O Unit:mm GWH12AGBXB-K3NNA1B/O Unit:mm Technical Information...
  • Page 29 Service Manual GWH18AGCXD-K3NNA1B/O GWH18QDXD-K3NNA6A/O Unit:mm GWH24AADXE-K3NNA1A/O Unit:mm Technical Information...
  • Page 30 Service Manual GWH28AGEXF-K3NNA1A/O Unit:mm GWH24QE-K3NNB4G/O Unit: mm Technical Information...
  • Page 31 Service Manual GWH36QE-K3NNB4A/O Unit:mm Technical Information...

  • Page 32: Refrigerant System Diagram

    4. Refrigerant System Diagram COOLING Service Manual Outdoor unit Indoor unit Gas pipe side Valve 4-Way valve Di s charge Heat Suction Accumlator exchanger Compressor (evaporator) Heat exchanger Liquid pipe (condenser) side Valve Strainer Capillary Strainer COOLING HEATING Connection pipe specification: Liquid pipe: 1/4"...

  • Page 33: Electrical Part

    5. Electrical Part Service Manual 5.1 Wiring Diagram ● Instruction Symbol Symbol Color Symbol Symbol Color Symbol Name White Green Jumper cap Yellow Brown COMP Compressor Blue Grounding wire YEGN Yellow/Green Black Violet Orange Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model. ●...
  • Page 34 Service Manual GWH07AFAXA-K3NNA1A/I GWH09AFAXA-K3NNA1A/I GWH12AFBXB-K3NNA1B/I GWH18AFCXD-K3NNA1B/I(CA348N07901) POWER BU(WH) RECEIVER AND FAN MOTOR TUBE TEMP. ROOM TEMP. DISPLAY BOARD SENSOR SENSOR BN(BK) YEGN(GN) DISPLAY EARTH-PLATE YEGN YEGN DISP1 DISP2 T-SENSOR EVAPORATOR PRINTED CIRCUIT BOARD N(1) JUMP AC-L K1(K3) COMP 4WAY SWING-UD...
  • Page 35 Service Manual GWH24AFE-K3NNA3G/I GWH28AFEXF-K3NNA4A/I GWH28AFEXF-K3NNA2A/I GWH28AFEXF-K3NNA3A/I BN(BK) ROOM TUBE BU(WH) RECEIVER AND TEMP. TEMP. DISPLAY BOARD YEGN(GN) SENSOR SENSOR DISPLAY POWER EARTH-PLATE YEGN YEGN DISP2 L101 EVAPORATOR T-SENSOR DISP1 N(1) COMP JUMP L(AC-L) PRINTED CIRCUIT BOARD 4WAY (SWING) SWING-UD OFAN CONNECTING TERMINAL CABLE...
  • Page 36 Service Manual GWH36AFE-K3NNA2A/I GWH36AFE-K3NNA3A/I TUBE ROOM RECEIVER AND TEMP. TEMP. DISPLAY BOARD SENSOR SENSOR DISPLAY TERMINAL T-SENSOR DISP1 DISP2 BLOCK N(1) COM-OUT JUMP PRINTED CIRCUIT BOARD L(AC-L) YEGN CONNECTING YEGN CABLE SWING-UD EVAPORATOR 63632220 STEPPING FAN MOTOR MOTOR Technical Information...
  • Page 37 Service Manual ● Outdoor Unit GWH07AGAXA-K3NNA1A/O GWH09AGAXA-K3NNA1A/O GWH12AGBXB-K3NNA1B/O 60000706130202 GWH18AGCXD-K3NNA1B/O GWH18QDXD-K3NNA6A/O COMP. COMP R(M) FAN MOTOR CAP. (BU) YEGN CAP. N(1) 4-WAY VALVE TERMINAL BLOCK 600007063844 Technical Information...
  • Page 38 Service Manual GWH24AADXE-K3NNA1A/O COMP. COMP R(M) FAN MOTOR CAP. (BU) YEGN CAP. N(1) 4-WAY VALVE TERMINAL BLOCK 60000706384401 GWH28AGEXF-K3NNA1A/O COMP. FAN MOTOR COMP R(M) BU BU (BK) CAP. CAP. YEGN L1/6 A2/1 T1/4 N(1) A1/0 4-WAY VALVE TERMINAL BLOCK 60000706168204 Technical Information...
  • Page 39 Service Manual GWH24QE-K3NNB4G/O NOTE:Motor COMP. ground only FAN MOTOR COMP applies to the iron YEGN shell motor. R(M) BK YE (BK) CAP. CAP. YEGN L1/6 A2/1 T1/4 N(1) A1/0 4-WAY VALVE TERMINAL BLOCK 600007061682 GWH36QE-K3NNB4A/O SHIELDING OUTTUBE 4-WAY VALVE TRANSFORMER YEGN RESISTOR TEMP.

  • Page 40: Pcb Printed Diagram

    Service Manual 5.2 PCB Printed Diagram ● Indoor Unit 07/09/12K Name Name Wiring terminal of 4-way valve Wiring terminal of compressor (heat pump unit) Fuse Auto button Fan capacitor Feedback wiring terminal of PG motor Wiring terminal of up&down swing Neutral wire terminal of cold plasma motor Terminal of neutral wire...
  • Page 41 Service Manual 18K(AFC)/24K(AFE) Top view Compressor Interface of p Interface of p Interface of c (only for the PG motor int Terminal of o Interface of 4 mode with th Interface of c (only for the Up&down sw PG motor fee Left&right sw Jumper cap Temperature...
  • Page 42 Service Manual 18K(AFD)/24K(AFD)/28K Name Name Compressor interface Left&right swing interface Interface of live wire Needle stand for WiFi Fuse Interface of temperature sensor Neutral wire Interface of gate control Interface of health function neutral wire Interface of display board (only for the mode with this function) Interface of PG motor Jumper cap Interface of live wire of cold plasma...
  • Page 43 Service Manual Name Name Terminal of live wire used for supplying 10 Interface of PG feedback power for outdoor unit Live wire terminal Interface of gate-control Fuse 12 left&right swing interface Interface of health function neutral wire 13 Interface of temperature sensor Neutral wire 14 Wifi interface Terminal of fan...
  • Page 44 Service Manual ● Outdoor Unit GWH36QE-K3NNB4A/O Name Name Input of transformer Terminal for outdoor pipe temp sensor Terminal for 4-way valve Terminal for communication wire Terminal for outdoor fan Protective tube Terminal for compressor Terminal for neutral wire Output of transformer Terminal for live wire Current mutual-inductor(only for the model Terminal for high pressure protection...

  • Page 45: Function And Control

    6. Function and Control Service Manual 6.1 Remote Controller Introduction of YAW1F Buttons on remote controller Introduction for buttons on remote controller NOTE: ● This is a general use remote controller, it could be used for the air conditioners with multifunction; For some function, which the model doesn't have, if press the corresponding button on the remote controller that the unit will keep the original running status.
  • Page 46 Service Manual button Under Cool, Dry or Heat mode, press this button to turn on Sleep function. Press this button to turn on the display's light and press this button Press this button again to cancel Sleep function. again to turn off the display's light. Under Fan and Auto modes, this function is unavailable.
  • Page 47 Service Manual Replacement of batteries in remote controller perform fast cooling or fast heating. There may be some noise, which is the sound of flowing liquid or thermal expansion or cold shrinkage. The air conditioner may blow cool or warm air, which is a normal phenomenon.

  • Page 48: Remote Controller Introduction Of Yap1F

    Service Manual I feel Set fan speed 6.2 Remote Controller Introduction of YAP1F Turbo mode Send signal Notice: Auto mode 1.This is a general use remote controller. It could be used for the air conditioner with multifunction. For the functions which the model Cool mode doesn't have, if press the corresponding button on the remote controller, the unit will keep the original running status.
  • Page 49 Service Manual / " "button to adjust fan blowing angle. (Cooling only unit won't from off to , if press this button again 2s later, status receive heating mode signal. If setting heat mode with remote will switch to off status directly; if press this button again within controller, press ON/OFF button can’t start up the unit).
  • Page 50 Service Manual displaying. Cancel T-OFF. Under the condition that T-OFF is started up, press "T-OFF" button to cancel it. button Note: Pressing this button in COOL or DRY mode, the icon " " is ● U n d e r o n a n d o ff s t a t u s , y o u c a n s e t T- O F F o r T- O N displayed and the indoor fan will continue operation for a while in simultaneously.
  • Page 51 Service Manual indoor set temperature. Temperature display switchover function ● It's defaulted to display set temperature when turning on the Under OFF status, press " " and "MODE" buttons simultaneously unit. There is no display in the remote controller. to switch temperature display between °C and °F. ●...

  • Page 52: Brief Description Of Modes And Functions

    Service Manual 6.3 Brief Description of Modes and Functions 1. Summary (1) Buzzer When the controller is energized or receives signal from button (emergency operation switch on air conditioner) or remote control- ler, the buzzer will give out a beep. (2) Temperature parameter ◆...
  • Page 53 Service Manual ◆ When Tamb. >Tset+2℃ , the system starts drying and cooling. ① Operation conditioner and process for heating mode In this case, the compressor and the ODU fan motor operate, and ◆ When Tamb-Tcompensation≤Tpreset-1 ℃ , unit will operate in the IDU fan motor operates at low speed.
  • Page 54 Service Manual During operation of IDU fan motor, if controller detected that the If remote controller is lost or damaged, please use aux. button to rotation speed of IDU fan motor less than 300/min or stop rotation, turn on or turn off the air conditioner. The operation in details is as the motor operates abnormally.
  • Page 55 Service Manual ② If swing function is set when turning on the unit, the horizontal louver will swing between L and D. Horizontal louver has 7 swing statuses: ◆ Stay at position L: control by remote controller: ◆ Stay at position A: control by remote controller: ◆...

  • Page 56: Part Ii : Installation And Maintenance

    7. Notes for Installation and Maintenance Service Manual Safety Precautions: Important! be installed in the circuit. The air switch should be all-pole parting and the contact parting distance should be more than 3mm. Please read the safety precautions carefully before installa- tion and maintenance.
  • Page 57 Service Manual Safety Precautions for Installing and Relocating the Unit: To ensure safety, please be mindful of the following precautions. WARNINGS 1. When installing or relocating the unit, be sure to keep the If compressor starts running when stop valve is open and refrigerant circuit free from air or substances other than the connection pipe is not yet connected, air will be sucked in and specified refrigerant.
  • Page 58 Service Manual Main Tools for Installation and Maintenance Level meter Measuring tape Screw driver Impact drill Drill head Electric drill Electroprobe Universal meter Inner hexagon Electronic Torque wrench Open-end wrench spanner leakage detector Vacuum pump Pressure meter Pipe pliers Pipe pliers Pipe cutter Pipe expander Pipe bender...

  • Page 59: Installation

    8. Installation Service Manual 8.1 Installation Dimension Diagram Space to the wall At least 15cm Space to the wall At least 15cm Space to the obstruction At least 50cm Drainage pipe Installation and Maintenance...
  • Page 60 Service Manual Installation Procedures Start installation Preparation before installation Read the requirements select installation Prepare tools for electric connection location Select indoor unit Select outdoor unit installation location installation location Install wall-mounting Install the support of outdoor unit (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor Fix outdoor unit...

  • Page 61: Installation Parts-Checking

    Service Manual 8.2 Installation Parts-checking (3) The location should be able to withstand the weight of outdoor unit. Name (4) Make sure that the installation follows the requirement of Indoor unit installation dimension diagram. Outdoor unit (5) Select a location which is out of reach for children and far away from animals or plants.
  • Page 62 Service Manual 2. Install Wall-mounting Frame 5. Connect the Pipe of Indoor Unit (1) Hang the wall-mounting frame on the wall; adjust it in (1) Aim the pipe joint at the corresponding bellmouth. (As show in horizontal position with the level meter and then point out the Fig.5) screw fixing holes on the wall.

  • Page 63: Installation Of Outdoor Unit

    Service Manual 8. Bind up Pipe (1) Bind up the connection pipe, power cord and drain hose with Drain hose the band. (As show in Fig.14) (2) Reserve a certain length of drain hose and power cord for installation when binding them. When binding to a certain degree, separate the indoor power and then separate the drain hose.
  • Page 64 Service Manual Note: (3) Pretightening the union nut with hand. (1) Select installation location according to the house structure. (4) Tighten the union nut with torque wrench . (2) Fix the support of outdoor unit on the selected location with Refer to the following table for wrench moment of force: expansion screws.

  • Page 65: Vacuum Pumping And Leak Detection

    Service Manual 8.8 Check after Installation and Test (2) Slant the drain hose slightly downwards. The drain hose cant be curved, raised and fluctuant, etc.(As show in Fig.26) operation (3) The water outlet cant be placed in water in order to drain smoothly.(As show in Fig.27) 1.

  • Page 66: Maintenance

    9. Maintenance Service Manual 9.1 Error Code List Display Method of Indoor Unit Malfunction Name A/C status Possible Causes Dual-8 Code Display 1. The wiring terminal between indoor The unit will stop operation as it reaches ambient temperature sensor and controller the temperature point.
  • Page 67 Service Manual Display Method of Indoor Unit Malfunction Name A/C status Possible Causes Dual-8 Code Display 1. The wiring terminal between outdoor condenser temperature sensor and The unit will stop operation as it reaches maiboard is loosened or poorly contacted. the temperature point.
  • Page 68 Service Manual Display Method of Indoor Unit Malfunction Name A/C status Possible Causes Dual-8 Code Display 1. The communication line is not connected tightly or poorly contacted. Poor contact of any line may cause Communi- During cooling operation, compressor stops communication malfunction.

  • Page 69: Procedure Of Troubleshooting

    Service Manual 9.2 Procedure of Troubleshooting 1. Malfunction of Temperature Sensor F1, F2 Main detection points: (1) connection terminal (2) temperature sensor (3) main board Malfunction diagnosis process: Start Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? Insert the temperature sensor tightly...
  • Page 70 Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 Main detection points: ● SmoothlyIs the control terminal of PG motor connected tightly? ● SmoothlyIs the feedback interface of PG motor connected tightly? ● The fan motor can't operate? ●...
  • Page 71 Service Manual 3. Malfunction of Protection of Jumper Cap C5 Main detection points: ● Is there jumper cap on the mainboard? ● Is the jumper cap inserted correctly and tightly? ● The jumper is broken? ● The motor is broken? ●...
  • Page 72 Service Manual 4. Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8 Main detection points: ● Instant energization afte de-energization while the capacitordischarges slowly? ● The zero-cross detectioncircuit of the mainboard is defined abnormal? Malfunction diagnosis process: Start Turn power off for 1minute,the turn...
  • Page 73 Service Manual 5. High pressure protection (E1) Start Are the display panel and main board Connect the display panel with the main board well Malfunction is eliminated. connected tightly? Are the OVC terminal on the main board connected Connect the OVC terminal on the main board with the high well with the high pressure switch on the complete Malfunction is eliminated.
  • Page 74 Service Manual 6. Low pressure protection of compressor (E3) Start Is the terminal Re-insert it tightly of low pressure switch to ensure reliable inserted well ? contact. Is the malfunction eliminated ? Is the higher than the acting Add refrigerant . value of the low pressure switch? Is the...
  • Page 75 Service Manual 7. Overload protection of compressor H3, high discharge temperature protection of compressor E4 (AP1 hereinafter refers to the control board of the outdoor unit) Main detection points: (1) electronic expansion valve (2) expansion valve terminal (3) charging amount of refrigerant (4) overload protector Malfunction diagnosis process: After the unit de-energized...
  • Page 76 Service Manual 8. Malfunction of Overcurrent Protection E5 Main detection points: ● Is the supply voltage unstable with big fluctuation? ● Is the supply voltage too low with overload? ● Hardware trouble? Malfunction diagnosis process: Start Normal fluctuation should be within 10 % Is malfunction Is the supply voltage unstable of the rated voltage on the nameplate...
  • Page 77 Service Manual 9. Communication malfunction E6 Main detection points: ● Check if the connection wire and the built-in wiring of indoor and outdoor unit are connected well and without damage; ● If the communication circuit of indoor mainboard is damaged? If the communication circuit of outdoor mainboard (AP1) is damaged? Malfunction diagnosis process: Start If the unit is operation...
  • Page 78 Service Manual 10. High temperature and overload protection (E8)(AP1 below means control board of outdoor unit) Main detection points: (1) outdoor temperature (2) fan (3)air inlet and air outlet of indoor/outdoor unit Malfunction diagnosis process: Overload protection, high temperature prevention protection Normal protection.

  • Page 79: Troubleshooting For Normal Malfunction

    Service Manual 9.3 Troubleshooting for Normal Malfunction 1. Air Conditioner can't be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether it's due to power failure. If yes, No power supply, or poor connection After energization, operation indicator isnt bright wait for power recovery.
  • Page 80 Service Manual 4. ODU Fan Motor can't Operate Possible causes Discriminating method (air conditioner status) Troubleshooting Connect wires according to wiring diagram to Wrong wire connection, or poor Check the wiring status according to circuit diagram make sure all wiring terminals are connected connection firmly Measure the capacity of fan capacitor with an...

  • Page 81: Exploded View And Parts List

    10. Exploded View and Parts List Service Manual 10.1 Indoor Unit AFA/AFB The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 82 Service Manual Description Description Connecting pipe clamp Front Panel Rubber Plug (Water Tray) Display Board Filter Sub-Assy Stepping Motor Front Case Assy Crank Drainage Hose Axile Bush Helicoid Tongue Electric Box Cover2 Electric Box Assy Left Axile Bush Rear Case assy Terminal Board Cross Flow Fan Main Board...
  • Page 83 Service Manual The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 84 Service Manual Description Description Fan Motor Front Panel Wall Mounting Frame Display Board Filter Sub-Assy Cross Flow Fan Screw Cover Evaporator Assy Cold Plasma Generator Electric Box Cover Sub-Assy Front Case Assy Helicoid Tongue Left Axile Bush Shield Cover of Electric Box Cover Main Board Rear Case assy Electric Box Cover...
  • Page 85 Service Manual The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 86 Service Manual Description Description Crank Front Panel Guide Louver Filter Sub-Assy Axile Bush Screw Cover Right Side Plate Left Side Plate Decorative Strip(Right) Decorative Strip(Left) Shield Cover of Electric Box Cover 2 Front Case Electric Box Cover2 Air Louver(Manual) Electric Box Helicoid Tongue Side plate (electric box) Left Axile Bush...
  • Page 87 Service Manual The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 88 Service Manual Description Description Front Panel Axile Bush Right Side Plate Filter Sub-Assy Decorative Strip(Right) Screw Cover Shield Cover of Electric Box Cover 2 Left Side Plate Electric Box Cover2 Decorative Strip(Left) Electric Box Front Case Side plate (electric box) Air Louver 1 Helicoid Tongue Terminal Board...

  • Page 89: Outdoor Unit

    Service Manual 10.2 Outdoor Unit 07K/09K The component picture is only for reference; please refer to the actual product. Description Description Description Top Cover Sub-Assy Earthing Plate Sub-assy Cabinet Top cover Terminal Board Fan Motor Capacitor CBB61S Handle Front Grill Capacitor CBB65 Right Side Plate Axial Flow Fan...
  • Page 90 Service Manual The component picture is only for reference; please refer to the actual product. Description Description Description Top Cover Assy Right Side Plate Lelt Side Plate Condenser Assy Valve Support Clapboard Rear Grill Compressor and Fittings Electric Box Assy 4-way Valve Assy Chassis Sub-assy Terminal Board...

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