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Summary of Contents for Kinghome KW09HUCA4D
- Page 1 AIR CONDITIONER INSTRUCTION MANUAL Models: KW09HUCA4D KW12HUCA4D KW18HUCA4D (Refrigerant R410A)
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Page 2: Table Of Contents
Service Manual Table of Contents Part Ⅰ : Technical Information ...............1 1. Summary ........................1 2.1 Specification Sheet ......................2 2.2 Operation Characteristic Curve ..................8 2.3 Capacity Variation Ratio According to Temperature ............9 2.4 Cooling and Heating Data Sheet in Rated Frequency .............9 2.5 Noise Curve ........................10 3. - Page 3 Service Manual 9. Maintenance ......................46 9.1 Error Code List .......................46 9.2 Procedure of Troubleshooting ..................52 9.3 Troubleshooting for Normal Malfunction .................74 10. Exploded View and Parts List ..............76 10.1 Indoor Unit ........................76 10.2 Outdoor Unit .........................78 11. Removal Procedure ..................82 11.1 Removal Procedure of Indoor Unit ................82 11.2 Removal Procedure of Outdoor Unit ................91 Appendix:...
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Page 4: Part Ⅰ : Technical Information
Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit: KW09HUCA4DI KW12HUCA4DI KW18HUCA4DI Outdoor Unit: KW09HUCA4DO KW12HUCA4DO KW18HUCA4DO Remote Controller: SAA1FB1F Technical Information... -
Page 5: Specification Sheet
Service Manual 2.1 Specification Sheet Model KW09HUCA4D Product Code CB264001004_L74318 Rated Voltage 208/230 Power Supply Rated Frequency Phases Power Supply Mode Outdoor Cooling Capacity(Min~Max) Btu/h 9000(1535~9554) Heating Capacity(Min~Max) Btu/h 9000(2300~9895) Cooling Power Input(Min~Max) 570(50~1400) Heating Power Input(Min~Max) 630(200~1500) Cooling Power Current... - Page 6 Service Manual Model of Outdoor Unit KW09HUCA4DO Outdoor Unit Product Code CB264W01000_L74318 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD. Compressor Model QXAT-B121zE070 Compressor Oil FV50S Compressor Type Rotary Compressor L.R.A. Compressor RLA Compressor Power Input 1070 Overload Protector 1NT11L-6233/HPC115/95/KSD115ºC Throttling Method Electron expansion valve Operation temp ºF...
- Page 7 Service Manual Model KW12HUCA4D Product Code CB264001104_L74318 Rated Voltage 208/230 Power Supply Rated Frequency Phases Power Supply Mode Outdoor Cooling Capacity(Min~Max) Btu/h 12000(2900~13307) Heating Capacity(Min~Max) Btu/h 13000(3071~13307) Cooling Power Input(Min~Max) 940(75~1500) Heating Power Input(Min~Max) 1220(250~1600) Cooling Power Current Heating Power Current Rated Input 1600 Rated Current...
- Page 8 Service Manual Model of Outdoor Unit KW12HUCA4DO Outdoor Unit Product Code CB264W01100_L74318 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD. Compressor Model QXAT-B096zE070 Compressor Oil 68EP Compressor Type Rotary Compressor L.R.A. Compressor RLA Compressor Power Input Overload Protector 1NT11L-6233/HPC115/95U1/KSD115ºC Throttling Method Electron expansion valve Operation temp ºF...
- Page 9 Service Manual Model KW18HUCA4D Product Code CB264000904_L74318 Rated Voltage 208/230 Power Supply Rated Frequency Phases Power Supply Mode Outdoor Cooling Capacity(Min~Max) Btu/h 18000(4436~20472) Heating Capacity(Min~Max) Btu/h 19000(3753~19107) Cooling Power Input(Min~Max) 1440(350~2400) Heating Power Input(Min~Max) 1800(350~2500) Cooling Power Current Heating Power Current Rated Input 2500 Rated Current...
- Page 10 Service Manual Model of Outdoor Unit KW18HUCA4DO Outdoor Unit Product Code CB264W00900_L74318 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD. Compressor Model QXAT-D20zF030 Compressor Oil RB68EP Compressor Type Rotary Compressor L.R.A. Compressor RLA 14.5 Compressor Power Input 2443 Overload Protector 1NT11L-6233/HPC115/95/KSD115ºC Throttling Method Electron expansion valve Operation temp...
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Page 11: Operation Characteristic Curve
Service Manual 2.2 Operation Characteristic Curve 09K/12K Cooling Cooling Heating Heating Condition Condition Indoor:DB 68°F Indoor:DB81°F WB66°F Indoor air flow:Super High Indoor air flow: Super High Pipe length:24.6 ft Pipe length:24.6 ft Compressor Speed(rps) Compressor Speed(rps) n i l Cooling Heating Cooling Heating... -
Page 12: Capacity Variation Ratio According To Temperature
Service Manual 2.3 Capacity Variation Ratio According to Temperature Cooling Heating Condition Condition Indoor:DB 68°F Indoor:DB81°F WB66°F Indoor air flow:Super High Indoor air flow: Super High Pipe length:24.6 ft Pipe length:24.6 ft 89.6 100.4 107.6 118.4 17.6 44.6 Outdoor temp(°F) Outdoor temp(°F) 2.4 Cooling and Heating Data Sheet in Rated Frequency Cooling:... -
Page 13: Noise Curve
Service Manual 2.5 Noise Curve Indoor side noise Outdoor side noise 09K/12K 09K/12K Heating Cooling Super Middle Middle Super Compressor frequency(Hz) High Middle High High Indoor fan motor rotating speed Heating Cooling Compressor frequency(Hz) Super Middle Middle Super High Middle High High Indoor fan motor rotating speed... -
Page 14: Outline Dimension Diagram
Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 3 1/2 7 5/16 Unit:inch 3 1/8 Model 09K/12K 37 13/16 12 5/8 Φ2 3/16 37 13/16 12 5/8 Φ2 3/4 Φ55 Φ55 Technical Information... -
Page 15: Outdoor Unit
Service Manual 3.2 Outdoor Unit 32 3/16 09K/12K 35 3/8 14 7/8 21 2/3 Unit:inch 14 9/16 16 13/16 39 3/8 Unit:inch Technical Information... -
Page 16: Refrigerant System Diagram
Service Manual 4. Refrigerant System Diagram INDOOR UNIT OUTDOOR UNIT GAS SIDE 3-WAY VALVE 4-Way valve Discharge HEAT EXCHANGE (EVAPORATOR) Accumlator Suction COMPRESSOR HEAT EXCHANGE (CONDENSER) Intercooler LIQUID SIDE Electron Strainer Strainer Strainer Capillary Strainer 2-WAY VALVE expansion valve COOLING HEATING Connection pipe specification: Liquid : 1/4"... -
Page 17: Electrical Part
Service Manual 5. Electrical Part 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 18 Service Manual ● Outdoor Unit KW09HUCA4DO KW12HUCA4DO N(1) 63610000445 KW18HUCA4DO 63610000440 These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit. Technical Information...
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Page 19: Pcb Printed Diagram
Service Manual 5.2 PCB Printed Diagram Indoor Unit ● Top view Interface of neutral wire Interface of DC motor Interface of WIFI Display interface Interface of left&right Interface of communication wire Interface of live wire Up&down swing 3 swing for neutral wire and live wire Interface of fuse Tube temperature sensor Up&down swing 2... - Page 20 Service Manual Outdoor Unit 09K/12K ● Top view 14 15 ● Bottom view Technical Information...
- Page 21 Service Manual ● Top view Terminal of compressor wire Terminal of low pressure protection Terminal of compressor overload protection Te r m i n a l o f o u t d o o r temperature sensor Terminal of outdoor fan Terminal of 4-way valve Communication wire with indoor unit...
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Page 22: Function And Control
Service Manual 6. Function and Control 6.1 Remote Controller Introduction Specialties note Matching instructions This model adopts RF remote control. The remote controller shall be matched with the air conditioner before operation, otherwise the remote control will be invalid. Before operation, please read the instructions in this page carefully and then do the corresponding matching operation. - Page 23 Service Manual Introduction for Icons on Display Screen Set fan speed Send signal Operation mode battery power Auto mode humidity functions WIFI Cool mode INTELLIGENT Temp.display type Healthy mode Dry mode Set temperature Fan mode Heat mode Up & down swing Set time Left &...
- Page 24 Service Manual button Under simple swing mode, press this button can turn on (display " " icon ) or turn off ( not display " " icon) left&right swing function. Under OFF status, press "+" button and " " button simultaneously can switch between simple swing mode and fixed swing mode. During switching time, “...
- Page 25 Service Manual Note: ● Under on and off status, you can set T-OFF or T-ON simultaneously. ● Before setting T-ON or T-OFF, please adjust the clock time. ● After starting up T-ON or T-OFF, set the constant circulating valid. After that, air conditioner will be turned on or turned off according to setting time.
- Page 26 Service Manual 15. LIGHT button Pressing this button to turn off display light on indoor unit. Press this button again to turn on display light. 16. SLEEP button ● Pressing this button can select Sleep 1, Sleep 2,Sleep 3, Sleep 4 or cancel Sleep circularly as below: cancel ●In Sleep 1 and Sleep 2, the air conditioner will run according to a group of presetting temperature curves.
- Page 27 Service Manual Energy-saving function Under cooling mode, press "TEMP" and "CLOCK" buttons simultaneously to start up or turn off energy-saving function. When energy- saving function is started up, "SE" will be shown on remote controller, and air conditioner will adjust the set temperature automatically according to ex-factory setting to reach to the best energy-saving effect.
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Page 28: Gree+ App Operation Manual
Service Manual 6.2 GREE+ App Operation Manual Control Flow Chart Internet Gree Cloud Gree Home Wi-Fi Cellular/ intelligent home Other Wi-FI appliances Home wireless router Home Wi-Fi GREE+ APP Operating Systems Requirement for Users smart phone: iOS system Android system Support iOS7.0 and Support Android 4.4 and above version... -
Page 29: Ewpe Smart App Operation Manual
Service Manual 6.3 Ewpe Smart App Operation Manual Control Flow Chart Internet Cloud intelligent Cellular/ Home Wi-Fi home Other Wi-FI appliances Home wireless router Home Wi-Fi Operating Systems Requirement for Users smart phone: iOS system Android system Support iOS7.0 and Support Android 4.4 and above version above version... -
Page 30: Brief Description Of Modes And Functions
Service Manual 6.4 Brief Description of Modes and Functions Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Indoor unit 1.This controller includes functions as below (1) Auto; (2) Cooling; (3) Dry; (4) Fan; (5) Heating 2.Control object of controller (1)Indoor unit : Cooling mode: seven kinds of fan speed in total (including quiet, fan 1, fan 2, fan 3, fan 4, fan 5, turbo). - Page 31 Service Manual Display table for error status Error name Error definition Dual-8 code display Freon recovery mode Operation status is displayed immediately Malfunction of indoor fan Malfunction of hardware Malfunction of middle temperature sensor of indoor evaporator Malfunction of hardware Malfunction of indoor ambient temperature sensor Malfunction of hardware Communication malfunction between indoor unit and outdoor unit...
- Page 32 Service Manual 5.Other control (1)Timer function Timer ON: Timer ON can be set under off status. After time is over, the unit will operate at original setting mode. The timer interval is 0.5h and the timer setting range is 05~24h. Timer OFF: Timer OFF can be set under on status.
- Page 33 Service Manual of swing blade, there are upper swing and lower swing. When selecting fixed-angle swing, you can select 5 kinds of swing position for blowing fan; After selecting free swing, lower swing for heating mode and upper swing for cooling mode. Horizontal louver postion diagrammatic sketch Initial stauts after reset is finished Lower swing...
- Page 34 Service Manual (5)Error 5: Dual-8 nixie tube of display board displays “H6”. Solution: The feedback wire of indoor fan has not been firmly connected to the controller or the indoor fan motor fails to work, please reinsert the feedback line of indoor fan or replace the main board of controller, or replace the motor. (6)Error 6: Dul-8 nixie tube of display board displays “FC”.
- Page 35 Service Manual Outdoor unit 1. System function 1.1 Cooling mode 1.1.1 Working condition and process for cooling When the compressor is at off status, turn on the unit under cooling mode. When indoor unit reaches the condition of turning on the unit, the unit operates under cooling mode.Meanwhile, indoor fan, outdoor fan and compressor stops operation.
- Page 36 Service Manual 2.2 Delay protection of compressor When compressor is stopped, it needs 3min to restart up the compressor. Once compressor is started up, compressor wont stop operate within 6in according to the change of temperature. 2.3 Discharge temperature protection of compressor (1)When TBdischarge B≥98℃...
- Page 37 Service Manual 1. Compensation function of input parameters According to the structure of wall-mounting unit, considering the comfortability for operation, indoor ambient temperature when the compressor is at OFF status is higher than set temperature under heating mode. 2. Control of detecting the availability of parameters For ensuring the safety and reliability of operation, please insert the outdoor discharge temperature sensor into the corresponding temperature sensor bushing to make sure that the control system can detect system discharge temperature accurately.
- Page 38 Service Manual 11.2 Under cooling or drying mode, if T <6, the operation frequency of compressor may increase or decrease; inner tube 11.2.1 If the unit is stopped because of freeze protection for 6 times successively, it can’t resume operation automatically and the malfunction will be displayed continuously, which can only be resumed by pressing ON/OFF button.
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Page 39: Part Ⅱ : Installation And Maintenance
Service Manual Part Ⅱ : Installation and Maintenance 7. Notes for Installation and Maintenance 10. If the power cord or connection wire is not long enough, Safety Precautions: please get the specialized power cord or connection wire from the manufacture or distributor. Prohibit prolong the wire Important! by yourself. - Page 40 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 refrigerant circuit free from air or substances other than the specified refrigerant.
- Page 41 Service Manual Main Tools for Installation and Maintenance 1. Level meter, measuring tape 2. Screw driver 3. Impact drill, drill head, electric drill 4. Electroprobe 5. Universal meter 6. Torque wrench, open-end wrench, inner hexagon spanner 7. Electronic leakage detector 8.
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Page 42: Installation
Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall At least 5 7/8 inch At least 5 7/8 inch Space to the wall Drainage pipe Installation and Maintenance... - Page 43 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 the support of outdoor unit Install wall-mounting (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor Fix outdoor unit...
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Page 44: Installation Parts-Checking
Service Manual 8.2 Installation Parts-checking 8.4 Electric Connection Requirement Name Name 1. Safety Precaution Indoor unit Sealing gum (1) Must follow the electric safety regulations when installing Outdoor unit Wrapping tape the unit. Support of outdoor (2) According to the local safety regulations, use qualified Connection pipe power supply circuit and air switch. - Page 45 Service Manual in the holes. 5. Connect the Pipe of Indoor Unit (3) Fix the wall-mounting frame on the wall with tapping screws (1) Aim the pipe joint at the corresponding bellmouth.(As show and then check if the frame is firmly installed by in Fig.5) pulling the frame.
- Page 46 Service Manual 7. Connect Wire of Indoor Unit 8. Bind up Pipe (1) Open the panel, remove the screw on the wiring cover and (1) Bind up the connection pipe, power cord and drain hose then take down the cover.(As show in Fig.11) with the band.(As show in Fig.14) (2) Reserve a certain length of drain hose and power cord Screw...
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Page 47: Installation Of Outdoor Unit
Service Manual 8.6 Installation of Outdoor Unit Refer to the following table for wrench moment of force: Tightening torque(N . m) 1. Fix the Support of Outdoor Unit(Select it according to Hex nut diameter(mm) the actual installation situation) Φ6 15~20 Φ9.52 30~40 (1) Select installation location according to the house structure. -
Page 48: Vacuum Pumping And Leak Detection
Service Manual 2. Leakage Detection The drain hos (1) With leakage detector: can't raise upwards Check if there is leakage with leakage detector. (2) With soap water: If leakage detector is not available, please use soap water for leakage detection. Apply soap water at the suspected position Wall and keep the soap water for more than 3min. -
Page 49: Maintenance
Service Manual 9. Maintenance 9.1 Error Code List Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator Possible reasons: High 1. Refrigerant was superabundant; pressure 2. - Page 50 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator When the outdoor unit receive signal of Gathering refrigerant Gathering ,the system will be forced to Nominal cooling mode...
- Page 51 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator Decrease Overload or temperature is too All loads operate normally, frequency high;...
- Page 52 Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
- Page 53 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator During cooling and drying operation, compressor will stop Refer to the malfunction analysis System is while indoor fan will operate;...
- Page 54 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator Malfunction of During cooling and drying phase current operation, compressor will stop detection while indoor fan will operate;...
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Page 55: Procedure Of Troubleshooting
Service Manual 9.2 Procedure of Troubleshooting Indoor unit 1. Malfunction of Temperature Sensor F1, F2 Main detection points: ● Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? ● Is there short circuit due to trip-over of the parts? ●... - Page 56 Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 Start Turn the fan blades by hand under power-off condition Adjust the motor and blade Whether the fan blades assembly so that rotor can run can run smoothly? smoothly.
- Page 57 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 58 Service Manual 4. 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 59 Service Manual 5. Communication Malfunction E6 Start Cut off power supply. Check if connection line of IDU and ODU and the wire inside electric box are correctly connected. Connect the line Correct connection? according to Malfunction eliminated? wiring diagram. Main board matches Match correctly with display board? Main board of Malfunction eliminated?
- Page 60 Service Manual 6. Malfunction of detecting plate(WIFI ) JF Start check if the connection wire are correctly connected detecting Replace the plate with the same model Is malfunction eliminated Replace the mainboard with the same model The end Installation and Maintenance...
- Page 61 Service Manual Outdoor Unit 1. Capacity charging malfunction (outdoor unit malfunction) (AP1 below means control board of outdoor unit) Main detection points: ● Detect if the voltage of L and N terminal of XT wiring board is between 210VAC-240VAC by alternating voltage meter; ●...
- Page 62 Service Manual 2. IPM protection(H5), desynchronizing malfunction(H7), overcurrent of compressor phase current (P5) (AP1 below means control board of outdoor unit) Main detection points: ● Is voltage input within the normal range ● If the control board AP1 is well connected with compressor COMP? If they are loosened? If the connection sequence is correct? ●...
- Page 63 Service Manual 3. High temperature and overload protection (E8)(AP1 below means control board of outdoor unit) Main detection points: ● If the outdoor ambient temperature is in normal range; ● If the indoor and outdoor fan are running normally; ● If the radiating environment of indoor and outdoor unit is good. E8 is displayed Normal protection, please If the outdoor...
- Page 64 Service Manual 4. Start-up failure (LC) (AP1 below means control board of outdoor unit) Main detection points: ● If the compressor wiring is correct? ● If the stop time of compressor is sufficient? ● If the compressor is damaged? ● If the refrigerant charging amount is too much? Turn on the unit The stop time is not sufficient and If the stop time of compressor...
- Page 65 Service Manual 5. Overload and high discharge temperature malfunction Main detection points: ● If the electronic expansion valve is connected well? Is the electronic expansion valve damaged? ● If the refrigerant is leaked? ● The compressor overload protection terminal is not connected well with the mainboard? ●...
- Page 66 Service Manual H3 or E4 is displayed 30min after power off the unit If the overload protector SAT is well connected? Under ambient temperature, test the resistance of overload protector with ohmmeter; resistance value should be＜1000ohm Connect wire If the wiring terminal FA of electronic according to wiring expansion valve is well connected? diagram...
- Page 67 Service Manual 6. 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: If the unit operates normally before malfunction...
- Page 68 Service Manual 1. Key detection point Test9 Test3 Test4 Test2 Test1 Test5 Test8 Tset7 Test6 Test10 Test11 Test12 Test value under normal Test NO Test point Corresponding component condition Test 1 Between A and C Neutral and live wires 160V~265V Test 2 Between B and C Neutral and live wires...
- Page 69 Service Manual 2. Capacity charging malfunction (outdoor unit malfunction) (AP1 below is control board of outdoor unit) Main detection point: ● Detect if the voltage of L and N terminal of wiring board is between 210AC-240AC by alternating voltage meter; ●...
- Page 70 Service Manual 3.IPM protection, phase current overcurrent (the control board as below indicates the control board 2. IPM protection, phase current overcurrent (the control board as below indicates the control board of outdoor unit) H5/P5 of outdoor unit) H5/P5 Mainly detect: (1) Compressor COMP terminal (2) voltage of power supply (3) compressor (4) Refrigerant-charging volume (5) air outlet and air inlet of outdoor/indoor unit Troubleshooting:...
- Page 71 Service Manual 4. Diagnosis for anti-high temperature, overload protection (AP1 below is control board of outdoor unit) Main detection point: ● If the outdoor ambient temperature is in normal range; ● If the indoor and outdoor fan is running normal; ●...
- Page 72 Service Manual 5. Diagnosis for failure start up malfunction (AP1 below is control board of outdoor unit) Main detection point: ● If the compressor wiring is correct? ● If the stop time of compressor is enough? ● If the compressor is damaged? ●...
- Page 73 Service Manual 6. Diagnosis for compressor synchronism (AP1 below is control board of outdoor unit) Main detection point: ● If the system pressure is over-high? ● If the work voltage is over-low? Malfunction diagnosis process: Synchronism Synchronism after energize the unit occurred during and start it operation...
- Page 74 Service Manual 7. Diagnosis for overload and discharge malfunction (AP1 below is control board of outdoor unit) Main detection point: ● If the electron expansion valve is connected well? Is the expansion valve damaged? ● If the refrigerant is leakage? ●...
- Page 75 Service Manual 8. Communication malfunction (AP1 below is control board of outdoor unit) Main detection point: ● Check if the connection wire and the built-in wiring of indoor and outdoor unit is connected well and no damaged; ● 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 76 Service Manual 9. Diagnosis process for outdoor communication circuit Start Test voltage value with Test 10 position in diagram with voltage meter Number jumping Test voltage value with Test 13 position in diagram with voltage meter Number jumping Outdoor unit malfunction Test voltage value with Test...
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Page 77: Troubleshooting For Normal Malfunction
Service Manual 9.3 Troubleshooting for Normal Malfunction 1. Air Conditioner Cant be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether its due to power failure. If yes, No power supply, or poor After energization, operation indicator isnt bright wait for power recovery. - Page 78 Service Manual 4. ODU Fan Motor Cant 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 make sure all wiring terminals are connected connection diagram firmly...
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Page 79: Exploded View And Parts List
Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit The component picture is only for reference; please refer to the actual product. Installation and Maintenance... - Page 80 Service Manual Part Code Description KW09HUCA4DI KW12HUCA4DI KW18HUCA4DI Product Code CB264N01004_L74318 CB264N01104_L74318 CB264N00904_L74318 Guide Louver 1051291601 1051291601 1051291601 Front Panel 2002240901 2002240901 2002240901 Stand Bar 10582150P01 10582150P01 10582150P01 Left Side Plate 26112361B 26112361B 26112361B Left Decorative Board 20192600 20192600 20192600 Left Driving Box Sub-assy 20112201 20112201...
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Page 81: Outdoor Unit
Service Manual 10.2 Outdoor Unit KW09HUCA4DO KW12HUCA4DO The component picture is only for reference; please refer to the actual product. Installation and Maintenance... - Page 82 Service Manual Part Code Description KW09HUCA4DO KW12HUCA4DO Product Code CB264W01000_L74318 CB264W01100_L74318 Front Grill 01473065 01473065 Cabinet 0143303402P 0143303402P Axial Flow Fan 10333022 10333022 Fan Motor 1501308507 1501308507 Clapboard 01233510 01233510 Chassis Sub-assy 0280311901P 0280311901P Electrical Heater (Chassis) 76510004 76510004 Compressor and Fittings 00103977 00103899 Valve Support Sub-Assy...
- Page 83 Service Manual KW18HUCA4DO The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
- Page 84 Service Manual Part Code Description KW18HUCA4DO Product Code CB264W00900_L74318 Front Grill 01473050 Fan Motor 1501403402 Radiator 49015215 Main Board 30138000652 Electric Box Assy 10000100222 Terminal Board Support sub-assy 01715016 Terminal Board 4201025501 Handle 26233053 Left Side Plate 01305043P Coping 01255006P Motor Support Assy 01705038 Condenser Support Plate...
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Page 85: Removal Procedure
Service Manual 11. Removal Procedure Caution: discharge the refrigerant completely before removal. 11.1 Removal Procedure of Indoor Unit Steps Procedure 1. Remove filter sub-assy panel Open the panel. Remove clasps on filter. clasp Remove filter sub-assy with hand. filter sub-assy 2. - Page 86 Service Manual Procedure Steps Remove sealing cover and display. sealing cover display Remove hinges at both sides of panel to separate panel and front case and then panel remove the panel. front case 3. Remove horizontal louver and front case Cut off power, hold both ends of horizontal louver with hand, and then draw it out horizontally.
- Page 87 Service Manual Steps Procedure Remove the left end. Hold the end of connection rod with left hand, hold the horizontal louver with right hand to separate connection rod and horizontal louver. Remove the horizontal louver along the axile center direction. Note: (during operation, install the left end and then install the right end.
- Page 88 Service Manual Steps Procedure Turn over the screw cover on front case with hand, and then remove one screw inside the screw cover with screwdriver. screw screw cover wire groove butt terminal Pull out two butt terminals on electric box, and then take out connection wire of butt terminal, connection wire of inspection board and wire of temperature sensor...
- Page 89 Service Manual Steps Procedure 4. Remove electric box temperature sensor Remove three earthing screws with screws, earthing screw pull out the indoor tube temperature sensor with hand and then cut off the tileline with scissors. earthing screw Take out the electric box shielding cover sub- assy.
- Page 90 Service Manual wire groove Remove screws fixing electric box with screwdriver, and then take out the wires screw from the wire groove of electric box with hand. screw Remove screw from press plate of connection pipe with screwdriver. Remove press plate of connection pipe with hand to separate it from the bottom case.
- Page 91 Service Manual Steps Procedure Open the connection pipe of evaporator with hand. connection pipe evaporator Lift up the left end of evaporator with hand, and then take out the evaporator. 6. Remove swing blade Remove crank connection rod. crank connection rod screws Remove 2 screws fixing swing motor cover with screwdriver.
- Page 92 Service Manual Steps Procedure swing motor sub-assy Remove swing motor sub-assy. swing connection rod Take out swing connection rod to separate it from the swing blade. 7. Remove cross flow blade and motor Remove 4 screws fixing the motor press plate with screwdriver.
- Page 93 Service Manual Procedure Steps 8. Remove drive box Remove the left side cover plate of front case. cover plate screws Remove 3 screws fixing the left drive box with screwdriver. right drive box Take out right drive box. Remove 3 screws fixing left drive box with screws screwdriver.
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Page 94: Removal Procedure Of Outdoor Unit
Service Manual 11.2 Removal Procedure of Outdoor 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. 09K/12K Steps Procedure 1. Remove top cover Remove the screws connecting top cover, left and right side plate, as well as panel, to remove the top top cover cover. - Page 95 Service Manual Steps Procedure 4. Remove left side plate Remove the screws fixing left side plate and condenser support boa rd, to remove the left side plate. left side plate 5. Remove cross fan blade Remove the screw nut fixing cross fan blade, remove the gasket and spring cushion, to remove the cross fan blade.
- Page 96 Service Manual Steps Procedure 7. Remove electric box assy electric box cove r Remove screws fixing electric box assy and mid-isolation board, loosen the bonding tie, pull off the wiring terminal, lift to remove the electric box assy. electric box assy 8.
- Page 97 Service Manual Steps Procedure flash vaporizer assy 10. Remove flash vaporizer assy Remove the screws connecting mid-isolation board, lift to remove the flash vaporizer assy. 11. Remove four-way valve assy four-way valve assy Welding cut the spot weld of four-way valve assy, compressor air suction/discharging valve and condenser pipe outlet, lift to remove the four-way valve assy.
- Page 98 Service Manual Steps Procedure 13. Remove compressor compressor Remove the three feet screwnuts fixing compressor, to remove the compressor. 14. Remove big and small valve assy Remove screws connecting condenser assy and chassis, to remove the condenser assy. Remove the screws fixing big and small valve, to small valve remove the valves.
- Page 99 Service Manual Steps Procedure 1.Remove handle Twist off the screws used for fixing the handle，pull the handle up ward to remove it. handle 2.Remove top panel top panel Remove the screws connecting the top panel with the front panel and left&right side plate, and then remove the top panel.
- Page 100 Service Manual Steps Procedure 4.Remove grille and panel Twist off the screws connecting the grille and panel, and then remove the grille. Twist off the screws connecting the panel, chassis and motor support with screwd-river, and then remove the panel. grille panel 5.Remove right side plate...
- Page 101 Service Manual Steps Procedure 7.Remove electric box electric box Twist off the screws on electric box, cut off the tieline with scissors or pliers, pull out the wiring terminal, pull it upwards to remove the electric box. Twist off the screws on electric box (fireproofing) electric box with screwdriver, and then remove the electric (fireproofing)
- Page 102 Service Manual Steps Procedure 9.Remove motor support Twist off the tapping screws fixingthe motor support, pull it upwardsand then remove the motor support. motor support 10.Remove isolation sheet Twist off the screws connecting isolation sheet and end plate of condenser and chassis, and then remove the isolation sheet.
- Page 103 Service Manual Steps Procedure 12.Remove gas valve and liquid valve Twist off the 2 bolts fixing the valve sub-assy. Unsolder the soldering joint between gas valve and air-return pipe and then remove the gas valve.(note: when unsoldering the soldering joint, wrap the gas valve with wet cloth completely to gas valve avoid the damage to valve, and release all...
- Page 104 Service Manual Steps Procedure 15.Remove left side plate Twist off the screws connecting the left side plate and chassis with screwdriver, and then remove the left side plate. left side plate 16.Remove chassis and condenser Pull it upwards to separate the chassis and condenser.
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Page 105: Appendix
Service Manual Appendix: Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit Fahrenheit Fahrenheit display Fahrenheit display Fahrenheit display Fahrenheit Celsius （℃） Celsius （℃） Celsius （℃） temperature temperature temperature （℉）... -
Page 106: Appendix 3: Pipe Expanding Method
Service Manual Appendix 3: Pipe Expanding Method Pipe Note: Pipe cutter Improper pipe expanding is the main cause of refrigerant leakage.Please expand the pipe according to the following steps: Leaning Uneven Burr A:Cut the pip ● Confirm the pipe length according to the distance of indoor unit and outdoor unit. ●... -
Page 107: Appendix 4: List Of Resistance For Temperature Sensor
Service Manual Appendix 4: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( Resistance(k ) 138.1 18.75 3.848 1.071 128.6 17.93 3.711... - Page 108 Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( Resistance(k ) 181.4 25.01 5.13 1.427 171.4 23.9 4.948 1.386 162.1 22.85 4.773 1.346 153.3 21.85 4.605...
- Page 109 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor(50K) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( Resistance(k ) 853.5 18.34 4.754 799.8 93.42 17.65 4.609 89.07 16.99 4.469 703.8 84.95 16.36 4.334 660.8 81.05 15.75 4.204...
- Page 110 JF00304204...
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F0 error in the display I turn off and the same error comes up