Tosot TW09HQ3D6DO Service Manual
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Tosot TW09HQ3D6DO Service Manual

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SERVICE
MANUAL
MODELS:
TW09HQ3D6DO
TW12HQ3D6DO
TW18HQ3D6DO
TW24HQ3D6DO

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Summary of Contents for Tosot TW09HQ3D6DO

  • Page 1 SERVICE MANUAL MODELS: TW09HQ3D6DO TW12HQ3D6DO TW18HQ3D6DO TW24HQ3D6DO...

  • Page 2: Table Of Contents

    Service Manual Table of Contents Part Ⅰ : Technical Information ...............1 1. Summary ........................1 2. Specifications ......................2 2.1 Specification Sheet ......................2 2.2 Operation Characteristic Curve ..................6 2.3 Capacity Variation Ratio According to Temperature ............6 2.4 Cooling and Heating Data Sheet in Rated Frequency .............7 2.5 Noise Curve ........................8 3.
  • Page 3 Service Manual 9. Maintenance ......................43 9.1 Error Code List .......................43 9.2 Procedure of Troubleshooting ..................49 9.3 Troubleshooting for Normal Malfunction .................62 10. Exploded View and Parts List ..............64 10.1 Indoor Unit ........................64 10.2 Outdoor Unit .........................68 11. Removal Procedure ..................72 11.1 Removal Procedure of Indoor Unit ................72 11.2 Removal Procedure of Outdoor Unit ................77 Appendix:...

  • Page 4: Part Ⅰ : Technical Information

    Unit code Indoor unit code Outdoor unit code model model control 1 TW09HQ3D6D CB460005700_L81560 TW09HQ3D6DI CB460N05700_L81560 TW09HQ3D6DO CB497W00200_L81560 2 TW12HQ3D6D CB460001400_L81560 TW12HQ3D6DI CB460N01400_L81560 TW12HQ3D6DO CB437W00900_L81560 YAG1FB2F (WiFi) 3 TW18HQ3D6D CB460001300_L81560 TW18HQ3D6DI CB460N01300_L81560 TW18HQ3D6DO CB437W01500_L81560 4 TW24HQ3D6D CB460001600_L81560 TW24HQ3D6DI CB460N01600_L81560 TW24HQ3D6DO CB437W01700_L81560...

  • Page 5: Specifications

    Service Manual 2. Specifications 2.1 Specification Sheet Model TW09HQ3D6D TW12HQ3D6D Product Code CB460005700_L81560 CB460001400_L81560 Rated Voltage 208/230 208/230 Power Supply Rated Frequency 50/60 50/60 Phases Power Supply Mode Outdoor Outdoor Cooling Capacity Btu/h 9000 12000(2900~15354) Heating Capacity Btu/h 9000 12200(3071~18766) Cooling Power Input 785(75~1500) Heating Power Input...
  • Page 6 Service Manual Model of Outdoor Unit TW09HQ3D6DO TW12HQ3D6DO Outdoor Unit Product Code CB497W00200_L81560 CB437W00900_L81560 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR CO., Compressor Manufacturer/Trademark CO., LTD Compressor Model QXAT-B121zE070 QXAT-B121zE070 Compressor Oil FV50S FV50S Compressor Type Rotary Rotary Compressor L.R.A. 35.0 35.0...
  • Page 7 Service Manual Model TW18HQ3D6D TW24HQ3D6D Product Code CB460001300_L81560 CB460001600_L81560 Rated Voltage 208/230 208/230 Power Supply Rated Frequency 50/60 50/60 Phases Power Supply Mode Outdoor Outdoor Cooling Capacity(Min~Max) Btu/h 18000(4094~21837) 22000(6800~30700) Heating Capacity(Min~Max) Btu/h 18000(4094~24566) 24000(6800~32000) Cooling Power Input(Min~Max) 1330(350~2500) 1700(450~3700) Heating Power Input(Min~Max) 1500(350~2500) 2000(380~3700)
  • Page 8 Service Manual Model of Outdoor Unit TW18HQ3D6DO TW24HQ3D6DO Outdoor Unit Product Code CB437W01500_L81560 CB437W01700_L81560 ZHUHAI GREE DAIKIN DEVICE CO., ZHUHAI LANDA COMPRESSOR CO., Compressor Manufacturer/ Trademark Compressor Model QXAT-D20zF030 QXAT-D20zF030 Compressor Oil RB68EP RB68EP Compressor Type Rotary Rotary Compressor L.R.A. Compressor RLA 15.5 Compressor Power Input...

  • Page 9: Operation Characteristic Curve

    Service Manual 2.2 Operation Characteristic Curve Cooling Heating Cooling Heating Condition Condition Indoor:DB 68°F Indoor:DB 81°F WB66°F Indoor air flow: Super High Indoor air flow: Super High Pipe length:24.6ft Pipe length:24.6ft Compressor Frequency(Hz) Compressor Frequency(Hz) 2.3 Capacity Variation Ratio According to Temperature Cooling Heating Condition...

  • Page 10: Cooling And Heating Data Sheet In Rated Frequency

    Service Manual 2.4 Cooling and Heating Data Sheet in Rated Frequency Cooling: Pressure of gas pipe Inlet and outlet pipe Rated cooling Compressor connecting indoor temperature of heat Fan speed of Fan speed of condition(°F) (DB/WB) Model revolution and outdoor unit exchanger indoor unit outdoor unit...

  • Page 11: Noise Curve

    Service Manual 2.5 Noise Curve 18/24K Cooling 18/24K Heating 09/12K Cooling 09/12K Heating Compressor frequency(Hz) Super Middle Middle Middle High Super High High Indoor fan motor rotating speed Technical Information...

  • Page 12: Outline Dimension Diagram

    Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 7 13/64 09/12K unit Φ2 1/6 Φ2 1/6 1 1/2 1 1/2 7 1/2 5 1/2 8 7/64 7 21/64 18/24K unit Φ2 3/4 Φ2 3/4 1 21/32 3 7/64 Unit:inch Model 09/12K 38 13/64...

  • Page 13: Outdoor Unit

    Service Manual 3.2 Outdoor Unit 09/12K 32 3/16 14 7/8 35 3/8 (21 59/64)/(19 19/64) Unit:inch 18/24K 14 9/16 16 13/16 39 3/8 24 1/64 Unit:inch Technical Information...

  • Page 14: Refrigerant System Diagram

    Service Manual 4. Refrigerant System Diagram 09/12K 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 Technical Information...
  • Page 15 Service Manual 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 INDOOR UNIT OUTDOOR UNIT GAS SIDE 3-WAY VALVE 4-Way valve...

  • Page 16: 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 17 Service Manual ● Outdoor Unit TW09HQ3D6DO TW12HQ3D6DO N(1) 6361000044501 TW18HQ3D6DO 63610000440 Technical Information...
  • Page 18 Service Manual TW24HQ3D6DO 600007000653 These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit. Technical Information...

  • Page 19: Pcb Printed Diagram

    Service Manual 5.2 PCB Printed Diagram Indoor Unit ● Top view Name Neutral wire Needle stand for indoor fan Auto button Up&down swing motor left&right swing motor Interface of temperature sensor Terminal for display board connection Terminal of jumper cap Communication wire Connect earthing wire(only for the mode with this function)
  • Page 20 Service Manual Outdoor Unit TW09HQ3D6DO TW12HQ3D6DO ● Top view Neutral wire of electric High pressure protection 1 Interface of reactor 9 Earthing wire heater for compressor terminal HPP Neutral wire of electric Power supply neutral Interface of electronic 14 Temp. sensor...
  • Page 21 Service Manual TW18HQ3D6DO ● 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...
  • Page 22 Service Manual TW24HQ3D6DO ● Top view Name Interface of compressor Interface of temperature sensor Terminal of compressor overload protection Low-temperature cooling sensor Cooling A valve Cooling B valve Interface of outdoor motor Interface of 2-way valve Interface of 4-way valve Terminal of chassis electric heating Communication wire with...

  • Page 23: Function And Control

    Service Manual 6. Function and Control 6.1 Remote Controller Introduction Buttons on Remote Controller ON/OFF button FAN button MODE button +/- button TURBO button button button CLOCK button TIMER ON/ WiFi TIMER OFF button TEMP button button (before opening cover (after opening cover I FEEL button ON/OFF button...
  • Page 24 Service Manual 2. FAN button Press this button, Auto, Low, Medium-low, Medium, Medium-high, High speed can be circularly selected. After powered on, Auto fan speed is default. Under DRY mode, Low fan speed only can be set up. Low fan Medium-low fan Medium fan ATUO...
  • Page 25 Service Manual 2.5 seconds, ten numbers change in the one place of minute, then the one place is constant, ten numbers change in the tens place of minute at 2.5 seconds speed and carry. During 5s blink, press the Timer button, the timer setting succeeds. The Timer On has been set up, repress the timer button, the Timer On will be canceled.
  • Page 26 Service Manual in every hour, (2) Under the initial presetting temperature17 , after Sleep function started up, the temperature will decrease 1 after 1 decreased, this temperature will be maintained. (3) Under the initial presetting temperature 21 -27 , after Sleep function started up, the temperature will decrease 1 in every hour, after 2 decreased, this temperature will be maintained.
  • Page 27 Service Manual About Quiet function When quiet function is selected: 1. Under cooling mode: indoor fan operates at notch 4 speed. 10 minutes later or when indoor ambient temperature≤28 indoor fan will operate at notch 2 speed or quiet mode according to the comparison between indoor ambinet temperature and set tem- perature.

  • Page 28: Ewpe Smart App Operation Manual

    Service Manual 6.3 Ewpe Smart App Operation Manual Control Flow Chart Internet Cloud intelligent Home Wi-Fi Cellular/ home Other Wi-FI appliances Home wireless router Home Wi-Fi Operating Systems Requirement for User's smart phone: iOS system Android system Support iOS7.0 and Support Android 4.4 and above version above version...

  • Page 29: Brief Description Of Modes And Functions

    Service Manual 6.4 Brief Description of Modes and Functions 1. Temperature Parameters ◆ Indoor preset temperature (T preset ◆ Indoor ambient temperature (T amb. 2. Basic Functions Once energized, in no case should the compressor be restarted within less than 3 minutes. In the situation that memory function is available, for the first energization, if the compressor is at stop before de-energization, the compressor will be started without a 3-minute lag;...
  • Page 30 Service Manual ◆ When compressor is running (not including each malfunction and protection): a.When outdoor ambient temperature≥20°C(68°F) and indoor fan speed is low or medium, the fan speed will turn to high; if indoor fan speed is high or super high, it will keep the same. b.When outdoor ambient temperature≤18°C(64.4°F) , the fan speed will resume set fan speed.
  • Page 31 Service Manual c.For heating and cooling unit, when 22°C(71.6°F)<Tindoor ambient<26°C(78.8°F) (for cooling only unit, 22°C(71.6°F)<Tindoor ambient<26°C)(78.8°F), it will keep the original running mode. If the unit is energized for the first time, it will run in fan mode. ② Protection a.
  • Page 32 Service Manual 1. In cooling mode: 1.1 When the initial set temperature is16-23°C(60.8~73.4°F),the temperature will rise 1°C(1.8°F) by every hour after sleep function is set;the temperature will not change after rising 3°C(5.4°F) ;after running for 7hours,the temperature will decrease1°C(1.8°F) and it will not change after that.
  • Page 33 Service Manual 1. Under heating mode: auto speed under heating or auto heating mode: a. When T ≤T +1°C(1.8°F), indoor fan will operate at high speed; amb. preset b. When T +1°C(1.8°F)<T <T +3°C(5.4°F), indoor fan will operate at medium speed; preset amb.
  • Page 34 Service Manual F2: Indoor evaporator sensor start and short circuit (continuously measured failure in 5s) F3: Outdoor ambient sensor start and short circuit (continuously measured failure in 30s) F4: Outdoor condenser sensor start and short circuit (continuously measured failure in 30s, and don’t measure within 10 minutes after defrosted) F5: Outdoor exhausting sensor start and short circuit (continuously measured failure in 30s after the compressor operated 3 minutes) H3: Overload protection of compressor...

  • Page 35: Part Ⅱ : Installation And Maintenance

    Service Manual Part Ⅱ : Installation and Maintenance 7. Notes for Installation and Maintenance Safety Precautions: 10. If the power cord or connection wire is not long enough, please get the specialized power cord or connection wire Important! from the manufacture or distributor. Prohibit prolong the wire by yourself.
  • Page 36 Service Manual To ensure safety, please be mindful of the following precautions. ●When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances other than the specified refrigerant. Any presence of air or other foreign substance in the refrigerant circuit will cause system pressure rise or compressor rupture, resulting in injury.
  • Page 37 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.

  • Page 38: Installation

    Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall Space to the wall At least 5 7/8 At least 5 7/8 Drainage pipe Unit:inch Installation and Maintenance...
  • Page 39 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...

  • Page 40: 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 unit power supply circuit and air switch.
  • Page 41 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 (ST4.2X25TA) and then check if the frame is firmly installed by in Fig.5) pulling the frame.
  • Page 42 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...

  • Page 43: 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 44: Vacuum Pumping And Leak Detection

    Service Manual Note: 2. Leakage Detection (1) With leakage detector: (1) The through-wall height of drain hose shouldn't be higher Check if there is leakage with leakage detector. than the outlet pipe hole of indoor unit.(As show in Fig.25) (2) With soap water: (2) Slant the drain hose slightly downwards.

  • Page 45: 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 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator During cooling and drying Possible reasons: High operation, except indoor...
  • Page 46 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 Refrigerant recovery. Refrigerant Nominal cooling mode The Serviceman operates it for recovery mode maintenance.
  • Page 47 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 48 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 Compressor intermediate Showing during middle cooling or frequence in middle heating test test state During cooling and drying...
  • Page 49 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 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 Malfunction of During cooling and drying phase current operation, compressor will stop detection while indoor fan will operate;...

  • Page 51: 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 52 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 53 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 54 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 55 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 56 Service Manual 6. Malfunction of detecting plate(WIFI) JF 5. 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 57 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 58 Service Manual 2. IPM protection, phase current overcurrent (the control board as below indicates the control board 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: Turn on the unit after energization...
  • Page 59 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 60 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 61 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 62 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 63 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 64: 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 After energization, operation indicator isn’t bright wait for power recovery.
  • Page 65 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 make sure all wiring terminals are connected connection diagram firmly...

  • Page 66: Exploded View And Parts List

    Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit 09/12K The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 67 Service Manual Part Code Description TW09HQ3D6DI TW12HQ3D6DI Product Code CB460N05700_L81560 CB460N01400_L81560 Decorative Strip Front Panel 27230010219 27230010219 Display Board 300001000042 300001000042 Filter Sub-Assy 1112208906 11122089 Decorative Board (Left) 20192662 20192662 Front Case 2002248401 2002248401 Guide Louver 1051276501 1051276501 Axile Bush 10542036 10542036 Air Louver 1...
  • Page 68 Service Manual 18/24K MODE ON/OFF The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 69 Service Manual Part Code Description TW18HQ3D6DI TW24HQ3D6DI Product Code CB460N01300_L81560 CB460N01600_L81560 Decorative Strip Front Panel Assy 00000200057 00000200057 Display Board 300001000042 300001000042 Filter Sub-Assy 11012007 11012007 Decorative Board (Left) 20192655 20192655 Front Case 2002248603 2002248603 Guide Louver 1051232001 1051232001 Axile Bush 10542036 10542036 Air Louver 1...

  • Page 70: Outdoor Unit

    Service Manual 10.2 Outdoor Unit 09/12K The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 71 Service Manual Part Code Description TW09HQ3D6DO TW12HQ3D6DO Product Code CB497W00200_L81560 CB437W00900_L81560 Front Grill 016004060004 016004060004 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...
  • Page 72 Service Manual 18/24K The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 73 Service Manual Part Code Description TW18HQ3D6DO TW24HQ3D6DO Product Code CB437W01500_L81560 CB437W01700_L81560 Front Grill 016004060005 016004060005 Fan Motor 15010400000102 15010400000102 Radiator 49015215 4901521501 Main Board 300027000040 300027000224 Electric Box Assy 100002000485 100002000598 Terminal Board Support sub-assy 01715016A 01715016 Terminal Board 42200006001401 42200006001401 Handle 26233053...

  • Page 74: Removal Procedure

    Service Manual 11. Removal Procedure Caution: discharge the refrigerant completely before removal. 11.1 Removal Procedure of Indoor Unit 1. Remove filter as s y Front panel Open the front panel. Push the left and right filters to make them break away from the groove on the front case.
  • Page 75 Service Manual 4. Remove detecting plate and electric box cover2 Remove the screws fixing detecting plate and the remove detecting plate. Detecting plate Remove the screws fixing electric box cober2 and the remove electric box. Loosen the connection clasps between bottom case front case sub-assy and bottom case.
  • Page 76 Service Manual Indoor tube temperature s ensor Cut off the wire binder and pull out the indoor tube temperature sensor. Screw off one grounding screw. Main Remove the wiring terminals of motor and board stepping motor. Remove the electric box assy. G rounding Screw off the screws that are locking each s c rew...
  • Page 77 Service Manual G roove R ear case ass y First remove the left side of evaporator from the groove on the rear case assy. Then remove the right side from the clasp on the C lasp rear case assy. Installation and Maintenance...
  • Page 78 Service Manual Installation and Maintenance...

  • Page 79: 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. 09/12K 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 80 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 81 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 82 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 83 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 84 Service Manual 18/24K Steps Procedure 1.Remove handle Twist off the screws used for fixing the handle and v alve cover , pull the handle and v alve cover up ward to remove it. handle valve cover 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 85 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 axial flow blade...
  • Page 86 Service Manual Steps Procedure 7.Remove motor support motor support Twist off the tapping screws fixingthe motor support, pull it upwardsand then remove the motor support. right plate board Remove the scre ws thgir eht gnitcennoc side plate with the chassis, the valve support and the electric box, and then yssa etalp edis thgir eht evome.
  • Page 87 Service Manual Steps Procedure 9.Remove4-wayvalve assy Discharge the refrigerant completely;unsolder the pipelines connecting the compressor andthe condenser assy,and then remove the 4-way valve assy. 4-way valve assy 10.Remove electronic Expansion Valve Unsolder the spot weld of discharge and inhalation tube sub-assy, electronic expansion Valve,compressor and condenser, and then remove the discharge and inhalation tube sub-assy and electronic expansion valve...
  • Page 88 Service Manual Steps Procedure 12.Remove compressor compressor Twist off the 3 foot nuts on compressor and then remove the compressor. Installation and Maintenance...

  • Page 89: 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 90: 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 91: 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 92 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 93 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...
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