Daikin FTKS18SL216 Service Manual
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Daikin FTKS18SL216 Service Manual

Split r410a series
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R410A serie split
Service Manual
MODEL
FTKS18SL216/RKS18SL216
FTXS18SL216/RXS18SL216
FTKS24SL216/RKS24SL216
FTXS24SL216/RXS24SL216

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Summary of Contents for Daikin FTKS18SL216

  • Page 1 R410A serie split Service Manual MODEL FTKS18SL216/RKS18SL216 FTXS18SL216/RXS18SL216 FTKS24SL216/RKS24SL216 FTXS24SL216/RXS24SL216...
  • Page 2 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 ..................8 2.3 Capacity Variation Ratio According to Temperature ............8 2.4 Noise Curve ........................9 2.5 Cooling and Heating Data Sheet in Rated Frequency .............9 3.
  • Page 3 Service Manual 9. Maintenance ......................50 9.1 Precautions before Maintenance ..................50 9.2 Error Code List .......................51 9.3 Troubleshooting for Main Malfunction ................54 9.4 Troubleshooting for Normal Malfunction .................69 10. Exploded View and Parts List ..............71 10.1 Indoor Unit ........................71 10.2 Outdoor Unit .........................75 11.
  • Page 4 Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit: FTKS18SL216 FTXS18SL216 FTKS24SL216 FTXS24SL216 Outdoor Unit: RKS18SL216 RXS18SL216 RKS24SL216 RXS24SL216 Remote Controller: YU1F Technical Information...
  • Page 5 Service Manual 2. Specifications 2.1 Specification Sheet Model FTKS18SL216/RKS18SL216 FTXS18SL216/RXS18SL216 Product Code CB459004600_L75033 CB459004200_L84775 Rated Voltage 208/230 208/230 Power Supply Rated Frequency Phases Power Supply Mode Outdoor Outdoor Cooling Capacity(Min~Max) Btu/h 18000(3412~20472) 18000(3412~20472) Heating Capacity(Min~Max) Btu/h 19800(3412~21837) Cooling Power Input(Min~Max)
  • Page 6 Service Manual Model of Outdoor Unit RKS18SL216 RXS18SL216 Outdoor Unit Product Code CB425W07500_L75033 CB425W07400_L84775 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO.,LTD CO.,LTD Compressor Model QXA-B141zF030A QXA-B141zF030A Compressor Oil RB68EP RB68EP Compressor Type Rotary Rotary Compressor Locked Rotor Amp (L.R.A) Compressor RLA 12.08 12.08...
  • Page 7 Service Manual Model FTKS24SL216/RKS24SL216 Product Code CB459004700_L75033 Rated Voltage 208/230 Power Supply Rated Frequency Phases Power Supply Mode Outdoor Cooling Capacity(Min~Max) Btu/h 22000(8630~23200) Heating Capacity(Min~Max) Btu/h Cooling Power Input(Min~Max) 2260(600~27000) Heating Power Input(Min~Max) Cooling Power Current 10.03 Heating Power Current Rated Input 2700 Rated Current...
  • Page 8 Service Manual Model of Outdoor Unit RKS24SL216 Outdoor Unit Product Code CB425W07600_L75033 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD Compressor Model QXA-B141zF030A Compressor Oil RB68EP Compressor Type Rotary Compressor Locked Rotor Amp (L.R.A) Compressor RLA 11.29 Compressor Power Input 1440 Overload Protector 1NT11L-6233 or KSD115℃...
  • Page 9 Service Manual Model FTXS24SL216/RXS24SL216 Product Code CB459004300_L84775 Rated Voltage 208/230 Power Supply Rated Frequency Phases Power Supply Mode Outdoor Cooling Capacity(Min~Max) Btu/h 22000(8630~23200) Heating Capacity(Min~Max) Btu/h 24000(8650~26000) Cooling Power Input(Min~Max) 2260(600~27000) Heating Power Input(Min~Max) 2300(610~2750) Cooling Power Current 10.03 Heating Power Current 10.20 Rated Input 2750...
  • Page 10 Service Manual Model of Outdoor Unit RXS24SL216 Outdoor Unit Product Code CB425W07700_L84775 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD Compressor Model QXA-B141zF030A Compressor Oil RB68EP Compressor Type Rotary Compressor Locked Rotor Amp (L.R.A) Compressor RLA 12.18 Compressor Power Input 1440 Overload Protector NT11L-6233 or KSD115℃...
  • Page 11 Outdoor:DB19.94°F/WB19.04°F Indoor air flow:Super High Pipe length:24.6ft 10 20 30 40 50 60 70 80 90 100 Compressor speed (rps) Compressor speed (rps) FTKS24SL216/RKS24SL216 FTXS24SL216/RXS24SL216 FTKS18SL216/RKS18SL216 FTXS18SL216/RXS18SL216 2.3 Capacity Variation Ratio According to Temperature Cooling Heating Conditions Conditions Indoor:DB80°F/WB66.9°F Indoor:DB70°F Outdoor:DB95°F...
  • Page 12 Outdoor side noise Heating Cooling Compressor frequency(Hz) Indoor fan motor rating speed RXS24SL216 FTXS24SL216 RXS18SL216 FTKS24SL216 FTKS18SL216 RKS18SL216 FTXS18SL216 RKS24SL216 2.5 Cooling and Heating Data Sheet in Rated Frequency Cooling: Pressure of gas pipe Inlet and outlet pipe Rated cooling...
  • Page 13 Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 7 3/16 FTKS18SL216 FTXS18SL216 Φ2 3/16 Φ2 3/16 1 1/2 7 1/2 5 1/2 8 1/8 7 5/16 FTKS24SL216 FTXS24SL216 Φ2 3/4 Φ2 3/4 1 11/16 3 1/8 Unit:inch Models FTKS18SL216...
  • Page 14 Service Manual 3.2 Outdoor Unit RKS18SL216 RXS18SL216 RKS24SL216 RXS24SL216 13 3/8 15 5/8 Unit: inch Technical Information...
  • Page 15 Di s charge Heat Accumlator Suction exchanger Compressor (evaporator) Heat exchanger Liquid pipe (condenser) side Valve Strainer Electron Strainer expansion valve COOLING HEATING Connection pipe specification: Liquid pipe:1/4" Gas pipe:1/2" for FTKS18SL216/RKS18SL216 FTXS18SL216/RXS18SL216 Gas pipe:5/8" for FTKS24SL216/RKS24SL216 FTXS24SL216/RXS24SL216 Technical Information...
  • Page 16 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. ● Indoor Unit FTKS18SL216 FTXS18SL216 FTKS24SL216 FTXS24SL216 600007000575 Technical Information...
  • Page 17 Service Manual ● Outdoor Unit RKS18SL216 RKS24SL216 60000700023002 RXS18SL216 600007000230 Technical Information...
  • Page 18 Service Manual RXS24SL216 60000700078601 The above data is subject to change without notice. Please refer to the nameplate of the unit. Technical Information...
  • Page 19 Service Manual 5.2 PCB Printed Diagram Indoor Unit Top view Name Neutral wire interface of cold plasma(only for the mode with this function) Neutral wire interface of power supply Interface of indoor fan Interface of health function live wire(only for the mode with this function) Interface of up&down swing motor...
  • Page 20 Service Manual Outdoor Unit ● Top view 1 Interface of compressor High pressure protection of system Low-temperature cooling temperature sensor Overload protection of compressor 5 Interface of temperature sensor 6 Electronic expansion valve Low pressure protection of system 8 Interface of fan 9 Interface of 4-way valve 10 Interface of 2-way valve 11 Electric heating belt of chassis...
  • Page 21 Service Manual 6. Function and Control 6.1 Remote Controller Introduction Buttons on Remote Controller ON/OFF button MODE button +/- button FAN button SWING button SAVE button X-FAN button TIMER button TURBO button SLEEP button LIGHT button Introduction for Icons on Display Screen Child Lock Dry mode Auto mode...
  • Page 22 Service Manual Technical Information...
  • Page 23 Service Manual TIMER The TIMER OFF function is resetted when the CHILD LOCK function is unlocked. TURBO When pressing this button u nder cooling or heating mo de, the air conditioner will enter into quick cooling or quick heating mode. The "TURBO" icon is displayed on the remote controller. Press this button again to exit turbo fu nction and the "TURBO" icon will disappear on the remote controller.
  • Page 24 Service Manual 6.2 Brief Description of Modes and Functions 1.Basic function of system (1)Cooling mode (1) Under this mode, fan and swing operates at setting status. Temperature setting range is 60.8~86.0 (2) During malfunction of outdoor unit or the unit is stopped because of protection, indoor unit keeps original operation status. (2)Drying mode (1) Under this mode, fan operates at low speed and swing operates at setting status.
  • Page 25 Service Manual (8)I feel control mode After controller received I feel control signal and ambient temperature sent by remote controller, controller will work according to the ambient temperature sent by remote controller. (9)Compulsory defrosting function (1) Start up compulsory defrosting function Under ON status, set heating mode with remote controller and adjust the temperature to 60.8 F.
  • Page 26 Service Manual Outdoor Units 1. Input Parameter Compensation and Calibration (1) Check the ambient temperature compensation function Indoor ambient temperature compensation function. a. In cooling mode, the indoor ambient temperature participating in computing control = (T – ⊿ T indoor ambient temperature cooling indoor ambient temperature compensation b.
  • Page 27 Service Manual 3. Special Functions Defrosting Control ① Conditions for starting defrosting After the time for defrosting is judged to be satisfied, if the temperature for defrosting is satisfied after detections for continuous 3minutes, the defrosting operation will start. ② Conditions of finishing defrosting The defrosting operation can exit when any of the conditions below is satisfied: ≥...
  • Page 28 Service Manual 1. Starting estimation: After the compressor stopped working for 180s, if T > [T (the temperature of hysteresis is 35.6ºF )], inner pipe frozen-preventing frequency-limited temperature the machine is only allowed to start for operating, otherwise it should not be started, and should be stopped to treat according to the frozen- preventing protection: Clear the trouble under the mode of power turn-off / heating, and the protection times are not counted.
  • Page 29 Service Manual 1. Frequency limited If [T ]≤T <[T ] , you should limit the frequency raising of heating overload frequency-limited temperature inner pipe heating overload frequency reducing temperature at normal speed compressor. 2. Reducing frequency at normal speed and stopping machine: If T[ ]≤T <[T...
  • Page 30 Service Manual (6)Voltage sag protection After start the compressor, if the time of DC link Voltage sag [U ] is measured to be less than t Voltage sag protection time , Sagging protection voltage the machine should be stop at once, hand on the voltage sag trouble, reboot automatically after 30 minutes. (7)Communication fault When you have not received any correct signal from the inner machine in three minutes, the machine will stop for communication fault.
  • Page 31 Service Manual (12) Starting-up Failure Protection for Compressor Stop the compressor after its starting-up fails, restart it after 20s if the fault doesnt shows, and if they are all failing for the successive start 3 times, it shall be reported as Starting-up Failure, and then restart up it after 3 min. When it still not be able to operate through carry out the above process for 5 times, it is available if press ON/OFF.
  • Page 32 Service Manual 6. Electric Heating Function of Chassis (1) When Toutdoor amb.≤32ºF , the electric heating of chassis will operate; (2) When Toutdoor amb.>35.6ºF , the electric heating of chassis will stop operation; (3)When 32ºF <Toutdoor amb.≤35.6ºF, the electric heating of chassis will keep original status. 7.
  • Page 33 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 34 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 35 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 36 Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall Space to the wall At least 6 At least 6 Drainage pipe unit:inch Installation and Maintenance...
  • Page 37 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 38 Service Manual 8.2 Installation Parts-checking 8.4 Requirements for Electric Connection 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 39 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 40 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 for installation when binding them.
  • Page 41 Service Manual Refer to the following table for wrench moment of force: 8.6 Installation of Outdoor Unit Hex nut diameter(inch) Tightening torque(ft·Ibf) 1. Fix the Support of Outdoor Unit(Select it according to Φ1/4 11.10~14.75 the actual installation situation) Φ3/8 22.12~29.50 (1) Select installation location according to the house structure.
  • Page 42 Service Manual (3) The water outlet cant be placed in water in order to drain 8.8 Check after Installation and Test smoothly.(As show in Fig.27) Operation 1. Check after Installation Check according to the following requirement after finishing installation. The drain hose can't be fluctuant Items to be checked Possible malfunction Has the unit been...
  • Page 43 Service Manual 8.9 Wired Controller If the product you bought is equipped with wired controller, please refer to the following introductions of wired controller. 1.Displaying Part Fig1.1.1 Outline of wired controller 1.1 LCD Display of Wired Controller Fig.1.1.2 LCD display 1.2 Instruction to LCD Display Description Symbols...
  • Page 44 Service Manual Lock function Shield functions (Button operation, temperature setting, On/Off operation,Mode setting are SHIELD disabled by the remote monitoring system.) TURBO Turbo function state Memory function (The indoor unit resumes the original setting state after power failure and MEMORY then power recovery) It blinks under on state of the unit without operation of any button SAVE...
  • Page 45 Service Manual 3 Operation Instructions 3.1 On/Off Press On/Off to turn on the unit and turn it off by another press. Note: The state shown in Fig.3.1.1 indicates the “Off” state of the unit after power on. The state shown in Fig.3.1.2 indicates the “On” state of the unit after power on.
  • Page 46 Service Manual • Timer off setting: Under on-state of the unit without timer setting, if Timer button is pressed, LCD will display xx. Hour,with OFF blinking. In this case, press▲ or ▼ button to adjust timer on and then press Timer to confirm. •...
  • Page 47 Service Manual Timer range: 0.5-24hr. Every press of ▲or ▼ will make the set time increased or decreased by 0.5hr. If either of them is pressed continuously, the set time will increase/ decrease by 0.5hr every 0.5s. 3.6 Swing Setting Swing On: Press Function under on state of the unit to activate the swing function.
  • Page 48 Service Manual Turn off the unit,without Sleep Press Function repeatedly unitll Press Enter/Cancel to activated the Sleep function activated go to the Sleep setting status function Press Enter/Cancel to cancel this Press Function repeatedly unitll go to the Fig.3.7.1. Sleep Setting setting Sleep function again 3.8 Turbo Setting...
  • Page 49 Service Manual 3.9 E-heater Setting E-heater (auxiliary electric heating function): In the Heating mode, E-heater is allowed to be turned on for improvement of effciency. Once the wired controller or the remote controller enters the Heating mode, this function will be turned on automatically. Press Function in the Heating mode to enter the E-heater setting interface and then press Enter/Cancel to cancel this function.
  • Page 50 Service Manual Notes: (1)When the Blow function is activated, if turning off the unit by pressing On/Off or by the remote controller, the indoor fan will run at the low fan speed for 2 min, with “BLOW” displayed on the LCD. While, if the Blow function is deactivated, the indoor fan will be turned off directly.
  • Page 51 Service Manual Fig.4.2 Fig.4.2 Fig.4.2 shows the installation steps of the wired controller, but there are some issues that need your attention. (1) Prior to the installation, please firstly cut off the power supply of the wire buried in the installation hole, that is, no operation is allowed with electricity during the whole installation.
  • Page 52 Service Manual 5 Errors Display If there is an error occurring during the operation of the system, the error code will be displayed on the LCD, as show in Fig.5.1. If multi errors occur at the same time, their codes will be displayed circularly. Note: In event of any error, please turn off the unit and contact the professionally skilled personnel.
  • Page 53 Service Manual 9. Maintenance 9.1 Precautions before Maintenance There are high-capacity electrolytic capacitors on the outdoor mainboard. Thus, even the power is cut off, there is high voltage inside the capacitors and it needs more than 20min to reduce the voltage to safety value. Touching the electrolytic capacitor within 20min after cutting the power will cause electric shock.
  • Page 54 Service Manual 9.2 Error Code List (Only for the mode with this function) D42/ D43/ D40/D5 D41/D6 Malfunction of detecting plate(WIFI ) Installation and Maintenance...
  • Page 55 Service Manual Complete unit Off 3s current and blink detection 13 times malfunction Off 3s Defrosting will occur in and blink heating mode.Compressor once will operate while indoor It’s the normal state (during fan will stop. blinking, ON 10s and Off 05s) Installation and Maintenance...
  • Page 56 Service Manual Outdoor DC fan motor DC fan motor malfunction Outdoor DC malfunction lead to or system blocked or the fan motor compressor stop connector loosed malfunction operation Installation and Maintenance...
  • Page 57 Service Manual 9.3 Troubleshooting for Main Malfunction ●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 58 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 cant operate? ●...
  • Page 59 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 60 Service Manual 4. 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 61 Service Manual 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 62 Service Manual ●Outdoor unit: Key detection point "Test point NO." Test point Related elements Test value under normal condition Test 1 Between A and C Neutral wire ,live wire 160V-265V Test 2 Between B and C Neutral wire ,live wire 160V-265V Test 3 Between D and E...
  • Page 63 Service Manual 1.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; ● Is reactor (L) well connected? Is connection wire loosened or pull-out? Is reactor (L) damaged? Malfunction diagnosis process: Turn on the unit and wait 1 minute...
  • Page 64 Service Manual 2.IPM protection, desynchronizing malfunction, phase current of compressor is overcurrent (AP1 below is control board of outdoor unit) Main detection point: ● If control board AP1 and compressor COMP is well connected? If they are loosened? If the connection sequence is correct? ●...
  • Page 65 Service Manual Energize and switch on Use AC voltmeter If the voltage Check the supply to measure the IPM protection between terminal L voltage and voltage between occurs after the and N on wiring machine has run for terminal L and N restore it to board XT is within a period of time?
  • Page 66 Service Manual 3.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; ● If the radiating environment of indoor and outdoor unit is well. Malfunction diagnosis process: Anti-high temperature, overload protection...
  • Page 67 Service Manual 4.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 68 Service Manual 5. 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 69 Service Manual 6.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? ● If the overload protector is damaged? Malfunction diagnosis process: After the unit de-energized...
  • Page 70 Service Manual 7.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 dam- aged Malfunction diagnosis process: Start...
  • Page 71 Service Manual 8.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 11 position in...
  • Page 72 Service Manual 9.4 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 73 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...
  • Page 74 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 75 Service Manual Part Code Description FTKS18SL216 FTXS18SL216 Product Code CB459N04600_L75033 CB459N04200_L84775 Front Panel 200003000015S 200003000015S Filter Sub-Assy 11122089 11122089 Decoration board(left and right) 20192662 20192662 Front Case 2002248401 2002248401 Guide Louver 1051276501 1051276501 Axile Bush 10542036 10542036 Air Louver(Manual) 10512732...
  • Page 76 Service Manual The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 77 Service Manual Part Code Description FTKS24SL216 FTXS24SL216 Product Code CB459N04700 CB459N04300_L84775 Front Panel 200003000014 200003000014 Filter Sub-Assy 11012007 11012007 Screw Cover 2425245301 2425245301 Front Case 2002248603 2002248603 Air Louver(Manual) 10512737 10512737 Helicoid Tongue 26112513 26112513 Left Axile Bush 10512037 10512037 Display Board 300001000036 300001000036...
  • Page 78 Service Manual 10.2 Outdoor Unit The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 79 Service Manual Part Code Description RKS18SL216 RKS24SL216 Product Code CB425W07500_L75033 CB425W07600_L75033 Front Grill 01473049 01473049 Cabinet 01433047P 01433047P Axial Flow Fan 10335008 10335008 Fan Motor 1501506402 1501506402 Chassis Sub-assy 01700000094P 01700000161P01 Clapboard Assy 01233153 01702100008 Compressor and Fittings 00105249G 00105249G Inhalation Tube Sub-assy 030010000499 030010000130...
  • Page 80 Service Manual The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 81 Service Manual The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 82 Service Manual Part Code Description RXS18SL216 RXS24SL216 Product Code CB425W07400_L84775 CB425W07700_L84775 Front Grill 01473049 01473049 Cabinet 01433047P 01433047P Axial Flow Fan 10335008 10335008 Fan Motor 1501506402 1501506402 Chassis Sub-assy 01700000093P 01700000161P Drainage hole Cap 06813401 06813401 Clapboard Assy 01233153 01235081 4-Way Valve Assy 030152000291 030152000073...
  • Page 83 Service Manual 11. Removal Procedure Warning: Be sure to wait for a minimum 11.1 Removal Procedure of Indoor Unit of 20 minutes after turning off all power supplies and discharge the refrigerant NOTE: Take A1 panel for an example. completely before removal. 1.
  • Page 84 Service Manual Electric box cover 2 4. Remove electric box cover 2 and detecting plate(WIFI) Screw Remove the screws on the electric box cover 2 and detecting plate(WIFI), then remove the electric box cover 2 and Screws detecting plate(WIFI). Detecting plate (WIFI) Loosen the connection clasps between front case sub-assy and bottom case.
  • Page 85 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 86 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 87 Service Manual Installation and Maintenance...
  • Page 88 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. Steps Procedure 1. Remove big handle,valve cover and top cover big handle Remove the screw connecting the big handle and right side plate, and then remove the big handle.
  • Page 89 Service Manual Steps Procedure Remove the screws connecting the outer case with motor support, isolation plate and chassis; lift the outer case upwards; loosen the clasps of outer case with right side plate and left side plate, and then remove the outer case. outer case 3.
  • Page 90 Service Manual Steps Procedure 4. Remove axial flow blade Remove the nut fixing axial flow blade and then remove the blade. axial flow fan motor support Remove the 6 screws fixing the motor and then remove the motor. Remove the 2 screws connecting the motor support and chassis, and then loosen the stopper to remove the motor support.
  • Page 91 Service Manual Steps Procedure 6. Remove the soundproof sponge Tear off the sticking stripe and then remove the soundproof sponge. soundproof sponge 7. Remove isolation plate Remove the 2 screws connecting the isolation plate and condenser side plate; remove the 3 screws connecting the isolation plate and chassis, and then remove the isolation plate.
  • Page 92 Service Manual Steps Procedure 9. Remove compressor compressor Remove the 3 foot nuts fixing compressor and then lift the compressor upwards to remove the compressor and damping cushion. Note: Keep the ports of discharge pipe and suction pipe from foreign objects. condenser sub-assy 10.
  • Page 93 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 94 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 95 Service Manual Appendix 4: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -2.2 138.1 18.75 138.2 3.848 208.4 1.071 -0.4 128.6 69.8 17.93 3.711 210.2 1.039...
  • Page 96 Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -2.2 181.4 25.01 138.2 5.13 208.4 1.427 -0.4 171.4 69.8 23.9 4.948 210.2 1.386 162.1 71.6 22.85 141.8 4.773 1.346 153.3 73.4...
  • Page 97 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor(50K) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -20.2 853.5 120.2 18.34 190.4 4.754 -18.4 799.8 51.8 93.42 17.65 192.2 4.609 -16.6 53.6 89.07 123.8 16.99 4.469 -14.8 703.8 55.4 84.95 125.6 16.36...
  • Page 98 JF00303650...

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