Daikin YU1F Service Manual Download Page 15

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Technical Information

Service Manual

4. Refrigerant System Diagram

Indoor unit

Outdoor unit

COOLING

HEATING

4-Way valve

Discharge

Suction

Heat

exchanger

(evaporator)

Heat

exchanger

(condenser)

Valve

Liquid pipe

side

Gas pipe

side

Strainer

Electron

expansion

valve

Strainer

Accumlator

Compressor

Indoor unit

Outdoor unit

Accumlator

COOLING

Discharge

Suction

Heat

exchanger

(evaporator)

Heat

exchanger

(condenser)

Valve

Liquid pipe

side

Gas pipe

side

Compressor

Strainer

Electron

expansion

valve

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

FTKS18SL216/RKS18SL216

FTKS24SL216/RKS24SL216

FTXS18SL216/RXS18SL216

FTXS24SL216/RXS24SL216

Summary of Contents for YU1F

Page 1: ...FTKS18SL216 RKS18SL216 FTXS18SL216 RXS18SL216 FTKS24SL216 RKS24SL216 FTXS24SL216 RXS24SL216 Service Manual R410A serie split MODEL...

Page 2: ...al Part 13 5 1 Wiring Diagram 13 5 2 PCB Printed Diagram 16 6 Function and Control 18 6 1 Remote Controller Introduction 18 6 2 Brief Description of Modes and Functions 21 Part Installation and Mainte...

Page 3: ...on 69 10 Exploded View and Parts List 71 10 1 Indoor Unit 71 10 2 Outdoor Unit 75 11 Removal Procedure 80 11 1 Removal Procedure of Indoor Unit 80 11 2 Removal Procedure of Outdoor Unit 85 Appendix 90...

Page 4: ...cal Information Service Manual 1 Summary Indoor Unit Part Technical Information FTKS18SL216 FTXS18SL216 FTKS24SL216 FTXS24SL216 Outdoor Unit RKS18SL216 RXS18SL216 RKS24SL216 RXS24SL216 YU1F Remote Con...

Page 5: ...FTXS18SL216 Indoor Unit Product Code CB459N04600_L75033 CB459N04200_L84775 Fan Type Cross flow Cross flow Diameter Length DXL inch 4 3 16X27 13 16 4 3 16X27 13 16 Fan Motor Cooling Speed SH H M L r mi...

Page 6: ...oil Length LXDXW inch 34 11 16X26X7 8 33 5 8X26X7 8 Fan Motor Speed rpm 800 800 Output of Fan Motor W 60 60 Fan Motor RLA A 0 52 0 52 Fan Motor Capacitor F Air Flow Volume of Outdoor Unit CFM 1883 188...

Page 7: ...Indoor Unit Model of indoor unit FTKS24SL216 Indoor Unit Product Code CB459N04700_L75033 Fan Type Cross flow Diameter Length DXL inch 4 1 4X32 11 16 Fan Motor Cooling Speed SH H M L r min 1300 1150 1...

Page 8: ...h 33 5 16X1 3 4X26 Fan Motor Speed rpm 800 Output of Fan Motor W 60 Fan Motor RLA A 0 4 Fan Motor Capacitor F Air Flow Volume of Outdoor Unit CFM 3200 Fan Type Axial flow Fan Diameter inch 20 1 2 Defr...

Page 9: ...a yd2 32 29 50 23 Indoor Unit Model of indoor unit FTXS24SL216 Indoor Unit Product Code CB459N04300_L84775 Fan Type Cross flow Diameter Length DXL inch 4 1 4X32 11 16 Fan Motor Cooling Speed SH H M L...

Page 10: ...6X1 3 4X26 Fan Motor Speed rpm 800 Output of Fan Motor W 60 Fan Motor RLA A 0 4 Fan Motor Capacitor F Air Flow Volume of Outdoor Unit CFM 3200 Fan Type Axial flow Fan Diameter inch 20 1 2 Defrosting M...

Page 11: ...ngth 24 6ft Conditions Indoor DB70 F Outdoor DB19 94 F WB19 04 F Indoor air flow Super High Pipe length 24 6ft Heating Heating 0 10 20 30 40 50 60 70 90 0 10 20 30 40 50 60 70 80 90 100 120 110 80 11...

Page 12: ...KS24SL216 130 142 in 46 4 51 8 out 51 8 57 2 in 167 181 4 out 98 6 118 4 Super High High 75 Heating 20 30 40 50 L M H SH Indoor fan motor rating speed Noise dB A 46 48 50 52 54 56 58 60 20 30 40 50 60...

Page 13: ...ndoor Unit W D H 4 27 7 3 16 5 1 2 7 1 2 1 1 2 2 3 16 2 3 16 3 1 8 6 1 11 16 8 1 8 27 7 5 16 2 3 4 2 3 4 Unit inch Models W H D FTKS18SL216 FTXS18SL216 38 3 16 11 13 16 8 13 16 FTKS24SL216 FTXS24SL216...

Page 14: ...11 Technical Information Service Manual 3 2 Outdoor Unit Unit inch 35 13 3 8 27 9 16 15 5 8 38 14 5 16 22 RKS18SL216 RXS18SL216 RKS24SL216 RXS24SL216...

Page 15: ...lator Compressor Indoor unit Outdoor unit Accumlator COOLING Discharge Suction Heat exchanger evaporator Heat exchanger condenser Valve Valve Liquid pipe side Gas pipe side Compressor Strainer Electro...

Page 16: ...wire YEGN Yellow Green BK Black VT Violet OG Orange Note Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model 600007000575 67 33 1 3 2 7 50 1 9 325 725 803...

Page 17: ...725 8 5 1 1 8 1 1 0 1 7 5 1 9 9 3 16 21 7521 9 0 2 1 1 02725 1 LURQ VKHOO PRWRU RQO DSSOLHV WR WKH 1RWH 0RWRU JURXQG RXS18SL216 600007000230 9 9 3 16 21 1 7521 9 2 7 50 1 7 03 6 1625 867 7 03 6 1625...

Page 18: ...SUHYHQW WKH ULVN RI HOHFWULF VKRFN 51 1 20B 11 5 1 B 35 17 5 8 7 2 5 1 3 3 7B6 1625 5 9 8 8 29 B 203 203 9 8 5 1 0 1 7 29 5 2 3527 725 1 8 5 57 57 57 5 6 7 203 8 7 03 6 1625 28778 2875220 7 03 6 1625...

Page 19: ...live wire only for the mode with this function 5 Interface of up down swing motor Interface of PG feedback 6 Neutral wire interface of cold plasma only for the mode with this function 7 WIFI 8 Tempera...

Page 20: ...sensor 4 Overload protection of compressor 5 Interface of temperature sensor 6 Electronic expansion valve 7 Low pressure protection of system 8 Interface of fan 9 Interface of 4 way valve 10 Interfac...

Page 21: ...r Icons on Display Screen Introduction for 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 b...

Page 22: ...19 Technical Information Service Manual...

Page 23: ...ditioner 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 function and the TURBO icon will disappear on th...

Page 24: ...the set value under each condition Ambient temperature is Tamb Tcompensation for heat pump unit and Tamb for cooling only unit 4 If theres I feel function Tcompensation is 0 Others are same as above 5...

Page 25: ...be still in standby mode after finishing refrigerant recycling if the unit is in ON status before refrigerant recycling it will still run in original operation mode 11 Ambient temperature display cont...

Page 26: ...the compressor is shut down and Tsetup Tindoor ambient temperature Tcooling indoor ambient temperature compensation 32 9 F start up the machine for cooling the cooling operation will start 2 During o...

Page 27: ...ed on 2 Defrosting a Defrosting starts the compressor is shut down and restarts it after 55 second delay b Defrosting ends the compressor stops then starts it after 55 second delay 2 Outer Fans Contro...

Page 28: ...it should not be started and should be stopped to treat according to the overload protection Clear the trouble at the mode of power turn off heating and the protection times are not counted 2 Frequen...

Page 29: ...ature at normal speed during discharging you should limit the frequency raising of compressor 3 Reducing frequency at normal speed and stopping machine If Tfrequency reducing temperature at normal spe...

Page 30: ...e compressor frequency by reducing 30Hz 90s till the lower limit After it was running 90s at the lower limit if Tfrequency reducing temperature at normal speed of module T Module you should stop the m...

Page 31: ...regarded as four way valve reversion abnormity And then it can run if stop the reversion abnormity protection for four way valve 3 min and if it still cant run when the reversion abnormity protection...

Page 32: ...eration 3 When 32 F Toutdoor amb 35 6 F the electric heating of chassis will keep original status 7 Electric Heating Function of Compressor 1 When Toutdoor amb 23 F compressor stops operation while th...

Page 33: ...the unit adequately grounded The grounding wire cant be used for other purposes 6 Must apply protective accessories such as protective boards cable cross loop and wire clip 7 The live wire neutral wi...

Page 34: ...sure rise or compressor rupture resulting in injury 4 During refrigerant recovery make sure that liquid valve and gas valve are fully closed and power is disconnected before detaching the connection p...

Page 35: ...ng tape 4 Electroprobe 7 Electronic leakage detector 10 Pipe pliers pipe cutter 2 Screw driver 5 Universal meter 8 Vacuum pump 11 Pipe expander pipe bender 3 Impact drill drill head electric drill 6 T...

Page 36: ...At least 8 At least 72 At least 6 At least 6 Space to the wall S p a c e t o t h e o b s t r u c t i o n r o o l f e h t o t e c a p S Space to the obstruction Drainage pipe Space to the wall Space to...

Page 37: ...or unit Make the bound pipes pass through the wall hole and then connect outdoor unit Neaten the pipes Vacuum pumping and leakage detection Check after installation and test operation Finish installat...

Page 38: ...as 6 Other places with special circumstances 7 Do not use the unit in the immediate surroundings of a laundry a bath ashower or a swimming pool 2 Grounding Requirement 1 The air conditioner is first c...

Page 39: ...5 Connect the Pipe of Indoor Unit 1 Aim the pipe joint at the corresponding bellmouth As show in Fig 5 2 Pretightening the union nut with hand 3 Adjust the torque force by referring to the following s...

Page 40: ...th of drain hose and power cord for installation when binding them When binding to a certain degree separate the indoor power and then separate the drain hose As show in Fig 15 3 Bind them evenly 4 Th...

Page 41: ...he wiring terminal according to the color fix them with screws As show in Fig 23 6 Neaten the Pipes 1 The pipes should be placed along the wall bent reasonably and hidden possibly Min semidiameter of...

Page 42: ...T to check whether the operation is normal or not If the ambient temperature is lower than 16 the air conditioner cant start cooling 2 Leakage Detection 1 With leakage detector Check if there is leaka...

Page 43: ...ig 1 1 2 LCD display 1 1 LCD Display of Wired Controller 1 2 Instruction to LCD Display No Symbols Description 1 Swing function 2 Air exchange function this function is yet unavailable for this unit 3...

Page 44: ...f the indoor unit range 16 30 C Timer setting range 0 5 24 hr 6 3 Fan Setting of the high middle low auto fan speed 4 Mode Setting of the Cooling Heating Fan Dry Auto mode of the indoor unit 6 Functio...

Page 45: ...decreased by 1 C every 0 5s as shown in Fig 3 3 1 In the Cooling Dry Fan or Heating mode the temperature setting range is 16 30 C 61 86 F In the Auto mode the setting temperature is unadjustable 3 4...

Page 46: ...timer on and then press Timer to confirm Cancel timer After setting of timer if Timer button is pressed LCD won t display xx Hour so that timer setting is canceled Timer off setting under the On state...

Page 47: ...off When the Sleep function is activated press Function to enter the Sleep setting status After that press Enter Cancel to cancel this function In the Cooling or Dry mode the temperature will increase...

Page 48: ...ncel to cancel this function Turbo function setting is as shown in Fig 3 8 1 Turn off the unit without Sleep function activated Press Function repeatedly unitll go to the Sleep setting status Press En...

Page 49: ...aporated to avoid mildew In the Cooling or Dry mode press Function till the unit enters the Blow setting status and then press Enter Cancel to active this function When the Blow function is activated...

Page 50: ...activated Memory will be displayed If this function is not set the unit will be under the Off state after power failure and then power recovery Memory recovery If this function has been set for the wi...

Page 51: ...four core twisted pair line into the slot of the wired controller and then buckle the front panel and the soleplate of the wired controller together 5 Finally fix the front panel and the soleplate of...

Page 52: ...ing 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 a...

Page 53: ...remove the cover of electric box 2 As shown in the fig below connect the plug of discharge resistance about 100ohm 20W if there is no discharge resistance you can use the plug of soldering iron to poi...

Page 54: ...51 Installation and Maintenance Service Manual 9 2 Error Code List 13 Malfunction of detecting plate WIFI JF Only for the mode with this function D40 D5 D41 D6 D42 D16 D43 D30...

Page 55: ...al It s the normal state Off 3s and blink once during blinking ON 10s and Off 05s Defrosting will occur in heating mode Compressor will operate while indoor fan will stop Complete unit current detecti...

Page 56: ...ation and Maintenance Service Manual L3 38 Outdoor DC fan motor malfunction Outdoor DC fan motor malfunction lead to compressor stop operation DC fan motor malfunction or system blocked or the connect...

Page 57: ...inboard broken Malfunction diagnosis process Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted Start Insert the temperature sensor tightly Yes Yes Y...

Page 58: ...ain board that is of the same model Replace a new main board that is of the same model It s the malfunction of main board Then check whether the voltage between terminal 2 and terminal 3 of the motor...

Page 59: ...the mainboard is defined abnormal Malfunction diagnosis process Start Is there jumper cap on the mainboard Is the jumper cap inserted correctly and tightly Replace the jumper cap with the same model...

Page 60: ...board matches with display board Main board of IDU matches with that of ODU Communication cord is damaged Replace IDU s main board Malfunction eliminated End Connect the line according to wiring diag...

Page 61: ...anual Start Is malfunction eliminated The end check if the connection wire are correctly connected Replace the detecting plate with the same model Replace the mainboard with the same model Yes Yes No...

Page 62: ...Test 6 Both ends of electrolytic capacitor C47 C47 12V power DC 12V 13V Test 7 Both ends of electrolytic capacitor C60 C60 5V power DC 5V Test 8 Both ends of electrolytic capacitor C73 C73 3 3V power...

Page 63: ...ault with the voltage testing circuit on control panel AP1 Replace the control panel AP1 Measure the AC voltage between terminalL andN on wiring board XT power supply Voltage within 210VAC 250VAC Shut...

Page 64: ...ompressor COMP is well connected If they are loosened If the connection sequence is correct Is voltage input in the normal range Test the voltage between L N of wiring board XT by DC voltage meter If...

Page 65: ...the voltage between the two ends of capacitor C2 until the voltage is lower than 20V Replace the capacitor C2 Then energize and start the unit Replace the control panel AP1 Take corrective actions ac...

Page 66: ...1 Check if fan terminal OFAN is connected well 2 Test if resistance value of any two terminals is less than 1k with ohmic meter If the indoor and outdoor fan work well After the unit de energized for...

Page 67: ...re COMP UVW is well connected and connection sequence is correct Replace control board AP1 Replace the compressor If malfunction is removed If the stop time of compressor is more than 3min N If the st...

Page 68: ...an works normally If the stop time of compressor is more than 3min Synchronism after energize the unit and start it Connect wire well Synchronism occurred during operation Replace control board AP1 If...

Page 69: ...ing diagram Replace EKV coil of electron expansion valve If the wiring terminal FA of electron expansion is well connected Remove malfunction The resistance value of first 4 l ead foot an d th e fifth...

Page 70: ...Start Check communication circuit of outdoor unit Problem of communication circuit Check built in wiring of indoor and outdoor unit Connection correct Malfunction of circuit is detected with control...

Page 71: ...er Number jumping Outdoor unit malfunction Test voltage value with Test 13 position in diagram with voltage meter Number jumping Test voltage value with Test 11 position in diagram with voltage meter...

Page 72: ...hod for details Malfunction of compressor Compressor cant operate Refer to point 5 of maintenance method for details 9 4 Troubleshooting for Normal Malfunction 1 Air conditioner cant be started up 2 P...

Page 73: ...pipe Replace drain pipe Wrapping is not tight Water leaking from the pipe connection place of indoor unit Wrap it again and bundle it tightly 5 Compressor cant operate Possible causes Discriminating m...

Page 74: ...ual 10 Exploded View and Parts List 10 1 Indoor Unit 36 35 1 10 2 3 4 5 6 7 8 9 11 12 13 14 15 16 18 19 20 21 25 26 27 28 29 32 31 24 33 34 37 38 39 22 23 17 30 10 The component picture is only for re...

Page 75: ...Evaporator Support 24212177 24212177 1 16 Evaporator Assy 011001000207 011001000207 1 17 Cross Flow Fan 10352060 10352060 1 18 Fan Motor 1501214503 1501214503 1 19 Motor Press Plate 26112511 26112511...

Page 76: ...d Maintenance Service Manual 36 35 37 38 1 8 2 3 4 6 7 9 10 12 13 14 15 17 18 19 20 21 22 23 24 26 27 28 29 30 31 33 5 25 11 16 34 8 32 39 The component picture is only for reference please refer to t...

Page 77: ...011001000095 011001000095 1 16 Cold Plasma Generator 17 Wall Mounting Frame 01252229 01252229 1 18 Motor Press Plate 26112515 26112515 1 19 Fan Motor 1501214501 1501214501 1 20 Connecting pipe clamp 2...

Page 78: ...and Maintenance Service Manual 24 8 7 6 5 4 3 2 1 16 9 15 14 13 12 11 10 23 20 18 30 25 29 28 27 26 21 19 17 22 31 32 The component picture is only for reference please refer to the actual product 10...

Page 79: ...ver 22245002 22245002 1 14 Right Side Plate 0130509403P 0130329208 1 15 Retaining Plate 02115006P 02115006P 1 16 Handle Assy 02113109 02113109 1 17 Wire Clamp 71010003 71010003 1 18 Temperature Sensor...

Page 80: ...77 Installation and Maintenance Service Manual 31 The component picture is only for reference please refer to the actual product...

Page 81: ...78 Installation and Maintenance Service Manual The component picture is only for reference please refer to the actual product 31...

Page 82: ...ht Side Plate 0130509403P 0130509002P 1 14 Valve Cover 22245002 22245002 1 15 Retaining Plate 02115006P 02115006P 1 16 Handle Assy 02113109 02113109 1 17 Valve Support Block 26115007 1 18 Temperature...

Page 83: ...efrigerant completely before removal 1 Remove filter assy Open the front panel Push the left and right filters to make them break away from the groove on the front case Then remove the left and right...

Page 84: ...y and take S wing motor Screw off the screws that are locking the swing motor and take the motor off it out 4 Remove electric box cover 2 and detecting plate WIFI Remove the screws on the electric box...

Page 85: ...the indoor tube temperature sensor Screw off one grounding screw Remove the wiring terminals of motor and stepping motor Remove the electric box assy Screw off the screws that are locking each lead w...

Page 86: ...lation and Maintenance Service Manual R ear case assy 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 rear case assy Gro...

Page 87: ...84 Installation and Maintenance Service Manual...

Page 88: ...alve cover and right side plate and then remove the valve cover 2 Remove grille and outer case grille Remove the 4 screws connecting the grille and outer case and then remove the panel grille Remove t...

Page 89: ...ide plate and left side plate and then remove the outer case Remove the screws connecting the right side plate with electric box assy valve support chassis and condenser side plate and then remove the...

Page 90: ...e 2 screws connecting the motor support and chassis and then loosen the stopper to remove the motor support Remove the screws fixing the electric box sub assy loosen the wire bundle pull out the wirin...

Page 91: ...hen remove the isolation plate Unsolder the welding joints connecting the 4 way valve assy with capillary sub assy compressor and condenser remove the 4 way valve Note Before unsoldering the welding j...

Page 92: ...of discharge pipe and suction pipe from foreign objects Remove the screws connecting the support condenser and condenser assy and then remove the support condenser Remove the 2 screws fixing the cond...

Page 93: ...3 82 83 82 4 28 66 67 66 2 19 75 76 75 2 24 84 85 84 2 29 68 68 20 77 77 25 86 86 30 1 Standard length of connection pipe 16 40ft 24 61ft 26 25ft 2 Min length of connection pipe is 9 84ft 3 Max length...

Page 94: ...to the following steps A Cut the pip Confirm the pipe length according to the distance of indoor unit and outdoor unit Cut the required pipe with pipe cutter B Remove the burrs Remove the burrs with s...

Page 95: ...2 358 233 6 0 717 24 8 60 23 95 9 779 165 2 2 28 235 4 0 697 26 6 57 18 96 8 9 382 167 2 206 237 2 0 678 28 4 54 31 98 6 9 003 168 8 2 133 239 0 66 30 2 51 59 100 4 8 642 170 6 2 064 240 8 0 642 32 4...

Page 96: ...95 13 04 165 2 3 04 235 4 0 93 26 6 76 24 96 8 12 51 167 2 94 237 2 0 904 28 4 72 41 98 6 12 168 8 2 844 239 0 88 30 2 68 79 100 4 11 52 170 6 2 752 240 8 0 856 32 65 37 102 2 11 06 172 4 2 663 242 6...

Page 97: ...342 8 77 49 19 147 2 10 54 217 4 3 04 8 6 323 9 78 8 47 08 149 10 18 219 2 2 955 10 4 306 2 80 6 45 07 150 8 9 827 221 2 872 12 2 289 6 82 4 43 16 152 6 9 489 222 8 2 792 14 274 84 2 41 34 154 4 9 165...

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