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1. 118 2 1 Indoor Unit 118 2 2 Outdoor Unit 119 Safety Cautions SiUS041501E v 1 Safety Cautions Be sure to read the following safety cautions before conducting repair work After the repair work is complete be sure to conduct a test operation to ensure that the equipment operates normally and explain the cautions for operating the product to the customer Caution Items The caution items are classified into Warning and Caution The Warning items are especially important since they can lead to death or serious injury if they are not followed closely The Caution items can also lead to serious accidents under some conditions if they are not followed Therefore be sure to observe all the safety caution items described below Pictograms This symbol indicates the item for which caution must be exercised The pictogram shows the item to which attention must be paid This symbol indicates the prohibited action The prohibited item or action is shown in the illustration or near the symbol This symbol indicates the action that must be taken or the instruction The instruction is shown in the illustration or near the symbol 1 1 Warnings and Cautions Regarding Safety of Workers Wa
2. 104 3 Field Settings 105 3 1 Temperature Display Switch 105 3 2 When 2 Units are Installed in 1 Room 106 3 3 Facility Setting Switch cooling at low outdoor temperature Only for RK X series 107 4 Silicon Grease on Power Transistor Diode Bridge 108 Tips for Servicing SiUS041501E 103 Trial Operation and Field Settings 1 Tips for Servicing 1 1 Pump Down Operation Outline In order to protect the environment be sure to conduct pump down operation when relocating or disposing of the unit Detail 1 Remove the valve caps from the liquid stop valve and the gas stop valve 2 Carry out forced cooling operation 3 After 5 to 10 minutes close the liquid stop valve with a hexagonal wrench 4 After 2 to 3 minutes close the gas stop valve and stop the forced cooling operation Refer to forced cooling operation below 1 2 Forced Cooling Operation Indoor Unit Gas stop valve Valve cap Close Liquid stop valve Service port R13628 Hexagonal wrench Item Forced Cooling Conditions The forced cooling operation is allowed when bot
3. 99 5 12 Main Circuit Short Check 99 SiUS041501E Service Diagnosis 54 5 13 Power Module Check 100 General Problem Symptoms and Check Items SiUS041501E 55 Service Diagnosis 1 General Problem Symptoms and Check Items Symptom Check Item Details Reference Page The unit does not operate Check the power supply Check if the rated voltage is supplied Check the type of the indoor unit Check if the indoor unit type is compatible with the outdoor unit Check the outdoor temperature Heating operation cannot be used when the outdoor temperature is 18 CWB 64 4 FWB or higher and cooling operation cannot be used when the outdoor temperature is below 10 CDB 50 FDB Diagnose with remote controller indication 60 Check the remote controller addresses Check if address settings for the remote controller and indoor unit are correct 106 Operation sometimes stops Check the power supply A power failure of 2 to 10 cycles stops air conditioner operation Operation lamp OFF Check the outdoor temperature Heating operation cannot be used when the outdoor temperature is 18 CWB 64 4 FWB or higher and cooling operation cannot be used when the outdoor temperature is below 10 CDB 50 FDB
4. 41 3 8 Outdoor Fan Control 42 3 9 Liquid Compression Protection Function 42 3 10 Defrost Control 43 3 11 Electronic Expansion Valve Control 44 3 12 Malfunctions 47 Main Functions SiUS041501E 23 Function and Control 1 Main Functions 1 1 Temperature Control Definitions of Temperatures The definitions of temperatures are classified as following Room temperature temperature of lower part of the room Set temperature temperature set by remote controller Room thermistor temperature temperature detected by room temperature thermistor Target temperature temperature determined by microcomputer Temperature Control The temperature of the room is detected by the room temperature thermistor However there is a difference between the temperature detected by room temperature thermistor and the temperature of lower part of the room depending on the type of the indoor unit or installation condition Practically the temperature control is done by the target temperature appropriately adjusted for the indoor unit and the temperature dete
5. 23 1 3 Airflow Direction Control 25 1 4 Fan Speed Control for Indoor Unit 26 1 5 Program Dry Operation 27 1 6 Automatic Operation 28 1 7 Thermostat Control 29 1 8 NIGHT SET Mode 30 1 9 ECONO Operation 30 1 10 Inverter POWERFUL Operation 31 1 11 Other Functions 32 2 Function of Thermistor 33 3 Control Specification 34 3 1 Mode Hierarchy 34 3 2 Frequency Control 35 3 3 Controls at Mode Chan
6. 71 4 10 OL Activation Compressor Overload 72 4 11 Compressor Lock 74 4 12 DC Fan Lock 75 4 13 Input Overcurrent Detection 76 4 14 Four Way Valve Abnormality 77 4 15 Discharge Pipe Temperature Control 79 4 16 High Pressure Control in Cooling 80 4 17 Compressor System Sensor Abnormality 82 4 18 Position Sensor Abnormality 83 4 19 Thermistor or Related Abnormality Outdoor Unit 85 4 20 Electrical Box Temperature Rise 87 4 21 Radiation Fin Temperature Rise 88 4 22 Output Overcurrent Detection 89 5 Check
7. 6 1 Specifications 7 1 1 Cooling Only 7 1 2 Heat Pump 11 Part 3 Printed Circuit Board Connector Wiring Diagram 15 1 Indoor Unit 16 1 1 09 12 Class 16 1 2 18 24 Class 18 2 Outdoor Unit 20 2 1 09 12 Class RKN18NMVJU 20 2 2 RXN18NMVJU RK X 18NMVJU 24 class 21 Part 4 Function and Control 22 1 Main Functions 23 1 1 Temperature Control 23 1 2 Frequency Principle
8. 91 5 1 Thermistor Resistance Check 91 5 2 Fan Motor Connector Output Check 92 5 3 Power Supply Waveforms Check 93 5 4 Electronic Expansion Valve Check 93 5 5 Four Way Valve Performance Check 94 5 6 Inverter Unit Refrigerant System Check 94 5 7 Inverter Analyzer Check 95 5 8 Rotation Pulse Check on the Outdoor Unit PCB 97 SiUS041501E Table of Contents iv 5 9 Installation Condition Check 98 5 10 Discharge Pressure Check 98 5 11 Outdoor Fan System Check 99 5 12 Main Circuit Short Check 99 5 13 Power Module Check 100 Part 7 Trial Operation and Field Settings 1
9. 53 1 General Problem Symptoms and Check Items 55 2 Troubleshooting with LED 56 2 1 Indoor Unit 56 2 2 Outdoor Unit 56 3 Service Diagnosis 57 4 Troubleshooting 60 4 1 Error Codes and Description 60 4 2 Indoor Unit PCB Abnormality 61 4 3 Freeze up Protection Control Heating Peak cut Control 62 4 4 Fan Motor DC Motor or Related Abnormality 63 4 5 Thermistor or Related Abnormality Indoor Unit 65 4 6 Low voltage Detection or Over voltage Detection 66 4 7 Signal Transmission Error between Indoor Unit and Outdoor Unit 68 4 8 Unspecified Voltage Between Indoor Unit and Outdoor Unit 70 4 9 Outdoor Unit PCB Abnormality
10. When you press the SWING button the flap moves up and down The flap stops when you press the SWING button again TIMER CANCEL button Cancels the timer setting OFF TIMER button Adjusts the OFF TIMER setting The timer can be set 1 12 hours 1 COMFORT AIRFLOW operation P 25 P 26 3 ECONO operation P 30 2 POWERFUL operation P 31 4 Auto swing setting P 25 Heat Pump SiUS041501E 51 Remote Controller 2 Heat Pump Reference Refer to the following pages for detail Note Refer to the operation manual of applicable model for detail You can download operation manual from Daikin Business Portal Daikin Business Portal Product Information Operation Installation Manual URL https global1d daikin com business_portal login FTXN N Series ARC480A6 FTX N Series ARC480A8 Display LCD Displays the current settings In this illustration each section is shown with all its displays on for the purpose of explanation R21814 Signal transmitter To use the remote controller aim the transmitter at the indoor unit If there is anything blocking the signals between the unit and the remote controller such as a curtain the unit may not operate The maximum transmission distance is about 23 ft 7 m Receiver OFF button Press this button to stop the operation AUTO 1 button Automatically selects an appropriate operation mode COOL or HEAT based on th
11. Diagnose with remote controller indication 60 The unit operates but does not cool or does not heat Check for wiring and piping errors in the connection between the indoor unit and outdoor unit Check for thermistor detection errors Check if the thermistor is mounted securely Check for faulty operation of the electronic expansion valve Set the unit to cooling operation and check the temperature of the liquid pipe to see if the electronic expansion valve works Diagnose with remote controller indication 60 Diagnose by service port pressure and operating current Check for refrigerant shortage Large operating noise and vibrations Check the output voltage of the power module 100 Check the power module Check the installation condition Check if the required spaces for installation specified in the installation manual are provided SiUS041501E Troubleshooting with LED Service Diagnosis 56 2 Troubleshooting with LED 2 1 Indoor Unit Operation Lamp The operation lamp blinks when any of the following errors is detected 1 When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions 2 When a signal transmission error occurs between the indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages 2 2 Outdoor Unit The outdoor unit has one green LED LED
12. 28 1 7 Thermostat Control 29 1 8 NIGHT SET Mode 30 1 9 ECONO Operation 30 1 10 Inverter POWERFUL Operation 31 1 11 Other Functions 32 2 Function of Thermistor 33 3 Control Specification 34 3 1 Mode Hierarchy 34 3 2 Frequency Control 35 3 3 Controls at Mode Changing Start up 37 3 4 Discharge Pipe Temperature Control 39 3 5 Input Current Control 40 3 6 Freeze up Protection Control 41 3 7 Heating Peak cut Control
13. 870 320 Packaged Dimensions H W D in mm 31 7 8 41 9 16 17 1 2 810 1 056 444 31 7 8 41 9 16 17 1 2 810 1 056 444 Weight Lbs kg 97 44 108 49 Gross Weight Lbs kg 115 52 126 57 Sound Pressure Level H dB A 54 55 Drawing No 3D093564A 3D093565A Conversion Formulae kcal h kW 860 Btu h kW 3412 cfm m min 35 3 Cooling Indoor 80 FDB 26 7 CDB 67 FWB 19 4 CWB Outdoor 95 FDB 35 CDB 75 FWB 24 CWB Piping Length 25 ft 7 5 m Specifications SiUS041501E 11 Specifications 1 2 Heat Pump 60 Hz 208 230 V Note The data are based on the conditions shown in the table below Model Indoor Unit FTXN09NMVJU FTXN12NMVJU Outdoor Unit RXN09NMVJU RXN12NMVJU Cooling Heating Cooling Heating Capacity Rated Min Max kW 2 64 1 30 3 00 2 64 1 30 2 93 3 52 1 30 3 80 3 52 1 30 4 10 Btu h 9 000 4 400 10 200 9 000 4 400 10 000 12 000 4 400 13 000 12 000 4 400 14 000 kcal h 2 270 1 120 2 580 2 270 1 120 2 520 3 030 1 120 3 270 3 030 1 120 3 530 Moisture Removal gal h 0 32 0 45 Running Current Rated A 4 41 3 99 3 64 3 29 5 74 5 19 4 60 4 16 Power Consumption Rated Min Max W 869 278 1 135 680 273 836 1 142 260 1 250 911 260 1 113 Power Factor Rated 94 7 94 7 89 8 89 9 95 7 95 7 95 2 95 2 COP Rat
14. IPM1 X1M DB1 L1R MRM10 HR2 HL1 HR1 BLK BRN 1 L1 ORG 1 WHT ZF 2 L2 2 HN1 V2 C400 RED 3 3 INDOOR S V3 L1 C405 MR30 V150 L2 GRN YLW U V W SA1 E1 POWER SUPPLY MRCW PS E2 S90 S20 S40 GRN FIELD WIRING 6 1 1 5 1 1 7 2 1 3 GRN OUTDOOR S71 S30 S80 PCB1 RED RED ORG BLU RED BLK BLK BLU ORG BLK BLK RED BLK BLK BRN WHT BLK WHT BLK YLW BLU RED YLW Y1S V t t t U M W MS Q1L Y1E M1F M1C Z1C N 2 Z2C N 2 Z3C N 2 FU3 20A FU2 3 15A FU1 3 15A MS 3 IN CASE OF HEAT PUMP TYPE NOTE 1 REFER TO THE NAME PLATE FOR THE POWER REQUIREMENTS C400 C405 DB1 FU1 FU2 FU3 IPM1 L1 L2 L1R M1C M1F MR30 MRM10 MRCW PCB1 CAPACITOR DIODE BRIDGE FUSE INTELLIGENT POWER MODULE LIVE REACTOR COMPRESSOR MOTOR FAN MOTOR MAGNETIC RELAY PRINTED CIRCUIT BOARD PS Q1L R1T R2T R3T S20 S30 S40 S71 S80 S90 SA1 V2 V3 V150 SWITCHING POWER SUPPLY OVERLOAD PROTECTOR THERMISTOR CONNECTOR SURGE ARRESTER VARISTOR X1M Y1E Y1S Z1C Z3C ZF TERMINAL STRIP ELECTRONIC EXPANSION VALVE COIL REVERSING SOLENOID VALVE COIL FERRITE CORE NOISE FILTER PROTECTIVE GROUND R1T OUTDOOR R3T DISCHARGE R2T CONDENSER C 3D089069 IP
15. Error displayed again on remote controller Indoor heat exchanger thermistor functioning Check No 01 Check the thermistor resistance value Check No 01 Check the indoor heat exchanger thermistor resistance value in the heating operation Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Troubleshooting SiUS041501E 87 Service Diagnosis 4 20 Electrical Box Temperature Rise Error Code L3 Method of Error Detection An electrical box temperature rise is detected by checking the radiation fin thermistor with the compressor off Error Decision Conditions With the compressor off the radiation fin temperature is above A The error is cleared when the radiation fin temperature drops below B To cool the electrical components the outdoor fan starts when the radiation fin temperature rises above C and stops when it drops below B Supposed Causes Defective outdoor fan motor Short circuit Defective radiation fin thermistor Disconnection of connector Defective outdoor unit PCB Troubleshooting Check No 17 Refer to P 98 Check No 19 Refer to P 99 A B C C F C F C F 09 12 class RKN18NMVJU 82 179 6 65 149 70 158 RXN18NMVJU RK X 18NMVJU 24 class 90 194 64 147 2 81 177 8 Caution WARNING To cool the electrical components the outdoor fan starts when the radiation fin temperature rises above C and stops when it d
16. Power selection INTELLIGENT EYE operation Low temperature cooling operation 15 C 5 F Quick warming function Hot start function F C changeover R C temperature display factory setting F Automatic defrosting Operation Automatic operation Remote Control 5 rooms centralized controller option Program dry function Remote control adaptor normal open pulse contact option Fan only Lifestyle Convenience New POWERFUL operation non inverter Remote control adaptor normal open contact option Inverter POWERFUL operation DIII NET compatible adaptor option Priority room setting Remote Controller Wireless COOL HEAT mode lock Wired option HOME LEAVE operation ECONO operation Indoor unit ON OFF button Signal receiving sign R C with back light Temperature display Note Available Not available SiUS041501E Functions List of Functions 4 Category Functions FTK09 12NMVJU RK09 12NMVJU FTX09 12NMVJU RX09 12NMVJU Category Functions FTK09 12NMVJU RK09 12NMVJU FTX09 12NMVJU RX09 12NMVJU Basic Function Inverter with inverter power control Health amp Clean Air purifying filter Operation limit for cooling CDB 10 46 10 46 Photocatalytic deodorizing filter Air purifying filter with photocatalytic deodorizing function Opera
17. R19505 Air conditioner control mode Forced operation mode Forced cooling operation for pump down operation Power transistor test mode Normal operation mode Fan Cooling includes drying Stop indoor unit OFF Preheating operation Discharging from capacitor Stop Air conditioner control mode Forced operation mode Forced cooling operation for pump down operation Power transistor test mode Normal operation mode Fan Cooling includes drying Heating Heating Defrosting Stop indoor unit OFF Preheating operation Discharging from capacitor Stop R19522 Control Specification SiUS041501E 35 Function and Control 3 2 Frequency Control Outline The compressor frequency is determined according to the difference between the room thermistor temperature and the target temperature Detail For Cooling Only Model 1 Determine command frequency Command frequency is determined in the following order of priority 1 Forced cooling 2 Indoor frequency command 2 Determine upper limit frequency The minimum value is set as an upper limit frequency among the frequency upper limits of the following functions Compressor protection input current discharge pipe temperature freeze up protection 3 Determine lower limit frequency The maximum value is set as a lower limit frequency among the frequency lower limits of the following function Pressure difference upkeep 4 Determ
18. 10 3 8 295 990 263 Packaged Dimensions H W D in mm 14 9 16 42 1 2 15 3 8 370 1 080 390 14 9 16 42 1 2 15 3 8 370 1 080 390 Weight Lbs kg 27 12 27 12 Gross Weight Lbs kg 37 17 37 17 Sound Pressure Level H M L SL dB A 48 44 38 33 51 45 39 34 Sound Power Level dB 64 67 Outdoor Unit RKN18NMVJU RKN24NMVJU Casing Color Ivory White Ivory White Compressor Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Model 1YC23AYXD 2YC36PXD Motor Output W 780 1 100 Refrigerant Oil Type FVC50K FVC50K Charge oz L 12 4 0 375 21 5 0 650 Refrigerant Type R 410A R 410A Charge Lbs kg 2 49 1 13 2 49 1 13 Airflow Rate H m min cfm 65 5 2 313 73 9 2 609 SL 52 1 1 840 62 2 2 196 Fan Type Propeller Propeller Motor Output W 58 80 Running Current Rated A 7 20 6 51 11 36 10 27 Power Consumption Rated W 1 492 1 492 2 345 2 345 Power Factor Rated 99 6 99 6 99 2 99 3 Starting Current A 7 63 11 79 Dimensions H W D in mm 28 15 16 34 1 4 12 5 8 735 870 320 28 15 16 34 1 4 12 5 8 735 870 320 Packaged Dimensions H W D in mm 31 7 8 41 9 16 17 1 2 810 1 056 444 31 7 8 41 9 16 17 1 2 810 1 056 444 Weight Lbs kg 90 41 97 44 Gross Weight Lbs kg 106 48 115 52 Sound Pressure Level H
19. 41 22 6 51 14 10 50 18 3 39 99 15 59 14 8 31 52 20 68 12 1 25 02 25 77 10 0 20 00 30 86 8 2 16 10 35 95 6 9 13 04 40 104 5 8 10 62 45 113 4 9 8 707 50 122 4 1 7 176 R25 C 77 F 10 k B 3435 K R25 C 77 F 20 k B 3950 K Room temperature thermistor C F 50 25 0 15 5 32 59 86 113 0 15 30 45 k R21673 Other thermistors C k 15 0 15 30 45 150 100 50 F 5 32 59 86 113 Multimeter Resistance range R19751 Multimeter R20505 Room temperature thermistor SiUS041501E Check Service Diagnosis 92 5 2 Fan Motor Connector Output Check Check No 03 Fan motor wire breakdown short circuit check 1 Check the connector for connection 2 Turn the power off 3 Check if each resistance at the phases U V and V W is 90 100 between the pins 12 9 and between 9 6 Motor control voltage check 1 Check the connector for connection 2 Check the motor control voltage is generated between the pins 2 3 Rotation pulse check 1 Check the connector for connection 2 Turn the power on and stop the operation 3 Check if the Hall IC generates the rotation pulse 4 times when the fan motor is manually rotated once between the pins 1 3 R11979 12 11 10 9 8 7 6 5 4 3 2 1 Phase U Free pin Free pin Free pin Free pin F
20. Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 43 0 39 0 32 0 29 0 43 0 39 0 43 0 39 Power Consumption Rated W 58 58 43 43 58 58 58 58 Power Factor Rated 64 8 64 7 64 6 64 5 64 8 64 7 64 8 64 7 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D in mm 11 5 8 39 10 3 8 295 990 263 11 5 8 39 10 3 8 295 990 263 Packaged Dimensions H W D in mm 14 9 16 42 1 2 15 3 8 370 1 080 390 14 9 16 42 1 2 15 3 8 370 1 080 390 Weight Lbs kg 27 12 27 12 Gross Weight Lbs kg 37 17 37 17 Sound Pressure Level H M L SL dB A 48 44 38 33 48 42 37 33 51 45 39 34 51 43 37 34 Sound Power Level dB 64 64 67 67 Outdoor Unit RXN18NMVJU RXN24NMVJU Casing Color Ivory White Ivory White Compressor Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Model 2YC36PXD 2YC36PXD Motor Output W 1 100 1 100 Refrigerant Oil Type FVC50K FVC50K Charge oz L 21 5 0 650 21 5 0 650 Refrigerant Type R 410A R 410A Charge Lbs kg 2 49 1 13 2 49 1 13 Airflow Rate H m min cfm 65 5 2 313 55 2 1 949 73 9 2 609 66 5 2 348 SL 52 1 1 840 46 9 1 656 62 2 2 196 56 0 1 977 Fan Type Propeller Propeller Motor Output W 58 80 Running
21. FDB 50 114 8 50 114 8 Titanium apatite photocatalytic air purifying filter option Operation limit for heating CWB 15 18 Air filter prefilter Operation limit for heating FWB 5 64 4 Wipe clean flat panel Washable grille PAM control MOLD PROOF operation Standby electricity saving Good sleep cooling operation Compressor Oval scroll compressor Timer WEEKLY TIMER Swing compressor Count up down ON OFF timer Rotary compressor 24 hour ON OFF TIMER Reluctance DC motor NIGHT SET mode Comfortable Airflow Power airflow flap horizontal blade Worry Free Reliability amp Durability Auto restart after power failure Power airflow dual flaps Self diagnosis R C LED Power airflow diffuser Wiring error check function Wide angle louvers vertical blade Anti corrosion treatment of outdoor heat exchanger Auto swing up and down Auto swing right and left Flexibility Multi split split type compatible indoor unit 3 D airflow COMFORT AIRFLOW operation H P C O compatible indoor unit Comfort Control Auto fan speed Flexible power supply correspondence Indoor unit quiet operation Chargeless 32 8 ft 10 m 32 8 ft 10 m NIGHT QUIET mode automatic OUTDOOR UNIT QUIET operation manual Either side drain right or left
22. FVC50K FVC50K Charge oz L 12 4 0 375 12 4 0 375 Refrigerant Type R 410A R 410A Charge Lbs kg 1 54 0 70 2 09 0 95 Airflow Rate H m min cfm 31 2 1 102 31 3 1 105 SL 29 3 1 035 24 5 865 Fan Type Propeller Propeller Motor Output W 14 18 Running Current Rated A 3 52 3 18 4 14 3 74 Power Consumption Rated W 693 693 843 843 Power Factor Rated 94 7 94 7 97 9 98 0 Starting Current A 3 77 Dimensions H W D in mm 21 5 8 26 9 16 11 3 16 550 675 284 21 5 8 26 9 16 11 3 16 550 675 284 Packaged Dimensions H W D in mm 24 3 4 32 11 16 16 629 830 407 24 3 4 32 11 16 16 629 830 407 Weight Lbs kg 55 25 60 27 Gross Weight Lbs kg 66 30 71 32 Sound Pressure Level H dB A 46 49 Drawing No C 3D093560 C 3D093561A Conversion Formulae kcal h kW 860 Btu h kW 3412 cfm m min 35 3 Cooling Indoor 80 FDB 26 7 CDB 67 FWB 19 4 CWB Outdoor 95 FDB 35 CDB 75 FWB 24 CWB Piping Length 25 ft 7 5 m SiUS041501E Specifications Specifications 10 60 Hz 208 230 V Note The data are based on the conditions shown in the table below Model Indoor Unit FTK18NMVJU FTK24NMVJU Outdoor Unit RK18NMVJU RK24NMVJU Capacity Rated Min Max kW 5 28 1 60 5 86 6 20 1 60 7 03 Btu h 18 000 5 500 20 000 21 200 5 5
23. It takes 3 minutes to restart the operation because the 3 minute standby function is activated Mode Temperature setting Airflow rate Cooling Only COOL 22 C 72 F Automatic Heat Pump AUTO 25 C 77 F Automatic R21052 ON OFF ON OFF button Function of Thermistor SiUS041501E 33 Function and Control 2 Function of Thermistor 1 Outdoor Heat Exchanger Thermistor 1 The outdoor heat exchanger thermistor is used for controlling the target discharge pipe temperature The system sets the target discharge pipe temperature according to the outdoor and indoor heat exchanger temperature and controls the electronic expansion valve opening so that the target discharge pipe temperature can be obtained 2 In cooling operation the outdoor heat exchanger thermistor is used for detecting the disconnection of the discharge pipe thermistor When the discharge pipe temperature drops below the outdoor heat exchanger temperature by more than a certain value the discharge pipe thermistor is judged as disconnected 3 In cooling operation the outdoor heat exchanger thermistor is used for high pressure protection 2 Discharge Pipe Thermistor 1 The discharge pipe thermistor is used for controlling discharge pipe temperature If the discharge pipe temperature used in place of the inner temperature of the compressor rises abnormally the operating frequency becomes lower or the operation halts 2 The discharge pipe thermistor is us
24. Min Max W W 3 24 5 42 3 14 2 68 5 08 2 64 EER Rated Min Max Btu h W 11 0 18 3 10 7 9 2 17 3 9 0 SEER 15 0 15 0 Piping Connections Liquid in mm 1 4 6 4 1 4 6 4 Gas in mm 1 2 12 7 5 8 15 9 Drain in mm 5 8 16 0 5 8 16 0 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Max Interunit Piping Length ft m 98 1 2 30 98 1 2 30 Max Interunit Height Difference ft m 65 5 8 20 65 5 8 20 Chargeless ft m 32 13 16 10 32 13 16 10 Amount of Additional Charge of Refrigerant oz ft g m 0 21 20 0 21 20 Indoor Unit FTKN18NMVJU FTKN24NMVJU Front Panel Color White White Airflow Rate H m min cfm 20 2 713 20 2 713 M 16 4 579 16 4 579 L 12 9 455 13 9 491 SL 11 8 417 11 8 417 Fan Type Cross Flow Fan Cross Flow Fan Motor Output W 46 46 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Direction Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 43 0 39 0 43 0 39 Power Consumption Rated W 58 58 58 58 Power Factor Rated 64 8 64 7 64 8 64 7 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D in mm 11 5 8 39 10 3 8 295 990 263 11 5 8 39
25. cfm 31 2 1 102 28 5 1 006 31 3 1 105 26 1 922 SL 29 3 1 035 26 0 918 24 5 865 22 0 777 Fan Type Propeller Propeller Motor Output W 14 18 Running Current Rated A 3 52 3 18 3 53 3 19 4 14 3 74 4 99 4 50 Power Consumption Rated W 693 693 697 697 843 843 1 013 1 013 Power Factor Rated 94 7 94 7 94 9 95 0 97 9 98 0 97 6 97 9 Starting Current A 3 77 5 24 Dimensions H W D in mm 21 5 8 26 9 16 11 3 16 550 675 284 21 5 8 26 9 16 11 3 16 550 675 284 Packaged Dimensions H W D in mm 24 3 4 32 11 16 16 629 830 407 24 3 4 32 11 16 16 629 830 407 Weight Lbs kg 55 25 60 27 Gross Weight Lbs kg 66 30 71 32 Sound Pressure Level H dB A 46 48 49 49 Drawing No C 3D093558 C 3D093559A Conversion Formulae kcal h kW 860 Btu h kW 3412 cfm m min 35 3 Cooling Indoor 80 FDB 26 7 CDB 67 FWB 19 4 CWB Outdoor 95 FDB 35 CDB 75 FWB 24 CWB Heating Indoor 70 FDB 21 CDB 60 FWB 15 6 CWB Outdoor 47 FDB 8 3 CDB 43 FWB 6 CWB Piping Length 25 ft 7 5 m SiUS041501E Specifications Specifications 14 60 Hz 208 230V Note The data are based on the conditions shown in the table below Model Indoor Unit FTX18NMVJU FTX24NMVJU Outdoor Unit RX18NMVJU RX24NMVJU Cooling Heating Cooling Heating Capa
26. 29 27 27 Power Factor Rated 52 3 51 8 52 3 51 8 51 6 52 5 51 9 51 0 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D in mm 11 1 4 30 5 16 8 3 4 285 770 223 11 1 4 30 5 16 8 3 4 285 770 223 Packaged Dimensions H W D in mm 12 32 11 16 14 3 16 305 831 360 12 32 11 16 14 3 16 305 831 360 Weight Lbs kg 18 8 18 8 Gross Weight Lbs kg 24 11 24 11 Sound Pressure Level H M L SL dB A 43 35 27 19 43 35 28 25 44 36 30 19 44 36 29 26 Sound Power Level dB Outdoor Unit RXN09NMVJU RXN12NMVJU Casing Color Ivory White Ivory White Compressor Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Model 1YC23AUXD 1YC23AUXD Motor Output W 790 790 Refrigerant Oil Type FVC50K FVC50K Charge oz L 12 4 0 375 12 4 0 375 Refrigerant Type R 410A R 410A Charge Lbs kg 1 54 0 70 2 09 0 95 Airflow Rate H m min cfm 35 2 1 243 31 6 1 116 35 0 1 236 34 7 1 225 SL Fan Type Propeller Propeller Motor Output W 20 26 Running Current Rated A 4 18 3 78 3 41 3 08 5 47 4 95 4 35 3 93 Power Consumption Rated W 844 844 655 655 1 113 1 113 884 884 Power Factor Rated 97 1 97 1 92 3 92 5 97 8 97 8 97 7 97 8 Starting Current A 4 41 5 74 Di
27. 44 111 2 Zone Control Stop zone When the temperature reaches the stop zone the compressor stops Dropping zone The upper limit of frequency decreases Keep zone The upper limit of frequency is kept Up zone The upper limit of frequency increases Reset zone The upper limit of frequency is canceled Indoor heat exchanger thermistor temperature Stop zone Dropping zone Keep zone Up zone Reset zone R14665 D C B A E SiUS041501E Control Specification Function and Control 42 3 8 Outdoor Fan Control 1 Fan ON control to cool down the electrical box The outdoor fan is turned ON when the electrical box temperature is high while the compressor is OFF 2 Fan OFF control during defrosting The outdoor fan is turned OFF during defrosting 3 Fan OFF delay when stopped The outdoor fan is turned OFF 60 70 seconds after the compressor stops 4 Fan speed control for pressure difference upkeep The rotation speed of the outdoor fan is controlled for keeping the pressure difference during cooling operation with low outdoor temperature When the pressure difference is low the rotation speed of the outdoor fan is reduced When the pressure difference is high the rotation speed of the outdoor fan is controlled as well as normal operation 5 Fan speed control during forced cooling operation The outdoor fan is controlled as well as normal operation during forced cooling operation 6 Fan speed contr
28. 8 Titanium apatite photocatalytic air purifying filter option Operation limit for heating CWB 15 18 Air filter prefilter Operation limit for heating FWB 5 64 4 Wipe clean flat panel Washable grille PAM control MOLD PROOF operation Standby electricity saving Good sleep cooling operation Compressor Oval scroll compressor Timer WEEKLY TIMER Swing compressor Count up down ON OFF timer Rotary compressor 24 hour ON OFF TIMER Reluctance DC motor NIGHT SET mode Comfortable Airflow Power airflow flap horizontal blade Worry Free Reliability amp Durability Auto restart after power failure Power airflow dual flaps Self diagnosis R C LED Power airflow diffuser Wiring error check function Wide angle louvers vertical blade Anti corrosion treatment of outdoor heat exchanger Auto swing up and down Auto swing right and left Flexibility Multi split split type compatible indoor unit 3 D airflow COMFORT AIRFLOW operation H P C O compatible indoor unit Comfort Control Auto fan speed Flexible power supply correspondence Indoor unit quiet operation Chargeless 32 8 ft 10 m 32 8 ft 10 m NIGHT QUIET mode automatic OUTDOOR UNIT QUIET operation manual Either side drain right or left Power selection IN
29. A on the PCB When the microcomputer works in order the LED A blinks However the LED A turns OFF while the standby electricity saving function is activated and the power supply is OFF Refer to page 20 21 for the location of LED A ON OFF Operation lamp green R21056 Service Diagnosis SiUS041501E 57 Service Diagnosis 3 Service Diagnosis Method 1 1 When the TIMER CANCEL button is held down for 5 seconds 00 is displayed on the temperature display screen 2 Press the TIMER CANCEL button repeatedly until a long beep sounds The code indication changes in the sequence shown below Note 1 A short beep and two consecutive beeps indicate non corresponding codes 2 To return to the normal mode hold the TIMER CANCEL button down for 5 seconds When the remote controller is left untouched for 60 seconds it also returns to the normal mode 3 Not all the error codes are displayed When you cannot find the error code try method 2 Refer to page 58 No Code No Code No Code 1 00 16 A3 31 UF 2 A5 17 H8 32 UH 3 E7 18 H9 33 P4 4 F3 19 C9 34 H7 5 F6 20 CC 35 U2 6 L3 21 C4 36 EA 7 L4 22 C5 37 AH 8 L5 23 J3 38 FA 9 U4 24 J6 39 E8 10 E6 25 J8 40 CH 11 H6 26 E5 41 J9 12 H0 27 A1 42 E3 13 A6 28 E1 43 H3 14 U0 29 UA 15 C7 30 U3 lt ARC480 Series gt TIMER CANCEL button R21665 SiUS041501E Service Diagnosis Ser
30. ACCUMULATOR 5 16 CuT COMPRESSOR 1 4 CuT 1 2 CuT FIELD PIPING 1 4 CuT FIELD PIPING 5 8 CuT GAS STOP VALVE WITH SERVICE PORT LIQUID STOP VALVE 1 4 CuT STRAINER LIQUID RECEIVER ELECTRONIC EXPANSION VALVE MUFFLER WITH FILTER REFRIGERANT FLOW COOLING HEATING 1 4 CuT 1 4 CuT FOUR WAY VALVE ON HEATING DISCHARGE PIPE THERMISTOR 1 2 CuT 1 2 CuT 1 2 CuT HEAT EXCHANGER THERMISTOR CAPILLARY TUBE 1 CAPILLARY TUBE 2 CAPILLARY TUBE 3 OUTDOOR AIR THERMISTOR 3D092249 SiUS041501E Wiring Diagrams Appendix 118 2 Wiring Diagrams 2 1 Indoor Unit FTK X N09 12NMVJU FTK X 09 12NMVJU FTK X N18 24NMVJU FTK X 18 24NMVJU PCB2 PCB1 S26 S27 FIELD WIRING MR10 BLK 10 10 BLK H1P LED1 BLK GRN YLW MR10 BLK H2P LED2 BLK 3 BLK GRN BLK 2 BLK S1W RED OUTDOOR V2 3 BLK 1 BLK 1 1 WHT R1T 2 RECTIFIER FG H3 H2 H1 BLK t 1 FU1 3 15A X1M CAUTION IPM200 S403 1 10 1 2 12 1 1 5 S200 S32 S6 PNK ORG YLW BLK BLK BLK RED ORG BLU BLU WHT RED YLW t R2T M M INDOOR M1S M1F PROTECTIVE GROUND SIGNAL RECEIVER WIRELESS REMOTE CONTROLLER TRANSMISSION CIRCUIT NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN FG FU1 H1 H3 M1F FRAME GROUND FUSE HARNESS FAN MOTO
31. Board Connector Wiring Diagram Part 3 Printed Circuit Board Connector Wiring Diagram 1 Indoor Unit 16 1 1 09 12 Class 16 1 2 18 24 Class 18 2 Outdoor Unit 20 2 1 09 12 Class RKN18NMVJU 20 2 2 RXN18NMVJU RK X 18NMVJU 24 class 21 SiUS041501E Indoor Unit Printed Circuit Board Connector Wiring Diagram 16 1 Indoor Unit 1 1 09 12 Class Control PCB PCB1 1 S6 Connector for swing motor horizontal blade 2 S26 Connector for display PCB 3 S32 Connector for indoor heat exchanger thermistor 4 S200 Connector for DC fan motor 5 H1 H2 H3 FG Connector for terminal board 6 FU1 Fuse 3 15 A 250 V 7 V2 Varistor FG S32 S26 H3 H2 H1 S6 S200 2P341918 9 FU1 V2 Indoor Unit SiUS041501E 17 Printed Circuit Board Connector Wiring Diagram Display PCB PCB2 Note The symbols in the parenthesis are the names on the appropriate wiring diagram 1 S27 Connector for control PCB 2 SW1 S1W Forced
32. Error codes and description Refer to page 60 10 Press the FAN button for 5 seconds to exit from the service check mode When the remote controller is left untouched for 60 seconds it returns to the normal mode also R21667 R21063 R21668 R21667 SiUS041501E Troubleshooting Service Diagnosis 60 4 Troubleshooting 4 1 Error Codes and Description Displayed only when system down occurs Error Codes Description Reference Page System 00 Normal U2 Low voltage detection or over voltage detection 66 U4 Signal transmission error between indoor unit and outdoor unit 68 UA Unspecified voltage between indoor unit and outdoor unit 70 Indoor Unit A1 Indoor unit PCB abnormality 61 A5 Freeze up protection control heating peak cut control 62 A6 Fan motor DC motor or related abnormality 63 C4 Indoor heat exchanger thermistor or related abnormality 65 C9 Room temperature thermistor or related abnormality 65 Outdoor Unit E1 Outdoor unit PCB abnormality 71 E5 OL activation compressor overload 72 E6 Compressor lock 74 E7 DC fan lock 75 E8 Input overcurrent detection 76 EA Four way valve abnormality 77 F3 Discharge pipe temperature control 79 F6 High pressure control in cooling 80 H0 Compressor system sensor abnormality 82 H6 Position sensor abnormality 83 H9 Outdoor temperature thermistor or related abnormality 85 J3 Discharge pipe thermistor or related abnorma
33. GAS STOP VALVE WITH SERVICE PORT 3D092208 Piping Diagrams SiUS041501E 113 Appendix RKN18NMVJU RK18NMVJU OUTDOOR UNIT HEAT EXCHANGER 9 32 CuT 9 32 CuT 9 32 CuT 1 2 CuT 9 32 CuT CAPILLARY TUBE 1 5 32 CuT 1 4 CuT CAPILLARY TUBE 2 REFRIGERANT FLOW 5 32 CuT COOLING 1 4 CuT M PROPELLER FAN 1 2 CuT 1 2 CuT 1 2 CuT MUFFLER 5 16 CuT 1 4 CuT MUFFLER 1 2 CuT ACCUMULATOR 5 16 CuT COMPRESSOR HEAT EXCHANGER THERMISTOR FOUR WAY VALVE DISCHARGE PIPE THERMISTOR GAS STOP VALVE WITH SERVICE PORT LIQUID STOP VALVE MUFFLER WITH FILTER MUFFLER WITH FILTER ELECTRONIC EXPANSION VALVE OUTDOOR AIR THERMISTOR FIELD PIPING 1 4 CuT FIELD PIPING 1 2 CuT 3D092219 OUTDOOR UNIT HEAT EXCHANGER 9 32 CuT 9 32 CuT 9 32 CuT 1 2 CuT 9 32 CuT 1 4 CuT 1 4 CuT REFRIGERANT FLOW COOLING M PROPELLER FAN STRAINER 1 2 CuT 1 4 CuT 1 2 CuT 1 2 CuT MUFFLER 5 16 CuT 1 4 CuT MUFFLER 1 2 CuT ACCUMULATOR 5 16 CuT COMPRESSOR OUTDOOR AIR THERMISTOR 5 32 CuT CAPILLARY TUBE 1 CAPILLARY TUBE 2 5 32 CuT MUFFLER WITH FILTER ELECTRONIC EXPANSION VALVE LIQUID RECEIVER FIELD PIPING 1 4 CuT FIELD PIPING 1 2 CuT GAS STOP VALVE WITH SERVICE PORT LIQUID STOP VALVE DISCHARGE PIPE THERMISTOR FOUR WAY VALVE HEAT EXCHANGER THERMISTOR 3D092222 SiUS041501E Piping Diagrams Appendix 114 RKN24NM
34. Heating Operation Target temperature 3 0 C 5 4 F Cooling Operation R21862 Target temperature 2 0 C 3 6 F Thermostat OFF Target temperature 2 0 C 3 6 F Thermostat OFF Main Functions SiUS041501E 29 Function and Control 1 7 Thermostat Control Outline Thermostat control is based on the difference between the room thermistor temperature and the target temperature Detail Thermostat OFF Condition The temperature difference is in the zone A Thermostat ON Conditions The temperature difference returns to the zone C after being in the zone A The system resumes from defrost control in any zones except A The operation turns on in any zones except A The monitoring time has passed while the temperature difference is in the zone B Cooling 10 minutes Dry 7 5 minutes Heating 10 seconds lt Cooling Dry gt lt Heating gt Refer to Temperature Control on page 23 for detail B A OFF ON C Room thermistor temperature target temperature 1 5 C 2 7 F R14663 Cooling 0 5 C 0 9 F Dry 0 5 C 0 9 F Cooling 2 0 C 3 6 F Dry 2 5 2 0 C 4 5 3 6 F B A OFF OFF ON ON C 2 0 C 3 6 F 0 5 C 0 9 F 1 5 C 2 7 F Room thermistor temperature target temperature R21656 SiUS041501E Main Functions Function and Control 30 1 8 NIGHT SET Mode Outline Whe
35. Hz 208 230 V Note The data are based on the conditions shown in the table below Model Indoor Unit FTKN09NMVJU FTKN12NMVJU Outdoor Unit RKN09NMVJU RKN12NMVJU Capacity Rated Min Max kW 2 64 1 30 3 00 3 52 1 30 3 80 Btu h 9 000 4 400 10 200 12 000 4 400 13 000 kcal h 2 270 1 120 2 580 3 030 1 120 3 270 Moisture Removal gal h 0 32 0 45 Running Current Rated A 4 41 3 99 5 74 5 19 Power Consumption Rated Min Max W 869 278 1 135 1 142 260 1 250 Power Factor Rated 94 7 94 7 95 7 95 7 COP Rated Min Max W W 3 04 4 68 2 64 3 08 5 00 3 04 EER Rated Min Max Btu h W 10 4 15 8 9 0 10 5 16 9 10 4 SEER 15 0 15 0 Piping Connections Liquid in mm 1 4 6 4 1 4 6 4 Gas in mm 3 8 9 5 3 8 9 5 Drain in mm 5 8 16 0 5 8 16 0 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Max Interunit Piping Length ft m 49 1 4 15 49 1 4 15 Max Interunit Height Difference ft m 39 3 8 12 39 3 8 12 Chargeless ft m 32 13 16 10 32 13 16 10 Amount of Additional Charge of Refrigerant oz ft g m 0 21 20 0 21 20 Indoor Unit FTKN09NMVJU FTKN12NMVJU Front Panel Color White White Airflow Rate H m min cfm 11 4 403 12 0 424 M 8 1 286 8 5 300 L 6 2 219 7 0 247 SL 4 1 145 4 0 141 Fan Type Cross F
36. Safety Cautions SiUS041501E vii 1 2 Warnings and Cautions Regarding Safety of Users Be sure to check that the refrigerating cycle section has cooled down enough before conducting repair work Working on the unit when the refrigerating cycle section is hot may cause burns Use the welder in a well ventilated place Using the welder in an enclosed room may cause oxygen deficiency Caution Warning Do not store the equipment in a room with successive fire sources e g naked flame gas appliance electric heater Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools may cause an electrical shock excessive heat generation or fire If the power cable and lead wires have scratches or deteriorated be sure to replace them Damaged cable and wires may cause an electrical shock excessive heat generation or fire Do not use a joined power cable or extension cable or share the same power outlet with other electrical appliances since it may cause an electrical shock excessive heat generation or fire Be sure to use an exclusive power circuit for the equipment and follow the local technical standards related to the electrical equipment the internal wiring regulations and the instruction manual for installation when conducting electrical work Insufficient power circuit capacity an
37. coil is energized not energized depending on the operation Heating ON Cooling Dry Defrost OFF In order to eliminate the switching sound as the four way valve coil switches from ON to OFF when the heating is stopped the OFF delay switch of the four way valve is carried out Detail OFF delay switch of four way valve The four way valve coil is energized for 160 seconds after the operation is stopped SiUS041501E Control Specification Function and Control 38 3 3 3 Four Way Valve Operation Compensation Outline At the beginning of operation as the four way valve is switched the pressure difference to activate the four way valve is acquired when the output frequency is higher than a certain fixed frequency for a certain fixed time Detail Starting Conditions 1 When the compressor starts and the four way valve switches from OFF to ON 2 When the four way valve switches from ON to OFF during operation 3 When the compressor starts after resetting 4 When the compressor starts after the fault of four way valve switching The lower limit of frequency keeps A Hz for B seconds with any conditions 1 through 4 above When the outdoor temperature is above C C in heating the frequency decreases depending on the outdoor temperature 3 3 4 3 minute Standby Turning on the compressor is prohibited for 3 minutes after turning it off The function is not activated when defrosting 3 3 5 Compressor Protection Function When turning
38. frequency operates for a specified time and then stops After 3 minutes the operation restarts and checks if the discharge pipe thermistor is disconnected If the discharge pipe thermistor is disconnected the system stops after operating for a specified time If the disconnection is detected repeatedly the system is shut down When the compressor runs for 60 minutes without any error the error counter is reset Detail Determining thermistor disconnection When the starting control finishes the detection timer for disconnection of the discharge pipe thermistor A seconds starts When the timer is over the following adjustment is made 1 When the operation mode is cooling When the following condition is fulfilled the discharge pipe thermistor disconnection is ascertained 09 12 class RKN18NMVJU RXN18NMVJU RK X 18NMVJU 24 class Maximum opening pulse 470 470 480 Minimum opening pulse 32 52 52 SiUS041501E Control Specification Function and Control 46 Discharge pipe temperature 6 C 10 8 F lt outdoor heat exchanger temperature 2 When the operation mode is heating When the following condition is fulfilled the discharge pipe thermistor disconnection is ascertained Discharge pipe temperature 6 C 10 8 F lt indoor heat exchanger temperature When the thermistor is disconnected When the disconnection is ascertained the compressor continues operation for 9 minutes and then stops If the compressor stops
39. lt 9 F Heating B A lt 5 C B A lt 9 F A Room thermistor temperature B Indoor heat exchanger temperature If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Disconnection of four way valve coil Defective four way valve coil or harness Defective outdoor unit PCB Defective thermistor Refrigerant shortage Water mixed in refrigerant Defective stop valve SiUS041501E Troubleshooting Service Diagnosis 78 Troubleshooting Check No 01 Refer to P 91 Check No 13 Refer to P 94 Check No 14 Refer to P 94 NG OK NO OK NG OK YES NG Correct the four way valve coil Reconnect the harness YES YES YES NO NO Replace the outdoor unit PCB main PCB Replace the defective thermistor s Refer to the refrigerant line check procedure Replace the four way valve defective or dust clogged Reconnect the thermistor s Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged R20405 Refrigerant shortage Water mixed Stop valve Four way valve coil disconnected loose Harness disconnected Any thermistor disconnected Check No 01 Check the thermistors Check No 14 Check the refrigerant line Check No 13 Check the four way valve switching output Check the co
40. remote controller 2 Cut the address jumper 3 Press the center of the TEMP button and the OFF button on the remote controller at the same time 4 Select A address setting with the TEMP or TEMP button 5 Press the FAN button to enter the address setting mode The indoor unit operation lamp blinks for 1 minute 6 Press the indoor unit ON OFF button while the operation lamp is blinking 7 Press the FAN button on the remote controller for 5 seconds to return to the normal mode Address EXIST Jumper CUT 1 2 R21071 Jumper R21822 R21072 ON OFF OPERATION lamp Indoor unit ON OFF button Field Settings SiUS041501E 107 Trial Operation and Field Settings 3 3 Facility Setting Switch cooling at low outdoor temperature Only for RK X series Outline This function is limited to use for facilities where the target of air conditioning is equipment such as in a server room Never use it in a residence or office where there are people present Detail You can expand the operation range to 15 C 5 F by cutting the jumper on the outdoor unit PCB Note that the operation may stop if the outdoor temperature drops below 15 C 5 F If the outdoor temperature rises the operation starts again For the location of the jumper refer to page 20 21 Caution Replace the PCB if you accidentally cut a wrong jumper Jumpers are necessary for electronic circuit Improper operation may occur if yo
41. repeatedly the system is shut down 3 11 8 Target Discharge Pipe Temperature Control The target discharge pipe temperature is obtained from the indoor and outdoor heat exchanger temperature and the electronic expansion valve opening is adjusted so that the actual discharge pipe temperature becomes close to the target discharge pipe temperature Indirect SH superheating control using the discharge pipe temperature The electronic expansion valve opening and the target discharge pipe temperature are adjusted every A seconds The opening degree of the electronic expansion valve is adjusted by the followings Target discharge pipe temperature Actual discharge pipe temperature Previous discharge pipe temperature The time depends on the opening of the electronic expansion valve 09 12 class RKN18NMVJU RXN18NMVJU RK X 18NMVJU 24 class A seconds 720 540 09 12 class RKN18NMVJU RXN18NMVJU RK X 18NMVJU 24 class A seconds 10 30 20 SC Subcool SH Superheat The target discharge pipe temperature is set as to become the aim SH The inclination does not change depending on the operating condition R18921 Control Specification SiUS041501E 47 Function and Control 3 12 Malfunctions 3 12 1 Sensor Malfunction Detection Sensor malfunction can be detected in the following thermistor 1 Outdoor heat exchanger thermistor 2 Discharge pipe thermistor 3 Radiation fin thermistor 4 Outdoor temperature thermi
42. side drain right or left Power selection INTELLIGENT EYE operation Low temperature cooling operation 15 C 5 F Quick warming function Hot start function F C changeover R C temperature display factory setting F Automatic defrosting Operation Automatic operation Remote Control 5 rooms centralized controller option Program dry function Remote control adaptor normal open pulse contact option Fan only Lifestyle Convenience New POWERFUL operation non inverter Remote control adaptor normal open contact option Inverter POWERFUL operation DIII NET compatible adaptor option Priority room setting Remote Controller Wireless COOL HEAT mode lock Wired option HOME LEAVE operation ECONO operation Indoor unit ON OFF button Signal receiving sign R C with back light Temperature display Note Available Not available SiUS041501E Specifications 6 Part 2 Specifications 1 Specifications 7 1 1 Cooling Only 7 1 2 Heat Pump 11 Specifications SiUS041501E 7 Specifications 1 Specifications 1 1 Cooling Only 60
43. the connection pipe deformed Is the stop valve open High Replace the compressor Open the stop valve Replace the pipe installed at the site Clean the dirty air filter or indoor outdoor heat exchanger Replace the compressor Discharge pressure check Check SiUS041501E 99 Service Diagnosis 5 11 Outdoor Fan System Check Check No 19 DC motor 5 12 Main Circuit Short Check Check No 20 Check to make sure that the voltage between and of the diode bridge DB1 is approximately 0 V before checking Measure the resistance between the pins of the DB1 referring to the table below If the resistance is or less than 1 k short circuit occurs on the main circuit 09 12 class RKN18NMVJU R21195 YES NO NO YES Outdoor fan system is functioning Check the outdoor fan system Reconnect the connector Is the outdoor fan running Fan motor lead wire connector disconnected Go to Check No 16 Positive terminal of digital multimeter 2 3 4 2 3 1 Negative terminal of digital multimeter 4 2 3 1 2 3 Resistance is OK several k several M Resistance is NG 0 or R20698 1 2 3 4 Multimeter SiUS041501E Check Service Diagnosis 100 RXN18NMVJU RK X 18NMVJU 24 class 5 13 Power Module Check Check No 22 Check to make sure that the voltage betw
44. trial operation is complete set the temperature to a normal level 26 28 C 78 82 F in cooling 20 24 C 68 75 F in heating operation For protection the system does not start for 3 minutes after it is turned off ARC480 Series 1 Press the center of the TEMP button and the OFF button on the remote controller at the same time 2 Select T trial operation with the TEMP or TEMP button 3 Press the FAN button to enter the trial operation mode 4 Press the COOL or HEAT button to start trial operation 5 Trial operation terminates in approximately 30 minutes and switches into the normal mode To quit trial operation press the OFF button HEAT PUMP model COOLING ONLY model R21821 Field Settings SiUS041501E 105 Trial Operation and Field Settings 3 Field Settings 3 1 Temperature Display Switch You can select Fahrenheit or Celsius for temperature display Press the TEMP and ON TIMER buttons simultaneously for 5 seconds to change the unit of temperature display You can also change the unit of temperature display by pressing the TEMP and buttons simultaneously for 5 seconds R14477 SiUS041501E Field Settings Trial Operation and Field Settings 106 3 2 When 2 Units are Installed in 1 Room Outline When 2 indoor units are installed in 1 room 1 of the 2 indoor units and the corresponding wireless remote controller can be set for different addresses Procedure 1 Remove the battery cover of the
45. 00 24 000 kcal h 4 540 1 380 5 040 5 330 1 380 6 050 Moisture Removal gal h 1 0 1 2 Running Current Rated A 7 20 6 51 8 41 7 60 Power Consumption Rated Min Max W 1 441 295 1 745 1 696 290 2 255 Power Factor Rated 96 2 96 2 97 0 97 0 COP Rated Min Max W W 3 66 5 42 3 36 3 66 5 52 3 12 EER Rated Min Max Btu h W 12 5 18 6 11 5 12 5 19 0 10 6 SEER 18 0 18 0 Piping Connections Liquid in mm 1 4 6 4 1 4 6 4 Gas in mm 1 2 12 7 5 8 15 9 Drain in mm 5 8 16 0 5 8 16 0 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Max Interunit Piping Length ft m 98 1 2 30 98 1 2 30 Max Interunit Height Difference ft m 65 5 8 20 65 5 8 20 Chargeless ft m 32 13 16 10 32 13 16 10 Amount of Additional Charge of Refrigerant oz ft g m 0 21 20 0 21 20 Indoor Unit FTK18NMVJU FTK24NMVJU Front Panel Color White White Airflow Rate H m min cfm 20 2 713 20 2 713 M 16 4 579 16 4 579 L 12 7 448 14 5 512 SL 11 4 403 11 4 403 Fan Type Cross Flow Fan Cross Flow Fan Motor Output W 46 46 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Direction Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Cu
46. 02 1 Tips for Servicing 103 1 1 Pump Down Operation 103 1 2 Forced Cooling Operation 103 2 Trial Operation 104 3 Field Settings 105 3 1 Temperature Display Switch 105 3 2 When 2 Units are Installed in 1 Room 106 3 3 Facility Setting Switch cooling at low outdoor temperature Only for RK X series 107 4 Silicon Grease on Power Transistor Diode Bridge 108 Part 8 Appendix 109 1 Piping Diagrams 110 1 1 Indoor unit 110 1 2 Outdoor Unit 112 2 Wiring Diagrams
47. 1064 YES YES NO Caution Provide sufficient air passage Clean the air filter Clean the indoor heat exchanger Replace the indoor unit PCB control PCB Replace the indoor heat exchanger thermistor As described in the thermistor characteristic chart Check the air filter Check the dust accumulation on the indoor heat exchanger Is there any short circuit Dirty Dirty Check the air passage Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Troubleshooting SiUS041501E 63 Service Diagnosis 4 4 Fan Motor DC Motor or Related Abnormality Error Code A6 Method of Error Detection The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation Error Decision Conditions The detected rotation speed does not reach the demanded rotation speed of the target tap and is less than 50 of the maximum fan motor rotation speed Supposed Causes Remarkable decrease in power supply voltage Layer short inside the fan motor winding Breaking of wire inside the fan motor Breaking of the fan motor lead wires Defective capacitor of the fan motor Defective indoor unit PCB SiUS041501E Troubleshooting Service Diagnosis 64 Troubleshooting Check No 03 Refer to P 92 Caution OK NO YES YES NO Check No 03 Check No 03 Check No 03 NO YES YES Y
48. 15 VDC are input at the pins 1 4 when the fan motor is rotated 1 turn by hand When the fuse is melted check the outdoor fan motor for proper function If NG in step 2 Defective PCB Replace the outdoor unit PCB main PCB If NG in step 4 Defective Hall IC Replace the outdoor fan motor If OK in both steps 2 and 4 Replace the outdoor unit PCB main PCB 1 2 3 4 5 6 7 320 VDC R20507 S70 or S71 PCB Actual rotation pulse input 0 15 VDC Rotation command voltage 0 6 5 VDC Control voltage 15 VDC SiUS041501E Check Service Diagnosis 98 5 9 Installation Condition Check Check No 17 5 10 Discharge Pressure Check Check No 18 Installation condition check OK Check the allowable dimensions of the air suction and discharge area Is the airflow blocked by obstacles or winds blowing in the opposite direction R19394 NG YES YES NO Is the discharged air short circuited NO NO YES Is the outdoor heat exchanger very dirty Change the installation location or direction Change the installation location or direction Clean the outdoor heat exchanger Change the installation location or direction Check the outdoor temperature The outdoor temperature should be within the operation range R19385 YES YES YES NO NO NO NO YES Is the air filter or indoor outdoor heat exchanger dirty Is
49. 2 13 16 10 Amount of Additional Charge of Refrigerant oz ft g m 0 21 20 0 21 20 Indoor Unit FTK09NMVJU FTK12NMVJU Front Panel Color White White Airflow Rate H m min cfm 11 8 417 12 3 434 M 8 4 297 8 8 311 L 6 9 244 7 0 247 SL 4 0 141 4 1 145 Fan Type Cross Flow Fan Cross Flow Fan Motor Output W 21 28 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Direction Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 25 0 23 0 28 0 25 Power Consumption Rated W 28 28 31 31 Power Factor Rated 53 8 52 9 53 2 53 9 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D in mm 11 1 4 30 5 16 8 3 4 285 770 223 11 1 4 30 5 16 8 3 4 285 770 223 Packaged Dimensions H W D in mm 12 32 11 16 14 3 16 305 831 360 12 32 11 16 14 3 16 305 831 360 Weight Lbs kg 18 8 18 8 Gross Weight Lbs kg 24 11 25 11 Sound Pressure Level H M L SL dB A 43 36 30 19 45 37 30 19 Outdoor Unit RK09NMVJU RK12NMVJU Casing Color Ivory White Ivory White Compressor Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Model 1YC23AUXD 1YC23AUXD Motor Output W 790 790 Refrigerant Oil Type
50. 215 4 1 145 6 2 219 Fan Type Cross Flow Fan Cross Flow Fan Motor Output W 21 28 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Direction Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 25 0 23 0 23 0 21 0 28 0 25 0 25 0 23 Power Consumption Rated W 28 28 25 25 31 31 28 28 Power Factor Rated 53 8 52 9 52 3 51 8 53 2 53 9 53 8 52 9 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D in mm 11 1 4 30 5 16 8 3 4 285 770 223 11 1 4 30 5 16 8 3 4 285 770 223 Packaged Dimensions H W D in mm 12 32 11 16 14 3 16 305 831 360 12 32 11 16 14 3 16 305 831 360 Weight Lbs kg 18 8 18 8 Gross Weight Lbs kg 24 11 25 11 Sound Pressure Level H M L SL dB A 43 36 30 19 43 36 29 25 45 37 30 19 45 37 30 26 Outdoor Unit RX09NMVJU RX12NMVJU Casing Color Ivory White Ivory White Compressor Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Model 1YC23AUXD 1YC23AUXD Motor Output W 790 790 Refrigerant Oil Type FVC50K FVC50K Charge oz L 12 4 0 375 12 4 0 375 Refrigerant Type R 410A R 410A Charge Lbs kg 1 54 0 70 2 09 0 95 Airflow Rate H m min
51. 3 300 13 500 4 400 16 400 kcal h 2 270 1 120 2 580 2 520 1 120 3 270 2 750 1 120 3 350 3 410 1 120 4 130 Moisture Removal gal h 0 32 0 45 Running Current Rated A 3 77 3 41 3 76 3 40 4 42 3 99 5 24 4 73 Power Consumption Rated Min Max W 721 250 962 722 260 1 100 874 260 1 383 1 041 260 1 350 Power Factor Rated 91 9 91 9 92 3 92 3 95 1 95 2 95 5 95 7 COP Rated Min Max W W 3 66 5 20 3 12 4 06 5 00 3 42 3 66 5 00 2 82 3 80 5 00 3 56 EER Rated Min Max Btu h W 12 5 17 6 10 6 13 9 16 9 11 7 12 5 16 9 9 6 13 0 16 9 12 1 SEER HSPF 19 0 9 0 19 0 9 0 Piping Connections Liquid in mm 1 4 6 4 1 4 6 4 Gas in mm 3 8 9 5 3 8 9 5 Drain in mm 5 8 16 0 5 8 16 0 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Max Interunit Piping Length ft m 65 5 8 20 65 5 8 20 Max Interunit Height Difference ft m 49 1 4 15 49 1 4 15 Chargeless ft m 32 13 16 10 32 13 16 10 Amount of Additional Charge of Refrigerant oz ft g m 0 21 20 0 21 20 Indoor Unit FTX09NMVJU FTX12NMVJU Front Panel Color White White Airflow Rate H m min cfm 11 8 417 11 4 403 12 3 434 11 7 413 M 8 4 297 9 3 328 8 8 311 9 1 321 L 6 9 244 7 1 251 7 0 247 7 3 258 SL 4 0 141 6 1
52. 4 CuT DISTRIBUTOR HEAT EXCHANGER CROSS FLOW FAN M FAN MOTOR HEADER 1 2 CuT REFRIGERANT FLOW COOLING HEATING FIELD PIPING 1 4 CuT FIELD PIPING 5 8 CuT THERMISTOR ON HEAT EXCH 4D091768 SiUS041501E Piping Diagrams Appendix 112 1 2 Outdoor Unit 1 2 1 Cooling Only RKN09NMVJU RK09NMVJU RKN12NMVJU RK12NMVJU OUTDOOR UNIT M PROPELLER FAN 3 8 CuT 3 16 CuT MUFFLER REFRIGERANT FLOW 5 16 CuT ACCUMULATOR COOLING COMPRESSOR MUFFLER FIELD PIPING 1 4 CuT FIELD PIPING 3 8 CuT GAS STOP VALVE WITH SERVICE PORT LIQUID STOP VALVE MUFFLER WITH FILTER 3 8 CuT 3 8 CuT MUFFLER WITH FILTER MOTOR OPERATED VALVE 1 4 CuT 1 4 CuT 9 32 CuT HEAT EXCHANGER THERMISTOR HEAT EXCHANGER 9 32 CuT 9 32 CuT 3 8 CuT OUTDOOR TEMPERATURE THERMISTOR 3 8 CuT 5 16 CuT DISCHARGE PIPE THERMISTOR FOUR WAY VALVE 3D092245 OUTDOOR UNIT HEAT EXCHANGER 9 32 CuT 9 32 CuT 3 8 CuT 3 16 CuT 1 4 CuT 1 4 CuT 3 16 CuT M PROPELLER FAN 3 8 CuT 3 8 CuT 3 16 CuT 3 8 CuT 5 16 CuT MUFFLER 3 8 CuT 3 8 CuT REFRIGERANT FLOW 5 16 CuT ACCUMULATOR COOLING COMPRESSOR OUTDOOR TEMPERATURE THERMISTOR HEAT EXCHANGER THERMISTOR MUFFLER WITH FILTER MOTOR OPERATED VALVE MUFFLER WITH FILTER LIQUID STOP VALVE FIELD PIPING 1 4 CuT FIELD PIPING 3 8 CuT FOUR WAY VALVE DISCHARGE PIPE THERMISTOR MUFFLER
53. 40 2 terminals of OL Q1L Insert the thermistor in position Replace the discharge pipe thermistor Replace the electronic expansion valve or the coil Refer to the refrigerant line check procedure Replace the outdoor unit PCB main PCB Replace the four way valve or the coil Replace the outdoor unit PCB main PCB Discharge pipe thermistor disconnected Check No 01 Check the thermistors Check No 13 Check the four way valve Check No 14 Check the refrigerant line Check No 12 Check the electronic expansion valve Replace the OL Q1L Replace the OL harness Connect the connectors properly Connectors are properly connected Check the resistance between the 2 terminals on connector S40 Check the resistance between the 2 terminals of the OL Q1L Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged SiUS041501E Troubleshooting Service Diagnosis 74 4 11 Compressor Lock Error Code E6 Method of Error Detection A compressor lock is detected by the current waveform generated when applying high frequency voltage to the motor Error Decision Conditions If the error repeats the system is shut down Reset condition Continuous run for about 11 minutes without any other error Supposed Causes Closed stop valve Compressor locked Disconnection of compressor harness Troubleshooting Check No 12 Refer
54. 5 9 8 11 13 5 RK X 09NMVJU RK X 12NMVJU RK X 18NMVJU RK X 24NMVJU Cooling Heating Cooling Heating Cooling Heating Cooling Heating A A 12 12 18 18 B A 6 75 8 5 7 5 8 5 10 10 75 12 11 5 C A 5 75 7 5 6 5 7 5 9 9 75 11 10 5 Compressor Stop Input current Dropping Zone Stop Zone Keep Zone Reset Zone R14723 A A B C Control Specification SiUS041501E 41 Function and Control 3 6 Freeze up Protection Control During cooling operation the signal sent from the indoor unit determines the frequency upper limit and prevents freezing of the indoor heat exchanger The signal from the indoor unit is divided into zones The operating frequency limitation is judged with the indoor heat exchanger temperature 3 7 Heating Peak cut Control During heating operation the indoor heat exchanger temperature determines the frequency upper limit to prevent abnormal high pressure The operating frequency limitation is judged with the indoor heat exchanger temperature R21660 Reset zone Indoor heat exchanger thermistor temperature Up zone Keep zone Dropping zone Stop zone 13 C 55 4 F Reference 7 C 44 6 F 5 C 41 0 F 3 C 37 4 F 0 C 32 0 F 09 12 class RXN18NMVJU RX18NMVJU 24 class C F C F A 59 138 2 60 140 0 B 55 131 0 54 129 2 C 52 125 6 51 123 8 D 50 122 0 49 120 2 E 45 113 0
55. 7 Refer to P 98 Check No 19 Refer to P 99 Note Refer to Silicon Grease on Power Transistor Diode Bridge on page 108 for detail A B C F C F 09 12 class RKN18NMVJU 99 210 2 70 158 RXN18NMVJU RK X 18NMVJU 24 class 100 212 57 134 6 Caution Turn off the power and turn it on again to start the system Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged R21672 NO NG OK NO YES Check the radiation fin temperature NO YES YES Above A Check No 19 Check the outdoor fan Error displayed again Has the PCB been replaced Check if silicon grease is applied properly on the radiation fin If not apply the silicon grease Replace the outdoor unit PCB main PCB Replace the outdoor fan motor Correct the connectors and fan motor leads Replace the outdoor unit PCB main PCB YES NO Radiation fin dirty Clean up the radiation fin Check the installation condition Go to Check No 17 Troubleshooting SiUS041501E 89 Service Diagnosis 4 22 Output Overcurrent Detection Error Code L5 Method of Error Detection An output overcurrent is detected by checking the current that flows in the inverter DC section Error Decision Conditions A position signal error occurs while the compressor is running A rotation speed error occurs while the compressor is running An output overcurrent signal i
56. Current Rated A 6 62 5 98 6 60 5 97 11 36 10 27 8 39 7 58 Power Consumption Rated W 1 343 1 343 1 338 1 338 2 345 2 345 1 732 1 732 Power Factor Rated 97 5 97 6 97 5 97 4 99 2 99 3 99 2 99 3 Starting Current A 7 05 11 79 Dimensions H W D in mm 28 15 16 34 1 4 12 5 8 735 870 320 28 15 16 34 1 4 12 5 8 735 870 320 Packaged Dimensions H W D in mm 31 7 8 41 9 16 17 1 2 810 1 056 444 31 7 8 41 9 16 17 1 2 810 1 056 444 Weight Lbs kg 97 44 97 44 Gross Weight Lbs kg 115 52 115 52 Sound Pressure Level H dB A 56 56 59 59 Drawing No 3D091698 3D091697 Conversion Formulae kcal h kW 860 Btu h kW 3412 cfm m min 35 3 Cooling Indoor 80 FDB 26 7 CDB 67 FWB 19 4 CWB Outdoor 95 FDB 35 CDB 75 FWB 24 CWB Heating Indoor 70 FDB 21 CDB Outdoor 47 FDB 8 3 CDB 43 FWB 6 CWB Piping Length 25 ft 7 5 m Specifications SiUS041501E 13 Specifications 60 Hz 208 230V Note The data are based on the conditions shown in the table below Model Indoor Unit FTX09NMVJU FTX12NMVJU Outdoor Unit RX09NMVJU RX12NMVJU Cooling Heating Cooling Heating Capacity Rated Min Max kW 2 64 1 30 3 00 2 93 1 30 3 80 3 20 1 30 3 90 3 96 1 30 4 80 Btu h 9 000 4 400 10 200 10 000 4 400 13 000 10 900 4 400 1
57. E Wiring Diagrams Appendix 120 RXN18NMVJU RK X N24NMVJU RK X 18 24NMVJU FIELD WIRING INDOOR MRM20 IPM1 X1M DB1 TO INDOOR UNIT HL1 L1 1 BLK 1 MRM10 HN1 ZF V2 WHT 2 2 L2 S PAM C7 3 RED 3 V3 V1 L1 MR30 W V U GRN YLW L2 SA1 PS E1 POWER SUPPLY MRCW BLU RED YLW E2 GRN S40 S70 S90 S20 X11A S80 1 7 4 2 1 1 3 1 6 6 1 PCB GRN OUTDOOR BLK BLK RED RED BLK BLK BLK BLK BLK BLK ORG BLU RED BLU ORG BRN RED WHT WHT YLW NOTE 1 REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS V U W t t t MS M Y1S Q1L Y1E M1C M1F N 5 Z3C FU3 30A FU2 3 15A Z1C N 4 MS 3 FU1 3 15A N 4 Z2C IN CASE OF HEAT PUMP TYPE R1T OUTDOOR R3T DISCHARGE R2T CONDENSER C7 DB1 FU1 FU2 FU3 IPM1 L1 L2 M1C M1F MRM10 MRM20 MR30 MRCW PAM PCB CAPACITOR DIODE BRIDGE FUSE INTELLIGENT POWER MODULE LIVE COMPRESSOR MOTOR FAN MOTOR MAGNETIC RELAY PULSE AMPLITUDE MODULATION PRINTED CIRCUIT BOARD PS Q1L R1T R2T R3T S20 S40 S70 S80 S90 X11A SA1 SWITCHING POWER SUPPLY OVERLOAD PROTECTOR THERMISTOR CONNECTOR SURGE ABSORBER V1 V2 V3 X1M Y1E Y1S Z1C Z2C Z3C ZF VARISTOR TERMINAL BLOCK ELECTRONIC EXPANSION VALVE COIL REVERSING SOLENOID VALVE COIL FERRITE CORE NOISE FILTER PROTECTIVE GROUND GROU
58. ES NO NO YES NO Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Check the connector for connection Note The motor may break when the motor connector is disconnected with the power supply on Turn off the power supply before connecting the connector also To secure the connection once disconnect the connector and then reconnect it Foreign matters in or around the fan Is the rotation pulse generated Rotate the fan by hand Turn the power on again Check the fan motor for breakdown or short circuit Check the motor control voltage Check the indoor unit PCB for rotation pulse Fan rotates smoothly Resistance OK Is the motor control voltage 15 VDC generated Correct the connection Remove the foreign matters Replace the indoor fan motor Replace the indoor unit PCB control PCB Replace the indoor fan motor Replace the indoor unit PCB control PCB Turn off the power supply Unplug the power cable or turn the breaker off R20165 YES NO NO Abnormal sound occurs Is the rubber cushion properly fitted YES Correct the position of rubber cushion or replace the rubber cushion Replace the bearing rubber cushion Rubber cushion Bearing rubber cushion Troubleshooting SiUS041501E 65 Service Diagnosis 4 5 Thermistor or Related Abnormality Indoor Unit Error Co
59. F 1 hour TIMER operation NIGHT SET Mode ON Target temperature 2 C 3 6 F temperature shift 1 hour 2 C 3 6 F R21658 ECONO operation R21051 Normal operation Maximum during normal operation Maximum during ECONO operation Time Power consumption Main Functions SiUS041501E 31 Function and Control 1 10 Inverter POWERFUL Operation Outline In order to exploit the cooling and heating capacity to full extent the air conditioner can be operated by increasing the indoor fan rotating speed and the compressor frequency Detail When POWERFUL button is pressed the fan speed and target temperature are converted to the following states for 20 minutes A 09 12 class 80 rpm 18 24 class 50 rpm Ex POWERFUL operation in cooling Note POWERFUL operation cannot be used together with ECONO or COMFORT AIRFLOW operation Operation mode Fan speed Target temperature COOL H tap A rpm 18 C 64 4 F DRY Dry rotating speed A rpm Lowered by 2 5 C 4 5 F HEAT H tap A rpm 31 C 87 8 F FAN H tap A rpm AUTO Same as cooling heating in POWERFUL operation The target temperature is kept unchanged R21659 Target temp Fan A rpm 18 C 64 4 F H tap Set tap 20 minutes It should be the lower limit of cooling temperature It counts 20 minutes also in the remote controller POWERFUL ON POWERFUL OFF Ending condition 1 After the lapse
60. FIELD PIPING 1 4 CuT FIELD PIPING 3 8 CuT 4D092108 INDOOR UNIT 1 4 CuT DISTRIBUTOR HEAT EXCHANGER CROSS FLOW FAN M FAN MOTOR HEADER 1 2 CuT REFRIGERANT FLOW COOLING THERMISTOR ON HEAT EXCH FIELD PIPING 1 4 CuT FIELD PIPING 1 2 CuT 4D091771 INDOOR UNIT 1 4 CuT DISTRIBUTOR HEAT EXCHANGER CROSS FLOW FAN M FAN MOTOR HEADER 1 2 CuT REFRIGERANT FLOW COOLING THERMISTOR ON HEAT EXCH FIELD PIPING 1 4 CuT FIELD PIPING 5 8 CuT 4D091770 Piping Diagrams SiUS041501E 111 Appendix 1 1 2 Heat Pump FTXN09NMVJU FTXN12NMVJU FTX09 12NMVJU FTXN18NMVJU FTX18NMVJU FTXN24NMVJU FTX24NMVJU INDOOR UNIT HEAT EXCHANGER 1 4 CuT CROSS FLOW FAN M FAN MOTOR 3 8 CuT REFRIGERANT FLOW COOLING HEATING THERMISTOR ON HEAT EXCH SINGLE UNION JOINT SINGLE UNION JOINT FIELD PIPING 1 4 CuT FIELD PIPING 3 8 CuT 4D091706A INDOOR UNIT HEAT EXCHANGER 1 4 CuT CROSS FLOW FAN M FAN MOTOR 3 8 CuT REFRIGERANT FLOW COOLING HEATING THERMISTOR ON HEAT EXCH SINGLE UNION JOINT SINGLE UNION JOINT FIELD PIPING 1 4 CuT FIELD PIPING 3 8 CuT 4D091708A INDOOR UNIT 1 4 CuT DISTRIBUTOR HEAT EXCHANGER CROSS FLOW FAN M FAN MOTOR HEADER 1 2 CuT REFRIGERANT FLOW COOLING HEATING THERMISTOR ON HEAT EXCH FIELD PIPING 1 4 CuT FIELD PIPING 1 2 CuT 4D091769 INDOOR UNIT 1
61. ILLARY TUBE 2 REFRIGERANT FLOW 5 32 CuT COOLING HEATING M PROPELLER FAN STRAINER 1 2 CuT 1 4 CuT 1 2 CuT 1 2 CuT MUFFLER 5 16 CuT 1 4 CuT MUFFLER 1 2 CuT ACCUMULATOR 5 16 CuT COMPRESSOR FIELD PIPING 1 4 CuT FIELD PIPING 1 2 CuT GAS STOP VALVE WITH SERVICE PORT LIQUID STOP VALVE LIQUID RECEIVER ELECTRONIC EXPANSION VALVE MUFFLER WITH FILTER OUTDOOR AIR THERMISTOR HEAT EXCHANGER THERMISTOR FOUR WAY VALVE ON HEATING DISCHARGE PIPE THERMISTOR 3D092220 OUTDOOR UNIT HEAT EXCHANGER M 1 4 CuT MUFFLER 1 4 CuT MUFFLER 1 2 CuT ACCUMULATOR COMPRESSOR REFRIGERANT FLOW COOLING HEATING FIELD PIPING 1 4 CuT FIELD PIPING 5 8 CuT GAS STOP VALVE WITH SERVICE PORT LIQUID STOP VALVE STRAINER LIQUID RECEIVER ELECTRONIC EXPANSION VALVE MUFFLER WITH FILTER 1 4 CuT 1 4 CuT CAPILLARY TUBE 1 5 32 CuT CAPILLARY TUBE 2 5 32 CuT PROPELLER FAN OUTDOOR AIR THERMISTOR HEAT EXCHANGER THERMISTOR 1 2 CuT 1 2 CuT 1 2 CuT FOUR WAY VALVE ON HEATING 9 32 CuT 9 32 CuT 9 32 CuT 1 2 CuT 9 32 CuT 5 16 CuT 5 16 CuT DISCHARGE PIPE THERMISTOR 3D092221 Piping Diagrams SiUS041501E 117 Appendix RX24NMVJU OUTDOOR UNIT HEAT EXCHANGER 9 32 CuT 9 32 CuT 9 32 CuT 5 32 CuT 9 32 CuT 1 2 CuT 5 32 CuT 9 32 CuT 9 32 CuT 5 32 CuT M PROPELLER FAN MUFFLER 5 16 CuT MUFFLER
62. Input current control Refer to page 40 Freeze up protection control Refer to page 41 Heating peak cut control Refer to page 41 Defrost control Refer to page 43 Main Functions SiUS041501E 25 Function and Control 1 3 Airflow Direction Control Power Airflow Flap The large flap sends a large volume of air downward to the floor and provides an optimum control in cooling dry and heating operation lt Cooling Dry gt During cooling or dry operation the flap retracts into the indoor unit Then cool air can be blown far and distributed all over the room lt Heating gt During heating operation the large flap directs airflow downward to spread the warm air to the entire room Wide Angle Louvers The louvers made of elastic synthetic resin provide a wide range of airflow that guarantees comfortable air distribution Auto Swing The following table explains the auto swing process for cooling dry heating and fan COMFORT AIRFLOW Operation The flap is controlled not to blow the air directly at the people in the room Flap up and down Cooling Dry Heating Fan 09 12 class 18 24 class R21048 5 50 R21049 15 65 R21050 0 65 R21651 15 30 55 70 R21652 80 65 20 35 R21653 25 80 10 65 Cooling Heating 09 12 class 18 24 class R21186 0 R21187 65 R21861 10 SiUS041501E
63. M1 X1M DB1 L1R MRM10 HR2 HL1 HR1 BLK BRN 1 L1 ORG 1 WHT ZF 2 L2 2 HN1 V2 C400 RED 3 3 INDOOR S V3 L1 C405 MR30 V150 L2 GRN YLW U V W SA1 E1 POWER SUPPLY MRCW PS E2 S90 S20 S40 GRN FIELD WIRING 5 6 1 1 1 7 1 2 1 3 GRN OUTDOOR S71 S30 S80 PCB1 RED RED BLU RED ORG BLK BLK BLU BLK RED BLK ORG BLK BLK BRN WHT BLK WHT BLK YLW BLU RED YLW Y1S V t t t U M W MS Q1L Y1E M1F M1C Z1C N 4 Z2C N 2 FU3 20A Z3C N 2 MS 3 IN CASE OF HEAT PUMP TYPE FU2 3 15A NOTE 1 REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS C400 C405 DB1 FU1 FU2 FU3 IPM1 L1 L2 L1R M1C M1F MR30 MRM10 MRCW PCB1 CAPACITOR DIODE BRIDGE FUSE INTELLIGENT POWER MODULE LIVE REACTOR COMPRESSOR MOTOR FAN MOTOR MAGNETIC RELAY PRINTED CIRCUIT BOARD PS Q1L R1T R2T R3T S20 S30 S40 S71 S80 S90 SA1 V2 V3 V150 SWITCHING POWER SUPPLY OVERLOAD PROTECTOR THERMISTOR CONNECTOR SURGE ARRESTER VARISTOR X1M Y1E Y1S Z1C Z3C ZF TERMINAL STRIP ELECTRONIC EXPANSION VALVE COIL REVERSING SOLENOID VALVE COIL FERRITE CORE NOISE FILTER PROTECTIVE GROUND FU1 3 15A R1T OUTDOOR R3T DISCHARGE R2T CONDENSER C 3D091491 SiUS041501
64. Main Functions Function and Control 26 1 4 Fan Speed Control for Indoor Unit Outline Phase control and fan speed control contains 9 steps LLL LL SL L ML M MH H and HH The airflow rate can be automatically controlled depending on the difference between the room thermistor temperature and the target temperature Automatic Fan Speed Control In automatic fan speed operation the step SL is not available The airflow rate is automatically controlled within this range when the FAN button is set to automatic lt Cooling gt The following drawing explains the principle of fan speed control for cooling The upper limit is M tap in 30 minutes from the operation start lt Heating gt In heating operation the fan speed is regulated according to the indoor heat exchanger temperature and the difference between the room thermistor temperature and the target temperature Note The fan stops during defrost control COMFORT AIRFLOW Operation The fan speed is controlled automatically within the following steps lt Cooling gt L tap MH tap same as automatic lt Heating gt L tap M tap The latest command has the priority between POWERFUL and COMFORT AIRFLOW Step Cooling Heating LLL LL L ML M MH H HH POWERFUL R11681 R6834 R21654 Fan speed 2 5 C 4 5 F 1 5 C 2 7 F 0 5 C 0 9 F MH M ML L 3 C 5 4 F 2 C 3 6 F 1 C 1 8 F R
65. ND C 3D089070 Revision History Month Year Version Revised contents 03 2015 SiUS041501E First edition Warning Daikin products are manufactured for export to numerous countries throughout the world Prior to purchase please confirm with your local authorized importer distributor and or retailer whether this product conforms to the applicable standards and is suitable for use in the region where the product will be used This statement does not purport to exclude restrict or modify the application of any local legislation Ask a qualified installer or contractor to install this product Do not try to install the product yourself Improper installation can result in water or refrigerant leakage electrical shock fire or explosion Use only those parts and accessories supplied or specified by Daikin Ask a qualified installer or contractor to install those parts and accessories Use of unauthorized parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion Read the user s manual carefully before using this product The user s manual provides important safety instructions and warnings Be sure to follow these instructions and warnings If you have any inquiries please contact your local importer distributor and or retailer Cautions on product corrosion 1 Air conditioners should not be installed in areas w
66. Power Consumption Rated Min Max W 1 401 295 1 542 1 381 329 1 565 2 403 295 2 550 1 790 335 2 090 Power Factor Rated 95 5 95 6 95 9 95 9 98 0 98 0 97 6 97 6 COP Rated Min Max W W 3 58 5 08 3 42 3 82 4 56 3 58 2 68 5 08 2 64 3 60 4 48 3 56 EER Rated Min Max Btu h W 12 2 17 3 11 7 13 0 15 5 12 2 9 2 17 3 9 0 12 3 15 2 12 2 SEER HSPF 15 0 8 2 15 0 8 2 Piping Connections Liquid in mm 1 4 6 4 1 4 6 4 Gas in mm 1 2 12 7 5 8 15 9 Drain in mm 5 8 16 0 5 8 16 0 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Max Interunit Piping Length ft m 98 1 2 30 98 1 2 30 Max Interunit Height Difference ft m 65 5 8 20 65 5 8 20 Chargeless ft m 32 13 16 10 32 13 16 10 Amount of Additional Charge of Refrigerant oz ft g m 0 21 20 0 21 20 Indoor Unit FTXN18NMVJU FTXN24NMVJU Front Panel Color White White Airflow Rate H m min cfm 20 2 713 18 7 660 20 2 713 21 1 745 M 16 4 579 16 1 568 16 4 579 17 1 604 L 12 9 455 13 3 470 13 9 491 13 3 470 SL 11 8 417 11 9 420 11 8 417 11 9 420 Fan Type Cross Flow Fan Cross Flow Fan Motor Output W 46 46 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Direction Control Right Left Horizontal Downward Right Left Horizontal
67. R M1S PCB1 PCB2 R1T R2T S6 S403 SWING MOTOR PRINTED CIRCUIT BOARD THERMISTOR CONNECTOR S1W X1M V2 MR10 OPERATION SWITCH TERMINAL STRIP VARISTOR RELAY C 3D086429B Z2C N 2 FG PCB1 FIELD WIRING GRN CAUTION GRN MR10 HE GRN YLW L301 3 MR10 2 RED 3 V2 OUTDOOR 1 WHT 2 RECTIFIER BLK 1 S100 X1M PCB3 12 1 S800 LED1 H1P WHT BLK WHT WHT WHT WHT H2P LED2 S900 S26 12 S27 PCB2 1 BLK 10 10 S1W BLK BLK BLK R1T BLK BLK t BLK IPM203 IPM202 IPM201 BLK BLK 1 BLK 1 1 1 2 12 10 1 5 1 S200 S403 S32 S6 BLK BLK YLW BLK BLK BLU ORG RED WHT BLK BLK BLK BLK t R2T M M INDOOR M1F M1S FG HE S6 S900 FU1 L301 M1F M1S MR10 PCB1 PCB3 R1T R2T S1W V2 X1M Z1C Z2C CONNECTOR FUSE COIL FAN MOTOR SWING MOTOR RELAY PRINTED CIRCUIT BOARD THERMISTOR OPERATION SWITCH VARISTOR TERMINAL STRIP FERRITE CORE PROTECTIVE GROUND NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN WIRELESS REMOTE CONTROLLER SIGNAL RECEIVER TRANSMISSION CIRCUIT FU1 3 15A Z1C N 2 C 3D090199 Wiring Diagrams SiUS041501E 119 Appendix 2 2 Outdoor Unit RK X N09 12NMVJU RK X 09 12NMVJU RKN18NMVJU
68. Service Manual Inverter Pair Wall Mounted Type FTK X N N FTK X N Series SiUS041501E Applied Models Inverter Pair Cooling Only Inverter Pair Heat Pump SiUS041501E i Table of Contents Inverter Pair Wall Mounted Type FTK X N N FTK X N Series Cooling Only Indoor Unit FTKN09NMVJU FTK09NMVJU FTKN12NMVJU FTK12NMVJU FTKN18NMVJU FTK18NMVJU FTKN24NMVJU FTK24NMVJU Outdoor Unit RKN09NMVJU RK09NMVJU RKN12NMVJU RK12NMVJU RKN18NMVJU RK18NMVJU RKN24NMVJU RK24NMVJU Heat Pump Indoor Unit FTXN09NMVJU FTX09NMVJU FTXN12NMVJU FTX12NMVJU FTXN18NMVJU FTX18NMVJU FTXN24NMVJU FTX24NMVJU Outdoor Unit RXN09NMVJU RX09NMVJU RXN12NMVJU RX12NMVJU RXN18NMVJU RX18NMVJU RXN24NMVJU RX24NMVJU SiUS041501E Table of Contents ii 1 Safety Cautions v 1 1 Warnings and Cautions Regarding Safety of Workers v 1 2 Warnings and Cautions Regarding Safety of Users vii 2 Used Icons x Part 1 List of Functions 1 1 Functions 2 Part 2 Specifications
69. TELLIGENT EYE operation Low temperature cooling operation 15 C 5 F Quick warming function Hot start function F C changeover R C temperature display factory setting F Automatic defrosting Operation Automatic operation Remote Control 5 rooms centralized controller option Program dry function Remote control adaptor normal open pulse contact option Fan only Lifestyle Convenience New POWERFUL operation non inverter Remote control adaptor normal open contact option Inverter POWERFUL operation DIII NET compatible adaptor option Priority room setting Remote Controller Wireless COOL HEAT mode lock Wired option HOME LEAVE operation ECONO operation Indoor unit ON OFF button Signal receiving sign R C with back light Temperature display Note Available Not available Functions SiUS041501E 3 List of Functions Category Functions FTKN18 24NMVJU RKN18 24NMVJU FTXN18 24NMVJU RXN18 24NMVJU Category Functions FTKN18 24NMVJU RKN18 24NMVJU FTXN18 24NMVJU RXN18 24NMVJU Basic Function Inverter with inverter power control Health amp Clean Air purifying filter Operation limit for cooling CDB 10 46 10 46 Photocatalytic deodorizing filter Air purifying filter with photocatalytic deodorizing function Operation limit for cooling
70. VJU RK24NMVJU OUTDOOR UNIT HEAT EXCHANGER M 1 4 CuT MUFFLER 1 4 CuT MUFFLER 1 2 CuT ACCUMULATOR COMPRESSOR REFRIGERANT FLOW COOLING FIELD PIPING 1 4 CuT FIELD PIPING 5 8 CuT GAS STOP VALVE WITH SERVICE PORT LIQUID STOP VALVE STRAINER LIQUID RECEIVER ELECTRONIC EXPANSION VALVE MUFFLER WITH FILTER 1 4 CuT 1 4 CuT CAPILLARY TUBE 1 5 32 CuT CAPILLARY TUBE 2 5 32 CuT PROPELLER FAN OUTDOOR AIR THERMISTOR HEAT EXCHANGER THERMISTOR 1 2 CuT 1 2 CuT 1 2 CuT 9 32 CuT 9 32 CuT 9 32 CuT 1 2 CuT 9 32 CuT 5 16 CuT 5 16 CuT DISCHARGE PIPE THERMISTOR FOUR WAY VALVE 3D092223 OUTDOOR UNIT MUFFLER MUFFLER ACCUMULATOR COMPRESSOR FIELD PIPING 1 4 CuT FIELD PIPING 5 8 CuT REFRIGERANT FLOW COOLING 1 4 CuT 1 2 CuT GAS STOP VALVE WITH SERVICE PORT LIQUID STOP VALVE 1 4 CuT STRAINER LIQUID RECEIVER ELECTRONIC EXPANSION VALVE MUFFLER WITH FILTER HEAT EXCHANGER 5 32 CuT 5 32 CuT 5 32 CuT 1 4 CuT 1 4 CuT CAPILLARY TUBE 1 CAPILLARY TUBE 2 CAPILLARY TUBE 3 OUTDOOR AIR THERMISTOR 9 32 CuT 9 32 CuT 9 32 CuT 9 32 CuT 1 2 CuT 9 32 CuT 9 32 CuT M PROPELLER FAN 1 2 CuT 1 2 CuT 1 2 CuT HEAT EXCHANGER THERMISTOR FOUR WAY VALVE 5 16 CuT 5 16 CuT DISCHARGE PIPE THERMISTOR 3D092250 Piping Diagrams SiUS041501E 115 Appendix 1 2 2 Heat Pum
71. are used to attract the attention of the reader to specific information Icon Type of Information Description Warning Warning A Warning is used when there is danger of personal injury Caution Caution A Caution is used when there is danger that the reader through incorrect manipulation may damage equipment lose data get an unexpected result or has to restart part of a procedure Note Note A Note provides information that is not indispensable but may nevertheless be valuable to the reader such as tips and tricks Reference A Reference guides the reader to other places in this binder or in this manual where he she will find additional information on a specific topic SiUS041501E 1 List of Functions Part 1 List of Functions 1 Functions 2 SiUS041501E Functions List of Functions 2 1 Functions Category Functions FTKN09 12NMVJU RKN09 12NMVJU FTXN09 12NMVJU RXN09 12NMVJU Category Functions FTKN09 12NMVJU RKN09 12NMVJU FTXN09 12NMVJU RXN09 12NMVJU Basic Function Inverter with inverter power control Health amp Clean Air purifying filter Operation limit for cooling CDB 10 46 10 46 Photocatalytic deodorizing filter Air purifying filter with photocatalytic deodorizing function Operation limit for cooling FDB 50 114 8 50 114
72. ature difference D signal Temperature difference D signal 2 0 C 3 6 F OFF 0 C 0 F 4 2 0 C 3 6 F 8 4 0 C 7 2 F C 1 5 C 2 7 F 1 0 5 C 0 9 F 5 2 5 C 4 5 F 9 4 5 C 8 1 F D 1 0 C 1 8 F 2 1 0 C 1 8 F 6 3 0 C 5 4 F A 5 0 C 9 0 F E 0 5 C 0 9 F 3 1 5 C 2 7 F 7 3 5 C 6 3 F B 5 5 C 9 9 F F Control Specification SiUS041501E 37 Function and Control 3 3 Controls at Mode Changing Start up 3 3 1 Preheating Operation Outline The inverter operation in open phase starts with the conditions of the outdoor temperature the discharge pipe temperature the radiation fin temperature and the preheating command from the indoor unit Detail Outdoor temperature 2 5 C 27 5 F Control A preheating for normal state Outdoor temperature lt 2 5 C 27 5 F Control B preheating of increased capacity Control A ON condition Discharge pipe temperature lt 0 C 32 0 F Radiation fin temperature lt 85 C 185 F OFF condition Discharge pipe temperature gt 2 C 35 6 F Radiation fin temperature 90 C 194 F Control B ON condition Discharge pipe temperature lt 10 C 50 0 F Radiation fin temperature lt 85 C 185 F OFF condition Discharge pipe temperature gt 12 C 53 6 F Radiation fin temperature 90 C 194 F 3 3 2 Four Way Valve Switching Outline The four way valve
73. ature Rise 87 4 21 Radiation Fin Temperature Rise 88 4 22 Output Overcurrent Detection 89 5 Check 91 5 1 Thermistor Resistance Check 91 5 2 Fan Motor Connector Output Check 92 5 3 Power Supply Waveforms Check 93 5 4 Electronic Expansion Valve Check 93 5 5 Four Way Valve Performance Check 94 5 6 Inverter Unit Refrigerant System Check 94 5 7 Inverter Analyzer Check 95 5 8 Rotation Pulse Check on the Outdoor Unit PCB 97 5 9 Installation Condition Check 98 5 10 Discharge Pressure Check 98 5 11 Outdoor Fan System Check
74. city Rated Min Max kW 5 28 1 60 5 86 6 33 1 60 7 03 6 20 1 60 7 03 7 03 1 70 8 10 Btu h 18 000 5 500 20 000 21 600 5 500 24 000 21 200 5 500 24 000 24 000 5 800 27 600 kcal h 4 540 1 380 5 040 5 440 1 380 6 050 5 330 1 380 6 050 6 050 1 460 6 970 Moisture Removal gal h 1 00 1 20 Running Current Rated A 7 20 6 51 8 68 7 85 8 41 7 60 9 90 8 95 Power Consumption Rated Min Max W 1 441 295 1 745 1 758 348 2 000 1 696 290 2 255 2 010 381 2 380 Power Factor Rated 96 2 96 2 97 4 97 4 97 0 97 0 97 6 97 6 COP Rated Min Max W W 3 66 5 42 3 36 3 60 4 60 3 52 3 66 5 52 3 12 3 50 4 46 3 40 EER Rated Min Max Btu h W 12 5 18 6 11 5 12 3 15 8 12 0 12 5 19 0 10 6 11 9 15 2 11 6 SEER HSPF 18 0 9 0 18 0 9 0 Piping Connections Liquid in mm 1 4 6 4 1 4 6 4 Gas in mm 1 2 12 7 5 8 15 9 Drain in mm 5 8 16 0 5 8 16 0 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Max Interunit Piping Length ft m 98 1 2 30 98 1 2 30 Max Interunit Height Difference ft m 65 5 8 20 65 5 8 20 Chargeless ft m 32 13 16 10 32 13 16 10 Amount of Additional Charge of Refrigerant oz ft g m 0 21 20 0 21 20 Indoor Unit FTX18NMVJU FTX24NMVJU Front Panel Color White White A
75. cooling operation ON OFF button Refer to page 103 for detail 3 LED1 H1P LED for operation green 4 LED2 H2P LED for timer yellow 5 RTH1 R1T Room temperature thermistor S27 SW1 Solder side LED2 LED1 RTH1 3P185701 4 LED3 is not mounted SiUS041501E Indoor Unit Printed Circuit Board Connector Wiring Diagram 18 1 2 18 24 Class Control PCB PCB2 1 S6 Connector for swing motor horizontal blade 2 S26 Connector for display PCB 3 S32 Connector for indoor heat exchanger thermistor 4 S200 Connector for DC fan motor 5 S900 Connector for filter PCB S26 S900 3P380931 1 S6 S32 S200 Indoor Unit SiUS041501E 19 Printed Circuit Board Connector Wiring Diagram Filter PCB PCB1 Display PCB PCB3 Note The symbols in the parenthesis are the names on the appropriate wiring diagram 1 S100 Connector for terminal board 2 S800 Connector for control PCB 3 FG HE Connector for ground 4 FU1 Fuse 3 15 A 250 V 5 V2 Varistor 3P380932 1 FG S800 V2 HE S100 FU1 1 S27 Connector for control PCB 2 SW1 S1W Forced cooling operation ON OFF button Refer to page 103 for detail 3 LED1 H1P LED for operation green 4 LED2 H2P LED for timer yellow 5 RTH1 R1T Room temperature thermistor S27 SW1 Solder side LED2 LED1 RTH1 3P185701 5 LED3 is not mounted SiUS041501E Outdoor Unit Printed Circuit Board Connect
76. cted by room temperature thermistor 1 2 Frequency Principle Control Parameters The frequency of the compressor is controlled by the following 2 parameters The load condition of the operating indoor unit The difference between the room thermistor temperature and the target temperature The target frequency is adapted by additional parameters in the following cases Frequency restrictions Initial settings Forced cooling operation Inverter Principle To regulate the capacity a frequency control is needed The inverter makes it possible to control the rotation speed of the compressor The following table explains the inverter principle Target temperature Set temperature Room temperature Room thermistor temperature R12321 Phase Description 1 The supplied AC power source is converted into the DC power source for the present 2 The DC power source is reconverted into the three phase AC power source with variable frequency When the frequency increases the rotation speed of the compressor increases resulting in an increase of refrigerant circulation This leads to a larger amount of heat exchange per unit When the frequency decreases the rotation speed of the compressor decreases resulting in a decrease of refrigerant circulation This leads to a smaller amount of heat exchange per unit SiUS041501E Main Functions Function and Control 24 The following drawing shows a schematic view of the inverter principle Inv
77. d improper electrical work may cause an electrical shock or fire Be sure to use the specified cable for wiring between the indoor and outdoor units Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals Improper connections may cause excessive heat generation or fire SiUS041501E Safety Cautions viii When wiring between the indoor and outdoor units make sure that the terminal cover does not lift off or dismount because of the cable If the cover is not mounted properly the terminal connection section may cause an electrical shock excessive heat generation or fire Do not damage or modify the power cable Damaged or modified power cable may cause an electrical shock or fire Placing heavy items on the power cable and heating or pulling the power cable may damage the cable Do not mix air or gas other than the specified refrigerant R 32 R 410A R 22 in the refrigerant system If air enters the refrigerating system an excessively high pressure results causing equipment damage and injury If the refrigerant gas leaks be sure to locate the leaking point and repair it before charging the refrigerant After charging refrigerant make sure that there is no refrigerant leak If the leaking point cannot be located and the repair work must be stopped be sure to perform pump down and close the service valve to prevent the refrigerant gas from leaking into
78. dB A 56 59 Drawing No 3D091699A 3D091700A Conversion Formulae kcal h kW 860 Btu h kW 3412 cfm m min 35 3 Cooling Indoor 80 FDB 26 7 CDB 67 FWB 19 4 CWB Outdoor 95 FDB 35 CDB 75 FWB 24 CWB Piping Length 25 ft 7 5 m Specifications SiUS041501E 9 Specifications 60 Hz 208 230 V Note The data are based on the conditions shown in the table below Model Indoor Unit FTK09NMVJU FTK12NMVJU Outdoor Unit RK09NMVJU RK12NMVJU Capacity Rated Min Max kW 2 64 1 30 3 00 3 20 1 30 3 90 Btu h 9 000 4 400 10 200 10 900 4 400 13 300 kcal h 2 270 1 120 2 580 2 750 1 120 3 350 Moisture Removal gal h 0 32 0 45 Running Current Rated A 3 77 3 41 4 42 3 99 Power Consumption Rated Min Max W 721 250 962 874 260 1 383 Power Factor Rated 91 9 91 9 95 1 95 2 COP Rated Min Max W W 3 66 5 20 3 12 3 66 5 00 2 82 EER Rated Min Max Btu h W 12 5 17 6 10 6 12 5 16 9 9 6 SEER 19 0 19 0 Piping Connections Liquid in mm 1 4 6 4 1 4 6 4 Gas in mm 3 8 9 5 3 8 9 5 Drain in mm 5 8 16 0 5 8 16 0 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Max Interunit Piping Length ft m 65 5 8 20 65 5 8 20 Max Interunit Height Difference ft m 49 1 4 15 49 1 4 15 Chargeless ft m 32 13 16 10 3
79. de C4 C9 Method of Error Detection The temperatures detected by the thermistors determine thermistor errors Error Decision Conditions The voltage between the both ends of the thermistor is 4 96 V and more or 0 04 V and less during compressor operation Supposed Causes Disconnection of connector Thermistor corresponding to the error code is defective Defective indoor unit PCB Troubleshooting Check No 01 Refer to P 91 C4 Indoor heat exchanger thermistor C9 Room temperature thermistor YES R21870 NO Check No 01 Check the thermistor resistance value YES NO Caution Correct the connection Replace the defective thermistor Replace the indoor unit PCB control PCB Normal Normal Check the connection of connectors Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged SiUS041501E Troubleshooting Service Diagnosis 66 4 6 Low voltage Detection or Over voltage Detection Error Code U2 Method of Error Detection Low voltage detection An abnormal voltage drop is detected by the DC voltage detection circuit Over voltage detection An abnormal voltage rise is detected by the over voltage detection circuit Error Decision Conditions Low voltage detection The voltage detected by the DC voltage detection circuit is below 180 196 V depending on the model The compressor stops if the error occurs and restarts aut
80. diode bridge Silicon grease Radiation fin PCB R21866 Foreign matter R21867 SiUS041501E 109 Appendix Part 8 Appendix 1 Piping Diagrams 110 1 1 Indoor unit 110 1 2 Outdoor Unit 112 2 Wiring Diagrams 118 2 1 Indoor Unit 118 2 2 Outdoor Unit 119 SiUS041501E Piping Diagrams Appendix 110 1 Piping Diagrams 1 1 Indoor unit 1 1 1 Cooling Only FTKN09NMVJU FTKN12NMVJU FTK09 12NMVJU FTKN18NMVJU FTK18NMVJU FTKN24NMVJU FTK24NMVJU INDOOR UNIT HEAT EXCHANGER 1 4 CuT CROSS FLOW FAN M FAN MOTOR 3 8 CuT REFRIGERANT FLOW COOLING THERMISTOR ON HEAT EXCH FIELD PIPING 1 4 CuT FIELD PIPING 3 8 CuT SINGLE UNION JOINT SINGLE UNION JOINT 4D092107 INDOOR UNIT HEAT EXCHANGER 1 4 CuT CROSS FLOW FAN M FAN MOTOR 3 8 CuT REFRIGERANT FLOW COOLING THERMISTOR ON HEAT EXCH SINGLE UNION JOINT SINGLE UNION JOINT
81. e drain right or left Power selection INTELLIGENT EYE operation Low temperature cooling operation 15 C 5 F Quick warming function Hot start function F C changeover R C temperature display factory setting F Automatic defrosting Operation Automatic operation Remote Control 5 rooms centralized controller option Program dry function Remote control adaptor normal open pulse contact option Fan only Lifestyle Convenience New POWERFUL operation non inverter Remote control adaptor normal open contact option Inverter POWERFUL operation DIII NET compatible adaptor option Priority room setting Remote Controller Wireless COOL HEAT mode lock Wired option HOME LEAVE operation ECONO operation Indoor unit ON OFF button Signal receiving sign R C with back light Temperature display Note Available Not available Functions SiUS041501E 5 List of Functions Category Functions FTK18 24NMVJU RK18 24NMVJU FTX18 24NMVJU RX18 24NMVJU Category Functions FTK18 24NMVJU RK18 24NMVJU FTX18 24NMVJU RX18 24NMVJU Basic Function Inverter with inverter power control Health amp Clean Air purifying filter Operation limit for cooling CDB 10 46 10 46 Photocatalytic deodorizing filter Air purifying filter with photocatalytic deodorizing function Ope
82. e fan motor Defective outdoor unit PCB Troubleshooting Check No 16 Refer to P 97 R21669 Caution YES YES NO YES NO NO YES NO NO Turn on the power Rotate the fan YES Check No 16 Check the rotation pulse input on the outdoor unit PCB main PCB Turn off the power and reconnect the connector Remove the foreign matters Replace the outdoor fan motor Replace the fuse Replace the outdoor unit PCB main PCB Fan motor connector disconnected Foreign matters in or around the fan Replace the outdoor fan motor Fan rotates smoothly Pulse signal generated Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Is the fuse for the fan motor blown FU2 SiUS041501E Troubleshooting Service Diagnosis 76 4 13 Input Overcurrent Detection Error Code E8 Method of Error Detection An input overcurrent is detected by checking the input current value with the compressor running Error Decision Conditions The current exceeds about 7 75 18 0 A depending on the model and operation mode for 2 5 seconds with the compressor running The upper limit of the current decreases when the outdoor temperature exceeds a certain level Supposed Causes Outdoor temperature is out of operation range Defective compressor Defective power module Defective outdoor unit PCB Short circuit Troubleshooting Ch
83. e flap stops when you press the SWING button again TIMER CANCEL button Cancels the timer setting OFF TIMER button Adjusts the OFF TIMER setting The timer can be set 1 12 hours 2 COMFORT AIRFLOW operation P 25 P 26 4 ECONO operation P 30 3 POWERFUL operation P 31 5 Auto swing setting P 25 SiUS041501E 53 Service Diagnosis Part 6 Service Diagnosis 1 General Problem Symptoms and Check Items 55 2 Troubleshooting with LED 56 2 1 Indoor Unit 56 2 2 Outdoor Unit 56 3 Service Diagnosis 57 4 Troubleshooting 60 4 1 Error Codes and Description 60 4 2 Indoor Unit PCB Abnormality 61 4 3 Freeze up Protection Control Heating Peak cut Control 62 4 4 Fan Motor DC Motor or Related Abnormality 63 4 5 Thermistor or Related Abnormality Indoo
84. e indoor temperature and starts the operation Direct operation buttons Starts the COOL DRY HEAT or FAN ONLY operation 1 Automatic operation P 26 SiUS041501E Heat Pump Remote Controller 52 Reference Refer to the following pages for detail Note Refer to the operation manual of applicable model for detail You can download operation manual from Daikin Business Portal Daikin Business Portal Product Information Operation Installation Manual URL https global1d daikin com business_portal login R21664 TEMPERATURE adjustment button Changes the temperature setting AUTO DRY COOL HEAT FAN 64 86 F 18 30 C Not available 64 90 F 18 32 C 50 86 F 10 30 C Not available ECONO4 button Starts ECONO operation POWERFUL3 button Starts POWERFUL operation COMFORT2 button Starts COMFORT AIRFLOW operation ON TIMER button Adjusts the ON TIMER setting The timer can be set 1 12 hours In indoor unit quiet operation operation sound becomes weak The airflow rate also decreases In DRY operation the airflow rate setting is not available FAN setting button Selects the airflow rate setting every time you press this button AUTO Indoor unit quiet Airflow rate 1 5 Low to High SWING5 button Adjusts the airflow direction When you press the SWING button the flap moves up and down Th
85. eating Function When the automatic operation is selected with the remote controller the microcomputer automatically determines the operation mode as cooling or heating according to the room temperature and the set temperature at start up The unit automatically switches the operation mode to maintain the room temperature at the set temperature Detail Ts set temperature set by remote controller Tt target temperature determined by microcomputer Tr room thermistor temperature detected by room temperature thermistor C correction value 1 The set temperature Ts determines the target temperature Tt Ts 18 30 C 64 4 86 F 2 The target temperature Tt is calculated as Tt Ts C where C is the correction value C 0 C 0 F 3 Thermostat ON OFF point and operation mode switching point are as follows Tr means the room thermistor temperature 1 Heating Cooling switching point Tr Tt 3 0 C 5 4 F 2 Cooling Heating switching point Tr lt Tt 3 0 C 5 4 F 3 Thermostat ON OFF point is the same as the ON OFF point of cooling or heating operation 4 During initial operation Tr Ts Cooling operation Tr lt Ts Heating operation Ex When the target temperature is 25 C 77 F Cooling 23 C 73 4 F Thermostat OFF 22 C 71 6 F Switch to heating Heating 27 C 80 6 F Thermostat OFF 28 C 82 4 F Switch to cooling Target temperature 3 0 C 5 4 F
86. eck No 15 Refer to P 95 Check No 17 Refer to P 98 Check No 18 Refer to P 98 Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged An input overcurrent may result from wrong internal wiring If the system is interrupted by an input overcurrent after the wires have been disconnected and reconnected for part replacement check the wiring again R21863 NO YES YES NO Start operation and measure the input current Check No 18 Check the discharge pressure Check No 17 Check the installation condition Check No 15 Check with the inverter analyzer Turn off the power and disconnect the harnesses U V and W Turn off the power and reconnect the harnesses Turn on the power again and start operation Replace the outdoor unit PCB main PCB Correct the power supply or replace the outdoor unit PCB main PCB Any LED off Input current flowing above its stop level Inverter analyzer RSUK0917C Troubleshooting SiUS041501E 77 Service Diagnosis 4 14 Four Way Valve Abnormality Error Code EA Method of Error Detection The room temperature thermistor and the indoor heat exchanger thermistor are checked if they function within their normal ranges in each operation mode Error Decision Conditions A following condition continues over 10 minutes after operating for 5 minutes Cooling Dry A B lt 5 C A B
87. ector for DC fan motor 4 S80 Connector for four way valve coil heat pump model only 5 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 6 HL1 HN1 S Connector for terminal board 7 E1 E2 Terminal for ground 8 U V W Connector for compressor 9 FU1 FU2 Fuse 3 15 A 250 V 10 FU3 Fuse 30 A 250 V 11 J6 Jumper for facility setting RK X N models only Refer to page 107 for detail 12 LED A LED for service monitor green 13 V1 V2 V3 Varistor U V W FU3 FU1 FU2 V3 V2 V1 S20 S80 S40 S90 J6 S70 2P382390 6 E1 E2 HL1 HN1 S LED A SiUS041501E Function and Control 22 Part 4 Function and Control 1 Main Functions 23 1 1 Temperature Control 23 1 2 Frequency Principle 23 1 3 Airflow Direction Control 25 1 4 Fan Speed Control for Indoor Unit 26 1 5 Program Dry Operation 27 1 6 Automatic Operation
88. ed Min Max W W 3 04 4 68 2 64 3 88 4 76 3 50 3 08 5 00 3 04 3 86 5 00 3 68 EER Rated Min Max Btu h W 10 4 15 8 9 0 13 2 16 1 12 0 10 5 16 9 10 4 13 2 16 9 12 6 SEER HSPF 15 0 8 2 15 0 8 2 Piping Connections Liquid in mm 1 4 6 4 1 4 6 4 Gas in mm 3 8 9 5 3 8 9 5 Drain in mm 5 8 16 0 5 8 16 0 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Max Interunit Piping Length ft m 49 1 4 15 49 1 4 15 Max Interunit Height Difference ft m 39 3 8 12 39 3 8 12 Chargeless ft m 32 13 16 10 32 13 16 10 Amount of Additional Charge of Refrigerant oz ft g m 0 21 20 0 21 20 Indoor Unit FTXN09NMVJU FTXN12NMVJU Front Panel Color White White Airflow Rate H m min cfm 11 4 403 11 5 406 12 0 424 11 7 413 M 8 1 286 9 0 318 8 5 300 9 1 321 L 6 2 219 7 0 247 7 0 247 7 0 247 SL 4 1 145 6 1 215 4 0 141 6 0 212 Fan Type Cross Flow Fan Cross Flow Fan Motor Output W 18 22 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Direction Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 23 0 21 0 23 0 21 0 27 0 24 0 25 0 23 Power Consumption Rated W 25 25 25 25 29
89. ed for detecting disconnection of the discharge pipe thermistor 3 Indoor Heat Exchanger Thermistor 1 The indoor heat exchanger thermistor is used for controlling the target discharge pipe temperature The system sets the target discharge pipe temperature according to the outdoor and indoor heat exchanger temperature and controls the electronic expansion valve opening so that the target discharge pipe temperature can be obtained 2 In cooling operation the indoor heat exchanger thermistor is used for freeze up protection control If the indoor heat exchanger temperature drops abnormally the operating frequency becomes lower or the operation halts 3 In heating operation the indoor heat exchanger thermistor is used for detecting the disconnection of the discharge pipe thermistor When the discharge pipe temperature drops below the indoor heat exchanger temperature by more than a certain value the discharge pipe thermistor is judged as disconnected Four way valve Compressor R14247 3 2 Electronic expansion valve 1 SiUS041501E Control Specification Function and Control 34 3 Control Specification 3 1 Mode Hierarchy Outline The air conditioner control has normal operation mode forced operation mode and power transistor test mode for installation and servicing Detail Cooling Only Model Heat Pump Model Note Unless specified otherwise a dry operation command is regarded as cooling operation
90. een and of the power module is approximately 0 V before checking Disconnect the compressor harness connector from the outdoor unit PCB To disengage the connector press the protrusion on the connector Follow the procedure below to measure resistance between the terminals of the power module and the terminals of the compressor with a multimeter Evaluate the measurement results referring to the following table R20701 1 2 3 4 Multimeter Positive terminal of digital multimeter Power module UVW Power module UVW Negative terminal of digital multimeter UVW Power module UVW Power module Resistance is OK several k several M Resistance is NG 0 or Check SiUS041501E 101 Service Diagnosis 09 12 class RKN18NMVJU RXN18NMVJU RK X 18NMVJU 24 class Pin 24 Pin 23 U Pin 22 V Pin 21 W Pin 20 R20703 R20704 W V U DC_P1 DC_N1 SiUS041501E Trial Operation and Field Settings 102 Part 7 Trial Operation and Field Settings 1 Tips for Servicing 103 1 1 Pump Down Operation 103 1 2 Forced Cooling Operation 103 2 Trial Operation
91. erter Features The inverter provides the following features The regulating capacity can be changed according to the changes in the outdoor temperature and cooling heating load Quick heating and quick cooling The rotation speed of the compressor is increased when starting the heating or cooling This enables to reach the set temperature quickly Even during extreme cold weather high capacity is achieved It is maintained even when the outdoor temperature is 2 C 35 6 F Comfortable air conditioning A fine adjustment is integrated to keep the room temperature constant Energy saving heating and cooling Once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power Frequency Limits The following functions regulate the minimum and maximum frequency Forced Cooling Operation Refer to page 103 for detail Refrigerant circulation rate high high f low f freq variable Refrigerant circulation rate low high speed low speed R2812 Amount of heat exchanged air large freq constant 50 Hz 60 Hz capacity variable Amount of heat exchanged air small AC power DC power Amount of heat exchanged air large Amount of heat exchanged air small Frequency Functions Low Four way valve operation compensation Refer to page 38 High Compressor protection function Refer to page 38 Discharge pipe temperature control Refer to page 39
92. f accumulated time have passed since the start of the operation or ending the previous defrosting Conditions for Canceling Defrost The judgment is made with the outdoor heat exchanger temperature B C 09 class 12 class 18 class RXN24NMVJU RX24NMVJU A minute 20 25 20 25 25 25 B C 2 20 2 20 6 30 6 30 F 35 6 68 0 35 6 68 0 42 8 86 0 42 8 86 0 C Hz 64 64 48 48 D Hz 64 64 42 42 E seconds 40 40 60 60 F seconds 60 60 60 60 G seconds 630 630 490 490 H seconds 40 50 60 90 J seconds 8 8 5 5 K pulse 400 400 450 450 L pulse 300 300 300 450 300 450 M pulse 200 350 200 200 Frequency Compressor Four way valve Fan ON OFF ON OFF ON OFF 0 Hz 0 Hz C Hz D Hz J sec PI control 8 sec H sec R21661 E sec F sec G sec L pulse zone Electronic expansion valve opening Normal control K pulse zone M pulse zone Starting control SiUS041501E Control Specification Function and Control 44 3 11 Electronic Expansion Valve Control Outline The following items are included in the electronic expansion valve control Electronic expansion valve is fully closed 1 Electronic expansion valve is fully closed when turning on the power 2 Pressure equalizing control Open Control 1 Electronic expansion valve control when starting operation 2 Electronic expansion val
93. formance Check Check No 13 5 6 Inverter Unit Refrigerant System Check Check No 14 R21674 NO YES YES NO Turn the power off and then on again Disconnect the four way valve coil from the connector and check the continuity Start heating operation Four way valve coil Cooling Dry Defrost Not energized Heating energized Replace the outdoor unit PCB main PCB Replace the four way valve coil Replace the four way valve Four way valve coil resistance at 1000 2000 S80 voltage at 208 230 VAC with compressor on Fig 1 R14674 Fig 1 Compressor ON Voltage at S80 208 230 VAC Time Refrigerant system check Check for refrigerant leakage See the service diagnosis on refrigerant shortage U0 R15833 YES NO Reconnect the thermistor Replace the refrigerant Is the discharge pipe thermistor disconnected from the holder Check SiUS041501E 95 Service Diagnosis 5 7 Inverter Analyzer Check Check No 15 Characteristics Inverter analyzer RSUK0917C If an abnormal stop occurs due to compressor startup failure or overcurrent output when using an inverter unit it is difficult to judge whether the stop is caused by the compressor failure or some other failure main PCB power module etc The inverter analyzer makes it possible to judge the cause of trouble easily and securely Connect an inverter analyzer as a quasi compressor ins
94. ged if the discharge pipe temperature is lower than the heat exchanger temperature Supposed Causes Disconnection of the connector for the thermistor Thermistor corresponding to the error code is defective Defective heat exchanger thermistor in the case of J3 error outdoor heat exchanger thermistor in cooling operation or indoor heat exchanger thermistor in heating operation Defective outdoor unit PCB Troubleshooting In case of P4 Replace the outdoor unit PCB main PCB P4 Radiation fin thermistor Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged SiUS041501E Troubleshooting Service Diagnosis 86 Troubleshooting In case of H9 J3 J6 Check No 01 Refer to P 91 H9 Outdoor temperature thermistor J3 Discharge pipe thermistor J6 Outdoor heat exchanger thermistor R20406 Caution NO YES YES NO NO YES Turn on the power again Normal Reconnect the connectors or thermistors J3 error the discharge pipe temperature is lower than the heat exchanger temperature Replace the defective thermistor s of the following thermistors Outdoor temperature thermistor Discharge pipe thermistor Outdoor heat exchanger thermistor Cooling Outdoor heat exchanger temperature Heating Indoor heat exchanger temperature Replace the indoor heat exchanger thermistor Replace the outdoor unit PCB main PCB
95. ging Start up 37 3 4 Discharge Pipe Temperature Control 39 3 5 Input Current Control 40 3 6 Freeze up Protection Control 41 3 7 Heating Peak cut Control 41 3 8 Outdoor Fan Control 42 3 9 Liquid Compression Protection Function 42 SiUS041501E iii Table of Contents 3 10 Defrost Control 43 3 11 Electronic Expansion Valve Control 44 3 12 Malfunctions 47 Part 5 Remote Controller 48 1 Cooling Only 49 2 Heat Pump 51 Part 6 Service Diagnosis
96. ging the power cable plug Plugging or unplugging the power cable plug to operate the equipment may cause an electrical shock or fire Be sure to wear a safety helmet gloves and a safety belt when working at a high place more than 2 m Insufficient safety measures may cause a fall accident In case of R 32 R 410A refrigerant models be sure to use pipes flare nuts and tools for the exclusive use of the R 32 R 410A refrigerant The use of materials for R 22 refrigerant models may cause a serious accident such as a damage of refrigerant cycle as well as an equipment failure Do not mix air or gas other than the specified refrigerant R 32 R 410A R 22 in the refrigerant system If air enters the refrigerating system an excessively high pressure results causing equipment damage and injury Warning Caution Do not repair the electrical components with wet hands Working on the equipment with wet hands may cause an electrical shock Do not clean the air conditioner by splashing water Washing the unit with water may cause an electrical shock Be sure to provide the earth grounding when repairing the equipment in a humid or wet place to avoid electrical shocks Be sure to turn off the power switch and unplug the power cable when cleaning the equipment The internal fan rotates at a high speed and may cause injury Be sure to conduct repair work with appropriate tools The use of inappropriate tools may cause injury
97. h the following conditions are met 1 The outdoor unit is not abnormal and not in the 3 minute standby mode 2 The outdoor unit is not operating Start Press the forced cooling operation ON OFF button SW1 on the indoor unit for 5 seconds Command frequency 09 12 class RKN18NMVJU 58 Hz RXN18NMVJU RK X 18NMVJU 24 class 30 Hz End The forced cooling operation ends when any of the following conditions is fulfilled 1 The operation ends automatically after 15 minutes 2 Press the forced cooling operation ON OFF button SW1 on the indoor unit again 3 Press the ON OFF button on the remote controller Others Protection functions have priority over all other functions during forced cooling operation R21069 ON OFF ON OFF button SW1 SiUS041501E Trial Operation Trial Operation and Field Settings 104 2 Trial Operation Outline Carry out the trial operation in accordance with the operation manual to ensure that all functions and parts such as flap movement are working properly Trial operation should be carried out in either cooling or heating operation Detail 1 Measure the power supply voltage and make sure that it falls within the specified range 2 In cooling operation select the lowest programmable temperature 18 C 64 F in heating operation select the highest programmable temperature 30 C 86 F Trial operation may be disabled in either operation mode depending on the room temperature After
98. here corrosive gases such as acid gas or alkaline gas are produced 2 If the outdoor unit is to be installed close to the sea shore direct exposure to the sea breeze should be avoided If you need to install the outdoor unit close to the sea shore contact your local distributor Dealer Specifications designs and other content appearing in this brochure are current as of March 2015 but subject to change without notice SiUS041501E Printed in U S A 03 2015 B AK All rights reserved c
99. in prohibited frequency such as a power supply frequency Initial Frequency When starting the compressor the frequency is initialized according to the D value of the indoor unit lt D signal Indoor frequency command gt The difference between the room thermistor temperature and the target temperature is recognized as the D signal and is used for frequency command OFF Thermostat OFF PI Control 1 P control The D value is calculated in each sampling time 20 seconds and the frequency is adjusted according to its difference from the frequency previously calculated 2 I control If the operating frequency does not change for more than a certain fixed time the frequency is adjusted according to the D value When the D value is low the frequency is lowered When the D value is high the frequency is increased 3 Frequency control when other controls are functioning When frequency is dropping Frequency control is carried out only when the frequency drops For limiting lower limit Frequency control is carried out only when the frequency rises 4 Upper and lower limit of frequency by PI control The frequency upper and lower limits are set according to the command of the indoor unit When the indoor or outdoor unit quiet operation command comes from the indoor unit the upper limit frequency is lower than the usual setting Temperature difference D signal Temperature difference D signal Temper
100. ine prohibited frequency There is a certain prohibited frequency such as a power supply frequency For Heat Pump Model 1 Determine command frequency Command frequency is determined in the following order of priority 1 Limiting defrost control time 2 Forced cooling 3 Indoor frequency command Command frequency Limit frequency Skip control Lower limit function Four way valve operation compensation etc Initial frequency PI control Defrost control Dropping function Input current control etc Upper limit function Compressor protection function Upper limit frequency FMAX Lower limit frequency FMIN Target frequency R17857 When the shift of the frequency is less than zero F lt 0 by PI control the target frequency is used as the command frequency only for heat pump models SiUS041501E Control Specification Function and Control 36 2 Determine upper limit frequency The minimum value is set as an upper limit frequency among the frequency upper limits of the following functions Compressor protection input current discharge pipe temperature heating peak cut freeze up protection defrost control 3 Determine lower limit frequency The maximum value is set as an lower limit frequency among the frequency lower limits of the following functions Four way valve operation compensation draft prevention pressure difference upkeep 4 Determine prohibited frequency There is a certa
101. ipe thermistor Outdoor heat exchanger thermistor Outdoor temperature thermistor Refrigerant shortage Four way valve Water mixed Stop valve Check No 12 Check the electronic expansion valve Replace the defective thermistor s Replace the electronic expansion valve or the coil Refer to the refrigerant line check procedure Replace the outdoor unit PCB main PCB Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Check No 01 Check the thermistors Check No 14 Check the refrigerant line SiUS041501E Troubleshooting Service Diagnosis 80 4 16 High Pressure Control in Cooling Error Code F6 Method of Error Detection High pressure control operation halt frequency drop etc is activated in cooling operation if the temperature sensed by the outdoor heat exchanger thermistor exceeds the limit Error Decision Conditions The temperature sensed by the outdoor heat exchanger thermistor rise above 59 62 C 138 2 143 6 F depending on the model The error is cleared when the temperature drops below 51 53 C 123 8 127 4 F depending on the model Supposed Causes The installation space is not large enough Dirty outdoor heat exchanger Defective outdoor fan motor Defective stop valve Defective electronic expansion valve or coil Defective outdoor heat exchanger thermistor Defective outdoor unit PCB Troublesho
102. irflow Rate H m min cfm 20 2 713 21 1 745 20 2 713 21 1 745 M 16 4 579 17 1 604 16 4 579 17 1 604 L 12 7 448 13 3 470 14 5 512 13 3 470 SL 11 4 403 11 9 420 11 4 403 11 9 420 Fan Type Cross Flow Fan Cross Flow Fan Motor Output W 46 46 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Direction Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 43 0 39 0 43 0 39 0 43 0 39 0 43 0 39 Power Consumption Rated W 58 58 58 58 58 58 58 58 Power Factor Rated 64 8 64 7 64 8 64 7 64 8 64 7 64 8 64 7 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D in mm 11 5 8 39 10 3 8 295 990 263 11 5 8 39 10 3 8 295 990 263 Packaged Dimensions H W D in mm 14 9 16 42 1 2 15 3 8 370 1 080 390 14 9 16 42 1 2 15 3 8 370 1 080 390 Weight Lbs kg 27 12 27 12 Gross Weight Lbs kg 37 17 37 17 Sound Pressure Level H M L SL dB A 49 44 38 33 49 42 37 33 53 45 39 34 53 43 37 34 Outdoor Unit RX18NMVJU RX24NMVJU Casing Color Ivory White Ivory White Compressor Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Model 2YC36PXD 2YC36PXD Motor Outp
103. lectrical shocks Do not install the equipment in a place where there is a possibility of combustible gas leaks If the combustible gas leaks and remains around the unit it may cause a fire Check to see if the parts and wires are mounted and connected properly and if the connections at the soldered or crimped terminals are secure Improper installation and connections may cause excessive heat generation fire or an electrical shock If the installation platform or frame has corroded replace it Corroded installation platform or frame may cause the unit to fall resulting in injury Check the earth grounding and repair it if the equipment is not properly earthed grounded Improper earth grounding may cause an electrical shock Be sure to measure the insulation resistance after the repair and make sure that the resistance is 1 M or higher Faulty insulation may cause an electrical shock Be sure to check the drainage of the indoor unit after the repair Faulty drainage may cause the water to enter the room and wet the furniture and floor Do not tilt the unit when removing it The water inside the unit may spill and wet the furniture and floor Be sure to install the packing and seal on the installation frame properly If the packing and seal are not installed properly water may enter the room and wet the furniture and floor For unitary type only SiUS041501E Used Icons x 2 Used Icons The following icons
104. lity 85 J6 Outdoor heat exchanger thermistor or related abnormality 85 L3 Electrical box temperature rise 87 L4 Radiation fin temperature rise 88 L5 Output overcurrent detection 89 P4 Radiation fin thermistor or related abnormality 85 Troubleshooting SiUS041501E 61 Service Diagnosis 4 2 Indoor Unit PCB Abnormality Error Code A1 Method of Error Detection The system checks if the circuit works properly within the microcomputer of the indoor unit Error Decision Conditions The system cannot set the internal settings Supposed Causes Wrong models interconnected Defective indoor unit PCB Disconnection of connector Reduction of power supply voltage Troubleshooting Note Check the following connector Check the connection of connectors See Note Correct the connection OK Check the power supply voltage Start operation Voltage as rated Error repeats Check the power supply voltage Start operation Voltage as rated Error repeats Error repeats Combination of the indoor and outdoor unit matched YES NO NO YES NO NO YES R20486 Caution To secure the connection once disconnect the connector and then reconnect it YES NO YES NO YES NO YES Match the compatible models Correct the power supply Replace the indoor unit PCB control PCB Completed Completed Correct the power supply Replace the indoo
105. low 50 V Supposed Causes Broken or disconnected harness Defective outdoor unit PCB Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged NO R21670 YES Turn off the power Then turn on the power to restart the system YES NO Replace the harness Replace the outdoor unit PCB main PCB Is the harness broken Restart operation and error displayed again Check the harness for the compressor No problem Keep on running Troubleshooting SiUS041501E 83 Service Diagnosis 4 18 Position Sensor Abnormality Error Code H6 Method of Error Detection A compressor start up failure is detected by checking the compressor running condition through the position detection circuit Error Decision Conditions If the error repeats the system is shut down Reset condition Continuous run for about 11 minutes without any other error Supposed Causes Power supply voltage is not as specified Disconnection of the compressor harness Defective compressor Defective outdoor unit PCB Start up failure caused by the closed stop valve Input voltage is outside the specified range SiUS041501E Troubleshooting Service Diagnosis 84 Troubleshooting Check No 15 Refer to P 95 Check No 18 Refer to P 98 Check No 20 Refer to P 99 Caution Be sure to turn off the power switch before connecting or disconnecting connectors
106. low Fan Cross Flow Fan Motor Output W 18 22 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Direction Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 23 0 21 0 27 0 24 Power Consumption Rated W 25 25 29 29 Power Factor Rated 52 3 51 8 51 6 52 5 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D in mm 11 1 4 30 5 16 8 3 4 285 770 223 11 1 4 30 5 16 8 3 4 285 770 223 Packaged Dimensions H W D in mm 12 32 11 16 14 3 16 305 831 360 12 32 11 16 14 3 16 305 831 360 Weight Lbs kg 18 8 18 8 Gross Weight Lbs kg 24 11 24 11 Sound Pressure Level H M L SL dB A 43 35 27 19 44 36 30 19 Sound Power Level dB Outdoor Unit RKN09NMVJU RKN12NMVJU Casing Color Ivory White Ivory White Compressor Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Model 1YC23AUXD 1YC23AUXD Motor Output W 790 790 Refrigerant Oil Type FVC50K FVC50K Charge oz L 12 4 0 375 12 4 0 375 Refrigerant Type R 410A R 410A Charge Lbs kg 1 54 0 70 2 09 0 95 Airflow Rate H m min cfm 35 2 1 243 35 0 1 236 SL Fan Type Propeller Propeller Motor Output W 20 26 Running Curre
107. mensions H W D in mm 21 5 8 26 9 16 11 3 16 550 675 284 21 5 8 26 9 16 11 3 16 550 675 284 Packaged Dimensions H W D in mm 24 3 4 32 11 16 16 629 830 407 24 3 4 32 11 16 16 629 830 407 Weight Lbs kg 55 25 60 27 Gross Weight Lbs kg 66 30 71 32 Sound Pressure Level H dB A 49 49 52 52 Drawing No 3D093120 3D093122 Conversion Formulae kcal h kW 860 Btu h kW 3412 cfm m min 35 3 Cooling Indoor 80 FDB 26 7 CDB 67 FWB 19 4 CWB Outdoor 95 FDB 35 CDB 75 FWB 24 CWB Heating Indoor 70 FDB 21 CDB 60 FWB 15 6 CWB Outdoor 47 FDB 8 3 CDB 43 FWB 6 CWB Piping Length 25 ft 7 5 m SiUS041501E Specifications Specifications 12 60 Hz 208 230V Note The data are based on the conditions shown in the table below Model Indoor Unit FTXN18NMVJU FTXN24NMVJU Outdoor Unit RXN18NMVJU RXN24NMVJU Cooling Heating Cooling Heating Capacity Rated Min Max kW 5 02 1 50 5 28 5 28 1 50 5 60 6 45 1 50 6 74 6 45 1 50 7 44 Btu h 17 100 5 100 18 000 18 000 5 100 19 100 22 000 5 100 23 000 22 000 5 100 25 400 kcal h 4 320 1 290 4 540 4 540 1 290 4 820 5 550 1 290 5 800 5 550 1 290 6 400 Moisture Removal gal h 1 00 1 20 Running Current Rated A 7 05 6 37 6 92 6 26 11 79 10 66 8 82 7 97
108. mpatible models OK Correct the connection Check the code numbers 2P012345 for example of the indoor and outdoor unit PCB with the Parts List If not matched change for the correct PCB Are the connecting wires connected property Check the combination of the indoor and outdoor unit Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Troubleshooting SiUS041501E 71 Service Diagnosis 4 9 Outdoor Unit PCB Abnormality Error Code E1 Method of Error Detection The system checks if the microprocessor is working in order The system checks if the zero cross signal comes in properly Error Decision Conditions The microprocessor program runs out of control The zero cross signal is not detected Supposed Causes Defective outdoor unit PCB Noise Momentary drop of voltage Momentary power failure Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Continuously ON or OFF Blink YES R21201 NO Replace the outdoor unit PCB main PCB Ground the system Zero cross signal abnormality Replace the outdoor unit PCB main PCB Check if the outdoor unit is grounded Is LED A blinking Grounded Turn on the power again Before you check the LED A cancel the standby electricity saving function by starting fan operation with the remote co
109. n the OFF TIMER is set NIGHT SET Mode is automatically activated NIGHT SET Mode keeps the airflow rate setting Detail NIGHT SET Mode continues operation at the target temperature for the first one hour then automatically raises the target temperature slightly in the case of cooling or lowers it slightly in the case of heating This prevents excessive cooling in summer and excessive heating in winter to ensure comfortable sleeping conditions and also conserves electricity lt Cooling gt lt Heating gt 1 9 ECONO Operation Outline ECONO operation reduces the maximum power consumption This operation is particularly convenient for energy saving It is also a major bonus when breaker capacity does not allow the use of multiple electrical devices and air conditioners It can be easily activated by pushing the ECONO button on the wireless remote controller Detail When this function is activated the maximum capacity also decreases The remote controller can send the ECONO command when the unit is in cooling heating dry or automatic operation This function can only be set when the unit is running Press the ON OFF button on the remote controller to cancel the function This function and POWERFUL operation cannot be used at the same time The latest command has the priority R21657 TIMER operation NIGHT SET Mode ON Target temperature 0 5 C 0 9 F temperature shift Operation stops at the set hours 0 5 C 0 9
110. nals between the unit and the remote controller such as a curtain the unit may not operate The maximum transmission distance is about 23 ft 7 m Receiver OFF button Press this button to stop the operation Direct operation buttons Starts the COOL DRY or FAN ONLY operation SiUS041501E Cooling Only Remote Controller 50 Reference Refer to the following pages for detail Note Refer to the operation manual of applicable model for detail You can download operation manual from Daikin Business Portal Daikin Business Portal Product Information Operation Installation Manual URL https global1d daikin com business_portal login R21663 TEMPERATURE adjustment button Changes the temperature setting DRY COOL FAN Not available 64 90 F 18 32 C Not available ECONO3 button Starts ECONO operation POWERFUL2 button Starts POWERFUL operation COMFORT1 button Starts COMFORT AIRFLOW operation ON TIMER button Adjusts the ON TIMER setting The timer can be set 1 12 hours In indoor unit quiet operation operation sound becomes weak The airflow rate also decreases In DRY operation the airflow rate setting is not available FAN setting button Selects the airflow rate setting every time you press this button AUTO Indoor unit quiet Airflow rate 1 5 Low to High SWING4 button Adjusts the airflow direction
111. nt Rated A 4 18 3 78 5 47 4 95 Power Consumption Rated W 844 844 1 113 1 113 Power Factor Rated 97 1 97 1 97 8 97 8 Starting Current A 4 41 5 74 Dimensions H W D in mm 21 5 8 26 9 16 11 3 16 550 675 284 21 5 8 26 9 16 11 3 16 550 675 284 Packaged Dimensions H W D in mm 24 3 4 32 11 16 16 629 830 407 24 3 4 32 11 16 16 629 830 407 Weight Lbs kg 55 25 60 27 Gross Weight Lbs kg 66 30 71 32 Sound Pressure Level H dB A 49 52 Drawing No 3D093121A 3D093123A Conversion Formulae kcal h kW 860 Btu h kW 3412 cfm m min 35 3 Cooling Indoor 80 FDB 26 7 CDB 67 FWB 19 4 CWB Outdoor 95 FDB 35 CDB 75 FWB 24 CWB Piping Length 25 ft 7 5 m SiUS041501E Specifications Specifications 8 60 Hz 208 230 V Note The data are based on the conditions shown in the table below Model Indoor Unit FTKN18NMVJU FTKN24NMVJU Outdoor Unit RKN18NMVJU RKN24NMVJU Capacity Rated Min Max kW 5 02 1 30 5 28 6 45 1 50 6 74 Btu h 17 100 4 400 18 000 22 000 5 100 23 000 kcal h 4 320 1 120 4 540 5 550 1 290 5 800 Moisture Removal gal h 1 0 1 2 Running Current Rated A 7 63 6 90 11 79 10 66 Power Consumption Rated Min Max W 1 550 240 1 680 2 403 295 2 550 Power Factor Rated 97 7 97 7 98 0 98 0 COP Rated
112. ntinuity of the four way valve coil and harness Replace the four way valve coil NO Resistance between harnesses about 1000 2000 Disconnect the harness from the connector Troubleshooting SiUS041501E 79 Service Diagnosis 4 15 Discharge Pipe Temperature Control Error Code F3 Method of Error Detection An error is determined with the temperature detected by the discharge pipe thermistor Error Decision Conditions If the temperature detected by the discharge pipe thermistor rises above A the compressor stops The error is cleared when the discharge pipe temperature has dropped below B 09 12 class RKN18NMVJU If the frequency drops the temperature is lowered in compensation RXN18NMVJU RK X 18NMVJU 24 class If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Defective discharge pipe thermistor Defective outdoor heat exchanger thermistor or outdoor temperature thermistor Defective electronic expansion valve or coil Refrigerant shortage Defective four way valve Water mixed in refrigerant Defective stop valve Defective outdoor unit PCB Troubleshooting Check No 01 Refer to P 91 Check No 12 Refer to P 93 Check No 14 Refer to P 94 A B C F C F 110 230 88 190 4 A B C F C F 110 230 95 203 R20417 Caution NG OK OK OK NG NG Discharge p
113. ntrol is activated The electronic expansion valve opens and the pressure is equalized 3 11 3 Opening Limit Control The maximum and minimum opening of the electronic expansion valve are limited The electronic expansion valve is fully closed when cooling operation stops and is opened at a fixed degree during defrosting 3 11 4 Starting Operation Control The electronic expansion valve opening is controlled when the operation starts thus prevents the superheating or liquid compression 3 11 5 Control when the frequency changes When the target discharge pipe temperature control is active if the target frequency changes to a specified value in a certain time period the target discharge pipe temperature control is canceled and the target opening of the electronic expansion valve is changed according to the frequency shift 3 11 6 High Discharge Pipe Temperature Control When the compressor is operating if the discharge pipe temperature exceeds a certain value the electronic expansion valve opens and the refrigerant runs to the low pressure side This procedure lowers the discharge pipe temperature 3 11 7 Discharge Pipe Thermistor Disconnection Control Outline The disconnection of the discharge pipe thermistor is detected by comparing the discharge pipe temperature with the condensation temperature If the discharge pipe thermistor is disconnected the electronic expansion valve opens according to the outdoor temperature and the operation
114. ntroller Wait at least for 7 sec after turning on the power SiUS041501E Troubleshooting Service Diagnosis 72 4 10 OL Activation Compressor Overload Error Code E5 Method of Error Detection A compressor overload is detected through compressor OL Error Decision Conditions If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Disconnection of discharge pipe thermistor Defective discharge pipe thermistor Disconnection of connector S40 Disconnection of 2 terminals of OL Q1L Defective OL Q1L Broken OL harness Defective electronic expansion valve or coil Defective four way valve or coil Defective outdoor unit PCB Refrigerant shortage Water mixed in refrigerant Defective stop valve Troubleshooting SiUS041501E 73 Service Diagnosis Troubleshooting Check No 01 Refer to P 91 Check No 12 Refer to P 93 Check No 13 Refer to P 94 Check No 14 Refer to P 94 Note OL Q1L activating temperature 130 C 266 F OL Q1L recovery temperature 95 C 203 F R20415 Caution YES NG Discharge pipe thermistor NO OK OK NG NG OK YES NO NG OK Refrigerant shortage Water mixed Stop valve Disconnect the connector S40 from the PCB Disconnect the 2 terminals of the OL Q1L Resistance Resistance Nearly 0 Nearly 0 Connector S
115. of 20 minutes 2 Operation OFF 3 POWERFUL operation is OFF SiUS041501E Main Functions Function and Control 32 1 11 Other Functions 1 11 1 Hot Start Function In order to prevent the cold air blast that normally occurs when heating operation starts the temperature of the indoor heat exchanger is detected and the airflow is either stopped or significantly weakened resulting in comfortable heating Note The cold air blast is prevented using similar control when defrost control starts or when the thermostat is turned ON 1 11 2 Signal Receiving Sign When the indoor unit receives a signal from the remote controller the unit emits a signal receiving sound 1 11 3 Indoor Unit ON OFF Button An ON OFF button is provided on the display of the unit Press the ON OFF button once to start operation Press once again to stop it The ON OFF button is useful when the remote controller is missing or the battery has run out lt Forced cooling operation gt Forced cooling operation can be started by pressing the ON OFF button for 5 to 9 seconds while the unit is not operating Refer to page 103 for detail Note When the ON OFF button is pressed for 10 seconds or more the forced cooling operation is stopped 1 11 4 Auto restart Function If a power failure including one for just a moment occurs during the operation the operation restarts automatically when the power is restored in the same condition as before the power failure Note
116. ol during POWERFUL operation The rotation speed of the outdoor fan is increased during POWERFUL operation 7 Fan speed control during indoor outdoor unit quiet operation The rotation speed of the outdoor fan is reduced by the command of the indoor outdoor unit quiet operation 8 Fan ON OFF control when operation cooling heating dry starts stops The outdoor fan is turned ON when the operation starts The outdoor fan is turned OFF when the operation stops 3 9 Liquid Compression Protection Function Outline In order to obtain the dependability of the compressor the compressor is stopped according to the outdoor temperature and temperature of the outdoor heat exchanger Detail Operation stops depending on the outdoor temperature Compressor turns off under the conditions that the system is in cooling operation and outdoor temperature is below 0 C 32 F Control Specification SiUS041501E 43 Function and Control 3 10 Defrost Control Outline Defrosting is carried out by the cooling cycle reverse cycle The defrosting time or outdoor heat exchanger temperature must be more than a certain value to finish defrosting Detail Conditions for Starting Defrost The starting conditions are determined with the outdoor temperature and the outdoor heat exchanger temperature The system is in heating operation The compressor operates for 6 minutes More than A minutes depending on the duration of the previous defrost control o
117. omatically after 3 minute standby Over voltage detection An over voltage signal is fed from the over voltage detection circuit to the microcomputer over 458 500 V depending on the model The compressor stops if the error occurs and restarts automatically after 3 minute standby Supposed Causes Power supply voltage is not as specified Defective DC voltage detection circuit Defective over voltage detection circuit Defective PAM control part Disconnection of compressor harness Short circuit inside the fan motor winding Noise Momentary drop of voltage Momentary power failure Defective outdoor unit PCB Troubleshooting SiUS041501E 67 Service Diagnosis Troubleshooting Correct the power supply Replace the outdoor unit PCB main PCB Check for such factors for a long term R21191 Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged NO NO YES YES YES YES Reconnect the harness Check the power supply voltage Check the connection of the compressor harness Disturbance factors Noise Power supply distortion Precaution before turning on the power again Make sure the power has been off for at least 30 seconds Turn on the power System restarted Repeat a few times Loose or disconnected NO NO Replace the outdoor fan motor and the outdoor unit PCB main PCB Does the outdoor fan rotate smoothl
118. oom thermistor temperature target temperature Main Functions SiUS041501E 27 Function and Control 1 5 Program Dry Operation Outline Program dry operation removes humidity while preventing the room temperature from lowering Since the microcomputer controls both the temperature and airflow rate the temperature adjustment and FAN setting buttons are inoperable Detail The microcomputer automatically sets the temperature and airflow rate The difference between the room thermistor temperature at start up and the target temperature is divided into two zones Then the unit operates in an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Thermostat turns on also when the room temperature is in the zone B for 10 min Room thermistor temperature at start up Target temperature X Thermostat OFF point Y Thermostat ON point Z 24 C or more 75 2 F or more Room thermistor temperature at start up X 2 5 C X 4 5 F X 0 5 C X 0 9 F 18 23 5 C 64 4 74 3 F X 2 0 C X 3 6 F X 0 5 C X 0 9 F 17 5 C or less 63 5 F or less 18 C 64 4 F X 2 0 C X 3 6 F X 0 5 C 17 5 C X 0 9 F 63 5 F Z X Y Zone B Zone B Zone A Thermostat OFF Zone C Thermostat ON 0 5 C 0 9 F R11587 SiUS041501E Main Functions Function and Control 28 1 6 Automatic Operation Outline Automatic Cooling H
119. or Wiring Diagram 20 2 Outdoor Unit 2 1 09 12 Class RKN18NMVJU Main PCB Caution Replace the PCB if you accidentally cut a wrong jumper Jumpers are necessary for electronic circuit Improper operation may occur if you cut any of them 1 S20 Connector for electronic expansion valve coil 2 S30 Connector for compressor 3 S40 Connector for overload protector 4 S71 Connector for DC fan motor 5 S80 Connector for four way valve coil heat pump model only 6 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 7 HL1 HN1 S Connector for terminal board 8 E1 E2 Terminal for ground wire 9 HR1 HR2 Connector for reactor 10 FU1 FU2 Fuse 3 15 A 250 V 11 FU3 Fuse 20 A 250 V 12 J6 Jumper for facility setting RK X N models only Refer to page 107 for detail 12 LED A LED for service monitor green 13 V2 V3 V150 Varistor E1 E2 FU3 V150 V2 V3 FU1 FU2 HR1 HR2 S20 LED A S90 S30 J6 S40 2P353825 7 2P353825 8 HL1 HN1 S S80 S71 Outdoor Unit SiUS041501E 21 Printed Circuit Board Connector Wiring Diagram 2 2 RXN18NMVJU RK X 18NMVJU 24 class Main PCB Caution Replace the PCB if you accidentally cut a wrong jumper Jumpers are necessary for electronic circuit Improper operation may occur if you cut any of them 1 S20 Connector for electronic expansion valve coil 2 S40 Connector for overload protector 3 S70 Conn
120. or parts may be damaged NO YES Turn off the power Check the connection Check the power supply voltage Correct the power supply Voltage as rated R21864 NO NO NO NO YES YES YES YES Check No 20 Check the short circuit of the diode bridge Check No 15 Check with the inverter analyzer Turn off the power Disconnect the harnesses U V and W Turn on the power Check the electrolytic capacitor voltage Electrical components or compressor harnesses connected as specified Replace the outdoor unit PCB main PCB Correct the power supply or replace the outdoor unit PCB main PCB Replace the compressor Reconnect the electrical components or compressor harnesses as specified Replace the outdoor unit PCB main PCB Inverter analyzer RSUK0917C Normal NO YES Check No 18 Check the discharge pressure Replace the stop valve OK 320 VDC Any LED OFF 100 50 Troubleshooting SiUS041501E 85 Service Diagnosis 4 19 Thermistor or Related Abnormality Outdoor Unit Error Code H9 J3 J6 P4 Method of Error Detection This fault is identified based on the thermistor input voltage to the microcomputer A thermistor fault is identified based on the temperature sensed by each thermistor Error Decision Conditions The voltage between the both ends of the thermistor is above 4 96 V or below 0 04 V with the power on J3 error is jud
121. oting SiUS041501E 81 Service Diagnosis Troubleshooting Check No 01 Refer to P 91 Check No 12 Refer to P 93 Check No 17 Refer to P 98 Check No 18 Refer to P 98 Check No 19 Refer to P 99 R20418 Caution Replace the outdoor fan motor Reconnect the connector or fan motor lead wires Replace the stop valve Replace the outdoor heat exchanger thermistor Replace the outdoor unit PCB main PCB Replace the electronic expansion valve or the coil Replace the outdoor unit PCB main PCB Change the installation location or direction Clean the outdoor heat exchanger Check the installation space NG OK OK NG NG OK OK OK NG NG Check No 19 Check the outdoor fan Check No 18 Check the discharge pressure Check No 12 Check the electronic expansion valve Check No 01 Check the outdoor heat exchanger thermistor Check No 17 Check the installation condition Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged SiUS041501E Troubleshooting Service Diagnosis 82 4 17 Compressor System Sensor Abnormality Error Code H0 Method of Error Detection The system checks the DC current before the compressor starts Error Decision Conditions The voltage converted from the DC current before compressor start up is out of the range 0 5 4 5 V The DC voltage before compressor start up is be
122. outdoor unit Is LED A blinking Properly insulated Is there any disturbance Is there any wiring error Check the indoor unit outdoor unit connection wires Check the LED A on the outdoor unit PCB Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Before you check the LED A cancel the standby electricity saving function by starting fan operation with the remote controller Wait at least for 7 sec after turning on the power NO YES Check the power supply voltage Correct the power supply YES NO Replace the outdoor fan motor and the outdoor unit PCB main PCB Rotate the outdoor fan by hand Does the outdoor fan rotate smoothly Is the voltage fluctuation within 10 from the rated value SiUS041501E Troubleshooting Service Diagnosis 70 4 8 Unspecified Voltage Between Indoor Unit and Outdoor Unit Error Code UA Method of Error Detection The supply power is detected for its requirements pair type is different from multi type by the indoor outdoor transmission signal Error Decision Conditions The pair type and multi type are interconnected Supposed Causes Wrong models interconnected Wrong wiring of connecting wires Wrong indoor unit PCB or outdoor unit PCB mounted Defective indoor unit PCB Defective outdoor unit PCB Troubleshooting R20435 Caution NO YES YES NO Match the co
123. overload Short circuit Check the installation condition Check with the inverter analyzer Check the power module Not a malfunction Keep observing Check the connectors and other components Fully open the stop valve Correct the power supply Replace the compressor Correct the power supply or replace the outdoor unit PCB main PCB Replace the outdoor unit PCB main PCB Error again Stop valve fully open Voltage as rated Any LED off Normal Inverter analyzer RSUK0917C Short circuit or wire breakage between compressor s coil phases Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Check the discharge pressure Go to Check No 18 Check SiUS041501E 91 Service Diagnosis 5 Check 5 1 Thermistor Resistance Check Check No 01 Disconnect the connectors of the thermistors from the PCB and measure the resistance of each thermistor using multimeter When the room temperature thermistor is soldered on a PCB remove the PCB from the control PCB to measure the resistance When the connector of indoor heat exchanger thermistor is soldered on a PCB remove the thermistor and measure the resistance Thermistor temperature Resistance k C F Room temperature thermistor Other thermistors 20 4 73 4 197 8 15 5 57 0 148 2 10 14 44 7 112 1 5 23 35 3 85 60 0 32 28 2 65 93 5
124. p RXN09NMVJU RX09NMVJU RXN12NMVJU RX12NMVJU OUTDOOR UNIT HEAT EXCHANGER 9 32 CuT 9 32 CuT 1 4 CuT 1 4 CuT 9 32 CuT M PROPELLER FAN 3 8 CuT 3 8 CuT 3 16 CuT 3 8 CuT 5 16 CuT MUFFLER 3 8 CuT 3 8 CuT REFRIGERANT FLOW 5 16 CuT ACCUMULATOR MUFFLER COOLING HEATING COMPRESSOR 3D092244 FIELD PIPING 1 4 CuT FIELD PIPING 3 8 CuT GAS STOP VALVE WITH SERVICE PORT LIQUID STOP VALVE MUFFLER WITH FILTER MUFFLER WITH FILTER MOTOR OPERATED VALVE HEAT EXCHANGER THERMISTOR FOUR WAY VALVE ON HEATING DISCHARGE PIPE THERMISTOR OUTDOOR TEMPERATURE THERMISTOR OUTDOOR UNIT HEAT EXCHANGER 9 32 CuT 9 32 CuT 3 8 CuT 3 16 CuT 1 4 CuT 1 4 CuT 3 16 CuT M PROPELLER FAN 3 8 CuT 3 8 CuT 3 16 CuT 3 8 CuT 5 16 CuT MUFFLER 3 8 CuT 3 8 CuT REFRIGERANT FLOW 5 16 CuT ACCUMULATOR MUFFLER COOLING HEATING COMPRESSOR OUTDOOR TEMPERATURE THERMISTOR HEAT EXCHANGER THERMISTOR MOTOR OPERATED VALVE MUFFLER WITH FILTER FOUR WAY VALVE ON HEATING LIQUID STOP VALVE GAS STOP VALVE WITH SERVICE PORT FIELD PIPING 1 4 CuT FIELD PIPING 3 8 CuT DISCHARGE PIPE THERMISTOR MUFFLER WITH FILTER 3D092207 SiUS041501E Piping Diagrams Appendix 116 RXN18NMVJU RX18NMVJU RXN24NMVJU OUTDOOR UNIT HEAT EXCHANGER 9 32 CuT 9 32 CuT 9 32 CuT 1 2 CuT 9 32 CuT CAPILLARY TUBE 1 5 32 CuT 1 4 CuT 1 4 CuT CAP
125. pressor 2 If the LEDs are not lit uniformly check the power module Refer to Check No 22 3 If NG in Check No 22 replace the power module Replace the main PCB The power module is united with the main PCB If OK in Check No 22 check if there is any solder cracking on the PCB 4 If any solder cracking is found replace the PCB or repair the soldered section If there is no solder cracking replace the PCB Caution 1 When the output frequency is low the LEDs blink slowly As the output frequency increases the LEDs blink quicker The LEDs look like they are lit 2 On completion of the inverter analyzer diagnosis be sure to re crimp the FASTON terminals Otherwise the terminals may be burned due to loosening HEAT PUMP model COOLING ONLY model OFF button R21675 R15292 Direction of crimp FASTON terminal This size is shortened by the crimp Check SiUS041501E 97 Service Diagnosis 5 8 Rotation Pulse Check on the Outdoor Unit PCB Check No 16 Make sure that the voltage of 320 100 V 320 50 V is applied 1 Set operation off and power off Disconnect the connector S70 or S71 2 Check that the voltage between the pins 4 7 is 320 VDC 3 Check that the control voltage between the pins 3 4 is 15 VDC 4 Check that the rotation command voltage between the pins 2 4 is 0 6 5 VDC 5 Keep operation off and power off Connect the connector S70 or S71 6 Check whether 4 rotation pulses 0
126. r Unit 65 4 6 Low voltage Detection or Over voltage Detection 66 4 7 Signal Transmission Error between Indoor Unit and Outdoor Unit 68 4 8 Unspecified Voltage Between Indoor Unit and Outdoor Unit 70 4 9 Outdoor Unit PCB Abnormality 71 4 10 OL Activation Compressor Overload 72 4 11 Compressor Lock 74 4 12 DC Fan Lock 75 4 13 Input Overcurrent Detection 76 4 14 Four Way Valve Abnormality 77 4 15 Discharge Pipe Temperature Control 79 4 16 High Pressure Control in Cooling 80 4 17 Compressor System Sensor Abnormality 82 4 18 Position Sensor Abnormality 83 4 19 Thermistor or Related Abnormality Outdoor Unit 85 4 20 Electrical Box Temper
127. r unit PCB control PCB Completed Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Model Type Connector 09 12 class Terminal board Control PCB H1 H2 H3 18 24 class Terminal board Filter PCB S100 SiUS041501E Troubleshooting Service Diagnosis 62 4 3 Freeze up Protection Control Heating Peak cut Control Error Code A5 Method of Error Detection Freeze up protection control During cooling operation the freeze up protection control operation halt is activated according to the temperature detected by the indoor heat exchanger thermistor Heating peak cut control During heating operation the temperature detected by the indoor heat exchanger thermistor is used for the heating peak cut control operation halt outdoor fan stop etc Error Decision Conditions Freeze up protection control During cooling operation the indoor heat exchanger temperature is below 0 C 32 F Heating peak cut control During heating operation the indoor heat exchanger temperature is above about 60 C 140 F depending on the model Supposed Causes Short circuited air Clogged air filter of the indoor unit Dust accumulation on the indoor heat exchanger Defective indoor heat exchanger thermistor Defective indoor unit PCB Troubleshooting Check No 01 Refer to P 91 NO NO NO Check No 01 Check the indoor heat exchanger thermistor YES YES R2
128. ration limit for cooling FDB 50 114 8 50 114 8 Titanium apatite photocatalytic air purifying filter option Operation limit for heating CWB 15 18 Air filter prefilter Operation limit for heating FWB 5 64 4 Wipe clean flat panel Washable grille PAM control MOLD PROOF operation Standby electricity saving Good sleep cooling operation Compressor Oval scroll compressor Timer WEEKLY TIMER Swing compressor Count up down ON OFF timer Rotary compressor 24 hour ON OFF TIMER Reluctance DC motor NIGHT SET mode Comfortable Airflow Power airflow flap horizontal blade Worry Free Reliability amp Durability Auto restart after power failure Power airflow dual flaps Self diagnosis R C LED Power airflow diffuser Wiring error check function Wide angle louvers vertical blade Anti corrosion treatment of outdoor heat exchanger Auto swing up and down Auto swing right and left Flexibility Multi split split type compatible indoor unit 3 D airflow COMFORT AIRFLOW operation H P C O compatible indoor unit Comfort Control Auto fan speed Flexible power supply correspondence Indoor unit quiet operation Chargeless 32 8 ft 10 m 32 8 ft 10 m NIGHT QUIET mode automatic OUTDOOR UNIT QUIET operation manual Either
129. ree pin Free pin Phase V Phase W GND Motor control voltage 15 VDC Rotation pulse 5 VDC S200 Check SiUS041501E 93 Service Diagnosis 5 3 Power Supply Waveforms Check Check No 11 Measure the power supply waveform between No 1 and No 2 on the terminal board and check the waveform disturbance Check if the power supply waveform is a sine wave Fig 1 Check if there is waveform disturbance near the zero cross sections circled in Fig 2 5 4 Electronic Expansion Valve Check Check No 12 Conduct the followings to check the electronic expansion valve EV 1 Check if the EV connector is correctly connected to the PCB 2 Turn the power off and on again and check to see if the EV generates a latching sound 3 If the EV does not generate a latching sound in the above step 2 disconnect the connector and check the continuity using a multimeter 4 Check the continuity between the pins 1 6 2 6 3 6 and 4 6 between the pins 1 5 2 5 3 5 4 5 for the 5P connector models If there is no continuity between the pins the EV coil is faulty 5 If the continuity is confirmed in step 3 the outdoor unit PCB main PCB is faulty Fig 1 Fig 2 Harness 5P 6P Connector 5 Check S20 1 6 2 6 3 6 4 6 1 2 3 4 5 6 R16386 Harness 5P 5P Connector Check S20 1 5 2 5 3 5 4 5 1 2 3 4 5 R20506 SiUS041501E Check Service Diagnosis 94 5 5 Four Way Valve Per
130. rge pipe temperature Stop zone Dropping zone Keep zone Up zone Reset zone E A B C D SiUS041501E Control Specification Function and Control 40 3 5 Input Current Control Outline The microcomputer calculates the input current while the compressor is running and sets the frequency upper limit based on the input current In case of heat pump models this control is the upper limit control of frequency and takes priority over the lower limit control of four way valve operation compensation Detail Frequency control in each zone Stop zone After 2 5 seconds in this zone the compressor is stopped Dropping zone The upper limit of the compressor frequency is defined as operation frequency 2 Hz After this the output frequency is pulled down by 2 Hz every second until it reaches the keep zone Keep zone The present maximum frequency goes on Reset zone Limit of the frequency is canceled RK X N series RK X series Limitation of current dropping and stop value according to the outdoor temperature The current drops when outdoor temperature becomes higher than a certain level depending on the model RK X N09NMVJU RK X N12NMVJU Cooling Heating Cooling Heating A A 7 75 10 8 5 10 B A 6 75 8 5 7 5 8 5 C A 5 75 7 5 6 5 7 5 RKN18NMVJU RXN18NMVJU RK X N24NMVJU Cooling Heating Cooling Heating Cooling Heating A A 9 25 13 18 B A 8 5 10 9 12 14 5 C A 7
131. rning Do not store the equipment in a room with successive fire sources e g naked flame gas appliance electric heater Be sure to disconnect the power cable plug from the plug socket before disassembling the equipment for repair Working on the equipment that is connected to the power supply may cause an electrical shock If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits do not touch any electrically charged sections of the equipment If the refrigerant gas is discharged during the repair work do not touch the discharged refrigerant gas The refrigerant gas may cause frostbite When disconnecting the suction or discharge pipe of the compressor at the welded section evacuate the refrigerant gas completely at a well ventilated place first If there is gas remaining inside the compressor the refrigerant gas or refrigerating machine oil discharges when the pipe is disconnected and it may cause injury If the refrigerant gas leaks during the repair work ventilate the area The refrigerant gas may generate toxic gases when it contacts flames Be sure to discharge the capacitor completely before conducting repair work The step up capacitor supplies high voltage electricity to the electrical components of the outdoor unit A charged capacitor may cause an electrical shock SiUS041501E Safety Cautions vi Do not start or stop the air conditioner operation by plugging or unplug
132. rops below B R21671 YES NO YES NG NO OK NO YES Turn off the power and turn it on again Check the radiation fin temperature Radiation fin dirty Check No 19 Check the outdoor fan Error again or outdoor fan activated Replace the outdoor unit PCB main PCB Clean up the radiation fin Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Replace the outdoor fan motor Correct the connectors and fan motor lead wire Replace the outdoor unit PCB main PCB Above A Check the installation condition Go to Check No 17 SiUS041501E Troubleshooting Service Diagnosis 88 4 21 Radiation Fin Temperature Rise Error Code L4 Method of Error Detection A radiation fin temperature rise is detected by checking the radiation fin thermistor with the compressor on Error Decision Conditions If the radiation fin temperature with the compressor on is above A The error is cleared when the radiation fin temperature drops below B If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Defective outdoor fan motor Short circuit Defective radiation fin thermistor Disconnection of connector Defective outdoor unit PCB Silicon grease is not applied properly on the radiation fin after replacing the outdoor unit PCB Troubleshooting Check No 1
133. rrent Rated A 0 43 0 39 0 43 0 39 Power Consumption Rated W 58 58 58 58 Power Factor Rated 64 8 64 7 64 8 64 7 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D in mm 11 5 8 39 10 3 8 295 990 263 11 5 8 39 10 3 8 295 990 263 Packaged Dimensions H W D in mm 14 9 16 42 1 2 15 3 8 370 1 080 390 14 9 16 42 1 2 15 3 8 370 1 080 390 Weight Lbs kg 27 12 27 12 Gross Weight Lbs kg 37 17 37 17 Sound Pressure Level H M L SL dB A 49 44 38 33 53 45 39 34 Outdoor Unit RK18NMVJU RK24NMVJU Casing Color Ivory White Ivory White Compressor Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Model 2YC36PXD 2YC36PXD Motor Output W 1 100 1 100 Refrigerant Oil Type FVC50K FVC50K Charge oz L 21 5 0 650 21 5 0 650 Refrigerant Type R 410A R 410A Charge Lbs kg 2 49 1 13 3 20 1 45 Airflow Rate H m min cfm 69 7 2 461 59 5 2 101 SL 59 7 2 108 49 9 1 762 Fan Type Propeller Propeller Motor Output W 69 58 Running Current Rated A 6 77 6 12 7 98 7 21 Power Consumption Rated W 1 383 1 383 1 638 1 638 Power Factor Rated 98 2 98 3 98 7 98 8 Starting Current A 7 20 8 41 Dimensions H W D in mm 28 15 16 34 1 4 12 5 8 735 870 320 28 15 16 34 1 4 12 5 8 735
134. s fed from the output overcurrent detection circuit to the microcomputer If the error repeats the system is shut down Reset condition Continuous run for about 11 minutes without any other error Supposed Causes Poor installation condition Closed stop valve Defective power module Wrong internal wiring Abnormal power supply voltage Defective outdoor unit PCB Power supply voltage is not as specified Defective compressor SiUS041501E Troubleshooting Service Diagnosis 90 Troubleshooting Check No 15 Refer to P 95 Check No 17 Refer to P 98 Check No 18 Refer to P 98 Check No 22 Refer to P 100 R21438 Caution NO YES NO YES NO YES NO YES NO YES YES NO An output overcurrent may result from wrong internal wiring If the system is interrupted by an output overcurrent after the wires have been disconnected and reconnected for part replacement check the wiring again Check No 22 Check No 17 Check No 15 Turn off the power and disconnect the harnesses U V and W Turn off the power and reconnect the harnesses Turn on the power again and start operation Turn off the power Then turn on the power to restart the system See if the same error occurs Check the power supply voltage Monitor the power supply voltage discharge and suction pressures and other factors for a long term Possible causes Momentary drop of power supply voltage Compressor
135. stor 3 12 2 Detection of Overcurrent and Overload Outline An excessive output current is detected and the OL temperature is observed to protect the compressor Detail If the OL compressor head temperature exceeds 130 C 266 F the system shuts down the compressor If the inverter current exceeds 7 75 18 0 A depending on the model the system shuts down the compressor The upper limit of the current decreases when the outdoor temperature exceeds a certain level SiUS041501E Remote Controller 48 Part 5 Remote Controller 1 Cooling Only 49 2 Heat Pump 51 Cooling Only SiUS041501E 49 Remote Controller 1 Cooling Only Note Refer to the operation manual of applicable model for detail You can download operation manual from Daikin Business Portal Daikin Business Portal Product Information Operation Installation Manual URL https global1d daikin com business_portal login Display LCD Displays the current settings In this illustration each section is shown with all its displays on for the purpose of explanation FTKN N Series ARC480A7 FTK N Series ARC480A9 R21662 Signal transmitter To use the remote controller aim the transmitter at the indoor unit If there is anything blocking the sig
136. tead of compressor and check the output of the inverter Operation Method Step 1 Be sure to turn off the power Step 2 Install an inverter analyzer instead of a compressor Note Make sure the charged voltage of the built in smoothing electrolytic capacitor drops to 10 VDC or below before carrying out the service work Reference If the terminals of the compressor are not FASTON terminals difficult to remove the wire on the terminals it is possible to connect wires available on site to the outdoor unit from output side of PCB Do not connect them to the compressor at the same time otherwise it may result in incorrect detection R18322 1 Remove the terminals from the compressor 2 Connect the terminals to the terminals of the inverter analyzer Compressor Inverter analyzer Be careful not to let the terminals U V W touch each other Otherwise high voltage is applied SiUS041501E Check Service Diagnosis 96 Step 3 Activate power transistor test operation from the indoor unit 1 Turn the power on 2 Press the center of the TEMP button and the OFF button on the remote controller at the same time 3 Select T with the TEMP or TEMP button 4 Press the FAN button 5 Press the FAN ONLY button to start the power transistor test operation Diagnose method Diagnose according to 6 LEDs lighting status 1 If all the LEDs are lit uniformly the compressor is defective Replace the com
137. the compressor from OFF to ON the upper limit of frequency is set as follows The function is not activated when defrosting 09 12 class RKN18NMVJU RXN18NMVJU RK X 18NMVJU 24 class Cooling Heating Cooling Heating A Hz 40 54 48 B seconds 60 70 C C 10 15 F 50 59 sec Time R13528 Hz Frequency C B D E F A 09 12 class RKN18NMVJU RXN18NMVJU RK X 18NMVJU 24 class A Hz 40 52 B Hz 54 68 C Hz 72 80 D seconds 180 300 E seconds 420 200 F seconds 180 460 Control Specification SiUS041501E 39 Function and Control 3 4 Discharge Pipe Temperature Control Outline The discharge pipe temperature is used as the internal temperature of the compressor If the discharge pipe temperature rises above a certain level the upper limit of frequency is set to keep the discharge pipe temperature from rising further Detail Zone Control Stop zone When the temperature reaches the stop zone the compressor stops Dropping zone The upper limit of frequency decreases Keep zone The upper limit of frequency is kept Up zone The upper limit of frequency increases Reset zone The upper limit of frequency is canceled 09 12 class RKN18NMVJU RXN18NMVJU RK X 18NMVJU 24 class C F C F A 110 230 0 110 230 0 B 103 217 4 103 217 4 C 98 208 4 101 5 214 7 D 93 199 4 100 212 0 E 88 190 4 95 203 0 R14722 Discha
138. the room The refrigerant gas itself is harmless but it may generate toxic gases when it contacts flames such as fan and other heaters stoves and ranges When relocating the equipment make sure that the new installation site has sufficient strength to withstand the weight of the equipment If the installation site does not have sufficient strength and if the installation work is not conducted securely the equipment may fall and cause injury Check to make sure that the power cable plug is not dirty or loose then insert the plug into a power outlet securely If the plug has dust or loose connection it may cause an electrical shock or fire Be sure to install the product correctly by using the provided standard installation frame Incorrect use of the installation frame and improper installation may cause the equipment to fall resulting in injury For unitary type only Be sure to install the product securely in the installation frame mounted on the window frame If the unit is not securely mounted it may fall and cause injury For unitary type only When replacing the coin battery in the remote controller be sure to dispose of the old battery to prevent children from swallowing it If a child swallows the coin battery see a doctor immediately Warning Safety Cautions SiUS041501E ix Caution Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site to prevent e
139. tion limit for cooling FDB 50 114 8 50 114 8 Titanium apatite photocatalytic air purifying filter option Operation limit for heating CWB 15 18 Air filter prefilter Operation limit for heating FWB 5 64 4 Wipe clean flat panel Washable grille PAM control MOLD PROOF operation Standby electricity saving Good sleep cooling operation Compressor Oval scroll compressor Timer WEEKLY TIMER Swing compressor Count up down ON OFF timer Rotary compressor 24 hour ON OFF TIMER Reluctance DC motor NIGHT SET mode Comfortable Airflow Power airflow flap horizontal blade Worry Free Reliability amp Durability Auto restart after power failure Power airflow dual flaps Self diagnosis R C LED Power airflow diffuser Wiring error check function Wide angle louvers vertical blade Anti corrosion treatment of outdoor heat exchanger Auto swing up and down Auto swing right and left Flexibility Multi split split type compatible indoor unit 3 D airflow COMFORT AIRFLOW operation H P C O compatible indoor unit Comfort Control Auto fan speed Flexible power supply correspondence Indoor unit quiet operation Chargeless 32 8 ft 10 m 32 8 ft 10 m NIGHT QUIET mode automatic OUTDOOR UNIT QUIET operation manual Either sid
140. to P 93 Check No 15 Refer to P 95 Turn off the power Disconnect the harnesses U V and W R21067 Caution NO YES YES NO NO YES NO YES Check No 15 Check with the inverter analyzer Turn off the power and reconnect the harnesses Turn on the power again and restart the system Precaution before turning on the power again Make sure the power has been off for at least 30 seconds Correct the power supply or replace the outdoor unit PCB main PCB Open the stop valve Inverter analyzer RSUK0917C Replace the compressor Replace the compressor Check the electronic expansion valve coil Go to Check No 12 Any LED off Stop valve closed Emergency stop without compressor running System shut down after errors repeated several times Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Troubleshooting SiUS041501E 75 Service Diagnosis 4 12 DC Fan Lock Error Code E7 Method of Error Detection An error is determined with the high voltage fan motor rotation speed detected by the Hall IC Error Decision Conditions The fan does not start in 15 30 seconds even when the fan motor is running If the error repeats the system is shut down Reset condition Continuous run for about 11 minutes without any other error Supposed Causes Disconnection of the fan motor Foreign matter stuck in the fan Defectiv
141. u cut any of them Caution 1 If the outdoor unit is installed where the outdoor heat exchanger of the unit is exposed to direct wind provide a windbreak wall 2 Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and off when using facility settings 3 Do not place humidifiers or other items which might raise the humidity in rooms where facility settings are being used A humidifier might cause dew jumping from the indoor unit outlet vent 4 Cutting jumper sets the indoor fan tap to the highest position SiUS041501E Silicon Grease on Power Transistor Diode Bridge Trial Operation and Field Settings 108 4 Silicon Grease on Power Transistor Diode Bridge Outline Apply the specified silicon grease to the heat radiation part of a power transistor diode bridge when you replace an outdoor unit PCB The silicon grease encourages the heat radiation of a power transistor diode bridge Detail 1 Wipe off the old silicon grease completely 2 Apply the silicon grease evenly See the illustrations below for examples of application 3 Tighten the screws of the power transistor diode bridge 4 Make sure that the heat radiation parts are firmly contacted to the radiation fin Note Smoke emission may be caused by bad heat radiation when the silicon grease is not appropriately applied OK Evenly applied NG Not evenly applied NG Foreign matter is stuck R21865 Power transistor or
142. ut W 1 100 1 100 Refrigerant Oil Type FVC50K FVC50K Charge oz L 21 5 0 650 21 5 0 650 Refrigerant Type R 410A R 410A Charge Lbs kg 2 49 1 13 3 20 1 45 Airflow Rate H m min cfm 69 7 2 461 62 8 2 217 59 5 2 101 53 6 1 893 SL 59 7 2 108 53 7 1 896 49 9 1 762 44 9 1 585 Fan Type Propeller Propeller Motor Output W 69 58 Running Current Rated A 6 77 6 12 8 25 7 46 7 98 7 21 9 47 8 56 Power Consumption Rated W 1 383 1 383 1 700 1 700 1 638 1 638 1 952 1 952 Power Factor Rated 98 2 98 3 99 1 99 1 98 7 98 8 99 1 99 1 Starting Current A 8 68 9 90 Dimensions H W D in mm 28 15 16 34 1 4 12 5 8 735 870 320 28 15 16 34 1 4 12 5 8 735 870 320 Packaged Dimensions H W D in mm 31 7 8 41 9 16 17 1 2 810 1 056 444 31 7 8 41 9 16 17 1 2 810 1 056 444 Weight Lbs kg 97 44 108 49 Gross Weight Lbs kg 115 52 126 57 Sound Pressure Level H dB A 54 54 55 55 Drawing No 3D093562 3D093563A Conversion Formulae kcal h kW 860 Btu h kW 3412 cfm m min 35 3 Cooling Indoor 80 FDB 26 7 CDB 67 FWB 19 4 CWB Outdoor 95 FDB 35 CDB 75 FWB 24 CWB Heating Indoor 70 FDB 21 CDB 60 FWB 15 6 CWB Outdoor 47 FDB 8 3 CDB 43 FWB 6 CWB Piping Length 25 ft 7 5 m SiUS041501E 15 Printed Circuit
143. ve control when the frequency changes 3 Electronic expansion valve control for defrosting 4 Electronic expansion valve control when the discharge pipe temperature is abnormally high 5 Electronic expansion valve control when the discharge pipe thermistor is disconnected Feedback Control Target discharge pipe temperature control Detail The followings are the examples of electronic expansion valve control which function in each operation mode Available Not available Control Status Starting operation control Control when the frequency changes Target discharge pipe temperature control Discharge pipe thermistor disconnection control High discharge pipe temperature control Defrost control heating only Pressure equalizing control Opening limit control Power on Compressor stop Operation start Frequency change under starting control During target discharge pipe temperature control Frequency change under target discharge pipe temperature control Discharge pipe thermistor disconnection Frequency change under discharge pipe thermistor disconnection control During defrost control Control Specification SiUS041501E 45 Function and Control 3 11 1 Fully Closing with Power ON The electronic expansion valve is initialized when turning on the power The opening position is set and the pressure is equalized 3 11 2 Pressure Equalizing Control When the compressor is stopped the pressure equalizing co
144. vice Diagnosis 58 Method 2 1 Press the center of the TEMP button and the OFF button at the same time 5C is displayed on the LCD 2 Select 5C service check with the TEMP or TEMP button 3 Press the FAN button to enter the service check mode 00 is displayed and the left side number blinks 4 Press the TEMP or TEMP button and change the number until you hear the two consecutive beeps or the long beep R21666 R21059 R21667 R21061 R21668 Service Diagnosis SiUS041501E 59 Service Diagnosis 5 Diagnose by the sound beep The left side number does not correspond with the error code two consecutive beeps The left side number corresponds with the error code but the right side number does not long beep Both the left side and right side numbers correspond with the error code The numbers indicated when you hear the long beep are the error code Refer to page 60 6 Press the FAN button The right side number blinks 7 Press the TEMP or TEMP button and change the number until you hear the long beep 8 Diagnose by the sound beep The left side number does not correspond with the error code two consecutive beeps The left side number corresponds with the error code but the right side number does not long beep Both the left side and right side numbers correspond with the error code 9 Determine the error code The numbers indicated when you hear the long beep are the error code
145. y Is the voltage fluctuation within 10 from the rated value SiUS041501E Troubleshooting Service Diagnosis 68 4 7 Signal Transmission Error between Indoor Unit and Outdoor Unit Error Code U4 Method of Error Detection The data received from the outdoor unit in signal transmission is checked whether it is normal Error Decision Conditions The data sent from the outdoor unit cannot be received normally or the content of the data is abnormal Supposed Causes Power supply voltage is not as specified Reduction of power supply voltage Wiring error Breaking of the connecting wires between the indoor and outdoor units wire No 3 Defective outdoor unit PCB Short circuit inside the fan motor winding Defective indoor unit PCB Disturbed power supply waveform Troubleshooting SiUS041501E 69 Service Diagnosis Troubleshooting Check No 11 Refer to P 93 Check No 11 Check the power supply waveform Check the voltage of the connection wires on the indoor terminal board between No 1 and No 3 and between No 2 and No 3 YES Blink Replace the indoor unit PCB control PCB Locate the cause of the disturbance of the power supply waveform and correct it NO R21189 Continuously ON or OFF NO YES YES NO Caution Correct the indoor unit outdoor unit connection wires Replace the outdoor unit PCB main PCB Replace the connection wires between the indoor unit and

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