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SiUS042113E

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Table of Contents

Introduction ....................................................................................... 1

1. Safety Cautions...........................................................................................2

1.1 Warnings and Cautions Regarding Safety of Workers................................. 2
1.2 Warnings and Cautions Regarding Safety of Users..................................... 4

2. Icons Used ..................................................................................................7
3. Revision History ..........................................................................................8

Part 1 General Information ............................................................... 9

1. Applicable Models .....................................................................................10
2. Functions...................................................................................................11

Part 2 Specifications....................................................................... 12

1. Specifications ............................................................................................13

Part 3 Printed Circuit Board Connector Wiring Diagram................ 15

1. Indoor Unit.................................................................................................16
2. Outdoor Unit..............................................................................................20

2.1 09/12 class ................................................................................................. 20
2.2 18/24 class ................................................................................................. 21

Part 4 Functions and Control .......................................................... 23

1. Main Functions..........................................................................................24

1.1 Temperature Control .................................................................................. 24
1.2 Frequency Principle.................................................................................... 24
1.3 Airflow Direction Control............................................................................. 26
1.4 COMFORT AIRFLOW Operation ............................................................... 27
1.5 Fan Speed Control for Indoor Unit ............................................................. 29
1.6 Hybrid Cooling............................................................................................ 30
1.7 Automatic Cooling/Heating Changeover .................................................... 33
1.8 Thermostat Control..................................................................................... 34
1.9 NIGHT SET Mode ...................................................................................... 35
1.10 ECONO Operation .................................................................................... 35
1.11 2-Area INTELLIGENT EYE Operation ....................................................... 36
1.12 INTELLIGENT EYE Operation ................................................................... 40
1.13 POWERFUL Operation .............................................................................. 42
1.14 Clock Setting .............................................................................................. 43
1.15 WEEKLY TIMER Operation ....................................................................... 44
1.16 Brightness Setting of Indoor Unit Display................................................... 50
1.17 CLEAN Operation....................................................................................... 51
1.18 Wireless LAN Connection .......................................................................... 53
1.19 Other Functions.......................................................................................... 58

2. Thermistor Functions ................................................................................59
3. Control Specification .................................................................................61

3.1 Mode Hierarchy .......................................................................................... 61

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Содержание FTXM-V Series

Страница 1: ...Applied Models Inverter Pair Heat Pump Inverter Pair Wall Mounted Type FTXM V Series Service Manual SiUS042113E...

Страница 2: ...23 1 Main Functions 24 1 1 Temperature Control 24 1 2 Frequency Principle 24 1 3 Airflow Direction Control 26 1 4 COMFORT AIRFLOW Operation 27 1 5 Fan Speed Control for Indoor Unit 29 1 6 Hybrid Cool...

Страница 3: ...2 2 Outdoor Unit 85 3 Service Diagnosis 86 3 1 Method 1 86 3 2 Method 2 87 4 Troubleshooting 89 4 1 Error Codes and Description 89 4 2 Indoor Unit PCB Abnormality 90 4 3 Freeze up Protection Control H...

Страница 4: ...Inverter Analyzer Check 138 5 8 Rotation Pulse Check on the Outdoor Unit PCB 140 5 9 Installation Condition Check 141 5 10 Discharge Pressure Check 142 5 11 Outdoor Fan System Check 142 5 12 Main Cir...

Страница 5: ...S042113E Introduction 1 1 Safety Cautions 2 1 1 Warnings and Cautions Regarding Safety of Workers 2 1 2 Warnings and Cautions Regarding Safety of Users 4 2 Icons Used 7 3 Revision History 8 Introducti...

Страница 6: ...in the illustration or near the symbol 1 1 Warnings and Cautions Regarding Safety of Workers This manual is for the person in charge of maintenance and inspection This appliance is filled with R 32 Wa...

Страница 7: ...nt The use of materials for R 22 refrigerant models may cause a serious accident such as a damage of refrigerant cycle or equipment failure Do not mix air or gas other than the specified refrigerant R...

Страница 8: ...he 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 th...

Страница 9: ...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 is dusty or has a loose connection it may cause an electrical shock or fire...

Страница 10: ...nce 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 water to enter the room and wet the fur...

Страница 11: ...tion is used when there is danger that the reader through incorrect manipulation may damage equipment lose data get an unexpected result or have to restart part of a procedure Note Note Note provides...

Страница 12: ...Revision History SiUS042113E 8 Introduction 3 Revision History Month Year Version Revised contents 04 2021 SiUS042113E First edition...

Страница 13: ...SiUS042113E Part 1 General Information 9 1 Applicable Models 10 2 Functions 11 Part 1 General Information...

Страница 14: ...Applicable Models SiUS042113E 10 Part 1 General Information 1 Applicable Models Indoor Unit Outdoor Unit FTXM09VVJU FTXM12VVJU FTXM18VVJU FTXM24VVJU RXM09VVJU RXM12VVJU RXM18VVJU RXM24VVJU...

Страница 15: ...ogram dry function Hybrid cooling dehumidifying function Fan operation Lifestyle Convenience Inverter powerful operation ECONO operation Indoor unit ON OFF button Signal reception indicator Health and...

Страница 16: ...SiUS042113E 12 Part 2 Specifications 1 Specifications 13 Part 2 Specifications...

Страница 17: ...9 3 4 15 3 8 380 1 010 391 Weight Mass Lbs kg 29 13 29 13 Gross Weight Gross Mass Lbs kg 38 17 38 17 Sound Pressure Level H M L SL dB A 43 33 25 22 43 35 30 25 45 37 29 23 45 39 32 26 Outdoor Unit RXM...

Страница 18: ...47 11 16 15 1 2 401 1 212 393 Weight Mass Lbs kg 33 15 33 15 Gross Weight Gross Mass Lbs kg 46 21 46 21 Sound Pressure Level H M L SL dB A 49 41 36 33 49 40 35 32 51 44 37 34 51 42 37 34 Outdoor Unit...

Страница 19: ...SiUS042113E Part 3 Printed Circuit Board Connector Wiring Diagram 15 1 Indoor Unit 16 2 Outdoor Unit 20 2 1 09 12 class 20 2 2 18 24 class 21 Part 3 Printed Circuit Board Connector Wiring Diagram...

Страница 20: ...S300A S301B Connector for power supply PCB A2P 5 S400 Connector for swing motors 6 S501 Connector for indoor heat exchanger thermistor R1T 7 S600 Connector for humidity sensor PCB A4P 8 S602 Connector...

Страница 21: ...ring Diagram 17 Power Supply PCB A2P 1 S101 Connector for terminal strip indoor outdoor transmission 2 S102 S103 Connector for control PCB A1P 3 FG Connector for terminal strip frame ground 4 F1U Fuse...

Страница 22: ...on ON OFF switch Refer to page 149 for details of forced cooling operation 3 H1P LED for operation green 4 H2P LED for timer yellow 5 H3P LED for CLEAN operation green 6 H4P LED for INTELLIGENT EYE gr...

Страница 23: ...SiUS042113E Indoor Unit Part 3 Printed Circuit Board Connector Wiring Diagram 19 Wireless LAN connection PCB A6P 1 Connector Connector for control PCB A1P Connector 2P571193 4...

Страница 24: ...tor for four way valve 5 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe temperature 6 S97 Connector for liquid pipe thermistor 7 HL1 HN1 S Wire harness for ter...

Страница 25: ...four way valve coil 6 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe liquid pipe 7 S201 S202 Wire harness for service monitor PCB A2P 8 CK1 Wire harness for vo...

Страница 26: ...itor PCB A2P SW1 SW4 and LED1 LED5 do not work 1 S501 S502 Connector for main PCB A1P 2 LEDA LED for service monitor green 3 SW5 3 Switch for facility setting Refer to page 153 for details 4 SW6 1 Swi...

Страница 27: ...peration 44 1 16 Brightness Setting of Indoor Unit Display 50 1 17 CLEAN Operation 51 1 18 Wireless LAN Connection 53 1 19 Other Functions 58 2 Thermistor Functions 59 3 Control Specification 61 3 1 M...

Страница 28: ...om 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 dif...

Страница 29: ...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 temperatu...

Страница 30: ...omfortable air distribution Auto Swing The following tables explain the auto swing process for cooling dry heating and fan 3 D Airflow Alternative repetition of vertical and horizontal swing motions e...

Страница 31: ...airflow in low velocity even with the large air volume Wind reaches far Reaching distance 16 4 ft 5 m for 09 12 class 32 8 ft 10 m for 18 24 class The comfort mode is set during cooling Measure the di...

Страница 32: ...AIRFLOW operation cannot be used at the same time The airflow rate will be set to AUTO If the upward and downward airflow direction is selected the COMFORT AIRFLOW function will be canceled Priority...

Страница 33: ...omatically controlled within this range when FAN setting button is set to automatic Cooling The following drawing explains the principle of fan speed control for cooling The upper limit is at M tap in...

Страница 34: ...part of the heat exchanger is cooled The cool dehumidified air is mixed with the room air and then blown out at around the same temperature with the room air This is to keep dehumidification effect af...

Страница 35: ...nce unchanged 1 Suction air 2 Dehumidified suction air air passed through the cooled part of the heat exchanger 3 Dehumidified air mixed with room air Room temperature control in dry operation Room te...

Страница 36: ...operation and different from that in cooling operation Liquid pipe temperature control using electronic expansion valve Evaporation temperature in indoor unit is controlled to make the temperature in...

Страница 37: ...s 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 p...

Страница 38: ...mes 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 Heating...

Страница 39: ...apacity does not allow the use of multiple electrical devices and air conditioners It can be easily activated by pressing Econo Quiet button on the wireless remote controller Details When this functio...

Страница 40: ...ng presence of humans in each area Moving the airflow direction to the area with no human automatically to avoid direct airflow on humans Details 1 INTELLIGENT EYE detection method R4003811 The motion...

Страница 41: ...temperature shifted from the target temperature Cooling Dry 1 2 C 1 8 3 6 F higher Heating 2 C 3 6 F lower Auto according to the operation mode at that time Top view R22951 Indoor unit Wall Area A Are...

Страница 42: ...the people R4003787 Notes on energy saving operation If no presence detected in the room for 20 minutes the energy saving operation will start and the INTELLIGENT EYE lamp goes off If human movement...

Страница 43: ...le in both areas 1 and 2 The air will also flow left if there is a person right in front of the sensor as the sensor judges that there are people in both areas Due to the position of the sensor people...

Страница 44: ...0 rpm when no one is in the area When there is no signal from the motion sensor in 20 minutes the microcomputer judges that nobody is in the room and operates the unit at a temperature shifted from th...

Страница 45: ...F 1 0 C in DRY operation from the set temperature This operation decreases the airflow rate slightly in FAN operation only Notes on INTELLIGENT EYE operation Application range is as follows The air c...

Страница 46: ...cooling POWERFUL operation cannot be used together with ECONO COMFORT AIRFLOW or OUTDOOR UNIT QUIET operation Operation mode Fan speed Target temperature COOL H tap A rpm 18 C 64 4 F DRY Dry rotating...

Страница 47: ...utton to set the clock to the current day of the week 3 Press Clock button blinks 4 Press Select or Select button to set the clock to the present time Holding down Select or Select button rapidly incr...

Страница 48: ...e settings for Tuesday to Friday because these settings are the same as those for Monday 6 00 8 30 17 30 22 00 77 F 25 0 C 81 F 27 0 C program 1 program 2 program 3 program 4 ON OFF ON OFF Saturday No...

Страница 49: ...o 4 settings can be made per day 2 Press to select the desired day of the week and reservation number Pressing changes the reservation number and the day of the week 3 Press The day of the week and re...

Страница 50: ...the case of OFF TIMER operation The next reservation screen will appear To continue further settings repeat the procedure from STEP 4 Display 10 Press to complete the setting is displayed on the LCD a...

Страница 51: ...will be copied 4 Press to select the destination day of the week 5 Press Check for a receiving tone and that the OPERATION lamp blinks twice The reservation will be copied to the selected day of the...

Страница 52: ...The mode is switched to setting mode Proceed to Setting mode STEP 4 3 Press is displayed on the LCD and WEEKLY TIMER operation is activated To deactivate WEEKLY TIMER operation Press while is displaye...

Страница 53: ...ther reservations WEEKLY TIMER operation will be activated Reservations for each day of the week This function can be used for deleting reservations for each day of the week 1 Press The day of the wee...

Страница 54: ...o select menu number 1 LED appears and 1 blinks R4003795 3 Press Menu push 2sec button to confirm the select setting 4 Press Select or Select button to change the setting as follows R4003796 5 Press M...

Страница 55: ...ote on CLEAN setting The display automatically returns to the default screen after 60 seconds To return to the default screen sooner press Cancel button twice Notes on CLEAN operation When you want to...

Страница 56: ...between CLEAN operation and indoor unit lamps Air conditioner LCD CLEAN lamp Operating OPERATION lamp lights up CLEAN is ON Lights up CLEAN is OFF Goes off Not operating OPERATION lamp goes off CLEAN...

Страница 57: ...nt Application name Daikin Comfort Control App free For details on the installation method for the Daikin Comfort Control App Wireless LAN connection adapter lamp Orange The Wireless LAN connection ad...

Страница 58: ...CC radio frequency RF Exposure Guidelines This equipment should be installed and operated keeping the radiator at least 7 7 8 inches 20cm or more away from person s body NOTE This equipment has been t...

Страница 59: ...screen To connect the wireless LAN connection adapter to your home network The wireless LAN connection adapter can be connected to your home network using the WPS button on the router if present the...

Страница 60: ...ction 1 While operation is stopped press and hold the button for 5 seconds 2 Press or and select menu number appears on the LCD blinks 3 Press to connect to the access point The wireless LAN connectio...

Страница 61: ...the factory default If you want to reset the connection settings it is possible to initialize the wireless LAN connection adapter to its factory default state If initialized data including the network...

Страница 62: ...nit Press ON OFF switch once to start operation Press once again to stop it ON OFF switch is useful when the remote controller is missing or the battery has run out The operation mode refers to the fo...

Страница 63: ...used for high pressure protection 3 Outdoor Temperature Thermistor The outdoor temperature thermistor detects the outdoor air temperature and is used for refrigerant shortage detection input current...

Страница 64: ...mperature and is used for controlling the room air temperature 6 Liquid Pipe Thermistor The liquid pipe thermistor is used for control in hybrid cooling The microcomputer sets the target liquid pipe t...

Страница 65: ...tioner 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...

Страница 66: ...equency There is a certain 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...

Страница 67: ...door unit quiet operation command comes from the indoor unit the upper limit frequency is lower than the usual setting 3 3 Standby Electricity Saving Suspend Function Outline This function is to save...

Страница 68: ...ch of the four way valve is carried out Details OFF delay switch of four way valve The four way valve coil is energized for 160 seconds after the operation is stopped 10 seconds in heating operation w...

Страница 69: ...Function When turning the compressor from OFF to ON the upper limit of frequency is set as follows The function is not used when defrosting 09 12 class 18 24 class Cooling Heating Cooling Heating A H...

Страница 70: ...keep the discharge pipe temperature from rising further Details Zone Control Stop zone When the temperature reaches the stop zone the compressor stops Dropping zone The upper limit of frequency decrea...

Страница 71: ...ped Dropping zone The upper limit of the compressor frequency is defined as operation frequency 2 Hz After this the output frequency is lowered by 2 Hz every second until it reaches the keep zone Keep...

Страница 72: ...al high pressure The operating frequency limitation is judged with the indoor heat exchanger temperature Reset zone Up zone Keep zone Dropping zone Stop zone 13 C 55 4 F 7 C 44 6 F 3 C 37 4 F 0 C 32 0...

Страница 73: ...the high pressure safety device the below control function will be activated Details Indoor heat exchanger temperature Stop zone Dropping zone Keep zone Up zone Reset zone Pressure 4 15 MPa High Press...

Страница 74: ...tdoor fan is controlled as well as normal operation 5 Fan speed control during forced operation The outdoor fan is controlled as well as normal operation during forced operation 6 Fan speed control du...

Страница 75: ...ing on the duration of the previous defrost control of accumulated time have passed after the start of the operation or ending the previous defrosting Conditions for Canceling Defrost The judgment is...

Страница 76: ...the discharge pipe thermistor is disconnected Feedback Control Target discharge pipe temperature control Details The followings are the examples of electronic expansion valve control for each operati...

Страница 77: ...defrosting 3 13 4 Starting Operation Control The electronic expansion valve opening is controlled when the operation starts thus preventing superheating or liquid compression 3 13 5 Control when the...

Страница 78: ...ng control Cooling A seconds Heating B seconds finishes the detection timer for disconnection of the discharge pipe thermistor C seconds starts When the timer is over the following adjustments are mad...

Страница 79: ...temperature 3 14 Malfunctions 3 14 1 Sensor Malfunction Detection Sensor malfunction can be detected in the following thermistor 1 Outdoor heat exchanger thermistor 2 Discharge pipe thermistor 3 Radi...

Страница 80: ...SiUS042113E 76 Part 5 Remote Controller 1 Applicable Remote Controller 77 2 ARC466A70 78 3 ARC466A71 80 Part 5 Remote Controller...

Страница 81: ...le model for details You can download operation manuals from Daikin Business Portal Daikin Business Portal Document Search Item Category Installation Operation Manual URL https global1d daikin com bus...

Страница 82: ...r 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 FAN setting...

Страница 83: ...own or and the louver moves right and left The flap louver stops when you press SWING button again Adjusts the display brightness MOLD PROOF operation Flash streamer air cleaning operation OUTDOOR UNI...

Страница 84: ...r 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 FAN setting...

Страница 85: ...Priority is given to the function you pressed last ECONO 5 QUIET button ECONO Blank No setting Combination Every time you press ECONO QUIET button the setting changes in the following order OUTDOOR U...

Страница 86: ...oor Unit and Outdoor Unit 103 4 11 Outdoor Unit PCB Abnormality 104 4 12 Actuation of High Pressure Switch 105 4 13 OL Activation Compressor Overload 106 4 14 Compressor Lock 109 4 15 DC Fan Lock 110...

Страница 87: ...nverter Unit Refrigerant System Check 138 5 7 Inverter Analyzer Check 138 5 8 Rotation Pulse Check on the Outdoor Unit PCB 140 5 9 Installation Condition Check 141 5 10 Discharge Pressure Check 142 5...

Страница 88: ...on lamp OFF Check the outdoor temperature Heating cooling operations are not available when the outdoor temperature is out of the operation limit Check the reference page for the operation limit 167 D...

Страница 89: ...ndoor or outdoor unit is activated or when the thermistor malfunctions 2 A signal transmission error occurs between the indoor and outdoor units In either case conduct the diagnostic procedure describ...

Страница 90: ...ds 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...

Страница 91: ...ton 3 Press Mode button to enter the service check mode The left side number blinks R6000373 4 Press Temp or Temp button and change the number until you hear the two consecutive beeps or the long beep...

Страница 92: ...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 th...

Страница 93: ...Outdoor Unit E1 Outdoor unit PCB abnormality 104 E3 Actuation of high pressure switch 105 E5 OL activation compressor overload 106 E6 Compressor lock 109 E7 DC fan lock 110 E8 Input overcurrent detect...

Страница 94: ...rness Correct the connection OK Start operation Error repeats Start operation Error repeats Error repeats Combination of the indoor and outdoor unit matched YES NO NO YES NO NO YES Caution To secure t...

Страница 95: ...ng peak cut control During heating operation the indoor heat exchanger temperature is above 60 62 C 140 144 F Supposed Causes Short circuited air Clogged air filter of the indoor unit Dust accumulatio...

Страница 96: ...Troubleshooting SiUS042113E 92 Part 6 Service Diagnosis Reference Check No 01 Refer to P 134...

Страница 97: ...cision 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 The fan motor does not rotate for...

Страница 98: ...lug the power cable or turn the breaker off Check No 03 NO YES YES NO Check the fan motor for breakdown or short circuit Fan rotates smoothly Resistance OK Replace the indoor fan motor Replace the ind...

Страница 99: ...Causes Disconnection of connector Defective thermistor s Defective indoor unit PCB Troubleshooting C4 Indoor heat exchanger thermistor C9 Room temperature thermistor Check No 01 Refer to P 134 YES R21...

Страница 100: ...ty sensor Supposed Causes Disconnection of connector Defective humidity sensor Defective indoor unit PCB Troubleshooting R6000515 Correct the connection Replace the control PCB Completed Normal Cautio...

Страница 101: ...Output frequency C Refrigerant shortage detection II The following conditions continue for 80 seconds Opening of the electronic expansion valve D Discharge pipe temperature E target discharge pipe tem...

Страница 102: ...ce the union Check if any harnesses are in contact with the piping and correct as required Also replace any cracked pipes Check the connection of the power transistor harness Also replace any cracked...

Страница 103: ...by the DC voltage detection circuit is below 162 V 09 12 class 160 V 18 24 class The compressor stops if the error occurs and restarts automatically after 3 minute standby Over voltage detection The...

Страница 104: ...er 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...

Страница 105: ...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 out of specification Reduct...

Страница 106: ...wires between the indoor unit and 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 LE...

Страница 107: ...nterconnected 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...

Страница 108: ...control The zero cross signal is not detected Supposed Causes Defective outdoor unit PCB Noise Momentary drop of voltage Momentary power failure Troubleshooting R21809 Caution Be sure to turn off the...

Страница 109: ...B Broken S1PH harness Defective high pressure switch S1PH Troubleshooting NO YES Nearly 0 Resistance Check the resistance between the pins 1 2 on the connector S40 Stop valve open Open the stop valve...

Страница 110: ...t 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 conne...

Страница 111: ...ronic 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 Disch...

Страница 112: ...Troubleshooting SiUS042113E 108 Part 6 Service Diagnosis Reference Reference Check No 13 Refer to P 137 Check No 14 Refer to P 138...

Страница 113: ...er 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...

Страница 114: ...fan motor Foreign matter stuck in the fan Defective fan motor Defective outdoor unit PCB Troubleshooting Check No 16 Refer to P 140 R20416 Caution YES YES NO YES NO NO YES NO Turn on the power Rotate...

Страница 115: ...e with the compressor running Error Decision Conditions The current exceeds about 13 20 A depending on the model for 2 5 seconds with the compressor running The upper limit of the current decreases wh...

Страница 116: ...ires 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 Chec...

Страница 117: ...r 1 10 minutes depending on the model after operating for 5 10 minutes depending on the model Cooling Dry A B 5 C A B 9 F Heating B A 5 C B A 9 F A Room thermistor temperature B Indoor heat exchanger...

Страница 118: ...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 shortag...

Страница 119: ...e or coil Refrigerant shortage Defective four way valve Water mixed in refrigerant Defective stop valve Defective outdoor unit PCB Troubleshooting A B C F C F 1 above 50 Hz rising above 45 Hz dropping...

Страница 120: ...Troubleshooting SiUS042113E 116 Part 6 Service Diagnosis Reference Reference Reference Check No 01 Refer to P 134 Check No 12 Refer to P 136 Check No 14 Refer to P 138...

Страница 121: ...r exceeds the limit Error Decision Conditions The temperature sensed by the outdoor heat exchanger thermistor rises above A The error is cleared when the temperature drops below B Supposed Causes Inst...

Страница 122: ...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 outdo...

Страница 123: ...ed Causes Abnormal operation due to air intrusion Defective discharge pipe thermistor Troubleshooting Check No 01 Refer to P 134 YES R23655 NO OK NG Caution Replace the outdoor unit Replace both the d...

Страница 124: ...tage before compressor start up is below 50 V Supposed Causes Broken or disconnected harness Defective outdoor unit PCB Troubleshooting Caution Be sure to turn off the power switch before connecting o...

Страница 125: ...ough 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 P...

Страница 126: ...n 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 u...

Страница 127: ...SiUS042113E Troubleshooting Part 6 Service Diagnosis 123 Reference Reference Reference Check No 15 Refer to P 138 Check No 18 Refer to P 142 Check No 20 Refer to P 142...

Страница 128: ...compressor running frequency and the input current Error Decision Conditions If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error S...

Страница 129: ...nd restart operation Check No 15 Check with the inverter analyzer Inverter analyzer RSUK0917C Voltage within the allowable range Power supply voltage 15 Replace the outdoor unit PCB main PCB Check the...

Страница 130: ...or 0 04 V or less with the power on J3 error is judged if the discharge pipe temperature is lower than the heat exchanger temperature Supposed Causes Disconnection of the connector for the thermistor...

Страница 131: ...place the defective thermistor s Outdoor temperature thermistor Discharge pipe thermistor Outdoor heat exchanger thermistor Liquid pipe thermistor Cooling Outdoor heat exchanger thermistor Heating Ind...

Страница 132: ...utdoor unit PCB Troubleshooting Check No 17 Refer to P 141 Check No 19 Refer to P 142 A B C C F C F C F 09 12 class 122 252 64 147 113 235 18 24 class 92 198 70 158 77 171 Caution WARNING To cool the...

Страница 133: ...ssor 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 ot...

Страница 134: ...disconnecting connectors or parts may be damaged R23953 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...

Страница 135: ...g A rotation speed error occurs while the compressor is running An output overcurrent signal is fed from the output overcurrent detection circuit to the microcomputer If the error repeats the system i...

Страница 136: ...ge 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 overload Short circuit Check the...

Страница 137: ...US042113E Troubleshooting Part 6 Service Diagnosis 133 Reference Reference Reference Reference Check No 15 Refer to P 138 Check No 17 Refer to P 141 Check No 18 Refer to P 142 Check No 22 Refer to P 1...

Страница 138: ...ltimeter To check the thermistor soldered on a PCB disconnect the PCB from other PCB parts and measure the resistance between the both ends of soldered thermistor R6000517 When replacing the defective...

Страница 139: ...in specified range in the table below R6000511 5 3 Power Supply Waveform Check Check No 11 Measure the power supply waveform between No 1 and No 2 on the terminal strip and check the waveform disturba...

Страница 140: ...es not generate a latching sound in step 2 disconnect the connector and check the continuity using a multimeter 4 Check the continuity between the pins 5 1 5 2 5 3 5 4 between the pins 6 1 6 2 6 3 and...

Страница 141: ...way valve coil Replace the four way valve NO YES S80 voltage at 0 VDC with compressor on S80 voltage at 120 380 VDC for 3 sec after compressor starts and then at about 10 24 VDC Fig 1 Disconnect the...

Страница 142: ...ible to judge the cause of trouble easily and securely Connect an inverter analyzer as a quasi compressor instead of compressor and check the output of the inverter Operation Method Step 1 Be sure to...

Страница 143: ...6 LEDs lighting status of the inverter analyzer 1 If all the LEDs are lit uniformly the compressor is defective Replace the compressor 2 If the LEDs are not lit uniformly check the power module Refer...

Страница 144: ...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...

Страница 145: ...f 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...

Страница 146: ...O YES Is the air filter or indoor outdoor heat exchanger dirty Is the connection pipe deformed Is the stop valve open High Replace the compressor Open the stop valve Replace the pipe installed at the...

Страница 147: ...SiUS042113E Check Part 6 Service Diagnosis 143 09 12 class 18 24 class 1 2 3 4 Multimeter R24538 1 2 3 4 Multimeter...

Страница 148: ...vent electrical shock use a multimeter to check that the voltage between DC_P2 and DC_N2 is 50 V or less 18 24 class R6000790 To prevent an electrical shock use a multimeter to check that the voltage...

Страница 149: ...n 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 ref...

Страница 150: ...Check SiUS042113E 146 Part 6 Service Diagnosis 18 24 class R24539 DC DC W V U...

Страница 151: ...0 4 Field Settings 152 4 1 Temperature Display Switch 152 4 2 When 2 Units are Installed in 1 Room 152 4 3 Facility Setting cooling at low outdoor temperature 153 4 4 Drain Pan Heater 154 4 5 Service...

Страница 152: ...unit Details 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...

Страница 153: ...switch Press indoor unit ON OFF switch for at least 5 seconds The operation will start Forced cooling operation will stop automatically after about 15 minutes To stop the operation press indoor unit O...

Страница 154: ...tion 68 F to 75 F 20 C to 24 C in heating operation When operating the air conditioner in cooling operation in winter or heating operation in summer set it to the trial operation mode using the follow...

Страница 155: ...raining line is properly installed Water leakage System is properly grounded Electrical leakage Only specified wires are used for all wiring and all wires are connected correctly No operation or burn...

Страница 156: ...Remove the battery cover of the remote controller and cut the address jumper J4 2 Press the center of Temp button and Mode button on the remote controller at the same time 3 Select A address setting...

Страница 157: ...on range to 4 F 20 C In these cases the unit will stop operating if the outdoor temperature falls below 4 F 20 C restarting once the temperature rises above this level 1 Remove the top plate of the ou...

Страница 158: ...PCB if you cut a jumper unintentionally Jumpers are necessary for electronic circuit Improper operation may occur if you cut any of them 4 4 Drain Pan Heater In high humidity areas or heavy snow areas...

Страница 159: ...service diagnosis on normal mode The code indication changes every time the TIMER CANCEL button is pressed Service check mode In service check mode the left side number and the right side number can b...

Страница 160: ...oom temperature adjustment heating 0 Low 2 2 C 1 Low 1 1 C 2 Standard 0 C 3 High 1 1 C 4 High 2 2 C 2 Adjustment of indoor temperature thermistor in heating operation Used for adjustment of room tempe...

Страница 161: ...eld Settings Part 7 Trial Operation and Field Settings 157 Notes Set value on remote controller display may differ from the set value of indoor unit itself as remote controller is not synchronized wit...

Страница 162: ...de bridge Details 1 Wipe off the old silicone grease completely 2 Apply the silicone grease evenly See the illustrations below for examples of application 3 Tighten the screws of the power transistor...

Страница 163: ...SiUS042113E Part 8 Appendix 159 1 Piping Diagrams 160 1 1 Indoor Unit 160 1 2 Outdoor Unit 161 2 Wiring Diagrams 163 2 1 Indoor Unit 163 2 2 Outdoor Unit 165 3 Operation Limit 167 Part 8 Appendix...

Страница 164: ...Piping Diagrams SiUS042113E 160 Part 8 Appendix 1 Piping Diagrams 1 1 Indoor Unit FTXM09 12VVJU FTXM18VVJU FTXM24VVJU 4D132956 4D132992 4D132994...

Страница 165: ...SiUS042113E Piping Diagrams Part 8 Appendix 161 1 2 Outdoor Unit RXM09 12VVJU RXM18VVJU 3D131979 3D132216...

Страница 166: ...Piping Diagrams SiUS042113E 162 Part 8 Appendix RXM24VVJU 3D132217...

Страница 167: ...ams 2 1 Indoor Unit FTXM09 12VVJU A1P Control PCB A2P Power supply PCB A3P Display signal receiver PCB A4P Humidity sensor PCB A5P INTELLIGENT EYE sensor PCB A6P Wireless LAN connection PCB Refer to p...

Страница 168: ...s FTXM18 24VVJU A1P Control PCB A2P Power supply PCB A3P Display signal receiver PCB A4P Humidity sensor PCB A5P INTELLIGENT EYE sensor PCB A6P Wireless LAN connection PCB Refer to page 16 for Printe...

Страница 169: ...SiUS042113E Wiring Diagrams Part 8 Appendix 165 Note s 2 2 Outdoor Unit RXM09 12VVJU A1P Main PCB Refer to page 20 for Printed Circuit Board Connector Wiring Diagram C 3D129643B...

Страница 170: ...Wiring Diagrams SiUS042113E 166 Part 8 Appendix Note s RXM18 24VVJU A1P Main PCB A2P Service monitor PCB Refer to page 21 for Printed Circuit Board Connector Wiring Diagram C 3D129644B...

Страница 171: ...SiUS042113E Operation Limit Part 8 Appendix 167 3 Operation Limit RXM09 12 18 24VVJU 3D133582A...

Страница 172: ...ocal legislation z z 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 electri...

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