Daikin FTXS09DVJU User Manual Download

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SiUS04 - 702

[Applied Models]

Inverter Pair : Heat Pump

Inverter Pair

Wall Mounted Type D-Series

Summary of Contents for FTXS09DVJU

Page 1: ...SiUS04 702 Applied Models z Inverter Pair Heat Pump Inverter Pair Wall Mounted Type D Series...

Page 2: ...SiUS04 702 Table of Contents i Inverter Pair D Series zHeat Pump Indoor Unit FTXS09DVJU FTXS12DVJU FTXS15DVJU FTXS18DVJU FTXS24DVJU Outdoor Unit RX09FVJU RX12FVJU RX15FVJU RX18FVJU RX24FVJU...

Page 3: ...for Indoor Units 22 1 4 Programme Dry Function 23 1 5 Automatic Operation 24 1 6 Thermostat Control 25 1 7 NIGHT SET Mode 26 1 8 INTELLIGENT EYE 27 1 9 HOME LEAVE Operation 29 1 10 Inverter POWERFUL...

Page 4: ...JU 65 2 3 FTXS15 18 24DVJU 90 Part 6 Service Diagnosis 115 1 Caution for Diagnosis 116 2 Problem Symptoms and Measures 118 3 Service Check Function 119 4 Troubleshooting 122 4 1 Error Codes and Descri...

Page 5: ...lle 209 2 3 Removal of the Horizontal Blades Vertical Blades 212 2 4 Removal of the Electrical Box PCB Swing Motor 215 2 5 Removal of the Heat Exchanger 223 2 6 Removal of the Fan Rotor Fan Motor 226...

Page 6: ...702 Table of Contents v Part 9 Appendix 283 1 Piping Diagrams 284 1 1 Indoor Units 284 1 2 Outdoor Units 285 2 Wiring Diagrams 287 2 1 Indoor Units 287 2 2 Outdoor Units 288 Index i Drawings Flow Char...

Page 7: ...er 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 shook If it is necessary to supp...

Page 8: ...trical 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 grounding when repairing the equipment in a humid or w...

Page 9: ...heat generation or fire 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 t...

Page 10: ...ent children from swallowing it If a child swallows the coin battery see a doctor immediately Warning Caution Installation of a leakage breaker is necessary in some cases depending on the conditions o...

Page 11: ...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 Cau...

Page 12: ...SiUS04 702 List of Functions 1 Part 1 List of Functions 1 List of Functions 2...

Page 13: ...start after Power Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display 3 D Airflow Wiring Error Check Comfort Airflow Mode Anticorrosion Treatment of Outdoor Heat Exchanger...

Page 14: ...SiUS04 702 Specifications 3 Part 2 Specifications 1 Specifications 4...

Page 15: ...t Left Horizontal and Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 Power Consumption Rated W 40 40 Power Factor 96 6 96 6 Tempe...

Page 16: ...Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 Power Consumption Rated W 40 40 Power Factor 96 6 96 6 Temperature Control Microc...

Page 17: ...l Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 20 Power Consumption Rated W 45 Power Factor 97 8 Temperature Control Microcomputer Control Dimens...

Page 18: ...t Board Connector Wiring Diagram 7 Part 3 Printed Circuit Board Connector Wiring Diagram 1 Printed Circuit Board Connector Wiring Diagram 8 1 1 FTXS09 12DVJU 8 1 2 FTXS15 18 24DVJU 10 1 3 RX09 12FVJU...

Page 19: ...otor Hall IC 4 S21 Connector for centralized control HA 5 S26 Connector for signal receiver PCB 6 S27 Connector for control PCB 7 S32 Connector for heat exchanger thermistor 8 S35 Connector for INTELL...

Page 20: ...Circuit Board Connector Wiring Diagram 9 PCB Detail PCB 1 Control PCB indoor unit PCB 2 Signal Receiver PCB PCB 3 INTELLIGENT EYE sensor PCB Control PCB V1 Fu1 S1 SW7 LED1 LED2 LED3 RTH1 S27 S7 S6 S2...

Page 21: ...lized control HA 5 S26 Connector for buzzer PCB 6 S28 Connector for signal receiver PCB 7 S32 Connector for heat exchanger thermistor 8 S35 Connector for Intelligent Eye sensor PCB 1 S29 Connector for...

Page 22: ...ector Wiring Diagram 11 PCB Detail PCB 1 Control PCB indoor unit PCB 2 Signal Receiver PCB PCB 3 Buzzer PCB PCB 4 Display PCB PCB 5 INTELLIGENT EYE sensor PCB S1 V1 FU1 S6 S8 S26 R2860 S28 S32 JC JB J...

Page 23: ...nector for control PCB 1 S10 Connector for filter PCB 2 S20 Connector for electronic expansion valve coil 3 S30 Connector for compressor motor 4 S40 Connector for overload protector 5 S70 Connector fo...

Page 24: ...nnector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 13 PCB Detail PCB 1 Filter PCB PCB 2 Control PCB outdoor unit FU3 20A S11 R6969 V3 V2 FU2 3 15A S30 HN3 HC3 S70 HC4 R6970 S40 LED...

Page 25: ...protector 6 S51 S101 Connector for service monitor PCB 7 S80 Connector for four way valve coil 8 S90 Connector for thermistors outdoor air heat exchanger and discharge pipe 9 S91 Connector for fin th...

Page 26: ...rcuit Board Connector Wiring Diagram 15 PCB Detail PCB 1 Control PCB outdoor unit E AC1 FU2 3 15A H1 H2 S32 S33 S71 S31 S91 R6971 S40 S20 S90 S101 S51 S80 S10 AC2 PCB 2 Power Supply PCB Service Monito...

Page 27: ...Printed Circuit Board Connector Wiring Diagram SiUS04 702 16 Printed Circuit Board Connector Wiring Diagram MID SPM S34 S72 R2868 S70 FU201 3 15A R2869 CN14 CN11 L1 L2...

Page 28: ...ols at Mode Changing Start up 37 3 4 Discharge Pipe Temperature Control 38 3 5 Input Current Control 39 3 6 Freeze up Protection Control 39 3 7 Heating Peak cut Control 40 3 8 Fan Control 40 3 9 Liqui...

Page 29: ...SiUS04 702 18 Function and Control 4 12 Electronic Expansion Valve Control 56 4 13 Malfunctions 59 4 14 Forced Operation Mode 60 4 15 Additional Function 60...

Page 30: ...plains the conversion principle Drawing of Inverter The following drawing shows a schematic view of the inverter principle Phase Description 1 The supplied AC power source is converted into the DC pow...

Page 31: ...air condition with a small room temperature variation Energy saving heating and cooling Once the set temperature is reached the energy saving operation enables to maintain the room temperature at low...

Page 32: ...the auto swing process for heating cooling dry and fan 09 12 Class 15 18 24 Class Outline of 3 D Airflow Alternative repetition of vertical and horizontal swing motions enables uniform air conditioni...

Page 33: ...s automatically controlled when the FAN setting button is set to automatic Note 1 During powerful operation fan operate H tap 50 90 rpm 2 Fan stops during defrost operation Automatic Air Flow Control...

Page 34: ...the room temperature at startup and the temperature set by the microcomputer is divided into two zones Then the unit operates in the dry mode with an appropriate capacity for each zone to maintain the...

Page 35: ...re 64 to 96 F 2 Main unit setting temperature equals remote controller setting temperature 3 Mode switching point are as follows Heating Cooling switching point Room temperature Main unit setting temp...

Page 36: ...rature difference is above 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 passe...

Page 37: ...GHT SET circuit continues heating or cooling the room at the set temperature for the first one hour then automatically raises the temperature setting slightly in the case of cooling or lowers it sligh...

Page 38: ...rocomputer doesn t have a signal from the sensor in 20 minutes it judges that nobody is in the room and operates the unit in temperature shifted 3 6 F from the set temperature COOL 3 6 F higher DRY 1...

Page 39: ...es so as to prevent this phenomena After this 40 minutes the prohibition of the thermostat off is cancelled and it can realize the conditions to conduct thermostat off depending on the room temperatur...

Page 40: ...d the function becomes effective when the operation is started If this button is pressed in powerful operation the powerful operation is reset and this function becomes effective The HOME LEAVE button...

Page 41: ...od of twenty minutes Ex Powerful operation in cooling mode Operation mode Fan speed Target set temperature COOL H tap 90 rpm 64 F DRY Dry rotating speed 50 rpm Normally targeted temperature in dry ope...

Page 42: ...Unit An ON OFF switch is provided on the front panel of the unit Use this switch when the remote controller is missing or if its battery has run out Every press of the switch changes from Operation t...

Page 43: ...if periodic maintenance is performed 1 11 5 Mold Proof Air Filter Prefilter The air filter net is impregnated with a safe odourless mould preventative to make the filter virtually immune to mould 1 11...

Page 44: ...e of the inner temperature of the compressor rises abnormally the operating frequency drops or the operation halts 2 The discharge pipe thermistor is used for detecting disconnection of the discharge...

Page 45: ...ce Detail For heat pump model There are following modes stop cooling includes drying heating include defrosting Note Unless specified otherwise an indoor dry operation command must be regarded as cool...

Page 46: ...3 Forced cooling 1 4 Indoor frequency command 2 Determine upper limit frequency Set a minimum value as an upper limit frequency among the frequency upper limits of the following functions Compressor...

Page 47: ...If the operating frequency is not change more than a certain fixed time adjust the frequency up and down according to the D value obtaining the fixed D value When the D value is small lower the freque...

Page 48: ...ting is stopped the delay switch of the four way valve must be carried out after the operation stopped Detail The OFF delay of four way valve Energize the coil for 160 sec after unit operation is stop...

Page 49: ...discharge pipe temperature is used as the compressor s internal temperature If the discharge pipe temperature rises above a certain level the operating frequency upper limit is set to keep this temper...

Page 50: ...on the drooping zone without change In the keep zone the frequency limit will remain In the return reset zone the frequency limit will be cancelled Limitation of current drooping and stop value accord...

Page 51: ...osting 2 Fan OFF delay when stopped 3 ON OFF control when cooling operation 4 Tap control when drooping function is working 5 Fan control when forced operation 6 Fan control in low noise mode 7 Fan co...

Page 52: ...the outdoor air temperature and heat exchanger temperature Under the conditions that the system is in heating operation 6 minutes after the compressor is started and more than 44 minutes of accumulat...

Page 53: ...l 1 Discharge pipe temperature control Detail The followings are the examples of control which function in each mode by the electronic expansion valve control R2833 Fully closed when power is turned O...

Page 54: ...mperature 3 11 6 Disconnection of the Discharge Pipe Thermistor Outline Detect a disconnected discharge pipe thermistor by comparing the discharge pipe temperature with the condensation temperature If...

Page 55: ...he shift 3 11 8 Target Discharge Pipe Temperature Control Obtain the target discharge pipe temperature from the indoor and outdoor heat exchanger temperature and adjust the electronic expansion valve...

Page 56: ...ontrol to detect insufficient gas I Detecting by power consumption If the power consumption is below the specified value and the frequency is higher than the specified frequency it is regarded as insu...

Page 57: ...oltage is detected each time equipment operation starts Cooling room temperature indoor heat exchanger temperature 7 2 F outdoor heat exchanger temperature outdoor temperature 7 2 F Heating indoor hea...

Page 58: ...rvice Detail For heat pump model There are following modes stop cooling includes drying heating include defrosting Note Unless specified otherwise an indoor dry operation command must be regarded as c...

Page 59: ...ime 1 3 Forced cooling 1 4 Indoor frequency command 2 Determine upper limit frequency Set a minimum value as an upper limit frequency among the frequency upper limits of the following functions Compre...

Page 60: ...t the frequency up and down according to the D value obtaining the fixed D value When the D value is small lower the frequency When the D value is large increase the frequency 3 Limit of frequency var...

Page 61: ...s from ON to OFF when the heating is stopped the delay switch of the four way valve must be carried out after the operation stopped Detail The OFF delay of four way valve Energize the coil for 150 sec...

Page 62: ...e If the discharge pipe temperature rises above a certain level the operating frequency upper limit is set to keep this temperature from going up further Detail Divide the Zone Management within the Z...

Page 63: ...e stop zone the compressor operation stops If a drooping current is continues for 1 0 second after rushing on the drooping zone the frequency will be 2 Hz drooping Repeating the above drooping continu...

Page 64: ...rolling start with the indoor heat exchanger temperature after 2 sec from operation start Control in Each Zone 4 7 Heating Peak cut Control Outline Heat Pump Only During heating operation the signals...

Page 65: ...be made when the compressor is stopped Tap Control in indoor outdoor unit silent operation 1 When Cooling Operation When the outdoor air temperature is lower than 99 F the fan tap must be set to L 2...

Page 66: ...the cooling cycle reverse cycle The defrosting time or outdoor heat exchanger temperature must be more than its fixed value when finishing Detail Conditions for Starting Defrost The starting condition...

Page 67: ...rol 1 Discharge pipe temperature control Detail The followings are the examples of control which function in each mode by the electronic expansion valve control R2833 Fully closed when power is turned...

Page 68: ...scharge temperature 4 12 6 Disconnection of the Discharge Pipe Thermistor Outline Detect a disconnected discharge pipe thermistor by comparing the discharge pipe temperature with the condensation temp...

Page 69: ...the shift 4 12 8 Target Discharge Pipe Temperature Control Obtain the target discharge pipe temperature from the indoor and outdoor heat exchanger temperature and adjust the electronic expansion valv...

Page 70: ...rrupted too 4 13 3 Insufficient Gas Control Outline If a power consumption is below the specified value in which the frequency is higher than the specified frequency it must be regarded as gas insuffi...

Page 71: ...eased 4 15 2 Voltage Detection Function Power supply voltage is detected each time equipment operation starts Item Forced Cooling Forced operation allowing conditions 1 The outdoor unit is not abnorma...

Page 72: ...SiUS04 702 Operation Manual 61 Part 5 Operation Manual 1 System Configuration 62 2 Instruction 63 2 1 Safety Precautions 63 2 2 FTXS09 12DVJU 65 2 3 FTXS15 18 24DVJU 90...

Page 73: ...r method of using it In order to meet this expectation of the users giving sufficient explanations taking enough time can be said to reduce about 80 of the requests for servicing However good the inst...

Page 74: ...ear apart and throw away plastic packaging bags so that children will not play with them Children playing with plastic bags face the danger of death by suffocation WARNING It is not good for health to...

Page 75: ...electrical shock injuries or death Arrange the drain hose to ensure smooth drainage Improper drainage may cause water damage to the building or it s furnishing Depending on the usage environment wate...

Page 76: ...SiUS04 702 Instruction Operation Manual 65 2 2 FTXS09 12DVJU 2 2 1 Names of Parts...

Page 77: ...Instruction SiUS04 702 66 Operation Manual...

Page 78: ...SiUS04 702 Instruction Operation Manual 67...

Page 79: ...Instruction SiUS04 702 68 Operation Manual 2 2 2 Preparation before Operation...

Page 80: ...SiUS04 702 Instruction Operation Manual 69...

Page 81: ...Instruction SiUS04 702 70 Operation Manual...

Page 82: ...SiUS04 702 Instruction Operation Manual 71 2 2 3 AUTO DRY COOL HEAT FAN Operation...

Page 83: ...Instruction SiUS04 702 72 Operation Manual...

Page 84: ...SiUS04 702 Instruction Operation Manual 73 2 2 4 Adjusting the Airflow Direction...

Page 85: ...Instruction SiUS04 702 74 Operation Manual...

Page 86: ...SiUS04 702 Instruction Operation Manual 75 2 2 5 POWERFUL Operation...

Page 87: ...Instruction SiUS04 702 76 Operation Manual 2 2 6 OUTDOOR UNIT QUIET Operation...

Page 88: ...SiUS04 702 Instruction Operation Manual 77 2 2 7 HOME LEAVE Operation...

Page 89: ...Instruction SiUS04 702 78 Operation Manual...

Page 90: ...SiUS04 702 Instruction Operation Manual 79 2 2 8 INTELLIGENT EYE Operation...

Page 91: ...Instruction SiUS04 702 80 Operation Manual...

Page 92: ...SiUS04 702 Instruction Operation Manual 81 2 2 9 TIMER Operation...

Page 93: ...Instruction SiUS04 702 82 Operation Manual...

Page 94: ...SiUS04 702 Instruction Operation Manual 83 2 2 10 Care and Cleaning...

Page 95: ...Instruction SiUS04 702 84 Operation Manual...

Page 96: ...SiUS04 702 Instruction Operation Manual 85...

Page 97: ...Instruction SiUS04 702 86 Operation Manual...

Page 98: ...SiUS04 702 Instruction Operation Manual 87...

Page 99: ...Instruction SiUS04 702 88 Operation Manual...

Page 100: ...SiUS04 702 Instruction Operation Manual 89 3P141693 1K...

Page 101: ...Instruction SiUS04 702 90 Operation Manual 2 3 FTXS15 18 24DVJU 2 3 1 Names of Parts...

Page 102: ...SiUS04 702 Instruction Operation Manual 91...

Page 103: ...Instruction SiUS04 702 92 Operation Manual...

Page 104: ...SiUS04 702 Instruction Operation Manual 93 2 3 2 Preparation before Operation...

Page 105: ...Instruction SiUS04 702 94 Operation Manual...

Page 106: ...SiUS04 702 Instruction Operation Manual 95...

Page 107: ...Instruction SiUS04 702 96 Operation Manual 2 3 3 AUTO DRY COOL HEAT FAN Operation...

Page 108: ...SiUS04 702 Instruction Operation Manual 97...

Page 109: ...Instruction SiUS04 702 98 Operation Manual 2 3 4 Adjusting the Airflow Direction...

Page 110: ...SiUS04 702 Instruction Operation Manual 99...

Page 111: ...Instruction SiUS04 702 100 Operation Manual 2 3 5 POWERFUL Operation...

Page 112: ...SiUS04 702 Instruction Operation Manual 101 2 3 6 OUTDOOR UNIT QUIET Operation...

Page 113: ...Instruction SiUS04 702 102 Operation Manual 2 3 7 HOME LEAVE Operation...

Page 114: ...SiUS04 702 Instruction Operation Manual 103...

Page 115: ...Instruction SiUS04 702 104 Operation Manual 2 3 8 INTELLIGENT EYE Operation...

Page 116: ...SiUS04 702 Instruction Operation Manual 105...

Page 117: ...Instruction SiUS04 702 106 Operation Manual 2 3 9 TIMER Operation...

Page 118: ...SiUS04 702 Instruction Operation Manual 107...

Page 119: ...Instruction SiUS04 702 108 Operation Manual 2 3 10 Care and Cleaning...

Page 120: ...SiUS04 702 Instruction Operation Manual 109...

Page 121: ...Instruction SiUS04 702 110 Operation Manual...

Page 122: ...SiUS04 702 Instruction Operation Manual 111 2 3 11 Troubleshooting...

Page 123: ...Instruction SiUS04 702 112 Operation Manual...

Page 124: ...SiUS04 702 Instruction Operation Manual 113...

Page 125: ...Instruction SiUS04 702 114 Operation Manual 3P141693 2K...

Page 126: ...30 4 7 OL Activation Compressor Overload 132 4 8 Compressor Lock 133 4 9 DC Fan Lock 135 4 10 Input Over Current Detection 136 4 11 Four Way Valve Abnormality 139 4 12 Discharge Pipe Temperature Contr...

Page 127: ...When a signal transmission error occurs between the indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages Location of Operation Lamp The Single Spl...

Page 128: ...n for Diagnosis Service Diagnosis 117 Troubleshooting with LED Indication The outdoor unit has one green LED LED A on the PCB The flashing green LED indicates normal condition of microcomputer operati...

Page 129: ...heat pump model and cooling operation cannot be used when the outdoor air temperature is below 14 F Diagnosis with remote controller indication 122 Equipment operates but does not cool or does not he...

Page 130: ...a continuous beep is produced The code indication changes in the sequence shown below and notifies with a long beep Note 1 A short beep and two consecutive beeps indicate non corresponding codes 2 To...

Page 131: ...the digit does not blink 2 Press the TEMP button Press TEMP or TEMP and change the digit until you hear the sound of beep or pi pi 3 Diagnose by the sound pi The number of tens does not accord with th...

Page 132: ...e sound pi The both numbers of tens and units do not accord with the error code pi pi The number of tens accords with the error code beep The both numbers of tens and units accord with the error code...

Page 133: ...temperature thermistor abnormality 129 129 Outdoor Unit E5 OL activation compressor overload 132 132 E6 Compressor lock 133 134 E7 DC fan lock 135 135 E8 Input over current detection 136 137 EA Four...

Page 134: ...ero cross detection in approximately 10 continuous seconds Supposed Causes Faulty indoor unit PCB Faulty connector connection Troubleshooting Note Connector Nos vary depending on models Connector conn...

Page 135: ...ccording to the temperature detected by the indoor unit heat exchanger thermistor Malfunction Decision Conditions High pressure control During heating operations the temperature detected by the indoor...

Page 136: ...umulation on the indoor unit heat exchanger YES YES Is there any short circuit Is it very dirty Is it very dirty Does it conform to the thermistor characteristic chart NO Provide sufficient air passag...

Page 137: ...e fan motor Detection error due to faulty indoor unit PCB Troubleshooting Check No 16 Refer to P 179 Rotate the fan by hand Check No 16 Check Hall IC Operate the fan Does it rotate NO Does it rotate s...

Page 138: ...Conditions When 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 Operation halt due...

Page 139: ...ck No 01 Check output of fan motor connector Is motor power voltage DC 200V generated Is motor control power voltage DC 15V generated Turn off power supply and disconnect fan motor connector then turn...

Page 140: ...F less than 120 or below about 58 F more than 1 860 k Note The values vary slightly in some models Supposed Causes Faulty connector connection Faulty thermistor Faulty PCB Troubleshooting Check No 06...

Page 141: ...hen the data sent from the outdoor unit cannot be received normally or when the content of the data is abnormal Supposed Causes Faulty outdoor unit PCB Faulty indoor unit PCB Indoor unit outdoor unit...

Page 142: ...PCB Locate the cause of the disturbance of the power supply waveform and correct it Is there any wiring error NO R6471 Is LED A flashing Is the voltage 0 V NO Check No 10 Check power supply waveform...

Page 143: ...shooting Check No 04 Refer to P 170 Check No 05 Refer to P 171 Check No 06 Refer to P 173 Check No 11 Refer to P 176 Insert the thermistor in position Replace the discharge pipe thermistor Replace the...

Page 144: ...normal Supposed Causes Compressor locked Compressor harness disconnected Troubleshooting Note If the model doesn t have SPM replace the outdoor unit PCB Turn off the power Disconnect the harnesses U V...

Page 145: ...ccurs 16 times Clearing condition Continuous run for about 5 minutes normal Supposed Causes Compressor locked Troubleshooting Turn off the power Disconnect the harnesses U V and W Inverter checker Par...

Page 146: ...for about 5 minutes normal Supposed Causes Fan motor breakdown Harness or connector disconnected between fan motor and PCB or in poor contact Foreign matters stuck in the fan Troubleshooting Check No...

Page 147: ...doesn t have SPM replace the outdoor unit PCB Replace the outdoor unit PCB Inverter checker Part No 1225477 Correct the power supply or replace the SPM Replace the outdoor unit PCB R4698 Caution Be su...

Page 148: ...input with the compressor running continues for 2 5 seconds CT input Above 20 A The system will be shut down if the error occurs 16 times Clearing condition Continuous run for about 5 minutes normal...

Page 149: ...above its stop level NO YES Normal NO YES Any LED off YES NO Check with the inverter checker Turn off the power and reconnect the harnesses Turn on the power again and get restarted Turn off the power...

Page 150: ...r are checked to see if they function within their normal ranges in the operating mode Malfunction Decision Conditions A following condition continues over 10 minutes after operating 5 minutes Cooling...

Page 151: ...ower switch before connect or disconnect connector or parts damage may be occurred Four way valve coil disconnected loose YES YES NO Functioning NO Check No 11 Check the refrigerant line Malfunctionin...

Page 152: ...ee if they function within their normal ranges in the operating mode Malfunction Decision Conditions A following condition continues over 1 minute after operating 10 minutes Cooling dry operation room...

Page 153: ...wer switch before connect or disconnect connector or parts damage may be occurred Four way valve coil disconnected loose YES YES NO Functioning NO Check No 11 Check the refrigerant line Malfunctioning...

Page 154: ...xchanger or outdoor air temperature thermistor defective Outdoor unit PCB defective Water mixed in the local piping Electronic expansion valve defective Stop valve defective Troubleshooting Check No 0...

Page 155: ...inute compressor running time total time Supposed Causes Refrigerant shortage Four way valve malfunctioning Discharge pipe thermistor defective heat exchanger or outdoor temperature thermistor defecti...

Page 156: ...ure being sensed by the heat exchanger thermistor exceeds the limit Malfunction Decision Conditions Activated when the temperature being sensed by the heat exchanger thermistor rises above 149 F The e...

Page 157: ...the connector or fan motor lead wires Replace the heat exchanger thermistor Replace PCB Replace the electronic expansion valve or coil Replace the PCB Change the air outlet grille position Change the...

Page 158: ...d by the heat exchanger thermistor exceeds the limit Malfunction Decision Conditions Activated when the temperature being sensed by the heat exchanger thermistor rises above 140 F Deactivated when the...

Page 159: ...the connector or fan motor lead wires Replace the heat exchanger thermistor Replace PCB Replace the electronic expansion valve or coil Replace the PCB Change the air outlet grille position Change the...

Page 160: ...lay cable disconnected Compressor itself defective Outdoor unit PCB defective Stop valve closed Input voltage out of specification Troubleshooting Check No 13 Refer to P 177 Replace the outdoor unit P...

Page 161: ...Compressor itself defective Outdoor unit PCB defective Stop valve closed Input voltage out of specification Troubleshooting Check No 13 Refer to P 177 Replace the outdoor unit PCB outdoor unit fan Rep...

Page 162: ...ision Conditions The compressor running frequency is below 52 Hz The input current is also below 0 5 A If this error repeats 4 times the system will be shut down The error counter will reset itself if...

Page 163: ...ion Conditions The compressor running frequency is below 55 Hz and the CT input is below 0 1 V The input current is also below 1 25 A If this error repeats 4 times the system will be shut down The err...

Page 164: ...itch before connect or disconnect connector or parts damage may be occurred Running current as shown at right with relay cable 1 or 2 YES Current guideline 2 sec Time Rising with increasing frequency...

Page 165: ...ature Malfunction Decision Conditions The thermistor input is above 4 96 V or below 0 04 V with the power on Error J3 is judged if the discharge pipe thermistor temperature is smaller than the condens...

Page 166: ...exchanger thermistor z Outdoor air thermistor Replace the following thermistor z Indoor heat exchanger thermistor Replace the outdoor unit PCB Replace the indoor unit PCB R4702 Caution Be sure to turn...

Page 167: ...ing the radiation fin thermistor with the compressor off Malfunction Decision Conditions With the compressor off the radiation fin temperature is above 176 F Reset is made when the temperature drops b...

Page 168: ...tion Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Error again or outdoor unit fan activated YES z Fin thermistor NO Slightly dirty Check No 0...

Page 169: ...adiation fin temperature with the compressor on is above 194 F If a radiation fin temperature rise takes place 4 times successively the system will be shut down The error counter will reset itself if...

Page 170: ...or the power transistor Replace the fan motor Correct the connectors and fan motor leads Replace the outdoor unit PCB Clean up the radiation fin R5475 Caution Be sure to turn off power switch before c...

Page 171: ...mpressor is running An output over current input is fed from the output over current detection circuit to the microcomputer The system will be shut down if the error occurs 255 times Clearing conditio...

Page 172: ...ave been disconnected and reconnected for part replacement for example and the system is interrupted by an output over current take the following procedure Error again NO YES NO YES Voltage as rated Y...

Page 173: ...ning An output over current input is fed from the output over current detection circuit to the microcomputer The system will be shut down if the error occurs 16 times Clearing condition Continuous run...

Page 174: ...ected for part replacement for example and the system is interrupted by an output over current take the following procedure Error again NO YES NO YES Voltage as rated YES NO Short circuit or breakage...

Page 175: ...te The values are different from model to model Gas shortage detection II If a gas shortage error takes place 4 times successively the system will be shut down The error counter will reset itself if t...

Page 176: ...t heat exchanger thermistor 1 Replace the PCB 2 Replace the compressor Procedure complete R4706 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be o...

Page 177: ...t current A Hz x Compressor running frequency Voltage However when the status of running frequency 55 Hz is kept on for a certain time Note The values are different from model to model Gas shortage de...

Page 178: ...exchanger thermistor 1 Replace the PCB 2 Replace the compressor Procedure complete R4777 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred...

Page 179: ...Continuous run for about 10 minutes normal Supposed Causes Supply voltage not as specified Over voltage detection circuit defective PAM control part s defective Troubleshooting Note If the model does...

Page 180: ...ses Supply voltage not as specified Over voltage detector or DC voltage detection circuit defective PAM control part s defective Short circuit inside the fan motor winding Troubleshooting Check the su...

Page 181: ...ct that connector and check the conductivity using a tester Check the conductivity between pins 1 3 and 6 and between pins 2 4 and 5 If there is no conductivity between the pins the EV coil is faulty...

Page 182: ...tdoor unit PCB Replace the four way valve coil Replace the four way valve R6974 NO Four way valve coil Cooling dry No continuity Heating Continuity YES YES Four way valve coil resistance at 3k 0 5k NO...

Page 183: ...e four way valve coil Replace the four way valve R5220 NO Four way valve coil Cooling dry No continuity Heating Continuity YES YES Four way valve coil resistance at 1500 ohms NO S80 voltage at DC 220...

Page 184: ...s on the PCB and measure the resistance of each thermistor using tester The relationship between normal temperature and resistance is shown in the graph and the table below Thermistor R77 F 20k B 3950...

Page 185: ...the outdoor unit The outside air temperature shall be 109 F or lower Check the allowable dimensions of the air suction and discharge area Is the air flow blocked by obstacles or winds blowing in the o...

Page 186: ...75 5 1 7 Outdoor Unit Fan System Check Check No 09 Check the outdoor unit fan system Reconnect R2857 Outdoor unit fan running YES Fan motor lead wire connector disconnected YES NO NO Outdoor unit fan...

Page 187: ...eform disturbance near the zero cross sections circled in Fig 2 5 1 9 Inverter Units Refrigerant System Check Check No 11 Fig 1 Fig 2 Refrigerant system check Check for gas leaks See the section on in...

Page 188: ...er turning off the circuit breaker z If you cannot avoid to touch a live part make sure that the power transistor s supply voltage is below 50 V using the tester z For the UVW make measurements at the...

Page 189: ...being applied 1 Stop the operation first and then the power off and disconnect the connector S70 2 Make sure there is about DC 320 V between pins 4 and 7 3 With the system and the power still off reco...

Page 190: ...er ON operation OFF and the connector connected check the following Output voltage of about 5 V between pins 1 and 3 Generation of 3 pulses between pins 2 and 3 when the fan motor is operating Failure...

Page 191: ...Check SiUS04 702 180 Service Diagnosis...

Page 192: ...val of the Electrical Box PCB Swing Motor 215 2 5 Removal of the Heat Exchanger 223 2 6 Removal of the Fan Rotor Fan Motor 226 3 RX09 12FVJU 229 3 1 Removal of Panels and Fan Motor 229 3 2 Removal of...

Page 193: ...after turning off all power supplies before disassembling work Step Procedure Points 1 External features If ON OFF button is kept pushing for 5 seconds a forced cooling operation will be carried out f...

Page 194: ...l insert air filter along the guide 3 Opening and shutting front panel 1 Hook a finger onto the projection part provided on the both sides of the unit s panel and open up the panel to the position hig...

Page 195: ...US04 702 184 Removal Procedure 2 Remove front panel from the unit 3 When restoring the air filter make sure that the projection parts on the panel are in the guide groove and then shut the panel Step...

Page 196: ...rning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Opening and closing of service cover 1 Remove a service cover mounting s...

Page 197: ...uipped in the existing models are not provided 2 Disengage the 2 hooks on the upper part In case that the hooks are not pressed from above remove the front panel and then remove the grille while pushi...

Page 198: ...Removal Procedure 187 3 The front grille can be removed in a manner to pull out the upper part forward and lift up the lower part When restoring the grille Make sure whether each hook is set as it wa...

Page 199: ...after turning off all power supplies before disassembling work Step Procedure Points 1 Remove horizontal blade 1 Lift horizontal blade to open position Screw stoppers inside the flap which were equipp...

Page 200: ...f the blade to the tip while rotating it 2 Restore the 2 fixed parts of the horizontal blade onto the hook 2 Removal of vertical blade 1 Disengage the vertical blade s joint from the fixed plate 2 Rem...

Page 201: ...ore disassembling work Step Procedure Points Remove front grill 1 Remove electrical box 1 Disconnect the connection wires 2 Disconnect connectors S1 and S7 of fan motor Pay attention to the direction...

Page 202: ...FTXS09 12DVJU Removal Procedure 191 5 Remove a screw on the terminal board The electrical box can be removed instead of disengaging the terminal board 6 Remove a screw on the electrical box Step Proce...

Page 203: ...FTXS09 12DVJU SiUS04 702 192 Removal Procedure 7 Pull up the electrical box forward to remove A hook is provided on the behind Step Procedure Points...

Page 204: ...emoval of PCB 1 Remove the shelter 2 Disengage the front plate of the electrical box Disengage the knobs by pushing the 2 hooks at the top and the bottom 3 Sliding to the left the front part of the el...

Page 205: ...FTXS09 12DVJU SiUS04 702 194 Removal Procedure 4 Disengage the four knobs on the back of the signal receiver PCB 5 Signal receiver PCB Step Procedure Points...

Page 206: ...1 To remove swing motor assembly remove 2 screws Manual adjusting for the vertical blades Provide a supporter so that the joint link will not drop off in case the horizontal blade assembly is removed...

Page 207: ...0A into refrigerating cycle Mixing of air or other gas causes abnormal temperature rise in refrigerating cycle and this results in pipe rupture or personal injuries Pay attention so that the residual...

Page 208: ...TXS09 12DVJU Removal Procedure 197 4 Disengage the hooks of the pipe retainer on the back 5 Pull auxiliary pipe forward to an angle of 10 to 20 degrees Be careful to prevent pipe deformation Step Proc...

Page 209: ...metrically placed in the right and the left Lifting the heat exchanger slightly upward to the right the left hook comes to be disengaged easily 7 Lift and remove heat exchanger Caution When removing o...

Page 210: ...ait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Disconnect drain hose The drain pan is integrated with the bottom plate 2 Pull out the dra...

Page 211: ...FTXS09 12DVJU SiUS04 702 200 Removal Procedure 4 Push the drain plug into the right by Allen wrench Push it into the inner part firmly Step Procedure Points...

Page 212: ...1 7 Removal of Fan Rotor and Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Remove heat exchanger 1...

Page 213: ...FTXS09 12DVJU SiUS04 702 202 Removal Procedure 2 Disengage hook 3 Loosen the hexagon head set screw on the fan rotor Step Procedure Points...

Page 214: ...SiUS04 702 FTXS09 12DVJU Removal Procedure 203 4 Remove the motor and fan rotor 5 Remove a screw on the left side plate Step Procedure Points...

Page 215: ...Removal Procedure 6 Disengage a hook from the backward 7 Since the fan bearing is made of rubber push it strongly off from the inside The bearing can be removed just as the left side plate is attache...

Page 216: ...nutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Features When the signal receiver catches a signal from the remote controller it produces beep soun...

Page 217: ...ghtly by the center knob and then pull it out downwards The right and left filters are interchangeable Insert the air filters along grooves when installing Set the air filters with displaying FRONT on...

Page 218: ...Remove an air purifying filter with photocatalytic deodorizing function 1 Push up the bottom of an air purifying filter to undo the hooks 2 on lower 3 on upper and take the filter out The right and le...

Page 219: ...l 1 While opening the front panel further than it stops release both axes and remove the front panel Slide the front panel side to side to release each axis Align the right and left axes with grooves...

Page 220: ...disassembling work Step Procedure Points 1 Remove the service cover 1 Loosen the screw and remove the service cover by the knob No field setting switch is inside it You can remove the front grille wi...

Page 221: ...l Procedure 2 Undo the three hooks on the top of the front grille The front grille has three hooks on the center and the both sides of the upper part Refer to the removal procedure in a reverse way wh...

Page 222: ...4DVJU Removal Procedure 211 3 Pull the upper part of the front grille out and lift the lower part up and then remove the front grille Make sure that all the hooks are placed securely when reassembling...

Page 223: ...all power supplies before disassembling work Step Procedure Points 1 Remove the horizontal blades 1 Open the horizontal blades It has no fixing screws inside blades though previous models had 2 Undo t...

Page 224: ...ion procedure 1 Since key pattern hook is provided rotate the blades and fit it to the right pivot first 2 Fit the blades to the center and left pivots 2 Remove the vertical blades 1 Undo the right an...

Page 225: ...FTXS15 18 24DVJU SiUS04 702 214 Removal Procedure 3 Pull the vertical blades rightwards and remove it Step Procedure Points...

Page 226: ...f the Electrical Box PCB Swing Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the front grille...

Page 227: ...that not to lose the clip for the thermistor 4 Remove the electrical box 1 Disconnect the 4 connection wirings Loosen the screw and remove the terminal strip board You can remove the electrical box wi...

Page 228: ...cedure 217 3 Disconnect the connectors for swing motor S6 S8 4 Loosen the fixing screw of the electrical box 5 Dislocate the electrical box to the left and undo the back hook The electrical box has a...

Page 229: ...emoval Procedure 6 Pull the electrical box out towards you Hook the back hook of the electrical box when reassembling 7 Loosen the screw on the electrical box Screw M4 16 8 Push the shelter up and und...

Page 230: ...upper side and then undo the hooks on the lower side Release the hooks on the upper side 10 Cut the clamp 11 The receiver units contain four PCBs Remove each PCB with releasing hooks Disconnect every...

Page 231: ...s before 5 Remove the control PCB 1 Undo the 2 hooks on the lower side and then the 2 hooks on the upper side Remove the control PCB 2 Control PCB indoor unit S1 connector for the fan motor S21 HA S26...

Page 232: ...Procedure 221 6 Remove the swing motor for horizontal blades 1 Remove the screw of the swing motor 7 Remove the swing motor for vertical blades 1 Release the swing axis on the right side Releasing th...

Page 233: ...S15 18 24DVJU SiUS04 702 222 Removal Procedure 2 Loosen the 2 screws and detach the swing motor assembly 3 Loosen the 2 screws and remove the swing motor Six hooks hold the assembly Step Procedure Poi...

Page 234: ...than the specified refrigerant R 410A into refrigerant cycle Contaminating of air or other gas causes abnormal high pressure in refrigerating cycle and this results in pipe breakage or personal injur...

Page 235: ...emove the indoor unit 1 Detach the indoor unit from the installation plate 3 Remove the piping fixture 1 Release the hook on the upper side of the piping fixture on the back of the unit 4 Remove the h...

Page 236: ...xing hooks on the right side and release 4 Pull the heat exchanger to the front side and undo the hooks completely and then lift it Caution When removing or reinstalling heat exchanger be sure to wear...

Page 237: ...s or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the right side panel 1 Loosen the 2 screws You can remove the fan rotor without detaching the ri...

Page 238: ...n reassembling the fan rotor provide as much as 3 16inch of play between the side face of the rotor and the bottom frame 2 When reassembling the fan motor align the end of the connector with the heigh...

Page 239: ...15 18 24DVJU SiUS04 702 228 Removal Procedure 2 Loosen the 2 screws and remove the mounting plate for the bearing 3 The bearing is made of rubber Push it inwards firmly and remove it Step Procedure Po...

Page 240: ...edure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Features Take care not to cut your finger by the fins of the hea...

Page 241: ...ocedure The stop valve cover is united with the shelter When reassembling make sure to fit the 5 hooks 2 Remove the panels 1 Loosen the 3 screws front right left and lift the top panel 2 Remove the dr...

Page 242: ...e connector for fan motor S70 The fan motor is united with the front panel 4 Loosen the 5 screws of the front panel 5 Undo the hooks Pull and remove the front panel The front panel has 4 hooks The fan...

Page 243: ...the fan motor The screw has reverse winding 1 Unscrew the washer fitted nut M10 of the propeller fan with a spanner 2 Remove the propeller fan Align mark of the propeller fan with D cut section of th...

Page 244: ...the bell mouth to undo the hooks Remove the bell mouth 4 Loosen the fixing hooks and release the lead wire Put the lead wire through the back of the motor when reassembling so as not to be entangled...

Page 245: ...RX09 12FVJU SiUS04 702 234 Removal Procedure 5 Loosen the 4 screws to remove the fan motor M4 16 DC fan motor 6 Loosen the 2 screws to remove the fan motor fixing frame Step Procedure Points...

Page 246: ...2FVJU Removal Procedure 235 4 Remove the right side panel 1 Loosen the 2 screws on the rear side 2 Loosen the 3 screws on the right side 3 Loosen the screw and lift the connection port to remove Step...

Page 247: ...RX09 12FVJU SiUS04 702 236 Removal Procedure When reassembling make sure to fit the hook Step Procedure Points...

Page 248: ...ies before disassembling work Step Procedure Points Remove the top panel Disconnect the connector for fan motor 1 Remove the electrical box 1 Disconnect the 2 reactor harnesses 2 Disconnect the relay...

Page 249: ...dure 4 Release the discharge pipe thermistor Pay attention so as not to lose the clip for thermistor 5 Release the heat exchanger thermistor Pay attention so as not to lose the clip 6 Lift and remove...

Page 250: ...Partition Plate Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Remove the outer panels Remove the electrical...

Page 251: ...rocedure 2 Remove the partition plate 1 Loosen the 2 screws 2 The partition plate has a hook on the lower side Lift and pull the partition plate to remove When reassembling fit the lower hook into the...

Page 252: ...off all power supplies before disassembling work Step Procedure Points Remove the outer panels Remove the electrical box 1 Remove the sound blanket 1 Untie the strings and open the sound blanket 2 Lif...

Page 253: ...S04 702 242 Removal Procedure 3 Lift and remove the sound blanket top 4 Pull the sound blanket inner out Since the piping ports on the sound blanket are torn easily remove the blanket carefully Step P...

Page 254: ...SiUS04 702 RX09 12FVJU Removal Procedure 243 5 Pull the sound blanket bottom out Step Procedure Points...

Page 255: ...turning off all power supplies before disassembling work Step Procedure Points 1 Remove the peripheries Remove the four way valve and the sheets of putty so as not to burn them 1 Remove the terminal c...

Page 256: ...tube cutter 4 Heat up the brazed part and withdraw the piping with pliers Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries Be careful so as not to br...

Page 257: ...ic gas Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries Be careful so as not to burn the compressor terminals or the name plate Be careful so as not t...

Page 258: ...or restoration 1 Restore the piping by non oxidation brazing 2 It is required to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat Fo...

Page 259: ...RX09 12FVJU SiUS04 702 248 Removal Procedure 4 Lift the compressor up and remove it Step Procedure Points...

Page 260: ...re after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the PCB You can remove the PCB when you disconnect the read wires on the terminal board without removin...

Page 261: ...RX09 12FVJU SiUS04 702 250 Removal Procedure 3 Release the earth terminal 4 Loosen the 4 screws 5 Undo the 3 hooks on the upper side Step Procedure Points...

Page 262: ...re 251 6 Lift and pull out the PCB 7 Feature of the PCB S70 fan motor S80 four way valve S90 thermistor outdoor air heat exchanger discharge pipe See page 13 for detail Step Procedure Points FU2 3 15A...

Page 263: ...and Plates Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the panels and plates Take care not to cut...

Page 264: ...FVJU Removal Procedure 253 2 Loosen the 4 screws and remove the discharge grille The front grille has 4 hooks Slide the discharge grille upwards and remove it 3 Loosen the 6 screws of the front panel...

Page 265: ...ush the front panel and undo the hook Lift the clamp plate and remove it 5 Undo the right side hook and then the left side hooks Remove the front panel Lift the front panel and remove it while pushing...

Page 266: ...Removal Procedure 255 Lift the front panel and undo the left side hooks Fit the left side of the front panel first when installing 2 Remove the stop valve cover 1 Loosen the screw of the stop valve co...

Page 267: ...RX15 18 24FVJU SiUS04 702 256 Removal Procedure 2 Pull down the stop valve cover to undo the hooks and remove it The stop valve cover has 6 hooks Step Procedure Points R2687...

Page 268: ...ling work Step Procedure Points Remove the top panel and the front panel 1 Remove the electrical box cover This procedure is not necessary to remove the propeller fan only 1 Loosen the screw on the ba...

Page 269: ...X15 18 24FVJU SiUS04 702 258 Removal Procedure 2 Remove the fan motor 1 Disconnect the connector for fan motor S70 2 The illustration shows arrangement of the fan motor lead wire Step Procedure Points...

Page 270: ...rocedure 259 3 Unscrew the washer fitted nut M10 of the propeller fan with a spanner Align mark of the propeller fan with D cut section of the motor shaft when reassembling 4 Remove the 4 screws from...

Page 271: ...24FVJU SiUS04 702 260 Removal Procedure 5 Pull the fan motor out Put the lead wire through the back of the motor when reassembling so as not to be entangled with the propeller fan Step Procedure Point...

Page 272: ...g off all power supplies before disassembling work Step Procedure Points Remove the top panel and the front panel 1 Remove the right side panel Terminal strip number black 1 power supply white 2 power...

Page 273: ...iUS04 702 262 Removal Procedure 3 Loosen the fixing screw of the electrical box Insert the two hooks of the lower part and the one hook of the upper back when reassembling Step Procedure Points R5485...

Page 274: ...cable way board 3 Disconnect the harnesses from the power supply PCB HL black to the terminal strip HE2 yellow green to the terminal strip earth HAC1 black from the control PCB AC1 HE1 yellow green f...

Page 275: ...front side S20 electronic expansion valve S40 overload protector S80 four way valve S90 thermistors discharge pipe outdoor air heat exchanger 5 Loosen the screw of the control PCB 6 Undo the 2 hooks...

Page 276: ...the control PCB S10 to the terminal strip AC2 to the terminal strip 8 Disconnect the connectors S51 to the service monitor PCB S101 to the service monitor PCB 9 Disconnect the connectors S31 to the S...

Page 277: ...SPM S32 to CN11 of the SPM S33 to S34 of the MID S40 overload protector S51 to S52 of the service monitor PCB S71 to S72 of the MID S80 four way valve S90 thermistors discharge pipe outdoor air heat...

Page 278: ...SiUS04 702 RX15 18 24FVJU Removal Procedure 267 12 Release the clamp by pliers 13 Disconnect the reactor harness Step Procedure Points R2715...

Page 279: ...X15 18 24FVJU SiUS04 702 268 Removal Procedure 14 Pull the clamp and draw the thermistor harness out from the back of the electrical box 15 Loosen the screw of the electrical box Step Procedure Points...

Page 280: ...SiUS04 702 RX15 18 24FVJU Removal Procedure 269 16 Release the clamp of the four way valve harness 17 Lift the electrical box and remove it Step Procedure Points R2720...

Page 281: ...t 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Remove the electrical box 1 Remove the partition plate 1 Release the clamp by pliers 2 Loosen...

Page 282: ...SiUS04 702 RX15 18 24FVJU Removal Procedure 271 3 Lift the partition plate and remove it 4 Loosen the screw Slide the reactor and remove it from the partition plate Step Procedure Points...

Page 283: ...to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Disconnect the harness of each thermistor 2 Release the discharge pipe thermistor Pay...

Page 284: ...outdoor heat exchanger thermistor Clamps should be always available Fix it as it was before 4 Remove the sound blanket side outer Since the piping ports on the sound blanket side outer are torn easil...

Page 285: ...702 274 Removal Procedure 6 Remove the sound blanket top lower 7 Remove the sound blanket side inner Since the piping ports on the sound blanket side inner are torn easily remove the blanket carefully...

Page 286: ...n brazing Braze it quickly when no nitrogen gas can be used 2 It is required to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat For...

Page 287: ...f putty Before working make sure that the refrigerant is empty in the circuit 3 Heat up the two brazed parts of the electronic expansion valve and disconnect Be sure to apply nitrogen replacement when...

Page 288: ...wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the terminal cover 2 Disconnect the lead wires of the compressor Be careful so as...

Page 289: ...arise toxic gas Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries Be careful so as not to burn the compressor terminals or the name plate 5 Heat up th...

Page 290: ...SiUS04 702 Others 279 Part 8 Others 1 Others 280 1 1 Test Run from the Remote Controller 280 1 2 Jumper Settings 281...

Page 291: ...eration in accordance with the Operation Manual to ensure that all functions and parts such as louver movement are working properly The air conditioner requires a small amount of power in its standby...

Page 292: ...ate 4 tabs 4 Cut the address jumper JA on the control PCB Wireless remote controller 1 Slide the front cover and take it off 2 Cut the address jumper J4 1 2 2 Jumper Setting R2871 R2872 Jumper On indo...

Page 293: ...Others SiUS04 702 282 Others...

Page 294: ...SiUS04 702 Appendix 283 Part 9 Appendix 1 Piping Diagrams 284 1 1 Indoor Units 284 1 2 Outdoor Units 285 2 Wiring Diagrams 287 2 1 Indoor Units 287 2 2 Outdoor Units 288...

Page 295: ...ROSS FLOW FAN REFRIGERANT FLOW FAN MOTOR ON HEAT EXCH THERMISTOR INDOOR UNIT COOLING HEATING 9 32CuT 1 4CuT 3 8CuT HEAT EXCHANGER 1 4CuT 1 4CuT 4D047158 M CuT FIELD PIPING FIELD PIPING 1 4CuT CROSS FL...

Page 296: ...ITH 3 8CuT 1 4CuT VALVE LIQUID STOP VALVE GAS STOP FIELD PIPING FIELD PIPING 3 8CuT 1 4CuT REFRIGERANT FLOW COOLING HEATING 3D047143B 3 8CuT 3 8CuT 9 32CuT 9 32CuT THERMISTOR DISCHARGE PIPE OUTDOOR UN...

Page 297: ...E PORT MOTOR OPERATED VALVE LIQUID STOP VALVE FIELD PIPING 1 2 CuT FIELD PIPING 1 4 CuT REFRIGERANT FLOW COOLING HEATING 3D047141B OUTDOOR UNIT 1 2CuT 1 2CuT 5 16CuT 5 16CuT 5 16CuT 5 16CuT 5 16CuT 5...

Page 298: ...LY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN CAUTION FIELD WIRING 2 3 1 outdoor 3D033599G CONTROLLER WIRELESS REMOTE PCB4 PCB3 PCB5 INTELLIGENT EYE LED1 H1P R1T SENSOR t S37 S38 LE...

Page 299: ...3 SA1 S70 7 1 FU201 3 15A FIELD WIRING GRN YLW 30A FU1 S1W GRN YLW outdoor BRN YLW W U BRN V ORG WHT RED BLU BLU N RED X11A Z2C S2 S4W PCB1 PCB2 PRINTED CIRCUIT BOARD S101 4 S31 ORG 9 YLW RED MRM20 Y1...

Page 300: ...check 175 power supply waveforms check 176 power transistor check 177 thermistor resistance check 173 turning speed pulse input on the outdoor unit PCB check 178 check No 01 170 check No 04 170 check...

Page 301: ...tor connector 190 231 fan rotor 201 227 fan speed control 22 fan speed setting 8 10 281 filter air filter 182 air purifying filter with photocatalytic deodorizing function 32 filter PCB 13 forced cool...

Page 302: ...on 132 ON OFF button on indoor unit 31 operation lamp 116 outdoor air temperature thermistor 155 outdoor heat exchanger thermistor 33 outdoor unit fan system check 175 output over current detection 16...

Page 303: ...266 S72 14 266 S8 10 217 S80 12 14 237 264 266 S90 12 14 264 266 S91 14 265 266 self diagnosis digital display 32 sensor malfunction detection 45 59 service check function 119 service cover 185 209 se...

Page 304: ...SiUS04 702 Index v U U0 164 166 U2 168 169 U4 130 V V1 8 10 12 V2 12 V3 12 14 varistor 8 10 12 14 vertical blade 189 213 voltage detection function 46 60 W wide angle louvres 21 wiring diagrams 287...

Page 305: ...SiUS04 702 vi Index...

Page 306: ...nciple 19 function of thermistor heat pump model 33 H Hall IC check 179 heating peak cut control 40 53 high pressure control in cooling 145 HOME LEAVE operation 29 I indoor unit PCB abnormality 123 in...

Page 307: ...door units 130 SPM 16 T target discharge pipe temperature control 44 58 thermistor or related abnormality indoor unit 129 thermistor or related abnormality outdoor unit 154 thermistor resistance check...

Page 308: ...ollton TX75006 info daikinac com www daikinac com AMERICAS Specifications designs and other content appearing in this brochure are current as of March 2007 but subject to change without notice SiUS04...

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