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SiUS04-702

Check

Service Diagnosis

175

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

Outdoor unit fan

system

functioning.

Go to Check No. 15.

Содержание FTXS09DVJU

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 293: ...Others SiUS04 702 282 Others...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 305: ...SiUS04 702 vi Index...

Страница 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...

Страница 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...

Страница 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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