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Indoor Unit

Si04-402A

134

Removal Procedure

1.9

Removal of Electrical Box

Procedure

Warning

Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.

Step

Procedure

Points

Remove the front grille.

Discharge the static
electricity from your body
before touching the electrical
parts like signal receiver
PCB.
It may cause malfunction of
PCB.

1. Remove the electrical

box.

Loosen the screw of the
earth.

Loosen the screw of the
drip proof plate.

Содержание FTXG25CVMAW

Страница 1: ...Inverter Pair Wall Mounted Type C Series Applied Models z z z zInverter Pair Heat Pump Si04 402A...

Страница 2: ...ir Inverter Pair C Series C Series C Series C Series zHeat Pump Indoor Unit FTXG25CVMAW FTXG35CVMAW FTXG25CVMAS FTXG35CVMAS FTXG25CVMBW FTXG35CVMBW FTXG25CVMBS FTXG35CVMBS ATXG25CVMB ATXG35CVMB Outdoo...

Страница 3: ...Control for Indoor Units 20 1 5 Programme Dry Function 21 1 6 Automatic Operation 22 1 7 NIGHT SET Mode 23 1 8 INTELLIGENT EYE 24 1 9 Inverter Powerful Operation 25 1 10 Other Functions 26 2 Function...

Страница 4: ...C Motor or Related Abnormality 77 4 5 Thermistor or Related Abnormality Indoor Unit 79 4 6 Front Panel Open Close Fault 80 4 7 Signal Transmission Error between Indoor and Outdoor Unit 81 4 8 Signal T...

Страница 5: ...moval of Electrical Box 134 1 10 Removal of PCB 140 1 11 Removal of Heat Exchanger 146 1 12 Removal of Fan Rotor and Fan Motor 149 2 Outdoor Unit 152 2 1 Removal of Panels and Fan Motor 152 2 2 Remova...

Страница 6: ...lug socket before disassembling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shook If it is necessary to supply power to the equipmen...

Страница 7: ...der in a well ventilated place Using the welder in an enclosed room can cause oxygen deficiency Warning Warning Be sure to use parts listed in the service parts list of the applicable model and approp...

Страница 8: ...as leaks be sure to locate the leak and repair it before charging the refrigerant After charging refrigerant make sure that there is no refrigerant leak If the leak cannot be located and the repair wo...

Страница 9: ...and repair it if the equipment is not properly grounded Improper grounding can cause an electrical shock Be sure to measure the insulation resistance after the repair and make sure that the resistanc...

Страница 10: ...Si04 402A List of Functions 1 Part 1 Part 1 Part 1 Part 1 List of Functions List of Functions List of Functions List of Functions 1 List of Functions 2...

Страница 11: ...Horizontal Auto Swing Right and Left Worry Free Reliability Durability Auto Restart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display Comfort Airflow Mode Wiring Error Check 3 Step Ai...

Страница 12: ...Si04 402A Specifications 3 Part 2 Part 2 Part 2 Part 2 Specifications Specifications Specifications Specifications 1 Specifications 4...

Страница 13: ...ht Left Horizontal and Downward Right Left Horizontal and Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 14 0 14 0 14 0 14 Power Consumpt...

Страница 14: ...Left Horizontal and Downward Right Left Horizontal and Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 14 0 14 0 14 0 14 Power Consumptio...

Страница 15: ...t Horizontal and Downward Right Left Horizontal and Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 14 0 14 0 14 0 14 Power Consumption Ra...

Страница 16: ...t Left Horizontal and Downward Right Left Horizontal and Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 14 0 14 0 14 0 14 Power Consumpti...

Страница 17: ...izontal and Downward Right Left Horizontal and Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 14 0 14 0 14 0 14 Power Consumption Rated W...

Страница 18: ...t 3 Printed Circuit Board Printed Circuit Board Printed Circuit Board Printed Circuit Board Connector Wiring Diagram Connector Wiring Diagram Connector Wiring Diagram Connector Wiring Diagram 1 Printe...

Страница 19: ...ntrol PCB 5 S41 Connector for swing motor 6 S46 Connector for signal receiver PCB 7 S47 Connector for control PCB 8 S49 Connector for reduction motor front panel mechanism 9 S51 Connector for front pa...

Страница 20: ...gram Printed Circuit Board Connector Wiring Diagram 11 PCB Detail PCB 1 Control PCB indoor unit PCB 2 Signal Receiver PCB PCB 3 INTELLIGENT EYE sensor PCB S21 V1 S46 FU1 S32 R3319 S1 S41 S51 JB JA JC...

Страница 21: ...control PCB 3 S20 Connector for electronic expansion valve coil 4 S30 Connector for compressor motor 5 S40 Connector for overload protector 6 S70 Connector for fan motor 7 S80 Connector for four way v...

Страница 22: ...nnector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 13 PCB Detail PCB 1 Control PCB outdoor unit PCB 2 Filter PCB FU2 3 15A S30 HN3 HC3 S70 HC4 R3322 S40 LEDA S90 HL3 FU1 3 15A V1 S8...

Страница 23: ...Printed Circuit Board Connector Wiring Diagram Si04 402A 14 Printed Circuit Board Connector Wiring Diagram...

Страница 24: ...T Mode 23 1 8 INTELLIGENT EYE 24 1 9 Inverter Powerful Operation 25 1 10 Other Functions 26 2 Function of Thermistor 27 2 1 Heat Pump Model 27 3 Control Specification 28 3 1 Mode Hierarchy 28 3 2 Freq...

Страница 25: ...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 26: ...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 powe...

Страница 27: ...an Outline of 3 D Airflow Alternative repetition of vertical and horizontal swing motions enables uniform air conditioning of the entire room This function is effective for starting the air conditione...

Страница 28: ...Control Flow Timing Chart Opening the front panel fully Start Running Output of the D signal after the front panel starts moving Making the fan rotate when the flap passes over the fan banned area Op...

Страница 29: ...ing powerful operation fan operates H tap 50 70 rpm 2 Fan stops during defrost operation Automatic Air Flow Control for Heating The following drawing explains the principle for fan speed control for h...

Страница 30: ...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 temperature and humidity at a comfortab...

Страница 31: ...te controller setting temperature plus correction value correction value 0 deg 3 Operation ON OFF point and mode switching point are as follows Heating Cooling switching point Room temperature Main un...

Страница 32: ...SET circuit continues heating or cooling the room at the set temperature for the first one hour then automatically lowers the temperature setting slightly in the case of cooling or raises it slightly...

Страница 33: ...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 sifted 2 C from the set temperature COOL DRY 2 C higher HEAT 2...

Страница 34: ...y the set temperature is shifted by 1 C 1 9 Inverter Powerful Operation Outline In order to exploit the cooling and heating capacity to full extent operate the air conditioner by increasing the indoor...

Страница 35: ...tem operation there are times when the unit does not activate with this button 1 10 4 Titanium Apatite Photocatalytic Air Purifying Filter This filter combines the Air Purifying Filter and Titanium Ap...

Страница 36: ...ally the operating frequency drops or the operation must be halted 2 The discharge pipe thermistor is used for detecting the discharge thermistor disconnected C Indoor Heat Exchanger Thermistor DCN 1...

Страница 37: ...or 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 cooling operati...

Страница 38: ...ced 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 protec...

Страница 39: ...he frequency 3 Frequency management when other controls are functioning When frequency is drooping Frequency management is carried out only when the frequency droops For limiting lower limit Frequency...

Страница 40: ...ncy which is more than a certain fixed frequency for a certain fixed time Detail Starting Conditions 1 When starting compressor for heating 2 When the operating mode changes to cooling from heating 3...

Страница 41: ...one 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 continues until...

Страница 42: ...start with the indoor heat exchanger temperature after 2 sec from operation start Control in Each Zone 3 7 Heating Peak cut Control Outline Heat Pump Only During heating operation the signals being se...

Страница 43: ...mode 8 Fan control in the powerful mode Detail Fan OFF Control when Stopped Fan OFF delay for 60 seconds must be made when the compressor is stopped 3 9 Liquid Compression Protection Function 2 Outlin...

Страница 44: ...utdoor 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 accumulated tim...

Страница 45: ...scharge 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 ON Open...

Страница 46: ...sconnection of the Discharge Pipe Thermistor Outline Detect a disconnected discharge pipe thermistor by comparing the discharge pipe temperature with the condensation temperature If any is disconnecte...

Страница 47: ...ft 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 openin...

Страница 48: ...re three ways of control 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 i...

Страница 49: ...ltage is detected each time equipment operation starts Cooling room temperature indoor heat exchanger temperature 4 0 C outdoor heat exchanger temperature outdoor temperature 4 0 C Heating indoor heat...

Страница 50: ...uration 42 2 Instruction 43 2 1 Safety Precautions 43 2 2 Names of Parts 45 2 3 Preparation before Operation 48 2 4 AUTO DRY COOL HEAT FAN Operation 51 2 5 Adjusting the Air Flow Direction 53 2 6 POWE...

Страница 51: ...ver 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 in...

Страница 52: ...erly the refrigerant may be leaking so call your dealer When carrying out repairs accompanying adding refrigerant check the content of the repairs with our service staff Do not attempt to install the...

Страница 53: ...hocks Arrange the drain hose to ensure smooth drainage Incomplete draining may cause wetting of the building furniture etc Do not operate the air conditioner with wet hands Do not wash the indoor unit...

Страница 54: ...Si04 402A Instruction System Configuration 45 2 2 Names of Parts 4 Indoor Unit 15 14 18 12 13 17 1 3 4 6 2 11 16 5 7 8 9 10 With the panel closed...

Страница 55: ...itch is useful when the remote controller is missing 13 Room temperature sensor It senses the air temperature around the unit 14 Operation lamp green 15 TIMER lamp yellow page 18 16 INTELLIGENT EYE la...

Страница 56: ...button Press this button once to start operation Press once again to stop it 7 MODE selector button It selects the operation mode AUTO DRY COOL HEAT FAN page 10 8 SILENT button for OUTDOOR UNIT SILEN...

Страница 57: ...place the two old batteries together When the system is not used for a long time take the batteries out We recommend replacing once a year although if the remote controller display begins to fade or i...

Страница 58: ...holder Turn on the power breaker Turning on the power breaker will cause the panel and flap to open once and then close again This is a normal procedure CAUTION ATTENTION During operation i e when the...

Страница 59: ...is not operating If you are not going to use the air conditioner for a long period for example in spring or autumn turn the breaker OFF Use the air conditioner in the following conditions Operation o...

Страница 60: ...sing of the button advances the mode setting in sequence AUTO DRY COOL HEAT FAN 2 Press ON OFF button The operation lamp will light up and the panel will open To stop operation 3 Press ON OFF button a...

Страница 61: ...l parts of the room After the start of heating operation it takes some time before the room gets warmer In heating operation frost may occur on the outdoor unit and lower the heating capacity In that...

Страница 62: ...press SWING button once more The flap will stop moving To adjust the vertical blades louvers 3 Press SWING button is displayed on the LCD 4 When the louvers have reached the desired position press th...

Страница 63: ...ng three dimensional airflow circulates cold air which tends to collected at the bottom of the room and hot air which tends to collect near the ceiling throughout the room preventing areas of cold and...

Страница 64: ...which are not available is displayed on the LCD To cancel POWERFUL operation 2 Press POWERFUL button again NOTE Notes on POWERFUL operation In COOL and HEAT mode To maximize the cooling heating effect...

Страница 65: ...played on the LCD To cancel OUTDOOR UNIT SILENT operation 2 Press SILENT button again NOTE Note on OUTDOOR UNIT SILENT operation This function is available in COOL HEAT and AUTO modes This is not avai...

Страница 66: ...1 Press SENSOR button is displayed on the LCD To cancel the INTELLIGENT EYE operation 2 Press SENSOR button again EX When somebody in the room Normal operation The INTELLIGENT EYE lamp lights up When...

Страница 67: ...location the speed of passersby temperature range etc The sensor also mistakenly detects pets sunlight fluttering curtains and light reflected off of mirrors as passersby INTELLIGENT EYE operation wi...

Страница 68: ...tting by 10 minutes Holding down either button changes the setting rapidly 3 Press OFF TIMER button again The TIMER lamp lights up To cancel the OFF TIMER operation 4 Press CANCEL button The TIMER lam...

Страница 69: ...utes Holding down either button changes the setting rapidly 3 Press ON TIMER button again The TIMER lamp lights up To cancel ON TIMER operation 4 Press CANCEL button The TIMER lamp goes off To combine...

Страница 70: ...after washing 4 Attach the top front panel Place the revolving axes on either side of the top front panel into the holes and slowly close Press either side of the top front panel CAUTION Units Don t...

Страница 71: ...aner If the dust does not come off easily wash them with neutral detergent thinned with lukewarm water then dry them up in the shade It is recommended to clean the air filters every two weeks Titanium...

Страница 72: ...the outlets of the indoor unit and the outdoor unit Check that the drain comes smoothly out of the drain hose during COOL or DRY operation If no drain water is seen water may be leaking from the indoo...

Страница 73: ...when the air conditioner is in defrost operation In COOL or DRY mode Moisture in the air condenses into water on the cool surface of outdoor unit piping and drips Mists come out of the indoor unit Th...

Страница 74: ...RATION lamp flashes Are the air filters clean Is there anything to block the air inlet or the outlet of the indoor and the outdoor units Clean the air filters or take all obstacles away and turn the b...

Страница 75: ...the air conditioner may get foul after several seasons of use resulting in poor performance It is recommended to have periodical maintenance by a specialist aside from regular cleaning by the user Fo...

Страница 76: ...and Outdoor Unit 81 4 8 Signal Transmission Error between Indoor Unit and Wired Remote Controller 82 4 9 Unspecified Voltage between Indoor and Outdoor Unit 83 4 10 Outdoor Unit PCB Abnormality 84 4 1...

Страница 77: ...pment operation 2 When a signal transmission error occurs between the indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages Location of Operation La...

Страница 78: ...for heat pump model and cooling operation cannot be used when the outside temperature is below 10 C Diagnosis with remote controller indication 73 Equipment operates but does not cool or does not heat...

Страница 79: ...uced 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 cancel the code display h...

Страница 80: ...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 the error code pi pi The n...

Страница 81: ...th 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 7 Determine the e...

Страница 82: ...an motor or related abnormality 77 C4 Heat exchanger thermistor abnormality 79 C7 Front panel open close fault 80 C9 Room temperature thermistor abnormality 79 Outdoor Unit E1 Outdoor unit PCB abnorma...

Страница 83: ...ately 10 continuous seconds Supposed Causes Faulty indoor unit PCB Faulty connector connection Faulty terminal strip of indoor unit Troubleshooting Note Connector Nos vary depending on models Connecto...

Страница 84: ...according 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 indo...

Страница 85: ...ulation 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 passage...

Страница 86: ...used to determine abnormal fan motor operation Malfunction Decision Conditions When the detected rotation speed is less than 50 of the HH tap under maximum fan motor rotation demand Supposed Causes Op...

Страница 87: ...ate fan Turn off power supply and disconnect fan motor connector then turn power ON Check No 01 Check output of fan motor connector Is motor power voltage DC 200V generated Is motor control power volt...

Страница 88: ...han 120 ohms or below about 50 C more than 1 860 kohms Note The values vary slightly in some models Supposed Causes Faulty connector connection Faulty thermistor Faulty PCB Troubleshooting Check No 6...

Страница 89: ...the breaker off 2 Remove the decorative plate 3 Remove the slot in panel 4 Put the plug in or turn the breaker on Wait until the initialization finishes 5 Operate the unit by the indoor unit ON OFF sw...

Страница 90: ...l transmission error due to breaking of wire in the connection wires between the indoor and outdoor units wire No 2 Troubleshooting Check No 10 Refer to P 109 Check the outdoor unit s LED A Check the...

Страница 91: ...al Malfunction Decision Conditions When the data sent from the indoor unit cannot be received normally or when the content of the data is abnormal Supposed Causes Faulty remote controller cable Faulty...

Страница 92: ...sion Conditions The separate type and multi type are interconnected Supposed Causes Wrong models interconnected Wrong indoor unit PCB mounted Indoor unit PCB defective Wrong outdoor unit PCB mounted o...

Страница 93: ...an external factor Noise Momentary voltage drop Momentary power failure etc Unidentified information of the outdoor unit Damage of the EEPROM Faulty outdoor unit PCB Troubleshooting Turn on the power...

Страница 94: ...bleshooting Check No 4 Refer to P 104 Check No 5 Refer to P 105 Check No 6 Refer to P 106 Check No 11 Refer to P 109 Insert the thermistor in position Replace the discharge pipe thermistor Replace the...

Страница 95: ...posed 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 and W Inv...

Страница 96: ...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 97: ...ve 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 R2952 Caution Be sure to turn...

Страница 98: ...ked to see if they function within their normal ranges in the operating mode Malfunction Decision Conditions A following condition continues over 10 minute after operating 5 minutes Cooling dry operat...

Страница 99: ...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 100: ...r 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 4 Refer...

Страница 101: ...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 65 C The error is cl...

Страница 102: ...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 103: ...e of direct current before the compressor starts up is not within 0 5 4 5V Sensor output is converted into voltage When the value of direct voltage before the compressor starts up is under 50V Suppose...

Страница 104: ...disconnected Compressor itself defective Outdoor unit PCB defective Stop valve closed Input voltage out of specification Troubleshooting Check No 13 Refer to P 110 Replace the outdoor unit PCB Replace...

Страница 105: ...sion 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 106: ...ure 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 condenser...

Страница 107: ...or air thermistor Replace the following thermistor l Indoor heat exchanger thermistor Replace the outdoor unit PCB Replace the indoor unit PCB R4093 Caution Be sure to turn off power switch before con...

Страница 108: ...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 condition Continuou...

Страница 109: ...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 110: ...ues 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 this or any...

Страница 111: ...t heat exchanger thermistor 1 Replace the PCB 2 Replace the compressor Procedure complete R3318 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be o...

Страница 112: ...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 113: ...t 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 4...

Страница 114: ...nit PCB Replace the four way valve coil Replace the four way valve R3047 NO Four way valve coil Cooling dry No continuity Heating Continuity YES YES Four way valve coil resistance at 3k 0 5k NO S80 vo...

Страница 115: ...rs 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 R25 C 20k B 395...

Страница 116: ...er Change the installation location or direction Check the outside air temperature temperature of air taken in by the outdoor unit The outside air temperature shall be 43 C or lower Check the allowabl...

Страница 117: ...valve Replace the pipe installed at the site Clean Replace the compressor R1443 YES YES YES NO NO NO NO At the heat exchanger and air filter dirty Is the stop valve open Is the connection pipe deform...

Страница 118: ...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 119: ...r off and disconnect the connector S70 2 Make sure there is about DC 270 V between pins 4 and 7 3 With the system and the power still off reconnect the connector S70 4 Make a turn of the fan motor wit...

Страница 120: ...ade 125 1 6 Removal of Reduction Motor 126 1 7 Removal of Outlet Grille 129 1 8 Removal of Vertical Blades and Swing Motor 130 1 9 Removal of Electrical Box 134 1 10 Removal of PCB 140 1 11 Removal of...

Страница 121: ...er supplies before disassembling work Step Procedure Points 1 Features When the signal receiver catches a signal from the remote controller it produces beep sound and the operation lamp blinks 2 Remov...

Страница 122: ...en installing When installing insert 2 hooks of the air filter completely 3 Remove the air purifying filter The right and left air purifying filters are interchangeable 1 Titanium Apatite Photo cataly...

Страница 123: ...closed Slide the front panel side to side to release each axis Align the right and left axes with grooves in turn and insert them to the end when installing 1 Open the front panel to the horizontal po...

Страница 124: ...ate Caution Fit the hooks securely or the slot in panel gets caught in the decorative plate and the mechanism may break down 3 Lift and remove the slot in panel 4 When reassembling fit the axes of the...

Страница 125: ...the service cover inside and release the hooks 2 The service cover has 2 hooks on the right side and 4 hooks on the lower side When reassembling fit the right side hooks and insert the lower hooks whi...

Страница 126: ...it Removal Procedure 117 4 Pull down and remove the service cover of electrical box 5 Loosen the screw on the fixing plate 6 Push the white section on the terminal board and release the relay wires St...

Страница 127: ...Remove the front grille The front grille has no screw inside flaps 1 Loosen the 5 screws 2 The front grille has 3 hooks on the upper side Step Procedure Points B section B section A section A section...

Страница 128: ...eful not to cut your finger by the fins of the heat exchanger As for the horizontal blades fully opened position is easy to reassemble and remove 4 Release the both sides hooks 5 Pull the front grille...

Страница 129: ...supplies before disassembling work Step Procedure Points Remove the front grille 1 Remove the assembly of front panel mechanism 1 The back of the front grilles 2 Loosen the 2 screws of the assembly le...

Страница 130: ...t Removal Procedure 121 5 Loosen the 2 screws of the assembly right 6 Remove the assembly When reassembling insert the lower rack plate first The assembly has marks for right or left R Right L Left St...

Страница 131: ...e 1 Loosen the 2 screws of the left assembly cover 2 Hold the assembly hori zontally and release the hook When you demand small parts like cogs and rollers order a set of assembly Pay attention so as...

Страница 132: ...of the center cog 5 Loosen the 2 screws of the right assembly cover 6 Hold the assembly hori zontally and release the hook When you demand small parts like cogs and rollers order a set of assembly Pay...

Страница 133: ...dure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Remove the front grille 1 Remove the lamp cover 1 Release the 2 hoo...

Страница 134: ...ssembling work Step Procedure Points 1 Remove the horizontal blade The horizontal blade is single Installation procedure 1 Since key pattern hook is provided rotate the blade and fit it to the left pi...

Страница 135: ...tor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Remove the front grille 1 Remove the assembly of reduction...

Страница 136: ...Si04 402A Indoor Unit Removal Procedure 127 2 Remove the reduction motor 1 Release the hook and open the assembly 2 Layout of the harness of the motor Step Procedure Points...

Страница 137: ...Indoor Unit Si04 402A 128 Removal Procedure 3 Remove the cog large 4 Lift and remove the reduction motor 5 Pull and disconnect the connector for the motor Step Procedure Points...

Страница 138: ...Procedure Points Remove the front grille Remove the assembly of the reduction motor 1 Remove the outlet grille 1 Insert your finger into the hole and push up the hook to release it The outlet grille...

Страница 139: ...ing Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Remove the assembly of the outlet grille 1 Remove the vertical blades 1 Rele...

Страница 140: ...interlock rod from the vertical blades 4 Pull out the interlock rod from the swing motor side You cannot dismantle the caulking section 5 Push the hooks on the back of the vertical blades and remove...

Страница 141: ...or Unit Si04 402A 132 Removal Procedure 2 Remove the swing motor 1 Disconnect the connector for the swing motor 2 Loosen the screw and remove the swing motor 3 Strip the fixing tape Step Procedure Poi...

Страница 142: ...Si04 402A Indoor Unit Removal Procedure 133 4 Loosen the screw and pull out the swing motor 5 Disconnect the connector for the swing motor Step Procedure Points...

Страница 143: ...off all power supplies before disassembling work Step Procedure Points Remove the front grille Discharge the static electricity from your body before touching the electrical parts like signal receive...

Страница 144: ...proof plate When reassembling insert the left hook of the drip proof plate into the hem plate of the heat exchanger 4 Twist the electrical box cover to the right slightly to release the lower hook Li...

Страница 145: ...Disconnect the connector for the swing motors for horizontal and vertical blades S41 The harnesses for the horizontal swing motor and the vertical swing motor are united 8 Release the harness from th...

Страница 146: ...ease the harness from the hook 11 Disconnect the connector for the reduction motor front panel mechanism S49 12 Release the harness from the hook 13 Release the heat exchanger thermistor Pay attention...

Страница 147: ...the thermistor lead wire from the hook When reassembling hang the excessive lead wire of the heat exchanger thermistor on the hook 15 Layout of the lead wire for the heat exchanger thermistor 16 Loose...

Страница 148: ...Removal Procedure 139 17 Tilt the front part of the electrical box to the right slightly and pull it out When reassembling push the electrical box upright and make sure to fit the hook on the backside...

Страница 149: ...rning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Remove the electrical box 1 Remove the control PCB 1 Lift up the cover of...

Страница 150: ...Si04 402A Indoor Unit Removal Procedure 141 3 Loosen the screws of the earth 4 Release the front hook and the 2 upper hooks and remove the shelter Step Procedure Points...

Страница 151: ...Indoor Unit Si04 402A 142 Removal Procedure 5 Layout of the wiring 6 Loosen the screw and pull out the terminal board Step Procedure Points...

Страница 152: ...minals from the board Pb free soldering is adopted for PCB When replacing PCB use the particular solder and iron Black 1 White 2 Red 3 9 Cut the clamps Clamps should be used all the time Fix it as it...

Страница 153: ...Indoor Unit Si04 402A 144 Removal Procedure 11 Release the hooks and draw out the harness from the ditch 12 Loosen the 2 screws and remove the PCB 13 Control PCB Step Procedure Points...

Страница 154: ...emoval Procedure 145 2 Remove the signal receiver PCB 1 Release the hook with a flat screwdriver 2 Release the hook and remove the receiver unit 3 Release the 2 hooks and remove the signal receiver PC...

Страница 155: ...refrigerant R410A into refrigerant cycle Contaminating of air or other gas causes abnormal high pressure in refrigerating cycle and this results in pipe breakage or personal injuries Pay attention so...

Страница 156: ...rocedure 147 3 Remove the piping fixture plate 1 Release the 2 hooks with a flat screwdriver from the front side 2 Release the hook from the back side Lift up the lower part of the fixture plate and r...

Страница 157: ...he 2 screws on the left 3 Push the fixing hook on the right side and lift the heat exchanger Caution When removing or reinstalling heat exchanger be sure to wear protective gloves or wrap the heat exc...

Страница 158: ...dure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the right side plate 1 Loosen the 2 screws 2 Remove the ri...

Страница 159: ...Indoor Unit Si04 402A 150 Removal Procedure 3 Remove the bearing 1 Lift up the right part of the fan rotor and motor and slide them to the rightward to remove Step Procedure Points...

Страница 160: ...door Unit Removal Procedure 151 2 Hold the lower outside of the bearing Push it inwards and lift to release the hook 4 Remove the fan motor 1 Loosen the fixing screw and remove the fan motor Step Proc...

Страница 161: ...e 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 heat exchanger The stop valve cover is united with...

Страница 162: ...he panels 1 Loosen the 3 screws front right left and lift the top panel 2 Remove the drip proof plate 3 Disconnect the connector for fan motor S70 The fan motor is united with the front panel 4 Loosen...

Страница 163: ...4 hooks The fan motor is united with the front panel 3 Remove 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...

Страница 164: ...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 165: ...Outdoor Unit Si04 402A 156 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 166: ...Unit Removal Procedure 157 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 167: ...Outdoor Unit Si04 402A 158 Removal Procedure When reassembling make sure to fit the hook Step Procedure Points...

Страница 168: ...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 169: ...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 170: ...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 box 1 Remove the reactor...

Страница 171: ...it Si04 402A 162 Removal Procedure 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 bottom frame Step Proced...

Страница 172: ...es 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 Lift and remove the sou...

Страница 173: ...Si04 402A 164 Removal Procedure 4 Pull the sound blanket inner out Since the piping ports on the sound blanket are torn easily remove the blanket carefully 5 Pull the sound blanket bottom out Step Pro...

Страница 174: ...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 175: ...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 176: ...burn the heat exchanger fin Warning Since it may happen that refrigeration oil in the compressor will catch fire prepare wet cloth so as to extinguish fire immediately In case of the difficulty with...

Страница 177: ...Outdoor Unit Si04 402A 168 Removal Procedure Step Procedure Points 3 Heat up the brazed part of the suction side and disconnect 4 Lift the compressor up and remove it...

Страница 178: ...ng 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 removing the electric...

Страница 179: ...Outdoor Unit Si04 402A 170 Removal Procedure 4 Loosen the 4 screws 5 Undo the 3 hooks on the upper side 6 Lift and pull out the PCB Step Procedure Points...

Страница 180: ...Si04 402A Outdoor Unit Removal Procedure 171 7 Feature of the PCB S70 fan motor S80 four way valve S90 thermistor outdoor air heat exchanger discharge pipe Step Procedure Points...

Страница 181: ...Outdoor Unit Si04 402A 172 Removal Procedure...

Страница 182: ...Si04 402A Others 173 Part 8 Part 8 Part 8 Part 8 Others Others Others Others 1 Others 174 1 1 Test Run from the Remote Controller 174 1 2 Jumper Settings 175...

Страница 183: ...1 Measure the supply voltage and make sure that it falls in the specified range 2 Trial operation should be carried out in either cooling or heating mode 3 Carry out the test operation in accordance...

Страница 184: ...the drip proof plate 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 R2...

Страница 185: ...Others Si04 402A 176 Others...

Страница 186: ...Si04 402A Appendix 177 Part 9 Part 9 Part 9 Part 9 Appendix Appendix Appendix Appendix 1 Piping Diagrams 178 2 Wiring Diagrams 179...

Страница 187: ...EXCHANGER 7 0CuT 7 0CuT 4D045301A 9 5CuT 9 5CuT 7 0CuT 7 0CuT THERMISTOR DISCHARGE PIPE OUTDOOR UNIT MUFFLER PROPELLER FAN 7 9CuT 7 9CuT M COMPRESSOR VALVE FOUR WAY ON HEATING 9 5CuT 4 8CuT 4 8CuT THE...

Страница 188: ...813B 1 outdoor NOTE N MRCW MRM10 MRM20 MAGNETIC RELAY L 1 REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS indoor L LIVE IPM1 INTELLIGENT POWER MODULE L1 COIL L1R REACTOR M1C COMPRESSOR MOTOR M1F FAN...

Страница 189: ...Wiring Diagrams Si04 402A 180 Appendix...

Страница 190: ...esistance check 106 turning speed pulse input on the outdoor unit PCB check 110 comfort airflow mode 18 compressor 167 compressor lock 86 compressor overload 85 compressor protection function 31 conne...

Страница 191: ...ault 80 FU1 10 12 FU2 12 FU3 12 functions list of 2 fuse 10 12 G grille front grille 118 outlet grille 129 H H0 94 H6 95 H8 96 H9 97 HA 10 Hall IC 20 77 HC3 12 HC4 12 heat exchanger 148 heat exchanger...

Страница 192: ...iver PCB 11 145 problem symptoms and measures 69 programme dry function 21 propeller fan 154 R rack plate 120 reactor 161 reactor harnesses 159 reduction motor 10 80 126 reduction motor connector 137...

Страница 193: ...troubleshooting 64 73 troubleshooting with led indication 68 turning speed pulse input on the outdoor unit PCB check 110 U U0 101 U2 103 U4 81 U5 82 UA 83 unspecified voltage 83 V V1 10 12 V2 12 V3 1...

Страница 194: ...rrent detection 88 installation condition check 107 insufficient gas 101 insufficient gas control 39 INTELLIGENT EYE 24 INTELLIGENT EYE sensor PCB 11 inverter features 17 inverter powerful operation 2...

Страница 195: ...ow Charts turning speed pulse input on the outdoor unit PCB check 110 U unspecified voltage 83 W wiring diagrams ARXG25 35CVMB 179 ATXG25 35CVMB 179 FTXG25 35CVMAW S 179 FTXG25 35CVMBW S 179 RXG25 35C...

Страница 196: ...this brochure are subject to change without notice All rights reserved c Dealer Head Office Umeda Center Bldg 4 12 Nakazaki Nishi 2 chome Kita ku Osaka 530 8323 Japan Tokyo Office JR Shinagawa East B...

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