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Indoor Unit

SiBE041010

116

Removal Procedure

Disconnect the flare nut
for liquid piping with 2
wrenches.

2. Remove the indoor unit.

When the pipings are
disconnected, protect the
both openings from entering
moisture.

Remove the indoor unit
from the installation
plate.

Unfasten the hook of
the piping fixture on the
back of the unit.

Step

Procedure

Points

(R8018)

Gas piping

Liquid piping

(R8019)

Auxiliary piping

Piping fixture

(R8038)

(R8039)

Содержание SiBE041010

Страница 1: ...SiBE041010 Applied Models Inverter Pair Heat Pump Inverter Pair Wall Mounted Type J Series...

Страница 2: ...Table of Contents Inverter Pair Wall Mounted Type J Series zHeat Pump Indoor Units FTX20JV1B ATX20JV1B FTX25JV1B ATX25JV1B FTX35JV1B ATX35JV1B Outdoor Units RX20JV1B ARX20JV1B RX25JV1B ARX25JV1B RX35J...

Страница 3: ...mostat Control 20 1 7 NIGHT SET Mode 21 1 8 ECONO Operation 22 1 9 Inverter POWERFUL Operation 23 1 10 Other Functions 24 2 Function of Thermistor 25 3 Control Specification 26 3 1 Mode Hierarchy 26 3...

Страница 4: ...ock 68 4 11 DC Fan Lock 69 4 12 Input Overcurrent Detection 70 4 13 Four Way Valve Abnormality 71 4 14 Discharge Pipe Temperature Control 73 4 15 High Pressure Control in Cooling 74 4 16 Compressor Sy...

Страница 5: ...nd Blanket 132 2 5 Removal of Four Way Valve 134 2 6 Removal of Compressor 137 Part 8 Others 138 1 Others 139 1 1 Trial Operation 139 1 2 Field Settings 140 1 3 Application of Silicon Grease to a Powe...

Страница 6: ...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 7: ...ectrical 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...

Страница 8: ...at 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 ter...

Страница 9: ...vent 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...

Страница 10: ...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 Ca...

Страница 11: ...SiBE041010 List of Functions 1 Part 1 List of Functions 1 Functions 2...

Страница 12: ...Durability Auto Restart after Power Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display 3 D Airflow COMFORT AIRFLOW Operation Wiring Error Check Comfort Control Auto Fan S...

Страница 13: ...SiBE041010 Specifications 3 Part 2 Specifications 1 Specifications 4...

Страница 14: ...Air Direction Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 0...

Страница 15: ...Direction Control Right Left Horizontal Downward Air Filter 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...

Страница 16: ...ction Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 0 18 Power...

Страница 17: ...Direction Control Right Left Horizontal Downward Air Filter 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...

Страница 18: ...iBE041010 8 Printed Circuit Board Connector Wiring Diagram Part 3 Printed Circuit Board Connector Wiring Diagram 1 Printed Circuit Board Connector Wiring Diagram 9 1 1 Indoor Unit 9 1 2 Outdoor Unit 1...

Страница 19: ...er thermistor 4 S200 Connector for fan motor 5 S403 Connector for adaptor PCB option 6 H1 H2 H3 FG Connector for terminal board 7 V1 Varistor 8 JA Address setting jumper JB Fan speed setting when comp...

Страница 20: ...iring Diagram SiBE041010 10 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB 1 Control PCB PCB 2 Display PCB FU1 H1 H3 V1 H2 FG S200 LED A S32 S26 S6 JA JC JB S403 2P206569 1 S27 SW1 Sold...

Страница 21: ...V 7 V2 V3 Varistor 1 S10 Connector for filter PCB 2 S20 Connector for electronic expansion valve coil 3 S40 Connector for overload protector 4 S70 Connector for fan motor 5 S80 Connector for four way...

Страница 22: ...Diagram SiBE041010 12 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB 1 Filter PCB PCB 2 Main PCB HR1 S11 HN2 HL2 V2 E1 E2 V3 AC2 AC1 S FU3 3P206706 1 S90 LED A S10 J5 S70 S40 S20 HL3 F...

Страница 23: ...er POWERFUL Operation 23 1 10 Other Functions 24 2 Function of Thermistor 25 3 Control Specification 26 3 1 Mode Hierarchy 26 3 2 Frequency Control 27 3 3 Controls at Mode Changing Start up 29 3 4 Dis...

Страница 24: ...g 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 power source for the present 2 The DC pow...

Страница 25: ...tioning A fine adjustment is integrated to keep the room temperature constant Energy saving heating and cooling Once the set temperature is reached the energy saving operation enables to maintain the...

Страница 26: ...ating Mode During heating mode the large flap directs airflow downwards to spread the warm air to the entire room Wide Angle Louvers The louvers made of elastic synthetic resin provide a wide range of...

Страница 27: ...cally controlled within this range when the FAN setting button is set to automatic Cooling The following drawing explains the principle of fan speed control for cooling Heating On heating mode the fan...

Страница 28: ...om temperature at start up and the target temperature 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 humidi...

Страница 29: ...ontroller Tc determines the target temperature Tt Tc 18 30 C 2 The target temperature Tt is calculated as Tt Tc C where C is the correction value C 0 C 3 Thermostat ON OFF point and mode switching poi...

Страница 30: ...rence returns to the zone C after being in the zone A The system resumes from defrost control in any zones except A The operation turns on in any zones except A The monitoring time has passed while th...

Страница 31: ...hen automatically raises the target temperature slightly in the case of cooling or lowers it slightly in the case of heating This prevents excessive cooling in summer and excessive heating in winter t...

Страница 32: ...CONO button When this function is activated the maximum capacity decreases The remote controller can send the ECONO command when the unit is in COOL HEAT DRY or AUTO operation This function can only b...

Страница 33: ...inutes Ex POWERFUL operation in cooling mode Operation mode Fan speed Target temperature COOL H tap 80 rpm 18 C DRY DRY rotating speed 80 rpm Lowered by 2 5 C HEAT H tap 80 rpm 31 C FAN H tap 80 rpm A...

Страница 34: ...refers to the following table Forced operation mode Forced operation mode can be started by pressing the ON OFF button for 5 to 9 seconds while the unit is not operating Refer to Forced operation mode...

Страница 35: ...pipe temperature used in place of the inner temperature of the compressor rises abnormally the operating frequency becomes lower or the operation halts 2 The discharge pipe thermistor is used for det...

Страница 36: ...tail There are following modes stop cooling includes drying heating include defrosting Note Unless specified otherwise an indoor dry operation command is regarded as cooling operation Air conditioner...

Страница 37: ...frequency among the frequency upper limits of the following functions Compressor protection input current discharge pipe temperature heating peak cut freeze up protection defrost 3 Determine lower li...

Страница 38: ...change for more than a certain fixed time the frequency is adjusted according to the D value When the D value is small the frequency is lowered When the D value is large the frequency is increased 3...

Страница 39: ...e heating is stopped as the four way valve coil switches from ON to OFF the OFF delay switch of the four way valve is carried out after the operation stopped Detail OFF delay switch of four way valve...

Страница 40: ...the discharge pipe temperature rises above a certain level the upper limit of frequency is set to keep this temperature from going up further Detail FCG 1 FCG 2 FCG 3 TCG 1 TCG 2 TCG 3 58 72 90 180 18...

Страница 41: ...g zone The upper limit of the compressor frequency is defined as operation frequency 2 Hz After this the output frequency is pulled down by 2 Hz every second until it reaches the keep zone Keep zone T...

Страница 42: ...or heat exchanger temperature determines the frequency upper limit to prevent abnormal high pressure Detail R11997 Reset zone Up zone Keep zone Drooping zone Stop zone 0 C 7 C 9 C 11 C 13 C Reference...

Страница 43: ...n speed of the outdoor fan is reduced by the command of the indoor outdoor quiet operation 7 Fan control for POWERFUL operation The rotation speed of the outdoor fan is increased while the POWERFUL op...

Страница 44: ...anger temperature The system is in heating operation The compressor operates for 6 minutes More than 28 minutes of accumulated time pass since the start of the operation or ending the previous defrost...

Страница 45: ...ve control when the discharge pipe thermistor is disconnected Feedback Control 1 Discharge pipe temperature control Detail The followings are the examples of control which function in each mode by the...

Страница 46: ...g the discharge pipe temperature with the condensation temperature If the discharge pipe thermistor is disconnected the electronic expansion valve opens according to the outdoor temperature and the op...

Страница 47: ...pening is adjusted so that the actual discharge pipe temperature becomes close to the target discharge pipe temperature Indirect SH superheating control using the discharge pipe temperature The electr...

Страница 48: ...compressor 3 12 3 Refrigerant Shortage Control Outline I Detecting by power consumption If the power consumption is below the specified value and the frequency is higher than the specified frequency...

Страница 49: ...oor unit is not operating The forced operation is allowed when the above both conditions are met Start Press the forced operation ON OFF button SW1 on the indoor unit for 5 seconds Command frequency 5...

Страница 50: ...peration Manual 1 System Configuration 41 2 Operation Manual 42 2 1 Remote Controller 42 2 2 AUTO DRY COOL HEAT FAN Operation 43 2 3 Adjusting the Airflow Direction 45 2 4 POWERFUL Operation 47 2 5 EC...

Страница 51: ...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 52: ...once again to stop it 7 MODE selector button It selects the operation mode AUTO DRY COOL HEAT FAN page 10 8 FAN setting button It selects the airflow rate setting 9 SWING button Ajusting the Airflow D...

Страница 53: ...etting 4 Press TEMPERATURE adjustment button DRY or FAN mode AUTO or COOL or HEAT mode The temperature setting is not variable Set to the temperature you like 2 3 1 4 5 FTK FTX C The air conditioner o...

Страница 54: ...lower outdoor temperatures If the heating effect is insufficient it is rec ommended to use another heating appliance in combination with the air conditioner The heat pump system heats the room by circ...

Страница 55: ...find a knob on the left side and the right side blades 1 2 3 4 is displayed on the LCD and the flaps will begin to swing When the flaps have reached the desired position press SWING button once more...

Страница 56: ...given to POWERFUL operation ATTENTION 45 5 45 5 15 45 50 0 0 0 In DRY mode or COOL mode Upper limit SWING Lower limit SWING Upper limit SWING Lower limit SWING Upper limit SWING Lower limit SWING Stop...

Страница 57: ...fect in any operation mode You can get the maximum capacity To start POWERFUL operation Then the system automatically operates again with the previous settings which were used before POWERFUL operatio...

Страница 58: ...hever button is pressed last 1 2 ECONO operation is a function which enables efficient operation by lowering the maximum power con sumption value To cancel ECONO opera tion ECONO Operation can only be...

Страница 59: ...can also use OFF TIMER and ON TIMER in combination To use OFF TIMER operation Press TIMER Setting button until the time setting reaches the point you like Every pressing of either button increases or...

Страница 60: ...timer again After a breaker has turned OFF After a power failure After replacing batteries in the remote controller 2 1 3 4 Example Present time 11 00 p m The unit operating OFF TIMER at 0 00 a m ON...

Страница 61: ...between Indoor and Outdoor Unit 65 4 8 Outdoor Unit PCB Abnormality 66 4 9 OL Activation Compressor Overload 67 4 10 Compressor Lock 68 4 11 DC Fan Lock 69 4 12 Input Overcurrent Detection 70 4 13 Fou...

Страница 62: ...ice of the indoor or outdoor unit is activated or when the thermistor malfunctions 2 When a signal transmission error occurs between the indoor and outdoor units In either case conduct the diagnostic...

Страница 63: ...eating operation cannot be used when the outdoor temperature is 20 C or higher and cooling operation cannot be used when the outdoor temperature is below 10 C Diagnose with remote controller indicatio...

Страница 64: ...wn below Note 1 A short beep pi and two consecutive beeps pi pi indicate non corresponding codes 2 To return to the normal mode hold the timer cancel button down for 5 seconds When the remote controll...

Страница 65: ...and change the figure until you hear the sound of beep or pi pi 3 Diagnose by the sound pi The figure of the ten s place does not accord with the error code pi pi The figure of the ten s place accord...

Страница 66: ...oth figures of the ten s and one s place accord with the error code 7 Determine the error code The figures indicated when you hear the beep sound are error code Error codes and description Refer to pa...

Страница 67: ...mality 63 C9 Room temperature thermistor or related abnormality 63 Outdoor Unit E1 Outdoor unit PCB abnormality 66 E5 OL activation compressor overload 67 E6 Compressor lock 68 E7 DC fan lock 69 E8 In...

Страница 68: ...on of connector Troubleshooting Note Check the following connector Check the combination of the indoor and outdoor unit OK Check the connection of connectors See Note Correct the connection OK Error r...

Страница 69: ...ng heating operation the temperature detected by the indoor heat exchanger thermistor is used for the heating peak cut control operation halt outdoor fan stop etc Malfunction Decision Conditions Freez...

Страница 70: ...n the air filter Clean the indoor heat exchanger Replace the indoor unit PCB Replace the thermistor Does it conform to the thermistor characteristic chart Check the air filter Check the dust accumulat...

Страница 71: ...fan motor operation Malfunction Decision Conditions The detected rotation speed does not reach the demanded rotation speed of the target tap and is less than 50 of the maximum fan motor rotation speed...

Страница 72: ...e OK Turn the power on again Check No 18 Check output of the indoor unit PCB Is the motor control voltage 15 VDC generated Check No 19 Check the indoor unit PCB for pulse input Is the rotation pulse g...

Страница 73: ...mpressor operation Supposed Causes Disconnection of connector Defective thermistor Defective indoor unit PCB Troubleshooting Check No 06 Refer to P 92 C4 Indoor heat exchanger thermistor C9 Room tempe...

Страница 74: ...pply waveform Check the voltage of the connection wires on the indoor terminal board between No 1 and No 3 and between No 2 and No 3 YES YES Replace the indoor unit PCB Locate the cause of the disturb...

Страница 75: ...ng of connection wires Wrong indoor unit PCB or outdoor unit PCB mounted Defective indoor unit PCB Defective outdoor unit PCB Troubleshooting R11707 Caution NO YES YES YES NO NO Check the code numbers...

Страница 76: ...een PCBs Noise Momentary fall of voltage Momentary power failure etc Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged...

Страница 77: ...ctive stop valve Troubleshooting Check No 04 Refer to P 90 Check No 05 Refer to P 91 Check No 06 Refer to P 92 Check No 11 Refer to P 95 R11999 Caution YES NG Discharge pipe thermistor NO OK OK NG Ref...

Страница 78: ...f the power Disconnect the harnesses U V and W R8399 Caution NO YES YES NO NO YES Check with the inverter checker Turn off the power and reconnect the harnesses Turn on the power again and restart the...

Страница 79: ...es Disconnection of the fan motor Foreign matters stuck in the fan Defective fan motor Defective outdoor unit PCB Troubleshooting Check No 15 Refer to P 96 R11708 Caution YES YES NO YES NO NO YES NO T...

Страница 80: ...g or disconnecting connectors or parts may be damaged An input overcurrent may result from wrong internal wiring If the wires have been disconnected and reconnected for part replacement for example an...

Страница 81: ...function within their normal ranges in each operation mode Malfunction Decision Conditions A following condition continues over 10 minutes after operating for 5 minutes Cooling Dry room temp indoor he...

Страница 82: ...ay valve defective or dust clogged Reconnect in position Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged R11710 Four way valve coil d...

Страница 83: ...frigerant shortage Defective four way valve Water mixed in refrigerant Defective stop valve Defective outdoor unit PCB Troubleshooting Check No 04 Refer to P 90 Check No 06 Refer to P 92 Check No 11 R...

Страница 84: ...r thermistor Defective outdoor unit PCB Troubleshooting Check No 04 Refer to P 90 Check No 06 Refer to P 92 Check No 07 Refer to P 93 Check No 08 Refer to P 93 Check No 09 Refer to P 94 R11897 Caution...

Страница 85: ...verted to voltage value The DC voltage before compressor start up is below 50 V Supposed Causes Broken or disconnection of harness Defective outdoor unit PCB Troubleshooting Caution Be sure to turn of...

Страница 86: ...ircuit Malfunction Decision Conditions The compressor fails to start in about 15 seconds after the compressor run command signal is sent If the error repeats 16 times the system is shut down Reset con...

Страница 87: ...O YES YES NO YES YES Check No 29 Check the short circuit of the diode bridge Check with the inverter checker Turn off the power Disconnect the harnesses U V and W Turn on the power Check the electroly...

Страница 88: ...put current Malfunction Decision Conditions The compressor running frequency is above 52 Hz The input current is also below 0 1 A If the error repeats 4 times the system is shut down Reset condition C...

Страница 89: ...with the power on J3 error is judged if the discharge pipe temperature is lower than the heat exchanger temperature Supposed Causes Disconnection of the connector for the thermistor Defective thermis...

Страница 90: ...llowing thermistors Outdoor temperature thermistor Discharge pipe thermistor Outdoor heat exchanger thermistor Cooling Outdoor heat exchanger temperature Heating Indoor heat exchanger temperature Repl...

Страница 91: ...unction Decision Conditions With the compressor off the radiation fin temperature is above C The error is cleared when the radiation fin temperature drops below C To cool the electrical components the...

Страница 92: ...NO YES Turn off the power and turn it on again Check the radiation fin temperature Check No 07 Check the installation condition Radiation fin dirty Above C Check No 09 Check the outdoor fan or relate...

Страница 93: ...ion fin temperature with the compressor on is above C The error is cleared when the radiation fin temperature drops below C If the error repeats the system is shut down Reset condition Continuous run...

Страница 94: ...S Above C Radiation fin dirty Check No 09 Check the outdoor unit fan or related Error displayed again Has PCB been replaced Check if the silicon grease applied properly on the radiation fin If not app...

Страница 95: ...rs while the compressor is running A speed error occurs while the compressor is running An output overcurrent signal is fed from the output overcurrent detection circuit to the microcomputer If the er...

Страница 96: ...o 07 Check the installation condition Check with the inverter checker Turn off the power and disconnect the harnesses U V and W Turn off the power and reconnect the harnesses Turn on the power again a...

Страница 97: ...g conditions continue for 7 minutes Input current input voltage output frequency Output frequency Refrigerant shortage detection II The following conditions continue for 80 seconds Opening of the elec...

Страница 98: ...ipe flare or replace the union Check the power transistor harness for looseness Correct it as required Also replace the cracked pipe Check the pipes for improper contact Correct them as required Also...

Страница 99: ...ror occurs and restarts automatically after 3 minute standby Supposed Causes Supply voltage is not as specified Defective DC voltage detection circuit Defective over voltage detection circuit Defectiv...

Страница 100: ...latching sound 3 If the EV does not generate latching sound in the above step 2 disconnect the connector and check the continuity using a tester 4 Check the continuity between the pins 1 6 and 3 6 and...

Страница 101: ...from the connector and check the continuity Start heating operation Four way valve coil Cooling Dry No continuity Heating Continuity Replace the outdoor unit PCB Replace the four way valve coil Replac...

Страница 102: ...mistor is directly mounted on the PCB disconnect the connector for the PCB and measure Thermistor Room temperature thermistor Other thermistors R25 C 10 k R25 C 20 k Temperature C B 3435 B 3950 20 73...

Страница 103: ...ld be 46 C or lower Check the allowable dimensions of the air suction and discharge area Is the airflow blocked by obstacles or winds blowing in the opposite direction R9459 Abnormal YES YES YES Is th...

Страница 104: ...board and check the waveform disturbance Check to see if the power supply waveform is a sine wave Fig 1 Check to see if there is waveform disturbance near the zero cross sections circled in Fig 2 R71...

Страница 105: ...easure resistance between the terminals of the DB1 and the terminals of the compressor connector with a multi tester Evaluate the measurement results for a judgment Refrigerant system check Check for...

Страница 106: ...he voltage between the pins 10 11 is 15 VDC 2 Check if the Hall IC generates the rotation pulse 0 15 VDC 4 times between the pins 10 12 10 13 when the fan motor is manually rotated once 13 12 11 10 9...

Страница 107: ...e power on and stop the operation 3 Check if the Hall IC generates the rotation pulse 4 times when the fan motor is manually rotated once between the pins 1 and 3 R11979 12 11 10 9 8 7 6 5 4 3 2 1 Pha...

Страница 108: ...or for connection 2 Turn the power off 3 Check if each resistance at the phases U V and V W is 90 100 between the pins 12 9 and between 9 6 R11979 12 11 10 9 8 7 6 5 4 3 2 1 Phase U Free pin S200 Free...

Страница 109: ...ecking Measure the resistance between the pins of the DB1 as below If the resistance is or less than 1 k short circuit occurs on the main circuit terminal of the tester in case of digital terminal 2 3...

Страница 110: ...1 5 Removal of Electrical Box Vertical Blades 108 1 6 Removal of PCB Swing Motor 111 1 7 Removal of Indoor Heat Exchanger 115 1 8 Removal of Fan Rotor 118 1 9 Exchange of Drain Hose 121 2 Outdoor Uni...

Страница 111: ...nal reception When the ON OFF button is kept pressed for 5 seconds the forced cooling operation is performed for about 15 minutes 2 Remove the air filter 1 Open the front panel to the position where i...

Страница 112: ...ir filter and unfastening the projections from the air filter frame 3 Remove the Titanium apatite photocatalytic air purifying filter from its frame at 5 positions by bending it To prevent the damage...

Страница 113: ...e 2 Unfasten the center shaft while bending the horizontal blade slightly The center shaft can be released easily by bending the blade Cautions for reassembling 1 Since the key pattern hook is provide...

Страница 114: ...e 2 Remove the fan guard 1 Unfasten the hooks at the lower part of the fan guard with a flat screwdriver 2 Unfasten the hooks at the upper 2 positions 3 Remove the fan guard Remove the other fan guard...

Страница 115: ...over the position where it stops 2 Release the right rotary shaft The rotary shaft on each side can be released easily by sliding each shaft inwards 3 Release the left rotary shaft 4 Remove the front...

Страница 116: ...er Preparation Remove the front panel according to the Removal of Front Panel You can remove the front grille without detaching the service cover 2 Pull out the service cover down in the direction of...

Страница 117: ...he grille up to unfasten the hooks 4 Pull the upper part of the front grille 5 Lift the lower part up and remove the front grille When reassembling the front grille make sure that the hooks are fasten...

Страница 118: ...Front Grille 1 The figure shows the connections of wire harnesses 2 Remove the screw of the wire retaining plate 3 Loosen the screws of the terminal board and disconnect the connecting wires 1 Black...

Страница 119: ...ect the earth wire 2 Disconnect the connector for fan motor S200 3 Remove the screw of the electrical box 4 Slide the electrical box to the right first and detach the horizontal blade from the electri...

Страница 120: ...ace only one fin The vertical blade ASSY is not marked for difference between right and left 1 Unfasten the hooks at the upper 2 positions 2 Unfasten the 3 hooks at the shaft mounting part by pressing...

Страница 121: ...Points 1 Remove the shield plate Preparation Remove the electrical box according to the Removal of Electrical Box 1 Unfasten the hooks at the upper 2 positions of the shield plate 2 Unfasten the hook...

Страница 122: ...move the display PCB 1 Lift the lower part of the display PCB ASSY to remove Step Procedure Points R8008 Indoor heat exchanger thermistor Heat exchanger earth point Black White Red S32 S26 S6 FG R1195...

Страница 123: ...names of the display PCB component parts S27 control PCB 3 Remove the swing motor 1 2 Release the harness from the hooks Remove the screw of the swing motor 3 Disconnect the connector Step Procedure P...

Страница 124: ...pper part of the control PCB and remove it 6 The figure shows the names of the control PCB component parts S6 swing motor S26 display PCB S32 indoor heat exchanger thermistor S200 fan motor S403 adapt...

Страница 125: ...mpressor running and the stop valve opened air may be sucked in to generate an over pressure in refrigeration cycle thus resulting in pipe rupture or accidental injury If the drain hose is embedded in...

Страница 126: ...indoor unit When the pipings are disconnected protect the both openings from entering moisture 1 Remove the indoor unit from the installation plate 2 Unfasten the hook of the piping fixture on the ba...

Страница 127: ...indoor heat exchanger be sure to wear gloves or wrap it with cloth before proceeding to the work You may be injured by the fins 5 Push and unfasten the hook on the right side and lift up the indoor he...

Страница 128: ...f all power supplies before disassembling work Step Procedure Points 1 Remove the right side panel Preparation Remove the indoor heat exchanger according to the Removal of Indoor Heat Exchanger 1 Remo...

Страница 129: ...The fan motor has 3 projections The fan rotor has a rotating shaft on the left side 2 Lift up the right side of the fan rotor and slide it to the right then remove it 3 Press the bearing from outside...

Страница 130: ...the fan motor from the fan rotor to remove The magnet of the fan motor is united with the fan rotor Be careful not to attract metal waste to the magnet Keep away from the materials that can be affecte...

Страница 131: ...ter leakage make sure to mount the heat insulation fixing screw as it was 2 Remove the drain plug located at the left side with pliers and press the removed drain plug into the right side with a hexag...

Страница 132: ...ts 1 Appearance features Take care not to cut your finger by the fins of the outdoor heat exchanger 2 Remove the panels 1 Remove the screw of the stop valve cover Pull down the stop valve cover and re...

Страница 133: ...the right side hooks and remove the front panel 6 7 The discharge grille has 2 projections to prevent rotating Press the projections from the rear side and rotate the discharge grille Unfasten the 6 h...

Страница 134: ...n mark of the outdoor fan with D cut section of the motor shaft when mounting Spanner size 10 mm 3 Release the washer fitted nut M6 of the outdoor fan with a spanner 4 Remove the outdoor fan 2 Remove...

Страница 135: ...1 Remove the right side panel Preparation Remove the panels according to the Removal of Panels 1 Remove the screw on the rear side of the right side panel 2 Release the outdoor temperature thermistor...

Страница 136: ...e sure to fit the hook 6 Unfasten the hook and lift up the right side panel to remove 2 Remove the electrical box 1 Disconnect the connector for four way valve coil S80 2 Disconnect the connector for...

Страница 137: ...for the electronic expansion valve coil 5 Disconnect the relay connector for the compressor motor Pay attention so as not to lose the fixture When reassembling do not insert the thermistor up to the d...

Страница 138: ...o lose the clip 8 Cut the clamp 9 Unfasten the hook from the partition plate with a flat screwdriver The electrical box can be removed by lifting itself without a screwdriver 10 Lift and remove the el...

Страница 139: ...e control PCB 1 Remove the screw on the terminal board 2 Cut the clamp 3 Remove the 2 screws of the earth terminals 4 Disconnect the 2 terminals of the reactor Step Procedure Points R11960 Terminal bo...

Страница 140: ...move the 3 screws to remove the reactor 6 Disconnect the connector for thermistors S90 7 Remove the 6 screws 8 Disconnect the 3 connectors for filter PCB S10 HN3 HL3 Step Procedure Points Reactor R119...

Страница 141: ...10 Lift and remove the control PCB 11 Feature of the control PCB S10 HN3 HL3 filter PCB S20 electronic expansion valve coil S40 overload protector S70 fan motor S80 four way valve coil S90 thermistor...

Страница 142: ...emove the partition plate 1 Remove 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 bottom fram...

Страница 143: ...und blankets outer and inner 2 out 3 Pull the sound blanket inner 1 out Since the piping ports on the sound blanket are torn easily remove the blanket carefully Step Procedure Points R10720 Sound blan...

Страница 144: ...k Step Procedure Points 1 Remove the peripheries Remove the four way valve coil and the putty so as not to burn them 1 Remove the screw and remove the four way valve coil 2 Remove the terminal cover 3...

Страница 145: ...sembling precautions 1 Use non oxidizing brazing method If nitrogen gas is not available braze the parts speedily 2 Avoid deterioration of the gaskets due to carbonization of oil inside the four way v...

Страница 146: ...ns that are easy to separate and join together later 2 With a tube cutter cut off the internal pipes to easily take out the four way valve Note Do not use a metal saw for cutting pipes by all means be...

Страница 147: ...ng 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 the sake of this wrap the four way valve with wet cloth...

Страница 148: ...SiBE041010 138 Others Part 8 Others 1 Others 139 1 1 Trial Operation 139 1 2 Field Settings 140 1 3 Application of Silicon Grease to a Power Transistor and a Diode Bridge 141...

Страница 149: ...operation with the previous mode when the circuit breaker is restored In cooling mode select the lowest programmable temperature in heating mode select the highest programmable temperature Trial oper...

Страница 150: ...dress setting jumper J4 1 2 2 Jumper Settings For the location of the jumper refer to the following pages Indoor unit page 10 Outdoor unit page 12 ADDRESS EXIST CUT 1 2 JA JA R12007 Address J4 EXIST C...

Страница 151: ...transistor and the diode bridge Applying the paste should be implemented in accordance with the following instruction Remark There is the possibility of failure with smoke in case of bad heat radiatio...

Страница 152: ...SiBE041010 142 Appendix Part 9 Appendix 1 Piping Diagrams 143 1 1 Indoor Unit 143 1 2 Outdoor Unit 144 2 Wiring Diagrams 145 2 1 Indoor Unit 145 2 2 Outdoor Unit 145...

Страница 153: ...ams 1 1 Indoor Unit FTX20 25 35JV1B ATX20 25 35JV1B REFRIGERANT FLOW HEAT EXCHANGER FIELD PIPING 4 8CuT 7 0CuT 7 0CuT 6 4CuT FAN MOTOR FIELD PIPING COOLING INDOOR UNIT 7 0CuT M HEATING 9 5CuT 9 5CuT 7...

Страница 154: ...RATED VALVE MUFFLER WITH FILTER MUFFLER WITH FILTER DISCHARGE PIPE THERMISTOR FOUR WAY VALVE ON HEATING LIQUID STOP VALVE GAS STOP VALVE 3D058716B 9 5CuT 7 0CuT FIELD PIPING 4 8CuT PROPELLER FAN M 9 5...

Страница 155: ...0 E2 GRN S40 1 REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS NOTE indoor outdoor S90 MRM20 SA1 HA1 FIELD WIRING ORG RED 1 Y1E BRN YLW M BLU WHT 6 BRN WHT ORG BLK BLU RED YLW 1 3 IN CASE OF COOLING...

Страница 156: ...distributor and or retailer 1 Air conditioners should not be installed in areas where corrosive gases such as acid gas or alkaline gas are produced 2 If the outdoor unit is to be installed close to t...

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