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Daikin FTXD60JV1B, User Manual

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Daikin FTXD60JV1B User Manual Download Page 104

Troubleshooting

SiBE04-101

96

Service Diagnosis

4.9

Faulty Indoor Unit PCB

Remote Controller 
Display

∗

Indoor unit LED 
Display

Method of 
Malfunction 
Detection

The condition of the transmission circuit for indoor-outdoor signal transmission is detected.

Malfunction 
Decision 
Conditions

When the transmission circuit remains ON.

Supposed Causes

Faulty indoor unit PCB

Troubleshooting

Turn on the power again.

Replace the indoor unit PCB(2).

Replace the indoor unit PCB(1).

Are 5V and 12V 

outputted at the indoor 

unit PCB (1) ?

(R1173)

NO

YES

Caution

Be sure to turn off power switch before connect or disconnect connector, 
or parts damage may be occurred.

SiBE04-101.book  Page 96  Monday, October 15, 2001  3:08 PM

Summary of Contents for FTXD60JV1B

Page 1: ...Mounted Type Heat Pump Indoor Unit FTXD50JV1B FTXD60JV1B FTXD71JV1B Outdoor Unit RXD50JV1B RXD60JV1B RXD71JV1B Floor Ceiling Suspended Dual Type Heat Pump Indoor Unit FLX50JV1B FLX60JV1B Outdoor Unit...

Page 2: ...ciple 20 1 4 Defrost Control 21 1 5 Forced Operation Mode 23 1 6 Flap Control 24 1 7 Fan Speed Control for Indoor Units 27 1 8 Fan Speed Control for Outdoor Units 28 1 9 Outdoor Unit Silent Operation...

Page 3: ...Unit PCB 95 4 9 Faulty Indoor Unit PCB 96 4 10 Power Supply Abnormalities or Faulty Indoor PCB 97 4 11 Signal Transmission Error between Indoor and Outdoor Units 98 4 12 Faulty Indoor Outdoor Power Su...

Page 4: ...Reactor 140 1 4 Removal of Sound Insulation for Compressor 142 1 5 Removal of 4 way Valve 143 1 6 Removal of Motorized Valve 144 1 7 Removal of Compressor 145 Part 8 Appendix 147 1 Piping Diagrams 14...

Page 5: ...bling 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 equipment to conduct the repair or...

Page 6: ...shock excessive heat generation or fire When relocating the equipment make sure that the new installation site has sufficient strength to withstand the weight of the equipment If the installation site...

Page 7: ...old battery to prevent 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...

Page 8: ...ctrical shock Be sure to check the drainage of the indoor unit after the repair Faulty drainage can cause the water to enter the room and wet the furniture and floor Caution Icon Type of Information D...

Page 9: ...SiBE04 101 List of Function 1 Part 1 List of Function 1 Functions 2 1 1 List of Functions 2 SiBE04 101 book Page 1 Monday October 15 2001 3 08 PM...

Page 10: ...tic Timer Vertical Auto Swing Up and Down Worry Free Reliability Durability Auto Restart after Power Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display 3 D Airflow The Rem...

Page 11: ...SiBE04 101 Specifications 3 Part 2 Specifications 1 Specifications 4 1 1 Wall Mounted Type 4 1 2 Floor Ceiling Suspended Dual Type 6 SiBE04 101 book Page 3 Monday October 15 2001 3 08 PM...

Page 12: ...izontal and Downward Right Left Horizontal and Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 17 0 20 0 20 Power Consumption Rated W...

Page 13: ...Current Rated A 0 22 0 22 Power Consumption Rated W 50 50 Power Factor 98 8 98 8 Temperature Control Microcomputer Control Dimensions H W D mm 298 1 050 190 Packaged Dimensions W D H mm 1 183 367 289...

Page 14: ...ilter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 43 0 42 0 45 0 43 Power Consumption Rated W 96 96 98 96 Power Factor 97 1 99 4 94 7 97 1 Temperature Con...

Page 15: ...tor Wiring Diagram 1 Printed Circuit Board Connector Wiring Diagram and Name 8 1 1 Name of Connectors for Indoor Unit 8 1 2 FTXD50 60 71J Series 9 1 3 FLX50 60J Series 11 1 4 Name of Connectors for Ou...

Page 16: ...ed Control 5 S24 Connector for Display PCB 6 S25 S27 S36 Connector for Control PCB 7 S26 Connector for Signal Receiver PCB 8 S31 S32 Connector for Room Temp Heat Exchanger Thermistor 9 S37 Connector f...

Page 17: ...e them to each indoor unit Jumper On Indoor PC Board Function When Connected When Cut J2 JA When two indoor units are installed in one room the two wireless remote controllers can be set for different...

Page 18: ...Diagram and Name SiBE04 101 10 Printed Circuit Board Connector Wiring Diagram 1 2 2 Power Supply PCB Detail PCB 2 1 2 3 Display PCB Detail PCB 3 1 2 4 Signal Receiver PCB Detail PCB 4 SiBE04 101 book...

Page 19: ...rd Connector Wiring Diagram and Name Printed Circuit Board Connector Wiring Diagram 11 1 3 FLX50 60J Series 1 3 1 Control PCB PCB 1 Refer to 1 2 1 1 3 2 Power Supply PCB PCB 2 SiBE04 101 book Page 11...

Page 20: ...Connector Wiring Diagram and Name SiBE04 101 12 Printed Circuit Board Connector Wiring Diagram 1 3 3 Display PCB Detail PCB 3 1 3 4 Signal Receiver PCB Detail PCB 4 SiBE04 101 book Page 12 Monday Oct...

Page 21: ...onnector for 4 Way Valve Coil Heat Pump Only 3 S40 Connector for TFU 76 C 4 S50 Connector for Long Piping Jumper 5 S70 Connector for Fan Motor 6 S90 Connector for Thermistor 7 S101 Connector for Activ...

Page 22: ...Circuit Board Connector Wiring Diagram and Name SiBE04 101 14 Printed Circuit Board Connector Wiring Diagram 1 5 RXD50 60 71J Series 1 5 1 Control PCB SiBE04 101 book Page 14 Monday October 15 2001 3...

Page 23: ...SiBE04 101 Printed Circuit Board Connector Wiring Diagram and Name Printed Circuit Board Connector Wiring Diagram 15 1 5 2 Filter PCB SiBE04 101 book Page 15 Monday October 15 2001 3 08 PM...

Page 24: ...Printed Circuit Board Connector Wiring Diagram and Name SiBE04 101 16 Printed Circuit Board Connector Wiring Diagram SiBE04 101 book Page 16 Monday October 15 2001 3 08 PM...

Page 25: ...rful Operation 32 1 12 Home Leave Operation 33 1 13 Automatic Operation 34 1 14 Input Current Control 35 1 15 Freeze up Prevention Function in Cooling 36 1 16 Peak Cut Control Function 37 1 17 4 Way V...

Page 26: ...TDOOR UNIT M COOLING HEATING FIELD PIPING FIELD PIPING R1T DOT R2T INDOOR UNIT R1T R2T M R1164 Controls Outdoor heat exchanger thermistor Outdoor ambient temperature thermistor Indoor ambient temperat...

Page 27: ...room air conditioners Refer to Pre heat operation on page 30 Mode Item Normal Operating Mode Auto Heat pump only Cooling Dry keep Heating Including Automatic defrost for Heat pump only Fan Cooling onl...

Page 28: ...tion 1 The supplied AC power source is converted into the DC power source for the present 2 The DC power source is reconverted into the three phase AC power source with variable frequency When the fre...

Page 29: ...f accumulated running time Less than 90 minutes of accumulated running time Condition 1 2 or 3 in the table below 2 More than 90 minutes of accumulated running time Condition 1 4 or 5 in the table bel...

Page 30: ...n EVpulse ON OFF Defrost OFF Defrost ON A Hz B Hz C Hz 76Hz 80Hz 90Hz 108Hz 35min 3sec 3sec 450Pls 400Pls 450Pls 50sec 60sec 60sec 280sec 80sec 60sec 180sec 300sec 150min R1016 Minimum time Maximum ti...

Page 31: ...ter the forced cooling mode by either way of 1 or 2 Fix operation frequency to A Hz Operation on timer 15 min Indoor unit s fan H tap Swing flap the latest set position With a change of the remote con...

Page 32: ...During cooling mode the diffuser retracts into the indoor unit Then cool air can be blown far and pervaded all over the room Louvres The louvres made of elastic synthetic resin provide a wide range o...

Page 33: ...swings in the swing range which meets the operation mode selected Outline of 3 D Airflow Alternative repetition of vertical and horizontal swing motions enables uniform air conditioning of the entire...

Page 34: ...r goes out if auto swing is not effected Swing Angle Range Swing angle is common for ceiling type and floor type The following description is for the swing angle for ceiling type The vertical louvre i...

Page 35: ...ote When there is no operation and the night set mode turns on the step is low Refer to Night set mode on page 31 Automatic Air Flow Control for Cooling The following drawing explains the principle of...

Page 36: ...ion 50 Class 60 Class 71 Class HH 770 rpm 760 rpm 820 rpm H 740 rpm 730 rpm 790 rpm L 580 rpm 580 rpm 650 rpm LL 280 rpm 320 rpm 320 rpm LLL 200 rpm 200 rpm 200 rpm 50 Class 60 Class 71 Class H 680 rp...

Page 37: ...r fan rotating speed and setting of the upper limit of the compressor frequency 1 Outdoor fan rotating speed Refer to the description in the Fan Speed Control for Outdoor Units 2 Compressor frequency...

Page 38: ...temperature When entering the following dry mode Stop an operation will start with Dry Mode except Dry changing to dry mode Thermostat ON OFF point is decided in accordance with the following conditio...

Page 39: ...18 C A 0 Hz 0 Hz 0 Hz except A 32 Hz 28 Hz 28 Hz Room temp 18 C A 0 Hz 0 Hz 0 Hz B 32 Hz 28 Hz 28 Hz D 32 Hz 28 Hz 28 Hz E 30 Hz 30 Hz 28 Hz F 36 Hz 34 Hz 30 Hz Fan rpm thermostat ON 50 Class 60 Class...

Page 40: ...1 Class Wall Mounted Type 50 Class Floor Ceiling Type 60 Class Floor Ceiling Type LLL W1 350 350 350 300 300 LL W2 650 650 650 400 400 Thermostat off is LL L W3C 1020 1100 1100 1020 1100 ML W4C 1090 1...

Page 41: ...tive 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 is ineffective in dry mode...

Page 42: ...mperature Main unit setting temperature 2 5 deg Thermostat ON OFF point is the same as the ON OFF point of cooling or heating operation 3 During initial operation Room temperature Remote controller se...

Page 43: ...the return zone with I IN I3 I I 1A Limit of frequency is cancelled Stop zone judged as the stop zone with I IN I4 Compressor is stopped and countermeasure for the malfunction is carried out 2 Current...

Page 44: ...conducted for each zone in accordance with the heat exchange temperature DTO Freeze protection temperature of heat exchanger The restriction for frequency is not conducted in the return area by means...

Page 45: ...ure is prevented by dropping the frequency before the pressure rises higher than necessary In powerful operation the temperature of DP1 to DP4 is raised by 1 C DP Peak cut temperature of heat exchange...

Page 46: ...ion Details of the Control 1 If a 4 way valve is OFF when compressors stop it will be ON at this time 2 If a 4 way valve was ON when compressors operated in the last time it will be ON at this time 3...

Page 47: ...ency at TCG2 for the time of TCG2 When the time of TCG2 expires start TCG3 timer and set the upper limit of output frequency at TCG3 for the time of TCG3 When the time of TCG3 expires reset the limit...

Page 48: ...at the second step During operation of compressors Outdoor temperature DOA3CG If and are under the simultaneous condition with AND the lower limit of frequency in this function is set at FCG8 Compress...

Page 49: ...xchange temperature is lower than 18 C When the conditions of and and and are established continuously for 6 minutes Stop the compressor operation Reset the compressor after waiting for 3 minutes Outs...

Page 50: ...revent dew condensation will be completed if are under the coordinate condition with OR 2 Control details It controls the operation frequency in accordance with the temperature zone in the step down a...

Page 51: ...utdoor control PCB in order to avoid lowering of performance due to insufficient pressure reduction Details of the Control Setting has been made for long piping S50 jumper wire is cut Being controlled...

Page 52: ...defrosting operation By cutting the jumper wire J400 on the PCB the compressor operation frequency in defrosting operation is increased by 4Hz and the maximum defrosting time is extended by 90 seconds...

Page 53: ...SiBE04 101 System Configuration 45 Part 5 System Configuration 1 Instruction 46 1 1 FTXD50 60 71J 46 1 2 FLX50 60J 65 SiBE04 101 book Page 45 Monday October 15 2001 3 08 PM...

Page 54: ...purchased Check with a qualified repairman before attempting any repairs which might accompany addition of refrigerant The refrigerant used in the air conditioner is safe Although leaks should not oc...

Page 55: ...NING CAUTION Do not stand or sit on the outdoor unit Do not place any object on the unit The object or the person may fall down or drop causing injury Do not place under the indoor or outdoor unit any...

Page 56: ...more indoor units have no precedence room settings and are set to modes that differ from each other the indoor unit which is operated first activates while the other indoor unit does not activate and...

Page 57: ...the power is on the fan may rotate inside and may cause injury CAUTION Receiver Mode Temperature setting FTXD AUTO 25 C AUTO Air flow rate Front grille Indicator lamps Grille tab Diffuser OPERATION la...

Page 58: ...ting FAN setting button It selects the air flow rate setting SWING buttons See page 11 It changes the temperature or time setting Display It displays the current settings In this illustration each sec...

Page 59: ...t is inside of this part Drain hose Appearance of the outdoor unit may differ with some models Names of Parts RKD50 60 71J RXD50 60 71J Air inlet Air outlet Back and side Refrigerant piping and inter...

Page 60: ...op the remote controller Do not get it wet The maximum distance for communication is about 7 m About the remote controller Never expose the remote controller to direct sunlight Dust on the signal tran...

Page 61: ...conditioner for a long period for example in spring or autumn turn the breaker OFF Use the air conditioner in the following conditions Press blinks Now the clock is set Mode COOL DRY HEAT Operating co...

Page 62: ...AT mode operation Since this air conditioner heats the room by taking heat from outdoor air to indoors the heating capacity becomes smaller in lower outdoor temperatures If the heating effect is insuf...

Page 63: ...hen it is swinging the mechanism may be broken Notes on flap angles Adjusting the vertical blade louvre Press Every time the button is pressed appears or disappears The flap automatically swings up an...

Page 64: ...rature setting is lowered by 3 C and the air flow rate is slightly increased OUTDOOR UNIT SILENT operation lowers the noise level of the outdoor unit by changing the frequency and fan rpm on the outdo...

Page 65: ...Adjust the air flow rate setting with FAN as you like The temperature and air flow rate will be the same as the previous settings starting with the second use If you want to change the settings from...

Page 66: ...mperature to that set for normal operation Even the coldest winters will pose no problem NOTE Note on HOME LEAVE Operation HOME LEAVE Operation is only available in COOL and HEAT modes Cannot be used...

Page 67: ...e the air conditioner is not operating Press ON ON TIMER TIMER once again Check that the clock is correct If not set the clock to the present time See page 9 1 is displayed blinks 2 Press until the ti...

Page 68: ...rs Wipe them with dry soft cloth For cleaning do not use water hotter than 40 C benzine gasoline thinner nor other volatile oils polishing compound scrubbing brushes nor other hard stuff It is recomme...

Page 69: ...ay Supporting the front grille with one hand fit the lock by sliding up the knob with the other hand Close the front grille slowly in this state Push the grille at the 3 points two at both sides and i...

Page 70: ...tem is taking away the frost on the outdoor unit You should wait for about 3 to 8 minutes In HEAT mode The frost on the outdoor unit melts into water or steam when the air conditioner is in defrost op...

Page 71: ...inlet or the outlet of the indoor and the outdoor units Clean the air filters or take all obstacles away and turn the breaker OFF Then turn it ON again and try operating the air conditioner with the...

Page 72: ...rk properly There is a burning smell Water leaks from the indoor unit Turn the breaker OFF and call the service shop After a power failure The air conditioner automatically resumes operation in about...

Page 73: ...w Direction TIMER lamp yellow See page 15 Timer Operation HOME LEAVE lamp red Lights up when you use HOME LEAVE Operation See page 13 The louvre is inside of the air outlet See page 11 Adjusting the A...

Page 74: ...selects the air flow rate setting SWING button See page 11 It changes the temperature setting Display It displays the current settings In this illustration each section is shown with all its displays...

Page 75: ...mes of Parts RXD50 60J Air inlet Air outlet Back and side Refrigerant piping and inter unit cable Earth terminal It is inside of this part Drain hose Appearance of the outdoor unit may differ from som...

Page 76: ...ain the unit will not operate Do not drop the remote controller Do not get it wet The maximum distance for communication is about 7 m About the remote controller Never expose the remote controller to...

Page 77: ...to stop the operation In multi system it may work to stop the operation of the outdoor unit only Condensation may occur on the indoor unit and drip A safety device may work to stop the operation 1 Us...

Page 78: ...e on HEAT mode operation Since this air conditioner heats the room by taking heat from outdoor air to indoors the heating capacity becomes smaller in lower outdoor temperatures If the heating effect i...

Page 79: ...ken NOTE Unless SWING is selected you should set the flap at a near horizontal angle in COOL or DRY mode to obtain the best performance In COOL or DRY mode if the flap is fixed at a downward position...

Page 80: ...ings are not variable In DRY mode The temperature setting is lowered by 3 C and the air flow rate is slightly increased OUTDOOR UNIT SILENT operation lowers the noise level of the outdoor unit by chan...

Page 81: ...as you like 1 2 3 Adjust the air flow rate setting with FAN as you like The temperature and air flow rate will be the same as the previous settings starting with the second use If you want to change...

Page 82: ...e to that set for normal operation Even the coldest winters will pose no problem NOTE l l l l l l k on HOME LEAVE Operation is only available in COOL and HEAT modes Cannot be used in AUTO DRY and FAN...

Page 83: ...rating Press ON once again Check that the clock is correct If not set the clock to the present time See page 9 1 AM is displayed blinks 2 Press TEMP until the time setting reaches the point you like E...

Page 84: ...scrubbing brushes nor other hard stuff It is recommended to replace them every three months Air purifying filters need to be replaced regularly Attach the air purifying filter Care and Cleaning CAUTI...

Page 85: ...mperature is under 28 C Care and Cleaning Before a long idle period Check that the base stand and other fittings of the outdoor unit are not decayed or corroded Check that nothing blocks the air inlet...

Page 86: ...system is taking away the frost on the outdoor unit You should wait for about 3 to 8 minutes In HEAT mode The frost on the outdoor unit melts into water or steam when the air conditioner is in defrost...

Page 87: ...he outdoor units Is the temperature setting appropriate Are the windows and doors closed Are the air flow rate and the air direction set appropriately Are the air filters clean Is there anything to bl...

Page 88: ...rk properly There is a burning smell Water leaks from the indoor unit Turn the breaker OFF and call the service shop After a power failure The air conditioner automatically resumes operation in about...

Page 89: ...10 Power Supply Abnormalities or Faulty Indoor PCB 97 4 11 Signal Transmission Error between Indoor and Outdoor Units 98 4 12 Faulty Indoor Outdoor Power Supply Specification 99 4 13 Operation Halt Du...

Page 90: ...n device of the indoor or outdoor unit is activated or when the thermistor malfunctions disabling equipment operation 2 When a signal transmission error occurs between the indoor and outdoor units In...

Page 91: ...normal equipment condition and the OFF condition of the red LED indicates normal equipment condition Troubleshooting with the green LED The LED A of the outdoor unit indicate microcomputer operation c...

Page 92: ...eration cannot be used when the outside temperature is 30 C or higher only for heat pump model and cooling operation cannot be used when the outside temperature is below 10 C Diagnosis with indoor uni...

Page 93: ...p is produced The code indication changes in the sequence shown below and notifies with along beep Note 1 A short beep and two consecutive beeps indicate non corresponding codes 2 To cancel the code d...

Page 94: ...5 15 A3 25 P4 6 A6 16 A1 26 L3 7 E5 17 C4 27 L4 8 LC 18 C5 28 H6 9 C9 19 H9 29 H7 10 U0 20 J6 30 U2 C ON AMPM AMPM TEMP ON OFF ON OFF TIMER CANCEL POWERFULL Transmitter It sends signals to the indoor...

Page 95: ...t PCB 97 U4 Signal transmission error between indoor and outdoor units 98 UA Faulty indoor outdoor power supply specification 99 OR E8 Operation halt due to detection of input overcurrent 106 E5 Stopp...

Page 96: ...4 3 4 3 E5 Stoppage by OL actuation Melt down by temperature fuse 102 5 3 4 4 3 E6 Operation halt due to compressor seizing 104 5 4 4 4 4 E7 DC fan motor seizing 105 5 3 4 3 4 or E8 Operation halt due...

Page 97: ...ed Causes Faulty indoor unit PCB Faulty connector connection Troubleshooting Note Connector numbers vary depending on models Control connector S37 Connector connection check note YES Is it normal NO C...

Page 98: ...s below 0 C during cooling operation Supposed Causes Operation halt due to clogged air filter of the indoor unit Operation halt due to dust accumulation on the indoor unit heat exchanger Operation hal...

Page 99: ...voltage is used to determine abnormal fan motor operation Malfunction Decision Conditions When the detected rotation speed is less than 50 of the H tap under maximum fan motor rotation demand Suppose...

Page 100: ...and Operate the fan Remove the fan motor s connector S201 to operate Check No 35 Check the output of the indoor unit s PCB 1 Is the output of the fan motor s power supply voltage found Is the output o...

Page 101: ...2 and 3 rotating the fan motor once by hand Is it at the rated voltage Is there conductivity NO Check the capacitor s conductivity Check the fan motor voltage immediately after re start Is it at the r...

Page 102: ...low 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 1 Refer to P 119 C4...

Page 103: ...voltage drop Momentary power failure etc Faulty indoor unit PCB Troubleshooting Turn on the power again Check the grounding earth YES YES Replace the indoor unit PCB 2 Replace the indoor unit PCB 1 P...

Page 104: ...ted Malfunction Decision Conditions When the transmission circuit remains ON Supposed Causes Faulty indoor unit PCB Troubleshooting Turn on the power again Replace the indoor unit PCB 2 Replace the in...

Page 105: ...indoor outdoor signal communications Supposed Causes Display disabled by fault power supply Faulty signal transmitting receiving circuit in indoor printed circuit boards 1 and 2 Microcomputer program...

Page 106: ...n error due to breaking of wire in the connection wires between the indoor and outdoor units wire No 2 Troubleshooting Check No 12 Refer to P 121 Check the outdoor unit s LED A Check the indoor unit o...

Page 107: ...iving unit is connected to the outdoor power receiving unit Supposed Causes Connection of improper models Installation of wrong PCB Faulty PCB Troubleshooting Check the PCB No such as 2P01234 on the p...

Page 108: ...oubleshooting Check No 2 Refer to P 120 Check No 4 Refer to P 120 Check No 20 Refer to P 125 Check No 1 Refer to P 119 Check No 20 Electronic expansion valve check Check the installation space Normal...

Page 109: ...vation due to disconnected discharge pipe thermistor Activation due to faulty 4 way valve Detection error due to faulty outdoor PCB Activation due to mixing of moisture in the pipes installed at site...

Page 110: ...roubles does not occur for a total one operating hour of the compressor since the interruption OL failure radiation fin temperature rise gas shortage or compressor failure to start OL setting Open at...

Page 111: ...ne Check continuity between contacts using a tester YES NO Is the connector tight Check connection of the OL connector YES NO Is there continuity Check continuity of the OL harness YES NO Is the syste...

Page 112: ...em shuts down after 16 times Cancellation condition 8 continuous minutes of operation normal Supposed Causes Compressor lock Choking of the refrigerant system Troubleshooting Turn off the power switch...

Page 113: ...onnected or faulty harness between fan motor and PCB Foreign item blocking fan operation Cancellation condition 8 continuous minutes of operation normal Troubleshooting Check No 27 Refer to P 126 Turn...

Page 114: ...n Decision Conditions When the CT input remains above the value shown in the below table for 2 5 seconds during compressor operation Table for constant Supposed Causes Over current due to faulty compr...

Page 115: ...r of the main inverter circuit YES YES Replace the outdoor unit PCB 1 Replace the outdoor unit PCB 2 Replace the outdoor unit PCB 2 Replace the electrolytic capacitor 1 It stops when the current runs...

Page 116: ...o faulty outdoor unit PCB Startup failure due to closed stop valve Erroneous detection due to faulty outdoor unit PCB Abnormal input voltage Troubleshooting Check No 14 Refer to P 122 Check No 13 Refe...

Page 117: ...aulty rectifier Troubleshooting Check No 14 Refer to P 122 Check No 14 Check capacitor voltage Is operation current on inter connecting wire 1 or 3 like as right figure NO YES YES Is voltage 350 30 VD...

Page 118: ...n When output overcurrent enters microcomputer from output overcurrent detection circuit When error occurs 16 times system shuts down Condition for error counter reset When compressor operates for 8 m...

Page 119: ...voltage drop n Excessive load on compressor motor n Shorting in electric circuit due to contact Is stop valve fully open NO Are outputs of phases U V and W balanced NO Is supply voltage at related val...

Page 120: ...pressor operation is more than 4 96 V or less than 0 04 V Value changes depends on models Supposed Causes Faulty connector connection Faulty thermistor Faulty PCB Troubleshooting Check No 1 Refer to P...

Page 121: ...ture 111 C Opening of electromagnetic valve 450 pulses Full open A system shutdown occurs after 4 times When a gas shortage malfunction is generated 4 times the system shuts down The counter is reset...

Page 122: ...ES YES YES YES NO Insert in the specified position Open stop valve Correct the pipe flare replace the union Check for disconnected power transistor harness and correct it Replace the ruptured pipe Che...

Page 123: ...Abnormal power supply voltage Malfunction of low voltage detection section Malfunction of PAM control parts or SSR Troubleshooting Is the power supply voltage within the specification Check the power...

Page 124: ...rnal factor Noise Momentary voltage drop Momentary power failure etc Faulty outdoor unit PCB Troubleshooting Turn on the power again Check the grounding YES YES Replace the outdoor unit PCB Provide pr...

Page 125: ...it is checked 3 Existense of the zero cross signal Malfunction Decision Conditions 1 When the microcomputer program does not function properly 2 When the signals transmitted from the outdoor unit to t...

Page 126: ...ance and take necessary measures Replace the outdoor unit PCB Correct interconnecting wire Replace the indoor unit PCB Correct the power supply Replace the outdoor unit PCB Replace the varistor R1071...

Page 127: ...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 3950 Temperature...

Page 128: ...the allowable dimensions of the air suction and discharge area Is the air flow blocked by obstacles or winds blowing in the opposite direction R1075 Abnormal YES YES YES Does the discharged air from o...

Page 129: ...PCB INV PCB 5 If the compressor stops before the output frequency stabilizes measure the output voltage Output Voltage Measurement Remove the front panel and disconnect the red yellow and blue wire ha...

Page 130: ...sitions 2 Capacitor voltage check Measuring method Before measuring operate the unit for several minutes then shut down the operation by force using the circuit breaker If the unit is shut down using...

Page 131: ...or is terminal DC 1 or DC 2 5 1 7 Refrigerant System Check Check No 15 Is any moisture found in sight glass Is the discharge thermistor disconnected from the holder YES Is the temperature of 4 way val...

Page 132: ...IC Replace the fan motor Both 1 and 2 result Replace the PCB The connector has 3 pins and there are two patterns of lead wire colors 5 1 9 Rectifier Check Check No 17 There are several different term...

Page 133: ...aulty 4 If no EV generates latching sound in the above step 2 the outdoor unit PCB is faulty 5 If the conductivity is confirmed in the above step 2 mount a good coil which generated latching sound in...

Page 134: ...at the positions in 2 PCB defective Replace PCB 2 No pulse at the pins in 4 Hall IC defective Replace DC fan motor 3 Voltage of 2 and pulse of 4 are both outputted Replace PCB 5 1 13 Fan Motor Positi...

Page 135: ...Check No 37 1 Check the connector s connection 2 Set the power supply to ON and OFF 3 Check if the pulse inputs are conducted four times or not when rotating the fan motor one cycle by hand pins 1 4 7...

Page 136: ...Checks SiBE04 101 128 Service Diagnosis SiBE04 101 book Page 128 Monday October 15 2001 3 08 PM...

Page 137: ...els and Fan Motor 130 1 2 Removal of Electrical Box 134 1 3 Removal of Partition Board and Reactor 140 1 4 Removal of Sound Insulation for Compressor 142 1 5 Removal of 4 way Valve 143 1 6 Removal of...

Page 138: ...ing Be sure to turn off all power supplies before disassembling work Step Procedure Points 1 Removing the outer panels 1 Remove the four screws from the top panel 2 Remove the four screws from the blo...

Page 139: ...move the six screws from the front panel 4 Undo the hook on the top of the motor mount and release the front panel from the hook of right side and the three hooks of left side Step Procedure Points Si...

Page 140: ...off valve cover 6 Remove the drip proof cover Be careful not to lose or damage the drip proof cover Fit it back into position 2 Dismounting the fan motor 1 Disconnect the fan motor connectors from the...

Page 141: ...RXD50 60 71J Removal Procedure 133 2 Remove the washer fitted nut M6 from the propeller fan 3 Remove the four screws from the fan motor Step Procedure Points SiBE04 101 book Page 133 Monday October 1...

Page 142: ...oval of Electrical Box Procedure Warning Be sure to turn off all power supplies before disassembling work Step Procedure Points 1 Disconnect the compressor leads 2 Disconnect the motorized valve leads...

Page 143: ...71J Removal Procedure 135 3 Disconnect the two connectors of the reactor 4 Disconnect the discharge pipe thermistor The lead wire of 4 way valve Step Procedure Points SiBE04 101 book Page 135 Monday...

Page 144: ...36 Removal Procedure 5 Disconnect the outdoor air thermistor 6 Remove the screw from the earth terminal 7 Remove the two screws from the electrical box Step Procedure Points SiBE04 101 book Page 136 M...

Page 145: ...r RXD50 60 71J Removal Procedure 137 8 Remove the three screws from the right side panel 9 Detach the right side panel by lifting it up Step Procedure Points SiBE04 101 book Page 137 Monday October 15...

Page 146: ...J SiBE04 101 138 Removal Procedure 10 Disconnect the heat exchanger thermistor Thermistor mounting spring 11 Take out the electrical box Step Procedure Points SiBE04 101 book Page 138 Monday October 1...

Page 147: ...SiBE04 101 For RXD50 60 71J Removal Procedure 139 12 Components layout Step Procedure Points SiBE04 101 book Page 139 Monday October 15 2001 3 08 PM...

Page 148: ...assembling work Step Procedure Points 1 Removing the partition board 1 Disconnect the compressor leads from the fixture wire clip 2 Remove the two screws from the partition board 3 Pull up the partiti...

Page 149: ...SiBE04 101 For RXD50 60 71J Removal Procedure 141 2 Removing the reactor 1 Remove the screw from the reactor Step Procedure Points SiBE04 101 book Page 141 Monday October 15 2001 3 08 PM...

Page 150: ...all power supplies before disassembling work Step Procedure Points 1 Undo the sound insulation fixture string and draw out the sound insulation 2 Draw out the sound insulation a from the top of the c...

Page 151: ...thermal influence For this purpose wrap the 4 way valve with wet cloth Splash water over the cloth against becoming too hot keep it below 120 C In pulling the pipes be careful not to overtighten them...

Page 152: ...d b in this order Warning If refrigerant gas leaks during the job ventilate the room Bear in mind that if the refrigerant gas is exposed to open flames noxious gas may be generated Caution Be careful...

Page 153: ...Step Procedure Points 1 Removing the peripherals Be careful to avoid burning the compressor terminals or the nameplate 1 To avoid burning damage by gas welding rod detach the terminal cover disconnec...

Page 154: ...frigerant gas leaks during the job ventilate the room Bear in mind that if the refrigerant gas is exposed to open flames noxious gas may be generated Caution Be careful not to get yourself burnt with...

Page 155: ...pendix 147 Part 8 Appendix 1 Piping Diagrams 148 1 1 Indoor Units 148 1 2 Outdoor Units 149 2 Wiring Diagrams 150 2 1 Indoor Units 150 2 2 Outdoor Units 151 SiBE04 101 book Page 147 Monday October 15...

Page 156: ...AN THERMISTOR ON INLET PIPE FAN MOTOR 15 9 15 9 12 7 M 6 4 6 4 9 5 HEAT EXCHANGER REFRIGERANT FLOW ON HEAT EXCH THERMISTOR COOLING HEATING 4D024820A ON INLET PIPE ON HEAT EXCH HEAT EXCHANGER SIROCCO F...

Page 157: ...ELD PIPING FIELD PIPING REFRIGERANT FLOW 12 7 CuT 6 4 CuT HEATING COOLING 3D027642A OUTDOOR UNIT 12 7CuT 12 7CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT THERMISTOR EXCHANGER DISCHARGE...

Page 158: ...NOTE THAT OPERATION WILL TURNED OFF AND THEN BACK RESTART AUTOMATICALLY IF CAUTION 1 3 2 3D025027 outdoor M M M FIELD WIRING SIGNAL RECEIVER LED H1P PCB4 PCB3 CONTROLLER LED H2P S1W WIRELESS REMOTE L...

Page 159: ...TO THE NAMEPLATE FOR THE POWER REQUIREMENTS indoor N L FIELD WIRING 1 3 2 outdoor 76 C X1M X2M TFU N 1 2 3 L X10A GRN RED RED YLW YLW BLK YLW Y1E OUTDOOR M BLK Z1C GRN GRN 125 C WHT YLW WHT ORG BLU B...

Page 160: ...Wiring Diagrams SiBE04 101 152 Appendix SiBE04 101 book Page 152 Monday October 15 2001 3 08 PM...

Page 161: ...F F3 101 Fan Motor 130 Fan Motor Connector Output Check 124 Fan Motor or Related Abnormality 91 93 Fan Motor Position Signal Check 126 Fan Speed Control Indoor Units 27 Outdoor Units 28 Fan Speed Sett...

Page 162: ...32 powerful operation 29 33 Pre heat Operation 30 Printed Circuit Board 8 R Rectifier Check 124 Refrigerant System Check 123 S Service Check 85 Setting for Long Piping 43 Signal Receiver PCB 10 12 Sig...

Page 163: ...Instruction FLX50 60J 65 FTXD50 60 71J 46 Interrupt Due to OL Action or Thermal Fuse Blow Out 102 L Location of Operation Lamp Floor Ceiling Suspended Dual Type 82 Wall Mounted Type 82 Location of th...

Page 164: ...cal Box 134 Removal of Motorized Valve 144 Removal of Outer Panels and Fan Motor 130 Removal of Partition Board and Reactor 140 Removal of Sound Insulation for Compressor 142 RXD50 60 71J Series Contr...

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