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SiBE04-101

Checks

Service Diagnosis

119

5. Checks

5.1

How to Check

5.1.1

Thermistor Resistance Check

Check No.1

Remove the connectors of the thermistors 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

Ω

B=3950

Temperature (˚C)

-20

211.0 (k

Ω

)

-15

150

-10

116.5

-5

67.2

51.9

31.8

10.6

8.7

7.2

SiBE04-101.book Page 119 Monday, October 15, 2001 3:08 PM

Содержание FTXD60JV1B

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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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