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Service Manual - daikin tech.co. uk

1. ts pmi e TI cM KCN ER TCR CRM ONE 1 1 1 1 1 1 GRN LT uw ih ME HR2 L eur 9 2 91 2 MRM20 335A o MUST ie PUES SUPPLY d 222 1 0 2 MRM10 O N BAN tn 11 in 1 Jr Ir le 8790 1 2 2 03 2 V6 NS 1 x BLU fo TO INDOOR UNIT X11A 1 24 FU W U RED V U 1 2 VAL RED el 15 ARN o wr Jo 1 3 NS M 1 1 i zd PCB1 840155951 ls EIE n 1 551 101 580 520 S90 18515 151015 3980 4 1 6 1 6 1 INDOOR 1 5 99950 a 999599 299 1 1 FIELD WIRING 1 556258 dd LLLIIJ 1 4665 6565 8 gr 1 1 595 1 5 M S52 S102 2 TE RIT 1 1 LED AS2 9 9299 OUTDOOR DISCHARGE 1 CONDENSER 1 Swi Swa 1 OUTDOOR 1
2. RECTIFIER g 2 i xil OUTDOOR WHT 2 1 RED 3 1 TRANSMISSION GRN CAUTION CIRCUIT YLW NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS S21 7 TURNED OFF AND THEN BACK AGAIN LED1 LED2 LED3 1 C9 C9 09 5 BLU FG FRAME GROUND H1P H2P lol BRN Fu FUSE ORO j H1 H3 HARNESS PCB5 S3 1 HIP PILOT LAMP INTELLIGENT EYE MIF FAN MOTOR SENSOR le M1S 25 SWING MOTOR PCB1 PCB5 PRINTED CIRCUIT BOARD R1T R2T THERMISTOR INDOOR 51 538 CONNECTOR SIGNALE OPERATION SWITCH wipes XIM TERMINAL STRIP Siw REMOTE 125 PROTECTIVE EARTH CONTROLLER EEE EEE 3D038530U 2 2 Outdoor Unit RX50G2V1B DIU DUM 1 Ret E PETS EC a HUN GRN Bh itt Zic Z5C aem GHR2 FUS 75 nep POWER SUPPLY g E1 E 815A i L 22 1 30A V2 MRM10 9 N N fal lm H
3. Indoor Unit FTX71GV1B Model Outdoor Unit RX71GV1B9 RX71GV1B8 Cooling Heating kW 7 1 2 3 8 5 8 2 2 3 10 2 Es Btu h 24 200 7 800 29 000 28 000 7 800 34 800 kcal h 6 110 1 980 7 310 7 050 1 980 8 770 Running Current Rated A 10 8 10 4 9 9 11 7 11 2 10 7 i ption Rated w 2 350 570 3 200 2 550 520 3 820 Power Factor 98 9 98 2 98 9 99 1 99 0 99 3 vin DIU ww 3 02 4 04 2 66 3 22 4 42 2 67 Bini Liquid mm 6 4 Connections Gas mm 9 15 9 Drain mm 18 0 Heat Insulation Both Liquid and Gas Pipes Max Interunit Piping Length m 30 Max Interunit Height Difference m 20 Chargeless m 10 rud ot Additional Charge of gm 20 Indoor Unit FTX71GV1B Front Panel Color White H 17 4 614 19 7 696 M m min 14 6 516 16 9 597 11 6 410 14 3 505 SL 10 6 374 12 7 448 Type Cross Flow Fan Fan Motor Output Ww 43 Speed Steps 5 Steps Quiet Auto Air Direction Control Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 21 0 20 0 19 0 28 0 27 0 26 Power Consumption Rated 45 45 45 60 60 60 Power Factor 97 4 97 8 98 7 97 4 96 6 96 2 Temperature Control Microcomputer Control Dimensions H x W x D mm 290 x 1 050 x 238 Packaged Dimensions H x W x D mm 337 x 1 147 x 366 Weight Mass kg 12 Gross Weight Gross Mass kg 17 Sound iocis H M L SL dB A
4. 50 3 SERVICE CHECK FUFICIOFD rr 51 4 Troubleshooting diese rie nicht aab Famil ade ciii decken am 54 4 1 Error Codes and 54 42 Indoor Unit PGB Abnormality ortis od reet petet od 55 4 3 Freeze up Protection Control Heating Peak cut Control 56 4 4 Fan Motor DC Motor or Related 57 4 5 Thermistor or Related Abnormality Indoor 59 46 Refrigerant Shortage eae ADR 60 4 7 Low voltage Detection or Over voltage 62 4 8 Signal Transmission Error Between Indoor Unit and Outdoor Unit 64 4 9 Signal Transmission Error on Outdoor Unit PCB RX50 60G2V1B 71 Class 66 4 10 Unspecified Voltage Between Indoor Unit and Outdoor Unit 67 4 11 Outdoor Unit PCB Abnormialily 34 2 ete erect bead oo Gate 68 4 12 OL Activation Compressor 70 4 13 Compressor SOCK unsere dii a ee prets IRR ene eie 72 4 14 DC Fan LOCK cien oe e haer 73 4 15 Input Overcurrent Detection 74 4 16 Four Way Valve 75 4 17 Discharge Pipe Temperature 77 4 18 High Pressure Cont
5. OQ 4 21 Z4C FERRITE CORE X1M X2M TERMINAL STRIP MRM10 MRM20 L LIVE M1C COMPRESSOR MOTOR ELECTRONIC EXPANSION VALVE COIL MRC W MAGNETIC RELAY N NEUTRAL FAN MOTOR V2 V5 V6 V11 VARISTOR R1T THERMISTOR SW1 FORCED OPERATION ON OFF SW L1R REACTOR SA2 SURGE ARRESTER 82 5102 CONNECTOR SW4 LOCAL SETTING SW SW4 Q1L OVERLOAD PROTECTOR FU1 FU2 FU3 FUSE LEDA PILOT LAMP PM1 POWER MODULE AC1 AC2 PCB1 2 PRINTED CIRCUIT BOARD U V W X11A REVERSING SOLENOID VALVE E1 E2 SHEET METAL TERMINAL STRIP FIXED PLATE 3D050706M HR1 HR2 CONNECTOR indoor INDOOR UNIT DAN i D i B POWER SUPPLY NOTE REFER THE NAMEPLATE FOR THE POWER REQUIREMENTS C7 C8 CAPACITOR MER DB1 DB3 DIODE BRIDGE INCASE OF 5 AP m FU2 FU FUSE COOLING ONLY OUTDOOR DISCHARGE FUA FIELD FUSE CONDENSER IPM INTELLIGENT POWER MODULE E A cms 0101 EARTHLEAKDETECTOR VI V2 V3 VARISTOR PCB1 PRINTED CIRCUIT TERMINAL STRIP MIC COMPRESSOR MOTOR S10 S11 12 20 VIE ELECTRONIC EXPANSION VALVE COIL ui MOTOR 540 50 70 80 90 Yis REVERSING SOLENOID VALVE COIL B MAGNETIC RELAY HL3 X11A X12A CONNECTOR Z1C Z
6. ON 2 OFF Fan ON OFF J pulse L pulse Electronic expansion valve opening K pulse Initial opening R19555 50 class 60 class 71 class A minutes 44 44 38 B C 4 12 4 12 4 12 C Hz 55 55 39 D Hz 90 90 62 E seconds 60 60 60 F seconds 120 120 120 G seconds 340 340 530 H seconds 30 50 60 J pulse 450 450 450 K pulse 450 450 350 L pulse 450 450 400 The same value continues 39 Function and Control SiBE041029EB Control Specification 3 11 Electronic Expansion Valve Control Outline The following items are included in the electronic expansion valve control Electronic expansion valve is fully closed 1 Electronic expansion valve is fully closed when turning on the power 2 Pressure equalizing control Open Control Electronic expansion valve control when starting operation Electronic expansion valve control when the frequency changes Electronic expansion valve control for defrosting Electronic expansion valve control when the discharge pipe temperature is abnormally high Electronic expansion valve control when the discharge pipe thermistor is disconnected Feedback Control Target discharge pipe temperature control Detail The followings are the examples of electronic expansion valve control which function
7. Printed Circuit Board Connector Wiring Diagram 10 Indoor Unit SiBE041029EB PCB 2 Signal Receiver PCB 1 S29 Connector for control PCB Forced cooling operation ON OFF button Refer to page 104 for detail 2P099167 1 PCB 3 Buzzer PCB 1 527 2 S38 3 RTH1 R1T Connector for control PCB Connector for display PCB Room temperature thermistor 2 0991 1 2 099167 1 1 627 538 F 23 538 lt 91850 4 Display Connector for buzzer PCB LED for operation green LED for timer yellow LED for HOME LEAVE operation red DISPLAY FP LED2 LED3 S37 2P099167 1 PCB 1 S37 2 LED1 H1P 3 LED2 H2P 4 LED3 H3P PCB 5 INTELLIGENT 1 S36 EYE Sensor PCB Connector for control PCB 536 3 099913 1 Printed Circuit Board Connector Wiring Diagram SiBE041029EB Outdoor Unit 2 Outdoor Unit 2 1 RX50 60G2V1B 71 Class PCB 1 Main PCB 1 V6 V11 V9 V100 RX50 60G2V1B Connector for terminal board indoor outdoor transmission Connector for electronic expansion valve coil Connector for overload protector Connector for service monitor PCB Connector for fan motor Connector for four way valve coil Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe Connector for terminal board power supply Connector for reactor Connector for eart
8. LE co AX Forced cooling operation ON OFF button R19531 Outdoor Unit RX50 60G3V1B Forced cooling operation 9 ON OFF button SW1 Push R19532 Screwdriver AN Caution When pressing the button do not touch the terminal board It has a high voltage and may cause electric shock Trial Operation and Field Settings 104 Trial Operation SiBE041029EB 3 Trial Operation Outline Carry out the trial operation in accordance with the operation manual to ensure that all functions and parts such as flap movement are working properly Trial operation should be carried out in either cooling or heating operation Detail 1 Measure the power supply voltage and make sure that it falls within the specified range 2 In cooling operation select the lowest programmable temperature 18 C in heating operation select the highest programmable temperature 30 C Trial operation may be disabled in either operation mode depending on the room temperature After trial operation is complete set the temperature to a normal level 26 C 28 C in cooling 20 C 24 C in heating operation For protection the system does not start for 3 minutes after it is turned off ARC433 Series 1 Press the ON OFF button to turn on the system 2 Press the center of the TEMP butt
9. Discharge pipe temperature lt D C OFF condition Discharge pipe temperature gt E C Radiation fin temperature gt 90 C A B C C C D C E C RX50 60G2V1B 71 Class 10 6 8 10 5 12 RX50 60G3V1B 2 5 0 2 10 12 3 3 2 Four Way Valve Switching Outline Detail In heating operation current is conducted and in cooling operation and defrost control current is not conducted In order to eliminate the switching sound as the four way valve coil switches from ON to OFF when the heating is stopped the OFF delay switch of the four way valve is carried out OFF delay switch of four way valve The four way valve coil is energized for 150 seconds after the operation is stopped 33 Function and Control SiBE041029EB Control Specification 3 3 3 Four Way Valve Operation Compensation Outline At the beginning of operation as the four way valve is switched the pressure difference to activate the four way valve is acquired when the output frequency is higher than a certain fixed frequency for a certain fixed time Detail Starting Conditions 1 When the compressor starts and the four way valve switches from OFF to ON 2 When the four way valve switches from ON to OFF during operation 3 When the compressor starts after resetting 4 When the compressor starts after the fault of four way valve switching The lower limit of frequency keeps A Hz for B seconds with any conditi
10. 41 2 88 4 24 Radiation Fin Temperature Rise 89 4 25 Output Overcurrent Detection 91 CHOC asa tto Seta Aude 93 5 1 Thermistor Resistance 93 5 2 Fan Motor Connector Output 94 5 3 Power Supply Waveforms 94 5 4 Electronic Expansion Valve 94 5 5 Four Way Valve Performance 95 5 6 Inverter Unit Refrigerant System 95 5 7 Inverter Analyzer Check Rp besos tend 96 5 8 Rotation Pulse Check on the Outdoor Unit 97 5 9 Installation Condition 98 5 10 Discharge Pressure 98 5 11 Outdoor Fan System Check rite te o e Ree 99 5 12 Main Circuit Short ioc epp Rete ce EE Manes 99 47 Service Diagnosis SiBE041029EB 5 13 Capacitor Voltage Check 5 14 Power Module Check Service Diagnosis 48 Troubleshooting with LED SiBE041029EB 1 Troubleshooting with LED 1 1 Indoor Unit Operation Lamp The operation lamp blinks when any of the following errors is detected 1 When a protection devi
11. OUTDOOR TEMPERATURE 7 9 THERMISTOR HEADER 42 9 CUT D 7 9 lt 7 9 CuT HEAT EXCHANGER CONDENSER THERMISTOR ELECTRONIC 7 EXPANSION RECEIVER 4 4 0 CuT VALVE 7 9 CUT 9 8CuT 9 5CuT 9 5 95CuT 9 5 i DISTRIBUTOR FILTER FILTER 8 I PROPELLER FAN CAPILLARY TUBE au HE 5 25 AWAY as ex 5 TL 15 09 2 ONHEATING 15 9 g N gt 7 8 79 o Ln MUFFLER 5 pen FIELD PIPING DISCHARGE S 9 9 5 CuT LIQUID 6 4 CuT THERMISTOR GAS LINE REFRIGERANT FLOW STOP COOLING COMPRESSOR ACCUMULATOR ACCUMULATOR FIELD PIPING HEATING 15 9 15 9 GAS 15 9 CuT 3D054593N Appendix 112 Wiring Diagrams SiBE041029EB 2 Wiring Diagrams 2 1 Indoor Unit FTX50 60 71GV1B FIELD WIRING 1 1 1 r 1 1 1
12. Refrigerant shortage is detected by checking the discharge pipe temperature and the opening of the electronic expansion valve If the refrigerant is short the discharge pipe temperature tends to rise Refrigerant shortage detection I The following conditions continue for 7 minutes RX50 60G2V1B 71 class Input current lt A x output frequency B Output frequency gt C A 2 B A C Hz RX50 60G2V1B 18 1000 0 7 55 71 class 27 1000 2 0 40 lt RX50 60G3V1B gt Input current x input voltage lt D x output frequency E Output frequency gt D W F Hz RX50 60G3V1B 2000 256 181 55 Refrigerant shortage detection 11 The following conditions continue for 80 seconds Opening of the electronic expansion valve gt G Discharge pipe temperature gt H x target discharge pipe temperature J G pulse J RX50 60G2V1B 480 255 256 cooling 20 heating 45 RX50 60G3V1B 480 128 128 cooling 60 heating 45 71 class 450 255 256 60 error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error m Disconnection of the discharge pipe thermistor indoor or outdoor heat exchanger thermistor room or outdoor temperature thermistor Closed stop valve Refrigerant shortage refrigerant leakage Poor compression performance of compressor Defe
13. re Ch eem Dt 10 2 Outdoor Ub 12 2 1 RX50 60G2V1B 71 006000000 12 2 2 RX50 60GSV 1B ER 14 Part 4 Function and 16 IVALICE ONS aea bete rmi rives oth Penna Dt te E e EE 17 1 1 Temperature Control rera tene edu duce tena evum reds nine adt 17 12 Frequency Principle pen o tete ru tiun eie rt 17 1 3 Airflow Direction 19 1 4 Fan Speed Control for 20 1 5 Program Dry Operation et caer heen Mate aes 21 1 6 Automatic ODeraltlore seme ad ake ees MO ER RS 22 1 7 dhennostat el ene e 23 18 NIGHT SET MOG iii into Dr d 24 1 9 HOME LEAVE Operation ottenere ee aee e Sem de 24 1 10 INTELLIGENT EYE Operation eda pedem adeste eer 26 1 11 Inverter POWERFUL Operation 27 1 12 Clock Setting o ree e ia pete ened eee oat ha 27 1 13 Other FUNCIONS 28 2 TutriciortoP 29 3 Gontrol SHeelll Galleri aede ac de aa ex
14. DAIKIN e SiBE041029EB Service Manual Inverter Pair Wall Mounted Type G Series 2 A 2 22 Zs 555 S SS pb Applied Models Inverter Pair Heat Pump SiBE041029EB Inverter Pair Wall Mounted Type eHeat Pump Indoor Unit FTX50GV1B FTX60GV1B FTX71GV1B Outdoor Unit RX50G2V1B RX50G3V1B RX60G2V1B RX60G3V1B RX71GV1B RX71GV1B9 RX71GV1B8 G Series Table of Contents SiBE041029EB Ta E V 1 1 Warnings and Cautions Regarding Safety of Workers V 1 2 Warnings and Cautions Regarding Safety of Users vii X Part 4 List of Pune HONS 1 T e eet 2 Part 2 Specifications 4 1 SSDOCITIGSTORS aine caters du presa cc td 5 Part 3 Printed Circuit Board Connector Wiring Diagram 9 T I Ti erae eee ne Ue Aba
15. R 410A refrigerant models be sure to use pipes flare nuts and tools for the exclusive use of the R 32 R 410A refrigerant The use of materials for R 22 refrigerant models may cause a serious accident such as a damage of refrigerant cycle as well as an equipment failure Do not mix air or gas other than the specified refrigerant R 32 R 410A R 22 in the refrigerant system If air enters the refrigerating system an excessively high pressure results causing equipment damage and injury Caution Do not repair the electrical components with wet hands Working on the equipment with wet hands may cause an electrical 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 wet place to avoid electrical shocks Be sure to turn off the power switch and unplug the power cable when cleaning the equipment The internal fan rotates at a high speed and may cause injury Be sure to conduct repair work with appropriate tools The use of inappropriate tools may cause injury Be sure to check that the refrigerating cycle section has cooled down enough before conducting repair work Working on the unit when the refrigerating cycle section is hot may cause burns vi Safety Cautions SiBE041029EB Caution Use the wel
16. Selects the operation mode ML AUTO DRY COOL gt l9 FAN QUIET button Starts OUTDOOR UNIT QUIET operation OUTDOOR UNIT QUIET operation is not available in FAN and DRY operation MODE amp FAN IC G OUTDOOR UNIT QUIET operation and POWERFUL operation cannot be used at the same time Priority is given to the function you pressed last SENSOR button INTELLIGENT EYE operation To start INTELLIGENT EYE operation press the SENSOR button 2 is displayed on the LCD To cancel the INTELLIGENT EYE operation press the SENSOR button again 2 disappears from the LCD ON TIMER button Press this button and adjust the day and time with the TIMER setting button Press this button again to complete TIMER setting TIMER Setting button OFF TIMER button 9 Changes the ON OFF TIMER Press this button and adjust settings the day and time with the TIMER setting button Press this button again to complete TIMER setting FAN setting button Selects the airflow rate setting every time you press this button Auto Indoor unit quiet EL High Middle high Middle n indoor unit quiet operation operation sound becomes weak The airflow rate also decreases In DRY operation the airflow rate setting is not available SWING button Adjusts the airflow direction When you press the SW
17. 1 and No 2 on the terminal board and check the waveform disturbance W Checkif the power supply waveform is a sine wave Fig 1 W Checkifthere is waveform disturbance near the zero cross sections circled in Fig 2 Fig 1 Fig 2 R1444 R1736 5 4 Electronic Expansion Valve Check Check No 12 Conduct the followings to check the electronic expansion valve EV 1 Check if the EV connector is correctly connected to the PCB 2 the power off and on again and check if the EV generates a latching sound 3 If the EV does not generate a latching sound in the above step 2 disconnect the connector and check the continuity using a multimeter 4 Check the continuity between the pins 1 6 3 6 2 5 4 5 between the pins 1 6 2 6 3 6 4 6 for the harness 5P models If there is no continuity between the pins the EV coil is faulty 5 If the continuity is confirmed in step 3 the outdoor unit PCB is faulty Harness 6P Harness 5P 1 6 1 6 3 6 5 2 6 520 6P Connector Check 5 5 520 6P Connector Check 4 6 12345686 12345686 R16385 R16386 Service Diagnosis 94 SiBE041029EB 5 5 Four Way Valve Performance Check Check No 13 5 6 Inverter Unit Refrigerant System Check Check No 14 Turn the power off and then on again Start heating operation 580 voltage at 220 240 VAC with compressor on Fig 1 YES Four way valve c
18. 12 0 14 0 12 0 15 0 16 0 17 75 Limitation of current dropping and stop value according to the outdoor temperature The current drops when outdoor temperature becomes higher than a certain level depending on the model Function and Control 36 Control Specification SiBE041029EB 3 6 Freeze up Protection Control During cooling operation the signal sent from the indoor unit controls the operating frequency limitation and prevents freezing of the indoor heat exchanger The signal from the indoor unit is divided into zones The operating frequency limitation is judged with the indoor heat exchanger temperature Indoor heat exchanger thermistor temperature 5515 555 5 5255455555522 Reset zone A C Up zone B C Keep zone Dropping zone Stop zone R14718 C C C 7 5 3 3 7 Heating Peak cut Control During heating operation the indoor heat exchanger temperature determines the frequency upper limit to prevent abnormal high pressure The operating frequency limitation is judged with the indoor heat exchanger temperature t Stop zone A C Dropping zone Keep zone E C Indoor heat exchanger Reset zone thermistor temperature 814645 2 Control Stop zone When the temperature reaches the stop zone the compressor stops Dropping zone The upper limit of frequency decreases Keep zo
19. 3 02 3 86 2 79 3 43 4 25 2 85 zr Liquid mm 6 4 6 4 mm 9127 127 Drain mm 18 0 18 0 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Max Interunit Piping Length m 30 30 Max Interunit Height Difference m 20 20 Chargeless m 10 10 Charge of gm 20 20 Indoor Unit FTX50GV1B FTX60GV1B Front Panel Color White White H 14 7 519 16 1 568 16 2 572 17 4 614 M 12 4 438 13 9 491 13 6 480 15 1 533 AI Rate cfm 10 3 364 11 5 406 114 403 127 448 SL 9 5 335 10 2 360 10 2 360 11 4 403 Type Cross Flow Fan Cross Flow Fan Fan Motor Output Ww 43 43 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto 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 16 0 15 0 15 0 17 0 16 0 16 0 19 0 18 0 17 0 21 0 20 0 19 Power Consumption Rated Ww 34 36 40 45 Power Factor 926 96 6 98 6 94 4 96 3 97 8 93 8 95 7 96 6 98 0 97 4 97 8 98 7 Temperature Control Microcomputer Control Microcomputer Control Dimensions H x W x D mm 290 x 1 050 x 238 290 x 1 050 x 238 Packaged Dimensions H x W x D mm 337 x 1 147 x 366 337 x 1 147 x 366 Weight Mass kg 12 12 Gross Weight Gross Mass kg 17 17 Pressure H M L SL dB A 43 39 34 31 42 38 33 30 45 41 36 33 44 40 35 32 Sound Power Lev
20. 5 2 1 Press the HOME LEAVE button Make sure is displayed on the remote controller 2 Adjust the temperature with the W button 3 Adjust the airflow rate with the FAN button HOME LEAVE operation will run with these settings the next time you start HOME LEAVE operation To change the recorded information repeat steps 1 3 nm Note 1 Thesettemperature and airflow rate are recorded in the remote controller When the remote controller is reset due to battery replacement the temperature and airflow rate for HOME LEAVE operation needs to be set again 2 The operation mode cannot be changed while HOME LEAVE operation is being used 25 Function and Control SiBE041029EB Main Functions 1 10 INTELLIGENT EYE Operation Outline Detail This function detects the presence of humans in the room with a motion sensor INTELLIGENT EYE and reduces the capacity when there is nobody in the room in order to save electricity 1 Detection method by INTELLIGENT EYE If the sensor detects the outputs 10 times sec or more it judges humans are in the room 1 sampling 20 msec Sensor output High Low Human detection ON Signal OFF R19471 W The sensor detects human motion by receiving infrared rays and displays the pulse wave output W The microcomputer in the indoor unit carries out a sampling every 20 msec and if it detects 10 cycles of the w
21. E HL2 HN2 5 HL4 HN4 FU1 FU3 V2 V3 Swi YVEAMB 5 275852 m J Connector for S10 on main PCB Connector for terminal board Terminal for earth wire Connector for HL3 HN3 on main PCB Connector for S12 on main PCB Fuse 3 15 A 250 V Fuse 30 A 250 V Varistor Forced cooling operation ON OFF button Refer to page 104 for detail BRN csa 158x12 3P273862 4 Printed Circuit Board Connector Wiring Diagram 14 Outdoor Unit SiBE041029EB PCB 2 Main PCB 1 S10 S12 S20 4 S40 S50 S70 S80 S90 S80 S70 Connector for S11 on filter PCB Connector for HL4 HN4 on filter PCB Connector for electronic expansion valve coil Connector for overload protector Connector for magnetic relay Connector for fan motor Connector for four way valve coil Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe Connector for HL2 HN2 on filter PCB Terminal for compressor Fuse 3 15 A 250 V LED for service monitor green Varistor Jumper for facility setting Refer to page 107 for detail Jumper for improvement of defrost performance Refer to page 108 for detail FU2 S20 S40 S90 540 Socal Gs x 2P273854 EEE 3PCBega 71 m HN3 HL3 2P273854 7 N Caution Replace the PCB if you accidentally cut the jumpers other than J6 and
22. N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Check the combination of the indoor and outdoor unit NO gt Match the compatible models Are the connecting wires connected property NO Correct the connection Check the code numbers 2P012345 for example of the indoor and outdoor unit PCB with the Parts List Matched compatibly NE gt Change for the correct PCB YES gt Replace the indoor unit PCB or the outdoor unit PCB R19506 67 Service Diagnosis SiBE041029EB Troubleshooting 4 11 Outdoor Unit PCB Abnormality Error Code Method of Error Detection Error Decision Conditions Supposed Causes Troubleshooting 1 The system checks if the microprocessor is working in order The system checks if the zero cross signal comes in properly The microprocessor program runs out of control The zero cross signal is not detected Defective outdoor unit PCB Broken harness between PCBs Noise Momentary drop of voltage Momentary power failure RX50 60G2V1B 71 class N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Turn on the power again YES Error again gt Replace the outdoor unit PCB 1 Check if the unit is grounded NO Groun
23. RX50 60G3V1B R19561 Diode bridge ePe75854 fl 5 71 R19562 101 Service Diagnosis SiBE041029EB Part 7 Trial Operation and Field Settings 1 Pump Down tno oon dope RE 107 2 Forced Cooling 108 S Mia Opera O ERES m 109 Ax Field Seto Sa oni ri iue a r aN 110 41 When 2 Units are installed in 1 272 110 4 2 Facility Setting Cooling at Low Outdoor Temperature 111 4 3 Jumper and Switch 112 5 Silicon Grease on Power Transistor Diode Bridge 113 Trial Operation and Field Settings 102 Pump Down Operation SiBE041029EB 1 Pump Down Operation Outline In order to protect the environment be sure to conduct pump down operation when relocating or disposing of the unit Detail 1 Remove the valve caps from the liquid stop valve and the gas stop valve 2 Carry out forced cooling operation 3 After 5 to 10 minutes close the liquid stop valve with a hexagonal wrench 4 After 2 to 3 minutes close the gas stop valve and stop the forced cooling operation 50 60 class Gas stop valve Service port R13628 71 class Service port Hexagonal wrench Close Liquid stop valve Valve cap R14474
24. Refer to page 104 for forced cooling operation 103 Trial Operation and Field Settings SiBE041029EB Forced Cooling Operation 2 Forced Cooling Operation Item Forced Cooling Conditions The forced cooling operation is allowed when both of the following conditions are met 1 The outdoor unit is not abnormal and not in the 3 minute standby mode 2 The outdoor unit is not operating Start The forced cooling operation starts when any of the following conditions are fulfilled 1 Press the forced cooling operation ON OFF button SW1 on the indoor unit for 5 seconds 2 Press the forced cooling operation ON OFF button SW1 on the outdoor unit within around 3 minutes after power is supplied Command 50 60 class 66 Hz frequency 71 class 31 Hz End The forced cooling operation ends when any of the following conditions are fulfilled 1 The operation ends automatically after 15 minutes 2 Press the forced cooling operation ON OFF button SW1 on the indoor unit again 3 Press the ON OFF button on the remote controller 4 Press the forced cooling operation ON OFF button SW1 on the outdoor unit Others Protection functions have priority over all other functions during forced cooling operation Indoor Unit Indoor unit ON OFF button R19650 Outdoor Unit RX50 60G2V1B 71 class The illustration is for 71 class as representative NS m ON E
25. Replace the outdoor unit Current Capacitor charged when PCB guideline the indoor unit or outdoor unit main relay turns on Rising with increasing frequency Check No 21 Check the capacitor voltage Turn off the power Disconnect the harnesses U V and W Check No 15 Inverter analyzer i i RSUK0917C Measure the rectifier input voltage Check with the inverter analyzer YES Correct the power supply or replace the outdoor unit PCB NO Turn off the power and reconnect the harnesses Then turn on the power again and restart operation Compressor running Replace the compressor gt Replace the outdoor unit Voltage PCB within the allowable NO range Power supply gt Check the power supply voltage 1590 voltage gt Replace the outdoor unit PCB R19400 85 Service Diagnosis SiBE041029EB Troubleshooting 4 22 Thermistor or Related Abnormality Outdoor Unit Error Code Method of Error Detection Error Decision Conditions Supposed Causes Troubleshooting m y This fault is identified based on the thermistor input voltage to the microcomputer A thermistor fault is identified based on the temperature sensed by each thermistor The thermistor input voltage is above 4 96 V or below 0 04 V with th
26. heating operation including POWERFUL operation or while the operation is stopped A mark representing HOME LEAVE is indicated on the display of the remote controller and the LED red of indoor unit representing HOME LEAVE lights up It goes out when the operation is stopped m If this button is pressed in POWERFUL operation the POWERFUL operation is canceled and this function becomes effective m The HOME LEAVE button is ineffective in dry operation and fan operation Function and Control 24 Main Functions SiBE041029EB End of Function The function ends when the HOME LEAVE button is pressed again during HOME LEAVE operation or when the POWERFUL button is pressed lt Cooling gt HOME LEAVE operation set temp HOME LEAVE operation Set temp Normal operation Start Stop Heating al pw 7 j 1 b l l HOME LEAVE operation HOME LEAVE operation Normal operation L set temp Start Stop Setting Temperature and Airflow Rate Normal operation Time R11660 Normal operation Time R11661 When using HOME LEAVE operation for the first time set your preferred temperature and airflow rate for HOME LEAVE operation Initial setting Selectable range Temperature Airflow rate Temperature Airflow rate Cooling 25 C A 18 32 C 5 steps fA 24 Heating 25 C A 10 30 C 5 steps
27. 2 4 RX50 60G2V1B 71 12 2 2 RX50 60G9VTB xui 14 Printed Circuit Board Connector Wiring Diagram SiBE041029EB Indoor Unit 1 Indoor Unit PCB 1 Control PCB 1 S1 S6 S8 S21 S26 6 S28 S32 S35 H1 H2 H3 0 1 12 JB 13 LED A 14 FU1 Fu 15 V1 H1 S35 Connector for fan motor Connector for swing motor horizontal blades Connector for swing motor vertical blades Connector for centralized control HA Connector for buzzer PCB Connector for signal receiver PCB Connector for indoor heat exchanger thermistor Connector for INTELLIGENT EYE sensor PCB Connector for terminal board indoor outdoor transmission Connector for terminal board frame ground Address setting jumper Refer to page 106 for detail Fan speed setting when compressor stops for thermostat OFF Power failure recovery function auto restart Refer to page 108 for detail LED for service monitor green Fuse 3 15 A 250 V Varistor iu 07 ps eur mm Cu LED A JA JB JC 2P099167 1 S28 S26 Caution gt the PCB if you accidentally cut the jumpers other than JA JB and JC Jumpers are necessary for electronic circuit Improper operation may occur if you cut any of them
28. 65 R 410A R 410A Refrigerant Change kg 1 50 1 50 Airflow Rate H m min 48 9 1 727 45 0 1 589 50 9 1 797 46 3 1 635 SL cfm 417 1 472 41 7 1 472 42 4 1 497 42 4 1 497 Fan Type Propeller Propeller Motor Output Ww 53 53 Running Current Rated A 7 04 6 75 6 45 7 23 6 94 6 64 9 01 8 62 8 23 9 19 8 80 8 41 Power Consumption Rated Ww 1 516 1 516 1 516 1 564 1 564 1 564 1 950 1 950 1 950 1 995 1 995 1 995 Power Factor 90 97 9 97 6 97 9 98 3 98 0 98 1 98 4 98 4 98 7 98 7 98 6 98 8 Starting Current A 7 4 9 4 Dimensions H x W x D mm 735 x 825 x 300 735 x 825 x 300 Packaged Dimensions H x W x D mm 797 x 992 x 390 797 x 992 x 390 Weight Mass kg 47 47 Gross Weight Gross Mass kg 52 52 Sound Pressure H SL dB A 47 44 48 45 49 46 49 46 Level Pound Power i dB 63 64 63 63 Drawing No 30080645 30080646 Note The data are based on the conditions shown in the table below Conversion Formulae Cooling Heating Piping Length kcal h KW x 860 Indoor 27 CDB 19 CWB Indoor 20 5m Btu h kW x 3412 Outdoor 35 CDB 24 CWB Outdoor 7 CDB 6 CWB cfm m min x 35 3 7 Specifications SiBE041029EB Specifications 50 Hz 220 230 240 V
29. Check the reactor unit PCB and measure the resistance value between reactor terminals with multimeter NO gt Replace the reactor YES Disconnect the compressor relay harness Check the compressor from the outdoor unit PCB and measure the resistance value between the each 3 terminals of the compressor with tester 10 or less between each terminal NO Replace the compressor or the compressor relay harness Restart the operation again and if the error occurs again replace the outdoor unit PCB R19557 79 Service Diagnosis SiBE041029EB Troubleshooting 4 19 2 RX50 60G3V1B Error Code Method of Error Detection Error Decision Conditions Supposed Causes Troubleshooting E V The system checks the DC current before the compressor starts The DC current before compressor start up is out of the range 0 5 4 5 V sensor output converted to voltage value W The DC voltage before compressor start up is below 50 V W Broken or disconnected harness W Defective outdoor unit PCB Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Check the relay harness for the compressor Is the harness broken XES gt Replace the harness Turn off the power and turn it on again Restart operation NO and error displayed gt No problem
30. OFF Room thermistor temperature target temperature A 1 5 C B 1 0 C ON R12320 Refer to Temperature Control on page 17 for detail 23 Function and Control SiBE041029EB Main Functions 1 8 NIGHT SET Mode Outline When the OFF TIMER is set NIGHT SET Mode is automatically activated NIGHT SET Mode keeps the airflow rate setting Detail NIGHT SET Mode continues operation at the target temperature for the first one hour then 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 to ensure comfortable sleeping conditions and also conserves electricity Cooling Target temperature ecce ee ec rie Operation stops at the set hours TIMER operation 40 5 C NIGHT SET Mode ON temperature shift R18917 lt Heating gt Target temperature 1 9 HOME LEAVE Operation Outline HOME LEAVE operation is a function that allows you to record your preferred set temperature and airflow rate You can start your preferred operation mode simply by pressing the HOME LEAVE button on the remote controller Detail The indoor unit is operated according to the set temperature and airflow rate for HOME LEAVE which were preset in the memory of the remote controller Start of Function The function starts when the HOME LEAVE button is pressed in cooling operation
31. Power Transistor Diode Bridge Outline Apply the specified silicon grease to the heat radiation part of a power transistor diode bridge when you replace an outdoor unit PCB The silicon grease encourages the heat radiation of a power transistor diode bridge Detail 1 Wipe off the old silicon grease completely 2 Apply the silicon grease evenly See the illustrations below for examples of application 3 Tighten the screws of the power transistor diode bridge 4 Make sure that the heat radiation parts are firmly contacted to the radiation fin Note Smoke emission may be caused by bad heat radiation when the silicon grease is not appropriately applied m OK Evenly applied Power transistor diode bridge PCB S Radiation Silicon grease R18015 NG Not evenly applied T T 7 1 1 R18016 NG Foreign matter is stuck T ia co l Y Foreign matter R18017 109 Trial Operation and Field Settings SiBE041029EB Part 8 Appendix 1 Piping Diagrams Tek Indoor Unit eoo m emt m Feu e que ore iere 111 1 22 ui eic e oro ed eo rt ee 111 2
32. any solder cracking on the PCB 4 If any solder cracking is found replace the PCB or repair the soldered section If there is no solder cracking replace the PCB Caution 1 When the output frequency is low the LEDs blink slowly As the output frequency increases the LEDs blink quicker The LEDs look like they are lit 2 On completion of the inverter analyzer diagnosis be sure to re crimp the FASTON terminals Otherwise the terminals may be burned due to loosening Direction of crimp This size is shortened by the crimp FASTON terminal R19646 5 8 Rotation Pulse Check on the Outdoor Unit PCB Check No 16 Make sure that the voltage of 320 30 V is applied Set operation off and power off Disconnect the connector S70 Check that the voltage between the pins 4 7 is 320 VDC Check that the control voltage between the pins 3 4 is 15 VDC Check that the rotation command voltage between the pins 2 4 is 0 6 5 VDC Keep operation off and power off Connect the connector S70 Check whether 4 pulses 0 15 are output at the pins 1 4 when the fan motor is rotated 1 turn by hand DARN When the fuse is melted check the outdoor fan motor for proper function If NG in step 2 Defective PCB Replace the outdoor unit PCB If NG in step 4 Defective Hall Replace the outdoor fan motor If OK in both steps 2 and 4 Replace the outdoor unit PCB PCB Actual rotation pulse
33. gt Replace the stop valve expansion valve Check No 01 NG Check the outdoor heat gt Replace the electronic expansion valve or the coil Replace the outdoor unit PCB exchanger thermistor OK gt Replace the outdoor heat exchanger thermistor gt Replace the outdoor unit PCB R15667 Service Diagnosis 78 Troubleshooting SiBE041029EB 4 19 Compressor System Sensor Abnormality 4 19 1 RX50 60G2V1B 71 Class Error Code Ha Method of Error W The system checks the power supply voltage and the DC voltage before the compressor Detection starts W The system checks the compressor current right after the compressor starts Error Decision W The power supply voltage and the DC voltage is obviously low or high Conditions W The compressor current does not run when the compressor starts Supposed m Disconnection of reactor Causes Disconnection of compressor harness W Defective outdoor unit PCB Defective compressor Troubleshooting N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Turn off the power Check the connection of the reactor NO Connection OK Connect the reactor properly Check the connection of the compressor NO Connection OK Connect the compressor properly Disconnect the reactor from the outdoor
34. input 0 15 VDC Rotation command voltage 0 6 5 VDC Control voltage 15 VDC 320 VDC R19655 97 Service Diagnosis SiBE041029EB Check 5 9 Installation Condition Check Check No 17 Installation condition check Check the allowable dimensions of the air suction and discharge area NG gt Change the installation location or direction Is the discharged air short circuited Change the installation location or direction Is the outdoor heat YES exchanger very dirty Clean the outdoor heat exchanger 15 the airflow blocked by obstacles or winds blowing in the direction NO gt Check the outdoor temperature The outdoor temperature should be within the operation range Change the installation location or direction R19401 5 10 Discharge Pressure Check Check No 18 Discharge pressure check NO Replace the compressor YES NO Is the stop valve open gt Open the stop valve YES YES Is the gt Replace the pipe installed at deformed the site Is the air filter or indoor outdoor heat exchanger dirty YES Replace the compressor gt Clean the dirty air filter or indoor outdoor heat exchanger R19385 Service Diagnosis 98 SiBE041029EB 5 11 Outdoor Fan System Check Check No 1
35. m When the frequency decreases the rotation speed of the compressor decreases resulting in a decrease of refrigerant circulation This leads to a smaller amount of heat exchange per unit Function and Control SiBE041029EB Main Functions Drawing of Inverter Inverter Features Frequency Limits Forced Cooling Operation The following drawing shows a schematic view of the inverter principle Refrigerant circulation rate high high speed Amount of heat Amount of heat exchanged air large L exchanged air large oS Ls ai Amount of heat Amount of heat exchanged air small 4 exchanged air small low speed uu 50 Hz ity enisi Hz freq variable Venable gt Refrigerant circulation rate low R2812 The inverter provides the following features The regulating capacity can be changed according to the changes in the outdoor temperature and cooling heating load Quick heating and quick cooling The rotation speed of the compressor is increased when starting the heating or cooling This enables to reach the set temperature quickly Even during extreme cold weather high capacity is achieved It is maintained even when the outdoor temperature is 2 C Comfortable air conditioning A fine adjustment is integrated to keep the room temperature constant Energy sav
36. maximum distance for communication is approximately 7 m HOME LEAVE button Press this button to start HOME LEAVE operation The HOME LEAVE lamp lights up B M fre onorr C Press the button again to cancel HOME LEAVE operation POWERFUL button Starts POWERFUL operation HOME LEAVE OONOFF LM c CH TL lt ARC433B70 gt Display LCD Displays the current settings In this illustration each section is shown with all its displays on for the purpose of explanation TEMPERATURE adjustment buttons Changes the temperature setting 1 AUTO 18 30 C DRY Not available COOL 18 32 C HEAT 10 30 C FAN Not available ON OFF button Press this button once to start operation Press once again to stop it R19546 Reference Refer to the following pages for detail HOME LEAVE operation P 24 2 POWERFUL operation P 27 Note manuals from DISTRIBUTOR S PAGE DISTRIBUTOR S PAGE Product Information Operation Installation Manual URL http global daikin com Daikin global Distributors_admin user_mng login php Refer to the operation manual of applicable model for detail You can download operation 45 Remote Controller SiBE041029EB Remote Controller Open the Front Cover MODE button
37. of frequency is canceled 50 60 class 71 class A C 110 120 B C 103 111 C C 101 5 109 D C 100 107 x E C 95 107 The same value continues 35 Function and Control SiBE041029EB Control Specification 3 5 Input Current Control Outline The microcomputer calculates the input current while the compressor is running and sets the frequency upper limit based on the input current In case of heat pump models this control is the upper limit control of frequency and takes priority over the lower limit control of four way valve operation compensation Detail Compressor Stop Stop Zone A Dropping Zone B Keep Zone PI E Input current 2 R14643 Frequency control in each zone Stop zone After 2 5 seconds in this zone the compressor is stopped Dropping zone The upper limit of the compressor frequency is defined as operation frequency 2 Hz After this the output frequency is lowered by 2 Hz every second until it reaches the keep zone Keep zone The present maximum frequency goes on Reset zone Limit of the frequency is canceled RX50G2V1B RX60G2V1B Cooling Heating Cooling Heating A A 20 0 20 0 B A 10 0 15 0 12 0 16 0 C A 9 0 14 0 11 0 15 0 RX50G3V1B RX60G3V1B 71 class Cooling Heating Cooling Heating Cooling Heating A A 20 0 20 0 20 0 B A 13 0 15 0 13 0 16 0 17 0 18 75 C A
38. operation e normal open contact option Priority room setting compatible adaptor option COOL HEAT mode lock Wireless HOME LEAVE operation e Controller Wired option ECONO operation Indoor unit ON OFF button e Signal receiving sign e R C with back light Temperature display Note Available Not available List of Functions Functions SiBE041029EB en m Category Functions 5 9 Son Category Functions 5 9 SSS 25000 25000 X10 rrr Basic Function Inverter with inverter power control e Health amp Clean Air purifying filter Operation limit for cooling 46 Photocatalytic deodorizing filter Operation limit for heating CWB E decoris photocatalytic PAM control Titanium apatite photocatalytic Compressor Oval scroll compressor air purifying filter Swing compressor Air filter prefilter Rotary compressor Wipe clean flat panel Reluctance DC motor e Washable grille Comfortable Power airflow flap MOLD PROOF operation Airflow Power airflow dual flaps Heating dry operation Power airflow diffuser Good sleep co
39. repair or inspecting the circuits do not touch any electrically charged sections of the equipment If the refrigerant gas is discharged during the repair work do not touch the discharged refrigerant gas The refrigerant gas may cause frostbite When disconnecting the suction or discharge pipe of the compressor at the welded section evacuate the refrigerant gas completely at a well ventilated place first If there is gas remaining inside the compressor the refrigerant gas or refrigerating machine oil discharges when the pipe is disconnected and it may cause injury If the refrigerant gas leaks during the repair work ventilate the area The refrigerant gas may generate toxic gases when it contacts flames Be sure to discharge the capacitor completely before conducting repair work The step up capacitor supplies high voltage electricity to the electrical components of the outdoor unit A charged capacitor may cause an electrical shock e o SiBE041029EB Safety Cautions Warning Do not start or stop the air conditioner operation by plugging or unplugging the power cable plug Plugging or unplugging the power cable plug to operate the equipment may cause an electrical shock or fire Be sure to wear a safety helmet gloves and a safety belt when working at a high place more than 2 m Insufficient safety measures may cause a fall accident In case of R 32
40. the outdoor unit PCB NO Pulse signal generated gt Replace the outdoor fan motor YES gt Replace the outdoor unit PCB R15675 73 Service Diagnosis SiBE041029EB Troubleshooting 4 15 Input Overcurrent Detection Error Code Method of Error Detection Error Decision Conditions Supposed Causes Troubleshooting Check No 15 Refer to P 96 Check No 17 Refer to P 98 Check No 18 Refer to P 98 An input overcurrent is detected by checking the input current value with the compressor running The current exceeds about 20 A for 2 5 seconds with the compressor running The upper limit of the current decreases when the outdoor temperature exceeds a certain level Outdoor temperature is out of operation range Defective compressor Defective power module Defective outdoor unit PCB Short circuit N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged An input overcurrent may result from wrong internal wiring If the system is interrupted by an input overcurrent after the wires have been disconnected and reconnected for part replacement check the wiring again Check No 17 Check the installation condition Y Start operation and measure the input current Input current flowing NO above its stop level Replace the outdoor unit PCB YES Y Turn off the powe
41. x 35 3 Specifications Specifications SiBE041029EB 50 Hz 220 230 240 V Indoor Unit FTX50GV1B FTX60GV1B Model Outdoor Unit RX50G3V1B RX60G3V1B Cooling Heating Cooling Heating kW 5 0 1 7 6 0 5 8 1 7 7 7 6 0 1 7 6 7 7 0 1 7 8 0 pac Btuh 17 100 5 800 20 500 19 800 5 800 26 300 20 500 5 800 22 900 23 900 5 800 27 300 kcal h 4 300 1 460 5 160 4 990 1 460 6 620 5 160 1 460 5 760 6 020 1 460 6 880 Running Current Rated A 7 2 6 9 6 6 7 4 7 1 6 8 9 2 8 8 8 4 9 4 9 0 8 6 IMEEM Rated w 1 550 440 2 080 1 600 400 2 530 1 990 440 2 400 2 040 400 2 810 Power Factor 97 9 97 7 97 9 98 3 98 0 98 0 98 3 98 3 98 7 98 6 98 6 98 8 vin ied 3 23 3 86 2 88 3 63 4 25 3 04 3 02 3 86 2 79 3 43 4 25 2 85 Liquid mm 6 4 6 4 Gas mm 9127 9127 9 18 0 9 18 0 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Max Interunit Piping Length m 30 30 Max Interunit Height Difference m 20 20 Chargeless m 10 10 PER ot Additional Charge of gm 20 20 In
42. 2C Z3C 240 FERRITE CORE on RIT RT THERMISTOR PROTECTIVE EARTH OIL OTERO SAI SURGE ABSORBER 1 EARTH Appendix 114 Wiring Diagrams SiBE041029EB RX71GV1B RX71GV1B9 RX71GV1B8 3 EA TINTA p J L1R GRN TIC GRN if aw i 1 XIM d POWER SUPPLY L SA2 1 2 MRM20 QHR y FU1 100 ES 2 AC1 30A v2 MBM10 N N BRN fo 3 tt ei oe Iw H I a 2 2 E wir m i LI 1 TO INDOOR UNIT I zz p e2 uu 5 1 h FU ES 2 4e 3 le TID v3 kd PCB1 v5 ac 3 5101 S80 151015 4 580 1 NDOOR 599591 099 05 1 FIELD WIRING 1 1 1 vin d ROT RH OUTDOOR DISCHARGE CONDENSER OUTDOOR 21 27 EEBRITEQ RE Lt J TERMINAL STRIP MRM10 20 L LE COMPRESSOR MOTOR YIE ELECTRONIC EXPA
43. 4 C or more 2 5 Y 0 5 C zone Room thermistor continues for 10 min 23 59C temperature at start up X 0 59C E O or i X 2 0 C Y 0 5 C zone B 18 C continues for 10 min 222 _ 17 5 C 0 5 17 5 C 18 X 2 0 Y 0 5 C zone B continues for 10 min Zone C Thermostat ON 0 5 C Zone A Thermostat OFF R11581 21 Function and Control SiBE041029EB Main Functions 1 6 Automatic Operation Outline Automatic Cooling Heating Function When the automatic operation is selected with the remote controller the microcomputer automatically determines the operation mode as cooling or heating according to the room temperature and the set temperature at start up The unit automatically switches the operation mode to maintain the room temperature at the set temperature Detail Ts set temperature set by remote controller Tt target temperature determined by microcomputer Tr room thermistor temperature detected by room temperature thermistor C correction value 1 The set temperature Ts determines the target temperature Tt Ts 18 30 C 2 The target temperature Tt is calculated as Tt Ts C where C is the correction value C 0 C 3 Thermostat ON OFF point and operation mode switching point are as follows Tr means the room thermistor temperature 1 Heating Cooling switching point Tr gt Tt 2 5 C 2 Cooling gt Heating switch
44. 4 Refer to P 95 N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Four way valve coil YES disconnected loose YES gt Correct the four way valve coil Harness disconnected Check the continuity of the four way valve coil and harness Y Disconnect the harness from the connector Resistance NO gt Reconnect the harness between harnesses about 1000 2000 2 Check No 13 NG gt Replace the four way valve coil Check the four way valve switching output gt Replace the outdoor unit PCB gt Reconnect the thermistor s gt Replace the defective thermistor s Any thermistor YES disconnected NO Check No 01 NG Check the thermistors OK Check No 14 NG Refrigerant shortage Water mixed OK Stop valve gt Refer to the refrigerant line check procedure gt Replace the four way valve defective dust clogged R19543 Service Diagnosis 76 Troubleshooting SiBE041029EB 4 17 Discharge Pipe Temperature Control Error Code Method of Error Detection Error Decision Conditions Supposed Causes Troubleshooting Check No 01 Refer to P 93 Check No 12 Refer to P 94 Check No 14 Refer to P 95 An error is determined with the temperature detecte
45. 45 60 Power Factor 97 4 97 8 98 7 97 4 96 6 96 2 Temperature Control Microcomputer Control Dimensions H x W x D mm 290 x 1 050 x 238 Packaged Dimensions H x W x D mm 337 x 1 147 x 366 Weight Mass kg 12 Gross Weight Gross Mass kg 17 Sound ded H M L SL dB A 46 42 37 34 46 42 37 34 Sound Power Level dB 62 62 Outdoor Unit RX71GV1B Casing Color Ivory White Type Hermetically Sealed Swing Type Compressor Model 2YC63BXD Motor Output 1 920 Refrigerant FVC50K Oil Charge L 0 75 R 410A Refrigerant Charge kg 2 30 HH 57 1 2 016 Airflow Rate m min 54 5 1 924 46 0 1 624 cfm SL 46 0 1 624 46 0 1 624 Fan Type Propeller Motor Output 66 Running Current Rated A 10 59 10 20 9 71 11 42 10 93 10 44 Power Consumption Rated 2 305 2 305 2 305 2 490 2 490 2 490 Power Factor 98 9 98 3 98 9 99 1 99 0 99 4 Starting Current A 11 7 Dimensions H x W x D mm 770 x 900 x 320 Packaged Dimensions H x W x D mm 900 x 925 x 390 Weight Mass kg 71 Gross Weight Gross Mass kg 79 Sound Pressure H SL dB A 52 49 52 49 Level gounid Rower i dB 66 66 Drawing No 3D066641 Note The data are based on the conditions shown in the table below Conversion Formulae Cooling Heating Piping Length kcal h kW x 860 Indoor 27 CDB 19 CWB Indoor 20 CDB 5m Btu h kW x 3412 Outdoor 35 CDB 24 CWB Outdoor 7 CDB 6 CWB cfm m3 min
46. 46 42 37 34 46 42 37 34 Sound Power Level dB 63 62 Outdoor Unit RX71GV1B9 RX71GV1B8 Casing Color Ivory White Type Hermetically Sealed Swing Type Compressor Model 2YC63BXD Motor Output 1 920 Refrigerant FVCS0K Oil Charge L 0 75 R 410A Refrigerant Charge kg 2 30 H m min 54 5 1 924 46 0 1 624 ATO Rate cfm 46 0 46 0 SR Fan Type Propeller Motor Output 66 Running Current Rated A 10 59 10 20 9 71 11 42 10 93 10 44 Power Consumption Rated 2 305 2 305 2 305 2 490 2 490 2 490 Power Factor 98 9 98 3 98 9 99 1 99 0 99 4 Starting Current A 11 7 Dimensions H x W x D mm 770 x 900 x 320 Packaged Dimensions H x W x D mm 900 x 925 x 390 Weight Mass kg 71 Gross Weight Gross Mass kg 79 Sound Pressure H SL dB A 52 49 52 49 Level ower dB 65 65 Drawing 3D080177 Note m The data are based on the conditions shown in the table below Conversion Formulae Cooling Heating Piping Length kcal h kW x 860 Indoor 27 CDB 19 CWB Indoor 20 CDB 5m Btu h kW x 3412 Outdoor 35 CDB 24 CWB Outdoor 7 CDB 6 CWB x 35 3 Specifications SiBE041029EB Part 3 Printed Circuit Board Connector Wiring Diagram stots ic Romeo AR cunt intend Fata ORO ST reste 10 racc e ce eov en Anne e rn da 12
47. 9 DC motor Check the outdoor fan system Fan motor lead wire connector disconnected NO Outdoor fan running Go to Check No 16 Outdoor fan system is functioning Reconnect the connector R19395 5 12 Main Circuit Short Check Check No 20 RX50 60G3V1B only Check to make sure that the voltage between and of the diode bridge DB1 is approximately O V before checking W Measure the resistance between the pins of the DB1 referring to the table below If the resistance is or less than 1 kW short circuit occurs on the main circuit Negative terminal of multimeter positive terminal for digital 2 3 4 2 3 1 multimeter Positive terminal of multimeter negative terminal for digital 4 3 1 2 3 multimeter several several Resistance is OK several MQ E several Resistance is NG 0 Q or eo 0 0 00 or eo 8071 275854 71 NN Multimeter R19560 99 Service Diagnosis SiBE041029EB Check 5 13 Capacitor Voltage Check Check No 21 RX50 60G2V1B 71 class only Before this check be sure to check the main circuit for short circuit With the circuit breaker still on measure the voltage accord
48. B 85 56 71 class 105 97 Supposed Causes Short circuit PCB Defective outdoor fan motor Defective radiation fin thermistor Disconnection of connector Defective outdoor unit PCB Silicon grease is not applied properly on the radiation fin after replacing the outdoor unit 89 Service Diagnosis SiBE041029EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Check No 17 T urn off the power and turn it on Refer to P 98 again to start the system Check No 19 Error displayed again Refer to P 99 Ee Check No 19 Check the outdoor fan Radiation fin dirty Has the PCB been YES replaced Check if silicon grease is applied properly on the radiation fin If not apply the silicon grease Check the radiation fin temperature Above A C Replace the outdoor unit PCB NG gt Replace the outdoor fan motor Correct the connectors and fan motor leads Replace the outdoor unit PCB N Check the installation condition Go to Check No 17 Clean up the radiation fin R19529 A C RX50 60G2V1B 105 RX50 60G3V1B 85 71 class 105 m Note Refer to Silicon Grease on Power Transistor Diode Bridge page 109 for detail Service Diagnosis 90 Troublesho
49. Disconnect the harnesses U V and W Y Check No 15 Inverter analyzer Check with the inverter analyzer RSUKO0917C NO gt Replace the compressor YES Correct the power supply or replace the outdoor unit PCB R19184 83 Service Diagnosis SiBE041029EB Troubleshooting 4 21 CT or Related Abnormality RX50 60G2V1B 71 Class Only 0 54 Method of Error A CT or related error is detected by checking the compressor running frequency and CT Detection detected input current Error Decision The compressor running frequency is more than A Hz and the CT input current is less than Conditions BA A Hz B A RX50 60G2V1B 55 0 5 71 class 32 0 5 Ifthe error repeats the system is shut down W Reset condition Continuous run for about 60 minutes without any other error Supposed Defective power module Causes Broken or disconnected wiring Defective reactor Defective outdoor unit PCB Service Diagnosis 84 Troubleshooting SiBE041029EB Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Check No 15 Refer to P 96 Check No 21 Refer to P 100 Turn off the power and turn it on again Y Start operation Running current as shown at right with relay cable 1 or 2 YES gt
50. ING button the flap moves up and down or and the louver moves right and left The flap louver stops when you press the SWING button again TIMER CANCEL button Cancels the timer setting RESET button Restarts the unit if it freezes Use a thin object to push CLOCK button R19648 Reference Refer to the following pages for detail 3 INTELLIGENT EYE operation P 26 5 Clock setting P 27 4 Auto swing setting P 19 il Note Refer to the operation manual of applicable model for detail You can download operation manuals from DISTRIBUTOR S PAGE DISTRIBUTOR S PAGE Product Information Operation Installation Manual URL http global daikin com Daikin global Distributors admin user mng login php Remote Controller 46 SiBE041029EB Part 6 Service Diagnosis 1 Troubleshooting with LED doceo esae ema Ond idet didum 49 Indoor Uitte e eee ieee 49 T 2 Outdoor besos eter Coa uta Ae diee aer seeded 49 2 Problem Symptoms and 50 3 Service CHECK EUICDOD dicte iore Dons ro Se 51 A eTEOUDIGSPIGOTETO hr rte bag a t enean ee e 54 4 1 Error Codes and 54 42 Indoor Unit PCB Abnormality edt e aceite tenis 55 4 3 Freeze up Protection Control Heating Peak cut Contro
51. J8 Jumpers are necessary for electronic circuit Improper operation may occur if you cut any of them Printed Circuit Board Connector Wiring Diagram SiBE041029EB Part 4 Function and Control do M M itane d s i des aeu v ia dne D Ud 17 1 1 Temperature Control ir rn tenerte ten rna pee Re Peer pu ae 17 1 2 Frequency Principle iu ue etae ier eaa 17 1 3 Airflow Direction diee pest dicemus tees 19 1 4 Fan Speed Control for Indoor 20 1 5 Program Dry Operation saei back nate nef reote ete cte 21 1 6 Automatic Operation a ee t ee E andi ER dns 22 1 7 Ehermostat Cont Fols eee 23 128 24 19 24 1 10 INTELLIGENT EYE Operators ee oput tet ned 26 1 11 Inverter POWERFUL 27 112 Clock Setting 27 Teal Ss Ote EUPICLIOFIS e 2 28 lt 0 IT 29 3 30 3 1 Mode Hierarchy iere be e E
52. NSION VALVE COIL MRC W MAGNETIC RELAY N NEUTRAL MIF FAN MOTOR V2 V3 V5 V9 V100 VARISTOR RIT R3T THERMISTOR FORCED OPERATION ON OFF SW SW REACTOR SA2 SURGE ARRESTER 92 5102 CONNECTOR 904 LOCALSETTING SW4 QIL OVERLOAD PROTECTOR FU2 FU3 FUSE LEDA PILOT LAMP POWER MODULE AC2 PCB1 2 CIRCUIT BOARD U V W X12A YIR REVERSING SOLENOID VALVE COIL E1 E2 SHEET METAL TERMINAL STRIP FIXED PLATE HR1 HR2 CONNECTOR 30933991M 115 Appendix Revision History Month Year Version Revised contents 03 2010 SiBE041029 First edition 12 2012 SiBE041029_A Model addition RX50 60G3V1B RX71GV1B9 12 2013 SiBE041029EB Model addition RX71GV1B8 Warming Daikin products are manufactured for export to numerous countries throughout the world Prior to purchase please confirm with your local authorised importer distributor and or retailer whether this product conforms to the applicable standards and is suitable for use in the region where the product will be used This statement does not purport to exclude restrict or modify the application of any local legislation e Ask a qualified installer or contractor to install this product Do not try to install the product yourself Improper installation can result in water or refrigerant leakage electrical shock fire or explosion Use only those parts and accessories supplied or specifie
53. No 19 Refer to P 99 Error again or outdoor YES Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged WARNING To cool the electrical components the outdoor fan starts when the radiation fin temperature rises above C C and stops when it drops below B C fan activated NO temperature Check the radiation fin Above A C Check No 19 NG Replace the outdoor unit PCB Check the outdoor fan NO gt Replace the outdoor fan motor Correct the connectors and fan motor lead wire Replace the outdoor unit PCB gt Check the installation Radiation fin dirty condition Go to Check No 17 R19556 gt Clean up the radiation fin Service Diagnosis 88 Troubleshooting SiBE041029EB 4 24 Radiation Fin Temperature Rise Error Code L Method of Error A radiation fin temperature rise is detected by checking the radiation fin thermistor with the Detection compressor on Error Decision If the error repeats the system is shut down If the radiation fin temperature with the compressor on is above Conditions The error is cleared when the radiation fin temperature drops below B C Reset condition Continuous run for about 60 minutes without any other error C B C RX50 60G2V1B 105 99 RX50 60G3V1
54. SCHARGE PIPE THERMISTOR dose GAS STOP VALVE COMPRESSOR WITH SERVICE PORT 3D051637Y 111 Appendix SiBE041029EB Piping Diagrams RX50 60G3V1B OUTDOOR UNIT 97 9 HEAT EXCHANGER OUTDOOR TEMPERATURE TG GUT THERMISTOR 7 9 7 9 127 7 9 CAPILLARY TUBE 1 1 79 7 9 4 0 CuT 7 9 FILTER REFRIGERANT FLOW APILLARY TUBE 2 6 4 T9 CT CAPILLARY TUBE 3 290006 40CuT B HEATING EXCHANGER 4 0 5 1 5 THERMISTOR CAPILLARY TUBE 4 8 oe ELECTRONIC PROPELLER EXPANSION VALVE 12 7 CuT FILTER H i E 12 7 2 s 2 5 FouURWAY 9 RECEIVER 7 9 VALVE n ON HEATING 1 MUFFLER MUFFLER FIELD PIPING 79CuT 5 i 6 4 CuT an 6 4 CuT 5 1 2 STOP VANE v Ux 127 FIELD PIPING DISCHARGE PIPE 127 CuT i THERMISTOR GAS STOP VALVE COMPRESSOR WITH SERVICE PORT 3D080605B RX71GV1B RX71GV1B9 RX71GV1B8 OUTDOOR UNIT HEAT EXCHANGER
55. Specifications SiBE041029EB Specifications 50 Hz 220 230 240 V Indoor Unit FTX71GV1B Model 3 RX71GV1B Outdoor Unit Cooling Heating kW 7 1 2 3 8 5 8 2 2 3 10 2 Es Btu h 24 200 7 800 29 000 28 000 7 800 34 800 kcal h 6 110 1 980 7 310 7 050 1 980 8 770 Running Current Rated A 10 8 10 4 9 9 11 7 11 2 10 7 i ption Rated w 2 350 570 3 200 2 550 520 3 820 Power Factor 98 9 98 2 98 9 99 1 99 0 99 3 vin DIU ww 3 02 4 04 2 66 3 22 4 42 2 67 Bini Liquid mm 6 4 Connections Gas mm 9 15 9 Drain mm 18 0 Heat Insulation Both Liquid and Gas Pipes Max Interunit Piping Length m 30 Max Interunit Height Difference m 20 Chargeless m 10 rud ot Additional Charge of gm 20 Indoor Unit FTX71GV1B Front Panel Color White H 17 4 614 19 7 696 M m min 14 6 516 16 9 597 Airflow Rate L cfm 11 6 410 14 3 505 SL 10 6 374 12 7 448 Type Cross Flow Fan Fan Motor Output Ww 43 Speed Steps 5 Steps Quiet Auto Air Direction Control Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 21 0 20 0 19 0 28 0 27 0 26 Power Consumption Rated
56. T 47 1 TO INDOOR UNIT i x H T I i M 1 ZAC fi 5e AW 2 _ Ab Bin A wo in 3 3 o e OO BLU PP wil oS v3 1 1 zu 1 1 pent 540155 SHEET v5 1 4 h METAL eNe PINE MC 551 S101 580 520 590 6 INDOOR 12229 24454 1 1 ssi sess 1 1 t 1 1 f TCI zzg3 8 FIELD WIRING manana Bas 5 aa S552 B 1 550 sd pees p YAR E R3T R2T RIT HP LED A 5219590 OUTDOOR DISCHARGE 9 CONDENSER 1 Swi 5 4 OUTDOOR E eee 1 FERRITE CORE XIM TERMINAL STRIP MRM10 MRM20 L LVE M1C COMPRESSOR MOTOR ELECTRONIC EXPANSION VALVE COIL MAGNETIC RELAY N MIF FAN MOTOR V2 V3 V5 V6 V11 VARISTOR R1T R3T THERMISTOR SWh1 FORCED OPERATION ON OFF SW SW1 LIR REACTOR SA2 SURGE ARRESTER 52 5102 CONNECTOR SW4 LOCAL SETTING SW SW4 OVERLOAD PROTECTOR fut FUSE LEDA PILOT LAMP PM1 EE SOARD i 1 2 j U V W X11A X12A YiR REVERSING SOLENOID VALVE COIL E1 E2 SHEET METAL TERMINAL STRIP FIXED PLATE 3D056095G HR1 HR2 CONNECTOR 113 Appendix SiBE041029EB Wiring Diagrams
57. Troubleshooting SiBE041029EB 45 Thermistor or Related Abnormality Indoor Unit Error Code Method of Error Detection Error Decision Conditions Supposed Causes Troubleshooting Check No 01 Refer to P 93 mo Log J The temperatures detected by the thermistors determine thermistor errors The thermistor input is more than 4 96 V or less than 0 04 V during compressor operation Disconnection of connector W Thermistor corresponding to the error code is defective W Defective indoor unit PCB N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Check the connection of connectors NO gt Correct the connection YES Check No 01 Check the thermistor resistance value NO gt Replace the thermistor YES gt Replace the indoor unit PCB R15717 Indoor heat exchanger thermistor 79 Room temperature thermistor 59 Service Diagnosis SiBE041029EB Troubleshooting 4 6 Refrigerant Shortage Error Code Method of Error Detection Error Decision Conditions Supposed Causes or Refrigerant shortage detection I Refrigerant shortage is detected by checking the input current value and the compressor running frequency If the refrigerant is short the input current is lower than the normal value Refrigerant shortage detection 11
58. WINING DIAQKAIMNS 113 Indoor nis is ertet eu ee eS 113 2 2 Outdoor eiecti tnn 113 Appendix 110 Piping Diagrams SiBE041029EB 1 Piping Diagrams 1 1 Indoor Unit FTX50 60GV1B FTX71GV1B INDOOR UNIT INDOOR UNIT 7 9CuT HEAT EXCHANGER THERMISTOR ON HEAT EXCH FIELD PIPING 640 FIELD PIPING FIELD PIPING 6 4CuT i d27cur FAN MOTOR L FIELD PIPING I REFRIGERANT FLOW 15 9 2 7 COOLING E MEATING mc E REFRIGERANT FLOW COOLING HEATING 4D040081Y 4D040082W 1 2 Outdoor Unit RX50 60G2V1B OUTDOOR UNIT 7 9CuT HEAT EXCHANGER OUTDOOR TEMPERATURE THERMISTOR c 7 9CuT 7 9CuT 12 7CuT 7 9CuT CAPILLARY TUBE 1 pec Mur 19007 40007 MUFFLER 79CUT 0 AVITH 7 9CuT FILTER REFRIGERANT FLOW CAPILLARY TUBE 2 6 4CuT 811 CRCHING HEATING HEAT i EXCHANGER THERMISTOR y J ELECTRONIC PROPELLER FAN X EXPANSION 2 VALVE 12 7CuT FILTER 12 7CuT N 9 5CuT nv 5 RECEIVER FouRWY 79CuT valve ON HEATING 1 MUFFLER MUFFLER FIELD PIPING Y 6 4CuT 7 9CuT 5 6 4CuT i 9 STOP VALVE MUFFLER p 127 T FIELD PIPING DI
59. again Keep on running YES gt Replace the outdoor unit PCB R11712 Service Diagnosis 80 Troubleshooting SiBE041029EB 4 20 Position Sensor Abnormality LN Error Code nu Method of Error A compressor start up failure is detected by checking the compressor running condition through Detection the position detection circuit Error Decision Ifthe error repeats the system is shut down Conditions W Reset condition Continuous run for about 5 minutes without any other error Supposed Disconnection of the compressor relay cable Causes Defective compressor Defective outdoor unit PCB Start up failure caused by the closed stop valve Input voltage is outside the specified range 81 Service Diagnosis SiBE041029EB Troubleshooting Troubleshooting RX50 60G2V1B 71 class N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Check No 15 Refer to P 96 Turn off the power 18 Check the power supply voltage Refer to P 98 NO gt Correct the power supply Voltage as rated Check No 18 Check the discharge pressure NO gt Replace the stop valve YES Check the connection Electrical components or NO gt Reconnect the electrical compressor harnesses connected as specified YES Turn on the power Check the ele
60. and minimum opening of the electronic expansion valve are limited 50 60 class 71 class Maximum opening pulse 480 450 Minimum opening pulse 54 75 The electronic expansion valve is fully closed when cooling operation stops and is opened at a fixed degree during defrosting 3 11 4 Starting Operation Control The electronic expansion valve opening is controlled when the operation starts thus preventing superheating or liquid compression 3 11 5 Control when the Frequency Changes When the target discharge pipe temperature control is active if the target frequency changes to a specified value in a certain time period the target discharge pipe temperature control is canceled and the target opening of the electronic expansion valve is changed according to the frequency shift 3 11 6 High Discharge Pipe Temperature Control When the compressor is operating if the discharge pipe temperature exceeds a certain value the electronic expansion valve opens and the refrigerant runs to the low pressure side This procedure lowers the discharge pipe temperature 41 Function and Control SiBE041029EB Control Specification 3 11 7 Discharge Pipe Thermistor Disconnection Control Outline Detail The disconnection of the discharge pipe thermistor is detected by comparing the discharge pipe temperature with the condensation temperature If the discharge pipe thermistor is disconnected the electronic expansion va
61. ate Replace the PCB if you accidentally cut a wrong jumper Jumpers are necessary for electronic circuit Improper operation may occur if you cut any of them 107 Trial Operation and Field Settings SiBE041029EB Field Settings 4 3 Jumper and Switch Settings Indoor Unit Outdoor Unit Caution Function Jumper When connected When cut factory setting Fan speed setting when JB Fan speed setting The fan stops compressor stops for Remote controller thermostat OFF effective only setting in cooling operation Power failure recovery function JC Auto restart The unit does not resume operation after recovering from a power failure Timer settings are cleared For the location of the jumper refer to page 10 Function Switch Jumper Switch OFF Switch ON Jumper connected Jumper cut factory setting Improvement RX50 60G2V1B 71 class SW4 C Standard control Reinforced control Ex of defrost RX50 60G3V1B gt 48 Thefrequency increases performance the duration time of defrost lengthens For the location of the switch jumper refer to page 13 15 Replace the PCB if you accidentally cut a wrong jumper Jumpers are necessary for electronic circuit Improper operation may occur if you cut any of them Trial Operation and Field Settings 108 Silicon Grease on Power Transistor Diode Bridge SiBE041029EB 5 Silicon Grease on
62. aters stoves and ranges 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 does not have sufficient strength and if the installation work is not conducted securely the equipment may fall and cause injury Check to make sure that the power cable plug is not dirty or loose then insert the plug into a power outlet securely If the plug has dust or loose connection it may cause an electrical shock or fire Be sure to install the product correctly by using the provided standard installation frame Incorrect use of the installation frame and improper installation may cause the equipment to fall resulting in injury Be sure to install the product securely in the installation frame mounted on the window frame If the unit is not securely mounted it may fall and cause injury For unitary type only When replacing the coin battery in the remote controller be sure to dispose of the old battery to prevent children from swallowing it If a child swallows the coin battery see a doctor immediately Caution Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site to prevent electrical shocks Do not install the equipment in a place where there is a possibility of combus
63. ave in 1 second in total it judges humans are in the room as the motion signal is ON W The sensor may detect human motion with up to 20 msec latency 2 The motions in cooling within within 20 min 20 min within 20 min 20 min gt detection ON OFF i We Reset Reset Reset Target temperature Lb i NENNEN Remote controller ON j INTELLIGENT OFF EYE button Operation ae Set speed Set speed Fan speed 19414 In FAN operation the fan speed is reduced by 60 rpm m When the microcomputer does not have a signal from the sensor in 20 minutes it judges that nobody is in the room and operates the unit at a temperature shifted from the target temperature cooling dry 1 2 C higher heating 2 C lower automatic according to the operation mode at that time For dry operation the temperature cannot be set with a remote controller but the target temperature is shifted internally Function and Control 26 Main Functions SiBE041029EB 1 11 Inverter POWERFUL Operation Outline In order to exploit the cooling and heating capacity to full extent the air conditioner can be operated by increasing the indoor fan rotating speed and the compressor frequency Detail When the POWERFUL button is pressed the fan speed and targe
64. bed power supply waveform Service Diagnosis 64 Troubleshooting SiBE041029EB Troubleshooting Check No 11 Refer to P 94 Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Check the power supply voltage Is the voltage fluctuation NO within 10 from the rated value Check the indoor unit outdoor unit connection wires YES gt Correct the power supply Is there any wiring error 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 gt Correct the indoor unit outdoor unit connection wires Properly insulated Check the LED A on the outdoor unit PCB Is LED A blinking Rotate the outdoor fan by hand NO Replace the connection wires between the indoor unit and outdoor unit Diagnose the outdoor unit PCB Does the outdoor fan rotate smoothly Check No 11 Check the power supply waveform NO Replace the outdoor fan motor and the outdoor unit PCB Is there any disturbance gt Replace the indoor unit PCB Locate the cause of the disturbance of the power supply waveform and correct it R19525 65 Service Diagnosis SiBE041029EB Troubleshooting 4 9 Signal Transmission Error on Ou
65. ce 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 procedure described in the following pages ONOFF Operation lamp green oo BJ R11686 Service Monitor The indoor unit has one green LED LED A on the control PCB When the microcomputer works in order the LED A blinks 1 2 Outdoor Unit The outdoor unit has one green LED LED A on the PCB When the microcomputer works in order the LED A blinks 49 Service Diagnosis SiBE041029EB Problem Symptoms and Measures 2 Problem Symptoms and Measures Symptom Check Item Measures Reference Page The unit does not operate Check the power supply Check if the rated voltage is supplied Check the type of the indoor unit Check if the indoor unit type is compatible with the outdoor unit Check the outdoor temperature Heating operation cannot be used when the outdoor temperature is 18 CWB or higher and EE cooling operation cannot be used when the outdoor temperature is below 10 CDB Diagnose with remote controller ER 54 indication Check the remote controller Check if address settings for the remote 106 addresses controller and indoor unit a
66. 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 Fan speed Room thermistor temperature target temperature M 2 C ML 1 5 C 41 C L 0 5 C R12390 lt Heating gt In heating operation the fan speed is regulated according to the indoor heat exchanger temperature and the difference between the room thermistor temperature and the target temperature nm Note 1 During POWERFUL operation the fan rotates at H tap 90 rpm 2 The fan stops during defrost control Function and Control 20 Main Functions SiBE041029EB 1 5 Program Dry Operation Program dry operation removes humidity while preventing the room temperature from lowering Since the microcomputer controls both the temperature and airflow rate the temperature adjustment and FAN setting buttons are inoperable Outline Detail The microcomputer automatically sets the temperature and airflow rate The difference between the room thermistor temperature at start up and the target temperature is divided into two zones Then the unit operates in an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Room thermistor Target temperature Thermostat OFF point Thermostat ON point temperature at start up X Y Z X 0 5 C m or 2
67. ctive electronic expansion valve Service Diagnosis 60 Troubleshooting SiBE041029EB Troubleshooting Check No 01 Refer to P 93 Check No 12 Refer to P 94 Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Any thermistor YES disconnected gt Replace the thermistor s in Discharge pipe thermistor position Indoor or outdoor heat exchanger thermistor Room temperature thermistor Outdoor temperature thermistor YES Stop valve closed gt Open the stop valve NO Check for refrigerant shortage Oil oozing at relay YES pipe connections gt Repair the pipe flare or replace the union Oil oozing at internal YES piping Check the pipes for improper contact and correct them as required Replace the cracked pipe Compressor vibrating too much Check the power transistor harness for loosening Correct it as required Also replace the cracked pipe Check No 12 Electronic expansion valve functioning NO gt Replace the electronic expansion valve Change for a specified amount of fresh refrigerant NO Refrigerant shortage error gt Completed again Check No 01 NG Check the thermistors gt Replace the defective thermistor s Replace the outdoor unit NO Error again gt Comple
68. ctrolytic capacitor voltage NO components or compressor harnesses as specified 320 x 50 VDC y YES Turn off the power Disconnect the harnesses U V and W Y Check No 15 Inverter analyzer Check with the inverter analyzer RSUK0917C NO gt Replace the outdoor unit PCB YES gt Replace the compressor gt Correct the power supply or replace the outdoor unit PCB R19185 Service Diagnosis 82 Troubleshooting SiBE041029EB Troubleshooting RX50 60G3V1B N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Check No 15 Refer to P 96 Turn off the power i Check No 18 Check the power supply voltage Refer to P 98 Y Volt ted Check No 20 o tage as rated Correct the power supply Refer to P 99 Check No 18 Check the discharge pressure NO gt Replace the stop valve YES Check No 20 Check the short circuit of the diode bridge NO Replace the outdoor unit PCB YES Check the connection Electrical components or NO compressor harnesses Reconnect the electrical connected as components or compressor specified harnesses as specified YES Turn on the power Check the electrolytic capacitor voltage NO 320 x 50 VDC gt Replace the outdoor unit PCB y YES Turn off the power
69. d Match the compatible models Correct the power supply Replace the indoor unit PCB Completed Correct the power supply Replace the indoor unit PCB Completed Completed R15310 Model Type Connector Wall mounted type Terminal board Control PCB H1 H2 H3 55 Service Diagnosis SiBE041029EB Troubleshooting 4 3 Freeze up Protection Control Heating Peak cut Control Error Code hn Method of Error Freeze up protection control Detection During cooling operation the freeze up protection control operation halt is activated according to the temperature detected by the indoor heat exchanger thermistor Heating peak cut control During 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 Error Decision Freeze up protection control Conditions During cooling operation the indoor heat exchanger temperature is below 0 C W Heating peak cut control During heating operation the indoor heat exchanger temperature is above 65 C Supposed Short circuited air Causes m Clogged air filter of the indoor unit m Dust accumulation on the indoor heat exchanger W Defective indoor heat exchanger thermistor m Defective indoor unit PCB Troubleshooting N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or part
70. d by Ask a qualified installer or contractor to install those parts and accessories Use of unauthorised parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion e Read the User s Manual carefully before using this product The User s Manual provides important safety instructions and warnings Be sure to follow these instructions and warnings If you have any enquiries please contact your local importer distributor and or retailer Cautions on product corrosion 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 the sea shore direct exposure to the sea breeze should be avoided If you need to install the outdoor unit close to the sea shore contact your local distributor Dealer DAIKIN INDUSTRIES LTD Head Office Umeda Center Bldg 2 4 12 Nakazaki Nishi Kita ku Osaka 530 8323 Japan Tokyo Office JR Shinagawa East Bldg 2 18 1 Konan Minato ku Tokyo 108 0075 Japan http Awww daikin com rights reserved eSpecifications designs and other content appearing in this brochure are current as of December 2013 but subject to change without notice SiBE041029EB 12 2013 AK B
71. d by the discharge pipe thermistor m f the temperature detected by the discharge pipe thermistor rises above A C the compressor stops W The error is cleared when the discharge pipe temperature has dropped below B C A C B C 50 60 class 110 95 71 class 120 107 Ifthe error repeats the system is shut down W Reset condition Continuous run for about 60 minutes without any other error Defective discharge pipe thermistor Defective outdoor heat exchanger thermistor or outdoor temperature thermistor Defective electronic expansion valve or coil Refrigerant shortage Defective four way valve Water mixed in refrigerant Defective stop valve Defective outdoor unit PCB N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged crock No o1 gt Replace the defective OPEM Discharge pipe thermistor ihermistor s Outdoor heat exchanger thermistor i OK Outdoor temperature thermistor Check No 12 NG Check the electronic Replace the electronic expansion valve expansion valve or the coil y OK Check No 14 NG Check the refrigerant gt Refer to the refrigerant line line Refrigerant shortage check procedure Four way valve OK Water mixed Stop valve Replace the outdoor unit PCB R15825 77 Service Diagnosis SiBE041029EB Troubleshooting 4 18 High Pressure Control i
72. ded gt Ground the system The cause can be external factors other than malfunction Investigate the cause of noise R19526 Service Diagnosis 68 Troubleshooting SiBE041029EB Troubleshooting RX50 60G3V1B Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Turn on the power again NO gt the outdoor unit Is LED A blinking PCB 2 Check if the outdoor unit is grounded NO Grounded gt Ground the system NO Is the harness broken gt Zero cross signal abnormality Replace the outdoor unit PCB 1 gt Replace the harness R19527 69 Service Diagnosis SiBE041029EB Troubleshooting 4 12 OL Activation Compressor Overload cc Error Code 2 Method of Error A compressor overload is detected through compressor OL Detection Error Decision f the error repeats the system is shut down Conditions W Reset condition Continuous run for about 60 minutes without any other error Supposed Disconnection of discharge pipe thermistor Causes W Defective discharge pipe thermistor Disconnection of connector S40 Disconnection of 2 terminals of OL Defective OL Q1L W Broken OL harness m Defective electronic expansion valve or coil Defective four way valve or coil W Defective outdo
73. der in a well ventilated place Using the welder in an enclosed room may cause oxygen deficiency 1 2 Warnings and Cautions Regarding Safety of Users Warning Do not store the equipment in a room with successive fire sources e g naked flame gas appliance electric heater Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools may cause an electrical shock excessive heat generation or fire If the power cable and lead wires have scratches or deteriorated be sure to replace them Damaged cable and wires may cause an electrical shock excessive heat generation or fire Do not use a joined power cable or extension cable or share the same power outlet with other electrical appliances since it may cause an electrical shock excessive heat generation or fire Be sure to use an exclusive power circuit for the equipment and follow the local technical standards related to the electrical equipment the internal wiring regulations and the instruction manual for installation when conducting electrical work Insufficient power circuit capacity and improper electrical work may cause an electrical shock or fire Be sure to use the specified cable for wiring between the indoor and outdoor units Make the connections securely and route the cable p
74. door Unit FTX50GV1B FTX60GV1B Front Panel Color White White H 14 7 519 16 1 568 16 2 572 17 4 614 M m min 12 4 438 13 9 491 13 6 480 15 1 533 Arion Rate 10 3 364 11 5 406 114 403 12 7 448 SL 9 5 335 10 2 360 10 2 360 11 4 403 Type Cross Flow Fan Cross Flow Fan Fan Motor Output Ww 43 43 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto 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 16 0 15 0 15 0 17 0 16 0 16 0 19 0 18 0 17 0 21 0 20 0 19 Power Consumption Rated 34 34 34 36 36 36 40 40 40 45 45 45 Power Factor 926 96 6 98 6 94 4 96 3 97 8 93 8 95 7 96 6 98 0 97 4 97 8 98 7 Temperature Control Microcomputer Control Microcomputer Control Dimensions H x W x D mm 290 x 1 050 x 238 290 x 1 050 x 238 Packaged Dimensions H x W x D mm 337 x 1 147 x 366 337 x 1 147 x 366 Weight Mass kg 12 12 Gross Weight Gross Mass kg 17 17 Pressure H M L SL dB A 43 39 34 31 42 138 33 30 45 41 36 33 44 40 35 32 eve Sound Power Level dB 59 58 60 59 Outdoor Unit RX50G3V1B RX60G3V1B Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Compressor Model 2YC36BXD 2YC36BXD Motor Output 1 100 1 100 Refrigerant FVC50K FVC50K Oil Charge L 0 65 0
75. e PR REI Ki 30 3 2 Frequency tonta v Pr rao oae a dei crates 31 3 3 Controls at Mode Changing 33 3 4 Discharge Pipe Temperature 35 3 5 Input Current iid exa ose o eed c A a 36 3 6 Freeze up Protection 37 3 7 Heating Peak cut Control 37 3 9 Outdoor Fan 38 3 9 Liquid Compression Protection 38 3 10 D trost CORTO ire Oh em iban tdi dn do MRNA 39 3 11 Electronic Expansion Valve 40 3 12 MITUPICHOTIS e Piu E 43 Function and Control 16 Main Functions SiBE041029EB 1 Main Functions 1 1 Temperature Control Definitions of Temperatures Temperature Control The definitions of temperatures are classified as following Room temperature temperature of lower part of the room Set temperature temperature set by remote controller Room thermistor temperature temperature detected by room temperature thermistor Target temperature temperature determined by microcomputer 5 9 Target temperature Room thermistor temperature Set temperature Room temperature R12321 The temperature of the room is detected by the room temperature thermist
76. e power on W error is judged if the discharge pipe temperature is lower than the heat exchanger temperature Disconnection of the connector for the thermistor Thermistor corresponding to the error code is defective Defective heat exchanger thermistor in the case of 3 error outdoor heat exchanger thermistor in cooling operation or indoor heat exchanger thermistor in heating operation m Defective outdoor unit PCB In case of 4 N Be sure to turn off the power switch before connecting or disconnecting Caution gt connectors or parts may be damaged Replace the outdoor unit PCB 2 Radiation fin thermistor Service Diagnosis 86 Troubleshooting SiBE041029EB Troubleshooting Check No 01 Refer to P 93 In case of 45 3 5 N Caution Turn on the power again connectors or parts may be damaged Error displayed again on remote controller Check No 01 Check the thermistor resistance value NO Be sure to turn off the power switch before connecting or disconnecting Reconnect the connectors or thermistors 43 error the discharge pipe temperature is lower than the heat exchanger temperature Cooling Outdoor heat exchanger temperature Heating Indoor heat exchanger temperature Check No 01 Check the indoor heat exchanger thermistor resistance value in the heating operation YES Indoor heat exchanger the
77. eck the power supply voltage Is the voltage fluctuation NO within 10 from the rated value Check the connection of the compressor harness YES Loose or gt Correct the power supply gt Reconnect the harness disconnected Does the outdoor fan rotate smoothly System restarted NO gt Replace the outdoor fan motor and the outdoor unit PCB Precaution before turning on the power again Turn on the power Make sure the power has been off for at least 30 seconds Repeat a few times Disturbance factors Noise Power supply distortion gt Replace the outdoor unit PCB gt Check for such factors for a long term R19544 63 Service Diagnosis SiBE041029EB Troubleshooting 4 8 Signal Transmission Error Between Indoor Unit and Outdoor Unit Error Code Lu Method of Error The data received from the outdoor unit in signal transmission is checked whether it is normal Detection Error Decision The data sent from the outdoor unit cannot be received normally or the content of the data is Conditions abnormal Supposed m Reduction of power supply voltage Causes Wiring error W Breaking of the connecting wires between the indoor and outdoor units wire No 3 W Defective outdoor unit PCB Short circuit inside the fan motor winding W Defective indoor unit PCB m Distur
78. ed abnormality 86 Signal transmission error on outdoor unit 66 RX50 60G2V1B 71 class only Displayed only when system down occurs Service Diagnosis 54 Troubleshooting SiBE041029EB 4 2 Error Code Method of Error Detection Error Decision Conditions Supposed Causes Troubleshooting nm Note Check the following connector Indoor Unit PCB Abnormality po 1 The system checks if the circuit works properly within the microcomputer of the indoor unit The system cannot set the internal settings Defective indoor unit PCB Wrong models interconnected Disconnection of connector Reduction of power supply voltage N Caution Check the combination of the indoor and outdoor unit YES Check the connection of connectors See Note OK NO Y Correct the connection Error repeats NO YES gt To secure the connection once disconnect the connector and then reconnect it Check the power supply voltage Voltage as rated YES Start operation YES Error repeats NO 5 Check the power supply voltage Voltage as rated YES Start operation 5 Error repeats NO gt Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damage
79. ei pp E 30 3 1 Mode Hierarchy erat or n ee ree eet e teh 30 3 2 Fredquency lt bc ee 31 3 3 Controls at Mode Changing 33 3 4 Discharge Pipe Temperature 35 35 Input Current 36 3 6 Freeze up Protection 37 3 7 Heating Peak cut CODITOL eae edente ede aha honte eid 37 3 8 Outdoor Fan CODntTol diac bU RUP NO E RV RM EE 38 3 9 Liquid Compression Protection 38 310 Defrost CONTI 39 3 11 Electronic Expansion Valve 40 3 12 Malfanctioris c eco ui rdi o Diete deae reet 43 Table of Contents ii SiBE041029EB Part 5 Remote 44 Remote 45 Part 6 Service 47 1 Troubleshooting with LED auasaucucusbsanee crs 49 Tel Indoor Urt rore ies ite en RUM 49 We Outdoor Eden te et 49 2 Problem Symptoms and
80. el dB 59 58 61 60 Outdoor Unit RX50G2V1B RX60G2V1B Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Compressor Model 2YC36BXD 2YC36BXD Motor Output Ww 1 100 1 100 Refrigerant FVC50K FVC50K Oil Charge L 0 65 0 65 Type R 410A R 410A Refrigerant Change kg 1 50 1 50 HH 50 9 1 797 54 2 1 914 Airflow Rate jc 48 9 1 727 45 0 1 589 50 9 1 797 46 3 1 635 SL 417 1 472 42 4 1 497 Fan Type Propeller Propeller Motor Output 53 53 Running Current Rated A 7 04 6 75 6 45 7 23 6 94 6 64 9 01 8 62 8 23 9 19 8 80 8 41 Power Consumption Rated 1 516 1 516 1 516 1 564 1 564 1 564 1 950 1 950 1 950 1 995 1 995 1 995 Power Factor 926 97 9 97 6 97 9 98 3 98 0 98 1 98 4 98 4 98 7 98 7 98 6 98 8 Starting Current A 7 4 9 4 Dimensions H x W x D mm 735 x 825 x 300 735 x 825 x 300 Packaged Dimensions H x W x D mm 797 x 960 x 390 797 x 960 x 390 Weight Mass kg 48 48 Gross Weight Gross Mass kg 53 53 Sound Pressure H SL dB A 47 44 48 45 49 46 49 46 Level pound Power 61 62 63 63 Drawing No 3D066639A 3D066640A Note W The data are based on the conditions shown in the table below Conversion Formulae Cooling Heating Piping Length kcal h KW x 860 Indoor 27 CDB 19 CWB Indoor 20 5m Btu h kW x 3412 Outdoor 35 CDB 24 CWB Outdoor 7 CDB 6 CWB cfm m3 min x 35 3 5
81. from the frequency previously calculated 2 control If the operating frequency does not change for more than a certain fixed time the frequency is adjusted according to the AD value When the AD value is low the frequency is lowered When the AD value is high the frequency is increased 3 Frequency management when other controls are functioning When frequency is dropping Frequency management is carried out only when the frequency drops For controlling lower limit Frequency management is carried out only when the frequency rises 4 Upper and lower limit of frequency by PI control The frequency upper and lower limits are set according to the command of the indoor unit When the indoor or outdoor unit quiet operation command comes from the indoor unit the upper limit frequency is lower than the usual setting Function and Control 32 Control Specification SiBE041029EB 3 3 Controls at Mode Changing Start up 3 3 1 Preheating Control Outline Detail The inverter operation in open phase starts with the conditions of the preheating command from the indoor unit the outdoor temperature and the discharge pipe temperature Outdoor temperature gt Control Outdoor temperature A C Control 1 Control condition Discharge pipe temperature lt OFF condition Discharge pipe temperature gt C C Radiation fin temperature gt 90 C Control Il
82. fthe inverter current exceeds 20 A the system shuts down the compressor 3 12 3 Refrigerant Shortage Detection I Detecting by power consumption If the power consumption is below the specified value and the frequency is higher than the specified frequency it is regarded as refrigerant shortage The power consumption is low comparing with that in the normal operation when refrigerant is insufficient and refrigerant shortage is detected by checking power consumption Refrigerant shortage zone 88 5 5 zo 40 55 Hz Frequency depending on the model R18282 ll Detecting by discharge pipe temperature If the discharge pipe temperature is higher than the target discharge pipe temperature and the electronic expansion valve is fully open for more than the specified time it is regarded as refrigerant shortage Target discharge pipe temperature Refrigerant shortage zone R1391 Refer to page 60 for detail 43 Function and Control SiBE041029EB Part 5 Remote Controller 1 Remote 45 Remote Controller 44 Remote Controller SiBE041029EB 1 Remote Controller Signal transmitter To use the remote controller aim the transmitter at the indoor unit If there is anything to block signals between the unit and the remote controller such as a curtain the unit will not operate The
83. gnal receiving sign R C with back light Temperature display Note Available Lower limit can be extended by turning switch or Not available cutting jumper facility use only Refer to page 107 for detail List of Functions SiBE041029EB Part 2 Specifications SpECIfCatlON ane aces 5 Specifications 4 Specifications SiBE041029EB 1 Specifications 50 Hz 220 230 240 V Indoor Unit FTX50GV1B FTX60GV1B Model Outdoor Unit RX50G2V1B RX60G2V1B Cooling Heating Cooling Heating kW 5 0 1 7 6 0 5 8 1 7 7 7 6 0 1 7 6 7 7 0 1 7 8 0 Btu h 17 100 5 800 20 500 19 800 5 800 26 300 20 500 5 800 22 900 23 900 5 800 27 300 kcal h 4 300 1 460 5 160 4 990 1 460 6 620 5 160 1 460 5 760 6 020 1 460 6 880 Running Current Rated A 7 2 6 9 6 6 7 4 7 1 6 8 9 2 8 8 8 4 9 4 9 0 8 6 Rated 1 550 440 2 080 1 600 400 2 530 1 990 440 2 400 2 040 400 2 810 Power Factor 90 97 9 97 7 97 9 98 3 98 0 98 0 98 3 98 3 98 7 98 6 98 6 98 8 vin WW 3 23 3 86 2 88 3 63 4 25 3 04
84. h wire Connector for compressor Fuse 30 A 250 V Fuse 3 15 A 250 V Varistor for 50 60 model for 71 model S80 330x220 e ie E QUE EXE c cx IG ra ue 27 P T u E 2 WHT HR1 HR2 a at f 5 i ML rar a cei 559 1 590 3 15A 2P169046 1 Printed Circuit Board Connector Wiring Diagram Outdoor Unit SiBE041029EB class 2 Service Monitor PCB 1 S52 S102 2 LEDA 3 SW1 4 SW4 B 5 SW4 C SES SU 4 Ns HR1 white HR2 blue tee S20 S40 S70 951 i 2P171491 7 Connector for main PCB LED for service monitor green Forced cooling operation ON OFF button Refer to page 104 for detail Switch for facility setting 71 class only Refer to page 107 for detail Switch for improvement of defrost performance Refer to page 108 for detail LED A S52 SERVICE MONITO 2 Eg ese i b 290 DI B W1 Jud SW4 B SW4 C S102 3P169059 1 SW4 A has no function Keep it OFF Printed Circuit Board Connector Wiring Diagram SiBE041029EB Outdoor Unit 2 2 RX50 60G3V1B PCB 1 Filter PCB 1 S11 S Et
85. hee cheep 99 5 13 Capacitor Voltage 100 Table of Contents SiBE041029EB 5 14 Power Module 100 Part 7 Trial Operation and Field Settings 102 BI pue 5 Pump Down ties 103 Forced Cooling Operation spies oen fte ee tete epe 104 PD 105 A 106 4 1 When 2 Units are installed 1 106 4 2 Facility Setting Cooling at Low Outdoor Temperature 107 4 3 Jumper and Switch 108 Silicon Grease on Power Transistor Diode Bridge 109 Part 8 110 Te Piping Dia Grams auis od eec i on a 111 Tat Indoor nit i ec ese 111 12 Outdoor Unit n an eet e pier tig 111 2 Wiring DiagraMS ae aec bere enh ON des 113 24 Indoor Units et c 113 2 2 Outdoor Unibet ttu NN t Ent 113 Table of Contents Safety Cautions SiBE041029EB 1 Safety Cautions Be sure to read the following safety cautions before conducting repair w
86. icons are used to attract the attention of the reader to specific information Icon Type of Description Information Warning A Warning is used when there is danger of personal injury Warning Caution A Caution is used when there is danger that the reader through incorrect manipulation may damage equipment loose data get Caution an unexpected result or has to restart part of a procedure Note A Note provides information that is not indispensable but may nevertheless be valuable to the reader such as tips and tricks Note Reference Reference guides the reader to other places in this binder or in this manual where he she will find additional information specific topic SiBE041029EB Part 1 List of Functions RN URCHONS 2 List of Functions SiBE041029EB Functions 1 Functions 55 Se Category Functions 5 Functions S9 Basic Function Inverter with inverter power control Health amp Clean Air purifying filter Operation limit for cooling E Photocatalytic deodorizing filter Operation limit for heating DE MINOR photocatalytic PAM control Titanium apatite photocatalytic air purifying Compressor Oval scroll compressor filter Swing co
87. in each operation mode p 2 25 5 8 8 o 2 8 o 5 D D o Status 5 5 8 S o 2 2 2 5 o 55 d 5 2 55 9 sc 5 55 _ 8 Sis 156 58 o o 9 Do oc o E c S o 6 5 s 5 2 9 5 oo 9 05 58 SE o 3 52 gt 2 o Os o 35 9 5 jus a Starting operation control Control when the frequency changes e Target discharge pipe temperature control e Discharge pipe thermistor disconnection control e e High discharge pipe temperature control e e e e Defrost control heating only e Pressure equalizing control e Opening limit control e e e e e e Available Not available Function and Control 40 Control Specification SiBE041029EB 3 11 1 Fully Closing with Power ON The electronic expansion valve is initialized when turning on the power The opening position is set and the pressure is equalized 3 11 2 Pressure Equalizing Control When the compressor is stopped the pressure equalizing control is activated The electronic expansion valve opens and the pressure is equalized 3 11 3 Opening Limit Control The maximum
88. ing heating and cooling Once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power The following functions regulate the minimum and maximum frequency Frequency Functions Low W Four way valve operation compensation Refer to page 34 High W Compressor protection function Refer to page 34 Discharge pipe temperature control Refer to page 35 W input current control Refer to page 36 W Freeze up protection control Refer to page 37 W Heating peak cut control Refer to page 37 Defrost control Refer to page 39 Refer to page 104 for detail Function and Control 18 Main Functions SiBE041029EB 1 3 Airflow Direction Control Power Airflow The large flap sends a large volume of air downward to the floor and provides an optimum Dual Flaps control in cooling dry and heating operation lt Cooling Dry gt During cooling or dry operation the flap retracts into the indoor unit Then cool air can be blown far and distributed all over the room lt Heating gt During heating operation the large flap directs airflow downward to spread the warm air to the entire room Wide Angle The louvers made of elastic synthetic resin provide a wide range of airflow that guarantees Louvers comfortable air distribution Auto Swing The following table explains the auto swing proce
89. ing point Tr lt Tt 2 5 C 8 Thermostat ON OFF point is the same as the ON OFF point of cooling or heating operation 4 During initial operation Tr gt Ts Cooling operation Tr Ts Heating operation Cooling Operation Target temperature 2 5 C SEED Target temperature 1 5 C Target temperature 2 0 C Thermostat OFF Thermostat OFF Target temperature 2 5 C Heating Operation R11893 Ex When the target temperature is 25 C Cooling 23 0 C Thermostat OFF 22 0 C Switch to heating Heating 26 5 Thermostat OFF 27 5 C Switch to cooling Function and Control 22 Main Functions SiBE041029EB 1 7 Thermostat Control Outline Thermostat control is based on the difference between the room thermistor temperature and the target temperature Detail Thermostat OFF Condition The temperature difference is in the zone A Thermostat ON Conditions The temperature difference 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 the temperature difference is in the zone B Cooling Dry 10 minutes Heating 10 seconds Cooling Dry ON Room thermistor temperature target temperature Cooling 0 5 Dry 0 5 C 1 5 C B Cooling 2 0 Dry 2 5 2 0 R12319 Heating
90. ing to the drawing of the model in question Be careful never to touch any live parts Multimeter DC voltage range 5 14 Power Module Check Check No 22 n Note R18183 Check to make sure that the voltage between and of the power module or the diode bridge is approximately O V before checking multimeter Negative terminal of multimeter positive terminal for digital Power module or Diode bridge UVW Power module or Diode bridge UVW multimeter Positive terminal of multimeter negative terminal for digital UVW Power module or Diode bridge UVW Power module or Diode bridge Resistance is OK several kQ several MQ Resistance is NG 0 Q Disconnect the compressor harness connector from the outdoor unit PCB To disengage the connector press the protrusion on the connector Follow the procedure below to measure resistance between the or terminal of the power module or the diode bridge and the U V or W terminal of the compressor with a multimeter Evaluate the measurement results referring to the following table Service Diagnosis 100 SiBE041029EB RX50 60G2V1B 71 class The illustration is for 71 class as representative Power module BLU YLW RED GO SN 77
91. l 56 4 4 Fan Motor DC Motor or Related 57 4 5 Thermistor or Related Abnormality Indoor 59 46 Refrigerant Shortage euer nete terae te t iei arie 60 4 7 Low voltage Detection or Over voltage 62 4 8 Signal Transmission Error Between Indoor Unit and Outdoor Unit 64 4 9 Signal Transmission Error on Outdoor Unit PCB RX50 60G2V1B 71 Class 66 4 10 Unspecified Voltage Between Indoor Unit and Outdoor Unit 67 4 11 Outdoor Unit PCB 68 4 12 OL Activation Compressor 70 4 13 Compressor Lock ie Tenesio d IIR e io end a deas 72 42 T4 DO Fan E 73 4 15 Input Overcurrent Detection 74 4 16 Four Way Valve 75 4 17 Discharge Pipe Temperature 77 4 18 High Pressure Control in Cooling 78 4 19 Compressor System Sensor Abnormality 79 4 20 Position Sensor Abnormality e eh tee 81 4 21 CT or Related Abnormality RX50 60G2V1B 71 Class Only 84 4 22 Thermistor or Related Abnormality Outdoor 86 4 23 Electrical Box Temperature
92. line This function is limited only for facilities the target of air conditioning is equipment such as computer Never use it in a residence or office the space where there is a human 71 Class You can expand the operation range to 15 C by turning on the switch SW4 B on the service monitor PCB If the outdoor temperature falls to 20 or lower the operation stops If the outdoor temperature rises the operation starts again N E gt Turn on the switch SW4 B 8 918285 RX50 60G3V1B You can expand the operation range to 15 C by cutting the jumper J6 on the outdoor unit PCB Note that the operation may stop if the outdoor temperature drops below 15 C If the outdoor temperature rises the operation starts again Caution 1 818276 If the outdoor unit is installed where the outdoor heat exchanger of the unit is exposed to direct wind provide a windbreak wall Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and off when using facility settings Do not place humidifiers or other items which might raise the humidity in rooms where facility settings are being used A humidifier might cause dew condensation from the indoor unit outlet vent Use the indoor unit at the highest level of airflow r
93. lve opens according to the outdoor temperature and the operation frequency operates for a specified time and then stops After 3 minutes the operation restarts and checks if the discharge pipe thermistor is disconnected If the discharge pipe thermistor is disconnected the system stops after operating for a specified time If the disconnection is detected repeatedly the system is shut down When the compressor runs for 60 minutes without any error the error counter is reset When the starting control cooling A seconds heating B seconds finishes the detection timer for disconnection of the discharge pipe thermistor C seconds starts When the timer is over the following adjustment is made 1 When the operation mode is cooling When the following condition is fulfilled the discharge pipe thermistor disconnection is ascertained Discharge pipe temperature 6 C outdoor heat exchanger temperature 2 When the operation mode is heating When the following condition is fulfilled the discharge pipe thermistor disconnection is ascertained Discharge pipe temperature 6 C indoor heat exchanger temperature A seconds 10 B seconds 30 C seconds 540 When the thermistor is disconnected When the disconnection is ascertained the compressor continues operation for 9 minutes and then stops If the compressor stops repeatedly the system is shut down 3 11 8 Target Discharge Pipe Temperature Control The
94. mpressor e Air filter prefilter Rotary compressor Wipe clean flat panel Reluctance DC motor e Washable grille Comfortable Power airflow flap MOLD PROOF operation Aiow Power airflow dual flaps Heating dry operation Power airflow diffuser mE Good sleep cooling operation x Wide angle louvers Timer WEEKLY TIMER operation Vertical auto swing up and down e 24 hour ON OFF TIMER Horizontal auto swing right and left e NIGHT SET mode e 3 D airflow Worry Free Auto restart after power failure COMFORT AIRFLOW operation irae amp Self diagnosis digital LED display Comfort Auto fan speed e Wiring error check function eam Indoor unit quiet operation Anti corrosion treatment of outdoor heat NIGHT QUIET mode automatic exchanger OUTDOOR UNIT QUIET operation manual Flexibility Multi split split type compatible indoor unit INTELLIGENT EYE operation Flexible power supply correspondence Quick warming function High ceiling application preheating operation Chargeless 10m Hot start function Either side drain right or left Automatic defrosting Power selection mE Operation Automatic operation Remote 5 room centralized controller option Control Program dry operation Remote control adaptor e Fan only e normal open pulse contact option edid New POWERFUL operation non inverter Remote control adaptor _ onvenlence Inverter POWERFUL
95. n Cooling Error Code Method of Error Detection Error Decision Conditions Supposed Causes Troubleshooting Check No 01 Refer to P 93 Check No 12 Refer to P 94 Check No 17 Refer to P 98 Check No 18 Refer to P 98 Check No 19 Refer to P 99 High pressure control operation halt frequency drop etc is activated in cooling operation if the temperature sensed by the outdoor heat exchanger thermistor exceeds the limit The temperature sensed by the outdoor heat exchanger thermistor rises above about 60 65 C depending on the model W The error is cleared when the temperature drops below about 50 C Dirty outdoor heat exchanger Defective outdoor fan motor Defective stop valve Defective outdoor unit PCB The installation space is not large enough Defective electronic expansion valve or coil Defective outdoor heat exchanger thermistor N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Check the installation space Check No 17 NG Check the installation condition Check No 19 NG gt Change the installation location or direction Clean the outdoor heat exchanger Check the outdoor fan OK Check No 18 NG gt Replace the outdoor fan motor Reconnect the connector or fan motor lead wires Check the discharge pressure Check No 12 Check the electronic NG
96. n mode Fan I Cooling includes drying Heating I Heating Defrosting Stop indoor unit OFF Preheating operation Discharging from capacitor Stop R19522 n Note Unless specified otherwise a dry operation command is regarded as cooling operation Function and Control 30 Control Specification SiBE041029EB 3 2 Frequency Control Outline Detail The compressor frequency is determined according to the difference between the room thermistor temperature and the target temperature When the shift of the frequency is less than zero AF lt 0 by PI control the target frequency is used as the command frequency Dropping function Input current control etc Upper limit frequency FMAX Limit frequency Upper limit function lt _ Compressor protection function Command frequency Skip control Target frequency Initial frequency Lower limit frequency Lower limit function PI control FMIN Four way valve operation compensation etc Defrost control R18023 Determine command frequency Command frequency is determined in the following order of priority 1 Limiting defrost control time 2 Forced cooling 3 Indoor frequency command 2 Determine upper limit frequency The minimum value is set as an upper limit frequency among the frequency upper limits of the following functi
97. nd of the indoor outdoor unit quiet operation 8 Fan ON OFF control when operation starts stops The outdoor fan is turned ON when the operation starts The outdoor fan is turned OFF when the operation stops 3 9 Liquid Compression Protection Function Outline Detail In order to increase the dependability of the compressor the compressor is stopped according to the outdoor temperature and temperature of the outdoor heat exchanger Operation stops depending on the outdoor temperature Compressor turns off under the conditions that the system is in cooling operation and outdoor temperature is below 12 C Function and Control 38 Control Specification SiBE041029EB 3 10 Defrost Control Outline Defrosting is carried out by the cooling cycle reverse cycle The defrosting time or outdoor heat exchanger temperature must be more than a certain value to finish defrosting Detail Conditions for Starting Defrost W The starting conditions are determined with the outdoor temperature and the outdoor heat exchanger temperature W The system is in heating operation The compressor operates for 6 minutes than A minutes of accumulated time have passed since the start of the operation or ending the previous defrosting Conditions for Canceling Defrost The judgment is made with the outdoor heat exchanger temperature B C D Hz PI control Frequency
98. ne The upper limit of frequency is kept Up zone The upper limit of frequency increases Reset zone The upper limit of frequency is canceled A B C C D C 65 56 55 53 51 37 Function and Control SiBE041029EB Control Specification 3 8 Outdoor Fan Control 1 Fan ON control to cool down the electrical box The outdoor fan is turned ON when the electrical box temperature is high while the compressor is OFF 2 Fan OFF control during defrosting The outdoor fan is turned OFF during defrosting 3 Fan OFF delay when stopped The outdoor fan is turned OFF 60 seconds after the compressor stops 4 Fan speed control for pressure difference upkeep The rotation speed of the outdoor fan is controlled for keeping the pressure difference during cooling operation with low outdoor temperature When the pressure difference is low the rotation speed of the outdoor fan is reduced When the pressure difference is high the rotation speed of the outdoor fan is controlled as well as normal operation 5 Fan speed control during forced cooling operation The outdoor fan is controlled as well as normal operation during forced cooling operation 6 Fan speed control during POWERFUL operation The rotation speed of the outdoor fan is increased during POWERFUL operation 7 Fan speed control during indoor outdoor unit quiet operation The rotation speed of the outdoor fan is reduced by the comma
99. nit PCB Check No 14 NG Check refrigerant Refrigerant shortage gt n the DTE line ine x Water mixed check procedure Stop valve ok Replace the outdoor unit PCB R19528 OL Q1L activating temperature 120 130 C depending on the model OL Q1L recovery temperature 95 C 71 Service Diagnosis SiBE041029EB Troubleshooting 4 13 Compressor Lock Error Code Method of Error Detection Error Decision Conditions Supposed Causes Troubleshooting Check No 15 Refer to P 96 A compressor lock is detected by checking the compressor running condition through the position detection circuit W Acompressor lock is detected by the current waveform generated when applying high frequency voltage to the motor Ifthe error repeats the system is shut down W Reset condition Continuous run for about 5 minutes without any other error W Compressor locked W Compressor harness disconnected N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Precaution before turning on the power again Make sure the power has been off for at least 30 seconds Turn off the power Disconnect the harnesses U V and W a Check No 15 Inverter analyzer Check with the inverter analyzer RSUK0917C NO Normal gt Correct the power supply replace the outdoor uni
100. oil Cooling Dry No continuity Heating Continuity NO Disconnect the four way valve coil from the connector and check the continuity Four way valve coil resistance at 1000 2000 NO gt Replace the outdoor unit PCB gt Replace the four way valve coil Fig 1 Voltage at S80 220 240 VAC Time Compressor ON Replace the four way valve R15737 R11904 Refrigerant system check Is the discharge pipe thermistor disconnected from the holder Y NO YES Check for refrigerant leakage See the service diagnosis on refrigerant shortage gt Reconnect the thermistor gt Replace the refrigerant R15833 95 Service Diagnosis SiBE041029EB Check 5 7 Inverter Analyzer Check Check No 15 B Characteristics Inverter analyzer RSUKO917C If an abnormal stop occurs due to compressor startup failure or overcurrent output when using an inverter unit it is difficult to judge whether the stop is caused by the compressor failure or some other failure main PCB power module etc The inverter analyzer makes it possible to judge the cause of trouble easily and securely Connect an inverter analyzer as a quasi compressor instead of compressor and check the output of the inverter W Operation Method Step 1 Be sure to turn the power off Step 2 Install an inverter analyzer in
101. oling operation Wide angle louvers e Timer WEEKLY TIMER operation Vertical auto swing up and down 24 hour ON OFF TIMER Horizontal auto swing right and left e NIGHT SET mode 3 D airflow Auto restart after power failure COMFORT AIRFLOW operation Goin amp Sel diagnosis digital LED display Comfort Auto fan speed e Wiring error check function Control 222224 Indoor unit quiet operation Anti corrosion treatment of outdoor NIGHT QUIET mode automatic heat exchanger OUTDOOR UNIT QUIET operation e Flexibility Multi split split type compatible indoor manual unit INTELLIGENT EYE operation Flexible power supply correspondence Quick warming function High ceiling application preheating operation Chargeless 10m Hot start function Either side drain right or left Automatic defrosting Power selection E Operation Automatic operation Remote 5 room centralized controller option Control Program dry operation Remote control adaptor e Fan only e normal open pulse contact option Lifestyle New POWERFUL operation __ Remote control adaptor _ e Convenience non inverter normal open contact option Inverter POWERFUL operation e DIII NET compatible adaptor option Priority room setting m Remote Wireless e COOL HEAT mode lock Controller Wired option HOME LEAVE operation ECONO operation Indoor unit ON OFF button e Si
102. on and the MODE button at the same time 3 Press the MODE button twice 77 appears on the display to indicate that trial operation is selected 4 Press the MODE button and select operation mode 5 Trial operation terminates in approximately 30 minutes and switches into normal mode To quit a trial operation press the ON OFF button DAIKIN 7 0 1 0 omor C TEMP 3 2 3 4 i5 C R9663 105 Trial Operation and Field Settings SiBE041029EB Field Settings 4 Field Settings 41 When 2 Units are installed 1 Room Outline Indoor Unit PCB Caution Wireless Remote Controller When 2 indoor units are installed in 1 room 1 of the 2 indoor units and the corresponding wireless remote controller can be set for different addresses Both the indoor unit PCB and the wireless remote controller need alteration Cut the address setting jumper JA on the control PCB Address 1 R2872 Replace the PCB if you accidentally cut a wrong jumper Jumpers are necessary for electronic circuit Improper operation may occur if you cut any of them W Cutthe address setting jumper E Jumper ADDRESS EXIST 1 CUT 2 R6573 Trial Operation and Field Settings 106 Field Settings SiBE041029EB 4 2 Facility Setting Cooling at Low Outdoor Temperature Out
103. onnecting or disconnecting Caution connectors or parts may be damaged Check the power supply voltage Is the voltage fluctuation within 10 from the rated value YES Turn off the power and rotate the fan by hand NO Correct the power supply Does the fan NO rotate smoothly Replace the indoor fan motor Turn the power on and start operation Turn off the power and Note The motor may break when the disconnect the fan motor motor connector is disconnected Does the fan while the power is turned on rotate nnector then turn th sure to turn off the power P before reconnecting the YE Y connector S Check No 02 Check the output of the fan motor connector Motor power supply voltage 310 340 VDC NO gt Replace the indoor unit PCB NO Control voltage 15 VDC generated Replace the indoor unit PCB Y Rotation NO Stop the fan motor command voltage Replace the indoor 1 5 VDC unit PCB Y Check No 02 Check the output of the fan motor connector Rotation pulse NO Replace the indoor generated fan motor gt Replace the indoor unit PCB Rotation pulse NO generated gt Replace the indoor fan motor gt Replace the indoor unit PCB R19350 Service Diagnosis 58
104. ons Compressor protection input current discharge pipe temperature heating peak cut freeze up protection defrost Determine lower limit frequency The maximum value is set as a lower limit frequency among the frequency lower limits of the following functions Four way valve operation compensation draft prevention pressure difference upkeep 4 Determine prohibited frequency There is a certain prohibited frequency such as a power supply frequency 31 Function and Control SiBE041029EB Control Specification Initial Frequency PI Control When starting the compressor the frequency is initialized according to the AD value and the Q value of the indoor unit AD signal Indoor Frequency Command The difference between the room thermistor temperature and the target temperature is taken as the AD signal and is used for frequency command Temperature AD Temperature AD Temperature AD Temperature AD difference signal difference signal difference signal difference signal 2 0 OFF 0 4 2 0 8 4 0 C 1 5 1 0 5 5 2 5 9 4 5 D 1 0 2 1 0 6 3 0 5 0 0 5 3 1 5 7 3 5 B 5 5 F OFF Thermostat OFF lt Q value Q value is the indoor unit output determined from indoor heat exchanger volume and airflow rate set by remote controller 1 P control The AD value is calculated in each sampling time 15 20 seconds and the frequency is adjusted according to its difference
105. ons 1 through 4 above 50 60 class 71 class A Hz 48 28 B seconds 70 70 3 3 4 3 minute Standby Turning on the compressor is prohibited for 3 minutes after turning it off Except when defrosting 3 3 5 Compressor Protection Function When turning the compressor from OFF to ON the upper limit of frequency is set as follows The function is not activated when defrosting Hz Frequency g pus R13528 50 60 class 71 class A Hz 55 55 B Hz 70 65 C Hz 85 80 D seconds 120 120 E seconds 200 200 F seconds 470 470 Function and Control 34 Control Specification SiBE041029EB 3 4 Discharge Pipe Temperature Control Outline The discharge pipe temperature is used as the internal temperature of the compressor If the discharge pipe temperature rises above a certain level the upper limit of frequency is set to keep the discharge pipe temperature from rising further Detail Stop zone Dropping zone D C Keep zone Up zone Discharge pipe Reset zone temperature R14642 Zone Control Stop zone When the temperature reaches the stop zone the compressor stops Dropping zone The upper limit of frequency decreases Keep zone The upper limit of frequency is kept Up zone The upper limit of frequency increases Reset zone The upper limit
106. or However there is a difference between the temperature detected by room temperature thermistor and the temperature of lower part of the room depending on the type of the indoor unit or installation condition Practically the temperature control is done by the target temperature appropriately adjusted for the indoor unit and the temperature detected by room temperature thermistor 1 2 Frequency Principle Main Control Parameters Additional Control Parameters Inverter Principle The frequency of the compressor is controlled by the following 2 parameters The load condition of the operating indoor unit The difference between the room thermistor temperature and the target temperature The target frequency is adapted by additional parameters in the following cases m Frequency restrictions Initial settings W Forced cooling operation To regulate the capacity a frequency control is needed The inverter makes it possible to alter the rotation speed of the compressor The following table explains the conversion principle Phase Description 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 W When the frequency increases the rotation speed of the compressor increases resulting in an increase of refrigerant circulation This leads to a larger amount of heat exchange per unit
107. or unit PCB m Refrigerant shortage m Water mixed in refrigerant Defective stop valve Service Diagnosis 70 Troubleshooting SiBE041029EB Troubleshooting Check No 01 Refer to P 93 Check No 12 Refer to P 94 Check No 13 Refer to P 95 Check No 14 Refer to P 95 Note N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged _ Discharge YES pipe thermistor gt Insert the thermistor in disconnected position NO Check No 01 NG Check the thermistors gt Replace the discharge pipe Discharge pipe thermistor thermistor Disconnect the connector S40 from the PCB Resistance NO Connect the connectors Connector S40 properly 2 terminals of OL Q1L Check the resistance between the 2 terminals on the connector S40 Disconnect the 2 terminals of the OL Q1L Check the Resistance resistance between the 2 terminals of the OL Q1L Nearly 0 Replace the OL Q1L Nearly 0 Q Replace the OL harness Check No 12 Check the electronic expansion valve NG gt Replace the electronic expansion valve or the coil Check No 13 NG Check the four way gt Replace the four way valve valve or the coil Replace the outdoor u
108. ork After the repair work is complete be sure to conduct a test operation to ensure that the equipment operates normally and explain the cautions for operating the product to the customer Caution Items The caution items are classified into I Warning and Caution The i Warning items are especially important since they can lead to death or serious injury if they are not followed closely The 1 Caution items can also lead to serious accidents under some conditions if they are not followed Therefore be sure to observe all the safety caution items described below Pictograms A This symbol indicates the item for which caution must be exercised The pictogram shows the item to which attention must be paid Q This symbol indicates the prohibited action The prohibited item or action is shown in the illustration or near the symbol This symbol indicates the action that must be taken or the instruction The instruction is shown in the illustration or near the symbol 1 1 Warnings and Cautions Regarding Safety of Workers Warning Do not store the equipment in a room with successive fire sources e g naked flame gas appliance electric heater Be sure to disconnect the power 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 shock If it is necessary to supply power to the equipment to conduct the
109. oting SiBE041029EB 4 25 Output Overcurrent Detection Error Code L5 Method of Error An output overcurrent is detected by checking the current that flows in the inverter DC section Detection Error Decision position signal error occurs while the compressor is running Conditions speed error occurs while the compressor is running An output overcurrent signal is fed from the output overcurrent detection circuit to the microcomputer Ifthe error repeats the system is shut down Reset condition Continuous run for about 5 minutes without any other error Poor installation condition Closed stop valve Defective power module Wrong internal wiring Abnormal power supply voltage Defective outdoor unit PCB Defective compressor Supposed Causes 91 Service Diagnosis SiBE041029EB Troubleshooting Troubleshooting Check No 15 Refer to P 96 Check No 17 Refer to P 98 Check No 18 Refer to P 98 Check No 22 Refer to P 100 Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged N Caution An output overcurrent may result from wrong internal wiring If the system is interrupted by an output overcurrent after the wires have been disconnected and reconnected for part replacement check the wiring again Check No 17 Check the installation condition NO Stop valve fully open Fully open the stop valve T
110. ponds with the error code but the right side number does not long Both the left side and right side numbers correspond with the error code The numbers indicated when you hear the long beep are the error code Error codes and description Refer to page 54 4 Press the MODE button R4275 The right side number blinks R14968 Service Diagnosis 52 Service Check Function SiBE041029EB 5 Press the TEMP A or TEMP V button and change the number until you hear the long beep R4277 6 Diagnose by the sound The left side number does not correspond with the error code two consecutive beeps The left side number corresponds with the error code but the right side number does not long Both the left side and right side numbers correspond with the error code 7 Determine the error code The numbers indicated when you hear the long beep are the error code Error codes and description Refer to page 54 8 Press the MODE button to exit from the diagnosis mode R4278 The display 7 means the trial operation mode Refer to page 105 for trial operation R14969 9 Press the ON OFF button twice to return to the normal mode o JC J R9670 n Note When the remote controller is left untouched for 60 seconds it returns to the normal mode 53 Service Diagnosis SiBE041029EB Troubleshoo
111. r and disconnect the harnesses U V and W Y Inverter analyzer RSUKO0917C Check No 15 Check with the inverter analyzer Y YES gt Correct the power supply or replace the outdoor unit PCB NO Turn off the power and reconnect the harnesses Turn on the power again and start operation Check No 18 Check the discharge pressure R18318 Service Diagnosis 74 Troubleshooting SiBE041029EB 4 16 Four Way Valve Abnormality 1 V Error Code zh Method of Error The room temperature thermistor and the indoor heat exchanger thermistor are checked if they Detection function within their normal ranges in each operation mode Error Decision A following condition continues over 1 minute after operating for 10 minutes Conditions W Cooling Dry A B lt 5 C W Heating B A lt 5 C A Room thermistor temperature B Indoor heat exchanger temperature f the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Disconnection of four way valve coil Defective four way valve coil or harness Defective outdoor unit PCB Defective thermistor Refrigerant shortage Water mixed in refrigerant Defective stop valve 75 Service Diagnosis SiBE041029EB Troubleshooting Troubleshooting Check No 01 Refer to P 93 Check No 13 Refer to P 95 Check No 1
112. re correct Operation sometimes Check the power supply A power failure of 2 to 10 cycles stops air stops conditioner operation Operation lamp OFF Check the outdoor temperature Heating operation cannot be used when the outdoor temperature is 18 CWB or higher and __ cooling operation cannot be used when the outdoor temperature is below 10 CDB Diagnose with remote controller 54 indication The unit operates but does Check for wiring and piping errors in not cool or does not heat the connection between the indoor unit and outdoor unit Check for thermistor detection errors Check if the thermistor is mounted securely Check for faulty operation of the Set the unit to cooling operation and check the electronic expansion valve temperature of the liquid pipe to see if the electronic expansion valve works Diagnose with remote controller 54 indication Diagnose by service port pressure Check for refrigerant shortage 60 and operating current Large operating noise and Check the output voltage of the 100 vibrations power module Check the power module m Check the installation condition Check if the required spaces for installation specified in the installation manual are provided Service Diagnosis 50 Service Check Function SiBE041029EB 3 Service Check Function Check Method 1 display screen TIMER lt ARC433 Series gt 1 When the timer cancel button i
113. rence purpose only Thermistor temperature C Resistance 20 197 8 15 148 2 10 112 1 5 85 60 0 65 93 5 51 14 10 39 99 15 31 52 20 25 02 25 20 00 30 16 10 35 13 04 40 10 62 45 8 707 50 7 176 R25 C 20 3950 K 150 100 50 R11905 Multimeter CH Room temperature CH Resistance range thermistor 819558 Multimeter 19559 W When the room temperature thermistor is soldered on a PCB remove the PCB from the control PCB to measure the resistance W When the connector of indoor heat exchanger thermistor is soldered on a PCB remove the thermistor and measure the resistance 93 Service Diagnosis SiBE041029EB Check 5 2 Fan Motor Connector Output Check Check No 02 1 Check the connection of connector 2 Check the motor power supply voltage output pins 4 7 3 Check the motor control voltage pins 4 3 4 Check the rotation command voltage pins 4 2 5 Check the rotation pulse pins 4 1 n Motor power supply voltage 310 340 VDC Unused Unused GND Motor control voltage 15 VDC Rotation command voltage 1 6 5 VDC Rotation pulse input RO Od R19654 5 3 Power Supply Waveforms Check Check No 11 Measure the power supply waveform between No
114. rmistor gt Replace the defective thermistor s of the following thermistors Outdoor temperature thermistor Discharge pipe thermistor Outdoor heat exchanger thermistor functioning Replace the indoor heat exchanger thermistor Outdoor temperature thermistor 43 Discharge pipe thermistor 45 Outdoor heat exchanger thermistor gt Replace the outdoor unit PCB R16059 87 Service Diagnosis SiBE041029EB Troubleshooting 4 23 Electrical Box Temperature Rise Error Code Method of Error Detection Error Decision Conditions Supposed Causes compressor off An electrical box temperature rise is detected by checking the radiation fin thermistor with the m With the compressor off the radiation fin temperature is above A C W The error is cleared when the radiation fin temperature drops below B C the electrical components the outdoor fan starts when the radiation fin temperature rises above C C and stops when it drops below B C C B C C RX50 60G2V1B 95 80 85 RX50 60G3V1B 122 64 113 71 class 100 70 85 Defective outdoor fan motor Short circuit Defective radiation fin thermistor Disconnection of connector Defective outdoor unit PCB Troubleshooting Check No 17 Refer to P 98 Caution Turn off the power and turn it on again Check
115. rol in 78 4 19 Compressor System Sensor Abnormality 79 4 20 Position Sensor Abnormality eu an 81 4 21 CT or Related Abnormality RX50 60G2V1B 71 Class Only 84 4 22 Thermistor or Related Abnormality Outdoor 86 4 23 Electrical Box Temperature 2 22 42 22 88 4 24 Radiation Fin Temperature 89 4 25 Output Overcurrent Detection 91 A td 93 5 1 Thermistor Resistance 93 5 2 Fan Motor Connector Output 94 5 3 Power Supply Waveforms 94 5 4 Electronic Expansion Valve 94 5 5 Four Way Valve Performance Check 95 5 6 Inverter Unit Refrigerant System 95 5 7 Inverter Analyzer Check 96 5 8 Rotation Pulse Check on the Outdoor Unit 97 5 9 Installation Condition 98 5 10 Discharge Pressure 4444 98 5 11 Outdoor Fan System 99 5 12 Circuit Short Check cepe tere rest t
116. roperly so that there is no force pulling the cable at the connection terminals Improper connections may cause excessive heat generation or fire When wiring between the indoor and outdoor units make sure that the terminal cover does not lift off or dismount because of the cable If the cover is not mounted properly the terminal connection section may cause an electrical shock excessive heat generation or fire Do not damage or modify the power cable Damaged or modified power cable may cause an electrical shock or fire Placing heavy items on the power cable and heating or pulling the power cable may damage the cable oe e eocoso vii SiBE041029EB Safety Cautions Warning Do not mix air or gas other than the specified refrigerant R 32 R 410A R 22 in the refrigerant system If air enters the refrigerating system an excessively high pressure results causing equipment damage and injury If the refrigerant gas leaks be sure to locate the leaking point and repair it before charging the refrigerant After charging refrigerant make sure that there is no refrigerant leak If the leaking point cannot be located and the repair work must be stopped be sure to perform pump down and close the service valve to prevent the refrigerant gas from leaking into the room The refrigerant gas itself is harmless but it may generate toxic gases when it contacts flames such as fan and other he
117. s held down for 5 seconds 27 is displayed on the temperature Timer cancel button R18206 2 Press the timer cancel button repeatedly until a long beep sounds W The code indication changes in the sequence shown below No Code No Code No Code 1 12 e 23 Ha 2 uu 13 24 Ei 3 14 uit 25 PH 4 EA 15 ni 26 LI 5 15 16 27 M 6 17 cy 28 H 7 5 18 5 29 8 FS 19 30 ue 9 es 20 JS 31 UH 10 us 21 Un 32 11 ES 22 aS 33 m Note 1 Ashort beep or two consecutive beeps indicate non corresponding codes 2 To return to the normal mode hold the timer cancel button down for 5 seconds When the remote controller is left untouched for 60 seconds it also returns to the normal mode 3 Not all the error codes are displayed When you cannot find the error code try the check method 2 Refer to page 52 51 Service Diagnosis SiBE041029EB Service Check Function Check Method 2 1 Press the center of the TEMP button and the MODE button at the same time to enter the diagnosis mode R4272 The left side number blinks R14967 2 Press the TEMP A or TEMP V button and change the number until you hear the two consecutive beeps or the long beep R4274 3 Diagnose by the sound beep The left side number does not correspond with the error code two consecutive beeps The left side number corres
118. s may be damaged Check No 01 Refer to P 93 Check the air passage Is there any short circuit S gt Provide sufficient air passage Check the air filter gt Clean air filter NO Check the dust accumulation on the indoor heat exchanger YE Clean the indoor heat exchanger NO Check No 01 Check the indoor heat exchanger thermistor As described in the thermistor characteristic chart NO gt Replace the thermistor gt Replace the indoor unit PCB R15715 Service Diagnosis 56 Troubleshooting SiBE041029EB 4 4 Fan Motor DC Motor or Related Abnormality Error Code nu Method of Error The rotation speed detected by the Hall IC during fan motor operation is used to determine Detection abnormal fan motor operation Error Decision The detected rotation speed does not reach the demanded rotation speed of the target tap and Conditions is less than 50 of the maximum fan motor rotation speed Supposed Remarkable decrease in power supply voltage Causes Layer short inside the fan motor winding Breaking of wire inside the fan motor Breaking of the fan motor lead wires Defective capacitor of the fan motor Defective indoor unit PCB 57 Service Diagnosis SiBE041029EB Troubleshooting Troubleshooting Check No 02 Refer to P 94 N Be sure to turn off the power switch before c
119. s restored in the same condition as before the power failure m Note Ittakes 3 minutes to restart the operation because the 3 minute standby function is activated Function and Control 28 Function of Thermistor SiBE041029EB 2 Function of Thermistor 1 Outdoor Heat Exchanger Thermistor 2 Discharge Pipe Thermistor 3 Indoor Heat Exchanger Thermistor Electronic expansion valve Four way valve ompressor 2 Comp R14247 The outdoor heat exchanger thermistor is used for controlling the target discharge pipe temperature The system sets the target discharge pipe temperature according to the outdoor and indoor heat exchanger temperature and controls the electronic expansion valve opening so that the target discharge pipe temperature can be obtained In cooling operation the outdoor heat exchanger thermistor is used for detecting the disconnection of the discharge pipe thermistor When the discharge pipe temperature drops below the outdoor heat exchanger temperature by more than a certain value the discharge pipe thermistor is judged as disconnected In cooling operation the outdoor heat exchanger thermistor is used for high pressure protection The discharge pipe thermistor is used for controlling discharge pipe temperature If the discharge pipe temperature used in place of the inner temperature of the compressor rises abnormally the operating frequency becomes lower or the opera
120. ss for cooling dry heating and fan Vertical Swing up and down Horizontal Swing Cooling Dry Heating Fan right and left Dv s uv A ow 4 i 24 2 4010 as 5 lt V5 E A 35 55 S R2814 R2815 R2813 R2816 R2817 3 D Airflow Alternative repetition of vertical and horizontal swing motions enables uniform air conditioning of the entire room When the horizontal swing and vertical swing are both set to automatic operation the airflow becomes 3 D airflow The horizontal and vertical swing motions are alternated and the airflow direction changes in the order shown in the following diagram 1 The vertical blades louvers move from the right to the left 2 The horizontal blades flaps move downward 3 The vertical blades louvers move from the left to the right 4 The horizontal blades flaps move upward 1 lt 1 2 el fie 3 R19554 19 Function and Control SiBE041029EB Main Functions 1 4 Fan Speed Control for Indoor Unit Phase control and fan speed control contains 9 steps LLL LL SL L ML M MH H and HH The airflow rate can be automatically controlled depending on the difference between the room thermistor temperature and the target temperature Automatic Fan In automatic fan speed operation the step SL is not available Speed Control Step Cooling Heating LLL LL L ML M MH H HH POWERFUL 86833 R6834 airflow rate is automatically
121. stead of a compressor Note Make sure the charged voltage of the built in smoothing electrolytic capacitor drops to 10 VDC or below before carrying out the service work 2 Connect the terminals to the terminals of the inverter analyzer 1 Remove the terminals from the compressor Inverter analyzer Be careful not to let the terminals U V W touch each other Otherwise high voltage is applied R18322 Reference If the terminals of the compressor are not FASTON terminals difficult to remove the wire on the terminals it is possible to connect wires available on site to the outdoor unit from output side of PCB Do not connect them to the compressor at the same time otherwise it may result in incorrect detection Step 3 Activate the power transistor test operation from the outdoor unit 1 Press the forced cooling operation ON OFF button for 5 seconds Refer to page 104 for the position Power transistor test operation starts Service Diagnosis 96 SiBE041029EB m Diagnose method Diagnose according to 6 LEDs lighting status 1 If all the LEDs are lit uniformly the compressor is defective Replace the compressor 2 If the LEDs are not lit uniformly check the power module Refer to Check No 22 3 If NG in Check No 22 replace the power module Replace the main PCB The power module is united with the main PCB If OK in Check No 22 check if there is
122. t PCB YES Turn off the power and reconnect the harnesses Turn on the power again and restart the system Emergency YES stop without compressor Replace the compressor running System shut NO down after errors repeated gt Check the outdoor electronic several times expansion valve coil Replace it as required YES Replace the compressor R18317 Service Diagnosis 72 Troubleshooting SiBE041029EB 4 14 DC Fan Lock er Error Code cog Method of Error An error is determined with the high voltage fan motor rotation speed detected by the Hall IC Detection Error Decision W The fan does not start in 30 seconds even when the fan motor is running Conditions m Ifthe error repeats the system is shut down Reset condition Continuous run for about 5 minutes without any other error Supposed W Disconnection of the fan motor Causes W Foreign matter stuck in the fan Defective fan motor W Defective outdoor unit PCB Troubleshooting N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Check No 16 Refer to P 97 fan motor conneetor gt Turn off the power and reconnect the connector NO i YES Foreign matters in i gt Remove the foreign matters NO Turn on the power Y Rotate the fan NO gt Replace the outdoor fan motor Check No 16 Check the rotation pulse input on
123. t temperature are converted to the following states for 20 minutes Operation mode Fan speed Target temperature COOL H tap A rpm 18 C DRY Dry rotating speed A rpm Lowered by 2 5 C HEAT H tap Arpm 32 C FAN H tap A rpm AUTO Same as cooling heating in The target temperature is POWERFUL operation kept unchanged A 90 rpm Ex POWERFUL operation in cooling Target temp 18 C POWERFUL It counts 20 minutes also ON the remote controller POWERFUL nua 2 AMEN Ending condition 1 rpm 1 After the lapse of 20 minutes Hitap 2 Operation OFF 3 POWERFUL operation is OFF Set tap pon je etu R19177 Note POWERFUL Operation cannot be used together with OUTDOOR UNIT QUIET Operation 1 12 Clock Setting ARC433 Series The clock can be set by taking the following steps 1 Press the CLOCK button 000 is displayed and blinks 2 Press the TIMER A or TIMER V button to set the clock to the present time Holding down the TIMER or TIMER button increases or decreases the time display rapidly 3 Press the CLOCK button again blinks and clock setting is completed TIMER button CANCEL 9 R18286 27 Function and Control SiBE041029EB Main Functions 1 13 Other F
124. target discharge pipe temperature is obtained from the indoor and outdoor heat exchanger temperature and the electronic expansion valve opening 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 target discharge pipe temperature is set as to become SC Subcool the aim SH a The inclination does not change depending on the operating condition SH Superheat R18921 The electronic expansion valve opening and the target discharge pipe temperature are checked every 20 seconds The opening degree of the electronic expansion valve is adjusted by the followings Target discharge pipe temperature Actual discharge pipe temperature Previous discharge pipe temperature Function and Control 42 Control Specification SiBE041029EB 3 12 Malfunctions 3 12 1 Sensor Malfunction Detection Sensor malfunction can be detected in the following thermistors 1 Outdoor heat exchanger thermistor 2 Discharge pipe thermistor 3 Radiation fin thermistor 4 Outdoor temperature thermistor 3 12 2 Detection of Overcurrent and Overload Outline An excessive output current is detected and the OL temperature is observed to protect the compressor Detail m f the OL compressor head temperature exceeds 120 130 C depending the model the system shuts down the compressor m I
125. tdoor Unit PCB RX50 60G2V1B 71 Class Only Error Code un Method of Error Communication error between microcomputer mounted on the main microcomputer and PM1 Detection Error Decision The abnormality is determined when the data sent from the PM1 can not be received for 9 Conditions seconds W The error counter is reset when the data from the PM1 can be successfully received Supposed m Defective outdoor unit PCB Causes Troubleshooting N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Turn off the power and turn it on again NO Error again gt The cause can be an external factor other than the malfunction Observe the operating condition in long term gt Replace the outdoor unit PCB R19180 Service Diagnosis 66 Troubleshooting SiBE041029EB 4 10 Unspecified Voltage Between Indoor Unit and Outdoor Unit Error Code Method of Error Detection Error Decision Conditions Supposed Causes Troubleshooting ro 22 The supply power is detected for its requirements pair type is different from multi type by the indoor outdoor transmission signal The pair type and multi type are interconnected Wrong models interconnected Wrong wiring of connecting wires Wrong indoor unit PCB or outdoor unit PCB mounted Defective indoor unit PCB Defective outdoor unit PCB
126. ted gt Replace the compressor R19373 61 Service Diagnosis SiBE041029EB Troubleshooting 4 7 Low voltage Detection or Over voltage Detection Error Code Method of Error Detection Error Decision Conditions Supposed Causes IZ Low voltage detection An abnormal voltage drop is detected by the DC voltage detection circuit Over voltage detection An abnormal voltage rise is detected by the over voltage detection circuit Low voltage detection The voltage detected by the DC voltage detection circuit is below 150 200 V depending the model W The compressor stops if the error occurs and restarts automatically after 3 minute standby Over voltage detection W Anover voltage signal is fed from the over voltage detection circuit to the microcomputer W The compressor stops if the error occurs and restarts automatically after 3 minute standby Power supply voltage is not as specified Defective DC voltage detection circuit Defective over voltage detection circuit Defective PAM control part Disconnection of compressor harness Short circuit inside the fan motor winding Noise Momentary drop of voltage Momentary power failure Defective outdoor unit PCB Service Diagnosis 62 Troubleshooting SiBE041029EB Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Ch
127. tible gas leaks If the combustible gas leaks and remains around the unit it may cause a fire oe viii Safety Cautions SiBE041029EB Caution Check to see if the parts and wires are mounted and connected properly and if the connections at the soldered or crimped terminals are secure Improper installation and connections may cause excessive heat generation fire or an electrical shock If the installation platform or frame has corroded replace it Corroded installation platform or frame may cause the unit to fall resulting in injury Check the grounding and repair it if the equipment is not properly grounded Improper grounding may cause an electrical shock Be sure to measure the insulation resistance after the repair and make sure that the resistance is 1 MO or higher Faulty insulation may cause an electrical shock Be sure to check the drainage of the indoor unit after the repair Faulty drainage may cause the water to enter the room and wet the furniture and floor Do not tilt the unit when removing it The water inside the unit may spill and wet the furniture and floor ZR A Be sure to install the packing and seal on the installation frame properly For unitary type If the packing and seal are not installed properly water may enter the room and only wet the furniture and floor SiBE041029EB Used Icons 2 Used Icons The following
128. ting 4 Troubleshooting 4 1 Error Codes and Description Error Codes Description System Normal uk Refrigerant shortage 60 ue Low voltage detection or over voltage detection 62 un Signal transmission error between indoor unit and outdoor unit 64 un Unspecified voltage between indoor unit and outdoor unit 67 rad Dn Indoor unit PCB abnormality 55 n Freeze up protection control heating peak cut control 56 n5 Fan motor DC motor or related abnormality 57 EH Indoor heat exchanger thermistor or related abnormality 59 cS Room temperature thermistor or related abnormality 59 Outdoor unit PCB abnormality 68 ESK OL activation compressor overload 70 tik Compressor lock 72 DC fan lock 73 Input overcurrent detection 74 Four way valve abnormality 75 53 Discharge pipe temperature control 77 ra High pressure control in cooling 78 a Compressor system sensor abnormality 79 H5 Position sensor abnormality 81 Ha CT or related abnormality RX50 60G2V 1B 71 class only 84 H5 Outdoor temperature thermistor or related abnormality 86 uM Discharge pipe thermistor or related abnormality 86 Outdoor heat exchanger thermistor related abnormality 86 LJ Electrical box temperature rise 88 L Radiation fin temperature rise 89 L5 Output overcurrent detection 91 Py Radiation fin thermistor or relat
129. tion halts The discharge pipe thermistor is used for detecting disconnection of the discharge pipe thermistor The indoor heat exchanger thermistor is used for controlling the target discharge pipe temperature The system sets the target discharge pipe temperature according to the outdoor and indoor heat exchanger temperature and controls the electronic expansion valve opening so that the target discharge pipe temperature can be obtained In cooling operation the indoor heat exchanger thermistor is used for freeze up protection control If the indoor heat exchanger temperature drops abnormally the operating frequency becomes lower or the operation halts In heating operation the indoor heat exchanger thermistor is used for detecting the disconnection of the discharge pipe thermistor When the discharge pipe temperature drops below the indoor heat exchanger temperature by more than a certain value the discharge pipe thermistor is judged as disconnected 29 Function and Control SiBE041029EB Control Specification 3 Control Specification 3 1 Mode Hierarchy Outline The air conditioner control has normal operation mode forced operation mode and power transistor test mode for installation and servicing Detail Air conditioner control mode Forced operation mode Forced cooling operation for pump down operation Power transistor test mode Normal operatio
130. unctions 1 13 1 Hot Start Function In order to prevent the cold air blast that normally occurs when heating operation is started the temperature of the indoor heat exchanger is detected and the airflow is either stopped or significantly weakened resulting in comfortable heating n Note The cold air blast is prevented using similar control when defrost control starts or when the thermostat is turned ON 1 13 2 Signal Receiving Sign When the indoor unit receives a signal from the remote controller the unit emits a signal receiving sound 1 13 3 Indoor Unit ON OFF Button An ON OFF button is provided on the display of the unit W Press the ON OFF button once to start operation Press once again to stop it m The ON OFF button is useful when the remote controller is missing or the battery has run out The operation mode refers to the following table Operation mode Temperature setting Airflow rate AUTO 25 C Automatic Indoor unit ON OFF button R19647 lt Forced cooling operation gt Forced cooling operation can be started by pressing the ON OFF button for 5 to 9 seconds while the unit is not operating Refer to page 104 for detail n Note When the ON OFF button is pressed for 10 seconds or more the forced cooling operation is stopped 1 13 4 Auto restart Function If a power failure including one for just a moment occurs during the operation the operation restarts automatically when the power i
131. urn off the power and turn it on again to start the system See if the same error occurs NO Monitor the power supply voltage discharge and suction pressures and other factors for a long term Error again ves Possible causes Momentary drop of power supply voltage Compressor overload Short circuit Turn off the power and disconnect the harnesses U V and W Keep on using gt Check the connectors other components Y Check No 15 Inverter analyzer Check with the inverter analyzer RSUKO0917C Y YES gt Correct the power supply or replace the outdoor unit PCB NO Check No 22 Check the power module gt Replace the outdoor unit PCB YES Turn off the power and reconnect the harnesses Turn on the power again and start operation Y Check the power supply voltage NO Voltage as rated gt Correct the power supply YES Short circuit or NO wire breakage between compressor s coil phases Check the discharge pressure Go to Check No 18 YES gt Replace the compressor R19545 Service Diagnosis 92 SiBE041029EB 5 Check 5 1 Thermistor Resistance Check Check No 01 Disconnect the connectors of the thermistors from the PCB and measure the resistance of each thermistor using a multimeter The data is for refe

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