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1. x500 90 gt Wiring Diagrams VC DID MDC FG FRAME GROUND 20 FUSE ay HIP H2P PILOT LAMP MIS MS MS SWING MOTOR Mf STEPPING MOTOR AIP ASP PRINTED CIRCUIT BOARD FIELD WIRING RIT R2T 925 9200 CONNECTOR SiW OPERATION SWITCH sic LIMIT SWITCH RED TERMINAL STRIP BZ BUZZER BLU Wr PROTECTIVE EARTH ie CAUTION WHT NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS INDOOR TURNED OFF AND THEN BACK ON AGAIN 3D085644 FU2 3 15 1 REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS lt OUTDOOR C5 C6 C119 DB1 DB2 DB3 FU1 FU2 FU3 IPM1 IPM2 L L1 L1R M1C M1F MRCW MRM10 MRM20 N Appendix CAPACITOR DIODE BRIDGE FUSE INTELLIGENT POWER MODULE LIVE COIL REACTOR COMPRESSOR MOTOR FAN MOTOR MAGNETIC RELAY NEUTRAL OVERLOAD PROTECTOR IPM2 T 147 10111213 ix gt S lt e L 1 pees xx MA X12A 5800 RIRN zd 710 p
2. HEATING 3D059586T Appendix 112 Piping Diagrams SiIBE041401E RXG50L2V1B OUTDOOR UNIT 9 HEATEXCHANGER OUTDOOR TEMPERATURE THERMISTOR 7 9 7 9 12 7 7 9 CAPILLARY TUBE 1 7 9 CuT 7 9 4 0 Cul MUFFLER 79 7 9 r 4 0 CuT REFRIGERANT FLOW APILLARY TUBE 2 6 4 CuT 7 9 CAPILLARY TUBE 3 4 0 CuT 3 gt HEATING 4 0 E EXCHANGER THERMISTOR CAPILLARY TUBE 4 3 1 1 ELECTRONIC PROPELLER EXPANSION 7 VALVE 12 7 FILTER 127 s A 9 5 CuT x I O 1 TN RECEIVER 7 9 CuT A 1 MUFFLER ON HEATING MUFFLER FIELD PIPING 7 9 CuT Y z 6 4 6 4 8 STOP VALVE MUFFLER O c 12 7 CuT FIELD PIPIN DISCHARGE PIPE pve 1276 THERMISTOR pce GAS STOP VALVE 7 con WITH SERVICE PORT 30080605 113 SiBE041401E 2 Wiring Diagrams 2 1 Indoor Unit FTXG20 25 35 50LV1BW S WIRELESS REMOTE CONTROLLER ee ee 2 2 Outdoor Unit RXG20 25 35L2V1B INDOOR L rm NOTE FIELD WIRING 1 25 3
3. nennen 109 Silicon Grease on Power Transistor Diode Bridge 110 Trial Operation and Field Settings 1 41401 Tips for Servicing 1 Tips for Servicing 1 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 Hexagonal wrench Close Liquid stop valve Gas stop valve gt Service port R13628 Refer to forced cooling operation below 1 2 Forced Cooling Operation 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 S1W 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 with standby electricity saving function turned off
4. 63 4 6 Front Panel Open Close 64 47 elngeranbshortade ue n Metu ae ates 65 4 8 Low voltage Detection or Over voltage Detection 67 4 9 Signal Transmission Error Between Indoor Unit and Outdoor Unit 69 4 10 Unspecified Voltage Between Indoor Unit and Outdoor Unit 71 4 11 Outdoor Unit PCB 72 4 12 OL Activation Compressor Overload 73 4139 Compressor ioe cere 75 76 4 15 Input Overcurrent Detection 77 4 16 Four Way Valve 78 4 17 Discharge Pipe Temperature 80 4 18 High Pressure Control in 81 4 19 Compressor System Sensor 82 4 20 Position Sensor Abnormality 83 4 21 DC Voltage Current Sensor Abnormality 20 25 35 Class Only 85 4 22 Thermistor or Related Abnormality Outdoor Unit 86 4 23 Electrical Box Temperature 5 88 4 24 Radiation
5. rience tte naa ret en oen s 37 3 3 Controls Mode Changing 39 3 4 Discharge Pipe Temperature 40 3 5 Input Current Control 41 3 6 Freeze up Protection Controls 42 3 7 Heating Peak cut 42 38 43 3 9 Liquid Compression Protection 43 TO D lrost GORW OM i o ced 44 3 11 Electronic Expansion Valve 45 3 12 48 Function and Control SiBE041401E Main Functions 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 9 5 Target temperature Room thermistor temperature a Set temperature Room temperature R12321 The temperature of the room is detected by the room temperature thermistor Howe
6. Blue White lt RME Orange Brightness Each time the Brightness button on the remote controller is pressed the brightness of the Setting multi monitor lamp changes to high low or off 1 14 Clock Setting ARC466 Series The clock can be set by taking the following steps 1 Press the CLOCK button 000 is displayed and MON and blink 2 Press the SELECT or button to set the clock to the current day of the week 3 Press the CLOCK button blinks 4 Press the SELECT A or button to adjust the clock to the present time Holding down the SELECT button increases or decreases the time display rapidly 5 Press the CLOCK button to set the clock Point the remote controller at the indoor unit Function and Control when pressing the button blinks and clock setting is completed SELECT button CLOCK button R19926 28 Main Functions SiBE041401E 1 15 WEEKLY TIMER Operation Outline Detail 29 Up to 4 timer settings can be saved for each day of the week up to 28 settings in total The 3 items ON OFF temperature and time can be set Setting example of the WEEKLY TIMER The same timer settings are made for the week from Monday through Friday while different timer settings are made for the weekend Monday Tuesday to Friday Make timer settings up to programs 1 4 Pr
7. inlet 114 2 2 4 114 Appendix 1 41401 Piping Diagrams 1 Piping Diagrams 1 1 Indoor Unit FTXG20 25 35LV1BW S FTXG50LV1BW S INDOOR UNIT INDOOR UNIT 6 4 6 4CuT HEAT EXCHANGER ond EXCHANGER THERMISTOR FIELD PIPING FIELD PIPING ON HEAT EXCH 6 4CuT 6 4CuT FIELD PIPING FIELD PIPING 9 5CuT 9 5CuT 12 7CuT 9 5CuT OEU m REFRIGERANT FLOW REFRIGERANT FLOW COOLING COOLING HEATING HEATING 4D085645 4D085834 1 2 Outdoor Unit RXG20 25 35L2V1B OUTDOOR UNIT OUTDOOR TEMPERATURE HEAT EXCHANGER THERMISTOR Hamm 3 7 0 CuT a 9 ELECTRONIC EXPANSION u 6 4CUT fo 4 8 MUFFLER MUFFLER 6 WITH WITH t FILTER FILTER PROPELLER FAN 5 5 5 MUFFLER WITH FILTER 5 Yes FOUR WAY VALVE FIELD PIPING ONHEATING maur o 164 00m LO MUFFLER o VALVE DISCHARGE PIPE THERMISTOR 9 5 9 5 FIELD PIPING MOFFLER GAS STOP 6507 ACCUMULATOR VALVE REFRIGERANT FLOW COOLING
8. oor 2 4 1 3 30 34 1 3 45 in Max 8 200 4 400 10 200 8 200 4 400 10 200 11 600 4 400 15 400 Running 29 28 27 44 42 40 28 28 27 44 42 40 ea ie ee TE F Dan m S Heat Insulation Max Dierense __ m 5 656 SSS Chargeless Peg indoor Unit O Front Panel Color Fan Air Direction Control Air Filter Temperature Control Packaged Dimensions HxWxD mm _______ ______ 800 1101309 Teo _________ Gross Weight ___ OO e Sound H M L SL 38 32 25 19 41 34 28 19 38 32 25 19 41 34 28 19 evel Sound Power Power Level Casing Color W 0 naa a 1 05 Ss Power Consumption Rated Ww 50 5050 ___786 786 2786 500 500 500 767676 Power 818 8L 1 807 789 792 098 818 811 807 789 792 708 SSCA Dimensions HxWxD soes Packaged Dimensions HxWxD mm 62 96 omeo _
9. 42 38 Outdoor COrnlrole iiec debite 43 3 9 Liquid Compression Protection 43 TOJDSITOSE GOMU Ol 44 3 11 Electronic Expansion Valve 45 2 12 asc 48 Table of Contents SiBE041401E Part 5 Remote 49 SIL LEM S I A LEE SR EM E 50 Part 6 Service 5 5 DA 1 General Problem Symptoms and Check Items 53 2 Troublesnootng BED oio c dani a 54 21 NIE 54 2 2 PIN NU MEET UU TT 54 3 oervice DIadhOSlS ete 55 Pe E EE 58 4 1 Error Codes and Description 58 4 2 Indoor Unit PCB Abnorrmallly 59 4 3 Freeze up Protection Control Heating Peak cut Control 60 44 Fan Motor DC Motor or Related 61 4 5 Thermistor or Related Abnormality Indoor Unit
10. Sound pum H SL dB A 46 43 47 44 46 43 47 44 evel Sound Power Level Drawing No a pt Note B The data are based on the conditions shown in the table below Cooling Piping Length Conversion Formulae kcal h kW x 860 Btu h kW x 3412 Indoor 27 CDB 19 CWB Indoor 20 Es Outdoor 35 CDB 24 CWB Outdoor 7 CDB 6 CWB cfm m min x 35 3 5 Specifications SiBE041401E Specifications 50 Hz 220 230 240 V poor Cag 3514 38 40 14 5 0 in Max 11 900 4 800 13 000 11 900 4 800 13 000 13 600 4 800 17 100 Running Current Rated 504846 55 58 51 50 48 46 55 53 51 eee Power Factor Rated 802 789 789 611 808 805 802 709 799 814808805 EX Dan ______ Heat Insulation Max Dierense __ m 5 656 SSS Gmgdes 60 _ indoor Unit Front Panel Color Fan Air Direction Control Air Filter Temperature Control Packaged Dimensions HxWxD mm O O O OoOO aos Teo 60 Gross Weight Gross ___ Sound H M L SL 45 34 26 20 45 37 29 20 45 34 26 20 45 37 29 20 evel
11. 67 4 9 Signal Transmission Error Between Indoor Unit and Outdoor Unit 69 4 10 Unspecified Voltage Between Indoor Unit and Outdoor Unit 71 4 11 Outdoor Unit PCB Abnormality sees 72 4 12 OL Activation Compressor Overload 73 413 Compressor LOCK m edu eia 75 DG EIE 76 4 15 Input Overcurrent Detection 77 4 16 Four Way Valve 78 4 17 Discharge Pipe Temperature 80 4 18 High Pressure Control in 81 4 19 Compressor System Sensor Abnormality 82 4 20 Position Sensor Abnormality 83 4 21 DC Voltage Current Sensor Abnormality 20 25 85 Class 85 4 22 Thermistor or Related Abnormality Outdoor Unit 86 4 23 Electrical Box Temperature 5 88 4 24 Radiation Fin Temperature Rise 89 4 25 Output Overcurrent Detection 91 TS 93 5 1 Thermistor Resistance Check 93 5 2 Fan Motor Connector Output Check 94 5 3 Power Supply Waveforms 94 5 4 Electronic Expansion Valve 94
12. ELECTRONIC EXPANSION VALVE COIL M1F FAN MOTOR S40 S50 S70 S80 S90 Y1S REVERSING SOLENOID VALVE COIL MRCW MRM10 MRM20 MR30 HN3 CONNECTOR Z1C Z2C 73 742 FERRITE CORE MR30 A MR30 B MAGNETIC RELAY R1T R2T R3T THERMISTOR e PROTECTIVE EARTH N NEUTRAL SA1 SURGE ABSORBER EARTH 3D079016A Q1L OVERLOAD PROTECTOR 115 Appendix Revision History Month Year Revised contents Waming 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 e Use only those parts and accessories supplied or specified by Daikin 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 prod
13. 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 within 10 from the rated value NO Correct the power supply YES Check the connection of the compressor harness YES Loose or disconnecied Reconnect the harness NO Does the outdoor fan rotate smoothly NO Replace the outdoor fan motor and the outdoor unit PCB YES Precaution before turning on the power again Make sure the power has been off for at least 30 seconds Turn on the power System restarted Repeat a few times YES Disturbance factors Noise mM Check for such factors for a Power supply distortion long term NO Error again within 3 minutes after turning on the power NO the outdoor unit PCB YES the indoor unit PCB R19955 68 Troubleshooting SiBE041401E 4 9 Signal Transmission Error Between Indoor Unit and Outdoor Unit Error Code Li 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 Reduction of power supply voltage Causes Wiring error B Breaking of the connecting wires between t
14. Command 20 25 35 class 58 Hz frequency 50 class 66 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 S1W 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 Protection functions have priority over all other functions during forced cooling operation Trial Operation and Field Settings 104 Tips for Servicing 1 41401 Indoor Unit Indoor unit ON OFF button R19927 Outdoor Unit 20 25 35 class Terminal board Screwdriver R18256 Outdoor Unit 50 class Terminal board Forced cooling operation ON OFF button SW1 Serewanver 820102 N Caution When pressing the button on the outdoor unit do not touch the terminal board It has a high voltage and may cause electric shock 105 Trial Operation and Field Settings 1 41401 2 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 sur
15. 35 CDB 24 CWB Outdoor 7 CDB 6 CWB cfm m min x 35 3 7 Specifications SiBE041401E Part 3 Printed Circuit Board Connector Wiring Diagram 9 21 OUTDO ON 11 20 25 95 GAS 11 2 2 13 Printed Circuit Board Connector Wiring Diagram 8 Indoor Unit 1 Indoor Unit Control PCB A1P 1 521 525 532 541 542 546 0 5200 10 JC 11 LED A 12 F1U F2U 13 V1 H1 H2 H3 SiBE041401E Connector for centralized control HA Connector for INTELLIGENT EYE sensor PCB Indoor heat exchanger thermistor Connector for swing motors Connector for reduction motor front panel mechanism and limit switch Connector for signal receiver display PCB Connector for fan motor Connector for terminal board indoor outdoor transmission Connector for terminal board frame ground Fan speed setting when compressor stops for thermostat OFF Power failure recovery function auto restart Refer to page 109 for detail LED for service monitor green Fuse 3 15 A 250 V Varistor F2U 521 LEDA 525 546 2 357399 1 Caution Replace the PCB if you accidentally cut the jumpers other than JB and JC Jumpers are necessary for electronic circuit Improper operation may occur if you cut any of them Printed Circuit Board
16. NEXE _ t 10 550 N HN2 HL2 M I J 511 11 B HN 3P273862 4 Printed Circuit Board Connector Wiring Diagram 14 15 SiBE041401E Part 4 Function and Control Te MAN UR CIOS ninth 16 1 1 Temperature 16 etter 16 1 3 Operation Star ng Control itio tote mei a pas eu eee vedete netus 18 1 4 Direction Dd aee ate e eeu aed 19 1 5 Fan Speed Control for Indoor 20 1 6 Program Dry ream ote er tela qd 21 17 a Cons E a OTT ubt wes 22 1 8 Thermostat mou 23 19 NGAT SET 24 Oe eames 24 1 11 2 INTELLIGENT EYE Operation 25 1 12 Inverter POWERFUL Operation 27 1 13 Multi Monitor Lamp TIMER Lamp 27 4 28 115 WEEKLY Operation a 29 35 2 ThertmislOF c 36 3 2 is i o e vale nie x ub D LU 37 Mode etm 37 3 2
17. PI control 9 y 0 Hz Hz a Fsec E sec G sec H sec Compressor ON r 5 ON OFF J pulse Electronic expansion valve opening K pulse Initial opening R19555 Function and Control 44 Control Specification SiIBE041401E 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 1 Electronic expansion valve control when starting operation 2 Electronic expansion valve control when the frequency changes 3 Electronic expansion valve control for defrosting 4 Electronic expansion valve control when the discharge pipe temperature is abnormally high 5 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 in each operation mode Status During target discharge pipe temperature control Frequency change under target discharge pipe Frequency change under discharge pipe thermistor disconnection control temperature control Discharge pipe thermistor disconnection Frequency change under starting control Q O o o Yl Q
18. and of the diode bridge 081 is approximately 0 V before checking Measure the resistance between the pins of the DB1 referring to the table below B lf the resistance is less than 1 kW short circuit occurs on the main circuit Negative terminal of multimeter positive terminal for digital multimeter Positive terminal of multimeter negative terminal for digital multimeter several kQ several MQ tu Rag o a IPM qm VER Multimeter 50 class 540 570 Fue Dc_Ne BAN 528 m 158 195 Multimeter R19943 Service Diagnosis Check 100 SiBE041401E 5 13 Power Module Check Check No 22 1 Note Check to make sure that voltage between and of the diode bridge or the power module is approximately 0 V before checking B 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 diode bridge or the power module and the U V or W terminal of the compressor with a multimeter Evaluate the measurement results referring to the following table Negative terminal of multimeter Diode bridge UVW Diode bridge positive terminal for digital r or multimeter
19. installed in 1 107 3 2 Model aeu E 107 3 3 Standby Electricity SAVING 108 3 4 Jumper _________ 109 4 Silicon Grease on Power Transistor Diode Bridge 110 Part ADDOeHODGou cuiu iicin uin iir Qr D i Cw RR RR RD A Vice Piping Dlagra MS 112 uere TEE 112 T2 IER 112 2 is WIRING DIGAS 114 Zoi 8 Tm 114 2 2 Outdoor Unit Table of Contents iV Safety Cautions SiIBE041401E 1 Safety Cautions Be sure to read the following safety cautions before conducting repair work 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 N Warning and Caution The N Warning items are especially important since they can lead to death or serious injury if they are not followed closely The N 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 This symbol indicates the item for which caution must be exercised The pictogram shows the item to which attention must b
20. the unit starts energy saving operation For dry operation the temperature cannot be set with a remote controller but the target temperature is shifted internally 26 Main Functions 51 041401 1 12 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 soeed and the compressor frequency Detail When the POWERFUL button is pressed the fan speed and target temperature are converted to the following states for 20 minutes COOL H tap A rom DRY Dry rotating speed A rpm Lowered by 2 5 C DRY FAN __________ The target temperature is POWERFUL operation kept unchanged A 60 80 rpm depending on the model Ex POWERFUL operation in cooling Target temp 18 C POWERFUL ON POWERFUL 20 minutes R19177 1 Note POWERFUL Operation cannot be used together with OUTDOOR UNIT QUIET Operation 1 13 Multi Monitor Lamp TIMER Lamp Current operation mode is displayed in color of the lamp of the indoor unit Operating status can be monitored even in automatic operation in accordance with the actual operation mode Multi monitor lamp TIMER lamp R19925 27 Function and Control SiBE041401E Main Functions The lamp color changes according to the operation Uo Hed Blue io e Green geso0
21. Check No 17 Check the installation condition Change the installation location or direction Clean the outdoor heat exchanger Check No 19 Check the outdoor fan NG Heplace the outdoor fan motor Reconnect the connector or OK fan motor lead wires Check No 18 Check the discharge pressure OK NG Replace the stop valve Check No 12 Check the electronic expansion valve NG Replace the electronic expansion valve or the coil Replace the outdoor unit OK PCB Check No 01 Check the outdoor heat exchanger thermistor NG Replace the outdoor heat exchanger thermistor OK Replace the outdoor unit PCB R15667 Service Diagnosis 1 41401 Troubleshooting 4 19 Compressor System Sensor Abnormality Error Code Hui Method of Error The system checks the DC current before the compressor starts Detection Error Decision B The DC current before compressor start up is out of the range 0 5 4 5 V sensor output Conditions converted to voltage value B The DC voltage before compressor start up is below 50 V Supposed Broken or disconnected harness Causes Defective outdoor unit PCB Troubleshooting Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Check the relay harness for the compressor Is the harness broken Replace the harness Turn off the power and turn it on
22. Check the following connector Model Type Wall mounted type Terminal board Control PCB H2 59 Service Diagnosis SiBE041401E Troubleshooting 4 3 Freeze up Protection Control Heating Peak cut Control Error Code Method of Error Detection Error Decision Conditions Supposed Causes Troubleshooting Check No 01 Refer to P 93 Service Diagnosis gt oa Freeze up protection control 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 Freeze up protection control During cooling operation the indoor heat exchanger temperature is below 0 C Heating peak cut control During heating operation the indoor heat exchanger temperature is above 65 C Short circuited air Clogged air filter of the indoor unit Dust accumulation on the indoor heat exchanger Defective indoor heat exchanger thermistor Defective indoor unit PCB Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Check the air passage YES Is there any short circuit Provide sufficient air passage Check the air filter lt gt Clean the
23. upper limit to prevent abnormal high pressure The operating frequency limitation is judged with the indoor heat exchanger temperature Stop zone BC C C Dropping zone D C Keep zone EC Indoor heat exchanger Reset zone thermistor temperature R14645 9925 35 cass Function and Control 42 Control Specification SIBE041401E 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 uni
24. 4 96 V and more or 0 04 V and less during compressor operation B Disconnection of connector B Thermistor corresponding to the error code is defective B 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 Correct the connection Check No 01 Check the thermistor resistance value the thermistor Replace the indoor unit PCB R15717 Indoor heat exchanger thermistor L5 Room temperature thermistor Service Diagnosis 1 41401 Troubleshooting 4 6 Front Panel Open Close Fault gt 7 Error Code Method of Error Detection Error Decision If the error repeats the system is shut down Conditions Supposed Defective reduction motor Causes Malfunction or deterioration of the front panel mechanism B Defective limit switch Troubleshooting Be sure to turn power switch before connecting or disconnecting Caution connectors or parts may be damaged Restart and check the movement Does the front panel move Remove the front panel and check the movement Does the front panel mechanism move Replace the assembly of the front panel mechanism Replace the harness and reduction motor Does the front panel open close fully Replace the assembly of the fr
25. 5 5 Four Way Valve Performance 95 5 6 Inverter Unit Refrigerant System 95 5 7 Inverter Analyzer 96 5 8 Rotation Pulse Check on the Outdoor Unit 97 5 9 Installation Condition 98 9310 Discharge Pressure 99 5 11 Outdoor Fan System 99 5 12 Circuit Short Ed n dei pubs neni Im beu MUS 100 5 19 Power Module Check ue ed dt 101 General Problem Symptoms and Check Items SIBE041401E 1 General Problem Symptoms and Check Items Symptom Check Item Measures Reference Page The unit does not operate Check the power supply Check if the rated voltage is supplied Pp 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 24 C or higher and cooling operation cannot be used when the outdoor temperature is below 10 Diagnose with remote controller 58 indication Check the remote controller Check if address settings for the remote 107 addresses controller and indoor unit are correct Operation sometimes Check the power supply A power failure of 2 to 10 cycles stops air stops con
26. Connector Wiring Diagram SiBE041401E Signal Receiver Display PCB 1 S51 A2P 2 52 S1W 4 H1P 5 H2P 6 JA Indoor Unit Connector for control PCB Connector for room temperature thermistor Forced cooling operation ON OFF button Refer to page 104 for detail LED for operation multi color LED for INTELLIGENT EYE green Address setting jumper Refer to page 107 for detail H1P H2P 51 52 3 357402 1 Caution Replace the PCB if you accidentally cut the jumpers other than JA Jumpers are necessary for electronic circuit Improper operation may occur if you cut any of them INTELLIGENT EYE Sensor PCB 1 536 A3P Connector for control PCB 3E860004 1 Printed Circuit Board Connector Wiring Diagram 10 Outdoor Unit 2 Outdoor Unit 21 20 25 35 Class Main PCB PCB2 510 520 540 550 570 580 590 5100 HR2 U V W FU2 LED A V1 SiBE041401E Connector for 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 forced operation button PCB Connector for filter PCB Connector for reactor Connector for compressor Fuse 3 15 A 250 V LED for service monitor green Varistor Jumper for improvemen
27. Overcurrent Detection Error Code 5 Method of Error An output overcurrent is detected by checking the current that flows in the inverter DC section Detection Error Decision A position signal error occurs while the compressor is running Conditions A speed error occurs while the compressor is running An output overcurrent signal is fed from the output overcurrent detection circuit to the microcomputer If the error repeats the system is shut down Reset condition Continuous run for about 11 minutes 20 25 35 class or 5 minutes 50 class 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 SiBE041401E Troubleshooting Check 15 Refer to P 96 Check No 17 Refer to P 98 Check 18 Refer to P 99 Check No 22 Refer to P 101 Service Diagnosis Troubleshooting Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged 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 Stop valve fully open Fully open the stop valve Turn off
28. Target temperature ee ee eee Operation stops at the set hours TIMER operation 0 5 NIGHT SET Mode ON temperature shift R18917 lt Heating gt Target temperature TIMER operation temperature shift R19386 1 10 ECONO Operation Outline ECONO operation reduces the maximum operating current and the power consumption This operation is particularly convenient for energy saving It is also a major bonus when breaker capacity does not allow the use of multiple electrical devices and air conditioners It can be easily activated by pushing the ECONO button on the wireless remote controller Detail B When this function is activated the maximum capacity also decreases B The remote controller can send the ECONO command when the unit is in cool or dry operation This function can only be set when the unit is running Pressing the ON OFF button on the remote controller cancels the function This function and POWERFUL operation cannot be used at the same time The latest command has the priority Maximum during normal operation Power consumption and current uana Maximum during ECONO operation ECONO Operation Time R19427 Function and Control 24 Main Functions 51 041401 1 11 2 INTELLIGENT EYE Operation Outline The following functions can be performed by a motion sensor INTELLIGENT EYE 1 Reduction of the capacity when there is nobody in the room in order to save
29. VDC 2 Check if the Hall IC generates the rotation pulse 0 15 VDC 4 times between the pins 10 12 10 13 when the fan motor is manually rotated once 13 HV Hall IC 12 HU Hall IC 11 Control voltage 15 VDC 10 9 Free pin 8 Free pin 7 Phase W 6 Free pin 5 Free pin 4 Phase V 3 Free pin 2 Free pin 1 Phase 219957 Service Diagnosis SiBE041401E 5 9 Installation Condition Check Check No 17 Service Diagnosis 50 class Check Make sure that the voltage of 320 30 V is applied is rotated 1 turn by hand 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 rotation pulses 0 15 VDC are input at the pins 1 4 when the fan motor 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 PCB S70 O O O Installation condition check Check the allowable dimensions of the air suction and discharge area NG OK Is the discharged air YES short ci
30. again Restart operation and error displayed again No problem Keep on running Replace the outdoor unit PCB R11712 Service Diagnosis 82 SiBE041401E Troubleshooting 4 20 Position Sensor Abnormality Error Code Method of Error Detection Error Decision Conditions Supposed Causes 83 ve compressor start up failure is detected by checking the compressor running condition through the position detection circuit If the error repeats the system is shut down B Reset condition Continuous run for about 11 minutes 20 25 35 class or 5 minutes 50 class without any other error Disconnection of the compressor relay cable Defective compressor Defective outdoor unit PCB Start up failure caused by the closed stop valve Input voltage is outside the specified range Service Diagnosis SiBE041401E Troubleshooting Check No 15 Refer to P 96 Check No 18 Refer to P 99 Check No 20 Refer to P 100 Service Diagnosis Troubleshooting Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Turn off the power Check the power supply voltage NO Voltage as rated YES Check No 18 Check the discharge pressure NO YES Check No 20 Check the short circuit of the diode bridge gt lt YES Check the connection Electrical components or compressor harnesses conn
31. be damaged Fan motor connector disconnected Turn off the power and reconnect the connector Foreign matters in or around the fan Remove the foreign matters NO Turn on the power Rotate the fan Fan rotates smoothly Replace the outdoor fan motor Check No 16 Check the rotation pulse input on the outdoor unit PCB Replace the outdoor fan motor Pulse signal generated Replace the outdoor unit PCB R15675 76 Troubleshooting SiBE041401E 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 99 77 a An input overcurrent is detected by checking the input current value with the compressor running The current exceeds about 9 25 20 A depending on the model 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 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
32. compressor decreases resulting in a decrease of refrigerant circulation This leads to a smaller amount of heat exchange per unit 16 Main Functions 51 041401 The following drawing shows schematic view of the inverter principle Refrigerant circulation rate high high speed gt Amount of heat exchanged air large D 9 32 gt Amount of heat gt exchanged air small Amount of heat exchanged air large Amount of heat exchanged air small low speed mmm 50 Hz ity 60 Hz freq variable Refrigerant circulation rate low R2812 Inverter Features The inverter provides the following features B The regulating capacity can be changed according to the changes in the outdoor temperature and cooling heating load B 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 B 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 B Energy saving heating and cooling Once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power Frequency Limits The following functions regulate the minimum and maximum frequency Frequency Fu
33. discharge pipe thermistor is judged as disconnected 36 Control Specification SIBE041401E 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 operation mode Fan Cooling includes drying Heating Heating Defrosting Stop indoor unit OFF Preheating operation Discharging from capacitor Stop R19522 1 Note Unless specified otherwise a dry operation command is regarded as cooling operation 3 2 Frequency Control Outline 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 0 by PI control the target frequency is used as the command frequency Dropping function Input current control etc Upper limit frequency Upper limit function FMAX Compressor protection function Command frequency Limit frequency Skip control Target frequency Initial frequency PI control Defrost control Lower limit frequency Lower limit function FMIN Four way valve operation compensation etc R18023 Detail 1 Determine command frequency Command frequency is determined in th
34. discharge pipe thermistor B Disconnection of connector 540 Disconnection of 2 terminals of OL Q1L Defective OL Q1L B Broken OL harness B Defective electronic expansion valve or coil B Defective four way valve or coil B Defective outdoor unit PCB Refrigerant shortage Water mixed in refrigerant B Defective stop valve 73 Service Diagnosis SiBE041401E Troubleshooting Check No 01 Refer to P 93 Check No 12 Refer to P 94 Check 13 Refer to P 95 Check No 14 Refer to P 95 1 Note Service Diagnosis Troubleshooting Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Caution Discharge pipe thermistor disconnected Insert the thermistor in position Check No 01 Check the thermistors Replace the discharge pipe Discharge pipe thermistor thermistor Connectors are properly connected Disconnect the connector S40 from the PCB Check the Resistance resistance between e the 2 terminals on the connector S40 Connect the connectors properly Connector S40 2 terminals of OL Q1L Disconnect the 2 terminals of the OL Q1L Check the Hesistance resistance between the 2 terminals of the OL Q1L Nearly 0 Q Replace the 011 Nearly 0 Q Replace the OL harness Check No 12 NG Check the electronic Replace the electronic
35. displayed on the LCD The EIEII will disappear from the LCD The TIMER lamp goes off Weekly e To reactivate the WEEKLY TIMER operation pressC Jagain Weekly f a reservation deactivated with C 15 activated once again the last reservation mode will be used N CAUTION If not all the reservation settings are reflected deactivate the WEEKLY TIMER operation once Then press C again to reactivate the WEEKLY TIMER operation 33 Function and Control 51 041401 Main Functions delete reservations The individual reservation e 1 Press 500 36 he day of the week and the reservation number will be displayed 2 Press to select the day of the week and the reservation number to be deleted 3 Press and ON or OFF blink 4 and select blank Pressing changes ON OFF TIMER mode Pressing alternates the following items appearing on the LCD in rotational sequence Selecting blank will cancel any reservation you may have JON ONTIMER OFFTIMER blank 5 The selected reservation will be deleted 6 Press ___ e f there are still other reservations WEEKLY TIMER operation will be activated The reservations for each day of the week This function can be used for deleting reservations for each day of the week e t can be used while confirmi
36. 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 78 Troubleshooting Troubleshooting 79 Check No 01 Refer to P 93 Check 13 Refer to P 95 Check No 14 Refer to P 95 SiBE041401E 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 Correct the four way valve coil YES Harness disconnected Reconnect the harness Check the continuity of the four way valve coil and harness Disconnect the harness from the connector Resistance NO between harnesses about Replace the four way 1000 2000 Check 13 NG Check the four way valve Replace the outdoor switching output unit PCB OK Any thermistor YES Reconnect the 7 disconnected thermistor s NO Check No 01 NG Check the thermistors Replace the defective thermistor s OK Check No 14 NG Check the refrigerant Refer to the refrigerant line lina Refrigerant shortage check procedure Water mixed OK Stop valve Replace the four way valve defective or dust clogged R19543 Service Diagnosis 1 41401 Troubleshooting 4 17 Discharge Pipe Temperature Control 3 Method
37. heat exchanger volume and airflow rate set by remote controller PI Control 1 P control The AD value is calculated in each sampling time 15 20 seconds and the frequency is adjusted according to its difference 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 control when other controls are functioning When frequency is dropping Frequency control is carried out only when the frequency drops For controlling lower limit Frequency control 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 38 Control Specification SiBE041401E 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 A C Control Outdoor temperature lt A C Control Co
38. 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 heaters 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 type installation frame only Incorrect use of the installation frame and improper installation may cause the equipment to fall resulting in injury 6 Be sure to install the product securely in the installation frame mounted For unitary type on the window frame only the unit is not securely mounted it may fall and cause injury dispose of the old battery to prevent chi
39. of the week The whole reservation of the selected day of the week will be copied To continue copying the settings to other days of the week repeat step 4 and step 5 The multi monitor lamp blinks twice The TIMER lamp periodically lights orange 6 Press to complete the setting e is displayed on the LCD and WEEKLY TIMER operation is activated B Note on copy mode The entire reservation of the source day of the week is copied in the copy mode In the case of making a reservation change for any day of the week individually after copying the content of weekly reservations 55 and change the settings in the steps of Setting mode Function and Control 32 Main Functions 51 041401 B Confirming a reservation e The reservation can be confirmed Setting Displays 6 00 i 5 00 TUE e 5 2 Normal Confirmation 7 Press The day of the week and reservation number of the current day will be displayed 2 Press to select the day of the week and the reservation number to be confirmed Pressing displays the reservation details To change the confirmed reserved settings select the reservation number and press Next The mode is switched to setting mode Go to setting mode step 2 3 Press to exit confirming mode To deactivate WEEKLY TIMER operation Press C while is
40. set at 10 C to 17 C HEAT or AUTO The unit operates 30 even if it is set at 31 C to 32 e To return to the time setting pressC_ The set temperature is only displayed when the mode setting is on 9 5 Be sure direct the remote controller toward the indoor unit check for a receiving tone and flashing of the multi monitor lamp The temperature and time are set while in ON TIMER operation and the time is set while in OFF TIMER operation The next reservation screen will appear To continue further settings repeat the procedure from step 4 The multi monitor lamp blinks twice The TIMER lamp periodically lights orange The multi monitor lamp will not blink orange if all the reservation settings are deleted Display 10 Press to complete the setting is displayed on the LCD and WEEKLY TIMER operation is activated A reservation made once can be easily copied and the same settings used for another day of the week Refer to Copy mode B Notes on WEEKLY TIMER operation Do not forget to set the clock on the remote controller first The day of the week ON OFF TIMER mode time and set temperature only for ON TIMER mode can be set with WEEKLY TIMER Other settings for ON TIMER are based on the settings just before the operation Both WEEKLY TIMER and ON OFF TIMER operation cannot be used at the same time The ON OFF TIMER oper
41. 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 lt 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 lt indoor heat exchanger temperature 398855 dass seconds B seconds 120 C seconds 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 47 The 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 p
42. through 4 above e Function and Control 1 41401 Control Specification 3 3 4 3 minute Standby Turning on the compressor is prohibited for 3 minutes after turning it off The function is not activated 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 C B sec Time R13528 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 BC C C Dropping zone D C Keep zone EC Reset zone Discharge pipe R14642 temperature 392585dass B CCC pec 99 _ Function and Control 40 Control Specification 1 41401 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 Sto
43. 4 18 Main Functions SiBE041401E 1 4 Airflow Direction Control Power Airflow Dual Flaps Wide Angle Louvers Auto Swing 3 D Airflow COMFORT AIRFLOW Operation 19 The large flap sends a large volume of air downward to the floor and provides an optimum control in cooling dry and heating operation Cooling Dry 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 Heating During heating operation the large flap directs airflow downward to spread the warm air to the entire room The louvers made of elastic synthetic resin provide a wide range of airflow that guarantees comfortable air distribution The following table explains the auto swing process for cooling dry heating and fan Vertical up and down Horizontal Swing Heating Fan let 70 O R19938 R19940 R19941 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 2 The horizontal blades flaps 3 The vertical blades louvers 4 The horizontal blades flaps gt
44. 4 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 improvement of defrost performance Refer to page 109 for detail FU2 520 540 590 528 _ 540 590 x Fe um Fr CE PI Li ine Ex13030 1 5852 1 2P358716 1 Replace the PCB if you accidentally cut the jumpers other than J8 Jumpers are necessary for electronic circuit Improper operation may occur if you cut any of them 13 Printed Circuit Board Connector Wiring Diagram 51 041401 Outdoor Unit Filter PCB PCB1 1 S11 Connector for S10 on main PCB 2 HL1 HN1 S Connector for terminal board 1 Terminal for earth wire 4 HL2 HN2 Connector for HL3 main PCB 5 HL4 HN4 Connector for 512 on main PCB 6 FU1 Fuse 3 15 250 V 7 FUS Fuse 30 A 250 V 8 V2 V3 Varistor 9 SW1 Forced cooling operation ON OFF button Refer to page 104 for detail FUS V2 V3 SW1 FU1 IR Pe ENA
45. 401E 1 Note Function and Control Main Functions 2 The motions in cooling within within 20 min 20 min 2n 20 min gt Human detection ON signal Reset Reset Reset Target temperature Remote controller ON INTELLIGENT ogg 1 01 0 ooo EYE button Operation speed Set speed Fan speed _ R19414 In FAN operation the fan speed is reduced by 60 rpm 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 Airflow direction 2 INTELLIGENT EYE operation Detection method The opposite area of detected area is set as the target direction 2 7 29 Right 7 7 7 N N N N N N N I D 5 83853 Detection signal in both area Shift the airflow direction to area left side Detection signal ON in area A Shift the airflow direction to area B left side Detection signal ON in area B Shift the airflow direction to area A right side Detection signal OFF in both area A and B No change N gt When the detection signal is OFF for 20 minutes in both area and
46. Airflow Direction 19 1 5 Fan Speed Control for Indoor 20 126 Program Diy oerte iino 21 L7 Automatic utut cest E eei Dons Meca ees 22 1 8 Thermostat acces eee hatte Statu ben 23 19 NIGHI SETMOGS i 24 THO ECONO 24 1 11 2 Area INTELLIGENT EYE Operation eese 25 1 12 Inverter POWERFUL Operation ur eeu eroi ec 27 1 13 Multi Monitor Lamp TIMER Lamp 27 Um m aed ie 28 1 15 WEEKLY TIMER Operation V eb v Deve Du talc Ha ates De Dea eens 29 Tao Other FUNCTIONS ascendit iem ban Remate eu ich 35 2 Funcion or MERE POR 36 AA 37 Heraren 37 8 2 Frequency ENTER 37 3 3 Controls at Mode Changing 39 3 4 Discharge Pipe Temperature 40 3 5 Input Current 41 3 6 Freeze up Protection 42 3 7 Healing Contool
47. DAIKIN SiBE041401E Service Inverter Pair Wall Mounted Type L Series Applied Models Inverter Pair Heat Pump eHeat Pump Indoor Unit FTXG20LV1BW FTXG20LV1BS FTXG25LV1BW FTXG25LV1BS FTXG35LV1BW FTXG35LV1BS FTXG50LV1BW FTXG50LV1BS Outdoor Unit RXG20L2V1B RXG25L2V1B RXG35L2V1B RXG50L2V1B SiBE041401E Inverter Pair Wall Mounted Type L Series Table of Contents SiBE041401E eta V 1 1 Warnings and Cautions Regarding Safety of Workers V 1 2 Warnings and Cautions Regarding Safety of Users vii SI lel EE TT D Tm TEE X Part 7 List of FunctionS A 2 Part 2 UE RU IR RN WIRE RR Esel 4 Part 3 Printed Circuit Board Connector Wiring Diagram 8 t Indoor UU 9 2 SECO Oi AMI 11 2 1 320125135 GlASS 11 2 2 a 13 Part 4 Function and Control 2 2 02 222222222222222222222222222222 19 ig RU UU TT 16 1 1 Temperature 16 12 Frequency PIINGIDIC a 16 1 3 Operation Starting 18 1 4
48. Fa A m m Heat Insulation 2 Mex 20 indoor Unit ________ ____ _______ Front Panel Color cim lt i Fan Air Direction Control Air Filter Temperature Contro Packaged Dimensions HxWxD mm O SExii0ix389 Weight Mass _______ Kg H M L SL 5 46 40 32 47 41 35 32 46 40 35 32 47 41 32 evel Sound Power Level Power Level Casing Color naa E re oem E an 1 60 7777 em Rang Gen aa Power Consumption Rated W 1327 1327 1327 1546 1546 1546 1327 1327 1327 1546 1546 1546 Power Factor Rated _ 951 955 958 977 976 077 951 955 9683 977 976 977 Dimensions HxWxD 1 mm 7998060 Packaged Dimensions HxWxD mm 9 9 8 Sound pum H SL dB A 48 44 48 44 48 44 48 44 evel Sound Power Level Drawing No 5 a Des Note The data are based on the conditions shown in the table below Cooling Heaing ____ Piping Length Conversion Formulae kcal h kW x 860 Btu h kW x 3412 Indoor 27 CDB 19 CWB Indoor 20 CDB Es Outdoor
49. Fin Temperature Rise 89 4 25 Output Overcurrent Detection 91 UU UU TS 93 5 1 Thermistor Resistance Check 93 5 2 Fan Motor Connector Output Check 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 96 5 8 Rotation Pulse Check on the Outdoor Unit 97 5 9 Installation Condition 98 5 10 Discharge Pressure Check 99 5 11 Outdoor Fan System 99 5 12 Circuit Short side bI OR ON tu UEM 100 5 19 Power Module Check iti oc e rite 101 Table of Contents SiBE041401E Part 7 Trial Operation and Field Settings 103 T TIPS TOL SOL VIGIDEG desto Pi pes dese iD omn ES Eden Ren E E 104 det PUMP DOWN ten etae pim One Te erate eee 104 1 2 Forced Cooling Operation 104 2 1 RI 106 eU pm 107 3 1 When 2 Units
50. O During defrost control Operation start Starting operation control Control when the frequency changes Target discharge pipe temperature control Discharge pipe thermistor disconnection control High discharge pipe temperature control Defrost control heating only Pressure equalizing control Opening limit control e Available Not available 45 Function and Control SIBE041401E Control Specification 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 and minimum opening of the electronic expansion valve are limited 1 2025 dass Maximum opening pulse 480 480 Minimum opening pulse 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 f
51. Power module Power module UVW Positive terminal of multimeter UVW Power module UVW Power module negative terminal for digital or or multimeter Diode bridge Diode bridge several several O Q 20 25 35 class c 590 R44 R45 42 R41 LL RN C46 a HERD DEL 25 2 g cio 0156 558 12 3 3b z 6 Ee bud 1 Anoy N 68 x es CN CA uM H E 1 4 oo HA1 c7 1 R3 gt 517 4 2 Al Diode bridge R19947 101 Service Diagnosis 50 class 570 526 819944 Diode bridge Service Diagnosis 102 103 SiBE041401E Part 7 Trial Operation and Field Settings MDS TOF SOL VICIDG edu iua 104 IT DOW ODGrallOD Deu eo beoe intet iue bee b Duis 104 1 2 Forced Cooling Operation eine nea aes 104 s Mal tenet siesta Siete TE 106 s SENOS is 107 3 1 When 2 Units are installed in 1 107 3 2 Model Type eeu uie ad 107 3 9 Standby Electricity SAVING Qoo pendere eds 108 3 4 Jumper Settings
52. QUIET operation is not available in Comfort Sensor button FAN and DRY operation COMFORT AIRFLOW OUTDOOR UNIT QUIET Operation INTELLIGENT operation and POWERFUL EYE Operation Back operation cannot be used at Every time you press the the same time Priority is Comfort Sensor button the Off given to the function you pressed last setting changes in the following order Cancel A 95 0 Swing button COMFORT INTELLIGENT the ibd AIRFLOW EYE en you press the Swing button the flap moves up and 1 down or and the louver moves right and left The flap blank e louver stops when you press No setting Combination the Swing button again Weekly Off Timer button Weekly button Press this button and adjust Select button the day and time with the Changes the ON OFF Program button Select button TIMER and WEEKLY Press this button again to TIMER settings complete TIMER setting Back button Next Timer cancel button Clock button WEEKLY 1 6 operation Copy button Cancels the timer setting t cannot be used for the On Timer button WEEKLY TIMER operation Press this button and adjust the day and time with the Select button Press this button again to complete TIMER setting R19929 Reference Refer to the following pages for detail COMFORT AIRFLOW operation P 19 20 Auto swing setting 2
53. Sound Power Level Power Level Casing Color Moro w bm re m E 1 05 a 7777 Ss Ges ee ee Power Consumption Rated w 89 6080 930808 849 849 849 93 9808 Power Factor Rated 77677 810 08 04 777677 810 806 804 Dimensions HxWxD _______ mm ______ Packaged Dimensions HxWxD mm _________ 68 96 ep EL Sound pum H SL dB A 48 44 48 45 48 44 48 45 evel Sound Power Level Drawing No mnm L9 eus Des Note The data are based on the conditions shown in the table below Cooling Heaing ____ Piping Length Conversion Formulae kcal h kW x 860 Btu h kW x 3412 Indoor 27 CDB 19 CWB Indoor 20 CDB Es Outdoor 35 CDB 24 CWB Outdoor 7 CDB 6 CWB cfm m min x 35 3 Specifications 6 Specifications SiIBE041401E 50 Hz 220 230 240 V p Fmembiew _ ______ i 1 x L 48 1 7 53 58 1 7 6 5 16 400 5 800 18 100 16 400 5 800 18 100 Running Current Pate 65 62 59 74 71 68 65 6259 747168 W 1880 1589 10 249 1360 870 1880 1 580 810 2490 Power Factor Rate 51054 60 976 979 794 91 9540 976 973 974 ER egia
54. ___ Gross Weight Wo 16 Sound Bow H M L SL LIN NI 38 32 25 19 40 34 28 19 38 32 25 19 40 34 28 19 evel Sound Power Level Power Level TE Casing Color Compressor Moro w Refrigerant a 1 05 H min 34 5 1 218 31 1 1 098 34 5 1 218 31 1 1 098 31 0 1 094 26 4 932 31 0 1 094 26 4 932 W 2339 X 28 Running Current Rated A 268 258 248 265 255 245 268 258 248 265 255 2456 Power Consumption Rated 478 478 4786 472 472 472 472 472 472 _ Power Factor Rate 811 806 803 810 805 803 811 806 803 810 805 803 _ Saigcuem o Dmensons HxWxD mm 890x765x28b Packaged Dimensions HxWxD mm ________ Weight Mass kg 1 0835 34 A10 2135 GossWegh GrssMas kg y 8 eo Pressure H SL 46 43 47 44 46 43 47 44 Drawing No Note B The data are based on the conditions shown in the table below Conversion Formulae kW x 860 Btu h kW x 3412 Cooling Heaing ____ Piping Length Indoor 27 CDB 19 CWB Indoor 20 CDB Bim Outdoor 35 CDB 24 CWB Outdoor 7 CDB 6 CWB cfm m min x 35 3 Specifications 4 Specifications SiIBE041401E 50 Hz 220 230 240 V
55. 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 Safety Cautions SiBE041401E Use the welder 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 electrical shock excessiv
56. air filter Y O Check the dust accumulation on the indoor heat exchanger E S Clean the indoor heat exchanger NO NO N Check No 01 Check the indoor heat exchanger thermistor As described in the thermistor characteristic chart Replace the thermistor Replace the indoor unit PCB R15715 60 Troubleshooting SiBE041401E 4 4 Fan Motor DC Motor or Related Abnormality Error Code Method of Error Detection Error Decision Conditions Supposed Causes 61 11 e The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation The detected rotation speed does not reach the demanded rotation speed of the target tap and is less than 50 of the maximum fan motor rotation speed Remarkable decrease in power supply voltage 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 Service Diagnosis SiBE041401E Troubleshooting N Caution connectors or parts may be damaged Check No 02 Check the power supply voltage Refer to P 94 Is the voltage fluctuation within 10 from the rated value NO YES Turn off the power and rotate the fan by hand NO Does the fan rotate smoothly YES Turn on the power and start operation Tur
57. area INTELLIGENT EYE operation WEEKLY TIMER operation ECONO operation Clock setting 1 Note Refer to operation manual of applicable model for detail You can download operation manual 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 51 Remote Controller SiBE041401E Service Diagnosis Part 6 Service Diagnosis 1 General Problem Symptoms and Check Items 53 2 TFOUDIGSNOOUNG WIN LED iius oon Peer trist ius entem Ima ius 54 SMC OO ME 54 2 2 PI ME 54 SENVIC DIAGNOS 55 Ao 58 41 Error Codes and Description 58 42 Indoor iae teens 59 43 Freeze up Protection Control Heating Peak cut Control 60 4 4 Fan Motor DC Motor or Related Abnormality 61 4 5 Thermistor or Related Abnormality Indoor Unit 63 4 6 Front Panel Open Close 64 AT Rmelngeranbshortade su si p REEL UU ONCE ieu 65 4 8 Low voltage Detection or Over voltage Detection
58. ation has priority if it is set while WEEKLY TIMER is still active The WEEKLY TIMER will go into standby state and will disappear from the LCD When ON OFF TIMER is up the WEEKLY TIMER will automatically become active Shutting off the circuit breaker power failure and other similar events will render operation of the indoor unit s internal clock inaccurate Reset the clock Function and Control 51 041401 Main Functions Copy mode A reservation made once can be copied to another day of the week The whole reservation of the selected day of the week will be copied Program 1 Program 2 Pcia 3 Program 4 500 Monday 2 COPY 6 00 8 30 17 30 22 00 v Program 1 Program 2 m 3 Program 4 MES 6 00 8 30 17 30 22 00 Setting Displays 8 00m yi p emmm ON 5 00 7 gt lt ON nn WEEKLY MON Lic 1 TUE Lic MO 85 15 30 Confirmation Normal 7 Press 2 Press to confirm the day of the week to be copied Copy 3 Press The whole reservation of the selected day of the week will be copied 4 Press to select the destination day of the week Copy 5 ___ sure to direct the remote controller toward the indoor unit and check for a receiving tone and flashing the multi monitor lamp The reservation will be copied to the selected day
59. compressor Titanium apatite photocatalytic m D gt LO NS LO LO SEU A gt lt LL LL 2 gt gt 2 i 5 15 e e SV 5 x LL LL co gt N 1 LO LO NS LO N e gt lt Reluctance DC motor Comforabie Power airiowfap Bowerarwdud aps e Wasabegie J Wide angle louvers Heating ry operation gt EN Auto swing up and down Good sleep cooling operaron Timer WEEKLY TIMER operation 5 0 ONOFF timer e COMFORT AIRFLOW operation ERA INIGHTSETmode EX Auto swing right and left Comfort Control Auto fan speed Worry Free Auto restart after power failure Durability Self diagnosis digital led display Le Wiring error check function OUTDOOR UNIT QUIET operation manual ee treatment of outdoor heat Ea INTELLIGENT EYE operation Flexibility Multi split split type compatible indoor unit 0 Quick warming function Flexible power supply correspondence preheating operation High ceiling application SS Hot start function Chargeless Automatic defrosting Either side drain right or left Program dry operation 5 room centralized controller option Fanony Remote control adaptor Lifestyle New POWERFUL operation non inverter m normal
60. 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 SiBE041401E Safety Cautions 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 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 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 earth grounding when repairing the equipment in
61. displayed on the R11821 2 Select 5 service check with the Temp A or Temp button 3 Press the Mode button to enter the service check mode R11672 The left side number blinks R11670 4 Press the Temp A or Temp V button and change the number until you hear the two consecutive beeps or the long beep OC Service Diagnosis 56 Service Diagnosis 57 SiBE041401E Diagnose by the sound beep 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 beep 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 Refer to page 58 Press the Mode button R11672 R11673 R11671 Diagnose by the sound beep 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 beep Both the left side and right side numbers correspond with the error code Determine the error code The numbers indicated when you hear the long beep are the error code Error codes and description Refer to page 58 10 Press the Mode button for 5 seconds to exit from the service check mode When the remote controller is left untouched f
62. ditioner operation Operation lamp OFF Check the outdoor temperature Heating operation cannot be used when the outdoor temperature is 24 C or higher and cooling operation cannot be used when the outdoor temperature is below 10 0 Diagnose with remote controller 8 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 indication Diagnose by service port pressure Check for refrigerant shortage and operating current Large operating noise and Check the output voltage of the 101 vibrations power module Check the power module Check the installation condition Check if the required spaces for installation specified in the installation manual are provided 5 5 6 53 Service Diagnosis 1 41401 Troubleshooting with LED 2 Troubleshooting with LED 21 Indoor Unit Operation Lamp The multi monitor lamp blinks when any of the following errors is detected 1 When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions 2 When a signal transmission er
63. e following order of priority 1 Limiting defrost control time 2 Forced cooling 3 Indoor frequency command 37 Function and Control SiBE041401E Control Specification 2 Determine upper limit frequency The minimum value is set as an upper limit frequency among the frequency upper limits of the following functions Compressor protection input current discharge pipe temperature heating peak cut freeze up protection defrost 3 Determine lower 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 Initial Frequency When starting the compressor the frequency is initialized according to the AD value and the Q value of the indoor unit lt AD signal Indoor Frequency Command gt The difference between the room thermistor temperature and the target temperature is taken as the AD signal and is used for frequency command sra signet ators signal Aerenea signal difference signal difference signal difference signal difference signa o 4 20 48 if 40 2 10 so a so 05 15 55 F Thermostat OFF _8_ es Bal lt Q value gt Q value is the indoor unit output determined from indoor
64. e heat generation or fire 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 properly 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 Be sure to use an exclusive power circuit for the equipment and follow ry vil SIBE041401E Safety Cautions 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
65. e paid 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 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 repair 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 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
66. e stop valve cover 3 Disconnect the selective connector for standby electricity saving 4 Turn ON the main power supply 20 25 35 class J Function OFF Function ON factory set R18981 50 class lt a Function OFF Function ON factory set R18926 N Caution Before connecting or disconnecting the selective connector for standby electricity saving make sure that the main power supply is turned OFF Trial Operation and Field Settings 108 Field Settings SiIBE041401E 3 4 Jumper Settings Indoor Unit Function Jumper When connected When cut factory setting Fan speed setting when JB The fan stops Fan speed setting compressor stops for Remote controller setting thermostat OFF effective only 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 9 Outdoor Unit Function Jumper When connected When cut factory setting Improvement of 20 25 35 class 45 Standard control Reinforced control Ex The defrost performance 50 class J8 frequency i the duration time of defrost lengthens For the location of the jumper refer to page 11 13 Caution Replace PCB if you accidentally cut wrong jumper Jumpers are necessary for
67. e temperature is YES 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 Indoor heat exchanger thermistor functioning NO YES I Outdoor temperature thermistor Discharge pipe thermistor Outdoor heat exchanger thermistor hes m Reconnect connectors or thermistors Replace the defective thermistor s of the following thermistors Outdoor temperature thermistor Discharge pipe thermistor Outdoor heat exchanger thermistor the indoor heat exchanger thermistor the outdoor unit PCB R16059 Service Diagnosis 1 41401 Troubleshooting 4 23 Electrical Box Temperature Rise Error Code LI Method of Error An electrical box temperature rise is detected by checking the radiation fin thermistor with the Detection compressor off Error Decision With the compressor off the radiation fin temperature is above Conditions m 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 02538 0 ___ 75 50 class Defective outdoor fan moto
68. e 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 ARC466 Series 1 Press the On Off button to turn on the system 2 Press the center of the Temp button and the Mode button at the same time 3 Select operation with the Temp or Temp button 4 Press the Mode button to start the trial operation 5 Press the Mode button and select operation mode 6 Trial operation terminates in approx 30 minutes and switches into normal mode To quit trial operation press the On Off button T 3 2 3 2 4 5 Ce C OCS 1 6 R19935 Trial Operation and Field Settings 106 Field Settings 1 41401 3 Field Settings 3 1 When 2 Units are installed in 1 Room Outline 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 Indoor Unit PCB Cut the address setting jumper
69. ected as specified NO YES Turn on the power Check the electrolytic capacitor voltage Turn off the power Disconnect the harnesses U V and W Check No 15 Inverter analyzer Check with the inverter analyzer RSUKO917C YES Correct the power supply Replace the stop valve Replace the outdoor unit PCB Reconnect the electrical components or compressor harnesses as specified Replace the outdoor unit PCB Replace the compressor Correct the power supply or replace the outdoor unit PCB R19184 84 Troubleshooting SiBE041401E 4 21 DC Voltage Current Sensor Abnormality 20 25 35 Class Only Error Code Method of Error Detection Error Decision Conditions Supposed Causes Troubleshooting 85 i gt gt DC voltage DC current sensor abnormality is identified based on compressor running frequency and the input current If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error B Defective outdoor unit PCB sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Replace the outdoor unit PCB Service Diagnosis SiBE041401E Troubleshooting 4 22 Thermistor or Related Abnormality Outdoor Unit Error Code Method of Error Detection Error Decision Conditions Supp
70. een off for at least 30 seconds Turn off the power Disconnect the harnesses U V and W Check No 15 Check with the inverter analyzer Inverter analyzer RSUK0917C Correct the power supply or replace the outdoor unit PCB Turn off the power and reconnect the harnesses Turn on the power again and restart the system Emergency stop without compressor running YES Replace the compressor NO System shut down after errors repeated several times NO Check the electronic expansion valve coil Replace it as required YES Replace the compressor R20103 Service Diagnosis SiBE041401E Troubleshooting 4 14 DC Fan Lock Error Code Method of Error Detection Error Decision Conditions Supposed Causes Troubleshooting Check No 16 Refer to P 97 Service Diagnosis gt ar An error is determined with the high voltage fan motor rotation speed detected by the Hall IC The fan does not start in about 15 30 seconds even when the fan motor is running If the error repeats the system is shut down B Reset condition Continuous run for about 11 minutes 20 25 35 class or 5 minutes 50 class without any other error Disconnection of the fan motor Foreign matter stuck in the fan Defective fan motor Defective outdoor unit PCB Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may
71. electricity energy saving operation 2 Dividing the room into plural areas and detecting existence of humans in each area Moving the airflow direction to the area with no human automatically to avoid direct airflow on humans Detail 1 Detection method of INTELLIGENT EYE If the sensor detects the outputs 10 times sec sampling 20 msec or more it judges humans exist 1 lt gt High Sensor output OW Human motion Condition of 10 times or more output Detection signal from the sensor OFF If the detection signal ON continues 3 sec or more it judges humans exist Human detection ON signal OEE R19924 B The sensor detects human motion by receiving infrared rays and displays the pulse wave output B The microcomputer in the indoor unit carries out a sampling every 20 msec and if it detects 10 cycles of the wave in one second in total and when the ON signal continues 3 sec it judges human is in the room as the motion signal is ON B 2 area INTELLIGENT EYE sensor is divided into 2 areas and detects humans in each area B The sensor may detect human motion with up to 20 msec latency Image of 2 area INTELLIGENT EYE Top view 7 N 7 7 N T X N T gt 2 N P 7 x 2 N N A microcomputer judges human existence by the sensor signal from each area A and B R12276 25 Function and Control SiBE041
72. electronic circuit Improper operation may occur if you cut any of them 109 Trial Operation and Field Settings SIBE041401E Silicon Grease on Power Transistor Diode Bridge 4 Silicon Grease on 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 Wipe off the old silicon grease completely Apply the silicon grease evenly See the illustrations below for examples of application Tighten the screws of the power transistor diode bridge Make sure that the heat radiation parts are firmly contacted to the radiation fin gt Note Smoke emission be caused by bad heat radiation when the silicon grease is not appropriately applied OK Evenly applied E Power transistor d or diode bridge T T EL Radiation fin Silicon grease R18015 B NG Not evenly applied R18016 B NG Foreign matter is stuck i i T T 227772 Foreign matter R18017 Trial Operation and Field Settings 110 111 SiBE041401E Part 8 Appendix DIAJ aM Se 112 112 1 2 RE MUR 112 2 114 ZO EM
73. expansion valve expansion valve or the coil OK Check No 13 NG Check the four way us four way valve valve or the coil Replace the outdoor unit OK PCB Check No 14 NG Check j refrigerant Refrigerant shortage pel the line ine Water mixed check procedure Stop valve OK Replace the outdoor unit PCB R19528 OL Q1L activating temperature 120 C OL Q1L recovery temperature 95 C 74 Troubleshooting SiBE041401E 4 13 Compressor Lock Error Code Method of Error Detection Error Decision Conditions Supposed Causes Troubleshooting Check No 15 Refer to P 96 15 ar ON A compressor lock is detected by checking the compressor running condition through the position detection circuit 20 25 35 class Operation stops due to overcurrent If the error repeats the system is shut down B Reset condition Continuous run for about 11 minutes without any other error 50 class Acompressor lock is detected by the current waveform generated when applying high frequency voltage to the motor If the error repeats the system is shut down Reset condition Continuous run for about 5 minutes without any other error Compressor locked Compressor harness disconnected Be sure to turn off 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 b
74. for about 60 minutes without any other error 207258595 98 78 50 class Supposed Defective outdoor fan motor Causes Short circuit 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 PCB 89 Service Diagnosis SiBE041401E Troubleshooting Check No 17 Refer to P 98 Check No 19 Refer to P 99 Caution Turn off the power and turn it on again to start the system YE Error displayed again E NO Check No 19 NG Check the outdoor fan OK NO Radiation fin dirty YES 50 class YES Has the PCB been replaced NO Check the radiation fin temperature Above zoss 98 Troubleshooting Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Check if silicon grease is applied properly on the radiation fin If not apply the silicon grease the outdoor unit PCB the outdoor fan motor Correct the connectors and fan motor leads Replace the outdoor unit PCB Check the installation condition Go to Check No 17 Clean up the radiation fin R19529 d Note Refer to Silicon Grease on Power Transistor Diode Bridge on page 110 for detail Service Diagnosis 90 Troubleshooting SiIBE041401E 4 25 Output
75. he indoor and outdoor units wire No 3 B Defective outdoor unit PCB Short circuit inside the fan motor winding B Defective indoor unit PCB B Disturbed power supply waveform 69 Service Diagnosis SiBE041401E Troubleshooting Check No 11 Refer to P 94 Service Diagnosis Caution connectors or parts may be damaged Check the power supply voltage Is the voltage fluctuation within 10 from the rated value Check the indoor unit outdoor unit connection wires YES Is there any wiring error NO 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 Properly insulated NO Before you check the LED A cancel the standby electricity saving function by starting fan operation with the remote controller EE LED on the outdoor Wait at least for 7 sec after turning on the power NO Is LED A blinking YES Rotate the outdoor fan by hand Does the outdoor fan rotate smoothly NO YES Check No 11 Check the power supply waveform Is there any disturbance Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Correct the power supply Correct the indoor unit outdoor unit connection wires Replace the connection wires between the indoor unit and outdoor unit Diagnose the outdoor unit PCB Replace the outdoor fa
76. he microprocessor is working in order Detection B The system checks if the zero cross signal comes in properly Error Decision The microprocessor program runs out of control Conditions B The zero cross signal is not detected Supposed Defective outdoor unit PCB Causes B Broken harness between PCBs B Noise Momentary drop of voltage Momentary power failure Troubleshooting Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Turn on the power again Before you check the LED A cancel the standby electricity saving function by starting fan operation with the remote controller Wait at least 7 sec after turning on the power NO Is LED A blinking Replace the outdoor unit PCB 2 YES Check if the outdoor unit is grounded NO Grounded Ground the system YES 15 the harness NO broken Zero cross signal abnormality Replace the outdoor unit YES PCB 1 Replace the harness R19932 Service Diagnosis 72 Troubleshooting SiBE041401E 4 12 OL Activation Compressor Overload 2 Method of Error A compressor overload is detected through compressor OL Detection Error Decision Ifthe error repeats the system is shut down Conditions B Reset condition Continuous run for about 60 minutes without any other error Supposed Disconnection of discharge pipe thermistor Causes B Defective
77. he unit may spill and wet the furniture and floor 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 51 041401 Used Icons 2 Used Icons The following 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 1 Note Reference A Reference guides the reader to other places in this binder or e M in this manual where he she will find additional information on a specific topic SiBE041401E Part 1 List of Functions IMMANE 2 List of Functions SIBE041401E Functions 1 Functions Basic Function Inverter with inverter power control Health 4 Clean Air purifying filter Ea PAM control EUN Photocatalytic deodorizing filter Standby electricity saving EN Air purifying filter with photocatalytic Compressor Oval scroll compressor Swing
78. hermistor 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 operation 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
79. ilable V gt e COOL 18 32 C 10 30 Indoor unit quiet Low FAN ai ae 4 ot available M On Off button Press this button once to start ee 2 q e operation Pr n in High Middle high Middle ess once again to stop It n indoor unit quiet operation operation sound becomes weak The airflow rate also decreases In DRY operation the airflow rate Powerful button setting is not available Starts POWERFUL operation R19928 lt ARC466A9 gt Reference Refer to the following pages for detail 1 POWERFUL operation P 27 d Note Refer to the operation manual of applicable model for detail You can download operation manual 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 50 Remote controller 51 041401 Mode button Selects the operation mode AUTO DRY COOL HEAT FAN Econo Quiet button e Every time you press the Econo Quiet button the setting changes in the following order Lamp brightness setting button ECONO OUTDOOR UNIT e Each time you press the QUIET Brightness button the 1 i brightness of the indoor unit iso display changes to high low setting Combination or off OUTDOOR UNIT
80. input overcurrent after the wires have been disconnected and reconnected for part replacement check the wiring again Check No 17 Check the installation condition Start operation and measure the input current ea Replace the outdoor unit YES Turn off the power and disconnect the harnesses U V and W Check No 15 Inverter analyzer Check with the inverter analyzer RSUK0917C YES Correct the power supply or replace the outdoor unit PCB 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 SiBE041401E Troubleshooting 4 16 Four Way Valve Abnormality Error Code Method of Error Detection Error Decision Conditions Supposed Causes Service Diagnosis Z The room temperature thermistor and the indoor heat exchanger thermistor are checked if they function within their normal ranges in each operation mode A following condition continues over 1 10 minutes depending on the model after operating for 5 10 minutes depending on the model Cooling Dry gt A B lt 5 C lt Heating gt B A lt 5 C A Room thermistor temperature B Indoor heat exchanger temperature If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Disconnection of
81. ipe 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 1 41401 Control Specification 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 OL compressor head temperature exceeds 120 C the system shuts down the compressor Ifthe inverter current exceeds 9 25 20 A depending on the model 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 Power consumption Input current 55 Hz Frequency R18342 ll Detecting by discharge pipe temperatu
82. ldren from swallowing it If a child swallows the coin battery see a doctor immediately When replacing the coin battery in the remote controller be sure to 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 combustible gas leaks the combustible gas leaks and remains around the unit it may cause fire vill Safety Cautions SiBE041401E 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 earth grounding and repair it if the equipment is not properly earthed grounded Improper earth grounding may cause an electrical shock Be sure to measure the insulation resistance after the repair and make sure that the resistance is 1 MQ 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 t
83. me 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 96 SiBE041401E 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 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 819646 5 8 Rotation Pulse Check Outdoor Unit PCB Check No 16 97 20 25 35 class 1 Check that the control voltage between the pins 10 11 is 15
84. move from the right to the left move downward move from the left to the right move upward gt R19554 The flap is controlled not to blow the air directly at the people in the room R19922 R19923 Function and Control SiBE041401E Main Functions 1 5 Fan Speed Control for Indoor Unit Outline Automatic Fan Speed Control COMFORT AIRFLOW Operation Function and Control 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 In automatic fan speed operation the step SL is not available HH POWERFUL The airflow rate is automatically controlled within this range when the FAN setting button is set to automatic lt Cooling gt The following drawing explains the principle of fan speed control for cooling Room thermistor temperature target temperature Fan speed 3 2 5 2 1 5 1 C 0 5 C L upper limit is M tap for 30 minutes from the operation start R14588 Heating 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 B The fan speed is controlled automatically B The latest command has the priority be
85. n motor and the outdoor unit PCB Replace the indoor unit PCB Locate the cause of the disturbance of the power supply waveform and correct it R19956 70 Troubleshooting SiBE041401E 4 10 Unspecified Voltage Between Indoor Unit and Outdoor Unit Error Code Method of Error Detection Error Decision Conditions Supposed Causes Troubleshooting 71 pw The supply power is detected for its requirements pair type is different from 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 Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Check the combination of the indoor and outdoor unit NO Match the compatible models YES Are the connecting wires connected property Correct the connection YES Check the code numbers 2P012345 for example of the indoor and outdoor unit PCB with the Parts List NO Matched compatibly Change for the correct PCB YES Replace the indoor unit PCB or the outdoor unit PCB R19506 Service Diagnosis 1 41401 Troubleshooting 4 11 Outdoor Unit PCB Abnormality Error Code rg Method of Error The system checks if t
86. n off the power and disconnect the fan motor Does the fan connector then turn the rotate power on Check No 02 Check the output of the fan motor connector Motor power supply voltage 310 340 VDC NO YES control voltage 15 NO VDC generated YES Rotation NO Stop the fan motor command voltage 1 6 5 VDC 02 YES Check the output of the fan motor connector Rotation pulse NO generated YES Rotation pulse generated Service Diagnosis Note Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Correct the power supply Replace the indoor fan motor The motor may break when the motor connector is disconnected while the power is turned on Be sure to turn off the power before reconnecting the connector Replace the indoor unit PCB Replace the indoor unit PCB Replace the indoor unit PCB Replace the indoor fan motor Replace the indoor unit PCB Replace the indoor fan motor Replace the indoor unit PCB R19750 62 Troubleshooting SiBE041401E 4 5 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 63 moor Lo ns gt p The temperatures detected by the thermistors determine thermistor errors The thermistor input is
87. nctions Four way valve operation compensation Refer to page 39 B Compressor protection function Refer to page 40 B Discharge pipe temperature control Refer to page 40 B Input current control Refer to page 41 B Freeze up protection control Refer to page 42 B Heating peak cut control Refer to page 42 B Defrost control Refer to page 44 Forced Cooling Refer to page 104 for detail Operation 17 Function and Control SiBE041401E 1 3 Operation Starting Control Outline properly Control Flow Main Functions The system carries out the following control at the beginning to conduct every functional parts Opening the front panel fully Closing the flap fully Timing Chart Fan operation starts at 300 rpm Making the fan rotate when the flap passes over the fan banned area Output of the AD signal after the front panel starts moving Running R20133 Start OFF starting control ON i Fully open Front panel Fully close Fully open flap Under running control Fully close Initialising ON Fan Under operation mode control 300rpm OFF Output Under operation mode control AO 8 P from the The outdoor unit provides force Outdoor unit when it receives the AD signal Function and Control Actual position of panel or flap Additional control of motor R2013
88. ng Airflow rate AUTO Indoor unit ON OFF button R19927 Forced cooling operation 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 Note When the ON OFF button is pressed for 10 seconds or more the forced cooling operation is stopped 1 16 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 is restored in the same condition as before the power failure d Note It takes minutes to restart the operation because the 3 minute standby function is activated 35 Function and Control SiBE041401E Function of Thermistor 2 Function of Thermistor 1 Outdoor Heat Exchanger Thermistor 2 Discharge Pipe Thermistor 3 Indoor Heat Exchanger Thermistor Function and Control Electronic expansion valve Four way valve Compressor 2 p 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 t
89. ng or setting reservations 1 Press to select the day of the week to be deleted Weekly 2 Hold for about 5 seconds The reservation of the selected day of the week will be deleted All reservations Weekl Hold for about 5 seconds while in normal display Be sure to direct the remote controller toward the indoor unit and check for a receiving tone This operation is not effective while WEEKLY TIMER is being set All reservations will be deleted Function and Control 34 Main Functions 51 041401 1 16 Other Functions 1 16 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 Note The cold air blast is prevented using similar control when defrost control starts or when the thermostat is turned ON 1 16 2 Signal Receiving Sign When the indoor unit receives a signal from the remote controller the unit emits a signal receiving sound 1 16 3 Indoor Unit ON OFF Button An ON OFF button is provided on the display of the unit Press the ON OFF button once to start operation Press once again to stop it The ON OFF button is useful when the remote controller 15 missing or the battery has run out B The operation mode refers to the following table Operation mode Temperature setti
90. ntrol Discharge pipe temperature lt OFF condition Discharge pipe temperature gt C C Radiation fin temperature gt 90 C Control Il condition Discharge pipe temperature lt D C OFF condition Discharge pipe temperature gt E C Radiation fin temperature gt 90 C 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 150 160 seconds after the operation is stopped 3 3 3 Four Way Valve Operation Compensation Outline Detail 39 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 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 conditions 1
91. of Error An error is determined with the temperature detected by the discharge pipe thermistor Detection Error Decision temperature detected by the discharge pipe thermistor rises above the Conditions compressor stops B The error is cleared when the discharge pipe temperature has dropped below B C 20 25 35 class HO 2 30 45 Hz rising 25 40 Hz dropping 3 below 30 Hz rising below 25 Hz dropping 99 50 class B If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error 1 above 45 Hz rising above 40 Hz dropping 110 86 Supposed Defective discharge pipe thermistor Causes 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 B Defective outdoor unit PCB Troubleshooting Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Check No 01 Refer to P 93 Check No 01 Check the thermistors Di Replace the defective ischarge pipe thermistor thermistor s Outdoor heat exchanger thermistor Outdoor temperature thermistor Check No 12 Refer to P 94 Check No 12 NG Check the electronic the electronic ex
92. ogram 1 Program 2 Program 3 Program 4 ON OF ON OFF F ED _1 1 6 00 8 30 17 30 22 00 Use the copy mode to make settings for Tuesday to Friday because these settings the same those for Monday Program 1 Program 2 Program 3 Program 4 ON OF nD 6 00 8 30 30 17 22 00 Saturday No timer settings Sunday Make timer settings up to programs 1 4 Program 1 Program 2 Program 3 Program 4 OFF OFF ON Up to 4 reservations per day and 28 reservations per week can be set in the WEEKLY TIMER The effective use of the copy mode ensures ease of making reservations The use of ON ON ON ON settings for example makes it possible to schedule operating mode and set temperature changes Furthermore by using OFF OFF OFF OFF settings only the turn off time of each day can be set This will turn off the air conditioner automatically if the user forgets to turn it off Function and Control 51 041401 Main Functions To use WEEKLY TIMER operation Make sure the day of the week and time are set If not set the day of the week and time jii 1 Program 2 m 3 Program 4 OFF OFF Monday NE 25C C 27 gt 6 00 8 30 17 30 22 00 Setting Displays ee 2 lt WEEKLY JON AN V MON j Day and number ON OFF i Temperature 1 Press The day of the week and the reservation number of the current da
93. on the control PCB ADDRESS JA EXIST 1 CUT 2 JA 819936 Caution Replace PCB if you accidentally cut a wrong jumper Jumpers are necessary for electronic circuit Improper operation may occur if you cut any of them Wireless Remote Cut the address setting jumper Controller Replace the remote controller if you cut the jumper on the left side The heating operation will not be available when the jumper on the left side is cut 0 VEZ ADDRESS Jumper EXIST et Do not the left jumper R18416 3 2 Model Type Setting B This remote controller is common to the heat pump model and cooling only model B Replace the remote controller if you cut the jumper on the left side The heating operation will not be available when the jumper on the left side is cut Never cut this jumper R18451 107 Trial Operation and Field Settings 1 41401 Field Settings 3 3 Standby Electricity Saving Outline This function turns power supply OFF to the outdoor unit and sets the indoor unit into standby electricity saving mode thus reducing the power consumption of the air conditioner Detail Following procedure is required for turning ON the function 1 Check that the main power supply is turned OFF Turn OFF if it has not been turned OFF 2 Remove th
94. ont panel mechanism Check the movement of the right and left separately by hand Restart Does the error code reappear It is supposed such as deformation of the panel or stuffed dust Find out the cause Replace the limit switch R17249 d Note You cannot operate the unit by the remote controller when the front panel mechanism breaks down To the dealers temporary measure before repair 1 Turn off the power 2 Remove the front panel 3 Turn on the power Wait until the initialization finishes 4 Operate the unit by the indoor unit ON OFF button Service Diagnosis 64 Troubleshooting SiBE041401E 4 7 Refrigerant Shortage Error Code Method of Error Detection Error Decision Conditions Supposed Causes 65 t i LL 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 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 111 20 25 35 class only Refrigerant shortage is detected by checking the difference between suction and discharge temperature Refrigerant shortage detection The following condi
95. open pulse contact option Hemote control adaptor normal open contact option Prioriy roomseting HEAT mode gt HOME LEAVE operaton Remote indoorunt ONOFFbuton e Suwimcsisp Multi colored indicator lamp multi monitor lamp Monitor brightness setting Indoor unit quiet operation NIGHT QUIET mode automatic R C with back light Temperature display Note Available Not available List of Functions 2 SiBE041401E Part 2 Specifications hig SOC CHIC AMON S sais a 4 Specifications SiBE041401E Specifications 1 Specifications 50 Hz 220 230 240 V O O oves S OS Cooling seating Cooling 25 13 4 3 MN 8 500 4 400 14 600 8 500 4 400 14 600 ll eee meu mem my eo a erre x U SUT 8z en ww mensem eme ue UC 1 m o oo Heat Insulation Max Diference m 56 Gmgdes o Tm o o O 6 Pengeran e maA gm 20 ndoro O O oo ow S Front Panel Color E w g Fan Air Direction Control Air Filter Temperature Contro Packaged Dimensions HxWxD mm O Teo op ______
96. or 60 seconds it returns to the normal mode also R11672 Service Diagnosis 1 41401 Troubleshooting 4 Troubleshooting 41 Error Codes and Description Reference Page gt Refrigerant shortage O N Low voltage detection or over voltage detection Signal transmission error between indoor unit and outdoor unit Unspecified voltage between indoor unit and outdoor unit Indoor Unit Outdoor Unit co Indoor unit PCB abnormality Freeze up protection control heating peak cut control Fan motor DC motor or related abnormality Indoor heat exchanger thermistor or related abnormality Front panel open close fault O Room temperature thermistor related abnormality NO Outdoor unit PCB abnormality N OL activation compressor overload Compressor lock DC fan lock Input overcurrent detection Four way valve abnormality Discharge pipe temperature control High pressure control in cooling Compressor system sensor abnormality Position sensor abnormality N E DC voltage current sensor abnormality 20 25 35 class only Outdoor temperature thermistor or related abnormality IE Discharge pipe thermistor or related abnormality Outdoor heat exchanger thermistor or related abnormality Electrical box temperature rise Radiation fin temperature rise Lok O
97. osed Causes Troubleshooting Service Diagnosis noe I This fault is identified based the thermistor input voltage to the microcomputer A thermistor fault is identified based on the temperature sensed by each thermistor B The thermistor input voltage is 4 96 V and more or 0 04 V and less with the power 2 error is judged if the discharge pipe temperature is lower than the heat exchanger temperature B Disconnection of the connector for the thermistor Thermistor corresponding to the error code is defective B Defective heat exchanger thermistor in the case of 23 error outdoor heat exchanger thermistor in cooling operation or indoor heat exchanger thermistor in heating operation B Defective outdoor unit PCB In case of 75 Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Replace the outdoor unit PCB 4 Radiation fin thermistor 86 Troubleshooting Troubleshooting 87 Check No 01 Refer to P 93 In case of 55 12 SiBE041401E Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Turn on the power again Error displayed again on remote controller Check No 01 Check the thermistor resistance value NO 43 error the discharge pip
98. p Stop Zone Dropping Zone Keep Zone Input current Reset Zone 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 Reset zone Limit of the frequency is canceled Cooling Heating Cooling Aw 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 41 Function and Control 1 41401 Control Specification 3 6 Freeze up Protection Control During cooling operation the signal sent from the indoor unit determines the frequency upper limit 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 D CEU zone Keep zone 0C Stop zone R14718 A C 3 7 Heating Peak cut Control During heating operation the indoor heat exchanger temperature determines the frequency
99. p 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 3 0 2 Cooling Heating switching point Tr lt 2 5 C 3 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 lt Ts Heating operation Cooling Operation Target temperature 2 5 C JM Target temperature 3 0 C Target temperature 2 0 Thermostat OFF Thermostat OFF V Target temperature 2 5 C Heating Operation R20217 Ex When the target temperature is 25 Cooling 23 0 C Thermostat OFF 22 0 C Switch to heating Heating 26 5 C Thermostat OFF 28 0 Switch to cooling Function and Control 22 Main Functions SiIBE041401E 1 8 Thermostat Control Outline Detail 23 Thermostat control is ba
100. pansion valve expansion valve or the coil Check No 14 Refer to P 95 Check No 14 Check the refrigerant line Refer to the refrigerant line check procedure Refrigerant shortage Four way valve Water mixed Stop valve Replace the outdoor unit PCB R15825 Service Diagnosis 80 Troubleshooting SiBE041401E 4 18 High Pressure Control in 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 99 Check No 19 Refer to P 99 81 e XN 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 B The temperature sensed by the outdoor heat exchanger thermistor rises above about 60 65 C depending on the model B Theerror is cleared when the temperature drops below about 50 C The installation space is not large enough Dirty outdoor heat exchanger Defective outdoor fan motor Defective stop valve Defective electronic expansion valve or coil Defective outdoor heat exchanger thermistor Defective outdoor unit PCB N Be sure to turn off the power switch before connecting or disconnecting Caution gt connectors or parts may be damaged Check the installation space
101. r Short circuit Defective radiation fin thermistor Disconnection of connector Defective outdoor unit PCB Supposed Causes Troubleshooting Be sure to turn the power switch before connecting or disconnecting Caution connectors or parts may be damaged Check No 17 Refer to P 98 Turn off the power and turn it on A WARNING again To cool the electrical components the outdoor fan starts when the Check No 19 Refer to P 99 radiation fin temperature rises above C C and stops when it drops below B C Error again or outdoor fan activated Check the radiation fin temperature Above A C Replace the outdoor unit PCB Check No 19 Check the outdoor fan NG the outdoor fan motor Correct the connectors and fan motor lead wire the outdoor unit PCB Radiation fin dirty Check the installation condition Go to Check No 17 Clean up the radiation fin R19556 Service Diagnosis 88 Troubleshooting SiIBE041401E 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 radiation fin temperature with the compressor is above Conditions m The error is cleared when the radiation fin temperature drops below If the error repeats the system is shut down Reset condition Continuous run
102. rcuited NO 15 the outdoor heat YES exchanger very dirty NO Is the airflow blocked by obstacles or winds blowing in the opposite direction Replace the outdoor unit PCB Actual rotation pulse input 0 15 VDC Rotation command voltage 0 6 5 VDC Control voltage 15 VDC 320 VDC R19655 Change the installation location or direction Change the installation location or direction Clean the outdoor heat exchanger Check the outdoor temperature The outdoor temperature should be within the operation range Change the installation location or direction R19401 98 SiBE041401E 5 10 Discharge Pressure Check Check No 18 Discharge pressure check NO Replace the compressor YES Is the stop valve open Open the stop valve Is the connection pipe deformed Replace the pipe installed at the site Is the air filter or indoor outdoor heat exchanger dirty Replace the compressor Clean the dirty air filter or indoor outdoor heat exchanger R19385 5 11 Outdoor Fan System Check Check No 19 DC motor Fan motor NO lead wire connector disconnected Outdoor fan running Go to Check No 16 YES Outdoor fan system is functioning Reconnect the connector R19395 99 Service Diagnosis SiBE041401E 5 12 Main Circuit Short Check Check No 20 1 Note Check to make sure that voltage between
103. re 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 Detecting by the difference of temperature 20 25 35 class only If the difference between suction and discharge temperature is smaller than the specified value it is regarded as refrigerant shortage Refer to page 65 for detail Function and Control 48 49 SiBE041401E Part 5 Remote Controller 1 Remote 50 Remote Controller 51 041401 Remote controller 1 Remote controller Signal transmitter Receiver Display LCD SS Displays the current settings P mir In this illustration each section is M shown with all its displays for the purpose of explanation 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 TAUPE such as a curtain the unit will not Temperature adjustment The maximum distance for buttons communication is approximately 6 m Changes the temperature setting Fan setting button AUTO 18 30 C Selects the airflow rate setting 4 DRY Not ava
104. requency 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 Function and Control 46 Control Specification SiBE041401E 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 valve 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
105. ror occurs between the indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages R19930 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 2 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 Service Diagnosis 54 Service Diagnosis SiIBE041401E 3 Service Diagnosis Method 1 1 When the timer cancel button is held down for 5 seconds 2 is displayed on the temperature display screen Back Off Select On Cancel Timer cancel button C___ Timer lt ARC466 Series gt R14553 2 Press the timer cancel button repeatedly until a long beep sounds B indication changes in the sequence shown below Note 1 A short beep or two consecutive beeps indicate non corresponding codes 2 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 method 2 Refer to page 56 55 Service Diagnosis SIBE041401E Service Diagnosis Method 2 1 Press the center of the Temp button and the Mode button at the same time R11669 5L is
106. sed on the difference between the room thermistor temperature and the target temperature 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 thermistor temperature target temperature Cooling 0 5 0 5 15 Cooling 2 0 C A Dry 2 5 2 0C OFF R12319 Heating OFF thermistor temperature target temperature A 1 5C 1 0 C C 2 12320 Refer to Temperature Control on 16 for detail Function and Control 51 041401 Main Functions 1 9 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 lt Cooling gt
107. t of defrost performance Refer to page 109 for detail S10 95 LEDA OO 2 358715 2 Caution Replace the PCB if you accidentally cut the jumpers other than J5 Jumpers are necessary for electronic circuit Improper operation may occur if you cut any of them 11 Printed Circuit Board Connector Wiring Diagram 51 041401 Outdoor Filter PCB 1 1 S11 Connector for main PCB 2 AC1 AC2 S Connector for terminal board 3 E1 E2 Terminal for earth wire 4 HL2 HN2 Connector for main PCB 5 HH1 Connector for reactor 6 FU1 Fuse 3 15 A 250 V 7 Fuse 20 A 250 V 8 V2 V3 Varistor HR1 511 WS E E R5 Od ps R FUL 204 ade E e 201 5 Esp ICT 5 15A 54 Phr 7 Nspes4 to S50 on main 3 254234 1 Forced Operation Button PCB 1 110 PCB3 Connector for main PCB 2 SW1 Forced cooling operation ON OFF button Refer to page 104 for detail 3P255755 1 Printed Circuit Board Connector Wiring Diagram 12 Outdoor Unit 2 2 50Class Main PCB PCB2 Sa 2 eS eS O 12 1512 gt 312 1 Caution 510 512 520 540 550 570 580 590 HL3 gt 570 579 unt SiBE041401E Connector for 511 on filter PCB Connector for HL
108. t quiet operation The rotation speed of the outdoor fan is reduced by the command 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 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 Detail 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 43 Function and Control 1 41401 Control Specification 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 The starting conditions are determined with the outdoor temperature and the outdoor heat exchanger temperature The system is in heating operation The compressor operates for 6 minutes B More 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 C Hz
109. tage 5 Replace the refrigerant R15833 95 Service Diagnosis SiBE041401E Check 5 7 Inverter Analyzer Check Check No 15 Service Diagnosis 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 Operation Method Step 1 Be sure to turn the power off Step 2 Install an inverter analyzer instead 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 15 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 ti
110. the power and turn it on again to start the system See if the same error occurs Monitor the power supply voltage Error again discharge and suction pressures and other factors for a long term YES Possible causes Momentary drop of power supply voltage Compressor overload Short circuit Check the connectors and other components Turn off the power and disconnect the harnesses U V and W Check No 15 Inverter analyzer Check with the inverter analyzer RSUK0917C Correct the power supply or replace the outdoor unit PCB NO Check No 22 Check the power module NO Replace the outdoor unit PCB Turn off the power and reconnect the harnesses Turn on the power again and start operation Check the power supply voltage NO Voltage as rated Correct the power supply YES Short circuit or NO wire breakage between compressor s phases Check the discharge pressure Go to Check No 18 YES Replace the compressor R19545 92 5 Check 51 Thermistor Resistance Check Check No 01 93 The data is for reference purpose only Thermistor temperature C Resistance 25 R25 C 20 3950 R11905 Multimeter Resistance range R19751 Multimeter m When the room temperature thermistor is soldered on a PCB remove the PCB from the control PCB
111. tions continue for 7 minutes Input current x input voltage lt A x output frequency Output frequency gt C A amp wsa BW o s 55 20 25 35 class 640 256 2000 256 Refrigerant shortage detection The following conditions continue for 80 seconds Opening of the electronic expansion valve gt D Discharge pipe temperature gt E x target discharge pipe temperature F pulse constant 20 26 85 class 128 128 128 128 cooling 60 heating 45 Refrigerant shortage detection 111 20 25 35 class only When the difference of the temperature is smaller than it is regarded as refrigerant shortage O ti 8 room thermistor temperature indoor heat exchanger temperature 4 0 p 9 4 0 outdoor heat exchanger temperature outdoor temperature indoor heat exchanger temperature room thermistor temperature 3 0 9 E NM outdoor temperature outdoor heat exchanger temperature B Ifthe error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error 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 Defective electronic expansion valve Service Diagnosis SiBE041401E Troubleshooting Ca
112. to measure the resistance SiBE041401E Disconnect the connectors of the thermistors from the PCB and measure the resistance of each thermistor using a multimeter Room temperature thermistor R19559 m When the connector of indoor heat exchanger thermistor is soldered on a PCB remove the thermistor and measure the resistance Service Diagnosis SiBE041401E 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 4 5 Check the motor control voltage pins 4 3 Check the rotation command voltage pins 4 2 Check the rotation pulse pins 4 1 5200 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 AO O O0 0000 R19942 5 3 Power Supply Waveforms Check Check No 11 Measure the power supply waveform between No 1 and No 2 on the terminal board and check the waveform disturbance B Check if the power supply waveform is a sine wave Fig 1 B Checkif there is waveform disturbance near the zero cross sections circled in Fig 2 Fig 1 Fig 2 VLL R1444 R1736 54 Electronic Expansion Valve Check Check No 12 Service Diagnosis Conduct the followings to check the electronic expansion valve EV 1 2 3 4 Check if the EV connector is correctl
113. tween POWERFUL and COMFORT AIRFLOW 20 Main Functions 51 041401 1 6 Program Dry Operation Outline 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 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 E or AFG Dr MONE Y 0 5 C zone B continues for 10 min Room thermistor temperature at start up X 0 5 C or Y 0 5 C zone B continues for 10 min X 0 5 C 17 5 C or Y 0 5 C zone B continues for 10 min Zone C Thermostat ON 7 0 5 Zone Thermostat OFF R11581 21 Function and Control 51 041401 Main Functions 1 7 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 u
114. uct 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 www daikin com rights reserved eSpecifications designs and other content appearing in this brochure are current as of March 2014 but subject to change without notice SiBEO41401E 03 2014 AK B
115. ution Check No 01 Refer to P 93 Check No 12 Refer to P 94 Service Diagnosis Any thermistor disconnected Stop valve closed NO Check for refrigerant shortage Oil oozing at relay pipe connections NO Oil oozing at internal piping NO Check No 12 Electronic expansion valve functioning YES Change for a specified amount of fresh refrigerant Refrigerant shortage error again YES Check No 01 Check the thermistors OK Replace the outdoor unit PCB Z YES Troubleshooting Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Replace the thermistor s in Discharge pipe thermistor position Indoor or outdoor heat exchanger thermistor Room temperature thermistor Outdoor temperature thermistor YES Open the stop valve YES Repair the pipe flare replace the union YES NO _ Check the pipes for improper contact and correct them as required Replace the cracked pipe Compressor vibrating too much YES Check the power transistor harness for loosening Correct it as required Also Mo replace the cracked pipe the electronic expansion valve NO Completed NG the defective thermistor s Completed Replace the compressor R19373 66 Troubleshooting SiBE041401E 4 8 Low
116. utput overcurrent detection p ____ Radiation fin thermistor related abnormality Displayed only when system down occurs N N N Oo O 4 c Service Diagnosis 58 Troubleshooting SiIBE041401E 4 2 Indoor Unit PCB Abnormality i Error Code Hi Method of Error The system checks if the circuit works properly within the microcomputer of the indoor unit Detection Error Decision The system cannot set the internal settings Conditions Supposed Wrong models interconnected Causes Defective indoor unit PCB Disconnection of connector Reduction of power supply voltage Troubleshooting 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 Match the compatible models secure the connection once disconnect the connector and then reconnect it YES Check the power supply voltage NO N Voltage as rated YES Start operation Y NO YES Check the power supply voltage NO Voltage as rated Y NO ES YES Check the connection of connectors See Note Correct the power supply Correct the connection Replace the indoor unit PCB Completed Error repeats Correct the power supply Start operation PCB the indoor unit NO Completed Completed R15310 d Note
117. ver 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 Control Parameters Inverter Principle Function and Control The frequency of the compressor is controlled by the following 2 parameters The load condition of the operating indoor unit B The difference between the room thermistor temperature and the target temperature The target frequency is adapted by additional parameters in the following cases Frequency restrictions Initial settings Forced cooling operation To regulate the capacity a frequency control is needed The inverter makes it possible to control the rotation speed of the compressor The following table explains the inverter principle The supplied AC power source is converted into the DC power source for the present The DC power source is reconverted into the three phase AC power source with variable frequency B 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 When the frequency decreases the rotation speed of the
118. voltage Detection or Over voltage Detection Error Code Method of Error Detection Error Decision Conditions Supposed Causes 67 gt gt i Indoor Unit The zero cross detection of the power supply is evaluated by the indoor unit PCB Outdoor Unit 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 Indoor Unit There is no zero cross detection in approximately 10 seconds Outdoor Unit Low voltage detection B The voltage detected by the DC voltage detection circuit is below 150 180 V depending on the model The compressor stops if the error occurs and restarts automatically after 3 minute standby Over voltage detection over voltage signal is fed from over voltage detection circuit to the microcomputer 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 Defective indoor unit PCB Service Diagnosis SiBE041401E Troubleshooting Service Diagnosis Troubleshooting
119. x allan Wee OUTDOOR DISCHARGE M1C Lei CONDENSER PCB1 PCB2 PCB3 PRINTEDCIRCUIT BOARD FORCED OPERATION SWITCH S10 511 20 40 50 V1 V2 V3 VARISTOR S70 S80 S90 S100 S110 TERMINAL STRIP X11A X12A CONNECTOR ELECTRONIC EXPANSION VALVE COIL RIT R2T THERMISTOR YiR REVERSING SOLENOID VALVE COIL SA1 SURGE ARRESTER Z1C Z2C Z8C FERRITE CORE PROTECTIVE EARTH 3D065704H 114 Wiring Diagrams SiIBE041401E RXG50L2V1B FIELD WIRING MRMTO D bu PY c Se pe gt le o ae PCB2 OOOOOOQOQOCOO m c E41 4 DCN FUZ iw LIE DL CI JJ IJ os i GN BLU KA z OUTDOOR Wm _ _ es Tl ca 1 REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS 2 di Ed es C7 C8 CAPACITOR x M M Qi Ms EI DB1 DB3 DIODE BRIDGE IN CASE OF V e FU1 202 FU3 FUSE zm ONLY OUTDOOR DISCHARGE ES FUA FIELD FUSE e WIS CONDENSER IPM INTELLIGENT POWER MODULE LIVE Q1DI EARTHLEAK DETECTOR 1 V2 V3 VARISTOR L803 L804 REACTOR PCB1 PCB2 PRINTED CIRCUIT BOARD X1M TERMINAL STRIP M1C COMPRESSOR MOTOR S10 S11 S12 S20
120. y connected to the PCB Turn the power off and on again and check if the EV generates a latching sound If the EV does not generate a latching sound in the above step 2 disconnect the connector and check the continuity using a multimeter Check the continuity between the pins 1 6 2 6 3 6 4 6 If there is no continuity between the pins the EV coil is faulty If the continuity is confirmed in step 3 the outdoor unit PCB is faulty Harness 5P 1 6 S 2 6 S20 6P Connector Check 3 6 4 6 123456 R16386 94 SiBE041401E 5 5 Four Way Valve Performance Check Check No 13 Turn the power off and then on again Four way valve coil Start heating operation Cooling Dry No continuity Heating Continuity S80 voltage at 220 240 VAC with compressor on Fig 1 NO the outdoor unit PCB YES Disconnect the four way valve coil from the connector and check the continuity Four way valve coil resistance at 1000 2000 NO Replace the four way valve coil YES Replace the four way valve R15737 Fig 1 Voltage at S80 220 240 VAC Time Compressor ON R11904 5 6 Inverter Unit Refrigerant System Check Check No 14 Refrigerant system check Is the discharge pipe thermistor disconnected from the holder Reconnect the thermistor Check for refrigerant leakage See the service diagnosis on refrigerant shor
121. y will be displayed 1 to 4 settings can be made per day 2 Press to select the desired day of the week and reservation number Pressing changes the reservation number and the day of the week Next 3 Press The day of the week and reservation number will be set OPE and ON blink A 4 Press to select the desired mode Pressing changes ON or OFF setting in sequence Pressing alternates the following items appearing on the LCD in rotational sequence JON p ONTIMER blank In case the reservation has already been set selecting blank deletes the reservation Go to step 9 if blank is selected u ac To return to the day of the week and reservation number setting pressC Next 5 Press The ON OFF TIMER mode will be set e and the time blink Function and Control 30 31 Main Functions 51 041401 6 Press s to select the desired time The time can be set between 0 00 and 23 50 in 10 minute intervals Back e To return to the ON OFF TIMER mode setting press Go to step 9 when setting the OFF TIMER Press The time will be set and the temperature blink A 8 Press to select the desired temperature v The temperature can be set between 10 C and 32 COOL or AUTO The unit operates at 18 C even if it is

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