Daikin RXYQ72 Serivce Manual Download

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Method of Replacing The Inverter’s Power Transistors and Diode Modules

SiUS39-601

242

Appendix

Method of Replacing The Inverter’s Power
Transistors and Diode Modules

8.1

Method of Replacing The Inverter’s Power Transistors and
Diode Modules

[Decision according to continuity check by analog tester]

Before checking, disconnect the electric wiring connected to the power transistor and diode
module.

Inverter PC board (A1P)

X10A

Electronic circuit

Inverter P.C.Board

IGBT

X11A

X10A

Fasten Tab

PC0208

X11A

P2 P1

(V2895)

Summary of Contents for RXYQ72

Page 1: ...SiUS39 601 RXYQ72 96 144 168 192MTJU R 410A Heat Pump 60Hz RXYQ72MTJU RXYQ96MTJU RXYQ144MTJU RXYQ168MTJU RXYQ192MTJU...

Page 2: ...art 3 Refrigerant Circuit 23 1 Refrigerant Circuit 24 1 1 RXYQ72M 96M 24 2 Functional Parts Layout 26 2 1 RXYQ72M 96M 26 3 Refrigerant Flow for Each Operation Mode 27 Part 4 Function 31 1 Operation Mo...

Page 3: ...m Outdoor Unit 81 Part 6 Troubleshooting 105 1 Troubleshooting by Remote Controller 108 1 1 The INSPECTION TEST Button 108 1 2 Self diagnosis by Wired Remote Controller 109 1 3 Self diagnosis by Wirel...

Page 4: ...changer Deicer 154 2 28 J7 Malfunction of Receiver Outlet Liquid Pipe Thermistor R6T 155 2 29 J8 Malfunction of Oil Equalizing Pipe Thermistor R7T 156 2 30 J9 Malfunction of Sub Cooling Gas Pipe Therm...

Page 5: ...Malfunction of Transmission Between Optional Controllers for Centralized Control 195 3 3 MA Improper Combination of Optional Controllers for Centralized Control 197 3 4 MC Address Duplication Improper...

Page 6: ...235 4 2 Option Lists Outdoor Unit 236 5 Example of Connection 237 6 Thermistor Resistance Temperature Characteristics 239 7 Pressure Sensor 241 8 Method of Replacing The Inverter s Power Transistors...

Page 7: ...plug socket before disassembling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shook If it is necessary to supply power to the equipme...

Page 8: ...e the welder in a well ventilated place Using the welder in an enclosed room can cause oxygen deficiency Warning Be sure to use parts listed in the service parts list of the applicable model and appro...

Page 9: ...cessively high pressure results causing equipment damage and injury If the refrigerant gas leaks be sure to locate the leak and repair it before charging the refrigerant After charging refrigerant mak...

Page 10: ...ion platform or frame can cause the unit to fall resulting in injury Check the grounding and repair it if the equipment is not properly grounded Improper grounding can cause an electrical shock Be sur...

Page 11: ...6 VRV series Heat Pump System Daikin offers a wide range of models to respond to building and office air conditioning needs We are confident that customers will be able to find the models that best su...

Page 12: ...SiUS39 601 General Information 1 Part 1 General Information 1 Model Names of Indoor Outdoor Units 2 2 External Appearance 3 2 1 Indoor Units 3 2 2 Outdoor Units 3 3 Model Selection 4...

Page 13: ...ed Cassette Type Multi Flow FXFQ 12M 18M 24M 30M 36M VJU Slim Ceiling Mounted Duct Type FXDQ 07M 09M 12M 18M 24M Ceiling Mounted Built In Type FXSQ 12M 18M 24M 30M 36M 48M Ceiling Mounted Duct Type FX...

Page 14: ...g mounted duct type FXDQ07MVJU FXDQ09MVJU FXDQ12MVJU FXDQ18MVJU FXDQ24MVJU Floor standing type FXLQ12MVJU FXLQ18MVJU FXLQ24MVJU Ceiling mounted built in type FXSQ12MVJU FXSQ18MVJU FXSQ24MVJU FXSQ30MVJ...

Page 15: ...96M Outdoor unit 2 RXYQ72M RXYQ96M RXYQ96M Total number of connectable indoor units 12 16 20 20 20 Total Capacity Index of Indoor Units to be Connected 50 5 93 5 67 5 124 5 101 187 118 218 134 5 249 5...

Page 16: ...SiUS39 601 Specifications 5 Part 2 Specifications 1 Specifications 6 1 1 Outdoor Units 6 1 2 Indoor Units 11...

Page 17: ...ston Displacement m3 h 13 72 10 47 Number of Revolutions r p m 6480 2900 Motor Output Number of Units kW 2 7 4 5 1 Starting Method Direct on line Fan Type Propeller Fan Motor Output kW 0 75 1 Air Flow...

Page 18: ...ston Displacement m3 h 13 72 10 47 Number of Revolutions r p m 6480 2900 Motor Output Number of Units kW 2 7 4 5 1 Starting Method Direct on line Fan Type Propeller Fan Motor Output kW 0 75 1 Air Flow...

Page 19: ...lacement m3 h 13 72 10 47 2 Number of Revolutions r p m 6480 2900 2 Motor Output Number of Units kW 2 7 4 5 2 Starting Method Direct on line Fan Type Propeller Fan Motor Output kW 0 75 2 Air Flow Rate...

Page 20: ...lacement m3 h 13 72 10 47 2 Number of Revolutions r p m 6480 2900 2 Motor Output Number of Units kW 2 7 4 5 2 Starting Method Direct on line Fan Type Propeller Fan Motor Output kW 0 75 2 Air Flow Rate...

Page 21: ...Type Piston Displacement m3 h 13 72 10 47 2 Number of Revolutions r p m 6480 2900 2 Motor Output Number of Units kW 2 7 4 5 2 Starting Method Direct on line Fan Type Propeller Fan Motor Output kW 0 7...

Page 22: ...for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Piping Connecti...

Page 23: ...Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Po...

Page 24: ...irect Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Th...

Page 25: ...del Type Sirocco Fan Sirocco Fan Motor Output HP 0 17 0 17 Air Flow Rate H L cfm 440 350 H L 580 460 H L External Static Pressure 4 Pa 44 15 44 15 Drive Direct Drive Direct Drive Temperature Control M...

Page 26: ...emperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulat...

Page 27: ...Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Materia...

Page 28: ...3 43 Fan Model D11 2D3AA1VE 2D11 2D3AG1VE 2D11 2D3AF1VE Type Sirocco Fan Sirocco Fan Sirocco Fan Motor Output HP 0 21 0 36 0 58 Air Flow Rate H L cfm 690 565 1 020 810 1 270 1 020 External Static Pres...

Page 29: ...70 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Co...

Page 30: ...180 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for...

Page 31: ...2 29 2 29 Fan Model QCL9686 QCL9686 Type Cross Flow Fan Cross Flow Fan Motor Output HP 0 058 0 058 Air Flow Rate H L cfm 500 400 635 470 Drive Direct Drive Direct Drive Temperature Control Microproces...

Page 32: ...ect Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and He...

Page 33: ...Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling an...

Page 34: ...SiUS39 601 Refrigerant Circuit 23 Part 3 Refrigerant Circuit 1 Refrigerant Circuit 24 1 1 RXYQ72M 96M 24 2 Functional Parts Layout 26 2 1 RXYQ72M 96M 26 3 Refrigerant Flow for Each Operation Mode 27...

Page 35: ...pressure sensor Used to detect high pressure O S1NPL Low pressure sensor Used to detect low pressure P S1PH HP pressure switch For INV compressor In order to prevent the increase of high pressure when...

Page 36: ...SiUS39 601 Refrigerant Circuit Refrigerant Circuit 25 RXYQ72M 96M 4D042651A J S U D F E I V N M G P Q B O H T K L A 9 6 8 7 2 1 4 3...

Page 37: ...Functional Parts Layout SiUS39 601 26 Refrigerant Circuit 2 Functional Parts Layout 2 1 RXYQ72M 96M Plan Front View...

Page 38: ...ON ON High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Indoor unit operation Heat exchanger Heat exchanger Heat exchanger Fan Fan Fan Filter Filte...

Page 39: ...igh temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Indoor unit operation Heat exchanger Heat exchanger Heat exchanger Fan Fan Fan Filter Filter Filter...

Page 40: ...ON ON High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Indoor unit operation Heat exchanger Heat exchanger Heat exchanger Fan Fan Fan Filter Filte...

Page 41: ...an Fan Indoor unit Filter Filter Indoor unit Filter Filter Indoor unit Filter Filter EXV 200 pls EXV 200 pls EXP Normal control High temperature high pressure gas High temperature high pressure liquid...

Page 42: ...y 45 3 6 Stopping Operation 46 3 7 Pressure Equalization prior to Startup 48 4 Protection Control 49 4 1 High Pressure Protection Control 49 4 2 Low Pressure Protection Control 50 4 3 Discharge Pipe P...

Page 43: ...on Compressor PI control Motorized valve PI control Protection control Indoor unit thermostat ON Defrost IN conditions are met No Yes Defrosting operation Cooling or heating operation Indoor unit ther...

Page 44: ...Receiver gas charging valve SVL OFF This valve turns on when outdoor temperature is low Receiver gas discharging valve SVG OFF Non operating unit gas discharging valve SVSG OFF Non operating unit liqu...

Page 45: ...ontrols compressor capacity to adjust Te to achieve target value TeS Te Low pressure equivalent saturation temperature F Te setting TeS Target Te value Varies depending on Te setting operating frequen...

Page 46: ...202Hz OFF 20 210Hz OFF 21 52Hz ON 22 74Hz ON 23 96Hz ON 24 116Hz ON 25 133Hz ON 26 158Hz ON 27 177Hz ON 28 202Hz ON 29 210Hz ON Compressors are operated in the order of descending priorities Compresso...

Page 47: ...27 177Hz 189Hz OFF OFF 28 202Hz 189Hz OFF OFF 29 210Hz 189Hz OFF OFF 30 52Hz 189Hz ON OFF 31 88Hz 189Hz ON OFF 32 124Hz 189Hz ON OFF 33 158Hz 189Hz ON OFF 34 189Hz 189Hz ON OFF 35 210Hz 189Hz ON OFF 3...

Page 48: ...6 81Hz OFF OFF OFF 7 88Hz OFF OFF OFF 8 96Hz OFF OFF OFF 9 104Hz OFF OFF OFF 10 110Hz OFF OFF OFF 11 116Hz OFF OFF OFF 12 124Hz OFF OFF OFF 13 133Hz OFF OFF OFF 14 143Hz OFF OFF OFF 15 158Hz OFF OFF...

Page 49: ...nding on the discharge pipe superheated degree of inverter compressor Subcooling Motorized Valve EV2 Control Makes PI control of the motorized valve Y2E to keep the superheated degree of the outlet ga...

Page 50: ...trol using outdoor unit fan STEP8 STEP7 STEP6 STEP5 STEP4 STEP3 STEP2 STEP1 STEP9 Pc 406 psi Pc 450 psi Pc HP pressure sensor detection value Pc 478 psi Pc 261 psi Pc 391 psi Pc 261 psi Pc 391 psi Pc...

Page 51: ...N Oil equalization valve SVO ON Receiver gas charging valve SVL OFF Receiver gas discharging valve SVG OFF Non operating unit gas discharging valve SVSG OFF Non operating unit liquid pipe stop valve S...

Page 52: ...rized valve EV2 SH control 0 pls 0 pls Hot gas bypass valve SVP OFF ON ON Oil equalization valve SVO ON ON ON Receiver gas charging valve SVL OFF OFF OFF Receiver gas discharging valve SVG OFF OFF OFF...

Page 53: ...N OFF ON Main motorized valve EV1 SH control 0 pls 180 pls Subcooling motorized valve EV2 0 pls 0 pls 0 pls Hot gas bypass valve SVP OFF ON ON Oil equalization valve SVO ON ON ON Receiver gas charging...

Page 54: ...Four way valve ON OFF ON Main motorized valve EV1 SH control 0 pls 200 pls Subcooling motorized valve EV2 0 pls 0 pls 0 pls Hot gas bypass valve SVP OFF ON ON Oil equalization valve SVO ON ON ON Rece...

Page 55: ...e SVL OFF Receiver gas discharging valve SVG ON Non operating unit gas discharging valve SVSG OFF Non operating unit liquid pipe stop valve SVSL ON Ending conditions 5 min Pe 72 5 psi Td 230 F or Actu...

Page 56: ...way valve Holds Main motorized valve EV1 0 pls Subcooling motorized valve EV2 0 pls Hot gas bypass valve SVP OFF Oil equalization valve SVO ON Receiver gas charging valve SVL OFF Receiver gas discharg...

Page 57: ...e Holds Main motorized valve EV1 0 pls Subcooling motorized valve EV2 0 pls Hot gas bypass valve SVP OFF Oil equalization valve SVO OFF Receiver gas charging valve SVL OFF Receiver gas discharging val...

Page 58: ...ischarging valve SVG OFF OFF Non operating unit liquid pipe stop valve SVSL OFF ON Mode transition conditions To Mode B when Tc Tl 0 27 Tc Ta 6 To Mode A when gas shortage signal is sent from indoor u...

Page 59: ...EP 4 Four way valve Holds Main motorized valve EV1 0 pls Subcooling motorized valve EV2 0 pls Hot gas bypass valve SVP OFF Oil equalization valve SVO OFF Receiver gas charging valve SVL OFF Receiver g...

Page 60: ...compressor standby for 5 mins Pc HP pressure sensor detection value for each outdoor unit When occurring 3 times within 30 min HPS is activated without high pressure standby thus outputting the malfun...

Page 61: ...Slave unit Stop Pe 36 psi Pe 58 psi Pe 10 psi Pe LP pressure sensor detection value for master unit When occurring 3 times within 30 min the malfunction code E4 is output Pe 23 psi Pe 19 psi Pe 36 ps...

Page 62: ...p protection control not limited Discharge pipe temp control standby INV upper limit frequency 1 step down from current compressor frequency INV upper limit frequency 1 step up from current compressor...

Page 63: ...upper limit frequency 1 step up from current compressor frequency Invertercurrent Ia Inverter current Ia continues for 3 min or more Inverter current Ib continues for 260 sec Inverter current Ic conti...

Page 64: ...e to overcurrent to the compressor resulting from failures of STD compressor such as locking STD compressor ON CT detection current value A for more than 3 sec STD compressor OFF for 30 min Demand to...

Page 65: ...of the starting control Example The following diagram shows outdoor unit rotation in combination of 3 outdoor units Master unit and slave unit in this section are the names for installation They are d...

Page 66: ...re 1 Press and hold the MODE button BS1 for 5 sec or more 2 Press the RETURN button BS3 once 3 Press the SET button BS2 one 4 Press the RETURN button BS3 twice 5 Press the MODE button BS1 once To inhi...

Page 67: ...scriminate the operating status of the master unit slave units through the following LED display To inhibit the master unit from operating Set setting mode 2 from No 38 to No 2 Procedure 1 Press and h...

Page 68: ...by external control adapter is required Demand 1 setting Demand 2 setting Other protection control functions have precedence over the above operation 5 4 Heating Operation Prohibition Heating operati...

Page 69: ...button 1 4 given in the figure below 6 1 1 When the Float Switch is Tripped While the Cooling Thermostat is ON 1 The objective of residual operation is to completely drain any moisture adhering to th...

Page 70: ...eset even after the 5 minutes operation 5 seconds stop 5 minutes operation cycle ends operation continues until the switch is reset 6 1 4 When the Float Switch is Tripped and AF is Displayed on the Re...

Page 71: ...t temperature Ex When cooling Assuming the preset temperature in the figure above is 75 F and the suction temperature has changed from 64 F to 86 F A F This example also assumes there are several othe...

Page 72: ...n be used so that suction temperature is higher than the preset temperature Ex When heating Assuming the preset temperature in the figure above is 75 F and the suction temperature has changed from 64...

Page 73: ...unit enters freeze prevention operation in accordance with the following conditions and is also set in accordance with the conditions given below Conditions for starting freeze prevention Temperature...

Page 74: ...st Operation 1 Test Operation 64 1 1 Procedure and Outline 64 1 2 Operation When Power is Turned On 67 2 Outdoor Unit PC Board Layout 68 3 Field Setting 69 3 1 Field Setting from Remote Controller 69...

Page 75: ...k Prior to Turn Power Supply on 1 1 2 Turn Power on Turn outdoor unit power on Carry out field setting on outdoor PC board Turn indoor unit power on V3056 Be sure to turn the power on 6 hours before s...

Page 76: ...Normal completion H2P and H3P ON Abnormal completion Check the indoor unit remote controller for abnormal display and correct it In the case of multi outdoor unit system make setting on the master un...

Page 77: ...d stop valve of outdoor unit E3 E4 F3 UF In case of RXYQ72M 96M Single outdoor installation Liquid side stop valve Open Gas side stop valve Open Oil equalizing pipe stop valve Close In case of RXYQ144...

Page 78: ...addition cannot be recognized In this case the unit cannot be run for up to 12 minutes to automatically set the address indoor outdoor address etc Status Outdoor unit Test lamp H2P Blinks Can also be...

Page 79: ...oor Outdoor Multi outdoor 2 Set mode display LED 3 Mode setting switch 1 Microcomputer normal monitor 4 Local setting switch Connection terminal for transmission use DS1 DS2 DS3 HAP V3054 1 Microcompu...

Page 80: ...ode push the button for 4 seconds or more and operation then enters the field set mode 2 Select the desired mode No with the button 3 During group control and you want to set by each individual indoor...

Page 81: ...e field set mode 2 Select the desired mode No with the button 3 Pushing the button select the first code No 4 Pushing the button select the second code No 5 Push the timer button and check the setting...

Page 82: ...the FIELD SET MODE 3 Select the mode No 00 with BS2 BUTTON temperature setting and BS3 BUTTON temperature setting 4 Select the group No with BS9 BUTTON set A and BS10 BUTTON set B Group Nos increase...

Page 83: ...alculation Set when filter sign is not to be displayed Display No display 12 22 0 Optional accessories output selection field selection of output for adaptor for wiring Indoor unit turned ON by thermo...

Page 84: ...uct type Ceiling Suspended type Wallmounted type Floor standing type Concealed Floor standing type Multi flow FXFQ FXSQ FXMQ FXHQ FXAQ FXLQ FXNQ Filter sign Ultra long life filter sign Remote controll...

Page 85: ...er failure reset or the main power supply turned on again return to the same operation condition as that of before power failure For the above reasons when the unit is set enabling to utilize Auto res...

Page 86: ...ts high performance filter etc is installed sets to change fan speed for securing air flow rate Follow the instruction manual for the optional parts to enter the setting numbers Mode No Setting Switch...

Page 87: ...on to inspect the group No display 4 Set the group No for each group with the button The group No increases in the manner of 1 00 1 01 1 15 2 00 4 15 However the unified ON OFF controller displays onl...

Page 88: ...er for centralized control 1 When in the normal mode push button for 4 seconds or more and operation then enters the field set mode 2 Set mode No 00 with button 3 Set the group No for each group with...

Page 89: ...about 1 minute on the liquid crystal display This is not an operative fault Centoral Remote Controller F1 F2 F1 F2 F1 F2 F1 F2 P1 P2 RC RC RC RC RC F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F...

Page 90: ...tion mode setting by remote controller can be set and displayed by operation modes 0 through 19 ON OFF control impossible by remote controller Used when you want to turn on off by central remote contr...

Page 91: ...l by remote controller Control mode Operation OFF Temperature control Operation mode setting Unified operation individual operation by central remote controller or operation controlled by timer Unifie...

Page 92: ...change the main P C Board A1P to spare parts P C B please carry out the following setting DIP Switch Detail If the DS1 4 DS2 1 setting refrigerant classification has not been carried out error code UA...

Page 93: ...RETURN BS4 TEST BS5 RESET V2760 Setting mode 1 Monitor mode H1P Push the BS1 MODE button one time Blinking MODE MODE Off H1P Setting mode 2 MODE On H1P Push and hold the BS1 MODE button for 5 seconds...

Page 94: ...7 7 7 7 During low noise operation 7 7 8 7 7 8 7 H3P to H5P LED display changes depending on setting No 2 3 4 Normal 7 7 8 7 7 7 7 During demand operation 7 7 8 7 7 7 8 H3P to H5P LED display changes...

Page 95: ...matic nighttime low noise operation in a simple way The operating time is based on Starting set and Ending set 25 Low noise setting Sets low noise level when the low noise signal is input from outside...

Page 96: ...ng 8 7 7 8 7 8 7 Quick defrost 8777877 Normal factory setting 8777787 Slow defrost 8777778 11 Sequential operation setting 8 7 7 8 7 8 8 OFF 8777778 ON 8777787 12 External low noise demand setting 8 7...

Page 97: ...4 step or lower 8777877 26 Night time low noise operation start setting 8 7 8 8 7 8 7 About 20 00 8777778 About 22 00 factory setting 8777787 About 24 00 8777877 27 Night time low noise operation end...

Page 98: ...8 Lower 4 digits lower 14 Contents of malfunction the latest 8 7 7 8 8 8 7 Malfunction code table Refer page 118 119 15 Contents of malfunction 1 cycle before 8 7 7 8 8 8 8 16 Contents of malfunction...

Page 99: ...which translates to 16 4 2 22 base 10 number In other words the address is 22 The number of terminal blocks for No 12 and 13 is expressed as an 8 digit binary number which is the combination of four...

Page 100: ...controllers After the check operation CHANGEOVER UNDER CONTROL is flashing in all connected remote controllers Select an indoor unit to be used as the master unit in accordance with the request from...

Page 101: ...Separately for Each Outdoor Unit System by Cool Heat Selector It does not matter whether or not there is outdoor outdoor unit wiring Set outdoor unit PC board DS1 1 to OUT factory set Set cool heat s...

Page 102: ...utdoor unit on either the outdoor outdoor indoor outdoor or transmission line Set outdoor unit PC board DS1 1 to Indoor factory set In setting mode 1 set the outdoor unit you want to give cool heat se...

Page 103: ...the external control adapter for outdoor unit on either the outdoor outdoor indoor outdoor or transmission line Set group master outdoor unit PC board DS1 1 to Outdoor factory set In setting mode 1 s...

Page 104: ...matches the unified cool heat address of outdoor unit PC board Address setting for e and f Set lower 5 digits with binary number No 0 to No 31 Address No Outdoor unit PCB LED Set with setting mode 2...

Page 105: ...e low noise instructions are neglected to switch to normal operation Set by Setting Mode 2 B When the low noise operation is carried out automatically at night The external control adapter for outdoor...

Page 106: ...SiUS39 601 Field Setting Test Operation 95 Image of operation in the case of A Image of operation in the case of B Image of operation in the case of A and B...

Page 107: ...ng switch on the outdoor unit PCB to the External low noise Demand YES Set by Setting Mode 2 2 Set the Demand 1 level setting on the outdoor unit PCB as the need arises During the demand level 1 instr...

Page 108: ...mand 1 level setting Demand level 2 instructing Demand level 3 instructing The power consumption during the demand level 1 instructing can be set with the Demand 1 level setting 70 of rated power cons...

Page 109: ...H1P on c In setting 1 push and hold the BS1 MODE button for more than 5 seconds Setting mode 2 is entered and H1P lights d Push the BS2 SET button several times and match the LED display with the Sett...

Page 110: ...Mode 2 Factory setting z z z z 9 z Mode 3 z z z 9 z z 26 Night time low noise start setting z z z PM 8 00 z z z z z 9 PM 10 00 Factory setting z z z z 9 z PM 0 00 z z z 9 z z 27 Night time low noise...

Page 111: ...ant charge total flow Confirm LIQ SUCTION and Oil equalizing Stop valve closed Is all refrigerant charged Is all refrigerant charged YES YES NO NO Turn off the power Charge through Service port of LIQ...

Page 112: ...rging operation again to start charging When the charging immediately stops even by restarting the refrigerant is charged excessively The refrigerant cannot be charged any more g Do not fail to fully...

Page 113: ...de 2 3 2 7 Check Operation To prevent any trouble in the period of installation at site the system is provided with a test operation mode enabling check for incorrect wiring stop valve left in closed...

Page 114: ...ly during inverter operation The waveform can be checked by disconnecting the wiring of compressor After the completion of checks return the system to the previous mode and wait for 30 seconds or more...

Page 115: ...Field Setting SiUS39 601 104 Test Operation...

Page 116: ...oor Unit Malfunction of Thermistor R2T for Heat Exchanger 131 2 10 C5 Indoor Unit Malfunction of Thermistor R3T for Gas Pipes 132 2 11 C9 Indoor Unit Malfunction of Thermistor R1T for Suction Air 133...

Page 117: ...r Unit Reverse Phase Open Phase 174 2 43 U2 Outdoor Unit Power Supply Insufficient or Instantaneous Failure 175 2 44 U3 Outdoor Unit Check Operation not executed 177 2 45 U4 Malfunction of Transmissio...

Page 118: ...mission Between Optional Controllers for Centralized Control 203 4 4 MA Improper Combination of Optional Controllers for Centralized Control 205 4 5 MC Address Duplication Improper Setting 207 5 Troub...

Page 119: ...ion button for more than 4 seconds Press Inspection Test Operation button once Press Inspection Test Operation button once Or after 30 minutes After 10 seconds Press Inspection Test Operation button o...

Page 120: ...malfunction the remote controller s operation LED blinks and malfunction code is displayed Even if stop operation is carried out malfunction contents are displayed when the inspection mode is entered...

Page 121: ...the following operations 1 short beep Conduct steps 3 and 4 Continue the operation in step 4 until a buzzer remains ON The continuous buzzer indicates that the malfunction code is confirmed Continuou...

Page 122: ...SiUS39 601 Troubleshooting by Remote Controller Troubleshooting 111 The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed...

Page 123: ...ling mounted duct Display A F H J L P L 6 3 Indoor unit type code Type VRV VRV Heat Recovery Display A A A A 9 6 Outdoor model code Model RXYQ M REYQ M Unit Malfunction code Inspection Normal display...

Page 124: ...r group control only Select the indoor unit No to be set with the time mode For wireless remote controller button 3 Make the settings required for each mode Modes 41 44 45 In case of Mode 44 45 push b...

Page 125: ...ou want to search for the unit No By selecting the unit No with the button you can turn the fan of each indoor unit on forced ON individually 44 Individual setting Set the fan speed and air flow direc...

Page 126: ...If a malfunction occurs during operation the operation lamp malfunction code and display of malfunctioning unit No let you know the contents and location of the malfunction When there is a stop due to...

Page 127: ...outdoor unit fan motor 142 E9 9 9 9 Malfunction of moving part of electronic expansion valve Y1E 3E 144 F3 9 9 9 Abnormal discharge pipe temperature 146 F6 9 9 9 Refrigerant overcharged 147 H3 8 7 9 M...

Page 128: ...ion between indoor unit and outdoor unit in the same system 184 UA 9 9 9 Excessive number of indoor units etc 186 UC 8 8 8 Address duplication of central remote controller 188 UE 9 9 9 Malfunction of...

Page 129: ...own system Abnormal connection with excessive number of indoor units Conflict of refrigerant type in indoor units Incorrect wiring Auto address error Malfunction of multi level converter abnormality i...

Page 130: ...lfunction code Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P Malfunction...

Page 131: ...als with the remote controller set to external ON OFF terminal Supposed Causes Actuation of external protection device Improper field set Defect of indoor unit PC board Troubleshooting V2776 Caution B...

Page 132: ...be correctly received from the E PROM E PROM Type of nonvolatile memory Maintains memory contents even when the power supply is turned off Supposed Causes Defect of indoor unit PC board Troubleshooti...

Page 133: ...FXSQ FXMQ FXHQ FXAQ Method of Malfunction Detection By float switch OFF detection Malfunction Decision Conditions When rise of water level is not a condition and the float switch goes OFF Supposed Ca...

Page 134: ...ndoor unit PC board Loose connection of connector NO NO NO YES YES NO NO YES NO YES NO NO The float switch is connected to X8A of the indoor unit PC board NO The drain pump works when the power supply...

Page 135: ...hen output voltage to the fan is maximum Supposed Causes Fan motor lock Disconnected or faulty wiring between fan motor and PC board Troubleshooting Caution Be sure to turn off power switch before con...

Page 136: ...on Utilizes ON OFF of the limit switch when the motor turns Malfunction Decision Conditions When ON OFF of the microswitch for positioning cannot be reversed even though the swing flap motor is energi...

Page 137: ...again Replace indoor unit PC board NO NO YES NO YES NO YES YES NO Indoor unit is a model equipped with a swing flap function The swing motor works when the power supply is turned off and then back on...

Page 138: ...g part of electronic expansion valve Defect of indoor unit PC board Defect of connecting cable Troubleshooting V2781 Caution Be sure to turn off power switch before connect or disconnect connector or...

Page 139: ...n valve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins Normal Continuity Approx 300 Continuity Approx 150 No continuity Pin No 1 White...

Page 140: ...the float switch changes from ON to OFF while the compressor is in non operation Supposed Causes Humidifier unit optional accessory leaking Defect of drain pipe upward slope etc Defect of indoor unit...

Page 141: ...en the capacity code is not contained in the PC board s memory and the capacity setting adaptor is not connected 2 When a capacity that doesn t exist for that unit is set Supposed Causes You have forg...

Page 142: ...cted or shorted while the unit is running Supposed Causes Defect of thermistor R2T for liquid pipe Defect of indoor unit PC board Troubleshooting 1 Refer to thermistor resistance temperature character...

Page 143: ...ted while the unit is running Supposed Causes Defect of indoor unit thermistor R3T for gas pipe Defect of indoor unit PC board Troubleshooting 1 Refer to thermistor resistance temperature characterist...

Page 144: ...nnected or shorted while the unit is running Supposed Causes Defect of indoor unit thermistor R1T for air inlet Defect of indoor unit PC board Troubleshooting 1 Refer to thermistor resistance temperat...

Page 145: ...omes disconnected or shorted while the unit is running Supposed Causes Defect of remote controller thermistor Defect of remote controller PC board Troubleshooting Note In case of remote controller the...

Page 146: ...correctly received from the E PROM E PROM Type of nonvolatile memory Maintains memory contents even when the power supply is turned off Supposed Causes Defect of outdoor unit PC board A1P Troubleshoot...

Page 147: ...ous power failure Faulty high pressure sensor Troubleshooting 1 Actuation of high pressure switch HPS The outdoor unit PC board s connector is disconnected Is the outdoor unit heat exchanger dirty Def...

Page 148: ...an 21psi Defect of low pressure sensor Defect of outdoor unit PC board Stop valve is not opened Troubleshooting V2791 Caution Be sure to turn off power switch before connect or disconnect connector or...

Page 149: ...Troubleshooting by Indication on the Remote Controller SiUS39 601 138 Troubleshooting 1 Voltage measurement point 1 Refer to pressure sensor pressure voltage characteristics table on P241...

Page 150: ...ted between the inverter and compressor and detects the position signal pattern Malfunction Decision Conditions The position signal with 3 times cycle as imposed frequency is detected when compressor...

Page 151: ...ES Check and see whether compressor is short circuited or ground YES YES Are inverter output voltages the same for 3 phases Does low or high pressure vary even instantaneously when restarting compress...

Page 152: ...roper power voltage Faulty magnetic switch Faulty compressor Faulty current sensor A5P Troubleshooting Is the stop valve open NO Obstacle exists around the air discharge port YES Is the power supply v...

Page 153: ...e system shuts down Supposed Causes Malfunction of fan motor The harness connector between fan motor and PC board is left in disconnected or faulty connector Fan does not run due to foreign matters ta...

Page 154: ...Power supply cable YES Is the LED HAP on fan inverter PCB blinking NO Check No 9 Check on connector of fan motor Signal wire YES Are the resistance values between phases of U V W balanced Is there an...

Page 155: ...d A1P Defect of connecting cable Troubleshooting V3067 YES Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Return to normal Turn power s...

Page 156: ...n valve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins Normal Continuity Approx 300 Continuity Approx 150 No continuity Pin No 1 White...

Page 157: ...pipe temperature rises suddenly Supposed Causes Faulty discharge pipe temperature sensor Faulty connection of discharge pipe temperature sensor Faulty outdoor unit PC board Troubleshooting 1 Refer to...

Page 158: ...eceiver gas pipe temperature is lower than evaporating temperature during test operation Supposed Causes Refrigerant overcharge Disconnection of the receiver gas pipe thermistor Troubleshooting V2797...

Page 159: ...odels RXYQ72M 96M Method of Malfunction Detection Detection of abnormal signal from fan motor Malfunction Decision Conditions In case of detection of abnormal signal at starting fan motor Supposed Cau...

Page 160: ...dication on the Remote Controller Troubleshooting 149 1 Disconnect connector X2A and measure the following resistance X2A GND V2799 Measure the resistance between Vcc UVW and GND UVW 5 Gray Vcc W V U...

Page 161: ...ct of thermistor R1T for outdoor air Defect of outdoor unit PC board A1P Troubleshooting The alarm indicator is displayed when the fan only is being used also 1 Refer to thermistor resistance temperat...

Page 162: ...becomes 5A or lower or 40A or more during standard compressor operation Supposed Causes Faulty current sensor Faulty outdoor unit PC board Troubleshooting V3071 Caution Be sure to turn off power switc...

Page 163: ...Causes Defect of thermistor R31T R32T for outdoor unit discharge pipe Defect of outdoor unit PC board A1P Troubleshooting The alarm indicator is displayed when the fan is being used also 1 Refer to th...

Page 164: ...rature thermistor is detected Supposed Causes Defect of thermistor R2T for outdoor unit suction pipe Defect of outdoor unit PC board A1P Troubleshooting 1 Refer to thermistor resistance temperature ch...

Page 165: ...at exchange thermistor is detected Supposed Causes Defect of thermistor R4T for outdoor unit coil Defect of outdoor unit PC board A1P Troubleshooting 1 Refer to thermistor resistance temperature chara...

Page 166: ...or open Supposed Causes Faulty receiver outlet liquid pipe thermistor R6T Faulty outdoor unit PC board Troubleshooting 1 Refer to thermistor resistance temperature characteristics table on P239 V3075...

Page 167: ...open Supposed Causes Faulty oil equalizing pipe thermistor R7T Faulty outdoor unit PC board Troubleshooting 1 Refer to thermistor resistance temperature characteristics table on P239 V3075 Be sure to...

Page 168: ...open Supposed Causes Faulty Sub Cooling gas pipe thermistor R5T Faulty outdoor unit PC board Troubleshooting 1 Refer to thermistor resistance temperature characteristics table on P239 V3075 Caution B...

Page 169: ...osed Causes Defect of high pressure sensor system Connection of low pressure sensor with wrong connection Defect of outdoor unit PC board Troubleshooting V2806 Caution Be sure to turn off power switch...

Page 170: ...SiUS39 601 Troubleshooting by Indication on the Remote Controller Troubleshooting 159 1 Voltage measurement point 2 Refer to pressure sensor pressure voltage characteristics table on P241...

Page 171: ...f high pressure sensor with wrong connection Defect of outdoor unit PC board Troubleshooting 1 Voltage measurement point 2 Refer to pressure sensor pressure voltage characteristics table on P241 V2808...

Page 172: ...Actuation of fin thermal Actuates above 192 F Defect of inverter PC board Defect of fin thermistor Troubleshooting 1 Refer to thermistor resistance temperature characteristics table on P239 V2811 Resi...

Page 173: ...pection Higher voltage than actual is displayed when the inverter output voltage is checked by tester V2812 Caution Be sure to turn off power switch before connect or disconnect connector or parts dam...

Page 174: ...al Remote Controller Display L8 Applicable Models RXYQ72M 96M Method of Malfunction Detection Malfunction is detected by current flowing in the power transistor Malfunction Decision Conditions When ov...

Page 175: ...on of the compressor and refrigerant system is required Compressor inspection Inspect according to the diagnosis procedure for odd noises vibration and operating status of the compressor NO Replace th...

Page 176: ...r switch before connect or disconnect connector or parts damage may be occurred Inverter output voltage check Inverter output voltage is not balanced Normal if within 5V Must be measured when frequenc...

Page 177: ...function Detection Check the communication state between inverter PC board and control PC board by micro computer Malfunction Decision Conditions When the correct communication is not conducted in cer...

Page 178: ...The microcomputer monitor green on the inverter P C B is blinking The voltage between 2 pins of X1A on the inverter unit is 208 230 V YES Defect of outdoor main PC board or defect of inverter PC board...

Page 179: ...voltage is detected in PC board Malfunction Decision Conditions When the resistance value of thermistor becomes a value equivalent to open or short circuited status Malfunction is not decided while t...

Page 180: ...voltage record power supply voltage between 3 phases L1 L2 L2 L3 L3 L1 for about one continuous week Open phase Normalize field cause Power supply voltage imbalance Explanation for users Fix power su...

Page 181: ...s Malfunction is not decided while the unit operation is continued P4 will be displayed by pressing the inspection button Supposed Causes Defect of radiator fin temperature sensor Defect of inverter P...

Page 182: ...the field setting or the type of the PC board is correct through the communication date is judged Supposed Causes Faulty or no field setting after replacing main PC board Mismatching of type of PC bo...

Page 183: ...6M Method of Malfunction Detection Short of gas malfunction is detected by discharge pipe temperature thermistor Malfunction Decision Conditions Microcomputer judge and detect if the system is short o...

Page 184: ...outdoor unit PC board 1 Out of gas or refrigerant system is clogged Requires check of refrigerant system Replace the thermistor Replace the outdoor unit PC board A1P YES NO NO Out of gas closing of st...

Page 185: ...onditions When a significant phase difference is made between phases Supposed Causes Power supply reverse phase Power supply open phase Defect of outdoor PC board A1P Troubleshooting V2820 Operation i...

Page 186: ...YQ72M 96M Method of Malfunction Detection Detection of voltage of main circuit capacitor built in the inverter and power supply voltage Malfunction Decision Conditions When the capacitor above only ha...

Page 187: ...rd YES NO NO Does the voltage between terminals P and N gradually rise to 283 VDC TJU after turning on Monitor field power supply Replace the inverter PC board The voltage between the P and N terminal...

Page 188: ...on Conditions Malfunction is decided when the unit starts operation without check operation Supposed Causes Check operation is not executed Troubleshooting V3052 Has the check operation performed on O...

Page 189: ...alfunction Detection Microcomputer checks if transmission between indoor and outdoor units is normal Malfunction Decision Conditions When transmission is not carried out normally for a certain amount...

Page 190: ...r or outdoor outdoor unit transmission wiring YES NO NO YES Has the indoor or outdoor unit PC board been replaced or has the indoor outdoor or outdoor outdoor unit transmission wiring been modified Al...

Page 191: ...indoor unit PC board Defect of remote controller PC board Malfunction of transmission caused by noise Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or...

Page 192: ...r units Malfunction Decision Conditions When transmission is not carried out normally for a certain amount of time Supposed Causes Improper connection of transmission wiring between outdoor unit and e...

Page 193: ...ELECT to IND YES Fix the outdoor units multi connection transmission wiring and reset power NO Is the outdoor units multi connection transmission wiring normal Is the indoor outdoor unit transmission...

Page 194: ...t continue for specified period Supposed Causes Malfunction of transmission between main and sub remote controller Connection between sub remote controllers Defect of remote controller PC board Troubl...

Page 195: ...tection Detect the malfunction signal of any other indoor unit within the system concerned Malfunction Decision Conditions When the malfunction decision is made on any other indoor unit within the sys...

Page 196: ...utes or more NO YES Refer to failure diagnosis for U4 malfunction code NO YES U9 has been displayed for 2 minutes or more NO Turn on all indoor units Refer to failure diagnosis for A1 malfunction code...

Page 197: ...A difference occurs in data by the type of refrigerant between indoor and outdoor units The number of indoor units is outside of the allowable range Malfunction Decision Conditions The malfunction de...

Page 198: ...oor units connected to the same refrigerant system is within connectable number of unit Normal NO NO There are too many indoor units within the same refrigerant system Push and hold the RESET button o...

Page 199: ...n Conditions The malfunction decision is made as soon as the abnormality aforementioned is detected Supposed Causes Address duplication of centralized remote controller Defect of indoor unit PC board...

Page 200: ...f Malfunction Detection Microcomputer checks if transmission between indoor unit and centralized controller is normal Malfunction Decision Conditions When transmission is not carried out normally for...

Page 201: ...incorrectly Is the master controller s connector for setting master controller disconnected Set the group No correctly Replace indoor unit PC board Fix the wiring correctly Fix the wiring correctly C...

Page 202: ...ck operation Defect of indoor unit PC board Stop valve is left in closed Troubleshooting Note Wiring check operation may not be successful if carried out after the outdoor unit has been off for more t...

Page 203: ...s Undefined Remote Controller Display UH Applicable Models All models of indoor units RXYQ72M 96M Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Improper connection of...

Page 204: ...irst time after installation or after an indoor or outdoor unit PC board has been replaced Is indoor outdoor and outdoor outdoor unit transmission wiring normal YES Normal NO Does a malfunction occur...

Page 205: ...ntroller Display M1 Applicable Models Central remote controller Method of Malfunction Detection Detect an abnormality in the DIII NET polarity circuit Malfunction Decision Conditions When polarity and...

Page 206: ...t the malfunction according to DIII NET transmission data The system will be automatically reset Malfunction Decision Conditions When no master controller is present at the time of the startup of slav...

Page 207: ...for centralized control and replace the one that is unable to control the indoor unit NO NO Fix the wiring correctly YES YES Has a once connected optional controller for centralized control been disc...

Page 208: ...t the malfunction according to DIII NET transmission data Malfunction Decision Conditions When the schedule timer is set to individual use mode other central component is present When multiple master...

Page 209: ...o that the connector for setting master controller is connected to one controller for centralized control and reset the power supply for all optional controllers for centralized control simultaneously...

Page 210: ...ster controller mode or slave controller mode Supposed Causes Address duplication of centralized controller Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connec...

Page 211: ...unction Detection Microcomputer checks if transmission between indoor unit and centralized controller is normal Malfunction Decision Conditions When transmission is not carried out normally for a cert...

Page 212: ...d incorrectly Is the master controller s connector for setting master controller disconnected Set the group No correctly Replace indoor unit PC board Fix the wiring correctly Fix the wiring correctly...

Page 213: ...y circuit Malfunction Decision Conditions When polarity and polarity are detected at the same time Supposed Causes Defect of schedule timer PC board Troubleshooting Caution Be sure to turn off power s...

Page 214: ...malfunction according to DIII NET transmission data The system will be automatically reset Malfunction Decision Conditions When no master controller at the time of the startup of slave controller Whe...

Page 215: ...entralized control and replace the one that is unable to control the indoor unit NO NO Fix the wiring correctly YES YES Has a once connected optional controller for centralized control been disconnect...

Page 216: ...ction Detect the malfunction according to DIII NET transmission data Malfunction Decision Conditions When the schedule timer is set to individual use mode other central component is present When multi...

Page 217: ...or setting master controller when the malfunction is cleared is defective and must be replaced Reset the power supply for all optional controllers for centralized control simultaneously YES NO Is the...

Page 218: ...sion data Malfunction Decision Conditions When two or more schedule timers are connected Supposed Causes Address duplication of schedule timer Troubleshooting Caution Be sure to turn off power switch...

Page 219: ...models of indoor units Unified ON OFF controller Method of Malfunction Detection Detect the malfunction according to DIII NET transmission data Malfunction Decision Conditions Supposed Causes Malfunc...

Page 220: ...ter controller disconnected Set the group No correctly Replace indoor unit PC board Fix the wiring correctly Fix the wiring correctly Connect the connector correctly Replace the central PC board Reset...

Page 221: ...he centralized controller which was connected once shows no response The control ranges are overlapped When multiple master central controller are present When the schedule timer is set to individual...

Page 222: ...r schedule timer NO YES YES NO NO Fix the wiring correctly Set reset switch to normal NO NO YES YES YES Is the power supply turned on for all optional controllers for centralized control Reset power s...

Page 223: ...roller for centralized control and reset the power supply for all optional controllers for centralized control simultaneously Disconnect the connector for setting master controller from the master con...

Page 224: ...is not set for indoor unit Improper control range setting switch Improper wiring of transmission wiring Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector...

Page 225: ...elay connector is disconnected Check No 9 Check on connector of fan motor Signal wire 1 Turn off the power supply 2 Measure the resistance between Vcc and each phase of U V W and GND and each phase at...

Page 226: ...the service mode setting enables not to judge the position detection signal malfunction but to output waveform only during inverter operation The waveform can be checked by disconnecting the wiring o...

Page 227: ...Troubleshooting OP Unified ON OFF Controller SiUS39 601 216 Troubleshooting...

Page 228: ...US39 601 Replacement Procedure for INV Compressor VRV 217 Part 7 Replacement Procedure for INV Compressor VRV 1 Replacement Procedure for INV Compressor VRV RXYQ72M 96M 218 1 1 Replacement Procedure 2...

Page 229: ...8 Remove the rubber caps put on the suction and discharge pipe of the new compressor to release the sealing nitrogen gas Take note that oil may spout due to the pipe inside pressure if the plug put o...

Page 230: ...cal and Functional Parts 230 3 1 Outdoor Unit 230 3 2 Indoor Side 231 4 Option List 235 4 1 Option List of Controllers 235 4 2 Option Lists Outdoor Unit 236 5 Example of Connection 237 6 Thermistor Re...

Page 231: ...Piping Diagrams SiUS39 601 220 Appendix 1 Piping Diagrams 1 1 Outdoor Unit RXYQ72M 96M...

Page 232: ...24MVJU FXLQ 12M 18M 24MVJU FXNQ 12M 18M 24MVJU R1T Thermistor for suction air temperature R2T Thermistor for liquid line temperature R3T Thermistor for gas line temperature J DU220 602J Heat exchanger...

Page 233: ...Piping Diagrams SiUS39 601 222 Appendix FXDQ Refrigerant pipe connection port diameters 4D043864J Model Gas Liquid FXDQ07M 09M 12M 18MVJU 1 2 1 4 FXDQ24MVJU 5 8 3 8...

Page 234: ...SiUS39 601 Wiring Diagrams for Reference Appendix 223 2 Wiring Diagrams for Reference 2 1 Outdoor Unit RXYQ72 96MTJU 3D043287C...

Page 235: ...Wiring Diagrams for Reference SiUS39 601 224 Appendix 2 2 Field Wiring RXYQ72 96MTJU C 3D042647B...

Page 236: ...SiUS39 601 Wiring Diagrams for Reference Appendix 225 RXYQ144 168 192MTJU C 3D050353A...

Page 237: ...Wiring Diagrams for Reference SiUS39 601 226 Appendix 2 3 Indoor Unit FXFQ12M 18M 24M 30M 36MVJU FXDQ07M 09M 12M 18M 24MVJU 3D042620B 3D050501A...

Page 238: ...SiUS39 601 Wiring Diagrams for Reference Appendix 227 FXSQ12M 18M 24M 30M 36M 48MVJU FXMQ30M 36M 48MVJU 3D043177A 3D043176A...

Page 239: ...Wiring Diagrams for Reference SiUS39 601 228 Appendix FXAQ07M 09M 12M 18M 24MVJU FXHQ12M 24M 36M 3D046039C 3D048116...

Page 240: ...SiUS39 601 Wiring Diagrams for Reference Appendix 229 FXLQ12M 18M 24MVJU FXNQ12M 18M 24MVJU 3D045644A...

Page 241: ...Solenoid valve Receiver gas discharge Y4S VPV 603D Solenoid valve Non operating unit gas discharge Y5S TEV1620DQ2 Solenoid valve Non operating unit liquid pipe close Y6S VPV 803DQ50 4 way valve Y7S V...

Page 242: ...istor for Heat Exchanger High Temp R3T ST8605 3 8 L630 20k 77 F Thermistor Heat Exchanger R2T ST8602A 3 6 L630 20k 77 F Others Float Switch S1L FS 0211 Fuse F1U 250V 5A 5 2 Transformer T1R TR25H25R0 P...

Page 243: ...605 7 8 L1600 20k 77 F Thermistor Heat Exchanger R2T ST8602A 7 6 L1600 20k 77 F Others Float Switch S1L FS 0211 Fuse F1U 250V 5A 5 2 Transformer T1R TR25H25R0 Parts Name Symbol Model Remark FXMQ 30MVJ...

Page 244: ...Remote Controller BRC1C71 Option Wireless Remote Controller BRC7E818 Option Motors Fan Motor M1F 1 40W 1 43W Thermal protector 266 F OFF 176 F ON Swing Motor M1S MP24 3SB40333 1 AC200 240V MSFBC20C21...

Page 245: ...Remote Controller Motors Fan Motor M1F 1 25W 1 35W Thermal protector 275 F OFF 248 F ON Capacitor for Fan Motor C1R 0 5 F 450V 1 5 F 450V 2 0 F 450V Thermistors Thermistor Suction Air R1T ST8601 6 4 L...

Page 246: ...t Touch Controller basic Hardware intelligent Touch Controller DCS601C71 Air Conditioning management system that can be controlled by a compact all in one unit Option Software Web DCS004A71 Monitors a...

Page 247: ...tional accessories Cool Heat Selector KRC19 26A Cool Heat Selector Fixing box Model KJB111A Distributive piping REFNET header Model KHRP26M22H KHRP26M33H Max 4 branch Max 8 branch KHRP26M22H KHRP26M33...

Page 248: ...eed the refrigerant piping size chosen by general system model name How to calculate the additional refrigerant to be charged If a negative result is gotten for R from the formula at right no refriger...

Page 249: ...Example of Connection SiUS39 601 238 Appendix...

Page 250: ...132 8 56 6 18 44 6 7 46 26 134 6 57 5 95 46 4 8 44 05 136 4 58 5 74 48 2 9 41 95 138 2 59 5 14 50 0 10 39 96 140 0 60 4 96 51 8 11 38 08 141 8 61 4 79 53 6 12 36 30 143 6 62 4 62 55 4 13 34 62 145 4...

Page 251: ...33 92 249 8 121 7 26 71 6 22 228 05 161 6 72 32 78 251 6 122 7 06 73 4 23 218 24 163 4 73 31 69 253 4 123 6 87 75 2 24 208 90 165 2 74 30 63 255 2 124 6 69 77 0 25 200 00 167 0 75 29 61 257 0 125 6 5...

Page 252: ...PH Detected Pressure High Side PL Detected Pressure Low Side VH Output Voltage High Side VDC VL Output Voltage Low Side VDC PH 1 38V 0 69 PL 0 57V 0 28 PH High pressure VL Low pressure V Voltage V Ou...

Page 253: ...lacing The Inverter s Power Transistors and Diode Modules Decision according to continuity check by analog tester Before checking disconnect the electric wiring connected to the power transistor and d...

Page 254: ...verter PC Board Decision If other than given above the power unit is defective and must be replaced Note If using a digital tester and continuity may be reversed Diode Module Decision If other than gi...

Page 255: ...Method of Replacing The Inverter s Power Transistors and Diode Modules SiUS39 601 244 Appendix...

Page 256: ...SiUS39 601 Precautions for New Refrigerant R 410A 245 Part 9 Precautions for New Refrigerant R 410A 1 Precautions for New Refrigerant R 410A 246 1 1 Outline 246 1 2 Service Tools 248...

Page 257: ...erant mixture of two or more refrigerants having similar boiling points 3 The design pressure is different at each product Please refer to the installation manual for each product Reference 1 MPa 10 1...

Page 258: ...New Refrigerant R 410A 247 Thermodynamic characteristic of R 410A Temperature Steam pressure kPa Liquid Vapor Density kg m3 Liquid Vapor Specific heat at constant pressure kJ kgK Liquid Vapor Specific...

Page 259: ...07C R 22 Gauge manifold Charge hose 2Do not use the same tools for R 22 and R 410A 2Thread specification differs for R 410A and R 407C Gas detector 2The same tool can be used for HFCs Vacuum pump pump...

Page 260: ...pipe extension margin of 0 to 0 5mm was provided for flaring For R 410A air conditioners perform pipe flaring with a pipe extension margin of 1 0 to 1 5mm For clutch type only Conventional tool with...

Page 261: ...um degree of vacuum 50 l min 50Hz Select a vacuum pump which is able to keep 60 l min 60Hz the vacuum degree of the system in excess of 2 Suction port UNF7 16 20 1 4 Flare 14 6 psi 5 torr or 5000 micr...

Page 262: ...Since HFCs do not contain chlorine new tester detects hydrogen 5 Refrigerant oil Specifications 2 Contains synthetic oil therefore it can be used for piping work of every refrigerant cycle 2 Offers hi...

Page 263: ...sure 3685 psi 259 kg cm2 2 Available with and without hand operate valve that prevents refrigerant from outflow Differences 2 Pressure proof hose 2 Change in service port diameter 2 Use of nylon coate...

Page 264: ...t R 410A Precautions for New Refrigerant R 410A 253 Regarding purchasing of service tools please contact following address Daikin U S Corporation Dallas Office 1645 Wallace Dr Ste 110 Carrollton TX 75...

Page 265: ...Precautions for New Refrigerant R 410A SiUS39 601 254 Precautions for New Refrigerant R 410A...

Page 266: ...its Number and Capacity 4 Contents of Control Modes 79 Cool Heat Mode Switching 89 Cooling Operation Fan Control 39 Current Sensor Malfunction 151 D Defrosting Operation 43 Demand Operation 57 Diode M...

Page 267: ...alfunction of Thermistor R1T for Suction Air 133 Malfunction of Thermistor R2T for Heat Exchanger 131 Malfunction of Thermistor R2T for Suction Pipe 153 Malfunction of Thermistor R3T for Gas Pipes 132...

Page 268: ...it 72 Setting Modes Auto Restart after Power Failure Reset 74 Fan Speed Changeover When Thermostat is OFF 74 Filter Sign Setting 73 Ultra Long Life Filter Sign Setting 73 Setting by pushbutton switche...

Page 269: ...SiUS39 601 iv Index...

Page 270: ...Tripped During Heating Operation 59 When the Float Switch is Tripped While Cooling OFF by Thermostat 58 When the Float Switch is Tripped While the Cooling Thermostat is ON 58 E Error of External Prot...

Page 271: ...183 Malfunction of Transmission Between Optional Controllers for Centralized Control 195 203 Malfunction of Transmission Between Outdoor Units 181 Malfunction of Transmission Between Remote Controller...

Page 272: ...US39 601 Drawings Flow Charts vii W Weigher for refrigerant charge 252 Wired Remote Controller 69 Wireless Remote Controller Indoor Unit 70 Wiring Diagrams for Reference Indoor Unit 226 Outdoor Unit 2...

Page 273: ...SiUS39 601 Printed in U S A 10 2006 AK This book is made of recycled paper 1645 Wallace Drive Suite 110 Carrollton TX75006 info daikinac com www daikinac com AMERICAS...

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