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Daikin VRV II RXYQ8MY1K, Service Manual

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Daikin VRV II RXYQ8MY1K Service Manual Download Page 244

Si39-502A

Troubleshooting (OP: Unified ON/OFF Controller)

Troubleshooting

233

Check No. 1

Check on pulse input of position signal of fan inverter PC board

(1) Disconnect the connector X2A while power supply OFF and operation OFF.
(2) Is the voltage between pins No. 4 and 5 on X2A approx. 15 V after power supply is turned 

on?

(3) Connect the connector X2A while power supply OFF and operation OFF.
(4) Check below conditions when the fan motor is rotated one turn manually under the condition 

of operation OFF after power supply is turned ON.
Are the pulse (approx. 0 V and 5 V) generated 4 times between No. 1 and 5 on X2A?
Are the pulse (approx. 0 V and 5 V) generated 4 times between No. 2 and 5 on X2A?
Are the pulse (approx. 0 V and 5 V) generated 4 times between No. 3 and 5 on X2A?

The condition (2) dose not appear 

→

 Faulty PC board 

→

 Replacing the PC board

The conditions (4) do not appear 

→

 Faulty hall IC 

→

 Replacing fan motor of outdoor unit

5 Gray

4 Pink

3 Orange

2 Blue

1 Yellow

GND

Vcc (approx. 15 V)

Position signal W

Position signal V

Position signal U

Summary of Contents for VRV II RXYQ8MY1K

Page 1: ...ct exposure to the sea breeze should be avoided and choose an outdoor unit with anti corrosion treatment Cautions on product corrosion Ask a qualified installer or contractor to install this product D...

Page 2: ...t 44 1 1 RXYQ8M 10M 44 2 Functional Parts Layout 46 2 1 RXYQ8M 10M 46 3 Refrigerant Flow for Each Operation Mode 47 Part 4 Function 51 1 Function General 52 1 1 Symbol 52 1 2 Operation Mode 53 2 Basic...

Page 3: ...d Layout 93 3 Field Setting 94 3 1 Field Setting from Remote Controller 94 3 2 Field Setting from Outdoor Unit 106 Part 6 Troubleshooting 133 1 Symptom based Troubleshooting 136 2 Troubleshooting by R...

Page 4: ...on Pipe 182 3 27 J6 Outdoor Unit Malfunction of Thermistor R4T for Outdoor Unit Heat Exchanger Deicer 183 3 28 J7 Outdoor Unit Malfunction of Receiver Outlet Liquid Pipe Thermistor R6T 184 3 29 J9 Out...

Page 5: ...leshooting OP Schedule Timer 220 5 1 UE Malfunction of Transmission Between Centralized Controller and Indoor Unit 220 5 2 M1 PC Board Defect 222 5 3 M8 Malfunction of Transmission Between Optional Co...

Page 6: ...of Replacing The Inverter s Power Transistors and Diode Modules 280 Part 8 Precautions for New Refrigerant R 410A 283 1 Precautions for New Refrigerant R 410A 284 1 1 Outline 284 1 2 Refrigerant Cylin...

Page 7: ...lug 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 equipmen...

Page 8: ...he applicable model and appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools can cause an electrical shock excessive heat generation o...

Page 9: ...ice valve to prevent the refrigerant gas from leaking into the room The refrigerant gas itself is harmless but it can generate toxic gases when it contacts flames such as fan and other heaters stoves...

Page 10: ...shock Be sure to measure the insulation resistance after the repair and make sure that the resistance is 1 Mohm or higher Faulty insulation can cause an electrical shock Be sure to check the drainage...

Page 11: ...ystem 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 suit their needs This serv...

Page 12: ...2A 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 4 3 Combination of Outdoor Units 5 4 Capacity R...

Page 13: ...ing Mounted Duct Type FXDQ 20N 25N 32N 40N 50N 63N Ceiling Mounted Built In Type FXSQ 20M 25M 32M 40M 50M 63M 80M 100M 125M Ceiling Mounted Duct Type FXMQ 40M 50M 63M 80M 100M 125M 200M 250M Ceiling S...

Page 14: ...FXNQ25M FXNQ32M FXNQ40M FXNQ50M FXNQ63M Slim Ceiling Mounted Duct Type FXDQ20N FXDQ25N FXDQ32N FXDQ40N FXDQ50N FXDQ63N with Drain Pump VE without Drain Pump VET Ceiling Suspended Cassette Type Connec...

Page 15: ...External Appearance Si39 502A 4 General Information 2 2 Outdoor Units 8 10HP 16 18 20HP 24 26 28 30HP RXYQ16M 18M 20M RXYQ24M 26M 28M 30M RXYQ8M 10M...

Page 16: ...For multiple connection of 16HP system or more an optional Daikin Outdoor Unit Multi Connection Piping Kit is required System Capacity Number of units Module Outdoor Unit Multi Connection Piping Kit...

Page 17: ...le Flow FXCQ 20M 25M 32M 40M 50M 63M 80M 125M Ceiling Mounted Cassette Type Multi Flow FXFQ 25M 32M 40M 50M 63M 80M 100M 125M Ceiling Mounted Cassette Corner Type FXKQ 25M 32M 40M 63M Slim Ceiling Mou...

Page 18: ...Si39 502A Specifications 7 Part 2 Specifications 1 Specifications 8 1 1 Outdoor Units 8 1 2 Indoor Units 16...

Page 19: ...Fin Coil Cross Fin Coil Comp Type Hermetically Sealed Scroll Type Hermetically Sealed Scroll Type Piston Displacement m h 13 72 10 53 13 72 10 53 Number of Revolutions r p m 6480 2900 6480 2900 Motor...

Page 20: ...aled Scroll Type Hermetically Sealed Scroll Type Hermetically Sealed Scroll Type Piston Displacement m h 13 72 10 53 13 72 10 53 13 72 10 53 13 72 10 53 13 72 10 53 13 72 10 53 Number of Revolutions r...

Page 21: ...765 1600 1240 765 1600 1240 765 1600 1240 765 1600 1240 765 1600 1240 765 Heat Exchanger Cross Fin Coil Cross Fin Coil Comp Type Hermetically Sealed Scroll Type Hermetically Sealed Scroll Type Piston...

Page 22: ...40 765 1600 1240 765 1600 1240 765 1600 1240 765 1600 1240 765 1600 1240 765 Heat Exchanger Cross Fin Coil Cross Fin Coil Comp Type Hermetically Sealed Scroll Type Hermetically Sealed Scroll Type Pist...

Page 23: ...in Coil Comp Type Hermetically Sealed Scroll Type Hermetically Sealed Scroll Type Piston Displacement m h 13 72 10 53 13 72 10 53 Number of Revolutions r p m 6480 2900 6480 2900 Motor Output Number of...

Page 24: ...aled Scroll Type Hermetically Sealed Scroll Type Hermetically Sealed Scroll Type Piston Displacement m h 13 72 10 53 13 72 10 53 13 72 10 53 13 72 10 53 13 72 10 53 13 72 10 53 Number of Revolutions r...

Page 25: ...765 1600 1240 765 1600 1240 765 1600 1240 765 1600 1240 765 1600 1240 765 Heat Exchanger Cross Fin Coil Cross Fin Coil Comp Type Hermetically Sealed Scroll Type Hermetically Sealed Scroll Type Piston...

Page 26: ...40 765 1600 1240 765 1600 1240 765 1600 1240 765 1600 1240 765 1600 1240 765 Heat Exchanger Cross Fin Coil Cross Fin Coil Comp Type Hermetically Sealed Scroll Type Hermetically Sealed Scroll Type Pist...

Page 27: ...am Piping Connections Liquid Pipes mm 6 4 Flare Connection 6 4 Flare Connection 6 4 Flare Connection 6 4 Flare Connection Gas Pipes mm 12 7 Flare Connection 12 7 Flare Connection 12 7 Flare Connection...

Page 28: ...Foam Piping Connections Liquid Pipes mm 6 4 Flare Connection 9 5 Flare Connection 9 5 Flare Connection 9 5 Flare Connection Gas Pipes mm 12 7 Flare Connection 15 9 Flare Connection 15 9 Flare Connecti...

Page 29: ...Material Polyurethane Form Polyurethane Form Polyurethane Form Polyurethane Form Piping Connections Liquid Pipes mm 6 4 Flare Connection 6 4 Flare Connection 6 4 Flare Connection 6 4 Flare Connection...

Page 30: ...croprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Polyurethane Form Polyurethane Form Polyurethane Form Polyurethane Form Piping Connections Liquid Pipes mm 9...

Page 31: ...pes mm 6 4 Flare Connection 6 4 Flare Connection 6 4 Flare Connection 9 5 Flare Connection Gas Pipes mm 12 7 Flare Connection 12 7 Flare Connection 12 7 Flare Connection 15 9 Flare Connection Drain Pi...

Page 32: ...w Rate H L m min 9 5 7 5 9 5 7 5 10 5 8 5 External Static Pressure Pa 44 15 5 44 15 5 44 15 5 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and...

Page 33: ...Flow Rate H L m min 10 5 8 5 12 5 10 0 16 5 13 0 External Static Pressure Pa 44 15 5 44 15 5 44 15 5 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Coo...

Page 34: ...2 1 62 1 Air Flow Rate H L m min 9 5 7 5 9 5 7 5 10 5 8 5 External Static Pressure Pa 44 15 5 44 15 5 44 15 5 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat...

Page 35: ...130 1 130 1 Air Flow Rate H L m min 10 5 8 5 12 5 10 0 16 5 13 0 External Static Pressure Pa 44 15 5 44 15 5 44 15 5 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Th...

Page 36: ...4 10 86 42 10 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermo...

Page 37: ...1 10 122 66 10 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Therm...

Page 38: ...78 20 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 39: ...in 14 11 5 14 11 5 14 11 5 19 5 16 cfm 494 406 494 406 494 406 688 565 External Static Pressure 50 60Hz Pa 157 157 118 108 4 157 157 118 108 4 157 157 118 108 4 157 160 108 98 4 Drive Direct Drive Dir...

Page 40: ...r Output Number of Units W 270 1 430 1 380 2 380 2 Air Flow Rate H L m min 29 23 36 29 58 50 72 62 cfm 1 024 812 1 271 1 024 2 047 1 765 2 542 2 189 External Static Pressure 50 60Hz Pa 157 172 98 98 4...

Page 41: ...Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cool...

Page 42: ...5 9 5 5 cfm 265 159 282 177 318 194 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating...

Page 43: ...15 12 19 14 cfm 424 318 530 424 671 494 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Hea...

Page 44: ...282 212 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat f...

Page 45: ...4 388 565 424 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermo...

Page 46: ...247 212 282 212 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Ther...

Page 47: ...88 300 494 388 565 424 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocess...

Page 48: ...d Pipes mm 9 5 Flare Connection 9 5 Flare Connection 9 5 Flare Connection Gas Pipes mm 15 9 Flare Connection 15 9 Flare Connection 15 9 Flare Connection Drain Pipe mm VP20 External Dia 26 Internal Dia...

Page 49: ...1 40 1 Air Flow Rate H L m min 7 5 4 5 8 5 9 5 5 cfm 265 159 282 177 318 194 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Micropr...

Page 50: ...oling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Air Filter...

Page 51: ...Air Flow Rate H L m min 7 6 7 6 8 6 cfm 247 212 247 212 282 212 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermo...

Page 52: ...5 Face Area m 0 200 0 282 Fan Model 2D14B13 2D14B20 Type Sirocco Fan Sirocco Fan Motor Output Number of Units W 25 1 35 1 Air Flow Rate H L m min 11 8 5 14 11 cfm 388 300 494 388 Drive Direct Drive D...

Page 53: ...Specifications Si39 502A 42 Specifications...

Page 54: ...Si39 502A Refirgerant Circuit 43 Part 3 Refrigerant Circuit 1 Refrigerant Circuit 44 1 1 RXYQ8M 10M 44 2 Functional Parts Layout 46 2 1 RXYQ8M 10M 46 3 Refrigerant Flow for Each Operation Mode 47...

Page 55: ...pressure switch For STD compressor 1 S Fusible plug In order to prevent the increase of pressure when abnormal heating is caused by fire or others the fusible part of the plug is molten at a temperat...

Page 56: ...Si39 502A Refrigerant Circuit Refirgerant Circuit 45 RXYQ8M 10M 3D049524 1 4 N Q M 3 8 6 D S F J 7 U L P A B O 2 V X W E Y...

Page 57: ...sensor High pressure S1NPH Thermistor Outdoor air R1T Compressor INV M1C Compressor STD1 M2C Thermistor Suction pipe R2T Pressure sensor Low pressure S1NPL Thermistor Subcooling heat exchanger outlet...

Page 58: ...Heat exchanger Electronic expansion valve EV Nomal control Filter Filter Fan Heat exchanger pipe Receiver Solenoid valve Solenoid valve Check valve Check valve Check valve Solenoid valve Check valve...

Page 59: ...control Filter Filter Fan Heat exchanger pipe Receiver Solenoid valve Solenoid valve Check valve Check valve Check valve Solenoid valve Check valve Filter Filter Filter Filter Filter Filter Filter Fi...

Page 60: ...mperature high pressure gas High temperature high pressure liquid Low temperature low pressure Heat exchanger Electronic expansion valve Filter Filter Fan Heat exchanger pipe Receiver Solenoid valve S...

Page 61: ...ansion valve EV Nomal control Filter Filter Fan Heat exchanger pipe Receiver Solenoid valve Solenoid valve Check valve Check valve Check valve Solenoid valve Check valve Filter Filter Filter Filter Fi...

Page 62: ...Pressure Equalization Prior to Startup 68 4 Protection Control 69 4 1 High Pressure Protection Control 69 4 2 Low Pressure Protection Control 70 4 3 Discharge Pipe Protection Control 71 4 4 Inverter P...

Page 63: ...cted by high pressure sensor Pe S1NPL Value detected by low pressure sensor SH Evaporator outlet superheat SHS Target evaporator outlet superheat SVG Y2S Solenoid valve for discharging gas from receiv...

Page 64: ...tion 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 Outdoor unit r...

Page 65: ...rotection PI control High pressure protection Low pressure protection Td protection INV protection Outdoor unit fan M1F Cooling fan control Step 7 or 8 Four way valve 20S1 Y1R OFF ON Main motorized va...

Page 66: ...alue Varies depending on Te setting operating frequency etc On multi outdoor unit systems this control is made according to values of the first priority unit which is detected with the pressure sensor...

Page 67: ...according to the rotation of outdoor units RXYQ8M 10M INV STD1 No 1 No 2 Pattern 1 Pattern 2 Pattern 3 RXYQ16M 18M 20M INV STD1 No 1 No 3 No 2 No 4 INV STD1 No 2 No 4 No 1 No 3 RXYQ24M 26M 28M 30M INV...

Page 68: ...4Hz OFF OFF OFF 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...

Page 69: ...tor side for the full use of the subcooling heat exchanger 2 4 Step Control of Outdoor Unit Fans Used to control the revolutions of outdoor unit fans in the steps listed in table below according to co...

Page 70: ...iate liquid pressure thus ensuring refrigerant circulation rate to be supplied to indoor units Upper limit of fan revolutions Step 8 Upper limit of outdoor unit fan revolutions Step 7 1 step on outdoo...

Page 71: ...15 sec when Pc 2 16MPa 1 step 15 sec when Pc 1 77MPa Four way valve OFF OFF OFF Main motorized valve EV1 0 pls 2000 pls 2000 pls Subcooling motorized valve EV2 0 pls 0 pls 0 pls Hot gas bypass valve S...

Page 72: ...able above Non operating units perform the operations listed in the table above from the oil return operation Non operating unit stops during oil return preparation operation Outdoor unit actuator Oil...

Page 73: ...eturn operation Compressor Upper limit control 124 Hz ON OFF 1 step increase from 74 Hz OFF OFF to Pc Pe 0 4 MPa time Outdoor unit fan STEP7 or STEP8 OFF STEP8 Four way valve ON OFF ON Main motorized...

Page 74: ...on operating units perform the operations listed in the table above from the defrost operation Non operating unit stops during defrost preparation operation Outdoor unit actuator Defrost preparation o...

Page 75: ...t operation Slave unit operation Compressor 210 Hz OFF OFF OFF Outdoor unit fan Fan control OFF Four way valve OFF OFF Main motorized valve EV1 2000 pls 0 pls Subcooling motorized valve EV2 0 pls 0 pl...

Page 76: ...er Control In order to prevent the refrigerant from melting in the compressor oil in the stopped mode this mode is used to control the crankcase heater Actuator Operation Remarks Compressor OFF Outdoo...

Page 77: ...it fan OFF Four way valve Holds Main motorized valve EV1 0 pls Subcooling motorized valve EV2 0 pls Hot gas bypass valve SVP OFF Receiver gas discharging valve SVG OFF Non operating unit liquid pipe s...

Page 78: ...TEP4 OFF Four way valve OFF Holds ON Main motorized valve EV1 150 pls to 300 pls 0 pls Subcooling motorized valve EV2 0 pls 0 pls Hot gas bypass valve SVP ON ON Receiver gas discharging valve SVG OFF...

Page 79: ...y valve Holds Main motorized valve EV1 0 pls Subcooling motorized valve EV2 0 pls Hot gas bypass valve SVP OFF Receiver gas discharging valve SVG OFF Non operating unit liquid pipe stop valve SVSL ON...

Page 80: ...er limit frequency 210 Hz High pressure limited Pc 3 47MPa Pc 3 64MPa Pc 3 24MPa Pc 3 55MPa STD compressor standby for 5 mins Pc HP pressure sensor detection value for each outdoor unit When occurring...

Page 81: ...tandby Low pressure limited All STD compressors stop Master unit 52 Hz OFF OFF Slave unit Stop Pe 0 25MPa Pe 0 39MPa Pe 0 07MPa Pe LP pressure sensor detection value for master unit When occurring 4 t...

Page 82: ...tion INV upper limit frequency 1 step down from current compressor frequency INV upper limit frequency 1 step up from current compressor frequency INV62 Hz OFF OFF HTdi 115 C Tp 140 C or Every 30 sec...

Page 83: ...limit frequency 210 Hz INV upper limit frequency 1 step down from current compressor frequency INV upper limit frequency 1 step up from current compressor frequency Invertercurrent 13 5A Inverter curr...

Page 84: ...ting from failures of STD compressor such as locking STD compressor ON CT detection current value 15 0 STD compressor OFF for 30 min Demand to operate When occurring 3 times within 90 minutes the malf...

Page 85: ...mple The following diagram shows outdoor unit rotation in combination of 3 outdoor units Master unit slave unit 1 and slave unit 2 in this section are the names for installation They are determined in...

Page 86: ...ton BS2 42 times 3 Press the RETURN button BS3 once 4 Press the SET button BS2 once 5 Press the RETURN button BS3 twice 6 Press the MODE button BS1 once In order to set STD1 compressors to operation p...

Page 87: ...tion prohibition mode set No 38 of Setting mode 2 to MASTER OPERATION PROHIBITION Procedure 1 Press and hold the MODE button BS1 for a period of 5 seconds or more 2 Press the SET button BS2 38 times 3...

Page 88: ...nsumption the capacity of outdoor unit is saved with control forcibly by using Demand 1 Setting or Demand 2 Setting To operate the unit with this mode additional setting of Continuous Demand Setting o...

Page 89: ...tton 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 the f...

Page 90: ...set 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 Rem...

Page 91: ...w multi flow and corner types P0 P1 P2 P4 P3 P0 P1 P2 P4 P3 P0 P0 P1 P2 P4 P4 P2 P1 P0 P4 P4 P3 P2 P1 P0 P3 Existing position Draft prevention position Standard Setting position Ceiling soiling preven...

Page 92: ...temperature Ex When cooling Assuming the preset temperature in the figure above is 24 C and the suction temperature has changed from 18 C to 30 C A F This example also assumes there are several other...

Page 93: ...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 24 C and the suction temperature has changed from 18...

Page 94: ...mation on page onward 6 5 Thermostat Control in Dry Operation While in dry operation the thermostat control is conducted according to a suction temperature at the time of starting the dry operation As...

Page 95: ...e 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 Temperatur...

Page 96: ...converting the heater temperature into the condensing pressure equivalent saturated temperature Tc according to the temperature detection through the high pressure sensor SINPH of the outdoor unit Fan...

Page 97: ...tat OFF mode for prevention of cold air Swing LL Horizontal Horizontal Horizontal Wind direction set LL Horizontal Horizontal Horizontal Stop Swing OFF Horizontal Horizontal Totally closed Wind direct...

Page 98: ...t Operation 1 Test Operation 88 1 1 Procedure and Outline 88 1 2 Operation When Power is Turned On 92 2 Outdoor Unit PC Board Layout 93 3 Field Setting 94 3 1 Field Setting from Remote Controller 94 3...

Page 99: ...erant charge with the stop valve open and the power supply OFF the refrigerant may be mixed in the compressor thus decreasing the insulation resistance Heat the compressor as shown on the right and th...

Page 100: ...The H2P blinks during operation and TEST OPERAION and UNDER CENTRALIZED CONTROL are displayed on the remote controller Even if no stop operation is conducted the equipment will automatically stop aft...

Page 101: ...l the outside panels closed except for the switch box While in the test operation operating sounds such as refrigerant passing sounds or solenoid valve switching sounds may become louder Completion of...

Page 102: ...ing the TEST OPERATION button at the first test operation after installation the malfunction code U3 will be displayed Be sure to conduct the check operation according to 1 1 3 Check Operation for det...

Page 103: ...set during operation described above Indoor unit If ON button is pushed during operation described above the UH malfunction indicator blinks Returns to normal when automatic setting is complete Outdoo...

Page 104: ...2 Set mode display LED 3 Mode setting switch 1 Service monitor 4 Local setting switch Connection terminal for transmission use DS1 DS2 DS3 HAP V3054 1 Service monitor This monitor blinks while in norm...

Page 105: ...1 62 1 When in the normal mode press the button for a minimum of four seconds and the FIELD SET MODE is entered 2 Select the desired MODE NO with the button 3 During group control when setting by each...

Page 106: ...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 settings...

Page 107: ...h indoor unit mode No 20 22 and 23 have been selected push the BS8 BUTTON unit No and select the INDOOR UNIT NO to be set This operation is unnecessary when setting by group 5 Push the BS9 BUTTON set...

Page 108: ...ter 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 thermostat Operationoutput Ma...

Page 109: ...ncealed Floor standing type New Ceiling suspended cassette type Multi flow Double flow Corner type FXFQ FXCQ FXKQ FXDQ FXSQ FXMQ FXHQ FXAQ FXLQ FXNQ FXUQ Filter sign Ultra long life filter sign Remote...

Page 110: ...air conditioners with the setting the units may start automatically after power failure reset or the main power supply turned on again return to the same operation condition as that of before power fa...

Page 111: ...ing Ceiling height 4 way Outlets 3 way Outlets 2 way Outlets 13 23 0 01 Standard N Lower than 2 7 m Lower than 3 0 m Lower than 3 5 m 02 High Ceiling H Lower than 3 0 m Lower than 3 3 m Lower than 3 8...

Page 112: ...arts 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 Setting of the stati...

Page 113: ...accept the operation for about one minute with the display of 88 2 While in the normal mode hold down the button for a minimum of 4 seconds The remote controller will enter the FIELD SET MODE 3 Selec...

Page 114: ...to the normal mode Group No Setting Example Caution When turning the power supply on the unit may often not accept any operation while 88 is displaying after all indications were displayed once for a...

Page 115: ...ation 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 cont...

Page 116: ...l by remote controller Controlmode Operation OFF Temperature control Operation mode setting Unified operation individual operation by central remote controller or operation controlled by timer Unified...

Page 117: ...ty setting to ON with No 29 B The low noise operation aforementioned is enabled in nighttime automatic low noise operation mode Start time Selectable in the range of 20 00 to 24 00 hours End time Sele...

Page 118: ...concerned or outdoor unit s concerned and to conduct emergency operation of the system only with operable compressor s or outdoor unit s Make this setting while in Setting mode 2 For system with a si...

Page 119: ...2 1 4 setting has not been carried out error code UA is displayed and unit can not be operated DS No Item Contents DS1 1 Cool Heat change over setting ON COOL HEAT setting is made with the use of a re...

Page 120: ...est Operation 109 Detail of DS1 1 4 DS2 1 4 setting New unit Setting method represents the position of switches HEAT PUMP 8HP RXYQ8M Set DS1 4 DS2 1 and DS2 3 to ON HEAT PUMP 10HP RXYQ10M Set DS1 4 DS...

Page 121: ...2P COOL HEAT select Low noise H6P Demand H7P Multi H8P IND H3P MASTER H4P SLAVE H5P Single outdoor unit system 7 7 8 7 7 7 7 7 Outdoor multi system Master 7 7 8 7 7 7 7 8 Slave 1 7 7 7 7 7 7 7 9 Slave...

Page 122: ...MODE BS1 button to set the system to Setting mode 1 Normally Setting mode 1 is set In case of other status push MODE BS1 button one time and set to Setting mode 1 Check the system for each condition t...

Page 123: ...ENECUT test operation Used to forcedly turn ON the ENECUT Be noted that the ENECUT is only functional with outdoor unit in the stopped state Japanese domestic model only 25 Setting of external low noi...

Page 124: ...placement of the part is required 39 Emergency operation Setting for the slave unit 1 operation prohibition in multi outdoor unit system 40 Emergency operation Setting for the slave unit 2 operation p...

Page 125: ...n setting 8 7 7 8 7 8 8 OFF 8777778 ON 8777787 12 External low noise demand setting 8 7 7 8 8 7 7 External low noise demand NO 8777778 External low noise demand YES 8777787 13 Airnet address 8 7 7 8 8...

Page 126: ...actory setting 8777877 28 Power transistor check mode 8 7 8 8 8 7 7 OFF 8777778 ON 8777787 29 Capacity precedence setting 8 7 8 8 8 7 8 OFF 8777778 ON 8777787 30 Demand setting 1 8 7 8 8 8 8 7 60 dema...

Page 127: ...gits upper 13 Number of terminal blocks 9 7 7 8 8 7 8 Lower 4 digits lower 14 Contents of malfunction the latest 8 7 7 8 8 8 7 Malfunction code table Refer page 149 150 15 Contents of malfunction 1 cy...

Page 128: ...r 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 129: ...oor unit system simultaneously in accordance with unified master outdoor unit by indoor unit remote controller f Set cool heat for more than one outdoor unit system simultaneously in accordance with u...

Page 130: ...ly for Each Outdoor Unit System by Cool Heat Switching Remote Controller 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 c...

Page 131: ...for outdoor unit on either the outdoor outdoor indoor outdoor transmission line Set outdoor unit PC board DS1 1 to IN factory set In setting mode 1 set the outdoor unit you want to give cool heat sel...

Page 132: ...oor outdoor transmission line Mount the COOL HEAT selection remote controller to the master outdoor unit for the unified control Set the DS1 1 on the PC board of master outdoor unit to OUT In setting...

Page 133: ...tches the unified cool heat address of outdoor unit main PC board Address setting for e and f Set lower 5 digits with binary number No 0 to No 31 Address No Outdoor unit PC board LED Set with setting...

Page 134: ...he low noise operation is carried out automatically at night The external control adapter for outdoor unit is not required 1 While in Setting mode 2 select the setting condition i e Mode 1 Mode 2 or M...

Page 135: ...Field Setting Si39 502A 124 Test Operation 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 136: ...ile in Setting mode 2 select the set item No 30 Setting of Demand 1 level and then set the setting condition to targeted mode B When the continuous demand operation is carried out Use of the external...

Page 137: ...set to ON OFF has been set at factory the power consumption can be set with the Demand 1 level setting 70 of rated power consumption has been set at factory Power consumption Rated power consumption...

Page 138: ...n 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 Setting N...

Page 139: ...z z 9 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...

Page 140: ...nfirm LIQ and SUCTION Stop valve closed Is all refrigerant charged Is all refrigerant charged YES YES NO Turn off the power Charge through Service port of LIQ Stop valve Open LIQ SUCTION Stop valve Op...

Page 141: ...charging operation set item No 20 again and then start the operation When the charging immediately stops even by restarting the refrigerant is charged excessively The refrigerant cannot be charged any...

Page 142: ...g and learning for the minimum opening degree of motorized valve 3 2 8 Power Transistor Check Operation When the inverter system malfunctions malfunction of inverter INV compressor to locate where the...

Page 143: ...Field Setting Si39 502A 132 Test Operation...

Page 144: ...9 C4 Indoor Unit Malfunction of Thermistor R2T for Heat Exchanger 162 3 10 C5 Indoor Unit Malfunction of Thermistor R3T for Gas Pipes 163 3 11 C9 Indoor Unit Malfunction of Thermistor R1T for Suction...

Page 145: ...Transmission Between Indoor Units 201 3 44 U5 Indoor Unit Malfunction of Transmission Between Remote Controller and Indoor Unit 203 3 45 U7 Indoor Unit Malfunction of Transmission Between Outdoor Uni...

Page 146: ...tralized Control 224 5 5 MC Address Duplication Improper Setting 226 6 Troubleshooting OP Unified ON OFF Controller 227 6 1 Operation Lamp Blinks 227 6 2 Display Under Centralized Control Blinks Repea...

Page 147: ...e that the system is controlled so as not to put unreasonable loads on the system Normal operation The system will automatically start operation after a lapse of five minutes Pressing the TEMP ADJUST...

Page 148: ...r and outdoor units After the completion of defrosting operation the system is switched to heating operation Defrosted moisture turns to be vapor and comes out from the units Normal operation 11 The s...

Page 149: ...ure the remote controller is normal Normal operation This code is displayed for a period of approximately one minute at maximum 16 The outdoor unit compressor or the outdoor unit fan does not stop Aft...

Page 150: ...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 151: ...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 152: ...duct all of 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 confirme...

Page 153: ...Troubleshooting by Remote Controller Si39 502A 142 Troubleshooting The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed...

Page 154: ...el code Model RSXYP RXYP RSEYP RSXYP L RXYQ M RXYQ MA RXYQ M Unit Malfunction code Inspection Normal display No display 0 L 0 Malfunction code blinks when a malfunction occurs Unit Malfunction code In...

Page 155: ...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 156: ...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 directio...

Page 157: ...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 158: ...lock or over current 170 E7 9 9 9 Malfunction of outdoor unit fan motor 172 E9 9 9 9 Malfunction of moving part of electronic expansion valve Y1E Y2E 174 F3 9 9 9 Abnormal discharge pipe temperature...

Page 159: ...tem 207 UA 9 9 9 Improper combination of indoor and outdoor units indoor units and remote controller 209 UC 8 8 8 Address duplication of central remote controller 210 UE 9 9 9 Malfunction of transmiss...

Page 160: ...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 161: ...9 7 9 7 9 7 9 9 7 9 9 9 7 7 7 7 9 7 7 9 9 7 7 7 7 7 7 7 7 9 7 9 9 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 9 7 9 9 7 9 9 7 7 7 7 7 7 9 7 9 7 9 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7...

Page 162: ...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 163: ...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 164: ...FXHQ Option FXMQ200 250M Option FXAQ Option Method of Malfunction Detection By float switch OFF detection Malfunction Decision Conditions When rise of water level is not a condition and the float swi...

Page 165: ...door 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 166: ...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 connec...

Page 167: ...tion 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 ener...

Page 168: ...ce 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 When the ai...

Page 169: ...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 170: ...ctronic expansion valve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins Normal Continuity No continuity Pin No 1 White 2 Yellow 3 Orange...

Page 171: ...When 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...

Page 172: ...n 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 forgo...

Page 173: ...nected or shorted while the unit is running Supposed Causes Defect of thermistor R2T for liquid pipe Defect of indoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Character...

Page 174: ...orted while the unit is running Supposed Causes Defect of indoor unit thermistor R3T for gas pipe Defect of indoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characterist...

Page 175: ...connected 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 Refer to Thermistor Resistance Temperat...

Page 176: ...comes 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 th...

Page 177: ...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 outdoor unit PC board A1P Troubles...

Page 178: ...aneous 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...

Page 179: ...f outdoor unit PC board Stop valve is not opened Troubleshooting 1 Voltage measurement point 2 Refer to Pressure Sensor pressure voltage characteristics table on P279 V2791 Caution Be sure to turn off...

Page 180: ...e is detected Supposed Causes Compressor lock High differential pressure 0 5MPa or more Incorrect UVWN wiring Faulty inverter PC board Stop valve is left in closed Troubleshooting Check the installati...

Page 181: ...0MY1K E YLK E Method of Malfunction Detection Detects the overcurrent with current sensor CT Malfunction Decision Conditions Malfunction is decided when the detected current value exceeds the below me...

Page 182: ...s the power supply voltage normal NO NO NO YES NO Is the magnetic switch K2M K3M normal Is above wiring correct NO Is current sensor correct Caution Be sure to turn off power switch before connect or...

Page 183: ...mes the 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 matt...

Page 184: ...supply cable YES Is the LED HAP on fan inverter PC board blinking NO Check No 3 Check on connector of fan motor Signal wire YES Are the resistance values between phases of U V W balanced Is there any...

Page 185: ...PC board 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...

Page 186: ...ctronic expansion valve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins Normal Continuity No continuity Pin No 1 White 2 Yellow 3 Orange...

Page 187: ...charge pipe temperature rises suddenly Supposed Causes Faulty discharge pipe temperature sensor Faulty connection of discharge pipe temperature sensor Faulty outdoor unit PC board Troubleshooting Refe...

Page 188: ...pipe temperature is lower than evaporating temperature during check operation Supposed Causes Refrigerant overcharge Disconnection of the suction pipe thermistor Disconnection of the subcooling heat...

Page 189: ...r of fan motor connection cable Fan Inverter PC board malfunction Troubleshooting 1 Disconnect connector X2A and measure the following resistance V3069 Turn power off Check of fan motor connector H1 C...

Page 190: ...es Defect 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 Refer to Thermistor Resistance Tem...

Page 191: ...nt sensor 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 p...

Page 192: ...osed Causes Defect of thermistor R31T or 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 Refer...

Page 193: ...e temperature thermistor is detected Supposed Causes Defect of thermistor R2T for outdoor unit suction pipe Defect of outdoor unit PC board A1P Troubleshooting Refer to Thermistor Resistance Temperatu...

Page 194: ...the heat exchange thermistor is detected Supposed Causes Defect of thermistor R4T for outdoor unit coil Defect of outdoor unit PC board A1P Troubleshooting Refer to Thermistor Resistance Temperature...

Page 195: ...ort circuited or open Supposed Causes Faulty receiver outlet liquid pipe thermistor R6T Faulty outdoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on...

Page 196: ...s short circuited or open Supposed Causes Faulty subcooling heat exchanger gas pipe thermistor R5T Faulty outdoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristi...

Page 197: ...nnection of low 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 P...

Page 198: ...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 P279 V2808...

Page 199: ...Causes Actuation of fin thermal Actuates above 98 C Defect of inverter PC board Defect of fin thermistor Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P277 V2811...

Page 200: ...ressor inspection 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...

Page 201: ...or disconnect connector or parts damage may be occurred Inverter output voltage check Inverter output voltage is not balanced Normal if within 10V Must be measured when frequency is stable Compressor...

Page 202: ...n Be sure to turn off power 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 10V Mus...

Page 203: ...Malfunction 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...

Page 204: ...he microcomputer monitor green on the inverter P C B is blinking The voltage between 2 pins of X1A on the inverter unit is 220 240 V YES Defect of outdoor main PC board or defect of inverter PC board...

Page 205: ...ing defect After turning the power supply OFF check and repair the main circuit wiring or parts 1 Loose or disconnected wiring between power supply and inverter 2 K1M contact disposition fusion or con...

Page 206: ...status 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 inve...

Page 207: ...mperature Characteristics table on P277 2 Refer to Pressure Sensor pressure voltage characteristics table on P279 V2819 The suction pipe temperature minus coil temperature is 20 C or higher Resistance...

Page 208: ...difference is made between phases Supposed Causes Power supply reverse phase Power supply open phase Defect of outdoor PC board A1P Troubleshooting V2820 Operation is normal if one place of power supp...

Page 209: ...RXYQ8 30MY1K E YLK E 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 ab...

Page 210: ...oltage between terminals P2 or P3 and N3 gradually rise to 556 VDC Y1 after turning on Monitor field power supply Replace the inverter PC board The voltage between the P2 or P3 and N3 terminals is 380...

Page 211: ...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 212: ...ction 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 of ti...

Page 213: ...door 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...

Page 214: ...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 215: ...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 216: ...LECT 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 w...

Page 217: ...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 Trouble...

Page 218: ...tion 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 system...

Page 219: ...tes or more NO Refer to failure diagnosis for U4 malfunction code NO YES 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 220: ...outdoor PC board was not conducted after replacing to spare parts PC board Troubleshooting The number of indoor units that can be connected to a single outdoor unit system depends on the type of outdo...

Page 221: ...n Conditions The malfunction decision is made as soon as the abnormality aforementioned is detected Supposed Causes Address duplication of central remote controller Defect of indoor unit PC board Trou...

Page 222: ...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 a...

Page 223: ...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 Co...

Page 224: ...ion 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 than 12 ho...

Page 225: ...o turn off power switch before connect or disconnect connector or parts damage may be occurred V2831 NO YES YES After fixing incorrect wiring push and hold the RESET button on the master outdoor unit...

Page 226: ...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 227: ...oubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V2833 Is transmission wiring disconnected or wired incorrectly The PC boar...

Page 228: ...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 229: ...t 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 Disc...

Page 230: ...ller 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 connector or part...

Page 231: ...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 a...

Page 232: ...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 233: ...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 sw...

Page 234: ...Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V2838 Is transmission wiring disconnected or wired incorrectly The PC bo...

Page 235: ...tion 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 multip...

Page 236: ...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 237: ...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 238: ...ls 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 Malfunction...

Page 239: ...er 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 240: ...ized 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 use mode o...

Page 241: ...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 242: ...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 243: ...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 244: ...en the fan motor is rotated one turn manually under the condition of operation OFF after power supply is turned ON Are the pulse approx 0 V and 5 V generated 4 times between No 1 and 5 on X2A Are the...

Page 245: ...while connector or relay connector is disconnected Check No 3 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 the motor side connect...

Page 246: ...2 3 Indoor Unit 246 3 List of Electrical and Functional Parts 263 3 1 Outdoor Unit 263 3 2 Indoor Side 264 4 Option List 269 4 1 Option List of Controllers 269 4 2 Option Lists Outdoor Unit 271 5 Pipi...

Page 247: ...Piping Diagrams Si39 502A 236 Appendix 1 Piping Diagrams 1 1 Outdoor Unit RXYQ8MY1K E YLK E RXYQ10MY1K E YLK E 3D049524...

Page 248: ...lectronic expansion valve Y1E Used for gas superheated degree control while in cooling operation or subcooled degree control while in heating operation 2 Suction air temperature thermistor R1T Used fo...

Page 249: ...Piping Diagrams Si39 502A 238 Appendix FXDQ Refrigerant pipe connection port diameters 4D043864E mm Model Gas Liquid FXDQ20N 25N 32N 40N 50NVE T 12 7 6 4 FXDQ63NVE T 15 9 9 5...

Page 250: ...Si39 502A Piping Diagrams Appendix 239 FXUQ BEVQ Indoor unit Connection Unit 4D037995F 4D034127B...

Page 251: ...Piping Diagrams Si39 502A 240 Appendix FXAQ BEVQ Indoor unit Connection Unit 4D047084 4D034127B...

Page 252: ...Si39 502A Piping Diagrams Appendix 241 FXLQ BEVQ Indoor unit Connection Unit 4D047084 4D034127B...

Page 253: ...Wiring Diagrams for Reference Si39 502A 242 Appendix 2 Wiring Diagrams for Reference 2 1 Outdoor Unit RXYQ8MY1K E YLK E RXYQ10MY1K E YLK E 3D050255...

Page 254: ...Si39 502A Wiring Diagrams for Reference Appendix 243 2 2 Field Wiring RXYQ8MY1K E YLK E RXYQ10MY1K E YLK E 3D040746J...

Page 255: ...Wiring Diagrams for Reference Si39 502A 244 Appendix RXYQ16MY1K E YLK E RXYQ18MY1K E YLK E RXYQ20MY1K E YLK E 3D040747H...

Page 256: ...Si39 502A Wiring Diagrams for Reference Appendix 245 RXYQ24MY1K E YLK E RXYQ26MY1K E YLK E RXYQ28MY1K E YLK E RXYQ30MY1K E YLK E 3D040748H...

Page 257: ...Wiring Diagrams for Reference Si39 502A 246 Appendix 2 3 Indoor Unit FXCQ20M 25M 32M 63MVE 3D039556A...

Page 258: ...Si39 502A Wiring Diagrams for Reference Appendix 247 FXCQ40M 50M 80M 125MVE 3D039557A...

Page 259: ...Wiring Diagrams for Reference Si39 502A 248 Appendix FXFQ25M 32M 40M 50M 63M 80M 100M 125MVE 3D039600A...

Page 260: ...Si39 502A Wiring Diagrams for Reference Appendix 249 FXKQ25M 32M 40M 63MVE 3D039564A...

Page 261: ...Wiring Diagrams for Reference Si39 502A 250 Appendix FXDQ20N 25N 32N 40N 50N 63NVE with Drain Pump 3D045500B...

Page 262: ...Si39 502A Wiring Diagrams for Reference Appendix 251 FXDQ20N 25N 32N 40N 50N 63NVET without Drain Pump 3D049604A...

Page 263: ...Wiring Diagrams for Reference Si39 502A 252 Appendix FXSQ20M 25M 32M 40M 50M 63M 80M 100M 125MVE 3D039561A...

Page 264: ...Si39 502A Wiring Diagrams for Reference Appendix 253 FXMQ40M 50M 63M 80M 100M 125MVE 3D039620A...

Page 265: ...Wiring Diagrams for Reference Si39 502A 254 Appendix FXMQ200M 250MVE 3D039621A...

Page 266: ...Si39 502A Wiring Diagrams for Reference Appendix 255 FXHQ32M 63M 100MVE 3D039801C...

Page 267: ...Wiring Diagrams for Reference Si39 502A 256 Appendix FXAQ20M 25M 32M 40M 50M 63MVE 3D034206A...

Page 268: ...Si39 502A Wiring Diagrams for Reference Appendix 257 FXLQ20M 25M 32M 40M 50M 63MVE FXNQ20M 25M 32M 40M 50M 63MVE 3D039826A...

Page 269: ...Wiring Diagrams for Reference Si39 502A 258 Appendix FXUQ71M 100M 125MV1 3D044973...

Page 270: ...Si39 502A Wiring Diagrams for Reference Appendix 259 FXAQ20MH 25MH 32MH 40MH 50MHV1 3D046348A...

Page 271: ...Wiring Diagrams for Reference Si39 502A 260 Appendix FXLQ20MH 25MH 32MH 40MH 50MHV1 3D046787A...

Page 272: ...Si39 502A Wiring Diagrams for Reference Appendix 261 BEVQ50MVE 3D046579A Notes...

Page 273: ...Wiring Diagrams for Reference Si39 502A 262 Appendix BEVQ71M 100M 125MVE 3D044901A Notes...

Page 274: ...Fully closed 0pls Fully open 2000pls Electronic expansion valve Subcool Y2E Fully closed 0pls Fully open 2000pls Pressure protection Highpressure switch For M1C S1PH OFF 4 0 MPa ON 3 0 0 15MPa For M2C...

Page 275: ...Exchanger R2T ST8602A 5 6 L1000 20k 25 C Others Float Switch S1L FS 0211B Fuse F1U 250V 5A 5 2 Thermal Fuse TFu Transformer T1R Parts Name Symbol Model Remark FXCQ 20MVE FXCQ 25MVE FXCQ 32MVE FXCQ 40...

Page 276: ...High Temp R3T ST8605 7 8 L1600 20k 25 C Thermistor Heat Exchanger R2T ST8602A 7 6 L1600 20k 25 C Others Float Switch S1L FS 0211B Fuse F1U 250V 5A 5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model...

Page 277: ...1250 20k 25 C Others Float Switch S1L FS 0211B Fuse F1U 250V 5A 5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXMQ 40MVE FXMQ 50MVE FXMQ 63MVE FXMQ 80MVE FXMQ 100MVE FXMQ 125MVE FXMQ 20...

Page 278: ...250 20k 25 C Thermistor Heat Exchanger R2T ST8602A 6 6 L 1250 20k 25 C ST8602A 6 6 L 1250 20k 25 C Others Fuse F1U 250V 5A 5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXAQ 20MVE FXAQ...

Page 279: ...troller BRC1A62 Option Wireless Remote Controller BRC4C62 Motors Fan Motor M1F AC 220 240V 50Hz 1 15W 1 25W 1 35W Thermal protector 135 C OFF 120 C ON Capacitor for Fan Motor C1R 1 0 F 400V 0 5 F 400V...

Page 280: ...imer DST301B A 61 12 External control adaptor for outdoor unit Must be installed on indoor units DTA104A61 DTA104A 62 DTA104A61 DTA104A53 DTA104A61 DTA104A62 DTA104A61 DTA104A61 13 Interface adaptor f...

Page 281: ...allow communications between VRV and BMS Operation and monitoring of air conditioning systems through BACnet communications 3 1 Optional DIII board DAM411A1 Expansion kit installed on DMS502A51 to pr...

Page 282: ...Q16MY1K YLK RXYQ18MY1K YLK RXYQ20MY1K YLK RXYQ16MY1KE YLKE RXYQ18MY1KE YLKE RXYQ20MY1KE YLKE RXYQ24MY1K YLK RXYQ26MY1K YLK RXYQ28MY1K YLK RXYQ30MY1K YLK RXYQ24MY1KE YLKE RXYQ26MY1KE YLKE RXYQ28MY1KE Y...

Page 283: ...stalling 1 To avoid the risk of oil detention in the piping between the outdoor units must be routed level or slightly upward 2 To avoid the risk of oil detention in the stopping unit always connect t...

Page 284: ...or more to indoor unit If 2 m or less If 2 m or more Piping between outdoor units Piping between outdoor units Piping between outdoor units to indoor unit 2m or less 2m or less 2m or more Rising heig...

Page 285: ...Piping Installation Point Si39 502A 274 Appendix...

Page 286: ...Si39 502A Selection of Pipe Size Joints and Header Appendix 275 6 Selection of Pipe Size Joints and Header Example of connection R 410A Type RXYQ8 30M Heat Pump 16 R 410A...

Page 287: ...8 1 Liquid 22 2 22 2 22 2 a A B C D E F G b c d e f g h i j k l m n 1 2 3 4 5 6 7 8 H1 P Outdoor unit REFNET joint A G Indoor units 1 8 Required Conditions 1 It is necessary to increase the pipe size...

Page 288: ...56 49 55 08 53 6 41 6 53 4 53 71 52 38 54 6 65 6 53 5 51 09 49 83 55 6 41 6 53 6 48 61 47 42 56 6 18 6 06 7 46 26 45 14 57 5 95 5 84 8 44 05 42 98 58 5 74 5 43 9 41 95 40 94 59 5 14 5 05 10 39 96 39...

Page 289: ...233 14 71 33 92 33 35 121 7 26 7 16 22 228 05 223 08 72 32 78 32 23 122 7 06 6 97 23 218 24 213 51 73 31 69 31 15 123 6 87 6 78 24 208 90 204 39 74 30 63 30 12 124 6 69 6 59 25 200 00 195 71 75 29 61...

Page 290: ...Low Pressure PL PH Detected Pressure High Side MPa PL Detected Pressure Low Side MPa 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 MPa VL...

Page 291: ...ing 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 diod...

Page 292: ...other than given above the power unit is defective and must be replaced Note Above figures are measured by analogue tester Make sure to set Tester Range to x 1k Diode Module Decision If other than giv...

Page 293: ...Method of Replacing The Inverter s Power Transistors and Diode Modules Si39 502A 282 Appendix...

Page 294: ...autions for New Precautions for New Precautions for New Precautions for New Refrigerant R 410A Refrigerant R 410A Refrigerant R 410A Refrigerant R 410A 1 Precautions for New Refrigerant R 410A 284 1 1...

Page 295: ...opic mixture refrigerant 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 R...

Page 296: ...New Refrigerant R 410A 285 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 297: ...ined in high pressure vessels Although those vessels are durable and strong careless handling can cause damage that can lead to unexpected accidents Do not drop vessels let them fall apply impact or r...

Page 298: ...ion differs for R 410A and R 407C Charging cylinder 2Weighting instrument used for HFCs Gas detector 2The same tool can be used for HFCs Vacuum pump pump with reverse flow preventive function 2To use...

Page 299: ...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 300: ...z Maximum 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 100 7 kPa 5 torr 755...

Page 301: ...drogen 5 Refrigerant oil Air compal Specifications 2 Contains synthetic oil therefore it can be used for piping work of every refrigerant cycle 2 Offers high rust resistance and stability over long pe...

Page 302: ...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 coated material for HFC resistance 8 Char...

Page 303: ...liquid refrigerant charging 2 A manifold with separate ports for HFCs and previous refrigerants is equipped as standard accessories Differences 2 Measurement is based on weight to prevent change of m...

Page 304: ...Detailed Explanation of Setting Modes 99 Discharge Pipe Protection Control 71 Display Under Centralized Control Blinks Repeats Double Blink 232 Display Under Centralized Control Blinks Repeats Single...

Page 305: ...s 163 Malfunction of Thermistor R4T for Outdoor Unit Heat Exchanger Deicer 183 Malfunction of Thermostat Sensor in Remote Controller 165 Malfunction of Transmission Between Centralized Controller and...

Page 306: ...ressor Motor Overcurrent Lock 170 STD Compressor Overload Protection 73 Step Control of Outdoor Unit Fans 58 Stopping Operation 66 Symptom based Troubleshooting 136 System is not Set yet 213 T Test Op...

Page 307: ...Si39 502A iv Index...

Page 308: ...ndoor and Outdoor Units Indoor Unit and Remote Controller 209 Improper Combination of Optional Controllers for Centralized Control 217 224 Inverter Compressor Abnormal 189 Inverter Current Abnormal 19...

Page 309: ...eration Mode 47 Refrigerant Overcharged 177 Remote Controller Self Diagnosis Function 146 Remote Controller Service Mode 144 Reverse Phase Open Phase 197 RXYQ8M 10M 46 S Self diagnosis by Wired Remote...

Page 310: ...ct exposure to the sea breeze should be avoided and choose an outdoor unit with anti corrosion treatment Cautions on product corrosion Ask a qualified installer or contractor to install this product D...

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