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Daikin RXYQ96PYDN, Service Manual


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Refrigerant Flow for Each Operation Mode

SiUS34-801A_b

40

VRVIII R-410A Heat Pump 60Hz

Operation of refrigerant regulator

1. Recovery of refrigerant

Surplus refrigerant is recovered to refrigerant regulator by opening of SVL and SVG when the 
indoor unit load is small.

2. Discharge of refrigerant

Refrigerant is discharge from the refrigerant regulator by opening of SVC when the load of the 
outdoor unit is large.

3. Pressure regulating valve (Refrigerant regulator)

The circuit will be closed when SVL, SVO, SVG are all closed. In this case, the increased 
pressure in the refrigerant regulator will be transferred to the liquid refrigerant pipe side, to 
regulate the pressure. 

Suction Pipe

Liquid
Pipe

Equalizing
Pipe

Refrigerant 

Regulator

Right

S1NPH

S2NPL

S1PH

EVM

EVT

Tdi

Tb

Tg

Tsc

Tsh

TL

SVP

20SA

SVE

TS_A

Tf

SVL

Pressure
regulating valve

SVO

SVG

Ta

INV

Pressure
regulating valve

Suction Pipe

Liquid
Pipe

Equalizing
Pipe

Refrigerant 

Regulator

Right

S1NPH

S2NPL

S1PH

EVM

EVT

Tdi

Tb

Tg

Tsc

Tsh

TL

SVP

20SA

SVE

TS_A

Tf

SVL

SVO

SVG

Ta

INV

Summary of Contents for RXYQ96PYDN

Page 1: ...JU RXYQ144 240PYDN RXYQ168 240PTJU REYQ72 96 120PYDN REYQ72 96 120 144PTJU RXYQ144PTJU REYQ144 240PYDN REYQ168 240PTJU SiUS34 801A_b SiUS34 801A Printed in U S A 09 2008 AK Specifications designs and...

Page 2: ...pecifications 11 1 1 Outdoor Units 11 2 Refrigerant Circuit 17 2 1 RXYQ72P 96P 120P 17 2 2 RXYQ144PTJU 18 3 Functional Parts Layout RXYQ72P 96P 120P 21 3 1 RXYQ144PTJU 21 4 Refrigerant Flow for Each O...

Page 3: ...Operation 72 10 1 Installation Process 72 10 2 Procedure and Outline 73 10 3 Operation when Power is Turned On 91 11 Outdoor Unit PC Board Layout 93 12 Field Settings 94 12 1 Field Settings on the Ou...

Page 4: ...9 1 Backup Operation 218 9 2 Demand Operation 218 9 3 Heating Operation Prohibition 218 10 Test Operation 219 10 1 Installation Process 219 10 2 Procedure and Outline 219 10 3 Operation when Power is...

Page 5: ...Motor M1F Lock Overload 340 3 5 A7 Indoor Unit Malfunction of Louver Motor M1S 344 3 6 A9 Indoor Unit Electronic Expansion Valve Malfunction Dust Clogging 346 3 7 AF Indoor Unit Drain Level above Lim...

Page 6: ...Unit Inverter Compressor Starting Failure 400 3 40 LC Outdoor Unit Malfunction of Transmission between Inverter and Control PC Board 403 3 41 P1 Outdoor Unit Inverter Over Ripple Protection 406 3 42...

Page 7: ...Outdoor Unit 474 1 2 Indoor Unit 484 1 3 BS Unit 486 2 Wiring Diagrams for Reference 487 2 1 Outdoor Unit 487 2 2 Field Wiring 497 2 3 Indoor Unit 505 2 4 BS Unit BSVQ36P 60PVJU 509 3 List of Electric...

Page 8: ...serious injury WARNING Indicates a potentially hazardous situation which if not avoided could result in death or serious injury CAUTION Indicates a potentially hazardous situation which if not avoide...

Page 9: ...as leaks during the repair work ventilate the area The refrigerant gas can generate toxic gases when it contacts flames The step up capacitor supplies high voltage electricity to the electrical compon...

Page 10: ...rnal fan rotates at a high speed and can cause injury Do not tilt the unit when removing it The water inside the unit can spill and wet the furniture and floor Be sure to check that the refrigerating...

Page 11: ...rminals Improper connections can cause excessive heat generation or fire When connecting the cable between the indoor and outdoor units make sure that the terminal cover does not lift off or dismount...

Page 12: ...onnection it can cause an electrical shock or fire If the power cable and lead wires have scratches or have deteriorated be sure to replace them Damaged cable and wires can cause an electrical shock e...

Page 13: ...he repair and make sure that the resistance is 1 ohm or higher Faulty insulation can cause an electrical shock Be sure to check the drainage of the indoor unit after the repair Faulty drainage can cau...

Page 14: ...I 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 suit t...

Page 15: ...SiUS34 801A_b xiv...

Page 16: ...1A_b 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 Model Se...

Page 17: ...atibility Symbol Heat Recovery Series BSVQ 36P 60P VJU Type Model Name Power Supply Compatibility Symbol 6 ton 8 ton 10 ton 12 ton 14 ton 16 ton 18 ton 20 ton Heat Pump 230V RXYQ 72P 96P 120P 144P 168...

Page 18: ...cassette unit 2 2 FXZQ07M7 FXZQ09M7 FXZQ12M7 FXZQ18M7 Wall mounted type FXAQ07MVJU FXAQ09MVJU FXAQ12MVJU FXAQ18MVJU FXAQ24MVJU Slim ceiling mounted duct type FXDQ07MVJU FXDQ09MVJU FXDQ12MVJU FXDQ18MV...

Page 19: ...120PYDN RXYQ72P 96P 120PTJU H P 460V H P 230V H P 230V H P 460V H P 230V RXYQ144PTJU RXYQ144P 168P 192P 216P 240PYDN RXYQ168P 192P 216P 240PTJU REYQ72P 96P 120PYDN REYQ72P 96P 120P 144PTJU REYQ144P 1...

Page 20: ...nnection Piping Kit Option 72 96 120 144 6 ton 1 8 ton 1 10 ton 1 12 ton 230V 1 Ton Number of units Multi Unit Module Outdoor Unit Multi Connection Piping Kit Option 72 96 120 12 ton 460V 2 Heat Pump...

Page 21: ...P REYQ144PTJU REYQ144P REYQ168P REYQ192P REYQ216P REYQ240P Outdoor unit 1 REYQ72P REYQ96P REYQ120P REYQ144PTJU REMQ72P REMQ72P REMQ72P REMQ96P REMQ120P Outdoor unit 2 REMQ72P REMQ96P REMQ120P REMQ120P...

Page 22: ...h 12 000 Btu h 18 000 Btu h 24 000 Btu h 30 000 Btu h 36 000 Btu h 48 000 Btu h Equivalent output 0 6 ton 0 8 ton 1 ton 1 5 ton 2 ton 2 5 ton 3 ton 4 ton Capacity of BS unit BSVQ36P BSVQ60P Unit numbe...

Page 23: ...Model Selection SiUS34 801A_b 8 General Information...

Page 24: ...n Valve PI Control 47 6 4 Step Control of Outdoor Unit Fans 47 6 5 Outdoor Unit Fan Control in Cooling Operation 48 6 6 Heat Exchanger Control 49 7 Special Control 50 7 1 Startup Control 50 7 2 Large...

Page 25: ...ating Operation Prohibition 71 10 Test Operation 72 10 1 Installation Process 72 10 2 Procedure and Outline 73 10 3 Operation when Power is Turned On 91 11 Outdoor Unit PC Board Layout 93 12 Field Set...

Page 26: ...Motor Output Number of Units kW 4 7 1 2 2 4 5 1 3 5 4 5 1 Starting Method Soft Start Soft Start Soft Start Fan Type Propeller Fan Propeller Fan Propeller Fan Motor Output kW 0 75 1 0 75 1 0 75 1 Air F...

Page 27: ...tarting Method Soft Start Soft Start Soft Start Fan Type Propeller Fan Propeller Fan Propeller Fan Motor Output kW 0 75 1 0 75 1 0 75 1 0 75 1 0 75 1 0 75 1 Air Flow Rate cfm 6 530 6 530 6 530 6 530 6...

Page 28: ...ions r p m 2900 6300 2 2900 6300 2 Motor Output Number of Units kW 2 2 4 5 1 3 5 4 5 1 3 5 4 5 2 Starting Method Soft Start Soft Start Fan Type Propeller Fan Propeller Fan Motor Output kW 0 75 1 0 75...

Page 29: ...put Number of Units kW 4 7 1 2 2 4 5 1 3 5 4 5 1 Starting Method Soft Start Soft Start Soft Start Fan Type Propeller Fan Propeller Fan Propeller Fan Motor Output kW 0 75 1 0 75 1 0 75 1 Air Flow Rate...

Page 30: ...0 2900 6300 Motor Output Number of Units kW 3 8 3 8 1 4 7 1 2 2 4 5 1 4 7 1 3 5 4 5 1 Starting Method Soft Start Soft Start Soft Start Fan Type Propeller Fan Propeller Fan Propeller Fan Motor Output k...

Page 31: ...Revolutions r p m 2900 6300 2 2900 6300 2 Motor Output Number of Units kW 2 2 4 5 1 3 5 4 5 1 3 5 4 5 2 Starting Method Soft Start Soft Start Fan Type Propeller Fan Propeller Fan Motor Output kW 0 75...

Page 32: ...ncrease in the event of a fault 20 S2PH HP pressure switch For STD compressor 1 22 Pressure regulating valve Liquid pipe Used when pressure increases to prevent any damage on components caused by pres...

Page 33: ...frigerant system diagram Symbol Name Major Function 1 M1C Inverter compressor INV1 Inverter compressor is operated on frequencies between 52Hz and 266Hz by using the inverter The number of operating s...

Page 34: ...r Used when pressure increases to prevent any damage on components caused by pressure increase in transport or storage 26 Subcooling heat exchanger Applies subcooling to liquid refrigerant 27 Refriger...

Page 35: ...e Suction Pipe Stop Valve Stop Valve Stop Valve Gauge Port 50 26 48 8 45 46 18 19 23 33 28 2 41 40 26 39 37 10 35 36 20 12 22 31 3 7 38 17 5 13 25 27 30 16 32 1 21 29 14 15 28 24 9 47 6 4 11 Liquid Pi...

Page 36: ...II R 410A Heat Pump 60Hz 21 GROUND WIRE 16 15 36 37 39 35 12 13 4 6 17 30 14 2 1 3 Functional Parts Layout RXYQ72P 96P 120P Plan Front View Note For reference number refer to page 17 3 1 RXYQ144PTJU R...

Page 37: ...lan Front View Note For reference numbers refer to page 18 19 18 11 23 10 17 33 32 22 12 16 15 13 14 36 46 47 48 41 45 4 9 6 8 2 35 1 31 39 37 30 21 20 38 5 3 7 40 COIL FOR EXPANSION VALVE COIL FOR EX...

Page 38: ...N Theromstat ON Cooling Unit Cooling Unit S1NPH EVM EVT 20SB Tb Tg Tsc TS_A Tsh INVFAN TL SVP 20SA SVE Tf SVO SVL SVG EVJ INV HPS Tdi S1 HPS Tds1 SVT S2NPL Liquid Pipe Stop Valve High Side Equalizer P...

Page 39: ...eration OFF Operation ON Theromstat OFF Operation ON Theromstat ON Heating Unit Heating Unit INV HPS Tdi S1 HPS Tds1 SVT S2NPL Liquid Pipe Stop Valve High Side Equalizer Pipe Stop Valve Low Side Equal...

Page 40: ...Tds1 SVT S2NPL Indoor Unit Cooling Unit Operation ON Theromstat OFF Cooling Unit Cooling Unit Operation ON Theromstat ON Operation OFF Liquid Pipe Stop Valve High Side Equalizer Pipe Stop Valve Low S...

Page 41: ...SVP 20SA SVE Tf SVO SVL SVG EVJ INV HPS Tdi S1 HPS Tds1 SVT S2NPL Liquid Pipe Stop Valve High Side Equalizer Pipe Stop Valve Low Side Equalizer Pipe Stop Valve Gas Pipe Stop Valve Refrigerant Regulat...

Page 42: ...on OFF Operation ON Theromstat OFF Operation ON Theromstat ON Heating Unit Heating Unit S1NPH EVM EVT 20SB Tb Tg Tsc TS_A Tsh INVFAN TL SVP 20SA SVE Tf SVO SVL EVJ INV HPS Tdi S1 HPS Tds1 SVT S2NPL Li...

Page 43: ...SVE TS_A Tf Ta INV1 Suction Pipe Liquid Pipe Equalizing Pipe Refrigerant Regulator Equalizing Pipe Stop Valve Stop Valve Stop Valve Left Right One Body Type High temperature high pressure gas High te...

Page 44: ...OFF Indoor unit Operation Fan ON ON Fan LL ON 192pls 192pls OFF S1NPH S2NPL HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta...

Page 45: ...Pipe S1NPH S2NPL HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta INV2 INV1 High temperature high pressure gas High temperat...

Page 46: ...Equalizer Pipe Fan LL ON S1NPH INV1 HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta S2NPL INV2 High temperature high pressu...

Page 47: ...alizer Pipe 0pls 160 pls 160 pls S1NPH S2NPL HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta INV2 INV1 Stop Valve Fan OFF F...

Page 48: ...uid Pipe 160 pls 160 pls 0pls S1NPH INV1 HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ INV2 HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta S2NPL Fan OFF Fan LL Fan LL H...

Page 49: ...Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refriger...

Page 50: ...id Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant...

Page 51: ...S2NPL Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve R...

Page 52: ...T S2NPL Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve...

Page 53: ...Tds1 SVT S2NPL Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Sto...

Page 54: ...quid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigeran...

Page 55: ...ressure regulating valve Refrigerant regulator The circuit will be closed when SVL SVO SVG are all closed In this case the increased pressure in the refrigerant regulator will be transferred to the li...

Page 56: ...t SVE Y6S Y5S Y10S Main bypass solenoid valve SVP Y5S Y4S Solenoid valve for hot gas SVL Y4S Y3S Refrigerant regulator liquid pipe solenoid valve SVG Y1S Refrigerant regulator gas pipe solenoid valve...

Page 57: ...mode changeover Malfunction Standby Thermostat ON After completion of startup control Cooling startup Heating startup Thermostat ON Operation mode changeover No Yes Mode changeover Operation mode cha...

Page 58: ...pansion valve Subcooling EVT Y3E PI control PI control Electronic expansion valve Refrigerant charge EVJ Y2E 80 pls 80 pls Four way valve Heat exchanger switch 20SA Y3S OFF Outdoor unit heat exchanger...

Page 59: ...r capacity to adjust Te to achieve target value TeS Te Low pressure equivalent saturation temperature F Te set value Make this setting while in Setting mode 2 TeS Target Te value Varies depending on T...

Page 60: ...ON 27 96Hz ON 28 104Hz ON 29 116Hz ON 30 124Hz ON 31 132Hz ON 32 144Hz ON 33 158Hz ON 34 176Hz ON 35 188Hz ON 36 202Hz ON 37 210Hz ON Initial step RXYQ144PTJU 12 ton STEP No unit 1 INV unit 2 INV 1 52...

Page 61: ...166Hz 166Hz 19 176Hz 176Hz 20 80Hz 80Hz ON1 21 88Hz 88Hz ON1 22 96Hz 96Hz ON1 23 104Hz 104Hz ON1 24 116Hz 116Hz ON1 25 124Hz 124Hz ON1 26 132Hz 132Hz ON1 27 88Hz 88Hz ON2 28 96Hz 96Hz ON2 29 104Hz 10...

Page 62: ...and close the valve after the completion of refrigerant charge For normal operation fully open this electronic expansion valve 6 4 Step Control of Outdoor Unit Fans Used to control the revolutions of...

Page 63: ...re control using the outdoor unit fan to retain appropriate liquid pressure thus ensuring refrigerant circulation rate to be supplied to indoor units Hold the current step on outdoor unit fan 1 step o...

Page 64: ...s if there is no step for the destination of transition that step will be skipped 1 Condenser 2 Condenser B1 Outdoor unit 1 2 Evaporator Outdoor unit 1 Condenser 2 Condenser Outdoor unit 1 Condenser 2...

Page 65: ...Pc Pe 56 55psi Compressor 2 M2C M2C Outdoor unit fan 1 M1F M1F STEP4 Ta 68 F OFF Ta 68 F STEP4 1step 15 sec When Pc_max 313 2psi 1step 15 sec When Pc_max 256 65psi Outdoor unit fan 2 M2F Electronic e...

Page 66: ...trol 20SA OFF 1375 pls Y3E Electronic expansion valve Subcooling EVT Y2E Y3E 0 pls 0 pls 0 pls Y5E Electronic expansion valve Refrigerant charge EVJ Y4E Y2E 80 pls 80 pls 80 pls Four way valve Heat ex...

Page 67: ...s 7 3 Oil Return Operation Used to recover refrigerant oil that flows out from the compressor to the system side by conducting the oil return operation This prevents the compressor from running out of...

Page 68: ...umber of compressors that were used before oil return operation Compressor 2 M2C M2C Outdoor unit fan 1 M1F M1F Cooling fan control Cooling fan control Outdoor unit fan 2 M2F Four way valve for heat e...

Page 69: ...oad that was applied before oil return operation When current circulation rate circulation rate required for oil return operation turn ON the STD compressor every 10 seconds up to 3 units at maximum C...

Page 70: ...the operation listed in the table above Slave units Operating units conduct the operation listed in the table above Non operating units conduct the operation listed in the table above after the Oil r...

Page 71: ...ation Operation after defrosting RXYQ 144PTJU For any model other than that shown on the left Compressor 1 M1C M1C 232Hz ON 232Hz ON Compressor 2 M2C M2C Outdoor unit fan M1F M1F Step 8 M2F Four way v...

Page 72: ...ompressor 1 M1C 210Hz ON 210Hz ON Compressor 2 M2C Outdoor unit fan 1 M1F Four way valve for heat exchanger selection 20SA Y3S OFF OFF Four way valve for high and low pressure gas pipe selection 20SB...

Page 73: ...ectronic expansion valve main EVM Y1E Y1E PI control PI control Y3E Electronic expansion valve subcooling EVT Y2E Y3E SH control 0pls Y5E Electronic expansion valve refilling refrigerant EVJ Y4E Y2E 8...

Page 74: ...Y1S Y1S OFF OFF Solenoid valve Refrigerant regulator exhaust pipe SVO Y7S Y7S OFF OFF Solenoid valve Refrigerant regulator discharge pipe SVT Y6S Y8S OFF OFF Ending conditions 5 min Pe_min 71 05psi Pc...

Page 75: ...alve Refrigerant regulator discharge pipe SVT Y6S Y8S OFF OFF Ending conditions 3 min Pe_min 36 25psi Pc_max 453 85psi Master unit Tdi 230 F Master unit Tp 284 F Actuator Symbol Elect symbol Operation...

Page 76: ...C M2C OFF Outdoor unit fan1 M1F M1F OFF Outdoor unit fan2 M2F OFF Electronic expansion valve Main EVM Y1E Y1E 0 pls Y3E Electronic expansion valve Subcooling EVT Y2E Y3E 0 pls Y5E Electronic expansion...

Page 77: ...OFF and the malfunction will be determined according to the number of retry times Item Judgment Criteria Malfunction Code 1 Abnormal low pressure level 10 15psi E4 2 Abnormal high pressure level 580ps...

Page 78: ...s the maximum value within the system Normal Operation Pc_max 503 15psi Pc_max 514 75psi Pc_max 503 15psi Pc_max 469 8psi Pc_max 527 8psi Upper limit compressor step max Max Step When occurring 3 time...

Page 79: ...ue within the system Pc_max 426 3psi Pc_max 495 9psi Pc_max 479 95psi Pc_max 479 95psi Pc_max 527 8psi When occurring 3 times within 30 min HPS is activated without high pressure standby and the malfu...

Page 80: ...e minimum value within the system Pe_min 49 3psi Pe_min 56 55psi Pe_min 42 05psi Pe_min 36 25psi Pe_min 10 15psi Pe_min 21 75psi When occurring 4 times within 30 min the malfunction code E4 is display...

Page 81: ...al operation Pe_min 24 65psi See 1 Pe_min 39 15psi Pe_min 24 65psi Pe_min 29psi A lapse of 15 sec Pe_min 24 65psi A lapse of 10 sec Pe_min 18 85psi Pe 10 15psi Restart standby up to 3 times within a p...

Page 82: ...or OR HTdi 230 F A lapse of 20 sec HTdi 239 F A lapse of 30 sec Matching of frequency HTdi 266 F HTdi 248 F continues for a period of 90 sec OR HTdi 275 F HTdi 248 F continues for a period Stop due to...

Page 83: ...Perform the following control of integrated for each INV compressor Normal operation During the control of inverter protection Inverter current value 14 7A 460V 26 5A 230V INV upper limit frequency m...

Page 84: ...During the control of fin temperature protection Tfin 177 8 F INV upper limit frequency max 210Hz Tfin 183 2 F INV Comp upper limit step 1 step up Tfin 177 8 F continues for 3 minutes Current status...

Page 85: ...in 90 min the malfunction code E6 is displayed If the power supply is reset while in operation prohibition mode the prohibition timer will continue counting when the power supply is turned ON 460 34 2...

Page 86: ...of operation Disable the compressor with the operation disable setting made from operating and only operate other compressors 9 2 Demand Operation In order to save the power consumption the capacity...

Page 87: ...in the order of the steps shown 3 Selection of Location 4 Inspecting and Handling the Unit 5 Placing the Unit 7 Field Wiring 6 Refrigerant Piping 8 Airtight Test and Vacuum Drying 9 Pipe Insulation 1...

Page 88: ...on 1 2 Do not use a megger tester for other circuits than 200V or 240V circuit 1 Measures to be taken against decreased insulation resistance in the compressor If the compressor is left to stand for a...

Page 89: ...ng size at 7 8 Total length ft of liquid piping size at 5 8 Total length ft of liquid piping size at 3 8 Total length ft of liquid piping size at 3 4 Total length ft of liquid piping size at 1 2 Total...

Page 90: ...us wirings Check for failure to open stop valves Check for excessive refrigerant refilling Automatic judgment of piping length Before starting the normal operation after the completion of check operat...

Page 91: ...and insure sufficient pressure resistance always use the special tools dedicated for R 410A Use charge hose that has a pushing stick for connecting to service port of shutoff valves or refrigerant cha...

Page 92: ...oisture enters the piping use the following instructions For example if working in a rainy season takes long enough that condensation may form on the inside of the pipes rain might enter the pipes dur...

Page 93: ...holes we recommend you remove burrs in the knockout holes See figure 27 and paint the edges and areas around the edges using the repair paint 10 2 5 Additional Refrigerant Charge and Check Operation...

Page 94: ...it may cause an explosion or accident R 410A is a mixed refrigerant so charging it as a gas will cause the refrigerant composition to change which may prevent normal operation Other tanks Stand the ta...

Page 95: ...shaft counterclockwise with the hexagon wrench 2 Turn it until the shaft stops 3 Make sure to tighten the cap securely For the tightening torque refer to the table Tightening Torque To close 1 Remove...

Page 96: ...8mm 16 6 20 3 1 LED display h OFF i ON j Blinking Uncertain LED display H1P H2P H3P H4P H5P H6P H7P 1 Press the MODE button BS1 once at Setting Mode 1 H1P off and set the MON ITOR MODE H1P Blinking j...

Page 97: ...refrigerant charging operation while working on the BS and indoor unit When opening the front panel be cautious of the rotating fan After the outside unit stops operating the fan may continue to rotat...

Page 98: ...o the failure of Judgment of piping length Check operation must be performed for each refrigerant piping system Checking is impossible if plural systems are being done at once The individual problems...

Page 99: ...ling mode or heating mode by the following temperature condition When charging in cooling mode the system will stop operation when the required amount of refrigerant is charged During charging in heat...

Page 100: ...e if the LED display is not as below Measuring device R 410A tank with siphon Charge hose High side equalizer pipe shutoff valve Valve C Outside unit A Outside unit B Valve A Indoor unit Valve B Gas p...

Page 101: ...m stops operating 9 When the compressor stops working the fan may continue rotation close valve A immediately 8 Check that the LED displays are as below and the remote controller display shows P9 code...

Page 102: ...overcharge Remote controller cooling mode malfunction code Remote controller heating mode malfunction code 6 After completing the additional refrigerant charging record the charging amount on the acc...

Page 103: ...s as needed using the push button BS1 BS5 on the outside unit PC board A1P with the power on See 10 2 6 Onsite Settings 3 Perform the check operation following the Check Operation Method of the Servic...

Page 104: ...ing work Wiring work Air tight test Vacuum drying Additional refrigerant charge Check operation Check that all work for the BS and indoor units is finished and that it is safe to operate Malfunction c...

Page 105: ...following 1 Make sure the indoor and outside units are operating normally 2 Operate each indoor unit one by one and make sure the corresponding outside unit is also operating 3 Check to see if cold o...

Page 106: ...bel on the back side of the front panel Record the installation date Record the installation date on the accessory REQUEST FOR THE INDICATION label in accordance with the IEC60335 2 40 And attach the...

Page 107: ...e 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 ON Can also be set during operation described above Indoor u...

Page 108: ...display LED LEDs display mode according to the setting 3 Mode setting switch Used to change mode 4 Local setting switch Used to make field settings MODE SET RETURN TEST RESET BS1 BS2 BS3 BS4 BS5 H1P H...

Page 109: ...setting to ON with No 29 106 111 3 Setting of demand operation 1 Used to place limits on the compressor operating frequency to control the upper limit of power consumption 1 Mode 1 of Demand 1 60 or...

Page 110: ...failure used to prohibit the operation of outdoor unit s concerned and to conduct emergency operation of the system only with operable or outdoor unit s Make this setting while in Setting mode 2 For s...

Page 111: ...pare PC board be sure to make settings shown below When you change the main PC board A1P to spare parts PC board please carry out the following setting DIP Switch Detail DS No Item Contents DS1 2 Powe...

Page 112: ...DS2 1 DS2 2 and DS2 3 to ON Setting method represents the positions of switches DS1DS2 LED EB 1 2 3 4 DS1 1 2 3 4 DS2 Factory Setting represents the positions of switches ON OFF 1 2 3 4 1 2 3 4 ON OF...

Page 113: ...Mode changing procedure 1 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 Pushbutton switches Used to change the setting mode Used for o...

Page 114: ...button Press BS3 RETURN button Setting item selection SET button Setting mode 2 Set Select mode with BS2 SET button in each selection step Setting condition selection SET button Setting condition Cont...

Page 115: ...set to any mode other than that push the MODE BS1 button to set the system to Setting mode 1 Check the system for each condition through LED displays Refer to information in table on the right Pushing...

Page 116: ...n in a simple way The operating time is based on Starting set and Ending set 25 Setting of external low noise level Sets low noise level when the low noise signal is input from outside 26 Night time l...

Page 117: ...tat OFF unit or non heating operation unit Make this setting to shorten the BS Cool Heat selection control time However make the setting pay careful attention to the following If the refrigerant pipin...

Page 118: ...7 7 8 7 7 7 Low Level L 8777778 Normal Level M 8777787 HighN 8777788 HighO 8777877 HighP Level H 8777878 HighQ 8777887 HighR 8777888 9 Tc setting 8 7 7 8 7 7 8 Low 8777778 Normal factory setting 87777...

Page 119: ...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 demand 8777778 70 demand 8777787 80 demand 8777877 32 Normal demand setting...

Page 120: ...ected zone units Fixed to 0 9 7 7 7 8 8 8 8 Number of outdoor units 2 9 7 7 8 7 7 7 11 Number of zone units 9 7 7 8 7 8 8 Lower 6 digits 12 Number of terminal units 3 9 7 7 8 8 7 7 Lower 4 digits uppe...

Page 121: ...9 H 9 7 7 7 7 7 8 Data such as addresses and number of units is expressed as binary numbers the two ways of expressing are as follows The No 1 cool heat unified address is expressed as a binary numbe...

Page 122: ...Level 3 for set item No 22 Setting of nighttime low noise level 2 If necessary while in Setting mode 2 select the setting condition i e 20 00 22 00 or 24 00 for set item No 26 Setting of start time of...

Page 123: ...b target Note1 Above values are reference only measured in silent room Note2 Above values are for 1 module only Operation sound of level 2 Operation sound of level 1 Operation sound of level 3 Operati...

Page 124: ...tting of constant demand to ON 2 While in Setting mode 2 select the set item No 30 Setting of Demand 1 level and then set the setting condition to targeted mode Description of setting Setting procedur...

Page 125: ...etting When the Normal demand setting is 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 Po...

Page 126: ...one time Returns to the setting mode 1 and turns H1P off ON OFF 9 Blink Setting No Setting contents Setting No indication Setting No indication Setting contents Setting contents indication Initial set...

Page 127: ...erant recovery operation Collect the refrigerant using a refrigerant recovery unit See the instruction attached to the refrigerant recovery unit for more detal Press Mode button BS1 once and reset Set...

Page 128: ...mote controller for 4 seconds or more when the outdoor unit stops because of malfunction state Details of operation Unit stopping Press the TEST button for 5 seconds 10 sec to 10 minutes LED display H...

Page 129: ...n which this emergency operation is possible O Emergency operation by setting outdoor unit PC board In malfunction stop state of the outdoor unit due to defective compressor by setting the relevant co...

Page 130: ...T button BS2 38 times 8811881 3 Press the RETURN button BS3 once 8111119 Factory setting 4 Press the SET button BS2 once 8111191 5 Press the RETURN button BS3 twice 8111111 6 Press the MODE button BS1...

Page 131: ...11111 6 Press the MODE button BS1 once 1181111 LED display 8 ON 1 OFF 9 Blink Step H1P H7P 1 Press and hold the MODE button BS1 for 5 sec or more 8111111 2 Press the SET button BS2 38 times 8811881 3...

Page 132: ...tdoor unit 2 operation of setting mode 2 to OFF LED display 8 ON 1 OFF 9 Blink H1P H7P H8P Outdoor unit 1 1181111 8 Outdoor unit 2 1111111 9 LED display 8 ON 1 OFF 9 Blink Step H1P H7P 1 Press and hol...

Page 133: ...Field Settings SiUS34 801A_b 118 VRVIII R 410A Heat Pump 60Hz...

Page 134: ...eneral 185 5 1 Symbol 185 5 2 Operation Mode 187 6 Basic Control 188 6 1 Normal Operation 188 6 2 Compressor PI Control 189 6 3 Electronic Expansion Valve PI Control 193 6 4 Step Control of Outdoor Un...

Page 135: ...9 1 Backup Operation 218 9 2 Demand Operation 218 9 3 Heating Operation Prohibition 218 10 Test Operation 219 10 1 Installation Process 219 10 2 Procedure and Outline 219 10 3 Operation when Power is...

Page 136: ...Start Soft Start Soft Start Fan Type Propeller Fan Propeller Fan Propeller Fan Motor Output kW 0 35 2 0 35 2 0 35 2 Air Flow Rate cfm 6 700 6 700 7 410 Drive Direct Drive Direct Drive Direct Drive Co...

Page 137: ...arting Method Soft Start Soft Start Soft Start Fan Type Propeller Fan Propeller Fan Propeller Fan Motor Output kW 0 75 1 0 75 1 0 75 1 0 75 1 0 75 1 0 75 1 Air Flow Rate cfm 6 350 6 350 6 350 6 530 6...

Page 138: ...Revolutions r p m 2900 6300 2 2900 6300 2 Motor Output Number of Units kW 2 2 4 5 1 3 5 4 5 1 3 5 4 5 2 Starting Method Soft Start Soft Start Fan Type Propeller Fan Propeller Fan Motor Output kW 0 75...

Page 139: ...oft Start Soft Start Soft Start Fan Type Propeller Fan Propeller Fan Propeller Fan Motor Output kW 0 35 2 0 35 2 0 35 2 Air Flow Rate cfm 6 700 6 700 7 410 Drive Direct Drive Direct Drive Direct Drive...

Page 140: ...6300 Motor Output Number of Units kW 3 8 3 8 7 1 1 8 4 3 9 1 7 1 1 8 4 6 1 1 Starting Method Direct on Line Soft Start Soft Start Fan Type Propeller Fan Propeller Fan Propeller Fan Motor Output kW 0 7...

Page 141: ...20T Brazing Connection High and Low Pressure Gas Pipe 3 in mm 1 1 8 28 6 mm C1220T Brazing Connection 1 1 8 28 6 mm C1220T Brazing Connection Pressure Equalizer Tube in mm 3 4 19 1 mm C1220T Brazing C...

Page 142: ...ttached pipe and the field pipe must be brazed Connection Range for BS Unit Mass Lbs kg 26 11 8 kg 26 11 8 kg Standard Accessories Installation Manual Attached Pipe Insulation Pipe Cover Clamps Instal...

Page 143: ...tch For INV Functions when pressure increases to stop operation and avoid high pressure increase in the event of a fault 23 S2PH HP pressure switch For STD 24 Pressure regulating valve Liquid pipe Use...

Page 144: ...S1PH Suction Pipe Dual Pressure Gas Pipe Liquid Pipe Subcool Heat Exchanger 2 Subcool Heat Exchanger 1 Heat Exchanger 2 Heat Exchanger 1 STD S2PH Stop Valve Stop Valve Stop Valve Gauge Port Left Gauge...

Page 145: ...s when pressure increases to stop operation and avoid high pressure increase in the event of a fault 24 Pressure regulating valve Liquid pipe Used when pressure increases to prevent any damage on comp...

Page 146: ...ipe Suction Pipe Stop Valve Stop Valve Stop Valve Gauge Port 50 26 48 8 45 46 18 19 23 33 28 2 41 40 26 39 37 10 35 36 20 12 22 31 3 7 38 17 5 13 25 27 30 16 32 1 21 29 14 15 28 24 9 47 6 4 11 Liquid...

Page 147: ...ressure increase in the event of a fault 22 Pressure regulating valve Liquid pipe Used when pressure increases to prevent any damage on components caused by pressure increase in transport or storage 2...

Page 148: ...very 60Hz 133 REMQ72PYDN PTJU S1NPH INV S1PH 7 S2NPL Stop Valve Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Suction Pipe Gauge Port 22 15 36 35 37 23 11 38 24 3...

Page 149: ...ressure increase in the event of a fault 20 S2PH HP pressure switch For STD compressor 1 22 Pressure regulating valve Liquid pipe Used when pressure increases to prevent any damage on components cause...

Page 150: ...35 REMQ96 120PYDN PTJU 40 7 9 6 Stop Valve Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Suction Pipe Gauge Port 22 15 36 35 37 23 11 38 24 39 4 10 17 16 8 31 26...

Page 151: ...ansion valve EVHS Y2E Opens while in heating operation or all indoor units are in cooling operation Max 480pls 4 Electronic expansion valve EVLS Y3E Opens while in cooling operation Max 480pls 5 Elect...

Page 152: ...EYQ72P 96P 120P Plan Front View Note For reference numbers refer to page 128 19 18 11 23 10 17 34 33 12 22 16 13 14 15 4 36 46 47 48 42 45 6 8 9 2 40 7 3 5 38 20 21 31 32 37 39 1 35 COIL FOR EXPANSION...

Page 153: ...34 801A_b 138 VRVIII R 410A Heat Recovery 60Hz 3 2 REYQ144PTJU Plan Front View Note For reference numbers refer to page 130 19 18 11 23 10 17 33 32 22 12 16 15 13 14 36 46 47 48 41 45 4 9 6 8 2 35 1 3...

Page 154: ...rts Layout VRVIII R 410A Heat Recovery 60Hz 139 3 3 REMQ72P Plan Front View Note For reference numbers refer to page 132 REFRIGERANT REGULATOR 11 7 9 25 19 32 31 10 8 18 40 38 16 15 36 37 39 35 12 13...

Page 155: ...1A_b 140 VRVIII R 410A Heat Recovery 60Hz 3 4 REMQ96P 120P Plan Front View Note For reference number refer to page 134 REFRIGERANT REGULATOR 11 7 9 25 20 19 33 31 31 10 8 18 40 38 ZGROUND WIRE 16 15 3...

Page 156: ...f Ta INV Suction Pipe Liquid Pipe Equalizing Pipe Refrigerant Regulator Equalizing Pipe Stop Valve Stop Valve Stop Valve Left Right One Body Type High temperature high pressure gas High temperature hi...

Page 157: ...s Pipe Liquid Pipe BS Unit Suction Pipe Fan OFF Indoor unit Operation Fan ON ON Fan LL ON 192pls 192pls OFF S1NPH S2NPL HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS E...

Page 158: ...Unit Dual Pressure Gas Pipe Liquid Pipe BS Unit Suction Pipe 192pls S1NPH S2NPL INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ STD HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA S...

Page 159: ...essure Gas Pipe Liquid Pipe BS Unit Suction Pipe S1NPH S2NPL HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta STD INV High t...

Page 160: ...EVH EVL EVHS EVLS EVSC Indoor Unit Heating Unit BS Unit Suction Pipe Fan LL ON S1NPH INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA S...

Page 161: ...uid Pipe BS Unit Suction Pipe EVH EVL EVHS EVLS EVSC Heating Unit S1NPH S2NPL INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A...

Page 162: ...Pipe Dual Pressure Gas Pipe Liquid Pipe Liquid Pipe BS Unit BS Unit Suction Pipe Suction Pipe 0pls 160 pls S1NPH S2NPL HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS E...

Page 163: ...ure Gas Pipe Dual Pressure Gas Pipe Liquid Pipe Liquid Pipe BS Unit BS Unit Suction Pipe Suction Pipe 160 pls 0pls S1NPH INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ...

Page 164: ...iquid Pipe Equalizing Pipe Refrigerant Regulator Equalizing Pipe Stop Valve Stop Valve Stop Valve Left Right One Body Type High temperature high pressure gas High temperature high pressure liquid Low...

Page 165: ...ipe Liquid Pipe BS Unit Suction Pipe Fan OFF Indoor unit Operation Fan ON ON Fan LL ON 192pls 192pls OFF S1NPH S2NPL HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM...

Page 166: ...it Dual Pressure Gas Pipe Liquid Pipe BS Unit Suction Pipe 192pls S1NPH S2NPL INV1 HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ INV2 HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SV...

Page 167: ...ure Gas Pipe Liquid Pipe BS Unit Suction Pipe S1NPH S2NPL HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta INV2 INV1 High te...

Page 168: ...EVL EVHS EVLS EVSC Indoor Unit Heating Unit BS Unit Suction Pipe Fan LL ON S1NPH INV1 HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE...

Page 169: ...Pipe BS Unit Suction Pipe EVH EVL EVHS EVLS EVSC Heating Unit S1NPH S2NPL INV1 HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf...

Page 170: ...pe Dual Pressure Gas Pipe Liquid Pipe Liquid Pipe BS Unit BS Unit Suction Pipe Suction Pipe 0pls 160 pls S1NPH S2NPL HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM...

Page 171: ...Gas Pipe Dual Pressure Gas Pipe Liquid Pipe Liquid Pipe BS Unit BS Unit Suction Pipe Suction Pipe 160 pls 0pls S1NPH INV1 HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ INV...

Page 172: ...P 20SA SVE Tf SVT SVO SVL SVG EVJ EVM EVT Tb Tg Tsc TS_A Tsh INVFAN TL 20SA SVE Tf EVJ SVO SVL SVG SVP S2NPL S1NPH Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual Pressu...

Page 173: ...Theromstat ON EVH EVL EVHS EVLS EVSC Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit INV HPS Tdi SVT S2NPL Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual Pressure Gas...

Page 174: ...peration ON Theromstat ON Operation ON Theromstat OFF EVH EVL EVHS EVLS EVSC Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve...

Page 175: ...OFF EVH EVL EVHS EVLS EVSC Cooling Unit EVH EVL EVHS EVLS EVSC Cooling Unit Operation ON Theromstat ON Operation OFF Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual Pres...

Page 176: ...sure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High temperature high pressure gas...

Page 177: ...heromstat ON Operation ON Theromstat OFF Operation ON Theromstat ON EVH EVL EVHS EVLS EVSC Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit 224pls Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suc...

Page 178: ...e Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High temperature high pressure gas Hig...

Page 179: ...e Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High temperature high pressure gas Hig...

Page 180: ...SVE Tf SVT SVO SVL SVG EVJ INV HPS EVM EVT Tdi Tb Tg Tsc TS_A Tsh INVFAN TL S1 HPS Tds1 20SA SVE Tf EVJ SVO SVL SVG SVP SVT S2NPL S1NPH S2NPL Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction...

Page 181: ...tion OFF Operation ON Theromstat OFF Operation ON Theromstat ON EVH EVL EVHS EVLS EVSC Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe S...

Page 182: ...Operation ON Theromstat ON Operation ON Theromstat ON Operation ON Theromstat OFF EVH EVL EVHS EVLS EVSC Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit Liquid Pipe Stop Valve Equalizing Pipe Stop V...

Page 183: ...nit Operation ON Theromstat OFF EVH EVL EVHS EVLS EVSC Cooling Unit EVH EVL EVHS EVLS EVSC Cooling Unit Operation ON Theromstat ON Operation OFF Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Sucti...

Page 184: ...on Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High te...

Page 185: ...t Cooling Unit Operation ON Theromstat ON Operation ON Theromstat OFF Operation ON Theromstat ON EVH EVL EVHS EVLS EVSC Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit 224pls Liquid Pipe Stop Valve E...

Page 186: ...Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High temp...

Page 187: ...Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High tempe...

Page 188: ...EVJ INV HPS EVM EVT Tdi Tb Tg Tsc TS_A Tsh INVFAN TL S1 HPS Tds1 20SA SVE Tf EVJ SVO SVL SVG SVP SVT S1NPH S2NPL Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual Pressur...

Page 189: ...tat OFF Operation ON Theromstat ON EVH EVL EVHS EVLS EVSC Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual Pressure Gas P...

Page 190: ...n ON Theromstat OFF EVH EVL EVHS EVLS EVSC Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit INV HPS Tdi S1 HPS Tds1 SVT S2NPL Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve...

Page 191: ...Unit EVH EVL EVHS EVLS EVSC Cooling Unit Operation ON Theromstat ON Operation OFF INV HPS Tdi S1 HPS Tds1 SVT S2NPL Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual Press...

Page 192: ...ure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High temperature high pressure gas H...

Page 193: ...heromstat ON Operation ON Theromstat OFF Operation ON Theromstat ON EVH EVL EVHS EVLS EVSC Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit 224pls Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suc...

Page 194: ...e Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High temperature high pressure gas Hig...

Page 195: ...e Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High temperature high pressure gas Hig...

Page 196: ...f refrigerant Discharge refrigerant from refrigerant regulator by opening of SVC when the load of the outdoor unit is large Suction Pipe Liquid Pipe Equalizing Pipe Refrigerant Regulator Right S1NPH S...

Page 197: ...Heat Recovery 60Hz 3 Pressure regulating valve Refrigerant regulator The circuit will be closed when SVL SVO SVG are all closed In this case the increased pressure in the refrigerant regulator will be...

Page 198: ...the system pressure Finally EVH and EVHS are opened and the electric expansion valve of the indoor unit is opened to start the operation as a heating circuit In cooling operation In equalization To h...

Page 199: ...EVL and EVLS are opened and the electric expansion valve of the indoor unit is opened to start the operation as a cooling circuit In heating operation In equalization To cooling operation BS Unit Indo...

Page 200: ...ion valve for subcooling heat exchanger Y5E Subcooling2 EVJ Y4E Y2E Electronic expansion valve at the refrigerant charge port HTDi Value of INV compressor discharge pipe temperature compensated with o...

Page 201: ...15T Liquid pipe2 Tsh R5T Gas pipe1 R5T Temperature detected with the subcooling heat exchanger outlet thermistor R13T Gas pipe2 Tl R6T Liquid pipe1 R6T Liquid pipe temperature detected with the liquid...

Page 202: ...ion mode changeover Malfunction Standby Thermostat ON After completion of startup control Cooling startup Heating startup Thermostat ON Operation mode changeover No Yes Mode changeover Operation mode...

Page 203: ...Y3E Electronic expansion valve Subcooling EVT Y2E Y3E PI control PI control PI control Y5E Electronic expansion valve Refrigerant charge EVJ Y4E Y2E 80 pls 80 pls 80 pls Four way valve Heat exchanger...

Page 204: ...c expansion valve EVL Y5E 760 pls fully opened 0 pls Electronic expansion valve EVHS Y2E 480 pls fully opened 480 pls fully opened Electronic expansion valve EVLS Y3E 480 pls fully opened 0 pls Electr...

Page 205: ...bject to information in Operating Priority and Rotation of REYQ72P 96P 120P STD1 INV No 2 No 1 INV Inverter compressor STD1 Standard compressor 1 STD2 Standard compressor 2 Each compressor operates in...

Page 206: ...16 166Hz 17 176Hz 18 188Hz 19 202Hz 20 210Hz 21 52Hz ON 22 62Hz ON 23 68Hz ON 24 74Hz ON 25 80Hz ON 26 88Hz ON 27 96Hz ON 28 104Hz ON 29 116Hz ON 30 124Hz ON 31 132Hz ON 32 144Hz ON 33 158Hz ON 34 17...

Page 207: ...Hz 19 96Hz 96Hz 20 104Hz 104Hz 21 110Hz 110Hz 22 116Hz 116Hz 23 124Hz 124Hz 24 132Hz 132Hz 25 52Hz 52Hz ON 26 62Hz 62Hz ON 27 68Hz 68Hz ON 28 74Hz 74Hz ON 29 80Hz 80Hz ON 30 88Hz 88Hz ON 31 96Hz 96Hz...

Page 208: ...Hz 62Hz 4 66Hz 66Hz 5 70Hz 70Hz 6 74Hz 74Hz 7 80Hz 80Hz 8 88Hz 88Hz 9 92Hz 92Hz 10 96Hz 96Hz 11 104Hz 104Hz 12 110Hz 110Hz 13 116Hz 116Hz 14 124Hz 124Hz 15 132Hz 132Hz 16 144Hz 144Hz 17 158Hz 158Hz 18...

Page 209: ...which vary when the system is set to high static pressure or capacity precedence mode 6 5 Outdoor Unit Fan Control in Cooling Operation While in cooling operation if the outdoor temperature is low thi...

Page 210: ...p on outdoor unit fan PI control PI control Lapse of 20 sec Lapse of 20 sec Fan step 7 Pc 446 6psi Pc 461 1psi Fan step 8 Pc 475 6psi Fan step 9 PI control PI control PI control Note 1 GR is a numeric...

Page 211: ...nd current evaporating temperature Note 2 On the system with two outdoor units if there is no step for the destination of transition that step will be skipped Outdoor unit 1 2 Condenser Condenser Outd...

Page 212: ...2 M2C M2C Outdoor unit fan 1 M1F M1F STEP4 Ta 68 F OFF Ta 68 F STEP4 1step 15 sec When Pc_max 313 2 psi 1step 15 sec When Pc_max 256 5 psi Outdoor unit fan 2 M2F M2F Electronic expansion valve Main E...

Page 213: ...75 pls Electronic expansion valve Subcooling EVT Y2E Y5E Y3E 0 pls 0 pls 0 pls Electronic expansion valve Refrigerant charge EVJ Y4E Y2E 80 pls 80 pls 80 pls Four way valve Heat exchanger switch 20SA...

Page 214: ...il Return Operation This function is used to recover refrigerant oil that flows out from the compressor to the system side by conducting oil return operation in order to prevent the compressor from ru...

Page 215: ...were used before oil return operation Compressor 2 M2C M2C Outdoor unit fan 1 M1F M1F Cooling fan control Cooling fan control Outdoor unit fan 2 M2F M2F Four way valve for heat exchanger selection 20...

Page 216: ...setting Motorized valve Thermo ON unit Normal opening degree Unit not in operation 192pls Thermo OFF unit Normal opening degree for forced thermostat ON Cooling BS unit actuator Elect symbol Oil retur...

Page 217: ...rculation rate required for oil return operation turn ON the STD compressor every 10 seconds up to 3 units at maximum Compressor 2 M2C M2C Outdoor unit fan 1 M1F M1F When outdoor unit heat exchanger i...

Page 218: ...Elect symbol Oil return operation Electronic expansion valve EVH Y4E 0pls Electronic expansion valve EVL Y5E 760pls Electronic expansion valve EVHS Y2E 0pls 60pls when Pc_max 413 25psi Electronic exp...

Page 219: ...alve gas discharge pipe of refrigerant regulator SVG Y1S Y1S 0pls 0pls Solenoid valve drain pipe of refrigerant regulator SVO Y7S Y7S 0pls 0pls Solenoid valve discharge pipe of refrigerant regulator S...

Page 220: ...1S 0pls 0pls Solenoid valve drain pipe of refrigerant regulator SVO Y7S Y7S 0pls 0pls Solenoid valve discharge pipe of refrigerant regulator SVT Y6S Y8S 0pls 0pls Cooling indoor unit actuator Defrost...

Page 221: ...M2C M2C Outdoor unit fan 1 M1F M1F Fan control Fan control Outdoor unit fan 2 M2F M2F Electronic expansion valve Main EVM Y1E Y3E Y1E 1375 pls 1375 pls Electronic expansion valve Subcooling EVT Y2E Y5...

Page 222: ...charge EVJ Y4E Y2E 80 pls 80 pls Four way valve Heat exchanger switch 20SA Y2S Y9S Y3S When outdoor heat exchanger is evaporator ON When outdoor heat exchanger is condenser OFF When outdoor heat exch...

Page 223: ...enoid valve Hot gas SVP Y4S Y5S OFF Solenoid valve Refrigerant regulator liquid pipe SVL Y3S Y4S OFF Solenoid valve Refrigerant regulator gas vent pipe SVG Y1S Y1S OFF Solenoid valve Refrigerant regul...

Page 224: ...r liquid pipe SVL Y3S Y4S OFF Solenoid valve Refrigerant regulator gas vent pipe SVG Y1S Y1S OFF Solenoid valve Refrigerant regulator exhaust pipe SVO Y7S Y7S OFF Solenoid valve Refrigerant regulator...

Page 225: ...he system Normal Operation Pc_max 503 15psi Pc_max 514 75psi Pc_max 503 15psi Pc_max 469 8 psi Pc_max 527 8psi Upper limit compressor step max Max Step When occurring 3 times within 30 min HPS is acti...

Page 226: ...to protect compressors against the transient decrease of low pressure In cooling operation Because of common low pressure the following control is performed in the system Pc_max 426 3psi Pc_max 495 9p...

Page 227: ...min 21 75psi When occurring 4 times within 30 min the malfunction code E4 is output Normal Operation During the control of low pressure protection Low pressure standby Single type Compressor step of t...

Page 228: ...ressor of single unit as well as multi units Pe_min 10 15psi Pe_min 24 65psi Pe_min 33 35psi Pe_min 24 65psi Pe_min 18 85psi Pe_min 39 15psi When occurring 4 times within 30 min the malfunction code E...

Page 229: ...239 F Tp 275 F or HTdi 212 F Tp 230 F HTdi 266 F or HTdi 275 F HTdi 248 F continues for 10 minutes or more or After 30 sec After 20 sec Frequency agreement Tp 275 F HTdi 230 F Tp 257 F 52Hz OFF HTdi...

Page 230: ...7A 460V 26 5A 230V INV upper limit frequency max 210Hz Inverter current value 14 7A 460V 26 5A 230A INV Comp upper limit step 1 step up Inverter current value 14 7A 460V 26 5A 230V continues for 20 s...

Page 231: ...to overcurrent to the compressor resulting from failures of STD compressor such as locking Normal operation During the control of fin temperature protection Tfin 177 8 F INV upper limit frequency max...

Page 232: ...on current value 15 0A STD compressor OFF for 30 min Demand to operate When occurring 3 times within 90 min the malfunction code E6 is output If the power supply is reset while in operation prohibitio...

Page 233: ...g method refer to page 264 Details of operation Disable the compressor with the operation disable setting and only operate other compressors 9 2 Demand Operation In order to save the power consumption...

Page 234: ...e Use the following procedure to conduct the initial test operation after installation 3 Selection of Location 4 Inspecting and Handling the Unit 5 Placing the Unit 7 Field Wiring 6 Refrigerant Piping...

Page 235: ...asure to be taken against decreased insulation resistance in the compressor If the compressor is left to stand for an extended period of time after the refrigerant charge with the stop valve open and...

Page 236: ...rant quantity HEAT RECOVER SYSTEM REFRIGERANT AMOUNT FOR EXCEEDING CONNECTION CAPACITY OF INDOOR UNIT MODEL NAME THE AMOUNT OF REFRIGERANT INDOOR CONNECTION CAPACITY MODEL NAME REYQ72 120PYDN 7 9 lb R...

Page 237: ...ck for excessive refrigerant refilling Automatic judgment of piping length Before starting the normal operation after the completion of check operations make sure indoor and outdoor units operate norm...

Page 238: ...ling the shutoff valve The refrigerant charge port is connected to unit pipe When shipped the unit contains the refrigerant so use caution when attaching the charge hose Gauge manifold Charge hose val...

Page 239: ...tion Insulation of pipes should be done after performing the steps described in Section 10 2 3 Air Tight Test And Vacuum Drying Always insulate the liquid piping the HP LP gas piping the gas piping th...

Page 240: ...u remove burrs in the knock holes See figure 27 and paint the edges and areas around the edges using the repair paint Insulation material Caulking etc figure 26 Piping lead out hole lid Open a knock h...

Page 241: ...om the factory but depending on the size and length of the piping when installed it may require additional charging For charging the additional refrigerant follow the procedure in this chapter and the...

Page 242: ...table Tightening Torque To close 1 Remove the cap and turn the shaft clockwise with the hexagon wrench 2 Securely tighten the valve until the shaft contacts the main body seal 3 Make sure to tighten t...

Page 243: ...n BS1 once at Setting Mode 1 H1P off and set the MONITOR MODE H1P Blinking j h h h h h h 2 Press the SET button BS2 the number of times until the LED display matches that at right For checking the num...

Page 244: ...ee Shutoff valve operation procedure in chapter 10 2 6 1 for details on how to handle shutoff valves When done or when pausing the refrigerant charging operation close the valve of the refrigerant tan...

Page 245: ...on as follows When charging in cooling mode the system will stop operation when the required amount of refrigerant is charged During charging in heating mode a person must manually close valve A and s...

Page 246: ...s is not as shown in the following diagram H1P H2P H3P H4P H5P H6P H7P h h i h h h h Measuring device R 410A tank with siphon Charge hose Equalizer pipe shutoff valve Valve C Outside unit A Outside un...

Page 247: ...D displays are as below and that the remote controller display shows P9 code After checking push the MODE button BS1 once and the charging is complete In case of heating mode 7 Push the TEST button BS...

Page 248: ...igerant charging record the charging amount on the accessory REQUEST FOR THE INDICATON label Installation records and adhere it to the back side of the front panel Record the factory charged refrigera...

Page 249: ...gs as needed using the push button BS1 BS5 on the outside unit PC board A1P with the power on See 10 2 7 Onsite Settings 3 Perform the check operation following the Check Operation Method of the Servi...

Page 250: ...ng work Air tight test Vacuum drying Additional refrigerant charge Check operation Check that all work for the BS and indoor unit is finished and that there is no danger to operate Malfunction code In...

Page 251: ...ction code U3 will be displayed in the remote controller Perform the check operation following 10 2 6 2 2 Procedure of Check Operation 10 2 8 3 Checks After Test Run Perform the following checks after...

Page 252: ...action is necessary to comply 1 Calculate the amount of refrigerant lb charged to each system separately Note Where a single refrigerant facility is divided into 2 entirely independent refrigerant sys...

Page 253: ...Unit has been Added or Indoor or Outdoor Unit PC Board has been Changed Be sure to push and hold the RESET button for 5 seconds If not the addition cannot be recognized In this case the unit cannot be...

Page 254: ...SiUS34 801A_b Test Operation VRVIII R 410A Heat Recovery 60Hz 239 R 410A Label R 410A Label...

Page 255: ...e display LED LEDs display mode according to the setting 3 Mode setting switch Used to change mode 4 Local setting switch Used to make field settings MODE SET RETURN TEST RESET BS1 BS2 BS3 BS4 BS5 H1P...

Page 256: ...setting to ON with No 29 256 261 3 Setting of demand operation 1 Used to place limits on the compressor operating frequency to control the upper limit of power consumption 1 Mode 1 of Demand 1 60 or l...

Page 257: ...ion of outdoor unit s concerned and to conduct emergency operation of the system only with operable or outdoor unit s Make this setting while in Setting mode 2 For system with multiple outdoor units S...

Page 258: ...parts PC board After the replacement by the spare PC board be sure to make settings shown below When you change the main PC board A1P to spare parts PC board please carry out the following setting DI...

Page 259: ...tory Setting represents the position of switches Single Unit A1P Main ON OFF 1 2 3 4 1 2 3 4 ON OFF 1 2 3 4 1 2 3 4 ON OFF 1 2 3 4 1 2 3 4 ON OFF Set DS1 2 DS1 4 and DS2 1 to ON HEAT RECOVERY 8ton REY...

Page 260: ...t DS1 2 DS1 3 DS1 4 and DS2 2 to ON Setting method represents the position of switches 1 2 3 4 1 2 3 4 ON OFF 1 2 3 4 1 2 3 4 ON OFF 1 2 3 4 1 2 3 4 ON OFF HEAT RECOVERY 12ton REYQ144PTJU Set DS1 2 DS...

Page 261: ...sitions of switches DS1DS2 LED EB 1 2 3 4 DS1 1 2 3 4 DS2 Factory Setting represents the positions of switches ON OFF 1 2 3 4 1 2 3 4 ON OFF 1 2 3 4 1 2 3 4 ON OFF 1 2 3 4 1 2 3 4 ON OFF Set DS1 2 DS1...

Page 262: ...re the following three setting modes Setting mode 1 H1P off Initial status when normal Used to select the cool heat setting Also indicates during abnormal low noise control and demand control Setting...

Page 263: ...mode 1 Procedure for checking check items V2763 MODE H1P TEST H2P COOL HEAT select IND H3P MASTER H4P SLAVE H5P Low noise H6P Demand H7P 7 7 8 7 7 7 7 Current operating conditions 7Normal 8Abnormal 9I...

Page 264: ...st operation Used to forcibly 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 noise level...

Page 265: ...With the BS unit set to default enabling bleed heating prevention setting of outdoor unit will enable the bleed heating prevention setting of all BS units connected to the outdoor unit BS unit default...

Page 266: ...ing 8 7 7 8 7 7 7 Low Level L 8777778 Normal Level M 8777787 HighN 8777788 HighO 8777877 HighP Level H 8777878 HighQ 8777887 HighR 8777888 9 Tc setting 8 7 7 8 7 7 8 Low 8777778 Normal factory setting...

Page 267: ...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 demand 8777778 70 demand 8777787 80 demand 8777877 32 Normal demand se...

Page 268: ...units 1 9 7 7 7 8 7 8 6 Number of connected BS units 2 9 7 7 7 8 8 7 7 Number of connected zone units Fixed to 0 9 7 7 7 8 8 8 8 Number of outdoor units 3 9 7 7 8 7 7 7 9 Number of BS units 4 9 7 7 8...

Page 269: ...unified address is expressed as a binary number consisting of the lower 6 digits 0 63 In the address is 010110 binary number which translates to 16 4 2 22 base 10 number In other words the address is...

Page 270: ...r supply ON NOTE 1 2 1 2 F2 B C A F2 F1 F1 F2 F1 Outside unit TOIN DUNIT TOOUT DUNIT F1 F2 F1 F2 F1 F2 F1 F2 IN D OUT D BS REMOTE CONTROLLER BS unit A F1 F2 F1 F2 IN D OUT D BS BS unit B COOL HEAT sel...

Page 271: ...at night The external control adaptor for outdoor unit is not required 1 While in Setting mode 2 select the setting condition i e Level 1 Level 2 or Level 3 for set item No 22 Setting of nighttime lo...

Page 272: ...tting Factory setting is AM 8 00 Time set with NIGHTTIME LOW NOISE end setting If capacity precedence is set with the Capacity Precedence setting the fan speed increases according to a heavier load of...

Page 273: ...Setting of constant demand to ON 2 While in Setting mode 2 select the set item No 30 Setting of Demand 1 level and then set the setting condition to targeted mode Description of setting Setting proce...

Page 274: ...setting When the Normal demand setting is 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...

Page 275: ...yed 2 Setting mode 2 H1P on In setting 1 push and hold the BS1 MODE button for more than 5 seconds Setting mode 2 is entered and H1P lights Push the BS2 SET button several times and match the LED disp...

Page 276: ...de 1 9 Mode 2 9 Mode 3 9 9 25 External low noise setting Mode 1 9 Mode 2 Factory setting 9 Mode 3 9 26 Night time low noise start setting PM 8 00 9 PM 10 00 Factory setting 9 PM 0 00 9 27 Night time l...

Page 277: ...gerant recovery operation Collect the refrigerant using a refrigerant recovery unit See the instruction attached to the refrigerant recovery unit for more detal Press Mode button BS1 once and reset Se...

Page 278: ...k Stop valve check Wrong wiring check Piping length check 5 minutes 3933383 Cooling start control Step 2 3933388 3938338 3938383 Stop valve close check Step 3 Pump down residual operation Step 9 5 min...

Page 279: ...the remote controller press the RUN STOP button on the remote controller for 4 seconds or more when the outdoor unit stops because of malfunction state Details of operation Automatically disable the d...

Page 280: ...8811881 3 Press the RETURN button BS3 once 8111119 Factory setting 4 Press the SET button BS2 once 8111191 5 Press the RETURN button BS3 twice 8111111 6 Press the MODE button BS1 once 1181111 LED disp...

Page 281: ...he MODE button BS1 once 1181111 LED display 8 ON 1 OFF 9 Blink Step H1P H7P 1 Press and hold the MODE button BS1 for 5 sec or more 8111111 2 Press the SET button BS2 38 times 8811881 3 Press the RETUR...

Page 282: ...outdoor unit 2 operation of setting mode 2 to OFF LED display 8 ON 1 OFF 9 Blink H1P H7P H8P Outdoor unit 1 1181111 8 Outdoor unit 2 1111111 9 LED display 8 ON 1 OFF 9 Blink Step H1P H7P 1 Press and...

Page 283: ...the bleed heating prevention setting of every BS unit In this case enable the outdoor unit setting 12 1 11Reduction of Cooling Heating Selection Time of BS Units Make this setting to reduce selection...

Page 284: ...e the Cooling Thermostat is ON 291 5 2 When the Float Switch is Tripped while the Cooling Thermostat is OFF 291 5 3 When the Float Switch is Tripped During Heating Operation 292 5 4 When the Float Swi...

Page 285: ...al Insulation Material Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Piping Connections Liquid Pipes inch mm 1 4 6 4 mm Flare Con...

Page 286: ...cessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed...

Page 287: ...for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Air Filter Resin Net with Mold Resistant Resin Net with Mold Resistant Resin...

Page 288: ...H W D in 10 1 4 11 1 4 x 22 5 8 x 22 5 8 260 286 x 575 x 575 mm Coil Cross Fin Coil Rows Stages FPI 2 10 0 06 Face Area ft 2 9 Fan Model QST32C15M Type Turbo Fan Motor Output High W 55 Air Flow Rate H...

Page 289: ...re Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Mate...

Page 290: ...rocco Fan Motor Output kW 0 13 0 13 Air Flow Rate H L cfm 440 350 H L 580 460 H L External Static Pressure 4 wg 0 16 0 06 0 16 0 06 Drive Direct Drive Direct Drive Temperature Control Microprocessor T...

Page 291: ...essor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber Glass Fiber Glass Fiber Air Filter Resin Net with Mol...

Page 292: ...ostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber Glass Fiber Glass Fiber Air Filter Resin Net with Mold Resistant...

Page 293: ...2D3AG1VE 2D11 2D3AF1VE Type Sirocco Fan Sirocco Fan Sirocco Fan Motor Output kW 0 15 0 27 0 43 Air Flow Rate H L cfm 690 565 1 020 810 1 270 1 020 External Static Pressure 4 in Aq 0 66 0 43 0 71 0 43...

Page 294: ...irect Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound...

Page 295: ...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 296: ...QCL9686 QCL9686 Type Cross Flow Fan Cross Flow Fan Motor Output kW 0 04 0 04 Air Flow Rate H L cfm 500 400 635 470 Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Coo...

Page 297: ...rive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorb...

Page 298: ...ect Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound A...

Page 299: ...ree of gas when cooling and subcooled degree when heating Max 2000 pls O Suction air thermistor R1T Used for thermostat control P Liquid pipe thermistor R2T Used to control superheated degree of gas w...

Page 300: ...20E MA OFF 52H Aux electric heater OFF 52H Humidifier OFF Mu Humidifier OFF Mu OFF ON a b Set temperature Suction air temperature a b 1 a b 0 5 is only available for the FXCQ FXFQ FXHQ and FXKQ serie...

Page 301: ...rogress Swing flap Set wind direction Fan Operating with set air flow rate MF Electronic expansion valve Capacity control 20E 20E 20E Fan LL operation MF Fan Operating in L mode MF Fan Stop MF b a 2 4...

Page 302: ...preset 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 severa...

Page 303: ...so that the return air temperature is higher than the preset temperature Ex When heating Assuming the preset temperature in the figure above is 75 F and the return air temperature has changed from 64...

Page 304: ...hermostat Control in Dry Operation While in dry operation the thermostat control is conducted according to a return air temperature at the time of starting the dry operation Assuming that the return a...

Page 305: ...6 F 77 F 86 F Set cooling heating temp Heating mode Cooling mode Control temp Differential value set to 1 8 F 78 8 F 76 1 F 84 2 F Set heating temp 80 6 F Set cooling temp Heating mode Cooling mode Co...

Page 306: ...owing 4 figures 5 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 fin of the indoor unit...

Page 307: ...inutes of operation it stops for 5 seconds then for 5 minutes the operation cycle ends then operation resumes until the switch is reset 5 4 When the Float Switch is Tripped and AF is Displayed on the...

Page 308: ...Remote controller set temp return air temp becomes smaller SHS becomes higher Subcooled degree control in heating operation This function is used to adjust the opening of the electronic expansion valv...

Page 309: ...tions for starting freeze prevention Temperature is 30 2 F or less for total of 40 min or temperature is 23 F or less for total of 10 min Conditions for stopping freeze prevention Temperature is 44 6...

Page 310: ...l ON OFF is conducted by converting the heater temperature into the condensing pressure equivalent saturated temperature Tc according to the temperature detection through the high pressure sensor SINP...

Page 311: ...FF 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 direction s...

Page 312: ...e start condition 2 is established the operations shown below will be conducted TH2 Temperature F detected with the gas thermistor TC High pressure equivalent saturated temperature Defrost ending or o...

Page 313: ...flow 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 pr...

Page 314: ...normal mode push the button for 4 seconds or more and operation then enters the FIELD SET MODE Select the desired MODE NO with the button 2 During group control and you want to set by each individual...

Page 315: ...he 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 settin...

Page 316: ...oor unit mode No 20 22 and 23 have been selected push the BS8 Q 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 R set A...

Page 317: ...body thermostat Only remote controller thermostat 3 3 Display time to clean air filter calculation Set when filter sign is not to be displayed Display No display 4 12 22 0 Optional accessories output...

Page 318: ...pe Ceiling Suspended type Wall mounted type Floor standing type Concealed Floor standing type Multi flow FXFQ FXZQ FXDQ FXSQ FXMQ FXHQ FXAQ FXLQ FXNQ Filter sign Ultra long life filter sign Remote con...

Page 319: ...hen the Second Code No is set to 03 room temperature is controlled by the remote controller thermistor 4 Filter Cleaning Displayed or Not Displayed Whether or not to display Filter Cleaning after oper...

Page 320: ...air flow volume up mode is used careful consideration is required before deciding installation location During heating operation this setting takes precedence over 7 Fan Stop When Thermostat is OFF M...

Page 321: ...et to enable Auto restart function after power failure reset use the following cautions 11 Air Flow When Cooling Thermostat is OFF Sets airflow to LL air flow when cooling thermostat is OFF 12 Setting...

Page 322: ...y Outlets 13 23 0 01 Standard N Lower than 9 ft Lower than 10 ft Lower than 12 ft 02 High Ceiling H Lower than 10 ft Lower than 11 ft Lower than 13 ft 03 Higher Ceiling S Lower than 12 ft Lower than 1...

Page 323: ...er and Drain Pump Used to interlock the humidifier with the drain pump When water is drained out of the unit this setting is unnecessary 19 Individual Setting of Ventilation Set to perform individual...

Page 324: ...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 325: ...tralized control 1 When in the normal mode push the button for 4 seconds or more and operation then enters the field set mode 2 Set mode No 00 with the button 3 Set the group No for each group with th...

Page 326: ...about 1 minute on the liquid crystal display This is not an operational flaw 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...

Page 327: ...emperature and operation mode setting by remote controller can be set and displayed by operation modes 0 through 19 ON OFF control cannot be performed with the remote controller Used when you want to...

Page 328: ...ontroller Control mode Operation OFF Temperature control Operation mode setting Unified operation individual operation by central remote controller or operation controlled by timer Unified OFF individ...

Page 329: ...Field Setting SiUS34 801A_b 314 Indoor Unit...

Page 330: ...ger 352 3 10 C5 Indoor Unit Malfunction of Thermistor R3T for Gas Pipes 353 3 11 C9 Indoor Unit Malfunction of Thermistor R1T for Suction Air 354 3 12 CJ Indoor Unit Malfunction of Thermostat Sensor i...

Page 331: ...g after Replacing Main PC Board or Faulty Combination of PC Board 410 3 44 U0 Outdoor Unit Gas Shortage Alert 412 3 45 U1 Reverse Phase Open Phase 414 3 46 U2 Outdoor Unit Power Supply Insufficient or...

Page 332: ...US34 801A_b Troubleshooting 317 5 1 Operation Lamp Blinks 453 5 2 Display Under Centralized Control Blinks Repeats Single Blink 455 5 3 Display Under Centralized Control Blinks Repeats Double Blink 45...

Page 333: ...ources e g OA equipment located in a room 4 System does not operate The system stops and immediately restarts operation If the OPERATION lamp on the remote controller turns ON the system will be norma...

Page 334: ...ection is not corresponding to that displayed on the remote controller The louver does not swing Automatic control Normal operation 10 A white mist emits from the system Indoor unit In cooling operati...

Page 335: ...the system In operation Odors in a room are absorbed into indoor unit and then blown out The inside of the indoor unit should be cleaned 14 Outdoor unit fan does not rotate In operation Fan revolutio...

Page 336: ...ation 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...

Page 337: ...tell what kind of malfunction caused operation to stop See page 115 for malfunction codes and the corresponding problem Note 1 Pressing the INSPECTION TEST button will blink to indicate checking mode...

Page 338: ...wing 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 Continuous beep No...

Page 339: ...Troubleshooting by Remote Controller SiUS34 801A_b 324 Troubleshooting The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed...

Page 340: ...SiUS34 801A_b Troubleshooting by Remote Controller Troubleshooting 325...

Page 341: ...A 3 A 9 2 A A 5 A A A A 9 6 A 9 F Outdoor model code Model RSXYP RXYP RSEYP RSXYP L RXYQ M REYQM RXYQ PYDN RXYQ PTJU REYQ PYDN REYQ PTJU Unit Malfunction code Inspection Normal display No display 0 L...

Page 342: ...or wireless remote controller Mode 43 only can be set 2 Select the unit No For group control only Select the indoor unit No to be set with the time mode For wireless remote controller button 3 Make th...

Page 343: ...ch unit When you 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...

Page 344: ...ller Self Diagnosis Function The remote controller switches are equipped with a self diagnosis function to ensure appropriate maintenance If a malfunction occurs during operation the operation lamp ma...

Page 345: ...9 Actuation of high pressure switch 360 E4 9 9 9 Actuation of low pressure sensor 361 E5 9 9 9 Compressor motor lock 364 E6 9 9 9 Standard compressor lock or over current 365 E7 9 9 9 Malfunction of...

Page 346: ...ontrollers malfunction of sub remote controller 431 U9 9 9 9 Malfunction of transmission between indoor unit and outdoor unit in the same system 432 UA 9 9 9 Improper combination of indoor and outdoor...

Page 347: ...for fan 2 DC fan motor lock detected for fan 2 Electronic expansion valve malfunction EVM E9 EV2 EVT Positioning signal malfunction of outdoor unit fan motor DC fan motor positioning signal malfuncti...

Page 348: ...9 8 8 7 7 F3 9 9 7 7 9 7 9 9 7 8 7 7 9 9 9 8 7 7 7 7 7 9 8 8 7 7 F6 9 7 8 7 9 9 7 9 8 7 7 7 7 7 9 8 8 7 7 9 9 J2 9 9 7 7 9 9 7 9 7 8 7 7 9 7 9 8 7 7 7 7 7 9 8 8 7 7 1 9 8 7 7 7 7 7 9 8 8 7 9 J3 9 7 8...

Page 349: ...transmission malfunction LC Open phase and unbalanced power supply Unbalanced INV power supply voltage P1 Switch box inside temperature sensor malfunction INV box temperature thermistor malfunction P...

Page 350: ...9 7 7 7 7 9 9 7 U0 9 9 7 9 7 7 9 9 7 7 7 7 9 7 7 7 7 9 7 7 9 9 U1 9 7 7 7 9 9 7 7 7 7 9 7 7 1 U2 9 7 7 9 7 9 7 7 7 7 9 7 7 9 7 7 7 7 9 7 9 U3 9 7 7 9 9 9 7 7 7 7 9 7 7 9 9 9 7 7 7 7 9 7 9 9 9 U4 9 7...

Page 351: ...inals 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...

Page 352: ...ceived 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 Troubleshooting Turn power su...

Page 353: ...FXMQ FXHQ 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 switch goes OFF Su...

Page 354: ...indoor 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 suppl...

Page 355: ...hen the fan revolutions do not increase Supposed Causes Broken wires in short circuit of or disconnection of connectors from the fan motor harness Faulty fan motor Broken wires or faulty insulation Ab...

Page 356: ...e 5 6 7 Red FG Vsp Vcc GND Vdc Vdc 1 GND 2 3 3 FG 4 Vsp 1 2 5 Vcc Measuring point FG GND Vsp GND Vcc GND Vdc GND Criteria Not less than 1M Not less than 100k Not less than 100 Not less than 100k Judgm...

Page 357: ...aulty indoor fan motor Broken wires Faulty contact Troubleshooting Is the power of approx 12VDC supplied between the Pins1 and 3 when the X27A is disconnected and the power supply turns ON YES NO NO Y...

Page 358: ...operation Supposed Causes Faulty power supply for the indoor unit fan motor Clogged drain piping Actuation of the indoor unit safety device Faulty contact in the fan wiring circuit Troubleshooting NO...

Page 359: ...it switch when the motor turns Malfunction Decision Conditions When ON OFF of the microswitch for positioning cannot be reversed even though the louver motor is energized for a specified amount of tim...

Page 360: ...ain 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 Wh...

Page 361: ...lectronic expansion valve main body by using microcomputer Malfunction Decision Conditions Pin input for electronic expansion valve coil is abnormal when initializing microcomputer Either of the follo...

Page 362: ...nsion valve main body When power is supplied YES YES 1 How to check the coil of electronic expansion valve drive Remove the connector for electronic expansion valve X7A from PC board Measure the resis...

Page 363: ...s Indoor units except FXFQ models Method of Malfunction Detection Check coil condition of electronic expansion valve by using microcomputer Malfunction Decision Conditions Pin input for electronic exp...

Page 364: ...rd Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred YES 1 How to check the coil of electronic expansion valve drive Remove the connector...

Page 365: ...N to OFF while the compressor is in non operation Error code is displayed but the system operates continuously Supposed Causes Humidifier unit optional accessory leaking Defect of drain pipe upward sl...

Page 366: ...abnormal Malfunction Decision Conditions When the capacity code is not contained in the PC board s memory and the capacity setting adaptor is not connected Supposed Causes The capacity setting adaptor...

Page 367: ...efect of thermistor R2T for liquid pipe Defect of indoor unit PC board Troubleshooting Refer to the Thermistor Resistance Temperature Characteristics table on Page 523 Caution Be sure to turn off powe...

Page 368: ...r unit thermistor R3T for gas pipe Defect of indoor unit PC board Troubleshooting Refer to the Thermistor Resistance Temperature Characteristics table on Page 529 Caution Be sure to turn off power swi...

Page 369: ...d 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 the Thermistor Resistance Temperature...

Page 370: ...troller thermistor Defect of remote controller PC board Troubleshooting Note 1 How to delete the record of malfunction codes Press the Operate Stop button for 4 seconds or more while the malfunction c...

Page 371: ...in the hardware section between the indoor unit and the outdoor unit are not normal Supposed Causes Defect of outdoor unit PC board A1P Defective connection of inside outside relay wires Troubleshoot...

Page 372: ...n PC board ass y Remote Controller Display E2 Applicable Models RXYQ72P 240PYDN PTJU REYQ72P 240PYDN PTJU Method of Malfunction Detection Failure is to be detected by using leak detection PC board ass...

Page 373: ...earth leakage detection PC board A7P or A9P 2 for any broken wire in it Reinstall all wirings Turn ON the power supply Check whether there is continuity between both X3A ends of the earth leakage det...

Page 374: ...when the contact of the high pressure protection switch opens Malfunction Decision Conditions Error is generated when the HPS activation count reaches the number specific to the operation mode Refere...

Page 375: ...gh pressure sensor The high pressure sensor is normal and the pressure detected with the PC board is also normal The high pressure has really become high CHECK 5 Referring to information on P464 remov...

Page 376: ...72P 240PYDN PTJU Method of Malfunction Detection Abnormality is detected by the pressure value with the low pressure sensor Malfunction Decision Conditions Error is generated when the low pressure is...

Page 377: ...mation on P465 remove the causes by which the low pressure has become low 1 Make a comparison between the voltage of the pressure sensor and that read by the pressure gauge As to the voltage of the pr...

Page 378: ...kes the position signal from UVW line connected between the inverter and compressor and the malfunction is detected when any abnormality is observed in the phase current waveform Malfunction Decision...

Page 379: ...n of wires Restart and check the operation Check if the condition occurs again Check if the start mode is in the high differential pressure not less than 72 5psi Check if the inverter output voltage b...

Page 380: ...N PTJU REYQ72P 240PYDN PTJU Method of Malfunction Detection Detects the overcurrent with current sensor CT Malfunction Decision Conditions Malfunction is decided when the detected current value exceed...

Page 381: ...sts around the air outlet YES Is the power supply voltage normal NO NO NO YES NO Is the magnetic switch K2M K3M normal 1 Is above wiring correct NO Is current sensor correct 1 Check the wiring from po...

Page 382: ...ed on the number of rotation detected by hole IC during the fan motor operation Malfunction Decision Conditions Overcurrent is detected for INVERTER PC board A2P or fan INVERTER PC board A5P System do...

Page 383: ...tus of the connectors Fan motor 1 relay connector or X1A X2A X501A X502A of compressor inverter PC board Fan motor 2 relay connector or X1A X2A X501A X502A of fan inverter PC board Check the color of...

Page 384: ...nnector of the fan motor NO Replace the corresponding fan motor YES Resistance value between the power supply wire terminal of fan motor and the motor frame metal is 1M and below NO Replace the corres...

Page 385: ...DN PTJU REYQ72P 240PYDN PTJU Method of Malfunction Detection Check disconnection of connector To be detected based on continuity of of electronic expansion valve coil Malfunction Decision Conditions N...

Page 386: ...onic expansion valve is connected Replace the connecting cable Replace outdoor unit PC board A1P YES YES NO Ensure correct connection External factor other than malfunction for example noise etc NO Th...

Page 387: ...d of Malfunction Detection Temperature detected by the discharge pipe temperature sensor Malfunction Decision Conditions When the discharge pipe temperature rises to an abnormally high level 275 F and...

Page 388: ...YES Discharge pipe thermister is normal and the temperature detection of the main PC board is also normal Actually the temperature of discharge pipe is high Check 3 Remove the factor of overheat opera...

Page 389: ...of the outside air thermistor Misalignment of the heat exchanging deicer thermistor Misalignment of the liquid pipe thermistor Troubleshooting Refer to the Thermistor Resistance Temperature Characteri...

Page 390: ...ble Models RXYQ72P 240PYDN PTJU REYQ72P 240PYDN PTJU Method of Malfunction Detection Abnormal signal from fan motor Malfunction Decision Conditions In case of detection of abnormal signal at starting...

Page 391: ...are balanced Check the connector of the fan motor 1 Cut the power supply off 1 Check procedure for fan motor connector 1 Power OFF the fan motor 2 Remove the connector X2A or X4A on the PC board to m...

Page 392: ...onnection Defect of thermistor R1T for outdoor air Defect of outdoor unit PC board A1P Troubleshooting Refer to the Thermistor Resistance Temperature Characteristics table on Page 523 V3070 Caution Be...

Page 393: ...le Models RXYQ72P 240PYDN PTJU REYQ72P 240PYDN PTJU Method of Malfunction Detection Current value detected by current sensor Malfunction Decision Conditions When the current value detected by current...

Page 394: ...A1P Replace current sensor or outdoor unit PC board Connect the connector and operate unit again NO NO Mount the current sensor correctly and operate unit again YES Correct the connections between the...

Page 395: ...ect of outdoor unit PC board A1P Defect of thermistor connection Troubleshooting The alarm indicator is displayed when the fan is being used also Refer to the Thermistor Resistance Temperature Charact...

Page 396: ...of thermistor Defective thermistor Defective outdoor unit PC board Troubleshooting Refer to the Thermistor Resistance Temperature Characteristics table on Page 523 V3070 Caution Be sure to turn off p...

Page 397: ...0T for outdoor unit suction pipe Defect of outdoor unit PC board A1P Defect of thermistor connection Troubleshooting Refer to the Thermistor Resistance Temperature Characteristics table on Page 523 V3...

Page 398: ...T or R12T for outdoor unit coil Defect of outdoor unit PC board A1P Defect of thermistor connection Troubleshooting Refer to the Thermistor Resistance Temperature Characteristics table on Page 523 V30...

Page 399: ...1 R6T R9T or R14T Faulty outdoor unit PC board Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P523 V3075 Caution Be sure to turn of...

Page 400: ...tor 2 R7T or R15T Faulty outdoor unit PC board Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P523 V3075 Caution Be sure to turn of...

Page 401: ...s Faulty subcooling heat exchanger gas pipe thermistor R5T or R13T Faulty outdoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P523 V3075 Caution B...

Page 402: ...ethod of Malfunction Detection Malfunction is detected from the pressure detected by the high pressure sensor Malfunction Decision Conditions When the high pressure sensor is short circuit or open cir...

Page 403: ...main PC board Replace the high pressure sensor YES NO Replace the main PC board NO Replace the high pressure sensor YES NO Are the characteristics of the high pressure sensor normal Make a comparison...

Page 404: ...TJU Method of Malfunction Detection Malfunction is detected from pressure detected by low pressure sensor Malfunction Decision Conditions When the low pressure sensor is short circuit or open circuit...

Page 405: ...board NO Replace the low pressure sensor YES NO Are the characteristics of the low pressure sensor normal Make a comparison between the voltage characteristics 1 and the gauge pressure YES If the PC...

Page 406: ...Malfunction is detected based on the current value during waveform output before starting compressor Malfunction is detected based on the value from current sensor during synchronous operation when st...

Page 407: ...ES YES NO Replace the lead wires Replace the compressor and compressor inverter PC board A2P at the same time Replace the inverter PC board A2P Replace the compressor inverter PC board A2P and fan inv...

Page 408: ...ay L4 Applicable Models RXYQ72P 240PYDN PTJU REYQ72P 240PYDN PTJU Method of Malfunction Detection Fin temperature is detected by the thermistor of the radiation fin Malfunction Decision Conditions Whe...

Page 409: ...control PC board 3 While in monitor mode check the outdoor unit concerned Single system Multi system Is the thermistor resistance normal NO YES Replace the thermistor Does the malfunction recur when...

Page 410: ...SiUS34 801A_b Troubleshooting by Indication on the Remote Controller Troubleshooting 395 Inverter PC board for compressor Refer to Thermistor Resistance Temperature Characteristics table on P523...

Page 411: ...PTJU REYQ72P 240PYDN PTJU Method of Malfunction Detection Malfunction is detected from current flowing in the power transistor Malfunction Decision Conditions When an excessive current flows in the p...

Page 412: ...ES YES NO NO YES YES YES YES NO NO Power OFF Check if the stop valve is open Check if the compressor lead wires are normal Check if the wiring and connection to the compressor are normal Insulation re...

Page 413: ...lowing in the power transistor Malfunction Decision Conditions When overload in the compressor is detected Inverter secondary current 16 1A For 460V units 1 19 0A and over continues for 5 seconds 2 16...

Page 414: ...he compressor is 100 k or below Compressor coils are disconnected Connect the compressor lead wires then restart the operation Check 4 Check if the power transistor is normal Malfunction code L8 is di...

Page 415: ...240PYDN PTJU REYQ72P 240PYDN PTJU Method of Malfunction Detection Detect the failure based on the signal waveform of the compressor Malfunction Decision Conditions Starting the compressor does not co...

Page 416: ...tance of the compressor is more than 100k Check if the compressor lead wires are disconnected Go on to the next page Starting failure due to aged operation Charge a right amount of refrigerant Open th...

Page 417: ...for more than 6 hours Check if the insulation resistance of the compressor is 100k or over Broken inside the compressor Cancel the sleeping state of refrigerant Replace the inverter compressor Replace...

Page 418: ...mmunication state between inverter PC board and control PC board by micro computer Malfunction Decision Conditions When the correct communication is not conducted in certain period Supposed Causes Mal...

Page 419: ...of the inverter PC board main PC board and sub PC board all securely connected Is the type of the inverter PC board correct 1 The INV compressor has insulation resistance of not more than 100k The fa...

Page 420: ...ayed malfunction code Not the LC malfunction Check the malfunction code again Replace the main PC board A1P Continue operation It is supposed that the malfunction results from causes such as instantan...

Page 421: ...pacitor in the inverter Consequently the increased ripple is detected Malfunction Decision Conditions When the resistance value of thermistor becomes a value equivalent to open or short circuited stat...

Page 422: ...y voltage imbalance Even if the power supply voltage is not unbalanced when measuring it there are many cases where it gets unbalanced during nighttime around 6 00PM to 10 00PM No abnormalities are ob...

Page 423: ...ssing the inspection button Supposed Causes Defect of radiator fin temperature sensor Defect of inverter PC board Faulty inverter compressor Faulty fan motor Troubleshooting Caution Be sure to turn of...

Page 424: ...SiUS34 801A_b Troubleshooting by Indication on the Remote Controller Troubleshooting 409 Inverter PC board for compressor Refer to Thermistor Resistance Temperature Characteristics table on P523...

Page 425: ...ay PJ Applicable Models RXYQ72P 240PYDN PTJU REYQ72P 240PYDN PTJU Method of Malfunction Detection This malfunction is detected according to communications with the inverter Malfunction Decision Condit...

Page 426: ...YES YES YES NO NO NO Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Make correct setting of DIP switch For setting procedure refer to...

Page 427: ...ipe and heat exchanger Malfunction Decision Conditions In cooling mode Low pressure becomes 14 5psi or below In heating mode The degree of superheat of suction gas becomes 36 degrees and over SH Ts1 T...

Page 428: ...Replace the thermister Replace the main PC board With individual systems replace the control PC board 1 A1P or the control PC board 3 A3P With multi systems replace the main PC board A1P NO NO YES Re...

Page 429: ...se phase Power supply open phase Defect of outdoor PC board A1P Troubleshooting V2820 Operation is normal if one place of power supply line phase is replaced Fix the open phase Requires inspection of...

Page 430: ...the inverter and power supply voltage Malfunction Decision Conditions When the voltage aforementioned is not less than 780V or not more than 320V or when the current limiting voltage does not reach 2...

Page 431: ...rrect the unbalanced loads to eliminate the unbalanced state Unbalanced voltage will cause extremely unbalanced current thus impairing the service life of or resulting in the malfunction of the equipm...

Page 432: ...eplace it if necessary End of measures The malfunction may temporarily result from on site causes Causes Instantaneous power failure open phase noises or else YES YES YES YES YES NO NO NO NO NO Check...

Page 433: ...sed Causes Check operation is not executed Troubleshooting V3052 Performs the chech operation again and completes the check operation When a leakage detection function is needed normal operation of ch...

Page 434: ...mission between indoor and outdoor units is normal Malfunction Decision Conditions When transmission is not carried out normally for a certain amount of time Supposed Causes Indoor to outdoor outdoor...

Page 435: ...on 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 All indoor unit remote controllers of...

Page 436: ...ure sensor is connected to X32A of outdoor unit PC board A1P Connect low pressure sensor property and restart system YES NO The low pressure sensor is connected to X31A blue of outdoor unit PC board A...

Page 437: ...re connect or disconnect connector or parts damage may be occurred The relationship between the 1 VH and high pressure is normal see 2 when voltage is measured between X32A pins 1 and 3 of outdoor uni...

Page 438: ...connect or disconnect connector or parts damage may be occurred The relationship between the 3 VH and low pressure is normal see 4 when voltage is measured between X31A pins 2 and 3 of outdoor unit PC...

Page 439: ...rollers Defect of 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 disco...

Page 440: ...Malfunction Decision Conditions When transmission is not carried out normally for a certain amount of time Supposed Causes Connection error in connecting wires between outdoor unit and outdoor unit o...

Page 441: ...the slave unit 2 Go on to the Diagnosis Flow 5 Multi connection REYQ units Go on to the Diagnosis Flow 6 Erroneous manual address settings of the slave units 1 and 2 Go on to the Diagnosis Flow 7 Conn...

Page 442: ...ce the outdoor unit main PC board NO YES NO Correct the connecting wiring with the outside control adapter Diagnosis Flow 1 Check if any disconnection or connection error is detected in connecting wir...

Page 443: ...al condition monitor LED for the outdoor unit main PC board blinks Check if the outdoor unit is powered on Check if the power supply wire for the external control adaptor for outdoor unit is connected...

Page 444: ...g wires of Multi Slave 2 with outdoor multi Check if the wiring is disconnected or is about to be disconnected Check if the outdoor unit REYQ8 16PY1 is connected to multi system Check 3 Check the conn...

Page 445: ...oor unit Correct the connecting wires of the outdoor multi and then reset the power supply Diagnosis Flow 7 Diagnosis Flow 8 Check the connection status of one of the connecting wires of Outdoor Multi...

Page 446: ...ot 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 Troub...

Page 447: ...ission within or outside of other system Malfunction of electronic expansion valve in indoor unit of other system Defect of PC board of indoor unit in other system Improper connection of transmission...

Page 448: ...the type of refrigerant between indoor and outdoor units The number of indoor units is out of the allowable range Incorrect signals are transmitted among the indoor unit BS unit and outdoor unit Malfu...

Page 449: ...Check 4 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred To Diagnosis Flow 4 Faulty wiring in units dedicated to multi connections Check...

Page 450: ...the main PC board of the outdoor unit With single systems replace the control PC board 1 A1P With multi systems replace the main PC board A1P Match the refrigerant types of the outdoor unit and the i...

Page 451: ...rts PC board Check if the unit is not connected to outdoor units of different models Check if the outdoor unit PC board is replaced with PC board for spare parts Check if the spare parts PC board sett...

Page 452: ...model BSVQ P Replace the outdoor unit PC board as shown below With single systems replace the control PC board 1 A1P With multi systems replace the main PC board A1P Is the model BSVQ P connected Chec...

Page 453: ...ring between the BS units correct Check 3 Check 3 Check 4 Check 4 YES NO Correct the connection wiring Replace the indoor unit or BS unit PC board Is the connection wiring between the indoor unit and...

Page 454: ...it detects the same address as that of its own on any other indoor unit Malfunction Decision Conditions The malfunction decision is made as soon as the abnormality aforementioned is detected Supposed...

Page 455: ...etection Microcomputer checks if transmission between indoor unit and centralized controller is normal Malfunction Decision Conditions When transmission is not carried out normally for a certain amoun...

Page 456: ...ng length types of cables and wires number of units connected and others If no problems replace the indoor unit PC board NO YES Continued to A on the following page YES Check the indoor unit for which...

Page 457: ...rtoP 466 A Has the master unit central setting connector been connected NO Correct the wiring Abnormal Correct the connection of the connector NO YES YES Check the transmission wiring with the master...

Page 458: ...to execute check 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...

Page 459: ...XYQ72P 240PYDN PTJU REYQ72P 240PYDN PTJU Method of Malfunction Detection Detect an indoor unit with no address setting Malfunction Decision Conditions The malfunction decision is made as soon as the a...

Page 460: ...nect the outdoor outdoor unit transmission wiring to create the one system status and then check whether or not the system is normal NO Does a UH malfunction occur for all indoor units in the system Y...

Page 461: ...at the same time Supposed Causes Defect of central remote controller PC board Defect of Intelligent Touch Controller PC board Defect of Schedule timer PC board Troubleshooting Replace the central rem...

Page 462: ...troller Schedule timer Method of Malfunction Detection DIII NET transmission data The system will be automatically reset Malfunction Decision Conditions When no master controller is present at the tim...

Page 463: ...door unit NO Have power supplies to every central equipment been turned ON Is the display of LCD OK NO YES Nothing is displayed on the LCD by operating intelligent Touch controller 1 NO Has the Reset...

Page 464: ...r Method of Malfunction Detection DIII NET transmission dataMalfunction Decision Conditions When the schedule timer is set to individual use mode but other central components are present When multiple...

Page 465: ...entral connector is connected and then reset power supplies of every central equipment Disconnect the master unit central setting connector and connect this connector to different central equipment an...

Page 466: ...Touch Controller Schedule timer Method of Malfunction Detection DIII NET transmission dataMalfunction Decision Conditions Two or more units of central remote controllers and Intelligent Touch Controll...

Page 467: ...intelligent Touch controller Is the Master Slave setting of the central equipment correct Was the central equipment connected once and then disconnected or was additional central equipment installed I...

Page 468: ...e Models All model of indoor units Unified ON OFF controller Method of Malfunction Detection DIII NET transmission dataMalfunction Decision Conditions Malfunction of transmission between optional cent...

Page 469: ...ster controller disconnected Set the group No correctly Replace the central PC board Fix the wiring correctly Fix the wiring correctly Connect the connector correctly Replace the central PC board Rese...

Page 470: ...alized 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...

Page 471: ...or 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...

Page 472: ...ntroller 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 c...

Page 473: ...dress group No 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 discon...

Page 474: ...ECK 2 1 Turn off the power supply 2 While disconnected measure the resistance between Vcc and each phase of U V W and GND and each phase at the motor side connectors five core wire to check that the v...

Page 475: ...ster resistance property is normal Check if the piping temperature connected to the 4 way switch valve is normal Check if the pressure value given by the service checker corresponding to actual measur...

Page 476: ...value mode in the range of multiplying 1k Point of Measurement Judgment Criteria Remarks No 15k and above including 2 15k 2 15k Due to condenser charge and so on resistance measurement may require som...

Page 477: ...rresponding to the measurement of the pressure sensor In cooling High suction air temperature of the condenser In heating High suction air temperature of outdoor unit Short circuit High ambient temper...

Page 478: ...for the thermistor resistance and connection In cooling Low suction air temperature of the evaporator In heating Low suction air temperature of indoor unit Short circuit Is the suction air temperatur...

Page 479: ...in places before the said place with continuity 2 Procedure for checking indoor outdoor unit transmission wiring for broken wires of the Outdoor Unit C for broken wires Turn OFF the power supply to al...

Page 480: ...edule timer are not available for combined use 2 The intelligent Touch controller central remote controller and the unified ON OFF controller have been set to Provided with the master unit central set...

Page 481: ...th those described in the list of Setting of master unit central setting connector 1 2 3 4 Pattern 1 00 4 15 Master Slave 5 00 8 15 Master Slave 1 00 4 15 Master Slave 5 00 8 15 Master Slave N CRC Mas...

Page 482: ...e and insulation Refer to information in the Check 11 section Are the voltage characteristics normal Is the connector correctly connected Does the thermistor have normal resistance characteristics Is...

Page 483: ...mperature of outlet air passing through the subcooled section becomes lower Cooling High pressure Low pressure Frequency High pressure drooping control LP is maintained at a constant level To maintain...

Page 484: ...larger Either of the motorized valves becomes fully open Frequency comes to the minimum level Fan control is activated for HP protection under cooling control at low outdoor temperature i e the fan is...

Page 485: ...sor at the degree of vacuum of 14 60psi or less for a period of one hour or more and then check to be sure that the vacuum gauge reading does not rise If the reading rises moisture may have remained i...

Page 486: ...e compressor motor fails to start up Liquid sealing or faulty compressor Excessive oil or refrigerant Faulty inverter PC board E5 Inverter compressor lock The compressor is in the locked status does n...

Page 487: ...ons between the main PC board and the inverter PC board are not normal Main Control PC board Weak current part Heavy current part Power transmission etc Inverter PC board Compressor Power supply 3 pha...

Page 488: ...t 509 3 List of Electrical and Functional Parts 510 3 1 Outdoor Unit 510 3 2 Indoor Side 514 4 Option List 518 4 1 Option List of Controllers 518 4 2 Option Lists Outdoor Unit 519 5 Piping Installatio...

Page 489: ...Piping Diagrams SiUS34 801A_b 474 Appendix 1 Piping Diagrams 1 1 Outdoor Unit Heat Pump 460V RXYQ72 96 120PYDN 3D058636A...

Page 490: ...SiUS34 801A_b Piping Diagrams Appendix 475 Heat Pump 230V RXYQ72 96 120PTJU 3D058636A...

Page 491: ...Piping Diagrams SiUS34 801A_b 476 Appendix Heat Pump 230V RXYQ144PTJU 3D058640...

Page 492: ...SiUS34 801A_b Piping Diagrams Appendix 477 Heat Recovery 460V REYQ72 96 120PYDN 3D058639A...

Page 493: ...Piping Diagrams SiUS34 801A_b 478 Appendix Heat Recovery 460V REMQ72PYDN 3D058637A...

Page 494: ...SiUS34 801A_b Piping Diagrams Appendix 479 Heat Recovery 460V REMQ96 120PYDN 3D058638A...

Page 495: ...Piping Diagrams SiUS34 801A_b 480 Appendix Heat Recovery 230V REYQ72 96 120PTJU 3D058639A...

Page 496: ...SiUS34 801A_b Piping Diagrams Appendix 481 Heat Recovery 230V REYQ144PTJU 3D058640...

Page 497: ...Piping Diagrams SiUS34 801A_b 482 Appendix Heat Recovery 230V REMQ72PTJU 3D058637A...

Page 498: ...SiUS34 801A_b Piping Diagrams Appendix 483 Heat Recovery 230V REMQ96 120PTJU 3D058638A...

Page 499: ...7M 09M 12M 18M 24MVJU FXLQ 12M 18M 24MVJU FXNQ 12M 18M 24MVJU R1T Thermistor for return air temperature R2T Thermistor for liquid line temperature R3T Thermistor for gas line temperature J DU220 602J...

Page 500: ...SiUS34 801A_b Piping Diagrams Appendix 485 FXDQ Refrigerant pipe connection port diameters 4D043864J Model Gas Liquid FXDQ07M 09M 12M 18MVJU 1 2 1 4 FXDQ24MVJU 5 8 3 8...

Page 501: ...Piping Diagrams SiUS34 801A_b 486 Appendix 1 3 BS Unit 4D057985A...

Page 502: ...SCHARGE A1P WHT W U V 5 X18A T2A N 1 P1 N1 MAGNETIC CONTACTOR M1C A4P H4P BLU ELECTRONIC EXPANSION VALVE SUBCOOL A1P MAGNETIC RELAY E1HC A1P F2 MAGNETIC CONTACTOR M2C t POWER SUPPLY K1R PRINTED CIRCUI...

Page 503: ...PHASE REVERSAL DETECT CIRCUIT A1P Y3S R8T PRINTED CIRCUIT BOARD INV FAN R112 R502 SWITCHING POWER SUPPLY A1P A3P Z1F A1P MAGNETIC RELAY K2M A1P MOTOR COMPRESSOR A3P Y7S PS R2T POWER MODULE A3P K1R S1P...

Page 504: ...1 ELECTRONIC EXPANSION VALVE MAIN 2 ELECTRONIC EXPANSION VALVE CHARGE ELECTRONIC EXPANSION VALVE SUBCOOL 2 SOLENOID VALVE RMTG X501A 6 X23A HAP Y8S BLK X504A X7A UNIT IN D TO BLU K2R A5P F1 F2 indoor...

Page 505: ...PRINTED CIRCUIT BOARD INV PRINTED CIRCUIT BOARD FAN PRINTED CIRCUIT BOARD FAN PRINTED CIRCUIT BOARD CURRENT SENSOR PRINTED CIRCUIT BOARD GROUND LEAKAGE DETECTOR PUSH BUTTON SWITCH MODE SET RETURN TES...

Page 506: ...2E Z1C 9C K2R K3 K6R K1R K3R M1F R90 R95 R1T K3R PS R10 K4 K4R Q1RP K5R K11R K7R R50 R59 L1R K5R M1C CURRENT SENSOR A7P THERMISTOR SUB COOL HEAT EXC GAS A1P TRANSFORMER 460V 230V THERMISTOR LIQUID A2P...

Page 507: ...T2A N 1 P1 N1 MAGNETIC CONTACTOR M1C A4P H4P BLU ELECTRONIC EXPANSION VALVE SUBCOOL A1P MAGNETIC RELAY E1HC A1P F2 MAGNETIC CONTACTOR M2C t POWER SUPPLY K1R PRINTED CIRCUIT BOARD MAIN THERMISTOR HEAT...

Page 508: ...SAFETY DEVICES INPUT A1P A3P THERMISTOR SUB COOL HEAT EXC GAS 2 A3P THERMISTOR LIQUID 2 A3P THERMISTOR HEAT EXC LIQUID 2 A3P CONNECTOR DIODE BRIDGE A4P PRESSURE SWITCH HIGH A1P ELECTRONIC EXPANSION VA...

Page 509: ...OL 1 ELECTRONIC EXPANSION VALVE MAIN 2 ELECTRONIC EXPANSION VALVE CHARGE ELECTRONIC EXPANSION VALVE SUBCOOL 2 SOLENOID VALVE RMTG X501A 6 X23A HAP Y8S BLK X504A X7A UNIT IN D TO BLU K2R A5P F1 F2 indo...

Page 510: ...TEST FLICKERING MALFUNCTION DETECTION LIGHT UP PILOT LAMP SERVICE MONITOR GREEN A1P A2P MAGNETIC RELAY M1C A3P MAGNETIC RELAY Y5S A2P MAGNETIC RELAY Y6S A2P X1A R1T BS3 Q1RP X4A A4P Y8S BLU M BLU A2P...

Page 511: ...PHASE REVERSAL DETECT CIRCUIT A1P Y3S R8T PRINTED CIRCUIT BOARD INV FAN R112 R502 SWITCHING POWER SUPPLY A1P A3P Z1F A1P MAGNETIC RELAY K2M A1P MOTOR COMPRESSOR A3P Y7S PS R2T POWER MODULE A3P K1R S1...

Page 512: ...ts the possibility of reversed phase lose phase momentary blackout or the power goes on and off while the product is operating attach a reversed phase protection circuit locally Running the product in...

Page 513: ...this system consists of the equipment utilizing the multiple power sources 10 The capacity of UNIT1 must be larger than UNIT2 when the power source is connected in series between the units 11 If there...

Page 514: ...possibility of reversed phase lose phase momentary blackout or the power goes on and off while the product is operating attach a reversed phase protection circuit locally Running the product in rever...

Page 515: ...is system consists of the equipment utilizing the multiple power sources 10 The capacity of UNIT1 must be larger than UNIT2 when the power source is connected in series between the units 11 If there e...

Page 516: ...ials to be procured on the site must comply with the applicable local and national codes 2 Use copper conductors only 3 As for details see wiring diagram 4 Install ground fault circuit interrupter for...

Page 517: ...1 All wiring components and materials to be procured on the site must comply with the applicable local and national codes 2 Use copper conductors only 3 As for details see wiring diagram 4 Install gr...

Page 518: ...erials to be procured on the site must comply with the applicable local and national codes 2 Use copper conductors only 3 As for details see wiring diagram 4 Install ground fault circuit interrupter f...

Page 519: ...1 All wiring components and materials to be procured on the site must comply with the applicable local and national codes 2 Use copper conductors only 3 As for details see wiring diagram 4 Install gro...

Page 520: ...LATION MANUAL ATTACHED THE UNIT 5 REMOTE CONTROLLER MODEL VARIES ACCORDING TO THE COMBINATION SYSTEM CONFIRM ENGINEERING MATERIALS AND CATALOGS ETC BEFORE CONNECTING 6 SYMBOLS SHOW AS FOLLOWS RED RED...

Page 521: ...Wiring Diagrams for Reference SiUS34 801A_b 506 Appendix FXDQ07M 09M 12M 18M 24MVJU FXSQ12M 18M 24M 30M 36M 48MVJU 3D050501A 3D043177A...

Page 522: ...SiUS34 801A_b Wiring Diagrams for Reference Appendix 507 FXMQ30M 36M 48MVJU FXAQ07M 09M 12M 18M 24MVJU 3D043176A 3D046039C...

Page 523: ...Wiring Diagrams for Reference SiUS34 801A_b 508 Appendix FXHQ12M 24M 36M FXLQ12M 18M 24MVJU FXNQ12M 18M 24MVJU 3D048116 3D045644A...

Page 524: ...ELECTRIC EXPANSION VALVE SUB SUCTION DS1 DS2 ELECTRIC EXPANSION VALVE MAIN SUCTION TERMINAL STRIP C H SELECTOR SWITCHING POWER SUPPLY A1P TERMINAL STRIP POWER X2A HAP CONNECTOR WIRING EXTERNAL CONTRO...

Page 525: ...t charge Y2E Fully closed 0pls Fully open 480pls Electronic expansion valve Subcool Y3E Fully closed 0pls Fully open 480pls Pressure protection Highpressure switch For M1C S1PH OFF 580 psi ON 435 21 7...

Page 526: ...valve Subcool Y2E Fully closed 0pls Fully open 480pls Electronic expansion valve Refrigerant charge EV 0 480pls Pressure protection Highpressure switch For M1C S1PH OFF 580 psi ON 435 21 75psi For M2...

Page 527: ...losed 0pls Fully open 480pls Electronic expansion valve Subcool Y3E Fully closed 0pls Fully open 480pls Pressure protection Highpressure switch For M1C S1PH OFF 580 psi ON 435 21 75psi For M2C S2PH Lo...

Page 528: ...closed 0pls Fully open 480pls Electronic expansion valve Subcool Y3E Fully closed 0pls Fully open 480pls Pressure protection Highpressure switch For M1C S1PH OFF 580 psi ON 435 21 75psi For M2C S2PH O...

Page 529: ...3T 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 Parts Name Symbol Model Remark FXZQ 0...

Page 530: ...2T ST8602A 4 6 L800 20k 77 F Others Float Switch S1L FS 0211 Fuse F1U 250V 5A 5 2 Transformer T1R TR25H25R0 Parts Name Symbol Model Remark FXSQ 12MVJU FXSQ 18MVJU FXSQ 24MVJU FXSQ 30MVJU FXSQ 36MVJU F...

Page 531: ...63W 1 130W Thermal protector 266 F OFF 176 F ON Capacitor for Fan Motor C1R 3 0 F 450V 9 0 F 450V Swing Motor M1S MT8 L 3P058751 1 AC200 240V Thermistors Thermistor Return Air R1T ST8601A 1 4 L250 20...

Page 532: ...5 9 8 L2500 20k 77 F Thermistor for Heat Exchanger R2T ST8602A 9 6 L2500 20k 77 F Others Fuse F1U AC250V 5A Transformer T1R TR25H25R0 Parts Name Symbol Model Remark FXNQ 12MVJU FXNQ 18MVJU FXNQ 24MVJU...

Page 533: ...o Function intelligent 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...

Page 534: ...Max 8 branch KHRP26M72H Max 8 branch KHRP26M73HU Max 8 branch Refnet joint Model KHRP26M22T KHRP26M33T KHRP26M22T KHRP26M33T KHRP26M72TU KHRP26M22T KHRP26M33T KHRP26M72TU KHRP26M73TU Outdoor unit mul...

Page 535: ...gure below Pattern 1 Pattern 2 Prohibited pattern Change to pattern 1 or pattern 2 to indoor unit to indoor unit to indoor unit to indoor unit Piping between outside units to indoor unit Piping betwee...

Page 536: ...indoor unit to indoor unit Oil remains in the unit A when system stops Change as shown in the figure below Rising height 8 in or more Unit B Unit B Unit A Unit A Unit A Unit B Unit B Unit A Unit A Uni...

Page 537: ...Piping Installation Point SiUS34 801A_b 522 Appendix...

Page 538: ...41 0 5 51 09 131 0 55 6 41 42 8 6 48 61 132 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 3...

Page 539: ...1 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...

Page 540: ...L 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 O...

Page 541: ...a multiple tester Items to be prepared 1 Multiple tester Prepare the analog of multiple tester For the digital multiple tester check the diode function Test points 1 Turn OFF the power supply Then af...

Page 542: ...ing It may take time to determine the resistance due to capacitor charge 4 U P3 0 3 to 0 7V 5 V P3 5 V P3 6 W P3 6 W P3 7 N3 U 7 N3 U 8 N3 V 8 N3 V 9 N3 W 9 N3 W 10 U N3 2 to 15k 10 U N3 Not less than...

Page 543: ...Pressure Sensor SiUS34 801A_b 528 Appendix...

Page 544: ...b c d e o 540 ft Example 6 a b h 540 ft 8 a i j 540 ft Example 8 a i 540 ft Equivalent pipe length between outside unit 2 and indoor unit 620 ft Note 1 Assume eqivalent pipe length of REFNET joint to...

Page 545: ...otal capacity index 72 72 111 111 Number of outside unit 2 units Connecting piping kit name BHFP22P100U Refrigerant branch kit name KHRP26M22H or KHRP26M33H KHRP26M33H KHRP26M72H Example for indoor un...

Page 546: ...ft of liquid piping size at 1 4 0 249 0 121 0 040 0 175 0 081 0 015 HEAT PUMP SYSTEM MODEL NAME MODEL NAME THE AMOUNT OF REFRIGERANT RXYQ72 120PYDN RXYQ72 120PTJU RXYQ144PTJU RXYQ144 192PYDN RXYQ168 1...

Page 547: ...b 540 ft 8 a m n p 540 ft Example 8 a o 540 ft Equivalent pipe length between outside unit 2 and indoor unit 620 ft Note 1 Assume eqivalent pipe length of REFNET joint to be 1 6 ft that of REFNET hea...

Page 548: ...it name BHFP26P90U 3 pipes KHRP25M33H KHRP25M72H 2 pipes KHRP26M22H or KHRP26M33H KHRP26M33H KHRP26M72H Refrigerant branch kit name Example for indoor units connected downstream Example REFNET joint C...

Page 549: ...al length ft of liquid piping size at 1 4 0 249 0 121 0 040 0 175 0 081 0 015 1 02 HEAT RECOVER SYSTEM MODEL NAME THE AMOUNT OF REFRIGERANT REYQ72 120PYDN REYQ72 144PTJU REYQ144 192PYDN REYQ168 192PTJ...

Page 550: ...SiUS34 801A_b Precautions for New Refrigerant R 410A 535 Part 7 Precautions for New Refrigerant R 410A 1 Precautions for New Refrigerant R 410A 536 1 1 Service Tools 538...

Page 551: ...t 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 19716...

Page 552: ...r New Refrigerant R 410A 537 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 Specif...

Page 553: ...ame 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 with reverse flow preventive function 2To use existi...

Page 554: ...o 0 5 32mm was provided for flaring For R 410A air conditioners perform pipe flaring with a pipe extension margin of 1 32 to 1 5 32mm l For clutch types only a conventional tool with pipe extension ma...

Page 555: ...m 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 micro...

Page 556: ...nce HFCs do not contain chlorine the 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...

Page 557: ...ssure 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 coat...

Page 558: ...nt R 410A Precautions for New Refrigerant R 410A 543 Regarding purchasing of service tools please contact following address Daikin U S Corporation Dallas Office 1645 Wallace Dr Ste 110 Carrollton TX 7...

Page 559: ...Precautions for New Refrigerant R 410A SiUS34 801A_b 544 Precautions for New Refrigerant R 410A...

Page 560: ...ply Cable 461 Check the Factors of Overheat Operation 462 Concept of Inverter related Malfunction Codes 474 Connectable Indoor Unit 6 Connectable Indoor Units Number and Capacity 6 Cooling Only Heat p...

Page 561: ...Pressure Sensor 391 Malfunction of Moving Part of Electronic Expansion Valve Y1E Y5E 372 Malfunction of Outdoor Unit Fan Motor 369 Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor R5T or R...

Page 562: ...eration Mode 141 REYQ144PTJU 149 REYQ144PYDN 157 REYQ168P 192P 165 REYQ216P 240P 173 REYQ72P 96P 120P 141 RXYQ144 168 192 216 240PYDN RXYQ168 192 216 240PTJU 34 RXYQ144PTJU 28 RXYQ72 96 120PYDN PTJU 2...

Page 563: ...SiUS34 801A_b iv Index...

Page 564: ...trol Modes How to Select Operation Mode 315 Current Sensor Malfunction 380 D Defective Inverter PC Board 393 Detailed Setting Procedure of Low Noise Operation and Demand Control 112 261 Discharge Pipe...

Page 565: ...3 Malfunction of Thermistor R1T for Outdoor Air 379 Malfunction of Thermistor R1T for Suction Air 356 Malfunction of Thermistor R2T for Heat Exchanger 354 Malfunction of Thermistor R3T for Gas Pipes 3...

Page 566: ...ting of Low Noise Operation and Demand Operation 108 257 Image of Operation in the Case of A 109 111 258 260 Image of Operation in the Case of A and B 109 111 258 260 Image of Operation in the Case of...

Page 567: ...Q72 96 120PTJU RXYQ144 240PYDN RXYQ168 240PTJU REYQ72 96 120PYDN REYQ72 96 120 144PTJU RXYQ144PTJU REYQ144 240PYDN REYQ168 240PTJU SiUS34 801A_b Printed in U S A 11 2009 AK Specifications designs and...

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