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Daikin VRV II RXYQ5MATL Service Manual Download Page 211

Troubleshooting by Indication on the Remote Controller

Si39-504

200

Troubleshooting

3.26

“

J5

” 

Outdoor Unit: 

Malfunction of Thermistor (R2T) for 

Suction Pipe

Remote 
Controller 
Display

J5

Applicable 
Models

RXYQ5MA~48MA

Method of 
Malfunction 
Detection

Malfunction is detected from the temperature detected by the suction pipe temperature 
thermistor.

Malfunction 
Decision 
Conditions

When a short circuit or an open circuit in the suction pipe temperature thermistor is detected.

Supposed 
Causes

„

Defect of thermistor (R2T) for outdoor unit suction pipe

„

Defect of outdoor unit PC board (A1P)

Troubleshooting

∗

 Refer to “Thermistor Resistance / Temperature Characteristics” table on P299.

(V3073)

Caution

Be sure to turn off power switch before connect or disconnect connector, 
or parts damage may be occurred.

Resistance

is normal when
measured after

disconnecting the thermistor

(R2T) from the outdoor 

unit PC board. 

(3.5k

Ω 

~

360k

Ω

)

Replace outdoor unit PC board 
(A1P).

Connect the connector and turn on 
again. 

NO

NO

Replace the thermistor R2T.

YES

YES

Connector

is connected to

X37A, of outdoor unit 

PC board.

(A1P)

Summary of Contents for VRV II RXYQ5MATL

Page 1: ...RXYQ5 48MAYL E TL E R 410A Heat Pump 60Hz Si39 504 Printed in Singapore 01 2006 COS Service Manual R 410A Heat Pump RXYQ5 48MAYL E TL E Si39 504...

Page 2: ...Refrigerant Circuit 44 1 1 RXYQ5MA 44 1 2 RXYQ8MA 10MA 12MA 46 1 3 RXYQ14MA 16MA 48 2 Functional Parts Layout 50 2 1 RXYQ5MA 50 2 2 RXYQ8MA 10MA 12MA 51 2 3 RXYQ14MA 16MA 52 3 Refrigerant Flow for Eac...

Page 3: ...vention 101 6 7 Heater Control 102 6 8 List of Swing Flap Operations 103 Part 5 Test Operation 105 1 Test Operation 106 1 1 Procedure and Outline 106 1 2 Operation When Power is Turned On 110 2 Outdoo...

Page 4: ...for Outdoor Air 197 3 24 J2 Outdoor Unit Current Sensor Malfunction 198 3 25 J3 Outdoor Unit Malfunction of Discharge Pipe Thermistor R3 R31 33T 199 3 26 J5 Outdoor Unit Malfunction of Thermistor R2T...

Page 5: ...4 3 MA Improper Combination of Optional Controllers for Centralized Control 235 4 4 MC Address Duplication Improper Setting 237 5 Troubleshooting OP Schedule Timer 238 5 1 UE Malfunction of Transmiss...

Page 6: ...7 Thermistor Resistance Temperature Characteristics 299 8 Pressure Sensor 301 9 Method of Replacing The Inverter s Power Transistors and Diode Modules 302 Part 8 Precautions for New Refrigerant R 410A...

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

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

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

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

Page 11: ...eries 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 thei...

Page 12: ...4 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 Selec...

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

Page 14: ...FXFQ63M FXFQ80M FXFQ100M FXFQ125M Ceiling Suspended Type FXHQ32M FXHQ63M FXHQ100M Ceiling Mounted Cassette Corner Type FXKQ25M FXKQ32M FXKQ40M FXKQ63M Wall Mounted Type FXAQ20M FXAQ25M FXAQ32M FXAQ40...

Page 15: ...ion 2 2 Outdoor Units 5HP 8 10HP 12 14 16HP 18 20HP 22 24 26HP 28 30 32HP 34 36HP 38 40 42HP 44 46 48HP RXYQ5MA RXYQ8MA 10MA RXYQ18MA 20MA RXYQ22MA 24MA 26MA RXYQ28MA 30MA 32MA RXYQ34MA 36MA RXYQ38MA...

Page 16: ...aikin Outdoor Unit Multi Connection Piping Kit is required System Capacity Number of units Module Outdoor Unit Multi Connection Piping Kit Option 5 8 10 12 14 16 5HP 1 8HP 1 10HP 1 12HP 1 14HP 1 16HP...

Page 17: ...e indoor units 20 20 22 32 32 32 Total capacity of connectable indoor units kW 25 2 65 5 28 0 72 8 30 8 80 0 34 0 88 4 36 5 94 9 39 3 102 1 HP 30HP 32HP 34HP 36HP 38HP 40HP System name RXYQ30MA RXYQ32...

Page 18: ...32M 40M 50M 63M 80M 125M VE Ceiling Mounted Cassette Type Multi Flow FXFQ 25M 32M 40M 50M 63M 80M 100M 125M Ceiling Mounted Cassette Corner Type FXKQ 25M 32M 40M 63M Slim Ceiling Mounted Duct Type FXD...

Page 19: ...Workability Equalizer oil pipe for multi outdoor unit system z NONE z YES Procedure for calculating refrigerant refilling quantity z Refilling quantity due to piping length Adjustment quantity accord...

Page 20: ...Si39 504 Specifications 9 Part 2 Specifications 1 Specifications 10 1 1 Outdoor Units 10 1 2 Indoor Units 21...

Page 21: ...metically Sealed Scroll Type Piston Displacement m h 13 72 13 72 10 53 Number of Revolutions r p m 6480 6480 2900 Motor Output Number of Units kW 3 0 1 0 7 4 5 1 Starting Method Direct on line Inverte...

Page 22: ...l Type Hermetically Sealed Scroll Type Piston Displacement m h 13 72 10 53 13 72 10 53 Number of Revolutions r p m 6480 2900 6480 2900 Motor Output Number of Units kW 1 6 4 5 1 2 8 4 5 1 Starting Meth...

Page 23: ...tically Sealed Scroll Type Piston Displacement m h 13 72 10 53 10 53 13 72 10 53 10 53 Number of Revolutions r p m 6480 2900 2 6480 2900 2 Motor Output Number of Units kW 1 1 4 5 4 5 1 2 7 4 5 4 5 1 S...

Page 24: ...in Coil Cross Fin Coil Comp Type Hermetically Sealed Scroll Type Hermetically Sealed Scroll Type Piston Displacement m h 13 72 10 53 2 13 72 10 53 2 Number of Revolutions r p m 6480 2900 2 6480 2900 2...

Page 25: ...p Type Hermetically Sealed Scroll Type Hermetically Sealed Scroll Type Piston Displacement m h 13 72 10 53 2 13 72 10 53 13 72 10 53 10 53 Number of Revolutions r p m 6480 2900 2 6480 2900 6480 2900 2...

Page 26: ...ally Sealed Scroll Type Hermetically Sealed Scroll Type Piston Displacement m h 13 72 10 53 13 72 10 53 10 53 13 72 10 53 13 72 10 53 10 53 Number of Revolutions r p m 6480 2900 6480 2900 2 6480 2900...

Page 27: ...oil Comp Type Hermetically Sealed Scroll Type Hermetically Sealed Scroll Type Piston Displacement m h 13 72 10 53 10 53 2 13 72 10 53 10 53 2 Number of Revolutions r p m 6480 2900 2 2 6480 2900 2 2 Mo...

Page 28: ...Type Hermetically Sealed Scroll Type Hermetically Sealed Scroll Type Piston Displacement m h 13 72 10 53 2 13 72 10 53 10 53 13 72 10 53 2 13 72 10 53 10 53 Number of Revolutions r p m 6480 2900 2 648...

Page 29: ...aled Scroll Type Hermetically Sealed Scroll Type Piston Displacement m h 13 72 10 53 2 13 72 10 53 10 53 13 72 10 53 13 72 10 53 10 53 2 Number of Revolutions r p m 6480 2900 2 6480 2900 2 6480 2900 6...

Page 30: ...l Comp Type Hermetically Sealed Scroll Type Hermetically Sealed Scroll Type Piston Displacement m h 13 72 10 53 13 72 10 53 10 53 2 13 72 10 53 13 72 10 53 10 53 2 Number of Revolutions r p m 6480 290...

Page 31: ...nger Cross Fin Coil Cross Fin Coil Comp Type Hermetically Sealed Scroll Type Hermetically Sealed Scroll Type Piston Displacement m h 13 72 10 53 10 53 3 13 72 10 53 10 53 3 Number of Revolutions r p m...

Page 32: ...thane Foam Piping Connections Liquid Pipes mm 6 4 Flare Connection 6 4 Flare Connection 6 4 Flare Connection 6 4 Flare Connection Gas Pipes mm 12 7 Flare Connection 12 7 Flare Connection 12 7 Flare Co...

Page 33: ...rethane Foam Piping Connections Liquid Pipes mm 6 4 Flare Connection 9 5 Flare Connection 9 5 Flare Connection 9 5 Flare Connection Gas Pipes mm 12 7 Flare Connection 15 9 Flare Connection 15 9 Flare...

Page 34: ...urethane Form Polyurethane Form Polyurethane Form Polyurethane Form Piping Connections Liquid Pipes mm 6 4 Flare Connection 6 4 Flare Connection 6 4 Flare Connection 6 4 Flare Connection Gas Pipes mm...

Page 35: ...hermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Polyurethane Form Polyurethane Form Polyurethane Form Polyurethane Form Piping Connections Liquid Pipes mm 9 5 Flare Conne...

Page 36: ...iquid Pipes mm 6 4 Flare Connection 6 4 Flare Connection 6 4 Flare Connection 9 5 Flare Connection Gas Pipes mm 12 7 Flare Connection 12 7 Flare Connection 12 7 Flare Connection 15 9 Flare Connection...

Page 37: ...m min 9 5 7 5 9 5 7 5 10 5 8 5 External Static Pressure Pa 44 15 5 44 15 5 44 15 5 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating M...

Page 38: ...H L m min 10 5 8 5 12 5 10 0 16 5 13 0 External Static Pressure Pa 44 15 5 44 15 5 44 15 5 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and H...

Page 39: ...Air Flow Rate H L m min 9 5 7 5 9 5 7 5 10 5 8 5 External Static Pressure Pa 44 15 5 44 15 5 44 15 5 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cool...

Page 40: ...0 1 Air Flow Rate H L m min 10 5 8 5 12 5 10 0 16 5 13 0 External Static Pressure Pa 44 15 5 44 15 5 44 15 5 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat...

Page 41: ...60 Hz Pa 73 24 10 73 24 10 86 42 10 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heatin...

Page 42: ...60 Hz Pa 88 29 10 88 41 10 122 66 10 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heati...

Page 43: ...60 Hz Pa 147 92 136 83 78 20 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Micro...

Page 44: ...H L m min 14 11 5 14 11 5 14 11 5 19 5 16 cfm 494 406 494 406 494 406 688 565 External Static Pressure 50 60Hz Pa 157 157 118 108 4 157 157 118 108 4 157 157 118 108 4 157 160 108 98 4 Drive Direct Dr...

Page 45: ...Fan Motor Output Number of Units W 270 1 430 1 380 2 380 2 Air Flow Rate H L m min 29 23 36 29 58 50 72 62 cfm 1 024 812 1 271 1 024 2 047 1 765 2 542 2 189 External Static Pressure 50 60Hz Pa 157 172...

Page 46: ...rect Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and H...

Page 47: ...cfm 265 159 282 177 318 194 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Micropr...

Page 48: ...14 cfm 424 318 530 424 671 494 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Mic...

Page 49: ...247 212 282 212 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor The...

Page 50: ...88 300 494 388 565 424 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocess...

Page 51: ...247 212 247 212 282 212 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microproces...

Page 52: ...12 cfm 388 300 494 388 565 424 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Mic...

Page 53: ...Specifications Si39 504 42 Specifications...

Page 54: ...efrigerant Circuit 1 Refrigerant Circuit 44 1 1 RXYQ5MA 44 1 2 RXYQ8MA 10MA 12MA 46 1 3 RXYQ14MA 16MA 48 2 Functional Parts Layout 50 2 1 RXYQ5MA 50 2 2 RXYQ8MA 10MA 12MA 51 2 3 RXYQ14MA 16MA 52 3 Ref...

Page 55: ...ssure when a malfunction occurs this switch is activated at high pressure of 4 0 MPa or more to stop the compressor operation S Fusible plug In order to prevent the increase of pressure when abnormal...

Page 56: ...Si39 504 Refrigerant Circuit Refirgerant Circuit 45 RXYQ5MA 3D048203 2 4 3 5 K J S E D M T N P A G O 1 W V...

Page 57: ...ressor operation Q S2PH HP pressure switch For STD compressor 1 S Fusible plug In order to prevent the increase of pressure when abnormal heating is caused by fire or others the fusible part of the pl...

Page 58: ...Si39 504 Refrigerant Circuit Refirgerant Circuit 47 RXYQ8MA 10MA 12MA 3D048033A 1 4 N Q M 3 8 6 D E S F J 7 U L P A B O 2 V X W...

Page 59: ...plug In order to prevent the increase of pressure when abnormal heating is caused by fire or others the fusible part of the plug is molten at a temperature of 70 to 75 C to release the pressure into t...

Page 60: ...Si39 504 Refrigerant Circuit Refirgerant Circuit 49 RXYQ14MA 16MA 3D048034A 1 4 N R C Q M 3 8 6 D E S F J 5 7 U L P A B O G 2 X Y Z V W...

Page 61: ...S Thermistor INV discharge pipe R3T High pressure switch High pressure protection INV S1PH Fan motor M1F Pressure sensor High pressure S1NPH Thermistor Outdoor air R1T Crank case heater INV E1HC Compr...

Page 62: ...gh pressure S1NPH Thermistor Outdoor air R1T Compressor INV M1C Compressor STD1 M2C Thermistor Suction pipe R2T Pressure sensor Low pressure S1NPL Thermistor Subcooling heat exchanger outlet R5T Therm...

Page 63: ...essure sensor High pressure S1NPH Thermistor Outdoor air R1T Compressor INV M1C Compressor STD1 M2C Compressor STD2 M3C Thermistor Suction pipe R2T Pressure sensor Low pressure S1NPL Thermistor Subcoo...

Page 64: ...emperature high pressure gas High temperature high pressure liquid Low temperature low pressure Heat exchanger Electronic expansion valve EV Nomal control Filter Filter Fan Heat exchanger pipe Receive...

Page 65: ...ressure gas High temperature high pressure liquid Low temperature low pressure Heat exchanger Electronic expansion valve EV Nomal control Filter Filter Fan Heat exchanger pipe Receiver Solenoid valve...

Page 66: ...lve Filter Filter Heat exchanger Fan Electronic expansion valve Filter Filter Filter Filter Filter Filter Heat exchanger Fan Electronic expansion valve Filter Filter Heat exchanger Fan Heat exchanger...

Page 67: ...igh temperature high pressure liquid Low temperature low pressure Electronic expansion valve EV Nomal control Filter Filter Fan Heat exchanger pipe Receiver Solenoid valve Filter Capillary tube 4 way...

Page 68: ...Filter Filter Fan Heat exchanger pipe Receiver Solenoid valve Solenoid valve Check valve Check valve Check valve Solenoid valve Check valve Filter Filter Filter Filter Filter Filter Filter Filter Fil...

Page 69: ...EV Nomal control Filter Filter Fan Heat exchanger pipe Receiver Solenoid valve Solenoid valve Check valve Check valve Check valve Solenoid valve Check valve Filter Filter Filter Filter Filter Filter F...

Page 70: ...igh pressure liquid Low temperature low pressure Heat exchanger Electronic expansion valve Filter Filter Fan Heat exchanger pipe Receiver Solenoid valve Solenoid valve Check valve Check valve Check va...

Page 71: ...lectronic expansion valve EV Nomal control Filter Filter Fan Heat exchanger pipe Receiver Solenoid valve Solenoid valve Check valve Check valve Check valve Solenoid valve Check valve Filter Filter Fil...

Page 72: ...e Receiver Solenoid valve Solenoid valve Check valve Check valve Check valve Check valve Check valve Solenoid valve Check valve Filter Filter Filter Filter Filter Filter Filter Filter Filter Filter Fi...

Page 73: ...pe Receiver Solenoid valve Solenoid valve Check valve Check valve Check valve Check valve Check valve Solenoid valve Check valve Filter Filter Filter Filter Filter Filter Filter Filter Filter Filter F...

Page 74: ...ipe Receiver Solenoid valve Solenoid valve Check valve Check valve Check valve Check valve Check valve Solenoid valve Check valve Filter Filter Filter Filter Filter Filter Filter Filter Filter Filter...

Page 75: ...e Solenoid valve Check valve Check valve Check valve Check valve Check valve Solenoid valve Check valve Filter Filter Filter Filter Filter Filter Filter Filter Filter Filter Filter Electronic expansio...

Page 76: ...ior to Startup 85 4 Protection Control 86 4 1 High Pressure Protection Control 86 4 2 Low Pressure Protection Control 87 4 3 Discharge Pipe Protection Control 88 4 4 Inverter Protection Control 89 4 5...

Page 77: ...tected by high pressure sensor Pe S1NPL Value detected by low pressure sensor SH Evaporator outlet superheat SHS Target evaporator outlet superheat SVG Y2S Solenoid valve for discharging gas from rece...

Page 78: ...ion Compressor PI control Motorized valve PI control Protection control Indoor unit thermostat ON Defrost IN conditions are met No Yes Defrosting operation Cooling or heating operation Outdoor unit ro...

Page 79: ...rotection PI control High pressure protection Low pressure protection Td protection INV protection Outdoor unit fan M1F Cooling fan control Step 7 or 8 Four way valve 20S1 Y1R OFF ON Main motorized va...

Page 80: ...lue Varies depending on Te setting operating frequency etc On multi outdoor unit systems this control is made according to values of the first priority unit which is detected with the pressure sensor...

Page 81: ...A RXYQ40MA 42MA 44MA RXYQ24MA 26MA 28MA RXYQ30MA 32MA RXYQ8MA 10MA 12MA RXYQ14MA 16MA INV No 1 INV STD1 No 1 No 2 INV STD1 STD2 INV STD1 No 1 No 3 INV STD1 No 2 No 4 INV STD1 No 1 No 3 INV STD1 STD2 N...

Page 82: ...2 143Hz ON 33 158Hz ON 34 177Hz ON 35 189Hz ON 36 202Hz ON 37 210Hz ON RXYQ14MA 16MA STEP No INV STD1 STD2 1 52Hz OFF OFF 2 57Hz OFF OFF 3 62Hz OFF OFF 4 68Hz OFF OFF 5 74Hz OFF OFF 6 81Hz OFF OFF 7 8...

Page 83: ...N2 35 74Hz 74Hz ON2 36 88Hz 88Hz ON2 37 96Hz 96Hz ON2 38 110Hz 110Hz ON2 39 124Hz 124Hz ON2 40 143Hz 143Hz ON2 41 158Hz 158Hz ON2 42 165Hz 165Hz ON2 43 177Hz 177Hz ON2 44 189Hz 189Hz ON2 45 202Hz 202H...

Page 84: ...STEP No Master unit INV Slave unit1 INV Slave unit2 INV STD 1 52Hz OFF OFF OFF 2 57Hz OFF OFF OFF 3 62Hz OFF OFF OFF 4 68Hz OFF OFF OFF 5 74Hz OFF OFF OFF 6 81Hz OFF OFF OFF 7 88Hz OFF OFF OFF 8 96Hz...

Page 85: ...slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 Depending on the operating conditions of compressors the compressors ma...

Page 86: ...Unit Fans Used to control the revolutions of outdoor unit fans in the steps listed in table below according to condition changes Figures listed above are all those controlled while in standard mode wh...

Page 87: ...iate liquid pressure thus ensuring refrigerant circulation rate to be supplied to indoor units Upper limit of fan revolutions Step 8 Upper limit of outdoor unit fan revolutions Step 7 1 step on outdoo...

Page 88: ...s 2000 pls 2000 pls Subcooling motorized valve EV2 0 pls 0 pls 0 pls Hot gas bypass valve SVP ON RXYQ5MA model OFF RXYQ8 16MA models ON ON Receiver gas discharging valve SVG OFF OFF OFF Non operating...

Page 89: ...erating units perform the operations listed in the table above from the oil return operation Non operating unit stops during oil return preparation operation Actuators are based on RXYQ16MA Outdoor un...

Page 90: ...tion Post oil return operation Compressor Upper limit control 124 Hz ON OFF 1 step increase from 74 Hz OFF OFF to Pc Pe 0 4 MPa time Outdoor unit fan STEP7 or STEP8 OFF STEP8 Four way valve ON OFF ON...

Page 91: ...ts perform the operations listed in the table above from the Defrost operation Non operating unit stops during Defrost preparation operation Actuators are based on RXYQ16MA Outdoor unit actuator Defro...

Page 92: ...on RXYQ16MA Actuator Master unit operation Slave unit operation Compressor 210 Hz OFF OFF OFF Outdoor unit fan Fan control OFF Four way valve OFF OFF Main motorized valve EV1 2000 pls 0 pls Subcoolin...

Page 93: ...ing in the compressor oil in the stopped mode this mode is used to control the crankcase heater Actuator Operation Remarks Compressor OFF Outdoor unit fan Ta 30 C STEP4 Ta 30 C OFF Four way valve Hold...

Page 94: ...nit fan OFF Four way valve Holds Main motorized valve EV1 0 pls Subcooling motorized valve EV2 0 pls Hot gas bypass valve SVP OFF Receiver gas discharging valve SVG OFF Non operating unit liquid pipe...

Page 95: ...STEP4 OFF Four way valve OFF Holds Main motorized valve EV1 150 pls to 300 pls 0 pls Subcooling motorized valve EV2 0 pls 0 pls Hot gas bypass valve SVP ON ON Receiver gas discharging valve SVG OFF OF...

Page 96: ...Subcooling motorized valve EV2 0 pls Hot gas bypass valve SVP OFF In the case of RXYQ5M this valve turns ON Receiver gas discharging valve SVG OFF Non operating unit liquid pipe stop valve SVSL ON En...

Page 97: ...er limit frequency 210 Hz High pressure limited Pc 3 47MPa Pc 3 64MPa Pc 3 24MPa Pc 3 55MPa STD compressor standby for 5 mins Pc HP pressure sensor detection value for each outdoor unit When occurring...

Page 98: ...andby Low pressure limited All STD compressors stop Master unit 52 Hz OFF OFF Slave unit Stop Pe 0 25MPa Pe 0 39MPa Pe 0 07MPa Pe LP pressure sensor detection value for master unit When occurring 4 ti...

Page 99: ...it frequency 1 step down from current compressor frequency INV upper limit frequency 1 step up from current compressor frequency RXYQ5MA 52Hz Other models INV62 Hz OFF OFF HTdi 115 C Tp 140 C or Every...

Page 100: ...imit frequency 210 Hz INV upper limit frequency 1 step down from current compressor frequency INV upper limit frequency 1 step up from current compressor frequency Invertercurrent 13 5A YL or 25 1A TL...

Page 101: ...ow into the suction side to reduce the discharge pipe temperature for the compressor protection STD compressor ON CT detection current value 15 0A YL or 36 0A TL STD compressor OFF for 30 min Demand t...

Page 102: ...ample The following diagram shows outdoor unit rotation in combination of 3 outdoor units Master unit slave unit 1 and slave unit 2 in this section are the names for installation They are determined i...

Page 103: ...MA to 16MA Procedure 1 Press and hold the MODE button BS1 for a period of 5 seconds or more 2 Press the SET button BS2 19 times 3 Press the RETURN button BS3 once 4 Press the SET button BS2 once 5 Pre...

Page 104: ...F3 H7 H9 J2 J3 J5 J6 J7 J9 JA JC L3 L4 L5 L8 L9 LC U2 UJ Emergency operation with settings in service mode Inhibition of operation is set with each outdoor unit Make the following settings with the m...

Page 105: ...Inhibition of operation is set outdoor unit rotation is not functional 5 3 Demand Operation In order to save the power consumption the capacity of outdoor unit is saved with control forcibly by using...

Page 106: ...tton 1 4 given in the figure below 6 1 1 When the Float Switch is Tripped While the Cooling Thermostat is ON 1 The objective of residual operation is to completely drain any moisture adhering to the f...

Page 107: ...set even after the 5 minutes operation 5 seconds stop 5 minutes operation cycle ends operation continues until the switch is reset 6 1 4 When the Float Switch is Tripped and AF is Displayed on the Rem...

Page 108: ...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 prevent...

Page 109: ...temperature Ex When cooling Assuming the preset temperature in the figure above is 24 C and the suction temperature has changed from 18 C to 30 C A F This example also assumes there are several other...

Page 110: ...be used so that suction temperature is higher than the preset temperature Ex When heating Assuming the preset temperature in the figure above is 24 C and the suction temperature has changed from 18 C...

Page 111: ...mation on page onward 6 5 Thermostat Control in Dry Operation While in dry operation the thermostat control is conducted according to a suction temperature at the time of starting the dry operation As...

Page 112: ...e unit enters freeze prevention operation in accordance with the following conditions and is also set in accordance with the conditions given below Conditions for starting freeze prevention Temperatur...

Page 113: ...converting the heater temperature into the condensing pressure equivalent saturated temperature Tc according to the temperature detection through the high pressure sensor SINPH of the outdoor unit Fan...

Page 114: ...tat OFF mode for prevention of cold air Swing LL Horizontal Horizontal Horizontal Wind direction set LL Horizontal Horizontal Horizontal Stop Swing OFF Horizontal Horizontal Totally closed Wind direct...

Page 115: ...Outline of Control Indoor Unit Si39 504 104 Function...

Page 116: ...peration 1 Test Operation 106 1 1 Procedure and Outline 106 1 2 Operation When Power is Turned On 110 2 Outdoor Unit PC Board Layout 111 3 Field Setting 112 3 1 Field Setting from Remote Controller 11...

Page 117: ...erant charge with the stop valve open and the power supply OFF the refrigerant may be mixed in the compressor thus decreasing the insulation resistance Heat the compressor as shown on the right and th...

Page 118: ...ion The H2P blinks during operation and TEST OPERAION and UNDER CENTRALIZED CONTROL are displayed on the remote controller Even if no stop operation is conducted the equipment will automatically stop...

Page 119: ...l the outside panels closed except for the switch box While in the test operation operating sounds such as refrigerant passing sounds or solenoid valve switching sounds may become louder Completion of...

Page 120: ...ing the TEST OPERATION button at the first test operation after installation the malfunction code U3 will be displayed Be sure to conduct the check operation according to 1 1 3 Check Operation for det...

Page 121: ...set during operation described above Indoor unit If ON button is pushed during operation described above the UH malfunction indicator blinks Returns to normal when automatic setting is complete Outdo...

Page 122: ...2 Set mode display LED 3 Mode setting switch 1 Service monitor 4 Local setting switch Connection terminal for transmission use DS1 DS2 DS3 HAP V3054 1 Service monitor This monitor blinks while in norm...

Page 123: ...1 62 1 When in the normal mode press the button for a minimum of four seconds and the FIELD SET MODE is entered 2 Select the desired MODE NO with the button 3 During group control when setting by each...

Page 124: ...field set mode 2 Select the desired mode No with the button 3 Pushing the button select the first code No 4 Pushing the button select the second code No 5 Push the timer button and check the settings...

Page 125: ...h indoor unit mode No 20 22 and 23 have been selected push the BS8 BUTTON unit No and select the INDOOR UNIT NO to be set This operation is unnecessary when setting by group 5 Push the BS9 BUTTON set...

Page 126: ...ter sign is not to be displayed Display No display 12 22 0 Optional accessories output selection field selection of output for adaptor for wiring Indoor unit turned ON by thermostat Operationoutput Ma...

Page 127: ...loor standing type Concealed Floor standing type Multi flow Double flow Corner type FXFQ FXCQ FXKQ FXDQ FXSQ FXMQ FXHQ FXAQ FXLQ FXNQ Filter sign Ultra long life filter sign Remote controller thermost...

Page 128: ...air conditioners with the setting the units may start automatically after power failure reset or the main power supply turned on again return to the same operation condition as that of before power fa...

Page 129: ...ing Ceiling height 4 way Outlets 3 way Outlets 2 way Outlets 13 23 0 01 Standard N Lower than 2 7 m Lower than 3 0 m Lower than 3 5 m 02 High Ceiling H Lower than 3 0 m Lower than 3 3 m Lower than 3 8...

Page 130: ...rts high performance filter etc is installed sets to change fan speed for securing air flow rate Follow the instruction manual for the optional parts to enter the setting numbers Setting of the static...

Page 131: ...accept the operation for about one minute with the display of 88 2 While in the normal mode hold down the button for a minimum of 4 seconds The remote controller will enter the FIELD SET MODE 3 Selec...

Page 132: ...to the normal mode Group No Setting Example Caution When turning the power supply on the unit may often not accept any operation while 88 is displaying after all indications were displayed once for ab...

Page 133: ...ation mode setting by remote controller can be set and displayed by operation modes 0 through 19 ON OFF control impossible by remote controller Used when you want to turn on off by central remote cont...

Page 134: ...l by remote controller Controlmode Operation OFF Temperature control Operation mode setting Unified operation individual operation by central remote controller or operation controlled by timer Unified...

Page 135: ...ty setting to ON with No 29 B The low noise operation aforementioned is enabled in nighttime automatic low noise operation mode Start time Selectable in the range of 20 00 to 24 00 hours End time Sele...

Page 136: ...concerned or outdoor unit s concerned and to conduct emergency operation of the system only with operable compressor s or outdoor unit s Make this setting while in Setting mode 2 For system with a si...

Page 137: ...ied out error code UA is displayed and unit can not be operated DS No Item Contents DS1 1 Cool Heat change over setting ON COOL HEAT setting is made with the use of a remote controller mounted to the...

Page 138: ...n of switches HEAT PUMP 5HP RXYQ5MA Set DS2 1 to ON HEAT PUMP 8HP RXYQ8MA Set DS2 1 and DS2 3 to ON HEAT PUMP 10HP RXYQ10MA Set DS2 1 DS2 2 and DS2 3 to ON HEAT PUMP 12HP RXYQ12MA Set DS2 1 and DS2 4...

Page 139: ...2P COOL HEAT select Low noise H6P Demand H7P Multi H8P IND H3P MASTER H4P SLAVE H5P Single outdoor unit system 7 7 8 7 7 7 7 7 Outdoor multi system Master 7 7 8 7 7 7 7 8 Slave 1 7 7 7 7 7 7 7 9 Slave...

Page 140: ...ODE BS1 button to set the system to Setting mode 1 Normally Setting mode 1 is set In case of other status push MODE BS1 button one time and set to Setting mode 1 Check the system for each condition th...

Page 141: ...set and Ending set 24 ENECUT test operation Used to forcedly turn ON the ENECUT Be noted that the ENECUT is only functional with outdoor unit in the stopped state Japanese domestic model only 25 Setti...

Page 142: ...uired 39 Emergency operation Setting for the slave unit 1 operation prohibition in multi outdoor unit system 40 Emergency operation Setting for the slave unit 2 operation prohibition in multi outdoor...

Page 143: ...n setting 8 7 7 8 7 8 8 OFF 8777778 ON 8777787 12 External low noise demand setting 8 7 7 8 8 7 7 External low noise demand NO 8777778 External low noise demand YES 8777787 13 Airnet address 8 7 7 8 8...

Page 144: ...actory setting 8777877 28 Power transistor check mode 8 7 8 8 8 7 7 OFF 8777778 ON 8777787 29 Capacity precedence setting 8 7 8 8 8 7 8 OFF 8777778 ON 8777787 30 Demand setting 1 8 7 8 8 8 8 7 60 dema...

Page 145: ...Lower 4 digits upper 13 Number of terminal blocks 9 7 7 8 8 7 8 Lower 4 digits lower 14 Contents of malfunction the latest 8 7 7 8 8 8 7 Malfunction code table Refer page 168 169 15 Contents of malfun...

Page 146: ...which translates to 16 4 2 22 base 10 number In other words the address is 22 The number of terminal blocks for No 12 and 13 is expressed as an 8 digit binary number which is the combination of four...

Page 147: ...ed remote controllers After the check operation CHANGEOVER UNDER CONTROL is flashing in all connected remote controllers Select an indoor unit to be used as the master unit in accordance with the requ...

Page 148: ...y for Each Outdoor Unit System by Cool Heat Switching Remote Controller It does not matter whether or not there is outdoor outdoor unit wiring Set outdoor unit PC board DS1 1 to OUT factory set Set co...

Page 149: ...for outdoor unit on either the outdoor outdoor indoor outdoor transmission line Set outdoor unit PC board DS1 1 to IN factory set In setting mode 1 set the outdoor unit you want to give cool heat sele...

Page 150: ...oor outdoor transmission line Mount the COOL HEAT selection remote controller to the master outdoor unit for the unified control Set the DS1 1 on the PC board of master outdoor unit to OUT In setting...

Page 151: ...ches the unified cool heat address of outdoor unit main PC board Address setting for e and f Set lower 5 digits with binary number No 0 to No 31 Address No Outdoor unit PC board LED Set with setting m...

Page 152: ...e low noise operation is carried out automatically at night The external control adapter for outdoor unit is not required 1 While in Setting mode 2 select the setting condition i e Mode 1 Mode 2 or Mo...

Page 153: ...Field Setting Si39 504 142 Test Operation Image of operation in the case of A Image of operation in the case of B Image of operation in the case of A and B...

Page 154: ...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 B When the normal demand operation is carried out Use of the external co...

Page 155: ...set to ON OFF has been set at factory the power consumption can be set with the Demand 1 level setting 70 of rated power consumption has been set at factory Power consumption Rated power consumption 8...

Page 156: ...1P on c In setting 1 push and hold the BS1 MODE button for more than 5 seconds Setting mode 2 is entered and H1P lights d Push the BS2 SET button several times and match the LED display with the Setti...

Page 157: ...z z z 9 Mode 2 Factory setting z z z z 9 z Mode 3 z z z 9 z z 26 Night time low noise start setting z z z PM 8 00 z z z z z 9 PM 10 00 Factory setting z z z z 9 z PM 0 00 z z z 9 z z 27 Night time lo...

Page 158: ...nfirm LIQ and SUCTION Stop valve closed Is all refrigerant charged Is all refrigerant charged YES YES NO NO Turn off the power Charge through Service port of LIQ Stop valve Open LIQ SUCTION Stop valve...

Page 159: ...arging operation set item No 20 again and then start the operation When the charging immediately stops even by restarting the refrigerant is charged excessively The refrigerant cannot be charged any m...

Page 160: ...g and learning for the minimum opening degree of motorized valve 3 2 8 Power Transistor Check Operation When the inverter system malfunctions malfunction of inverter INV compressor to locate where the...

Page 161: ...Field Setting Si39 504 150 Test Operation...

Page 162: ...r R2T for Heat Exchanger 181 3 10 C5 Indoor Unit Malfunction of Thermistor R3T for Gas Pipes 182 3 11 C9 Indoor Unit Malfunction of Thermistor R1T for Suction Air 183 3 12 CJ Indoor Unit Malfunction o...

Page 163: ...roller and Indoor Unit 221 3 45 U7 Indoor Unit Malfunction of Transmission Between Outdoor Units 222 3 46 U8 Indoor Unit Malfunction of Transmission Between Main and Sub Remote Controllers 224 3 47 U9...

Page 164: ...153 6 Troubleshooting OP Unified ON OFF Controller 245 6 1 Operation Lamp Blinks 245 6 2 Display Under Centralized Control Blinks Repeats Single Blink 247 6 3 Display Under Centralized Control Blinks...

Page 165: ...that the system is controlled so as not to put unreasonable loads on the system Normal operation The system will automatically start operation after a lapse of five minutes Pressing the TEMP ADJUST b...

Page 166: ...r and outdoor units After the completion of defrosting operation the system is switched to heating operation Defrosted moisture turns to be vapor and comes out from the units Normal operation 11 The s...

Page 167: ...re the remote controller is normal Normal operation This code is displayed for a period of approximately one minute at maximum 16 The outdoor unit compressor or the outdoor unit fan does not stop Afte...

Page 168: ...on 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 on...

Page 169: ...malfunction the remote controller s operation LED blinks and malfunction code is displayed Even if stop operation is carried out malfunction contents are displayed when the inspection mode is entered...

Page 170: ...uct all of the following operations 1 short beep Conduct steps 3 and 4 Continue the operation in step 4 until a buzzer remains ON The continuous buzzer indicates that the malfunction code is confirmed...

Page 171: ...Troubleshooting by Remote Controller Si39 504 160 Troubleshooting The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed...

Page 172: ...Si39 504 Troubleshooting by Remote Controller Troubleshooting 161...

Page 173: ...RSXYP L RXYQ M RXYQ MA Unit Malfunction code Inspection Normal display No display 0 L 0 Malfunction code blinks when a malfunction occurs Unit Malfunction code Inspection Inspection mode Push the butt...

Page 174: ...group control only Select the indoor unit No to be set with the time mode For wireless remote controller button 3 Make the settings required for each mode Modes 41 44 45 In case of Mode 44 45 push bu...

Page 175: ...want to search for the unit No By selecting the unit No with the button you can turn the fan of each indoor unit on forced ON individually 44 Individual setting Set the fan speed and air flow directi...

Page 176: ...f a malfunction occurs during operation the operation lamp malfunction code and display of malfunctioning unit No let you know the contents and location of the malfunction When there is a stop due to...

Page 177: ...r lock or over current 189 E7 9 9 9 Malfunction of outdoor unit fan motor 190 E9 9 9 9 Malfunction of moving part of electronic expansion valve Y1E Y2E 192 F3 9 9 9 Abnormal discharge pipe temperature...

Page 178: ...Improper combination of indoor and outdoor units indoor units and remote controller 227 UC 8 8 8 Address duplication of central remote controller 228 UE 9 9 9 Malfunction of transmission between cent...

Page 179: ...al connection with excessive number of indoor units Conflict of refrigerant type in indoor units Incorrect wiring Auto address error Malfunction of multi level converter abnormality in conflict check...

Page 180: ...7 9 7 9 7 9 7 9 9 7 9 9 9 7 7 7 7 9 7 7 9 9 7 7 7 7 7 7 7 7 9 7 9 9 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 9 7 9 9 7 9 9 7 7 7 7 7 7 9 7 9 7 9 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7...

Page 181: ...ls 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 Be...

Page 182: ...be correctly received from the E PROM E PROM Type of nonvolatile memory Maintains memory contents even when the power supply is turned off Supposed Causes Defect of indoor unit PC board Troubleshootin...

Page 183: ...HQ Option FXMQ200 250M Option FXAQ Option Method of Malfunction Detection By float switch OFF detection Malfunction Decision Conditions When rise of water level is not a condition and the float switch...

Page 184: ...door unit PC board Loose connection of connector NO NO NO YES YES NO NO YES NO YES NO NO The float switch is connected to X8A of the indoor unit PC board NO The drain pump works when the power supply...

Page 185: ...output voltage to the fan is maximum Supposed Causes Fan motor lock Disconnected or faulty wiring between fan motor and PC board Troubleshooting Caution Be sure to turn off power switch before connect...

Page 186: ...tion Utilizes ON OFF of the limit switch when the motor turns Malfunction Decision Conditions When ON OFF of the microswitch for positioning cannot be reversed even though the swing flap motor is ener...

Page 187: ...ce indoor unit PC board NO NO YES NO YES NO YES YES NO Indoor unit is a model equipped with a swing flap function The swing motor works when the power supply is turned off and then back on When the ai...

Page 188: ...part of electronic expansion valve Defect of indoor unit PC board Defect of connecting cable Troubleshooting V2781 Caution Be sure to turn off power switch before connect or disconnect connector or p...

Page 189: ...ctronic expansion valve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins Normal Continuity No continuity Pin No 1 White 2 Yellow 3 Orange...

Page 190: ...n the float switch changes from ON to OFF while the compressor is in non operation Supposed Causes Humidifier unit optional accessory leaking Defect of drain pipe upward slope etc Defect of indoor uni...

Page 191: ...n the capacity code is not contained in the PC board s memory and the capacity setting adaptor is not connected 2 When a capacity that doesn t exist for that unit is set Supposed Causes You have forgo...

Page 192: ...nected or shorted while the unit is running Supposed Causes Defect of thermistor R2T for liquid pipe Defect of indoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Character...

Page 193: ...rted while the unit is running Supposed Causes Defect of indoor unit thermistor R3T for gas pipe Defect of indoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristi...

Page 194: ...connected or shorted while the unit is running Supposed Causes Defect of indoor unit thermistor R1T for air inlet Defect of indoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperat...

Page 195: ...comes disconnected or shorted while the unit is running Supposed Causes Defect of remote controller thermistor Defect of remote controller PC board Troubleshooting Note In case of remote controller th...

Page 196: ...correctly received from the E PROM E PROM Type of nonvolatile memory Maintains memory contents even when the power supply is turned off Supposed Causes Defect of outdoor unit PC board A1P Troubleshoot...

Page 197: ...ous power failure Faulty high pressure sensor Troubleshooting 1 Actuation of high pressure switch HPS The outdoor unit PC board s connector is disconnected Is the outdoor unit heat exchanger dirty Def...

Page 198: ...or unit PC board A1P Stop valve is not opened Troubleshooting 1 Voltage measurement point 2 Refer to Pressure Sensor Pressure Voltage Characteristics table on P301 V2791 Caution Be sure to turn off po...

Page 199: ...detected Supposed Causes Compressor lock High differential pressure 0 5MPa or more Incorrect UVWN wiring Faulty inverter PC board Stop valve is left in closed Troubleshooting Check the installation co...

Page 200: ...Troubleshooting Note Abnormal case The current sensor value is 0 during STD compressor operation The current sensor value is more than 15 0A YL or 36 0A TL during STD compressor operation Is the stop...

Page 201: ...he system shuts down Supposed Causes Malfunction of fan motor The harness connector between fan motor and PC board is left in disconnected or faulty connector Fan does not run due to foreign matters t...

Page 202: ...supply cable YES Is the LED HAP on fan inverter PC board blinking NO Check No 3 Check on connector of fan motor Signal wire YES Are the resistance values between phases of U V W balanced Is there any...

Page 203: ...of connecting cable Troubleshooting V3067 YES Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Return to normal Turn power supply off an...

Page 204: ...ctronic expansion valve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins Normal Continuity No continuity Pin No 1 White 2 Yellow 3 Orange...

Page 205: ...ge pipe temperature rises suddenly Supposed Causes Faulty discharge pipe temperature sensor Faulty connection of discharge pipe temperature sensor Faulty outdoor unit PC board Troubleshooting Refer to...

Page 206: ...temperature is lower than evaporating temperature during check operation Supposed Causes Refrigerant overcharge Disconnection of the suction pipe thermistor Disconnection of the subcooling heat excha...

Page 207: ...fan motor connection cable Fan Inverter PC board malfunction Troubleshooting 1 Disconnect connector X2A and measure the following resistance V3069 Turn power off Check of fan motor connector H1 Cautio...

Page 208: ...fect of thermistor R1T for outdoor air Defect of outdoor unit PC board A1P Troubleshooting The alarm indicator is displayed when the fan only is being used also Refer to Thermistor Resistance Temperat...

Page 209: ...ensor becomes 5A or lower or 40A or more during standard compressor operation Supposed Causes Faulty current sensor Faulty outdoor unit PC board Troubleshooting V3071 Caution Be sure to turn off power...

Page 210: ...or outdoor unit discharge pipe Defect of outdoor unit PC board A1P Troubleshooting The alarm indicator is displayed when the fan is being used also Note 5 HP class R3T 8 12 HP class R31T R32T 14 16Hp...

Page 211: ...perature thermistor is detected Supposed Causes Defect of thermistor R2T for outdoor unit suction pipe Defect of outdoor unit PC board A1P Troubleshooting Refer to Thermistor Resistance Temperature Ch...

Page 212: ...heat exchange thermistor is detected Supposed Causes Defect of thermistor R4T for outdoor unit coil Defect of outdoor unit PC board A1P Troubleshooting Refer to Thermistor Resistance Temperature Chara...

Page 213: ...rcuited or open Supposed Causes Faulty receiver outlet liquid pipe thermistor R6T Faulty outdoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P299...

Page 214: ...circuited or open Supposed Causes Faulty subcooling heat exchanger gas pipe thermistor R5T Faulty outdoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics tabl...

Page 215: ...ion of low pressure sensor with wrong connection Defect of outdoor unit PC board Troubleshooting 1 Voltage measurement point 2 Refer to Pressure Sensor Pressure Voltage Characteristics table on P301 V...

Page 216: ...h pressure sensor with wrong connection Defect of outdoor unit PC board Troubleshooting 1 Voltage measurement point 2 Refer to Pressure Sensor Pressure Voltage Characteristics table on P301 V2808 Caut...

Page 217: ...s Actuation of fin thermal Actuates above 98 C Defect of inverter PC board Defect of fin thermistor Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P299 V2811 Resis...

Page 218: ...ction Higher voltage than actual is displayed when the inverter output voltage is checked by tester Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may...

Page 219: ...connector or parts damage may be occurred Inverter output voltage check Inverter output voltage is not balanced Normal if within 380 10V YL or 220 5V TL Must be measured when frequency is stable Compr...

Page 220: ...Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Inverter output voltage check Inverter output voltage is not balanced Normal if within 380 10V Y...

Page 221: ...unction Detection Check the communication state between inverter PC board and control PC board by micro computer Malfunction Decision Conditions When the correct communication is not conducted in cert...

Page 222: ...e microcomputer monitor green on the inverter P C B is blinking The voltage between two pins of X1A on the inverter unit is 220 240 V YES Defect of outdoor main PC board or defect of inverter PC board...

Page 223: ...defect After turning the power supply OFF check and repair the main circuit wiring or parts 1 Loose or disconnected wiring between power supply and inverter 2 K1M contact disposition fusion or contact...

Page 224: ...tus Malfunction is not decided while the unit operation is continued P4 will be displayed by pressing the inspection button Supposed Causes Defect of radiator fin temperature sensor Defect of inverter...

Page 225: ...ature Characteristics table on P299 2 Refer to Pressure Sensor Pressure Voltage Characteristics table on P301 V2819 The suction pipe temperature minus coil temperature is 20 C or higher Resistance is...

Page 226: ...is made between phases Supposed Causes Power supply reverse phase Power supply open phase Defect of outdoor PC board A1P Troubleshooting V2820 Operation is normal if one place of power supply line pha...

Page 227: ...tion Detection Detection of voltage of main circuit capacitor built in the inverter and power supply voltage Malfunction Decision Conditions When the capacitor above only has a voltage of 380 V or les...

Page 228: ...inals P2 or P3 and N3 gradually rise to 556 VDC YL or 283 VDC TL after turning on Monitor field power supply Replace the inverter PC board The voltage between the P2 or P3 and N3 terminals is 380 VDC...

Page 229: ...onditions Malfunction is decided when the unit starts operation without check operation Supposed Causes Check operation is not executed Troubleshooting V3052 Has the check operation performed on Outdo...

Page 230: ...n Detection Microcomputer checks if transmission between indoor and outdoor units is normal Malfunction Decision Conditions When transmission is not carried out normally for a certain amount of time S...

Page 231: ...oor or outdoor outdoor unit transmission wiring YES NO NO YES Has the indoor or outdoor unit PC board been replaced or has the indoor outdoor or outdoor outdoor unit transmission wiring been modified...

Page 232: ...ndoor unit PC board Defect of remote controller PC board Malfunction of transmission caused by noise Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or...

Page 233: ...units Malfunction Decision Conditions When transmission is not carried out normally for a certain amount of time Supposed Causes Improper connection of transmission wiring between outdoor unit and ex...

Page 234: ...LECT to IND YES Fix the outdoor units multi connection transmission wiring and reset power NO Is the outdoor units multi connection transmission wiring normal Is the indoor outdoor unit transmission w...

Page 235: ...continue for specified period Supposed Causes Malfunction of transmission between main and sub remote controller Connection between sub remote controllers Defect of remote controller PC board Trouble...

Page 236: ...ion Detect the malfunction signal of any other indoor unit within the system concerned Malfunction Decision Conditions When the malfunction decision is made on any other indoor unit within the system...

Page 237: ...tes or more NO Refer to failure diagnosis for U4 malfunction code NO YES U9 has been displayed for 2 minutes or more NO Turn on all indoor units Refer to failure diagnosis for A1 malfunction code NO Y...

Page 238: ...oor PC board was not conducted after replacing to spare parts PC board Troubleshooting The number of indoor units that can be connected to a single outdoor unit system depends on the type of outdoor u...

Page 239: ...on Conditions The malfunction decision is made as soon as the abnormality aforementioned is detected Supposed Causes Address duplication of centralized controller Defect of indoor unit PC board Troubl...

Page 240: ...Malfunction Detection Microcomputer checks if transmission between indoor unit and centralized controller is normal Malfunction Decision Conditions When transmission is not carried out normally for a...

Page 241: ...incorrectly Is the master controller s connector for setting master controller disconnected Set the group No correctly Replace indoor unit PC board Fix the wiring correctly Fix the wiring correctly Co...

Page 242: ...efect of indoor unit PC board Stop valve is left in closed Troubleshooting Note Wiring check operation may not be successful if carried out after the outdoor unit has been off for more than 12 hours o...

Page 243: ...rn off power switch before connect or disconnect connector or parts damage may be occurred V2831 NO YES YES After fixing incorrect wiring push and hold the RESET button on the master outdoor unit PC b...

Page 244: ...troller Display M1 Applicable Models Central remote controller Method of Malfunction Detection Detect an abnormality in the DIII NET polarity circuit Malfunction Decision Conditions When polarity and...

Page 245: ...oubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V2833 Is transmission wiring disconnected or wired incorrectly The PC boar...

Page 246: ...the malfunction according to DIII NET transmission data Malfunction Decision Conditions When the schedule timer is set to individual use mode other central component is present When multiple master c...

Page 247: ...at the connector for setting master controller is connected to one controller for centralized control and reset the power supply for all optional controllers for centralized control simultaneously Dis...

Page 248: ...ler mode or slave controller mode Supposed Causes Address duplication of centralized controller Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts...

Page 249: ...alfunction Detection Microcomputer checks if transmission between indoor unit and centralized controller is normal Malfunction Decision Conditions When transmission is not carried out normally for a c...

Page 250: ...incorrectly Is the master controller s connector for setting master controller disconnected Set the group No correctly Replace indoor unit PC board Fix the wiring correctly Fix the wiring correctly C...

Page 251: ...circuit Malfunction Decision Conditions When polarity and polarity are detected at the same time Supposed Causes Defect of schedule timer PC board Troubleshooting Caution Be sure to turn off power sw...

Page 252: ...oting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V2838 Is transmission wiring disconnected or wired incorrectly The PC board of one...

Page 253: ...tion Detect the malfunction according to DIII NET transmission data Malfunction Decision Conditions When the schedule timer is set to individual use mode other central component is present When multip...

Page 254: ...r setting master controller when the malfunction is cleared is defective and must be replaced Reset the power supply for all optional controllers for centralized control simultaneously YES NO Is the s...

Page 255: ...ion data Malfunction Decision Conditions When two or more schedule timers are connected Supposed Causes Address duplication of schedule timer Troubleshooting Caution Be sure to turn off power switch b...

Page 256: ...l of indoor units Unified ON OFF controller Method of Malfunction Detection Detect the malfunction according to DIII NET transmission data Malfunction Decision Conditions Supposed Causes Malfunction o...

Page 257: ...er controller disconnected Set the group No correctly Replace indoor unit PC board Fix the wiring correctly Fix the wiring correctly Connect the connector correctly Replace the central PC board Reset...

Page 258: ...zed 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 ot...

Page 259: ...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 su...

Page 260: ...oller 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 cont...

Page 261: ...ss 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 disconnec...

Page 262: ...n the fan motor is rotated one turn manually under the condition of operation OFF after power supply is turned ON Are the pulse approx 0 V and 5 V generated 4 times between No 1 and 5 on X2A Are the p...

Page 263: ...lay connector is disconnected Check No 3 Check on connector of fan motor Signal wire 1 Turn off the power supply 2 Measure the resistance between Vcc and each phase of U V W and GND and each phase at...

Page 264: ...cal and Functional Parts 283 3 1 Outdoor Unit 283 3 2 Indoor Side 287 4 Option List 292 4 1 Option List of Controllers 292 4 2 Option Lists Outdoor Unit 294 5 Piping Installation Point 295 5 1 Piping...

Page 265: ...Piping Diagrams Si39 504 254 Appendix 1 Piping Diagrams 1 1 Outdoor Unit RXYQ5MAYL E TL E 3D048203...

Page 266: ...Si39 504 Piping Diagrams Appendix 255 RXYQ8MA 10MA 12MAYL E TL E 3D048033A...

Page 267: ...Piping Diagrams Si39 504 256 Appendix RXYQ14MA 16MAYL E TL E 3D048034A...

Page 268: ...ectronic expansion valve Y1E Used for gas superheated degree control while in cooling operation or subcooled degree control while in heating operation 2 Suction air temperature thermistor R1T Used for...

Page 269: ...Piping Diagrams Si39 504 258 Appendix FXDQ Refrigerant pipe connection port diameters 4D043864E mm Model Gas Liquid FXDQ20N 25N 32N 40N 50NVE T 12 7 6 4 FXDQ63NVE T 15 9 9 5...

Page 270: ...Si39 504 Wiring Diagrams for Reference Appendix 259 2 Wiring Diagrams for Reference 2 1 Outdoor Unit 2 1 1 RXYQ MAYL E RXYQ5MAYL E 3D047087C...

Page 271: ...Wiring Diagrams for Reference Si39 504 260 Appendix RXYQ8MA 10MA 12MAYL E 3D047088C...

Page 272: ...Si39 504 Wiring Diagrams for Reference Appendix 261 RXYQ14MA 16MAYL E 3D047089C...

Page 273: ...Wiring Diagrams for Reference Si39 504 262 Appendix 2 1 2 RXYQ MATL E RXYQ5MATL E 3D049059A...

Page 274: ...Si39 504 Wiring Diagrams for Reference Appendix 263 RXYQ8MA 10MA 12MATL E 3D049060A...

Page 275: ...Wiring Diagrams for Reference Si39 504 264 Appendix RXYQ14MA 16MATL E 3D049061A...

Page 276: ...Si39 504 Wiring Diagrams for Reference Appendix 265 2 2 Field Wiring 2 2 1 RXYQ MAYL E RXYQ5MA 8MA 10MA 12MA 14MA 16MAYL E 3D040746J...

Page 277: ...Wiring Diagrams for Reference Si39 504 266 Appendix RXYQ18MA 20MA 22MA 24MA 26MA 28MA 30MA 32MAYL E 3D040747H...

Page 278: ...Si39 504 Wiring Diagrams for Reference Appendix 267 RXYQ34MA 36MA 38MA 40MA 42MA 44MA 46MA 48MAYL E C 3D040748H...

Page 279: ...Wiring Diagrams for Reference Si39 504 268 Appendix 2 2 2 RXYQ MATL E RXYQ5MA 8MA 10MA 12MA 14MA 16MATL E 3D041990A...

Page 280: ...Si39 504 Wiring Diagrams for Reference Appendix 269 RXYQ18MA 20MA 22MA 24MA 26MA 28MA 30MA 32MATL E 3D041991A...

Page 281: ...Wiring Diagrams for Reference Si39 504 270 Appendix RXYQ34MA 36MA 38MA 40MA 42MA 44MA 46MA 48MATL E 3D041992A...

Page 282: ...Si39 504 Wiring Diagrams for Reference Appendix 271 2 3 Indoor Unit FXCQ20M 25M 32M 63MVE 3D039556A...

Page 283: ...Wiring Diagrams for Reference Si39 504 272 Appendix FXCQ40M 50M 80M 125MVE 3D039557A...

Page 284: ...Si39 504 Wiring Diagrams for Reference Appendix 273 FXFQ25M 32M 40M 50M 63M 80M 100M 125MVE 3D039600A...

Page 285: ...Wiring Diagrams for Reference Si39 504 274 Appendix FXKQ25M 32M 40M 63MVE 3D039564B...

Page 286: ...Si39 504 Wiring Diagrams for Reference Appendix 275 FXDQ20N 25N 32N 40N 50N 63NVE with Drain Pump 3D045500C...

Page 287: ...Wiring Diagrams for Reference Si39 504 276 Appendix FXDQ20N 25N 32N 40N 50N 63NVET without Drain Pump 3D049604A...

Page 288: ...Si39 504 Wiring Diagrams for Reference Appendix 277 FXSQ20M 25M 32M 40M 50M 63M 80M 100M 125MVE 3D039561A...

Page 289: ...Wiring Diagrams for Reference Si39 504 278 Appendix FXMQ40M 50M 63M 80M 100M 125MVE 3D039620B...

Page 290: ...Si39 504 Wiring Diagrams for Reference Appendix 279 FXMQ200M 250MVE 3D039621B...

Page 291: ...Wiring Diagrams for Reference Si39 504 280 Appendix FXHQ32M 63M 100MVE 3D039801D...

Page 292: ...Si39 504 Wiring Diagrams for Reference Appendix 281 FXAQ20M 25M 32MVE 40M 50M 63MVE 3D034206C...

Page 293: ...Wiring Diagrams for Reference Si39 504 282 Appendix FXLQ20M 25M 32M 40M 50M 63MVE FXNQ20M 25M 32M 40M 50M 63MVE 3D039826C...

Page 294: ...ain Y1E Fully closed 0pls Fully open 2000pls Electronic expansion valve Subcool Y2E Fully closed 0pls Fully open 2000pls Pressure protection Highpressure switch For M1C S1PH OFF 4 0 MPa ON 3 0 0 15MPa...

Page 295: ...ronic expansion valve Subcool Y2E Fully closed 0pls Fully open 2000pls Pressure protection Highpressure switch For M1C S1PH OFF 4 0 MPa ON 3 0 0 15MPa For M2C S2PH OFF 4 0 MPa ON 3 0 0 15MPa For M3C S...

Page 296: ...open 2000pls Electronic expansion valve Subcool Y2E Fully closed 0pls Fully open 2000pls Pressure protection Highpressure switch For M1C S1PH OFF 4 0 MPa ON 3 0 0 15MPa For M2C S2PH OFF 4 0 MPa ON 3 0...

Page 297: ...expansion valve Subcool Y2E Fully closed 0pls Fully open 2000pls Pressure protection Highpressure switch For M1C S1PH OFF 4 0 MPa ON 3 0 0 15MPa For M2C S2PH OFF 4 0 MPa ON 3 0 0 15MPa For M3C S3PH OF...

Page 298: ...Exchanger R2T ST8602A 5 6 L1000 20k 25 C Others Float Switch S1L FS 0211B Fuse F1U 250V 5A 5 2 Thermal Fuse TFu Transformer T1R Parts Name Symbol Model Remark FXCQ 20MVE FXCQ 25MVE FXCQ 32MVE FXCQ 40...

Page 299: ...igh Temp R3T ST8605 7 8 L1600 20k 25 C Thermistor Heat Exchanger R2T ST8602A 7 6 L1600 20k 25 C Others Float Switch S1L FS 0211B Fuse F1U 250V 5A 5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model...

Page 300: ...1250 20k 25 C Others Float Switch S1L FS 0211B Fuse F1U 250V 5A 5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXMQ 40MVE FXMQ 50MVE FXMQ 63MVE FXMQ 80MVE FXMQ 100MVE FXMQ 125MVE FXMQ 20...

Page 301: ...50 20k 25 C Thermistor Heat Exchanger R2T ST8602A 6 6 L 1250 20k 25 C ST8602A 6 6 L 1250 20k 25 C Others Fuse F1U 250V 5A 5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXAQ 20MVE FXAQ 2...

Page 302: ...8 L2500 20k 25 C Thermistor for Heat Exchanger R2T ST8602A 9 6 L2500 20k 25 C Others Fuse F1U AC250V 5A Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXNQ 20MVE FXNQ 25MVE FXNQ 32MVE FXNQ...

Page 303: ...A 61 12 External control adaptor for outdoor unit Must be installed on indoor units DTA104A61 DTA104A62 DTA104A61 DTA104A53 DTA104A61 DTA104A62 DTA104A61 DTA104A61 13 Interface adaptor for SkyAir ser...

Page 304: ...allow communications between VRV and BMS Operation and monitoring of air conditioning systems through BACnet communications 3 1 Optional DIII board DAM411A1 Expansion kit installed on DMS502A51 to pr...

Page 305: ...L E Cool Heat Selector KRC19 26A Cool Heat Selector Fixing box KJB111A Distributive Piping Refnet header KHRP26M22H KHRP26M33H KHRP26M72H KHRP26M73H Max 4 branch Max 8 branch Max 8 branch Max 8 branch...

Page 306: ...een the multi connection kits or between multi connection kit and outdoor unit is 2m or more prepare a vertical projection part 200mm or more as shown below only on the gas pipe line location less tha...

Page 307: ...g Kit Indoor Unit Actual piping length 150m or less equivalent length 175m or less the total extension 510m or less REFNET Joint Indoor Unit Actual piping length 40 90 m or less Note Allowable Level D...

Page 308: ...Si39 504 Selection of Pipe Size Joints and Header Appendix 297 6 Selection of Pipe Size Joints and Header Example of connection R 410A Type RXYQ5 48MA Heat Pump...

Page 309: ...Selection of Pipe Size Joints and Header Si39 504 298 Appendix Note 1...

Page 310: ...56 49 55 08 53 6 41 6 53 4 53 71 52 38 54 6 65 6 53 5 51 09 49 83 55 6 41 6 53 6 48 61 47 42 56 6 18 6 06 7 46 26 45 14 57 5 95 5 84 8 44 05 42 98 58 5 74 5 43 9 41 95 40 94 59 5 14 5 05 10 39 96 39 0...

Page 311: ...233 14 71 33 92 33 35 121 7 26 7 16 22 228 05 223 08 72 32 78 32 23 122 7 06 6 97 23 218 24 213 51 73 31 69 31 15 123 6 87 6 78 24 208 90 204 39 74 30 63 30 12 124 6 69 6 59 25 200 00 195 71 75 29 61...

Page 312: ...Low Pressure PL PH Detected Pressure High Side MPa PL Detected Pressure Low Side MPa VH Output Voltage High Side VDC VL Output Voltage Low Side VDC PH 1 38V 0 69 PL 0 57V 0 28 PH High pressure MPa VL...

Page 313: ...ng The Inverter s Power Transistors and Diode Modules Decision according to continuity check by analog tester Before checking disconnect the electric wiring connected to the power transistor and diode...

Page 314: ...other than given above the power unit is defective and must be replaced Note Above figures are measured by analogue tester Make sure to set Tester Range to x 1k Diode Module Decision If other than giv...

Page 315: ...Method of Replacing The Inverter s Power Transistors and Diode Modules Si39 504 304 Appendix...

Page 316: ...utions for New Precautions for New Precautions for New Precautions for New Refrigerant R 410A Refrigerant R 410A Refrigerant R 410A Refrigerant R 410A 1 Precautions for New Refrigerant R 410A 306 1 1...

Page 317: ...pic mixture refrigerant mixture of two or more refrigerants having similar boiling points 3 The design pressure is different at each product Please refer to the installation manual for each product Re...

Page 318: ...ew Refrigerant R 410A 307 Thermodynamic characteristic of R 410A Temperature Steam pressure kPa Liquid Vapor Density kg m3 Liquid Vapor Specific heat at constant pressure kJ kgK Liquid Vapor Specific...

Page 319: ...ned in high pressure vessels Although those vessels are durable and strong careless handling can cause damage that can lead to unexpected accidents Do not drop vessels let them fall apply impact or ro...

Page 320: ...on differs for R 410A and R 407C Charging cylinder 2Weighting instrument used for HFCs Gas detector 2The same tool can be used for HFCs Vacuum pump pump with reverse flow preventive function 2To use e...

Page 321: ...pipe extension margin of 0 to 0 5mm was provided for flaring For R 410A air conditioners perform pipe flaring with a pipe extension margin of 1 0 to 1 5mm For clutch type only Conventional tool with p...

Page 322: ...z Maximum degree of vacuum 50 l min 50Hz Select a vacuum pump which is able to keep 60 l min 60Hz the vacuum degree of the system in excess of 2 Suction port UNF7 16 20 1 4 Flare 100 7 kPa 5 torr 755...

Page 323: ...rogen 5 Refrigerant oil Air compal Specifications 2 Contains synthetic oil therefore it can be used for piping work of every refrigerant cycle 2 Offers high rust resistance and stability over long per...

Page 324: ...with and without hand operate valve that prevents refrigerant from outflow Differences 2 Pressure proof hose 2 Change in service port diameter 2 Use of nylon coated material for HFC resistance 8 Char...

Page 325: ...liquid refrigerant charging 2 A manifold with separate ports for HFCs and previous refrigerants is equipped as standard accessories Differences 2 Measurement is based on weight to prevent change of mi...

Page 326: ...Repeats Double Blink 250 Display Under Centralized Control Blinks Repeats Single Blink 247 Drain Level above Limit 179 Drain Pump Control 95 E E1 185 E3 186 E4 187 E5 188 E6 189 E7 190 E9 192 Electro...

Page 327: ...8 Malfunction of Transmission Between Indoor and Outdoor Units in the Same System 225 Malfunction of Transmission Between Indoor Units 219 Malfunction of Transmission Between Inverter and Control PC B...

Page 328: ...sed Troubleshooting 154 System is not Set yet 231 T Test Operation 106 Procedure and Outline 106 The Example of A Wrong Pattern 296 Thermistor Resistance Temperature Characteristics 299 Thermostat Sen...

Page 329: ...of Indoor and Outdoor Units Indoor Units and Remote Controller 227 Improper Combination of Optional Controllers for Centralized Control 235 242 Inverter Compressor Abnormal 207 Inverter Current Abnor...

Page 330: ...53 Refrigerant Overcharged 195 Remote Controller Self Diagnosis Function 165 Remote Controller Service Mode 163 Reverse Phase Open Phase 215 RXYQ14MA 16MA 52 RXYQ5MA 50 RXYQ8MA 10MA 12MA 51 S Self di...

Page 331: ...RXYQ5 48MAYL E TL E R 410A Heat Pump 60Hz Si39 504 Printed in Singapore 01 2006 COS Service Manual R 410A Heat Pump RXYQ5 48MAYL E TL E Si39 504...

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