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Daikin VRV EMERION RXYQ-AATJA, Service Manual


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SiUS342303E

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Table of Contents

3.40 Electronic Expansion Valve Coil Abnormality or Sub PCB Momentary 

Overcurrent .............................................................................................. 311

3.41 Discharge Pipe Temperature Abnormality ............................................... 312
3.42 Wet Alarm................................................................................................. 314
3.43 Refrigerant Overcharged.......................................................................... 316
3.44 Thermistor Abnormality ............................................................................ 317
3.45 Harness Abnormality (between Outdoor Unit Main PCB and Inverter 

PCB)......................................................................................................... 318

3.46 Outdoor Fan PCB Abnormality................................................................. 319
3.47 High Pressure Sensor Abnormality .......................................................... 320
3.48 Low Pressure Sensor Abnormality ........................................................... 321
3.49 Inverter PCB Abnormality......................................................................... 322
3.50 Inverter Radiation Fin Temperature Rise Abnormality ............................. 324
3.51 Compressor Instantaneous Overcurrent .................................................. 327
3.52 Compressor Overcurrent.......................................................................... 329
3.53 Compressor Startup Abnormality ............................................................. 331
3.54 Transmission Error between Inverter PCB and Outdoor Unit Main PCB... 333
3.55 Power Supply Voltage Imbalance ............................................................ 335
3.56 Inverter Radiation Fin Temperature Abnormality ..................................... 337
3.57 Field Setting Abnormality after Replacing Outdoor Unit Main PCB or 

Combination of PCB Abnormality............................................................. 339

3.58 Refrigerant Shortage ................................................................................ 340
3.59 Reverse Phase, Open Phase, Power Supply Frequency Issue ............... 341
3.60 Power Supply Insufficient or Instantaneous Abnormality ......................... 342
3.61 Check Operation Not Executed................................................................ 344
3.62 Transmission Error between Indoor Units and Outdoor Units, Open 

Phase in Power Supply Wiring ................................................................. 345

3.63 Transmission Error between Remote Controller and Indoor Unit............. 348
3.64 Transmission Error between Outdoor Units ............................................. 349
3.65 Transmission Error between Main and Sub Remote Controllers ............. 355
3.66 Transmission Error between Indoor Units and Outdoor Units in the 

Same System ........................................................................................... 356

3.67 Improper Combination of Indoor Unit and Outdoor Unit........................... 357
3.68 Incorrect Gas Furnace Connecting Number............................................. 360
3.69 Incorrect Electric Heater Capacity Setting................................................ 361
3.70 Address Duplication of Centralized Controller.......................................... 362
3.71 Transmission Error between Centralized Controller and Indoor Unit ....... 363
3.72 System Not Set Yet .................................................................................. 366
3.73 System Abnormality, Refrigerant System Address Undefined ................. 367
3.74 Climate Talk Communication System Combination Error (Before Initial 

Setting for Communication Completes).................................................... 369

3.75 Climate Talk Communication System Combination Error (After Initial 

Setting for Communication Completes).................................................... 370

4. Check ......................................................................................................371

4.1 High Pressure Check ............................................................................... 371
4.2 Low Pressure Check ................................................................................ 372
4.3 Superheat Operation Check..................................................................... 374
4.4 Power Transistor Check ........................................................................... 376
4.5 Refrigerant Overcharge Check................................................................. 378

Summary of Contents for VRV EMERION RXYQ-AATJA

Page 1: ...Service Manual Heat Pump 60 Hz RXYQ AATJA 208 230 V RXYQ AAYDA 460 V SiUS342303E...

Page 2: ...16 4 Capacity Range 17 4 1 Connection Ratio 17 4 2 Outdoor Unit Combinations 18 5 Specifications 19 5 1 RXYQ AATJA 19 5 2 RXYQ AAYDA 28 Part 2 Refrigerant Circuit 37 1 Refrigerant Circuit Piping Diag...

Page 3: ...2 3 Sub Unit Stops during Master Unit Control 100 3 Standby Control 101 3 1 Restart Standby 101 3 2 Crankcase Heater Control 101 4 Startup Control 102 4 1 Startup Control in Cooling 102 4 2 Startup C...

Page 4: ...with Remote Controller 149 1 2 List of Field Settings for Indoor Unit 155 1 3 Applicable Field Settings 157 1 4 Details of Field Settings for Indoor Unit 161 1 5 Field Settings of Low Temperature Hydr...

Page 5: ...on Valve Coil Abnormality Dust Clogging 268 3 17 Gas Furnace Abnormality 269 3 18 Drain Level above Limit 270 3 19 Self Cleaning Decoration Panel Abnormality 271 3 20 Capacity Determination Device Abn...

Page 6: ...upply Insufficient or Instantaneous Abnormality 342 3 61 Check Operation Not Executed 344 3 62 Transmission Error between Indoor Units and Outdoor Units Open Phase in Power Supply Wiring 345 3 63 Tran...

Page 7: ...re Check of the Relay Wires 385 4 11 Fan Motor Connector Check Power Supply Cable 386 4 12 Fan Motor Connector Check Signal Cable 388 4 13 Electronic Expansion Valve Coil Check 390 4 14 Fan Motor Conn...

Page 8: ...S342303E 1 Introduction 1 Safety Cautions 2 1 1 Warnings and Cautions Regarding Safety of Workers 2 1 2 Warnings and Cautions Regarding Safety of Users 4 2 Icons Used 7 3 Revision History 8 Introducti...

Page 9: ...ruction is shown in the illustration or near the symbol 1 1 Warnings and Cautions Regarding Safety of Workers This manual is for the person in charge of maintenance and inspection Warning Do not store...

Page 10: ...The use of materials for other refrigerant models may cause a serious accident such as damage to the refrigerant cycle or equipment failure Do not mix air or gas other than the specified refrigerant...

Page 11: ...he same power outlet with other electrical appliances since it may cause an electrical shock excessive heat generation or fire Be sure to use an exclusive power circuit for the equipment and follow th...

Page 12: ...ake sure that the power cable plug is not dirty or loose then insert the plug into a power outlet securely If the plug is dusty or has a loose connection it may cause an electrical shock or fire When...

Page 13: ...nce is 1 M or greater Faulty insulation may cause an electrical shock Be sure to check the drainage of the indoor unit after the repair Faulty drainage may cause water to enter the room and wet the fu...

Page 14: ...tion is used when there is danger that the reader through incorrect manipulation may damage equipment lose data get an unexpected result or have to restart part of a procedure Note Note Note provides...

Page 15: ...SiUS342303E Revision History Introduction 8 3 Revision History Month Year Version Revised contents 04 2023 SiUS342303E First edition...

Page 16: ...atment Equipment 11 2 External Appearance 12 2 1 Outdoor Unit 12 2 2 Indoor Unit 14 2 3 Air Treatment Equipment 15 3 Combination of Outdoor Units 16 4 Capacity Range 17 4 1 Connection Ratio 17 4 2 Out...

Page 17: ...ity range ton 24 26 28 30 32 34 36 38 40 Power supply Revision Capacity index 288 312 336 360 384 408 432 456 480 Heat pump RXYQ 288AA 312AA 336AA 360AA 384AA 408AA 432AA 456AA 480AA TJA RXYQ AAYDA 46...

Page 18: ...pe FXDQ 07M 09M 12M 18M 24M MSP concealed ducted type FXSQ 05TB 07TB 09TB 12TB 15TB 18TB 24TB 30TB 36TB 48TB 54TB Ceiling mounted duct type Middle and high static pressure FXMQ 07PB 09PB 12PB 15PB 18P...

Page 19: ...ance 2 1 Outdoor Unit Single Outdoor Unit RXYQ72AATJA RXYQ72AAYDA RXYQ192AATJA RXYQ216AATJA RXYQ240AATJA RXYQ192AAYDA RXYQ216AAYDA RXYQ240AAYDA RXYQ96AATJA RXYQ144AATJA RXYQ120AATJA RXYQ168AATJA RXYQ9...

Page 20: ...JA RXYQ360AAYDA 30 ton RXYQ384AATJA RXYQ408AATJA RXYQ432AATJA RXYQ456AATJA RXYQ480AATJA RXYQ384AAYDA RXYQ408AAYDA RXYQ432AAYDA RXYQ456AAYDA RXYQ480AAYDA 32 34 36 38 40 ton RXYQ264AATJA RXYQ312AATJA RX...

Page 21: ...ette type FXZQ TB Shown with BYFQ60C3W2W Ceiling mounted duct type FXMQ M 4 way blow ceiling suspended type FXUQ PA Ceiling suspended type FXHQ M One way blow cassette type FXEQ P Wall mounted type FX...

Page 22: ...arance SiUS342303E 15 Part 1 General Information 2 3 Air Treatment Equipment Cased coil unit CXTQ TA Low temperature hydrobox HXY TA Outdoor air processing unit FXMQ MF Energy recovery ventilator VAM...

Page 23: ...kit 1 72 96 120 144 168 192 216 240 6 1 h 8 1 h 10 1 h 12 1 h 14 1 h 16 1 h 18 1 h 20 1 h 22 2 h h BHFP22P100U BHFP22P100UA KHFP26P100UA 2 24 2 hh 26 2 h h 28 2 hh 30 2 h h 32 2 hh 34 2 h h 36 2 hh 3...

Page 24: ...oor units is more than 130 low airflow operation is enforced in all the indoor units This limitation can be deactivated through field setting Refer to page 202 for detail When outdoor air processing u...

Page 25: ...AATJA 312AAYDA 336AATJA 336AAYDA 360AATJA 360AAYDA 384AATJA 384AAYDA Maximum number of connectable indoor units 41 45 49 54 58 62 64 Maximum number of connectable hydrobox 4 4 4 5 5 6 6 Total capacity...

Page 26: ...pipes Liquid pipe in mm 3 8 9 5 C1220T brazing connection 3 8 9 5 C1220T brazing connection Gas pipe in mm 3 4 19 1 C1220T brazing connection 7 8 22 2 C1220T brazing connection Weight lbs kg 496 225 6...

Page 27: ...Liquid pipe in mm 1 2 12 7 C1220T brazing connection 1 2 12 7 C1220T brazing connection Gas pipe in mm 1 1 8 28 6 C1220T brazing connection 1 1 8 28 6 C1220T brazing connection Weight lbs kg 683 310...

Page 28: ...Liquid pipe in mm 5 8 15 9 C1220T brazing connection 5 8 15 9 C1220T brazing connection Gas pipe in mm 1 1 8 28 6 C1220T brazing connection 1 1 8 28 6 C1220T brazing connection Weight lbs kg 750 340 9...

Page 29: ...Liquid pipe in mm 5 8 15 9 C1220T brazing connection 5 8 15 9 C1220T brazing connection Gas pipe in mm 1 1 8 28 6 C1220T brazing connection 1 3 8 34 9 C1220T brazing connection Weight lbs kg 904 410 9...

Page 30: ...2 Airflow rate cfm m min 8 965 253 9 9 935 281 3 9 935 281 3 9 935 281 3 Drive Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing...

Page 31: ...Airflow rate cfm m min 9 935 281 3 9 935 281 3 9 935 281 3 9 935 281 3 Drive Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing con...

Page 32: ...w rate cfm m min 9 935 281 3 13 665 386 9 13 665 386 9 13 665 386 9 Drive Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing connec...

Page 33: ...w rate cfm m min 13 665 386 9 14 510 410 8 14 510 410 8 14 510 410 8 Drive Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing conne...

Page 34: ...w rate cfm m min 14 510 410 8 14 510 410 8 14 510 410 8 14 510 410 8 Drive Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing conne...

Page 35: ...pipe in mm 3 8 9 5 C1220T brazing connection 3 8 9 5 C1220T brazing connection Gas pipe in mm 3 4 19 1 C1220T brazing connection 7 8 22 2 C1220T brazing connection Weight lbs kg 507 230 694 315 Sound...

Page 36: ...uid pipe in mm 1 2 12 7 C1220T brazing connection 1 2 12 7 C1220T brazing connection Gas pipe in mm 1 1 8 28 6 C1220T brazing connection 1 1 8 28 6 C1220T brazing connection Weight lbs kg 694 315 761...

Page 37: ...id pipe in mm 5 8 15 9 C1220T brazing connection 5 8 15 9 C1220T brazing connection Gas pipe in mm 1 1 8 28 6 C1220T brazing connection 1 1 8 28 6 C1220T brazing connection Weight lbs kg 761 345 915 4...

Page 38: ...id pipe in mm 5 8 15 9 C1220T brazing connection 5 8 15 9 C1220T brazing connection Gas pipe in mm 1 1 8 28 6 C1220T brazing connection 1 3 8 34 9 C1220T brazing connection Weight lbs kg 915 415 915 4...

Page 39: ...irflow rate cfm m min 8 965 253 9 9 935 281 3 9 935 281 3 9 935 281 3 Drive Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing conn...

Page 40: ...low rate cfm m min 9 935 281 3 9 935 281 3 9 935 281 3 9 935 281 3 Drive Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing connect...

Page 41: ...te cfm m min 9 935 281 3 13 665 386 9 13 665 386 9 13 665 386 9 Drive Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing connection...

Page 42: ...te cfm m min 13 665 386 9 14 510 410 8 14 510 410 8 14 510 410 8 Drive Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing connectio...

Page 43: ...te cfm m min 14 510 410 8 14 510 410 8 14 510 410 8 14 510 410 8 Drive Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing connectio...

Page 44: ...3 Indoor Low Temperature Hydrobox 45 1 4 Outdoor Air Processing Unit 46 2 Functional Parts Layout 47 2 1 RXYQ72AA 47 2 2 RXYQ96 120AA 49 2 3 RXYQ144 168AA 51 2 4 RXYQ192 216 240AA 53 3 Refrigerant Flo...

Page 45: ...ger 14 Y4S Solenoid valve Accumulator oil return Used to return oil from the accumulator to the compressor 15 Y5S Solenoid valve Four way valve Used to switch outdoor heat exchanger to evaporator or c...

Page 46: ...o detect discharge pipe temperature 38 R14T Thermistor M1C compressor body for 96 240 class Detects compressor surface temperature this switch is activated at surface temperature of 120 C 248 F or mor...

Page 47: ...iUS342303E Refrigerant Circuit Piping Diagrams Part 2 Refrigerant Circuit 40 RXYQ72AATJA RXYQ72AAYDA 5HOHDVH YDOYH C 3D144830A 1 3 5 6 7 8 9 11 13 14 15 17 18 19 21 22 23 25 26 27 28 29 30 32 39 40 41...

Page 48: ...ping Diagrams SiUS342303E 41 Part 2 Refrigerant Circuit RXYQ96 120 144 168AATJA RXYQ96 120 144 168AAYDA 5HOHDVH YDOYH 2 C 3D144828A 1 4 3 5 6 7 8 9 11 12 13 14 15 17 18 19 20 21 23 24 25 26 27 28 29 3...

Page 49: ...t Piping Diagrams Part 2 Refrigerant Circuit 42 RXYQ192 216 240AATJA RXYQ192 216 240AAYDA 5HOHDVH YDOYH 2 1 5 6 7 8 9 11 12 13 14 15 17 18 19 20 21 25 26 27 28 29 30 32 37 39 38 40 41 C 3D143019A 10 1...

Page 50: ...d for gas superheating degree control while in cooling or subcooling degree control while in heating 4 Gas pipe thermistor R3T R3T R3T Used for gas superheating degree control while in cooling 5 Disch...

Page 51: ...ing connection port 3 4 2 1 C 4D043864N LOWHU HDW H FKDQJHU LTXLG SLSH FRQQHFWLRQ SRUW LOWHU DQ OHFWURQLF H SDQVLRQ YDOYH 0 DV SLSH FRQQHFWLRQ SRUW C 4D141716 4 2 1 3 Indoor heat exchanger Fan Filter...

Page 52: ...ipe R3T Detects the liquid pipe temperature of the plate type heat exchanger It is used to judge the freeze up prevention control in cooling operation 7 Thermistor refrigerant gas pipe R4T Detects the...

Page 53: ...tube Used to reduce pressure from high to low in bypassing hot gas 4 R1T Suction air thermistor Used to turn ON or OFF the thermostat 5 R2T Liquid pipe thermistor Used to control the opening degree o...

Page 54: ...e Oil separator oil return Thermistor M1C discharge pipe Y4E Y5S Electronic expansion valve Refrigerant auto charge Y1E Electronic expansion valve Heat exchanger main R4T Thermistor Electrical box air...

Page 55: ...t exchanger Electronic expansion valve Refrigerant cooling IPM R6T Y2E Electronic expansion valve Refrigerant cooling air Y5E Thermistor Subcooling liquid pipe Thermistor Subcooling gas pipe 3 3 3 5 1...

Page 56: ...PL Low pressure sensor Y1S Solenoid valve Oil separator oil return 2 Thermistor M2C discharge pipe R15T Y4E Y2S Solenoid valve Oil separator oil return 1 Y5S R16T Thermistor M2C compressor body Electr...

Page 57: ...Electronic expansion valve Refrigerant cooling IPM R6T Y2E Electronic expansion valve Refrigerant cooling air Y5E Thermistor Subcooling liquid pipe Thermistor Subcooling gas pipe 3 3 3 3 5 3 5 3 1 1 3...

Page 58: ...PL Low pressure sensor Y1S Solenoid valve Oil separator oil return 2 Thermistor M2C discharge pipe R15T Y4E Y2S Solenoid valve Oil separator oil return 1 Y5S R16T Thermistor M2C compressor body Electr...

Page 59: ...lectronic expansion valve Refrigerant cooling IPM R6T Y2E Electronic expansion valve Refrigerant cooling air Y5E Thermistor Subcooling liquid pipe Thermistor Subcooling gas pipe 3 3 3 5 3 5 3 3 3 3 3...

Page 60: ...or S1NPH High pressure sensor Y1S Solenoid valve Oil separator oil return 2 Thermistor M2C discharge pipe R15T Y4E Y2S Solenoid valve Oil separator oil return 1 Thermistor Heat exchanger right gas pip...

Page 61: ...erant cooling air Y5E Thermistor Subcooling gas pipe Thermistor Subcooling liquid pipe Y3E Electronic expansion valve Subcooling heat exchanger Solenoid valve Injection R7T Thermistor Subcooling injec...

Page 62: ...perature high pressure liquid Low temperature low pressure 5HOHDVH YDOYH OFF ON ON EV 0 pulse EV 0 pulse Fan Fan Thermostat OFF Indoor unit Filter Filter Heat exchanger Fan OFF Indoor unit Filter Filt...

Page 63: ...id Low temperature low pressure 5HOHDVH YDOYH OFF ON ON EV 224 pulses Fan Fan Thermostat OFF Indoor unit Filter Filter Heat exchanger Fan OFF Indoor unit Filter Filter Heat exchanger Fan ON Fan ON The...

Page 64: ...liquid Low temperature low pressure 5HOHDVH YDOYH OFF ON ON Fan Fan Thermostat OFF Indoor unit Filter Filter Heat exchanger Fan OFF Indoor unit Filter Filter Heat exchanger Fan OFF Fan OFF Thermostat...

Page 65: ...d Low temperature low pressure 5HOHDVH YDOYH OFF ON ON EV 0 pulse EV 0 pulse Fan Fan Thermostat OFF Indoor unit Filter Filter Heat exchanger Fan OFF Indoor unit Filter Filter Heat exchanger Fan ON Fan...

Page 66: ...ressure liquid Low temperature low pressure 5HOHDVH YDOYH OFF ON ON EV 0 pulse EV 0 pulse Fan Fan Thermostat OFF Indoor unit Filter Filter Heat exchanger Fan OFF Indoor unit Filter Filter Heat exchang...

Page 67: ...id Low temperature low pressure 5HOHDVH YDOYH OFF ON ON EV 224 pulses Fan Fan Thermostat OFF Indoor unit Filter Filter Heat exchanger Fan OFF Indoor unit Filter Filter Heat exchanger Fan ON Fan ON The...

Page 68: ...liquid Low temperature low pressure 5HOHDVH YDOYH OFF ON ON Fan Fan Thermostat OFF Indoor unit Filter Filter Heat exchanger Fan OFF Indoor unit Filter Filter Heat exchanger Fan OFF Fan OFF Thermostat...

Page 69: ...d Low temperature low pressure 5HOHDVH YDOYH OFF ON ON EV 0 pulse EV 0 pulse Fan Fan Thermostat OFF Indoor unit Filter Filter Heat exchanger Fan OFF Indoor unit Filter Filter Heat exchanger Fan ON Fan...

Page 70: ...ssure liquid Low temperature low pressure 5HOHDVH YDOYH OFF ON ON EV 0 pulse EV 0 pulse Fan Fan Thermostat OFF Indoor unit Filter Filter Heat exchanger Fan OFF Indoor unit Filter Filter Heat exchanger...

Page 71: ...id Low temperature low pressure 5HOHDVH YDOYH OFF ON ON EV 224 pulses Fan Fan Thermostat OFF Indoor unit Filter Filter Heat exchanger Fan OFF Indoor unit Filter Filter Heat exchanger Fan ON Fan ON The...

Page 72: ...liquid Low temperature low pressure 5HOHDVH YDOYH OFF ON ON Fan Fan Thermostat OFF Indoor unit Filter Filter Heat exchanger Fan OFF Indoor unit Filter Filter Heat exchanger Fan OFF Fan OFF Thermostat...

Page 73: ...d Low temperature low pressure 5HOHDVH YDOYH OFF ON ON EV 0 pulse EV 0 pulse Fan Fan Thermostat OFF Indoor unit Filter Filter Heat exchanger Fan OFF Indoor unit Filter Filter Heat exchanger Fan ON Fan...

Page 74: ...C1H71W 83 3 3 When Wireless Remote Controller is Used Together 85 4 Address Setting for Wireless Remote Controller 86 5 Centralized Control Group No Setting 88 5 1 BRC1E73 88 5 2 BRC1H71W 90 5 3 Wirel...

Page 75: ...2016EA Series Wired remote controller Wireless remote controller Navigation Madoka FXFQ T BRC1E73 BRC1H71W FXZQ TB BRC082A42W for BYFQ60C3W2W BRC082A41W for BYFQ60B3W1 FXUQ PA FXEQ P FXDQ M BRC4C82 FX...

Page 76: ...nds to press the buttons on the remote controller damage may result 1 Operation mode selector button Press this button to select the operation mode of your preference Available modes vary with the ind...

Page 77: ...ighlight the next items on the right hand side Each screen is scrolled in the right hand direction 7 Left button Used to highlight the next items on the left hand side Each screen is scrolled in the l...

Page 78: ...n mode changeover Fan speed control Menu display Confirmation of each setting On Off Cancel Operation lamp Press the Cancel button for 4 seconds or more Press the Cancel button once Press the Cancel b...

Page 79: ...ating Blinks red Error is occurring Lights up blinks green Bluetooth connecting c LCD Displays the current setpoint and air conditioner operation status d NAVIGATE ADJUST button Navigate right Adjust...

Page 80: ...Installer menu Bluetooth Setting This screen is a menu for the administrator See the next page for items which can be selected 12 34 A3 01 Unit 00 This screen displays the time and the status of the r...

Page 81: ...ction Airflow direction 1 setting h Depends on current setting Vertical Airflow Airflow direction 2 setting h Depends on current setting Ventilation Mode Ventilation mode setting h Depends on current...

Page 82: ...Contrast Contrast setting h h Clock Setting Clock setting h h Standard Temp Scale reference temperature setting h h About Administrator information h h Admin Password Administrator password setting h...

Page 83: ...o change the operation mode between cool and heat i Under centralized control Displayed if the system is under the management of a multi zone controller Optional and the operation of the system throug...

Page 84: ...controller setting Text mode Auto Cool 73 Room Icon mode 73 F 74 Text mode Scale screen Auto Cool Cool Warm Icon mode Scale screen When in the scale screen the setpoint can be changed in the range of...

Page 85: ...play the information screen Home screen Auto Cool 73 Room 73 F 74 Text mode Icon mode Press and hold on the Home screen for 5 seconds Information screen 12 34 The screen switches to the Information sc...

Page 86: ...ntroller during this time Not Displayed The remote controller has master control Able to select heating cooling operation Backup Indicates that backup operation is being carried out Energy savings Ind...

Page 87: ...The display shows the set fan speed When the INSPECTION TEST button is pressed the display shows the system mode is in 13 14 15 16 17 TIMER RESERVE CANCEL BUTTON AIRFLOW DIRECTION ADJUST BUTTON OPERA...

Page 88: ...nge a remote controller from Main to Sub proceed as follows 3 1 1 Field Settings The designation of the main and sub remote controllers can be swapped Note that this change requires turning the power...

Page 89: ...ou may change the Main Sub setting of the remote controller while Checking the connection Please stand by is displayed by pressing and holding the Mode Selector button for 4 seconds or longer 1 It is...

Page 90: ...to operation mode Filter auto clean Setback temperature setpoints Draft prevention If a sub controller does not display the home screen 2 minutes after its designation turn off the power Individual ai...

Page 91: ...nation 1 main 2 sub Home screen 2 When the U5 error code appears press and hold until 2 appears on the screen When the U8 error code appears press and hold until 1 appears on the screen Result A contr...

Page 92: ...a wired and a wireless remote controller for 1 indoor unit the wired controller should be set to Main Therefore the Main Sub switch SS1 of the signal receiver PCB must be set to Sub Main Sub Main Sub...

Page 93: ...e below The address for the wireless remote controller is set to 1 at the factory To change the setting proceed as follows 1 Press FILTER SIGN RESET button and INSPECTION TEST button at the same time...

Page 94: ...ngs A b Remote Controller Indoor Unit Multiple setting Display on remote controller Behavior to the remote controller operation when the functions are restricted as by an external control Other than t...

Page 95: ...up Address Select Group Address and then press the Menu OK button Press the Cancel button once Press the Cancel button once Service settings menu is displayed Item 2 is displayed Item 2 is displayed I...

Page 96: ...h the operation manual for maintenance Group Address Group Select Group Address and then press the Menu OK button Select Group Address Group and then press the Menu OK button Select the desired Group...

Page 97: ...en a centralized controller is connected The group and unit address can be set and released NOTICE Don t forget to release the group address before disconnecting the centralized controller because the...

Page 98: ...out 1 minute on the liquid crystal display This is not an operative fault UP button DOWN button MODE button RESERVE button Mode No Field setting mode Group No INSPECTION TEST button Central Remote Con...

Page 99: ...Cancel button for 4 seconds or more Press and hold the Cancel button for 4 seconds or more Select the desired item from the Maintenance menu and then press the Menu OK button Maintenance menu is displ...

Page 100: ...Unit Unit No Gr Addr Set Indoor unit Airnet Address Unit No Address Set Outdoor unit Airnet Address Unit No Address Set Error History RC Error History Unit No Error Date Time Up to 10 errors received...

Page 101: ...d rpm 2 FLAP Swing fixed EV Degree that electronic expansion valve is open pulse MP Drain pump ON OFF EH Electric heater ON OFF Hu Humidifier ON OFF 3 TBF Anti freezing control ON OFF FLOAT Float swit...

Page 102: ...y sending to the gas furnace Displays the fan demand that CXTQ TA is currently sending to the gas furnace Current status of heat pump ON OFF for CXTQ TA HP OFF 00 HP ON 01 Current status of gas combus...

Page 103: ...SiUS342303E Administrator Menu Installer Menu Part 3 Remote Controller 96 7 Administrator Menu Installer Menu 7 1 BRC1H71W Refer to page 74 for details...

Page 104: ...door Fans 110 6 Protection Control 111 6 1 High Pressure Protection Control 111 6 2 Low Pressure Protection Control 112 6 3 Discharge Pipe Protection Control 112 6 4 Inverter Protection Control 113 7...

Page 105: ...Control for Preventing Ceiling Dirt 139 9 11 Heater Control Except FXTQ TA Models 140 9 12 Heater Control FXTQ TA Models 141 9 13 Gas Furnace Control CXTQ TA Models 144 9 14 3 Step Thermostat Processi...

Page 106: ...equalization before startup 1 Startup control in cooling 2 Startup control in heating Basic control 1 Normal control 2 Compressor PI control 3 Operation priority and rotation of compressors 4 Compres...

Page 107: ...aches certain number Refer to Error Codes and Descriptions on page 234 of the troubleshooting for the items to determine the error 2 2 When System is in Stop Control The four way valves retain the con...

Page 108: ...the pressure within the refrigerant system In addition the outdoor fan carry out the residual operation for a while to accelerate pressure equalizing and to suppress migration of the refrigerant to th...

Page 109: ...temperature 4 1 Startup Control in Cooling 4 2 Startup Control in Heating 0 rps 0 pulse 3 000 pulse fully open EV indoor opening Tcmax 48 C 118 4 F OR Ta 20 C OFF 68 F Ta 20 C Step 4 68 F Rotation sp...

Page 110: ...g degree control 0 pulse in low load Superheating degree control 0 pulse in low load Electronic expansion valve Refrigerant cooling IPM Y2E Cooling refrigerant control Cooling refrigerant control Elec...

Page 111: ...tion or condensation temperature is elevated further to adjust 2 VRT Control When one or more of the connected indoor units are not VRTsmart control applicable models If the required capacity becomes...

Page 112: ...RXYQ72AA Heating upper limit 15 19 0 81 48 5 16 19 4 82 49 1 17 19 8 83 49 8 18 20 1 84 50 5 19 20 5 85 51 2 20 20 7 86 52 0 21 21 0 87 52 7 22 21 3 88 53 4 23 21 6 89 54 2 24 21 9 90 54 9 25 22 2 91...

Page 113: ...81 95 5 108 3 95 5 108 3 32 25 8 0 0 25 8 0 0 107 34 6 38 7 34 6 38 7 182 96 8 109 8 96 8 109 8 33 26 2 0 0 26 2 0 0 108 35 1 39 2 35 1 39 2 183 98 1 111 3 98 1 111 3 34 26 5 0 0 26 5 0 0 109 35 6 39...

Page 114: ...29 2 185 94 2 89 2 94 2 89 2 36 27 2 0 0 0 0 0 0 111 33 7 29 6 33 7 29 6 186 95 6 90 6 95 6 90 6 37 27 6 0 0 0 0 0 0 112 34 2 30 0 34 2 30 0 187 96 9 91 9 96 9 91 9 38 27 9 0 0 0 0 0 0 113 34 7 30 4 3...

Page 115: ...0 0 110 32 0 37 0 32 0 37 0 185 95 1 100 2 95 1 100 2 36 24 8 0 0 24 8 0 0 111 32 5 37 5 32 5 37 5 186 96 5 101 6 96 5 101 6 37 25 1 0 0 25 1 0 0 112 33 0 38 0 33 0 38 0 187 97 9 103 0 97 9 103 0 38...

Page 116: ...se of the subcooling heat exchanger this function is used to exert PI control on the electronic expansion valve Y3E so that the evaporator side gas pipe superheating degree SH will become constant SC...

Page 117: ...380 404 380 307 297 307 297 5 394 394 502 451 502 451 456 418 456 418 6 459 459 721 620 721 620 678 585 678 585 7 535 535 897 751 897 751 816 698 816 698 8 644 644 1 025 881 1 025 881 1 072 925 1 072...

Page 118: ...performed in the entire system Normal control High pressure standby Reduce compressor capacity step When occurring 3 times within 40 minutes high pressure switch is activated without high pressure st...

Page 119: ...tdoor air temperature Ti Compressor body temperature A Maximum of HTdi and Ti The following control is performed for each compressor of single unit as well as multi units Normal control Low pressure s...

Page 120: ...TJA RXYQ192 216 240AATJA M1C M2C M1C M2C M1C M2C A more than 49 0 A more than 30 5 A more than 30 5 A more than 30 5 A more than 49 0 A more than 49 0 A more than 49 0 A B less than 48 3 A less than 2...

Page 121: ...ess than 97 C 207 F less than 97 C 207 F less than 100 C 212 F less than 100 C 212 F less than 100 C 212 F C more than 108 C 226 F more than 103 C 217 F more than 103 C 217 F more than 103 C 217 F mor...

Page 122: ...ectric symbol Function of functional part Compressor motor M1C M2C RXYQ72AA 37 5 rps RXYQ96 120AA 60 0 rps 60 0 rps RXYQ144 168AA 60 0 rps 37 5 rps RXYQ192 240AA 37 5 rps 37 5 rps Fan motor M1F M2F Fo...

Page 123: ...lse Electronic expansion valve Refrigerant auto charge Y4E 40 pulse Electronic expansion valve Refrigerant cooling air Y5E Same as normal control Solenoid valve Oil separator oil return Y1S Y2S ON Sol...

Page 124: ...Refrigerant cooling air Y5E Same as normal control Solenoid valve Oil separator oil return Y1S Y2S ON Solenoid valve Hot gas bypass Y3S ON Solenoid valve Accumulator oil return Y4S ON Solenoid valve...

Page 125: ...expansion valve Refrigerant auto charge Y4E Minimum pulse Electronic expansion valve Refrigerant cooling air Y5E Same as normal control Solenoid valve Oil separator oil return Y1S Y2S ON Solenoid val...

Page 126: ...operation or One of the outdoor units is stopped for 20 minutes or more Example The following diagram shows outdoor unit rotation Master unit and sub unit in this section are the names for installati...

Page 127: ...n is not available 2 Emergency operation with outdoor unit PCB setting Setting method Make setting of the unit the operation of which is to be disabled in field setting mode setting mode 2 Details of...

Page 128: ...ption OFF ON MF MF OFF MP Drain pump kit MP Drain pump kit MP Drain pump kit ON MP Drain pump kit ON MP Closed Electronic expansion valve Capacity control Electronic expansion valve Closed YE MA OFF E...

Page 129: ...Hu Fan Operating in L mode MF Fan Operating in L mode after it stops for 6 min MF YE Drain pump kit YE MP Swing flap Swing flap Set wind direction Fan MF Operating with set airflow rate YE Closed Prog...

Page 130: ...progress 4 min Is hot starting in progress Is defrost operation in progress Heating Operation A B Thermostat status No No 15 16 Option Option Option Option OFF Humidifier ON OFF Humidifier OFF ON Humi...

Page 131: ...ction from the remote controller the fan is put into operation in LL mode while in heating operation 13 Wind direction When the heating thermostat turns OFF the wind direction will be set to 100 horiz...

Page 132: ...ing in heating operation Control target temperature remote controller displayed temperature 2 C 3 6 F The temperature difference for cooling heating mode switching is 5 C 9 F The above also applies to...

Page 133: ...suction air thermistor and the infrared floor sensor It is difficult to use only suction air temperature control for underfoot air conditioning The temperature difference for cooling heating mode swit...

Page 134: ...temperature fine adjustment control is carried out using a suction air thermistor or using the remote controller thermistor near the position of the user when the suction temperature is near the set...

Page 135: ...ure Assuming the set temperature in the figure above is 24 C 75 F and the suction temperature has changed from 18 C 64 F to 28 C 82 F A D This example also assumes there are several other air conditio...

Page 136: ...or 14 24 5 for FXTQ TA CXTQ TA is set to 02 Tro will be the same as the cooling set temperature T Room temperature Remote controller set temperature Tro Room temperature at the start of dry operation...

Page 137: ...perature to operate outside of use range To avoid the above condition a limit based on the suction air temperature is set for the use range of the temperature around people Cooling operation When the...

Page 138: ...e Control temp Differential value set to 1 C 1 8 F Set heating temp Set cooling temp Heating mode Control temp Differential value set to 2 C 3 6 F Heating mode Control temp Differential value set to 3...

Page 139: ...usly After the thermostat turns OFF the drain pump continues to operate for another 5 minutes Float switch Error display Thermostat running OFF OFF ON ON ON OFF Drain pump ON OFF 5 min OFF OFF ON ON O...

Page 140: ...he drain pump turns ON simultaneously 1 If the float switch continues to turn OFF and ON 5 times consecutively it is judged as a drain system error and the error code AF is displayed on the remote con...

Page 141: ...lower As T Remote controller set temp Suction air temp becomes smaller SHS becomes higher Subcooling degree control in heating operation This function is used to adjust the opening of the electronic...

Page 142: ...re 1 C 30 2 F for total of 40 minutes or Liquid pipe temperature 5 C 23 F for total of 10 minutes Condition for cancelling Liquid pipe temperature 7 C 44 6 F for 10 minutes continuously Concept of fre...

Page 143: ...r total of 15 minutes or Liquid pipe temperature 0 C 32 F for 1 minute continuously During freeze up prevention control the airflow rate is fixed to LL The cancelling conditions are same as the standa...

Page 144: ...m thermostat OFF mode for prevention of cold air Swing LL Horizontal Horizontal Horizontal Horizontal Airflow direction set LL Horizontal Horizontal Horizontal Horizontal Stop Swing OFF Horizontal Hor...

Page 145: ...s OFF before initiating the hot start OFF Hot start control Hot start in progress Normal control Normal control H L remote controller setting LL OFF Remote controller setting P0 Horizontal Fan Louver...

Page 146: ...d FXEQ P models Factory setting FXFQ T models draft prevention position FXZQ TB FXEQ P models standard position 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 p...

Page 147: ...cted by converting the heater temperature into the condensing pressure equivalent saturated temperature Tc according to the temperature detection through the high pressure sensor S1NPH of the outdoor...

Page 148: ...electric heater Heating Automatic heating Auxiliary heater enabled 1 Not in heating Automatic heating Auxiliary heater enabled 0 3 Heater not allowed Heater allowed Heater 1 OFF Heater 2 OFF OR OR OR...

Page 149: ...1 4 OR Not during defrost oil return Fan motor system error Heater ON permission Defrost oil return 0 4 1 High pressure condition 2 Liquid pipe temperature condition 3 Auxiliary heater enabled 4 Heate...

Page 150: ...operation Heater 1 ON Heater 2 ON OFF for single heater Fan ON Electric heater capacity setting Setting not available Thermostat step 2 ON Time up Electric heater capacity setting Setting available N...

Page 151: ...furnace combustion heating Detail The airflow rate during gas furnace operation depends on the intensity of combustion heating and therefore may be different from the airflow setting displayed on the...

Page 152: ...er to page 164 4 A and B values vary automatically based on the field setting 12 22 2 5 If directly after a change in conditions it is such that the thermostat could be either ON or OFF controlled tem...

Page 153: ...ater is ON the airflow rate of the fan will be whichever is the largest between the CFM dictated by the heater s own capacity or the fan tap CFM determined by other controls 2 Fan residual operation w...

Page 154: ...rmostat ON signal Cooling mode When the thermostat is ON External output ON 2 OR Tcon Ts continues for 1 minute Economizer set time 3 Free cooling only Economizer set time 3 Free cooling only Thermost...

Page 155: ...de 180 2 Field Setting from Outdoor Unit 182 2 1 DIP Switch Setting when Mounting a Spare PCB 182 2 2 Accessing the BS Buttons on the PCB 184 2 3 Operating the BS Buttons and DIP Switches on the PCB 1...

Page 156: ...e case of group total setting 1 Press and hold Cancel button for 4 seconds or more Service settings menu is displayed 2 Select Field Settings in the Service Settings menu and press Menu OK button Fiel...

Page 157: ...en returns 8 In the case of multiple setting changes repeat 3 to 7 9 After all setting changes are completed press Cancel button twice 10 Backlight goes out and Checking the connection Please standby...

Page 158: ...ext mode Icon mode Mode 20 Unit 00 Enter Return Mode 20 Unit 00 a b Press or button to select Mode No and press a Mode No b Unit No Sub menu screen Text mode Icon mode Mode 20 Unit 00 Enter Return Mod...

Page 159: ...n mode Press or button to select Enter or and then press button to set the selection Sub menu screen Text mode Icon mode SW 00 Set Cancel 01 SW 00 01 b a Press or button select First Code No and then...

Page 160: ...e setting has been changed the screen may return to the home screen without returning to the installer menu CAUTION settings For more information see the installation manual of the optional accessory...

Page 161: ...EST button for 4 seconds during normal mode to enter the field setting mode 2 Press the MODE button to select the desired mode No 3 Press the UP button to select the first code No 4 Press the DOWN but...

Page 162: ...mperature Ton Toff 2 Auxiliary electric heater OFF temperature Toff 3 Setting of airflow rate when heating Standard Slightly increased Increased 165 3 Electric heater setting Refer to page on the righ...

Page 163: ...static pressure settings Refer to page on the right for details 173 14 24 4 Optional kit setting UV lamp humidifier economizer Refer to page on the right for details 174 5 Dry mode set temperature Roo...

Page 164: ...area detection h h h 11 21 1 Auxiliary electric heater ON temperature h h h h 1 Auxiliary electric heater ON OFF temperature h h 2 Auxiliary electric heater OFF temperature h h h h 3 Setting of airflo...

Page 165: ...setting h 11 Gas furnace test mode 15 25 0 Drain pump operation settings h 1 Humidification when heating thermostat is OFF h h h h h h h 2 Setting of direct duct connection h h h h 3 Interlocked opera...

Page 166: ...rate when heating 3 Electric heater setting h 5 Electric heater capacity setting h 6 Detection rate setting 7 Automatic airflow adjustment h 8 Compensating the temperature around people 9 Compensating...

Page 167: ...h h 1b 4 Display of error codes on the remote controller h h h h h h h h 1c 0 Room temperature display h h h h h h h h 1 Thermistor sensor for auto changeover and setback control by the remote control...

Page 168: ...sor thermistor When the Second Code No is set to 03 room temperature is controlled by the remote controller thermistor Factory setting Setting 10 20 1 01 Long life filter 02 Ultra long life filter Fil...

Page 169: ...2 87 8 91 4 95 98 6 F F 57 2 60 8 64 4 68 71 6 75 2 78 8 82 4 86 89 6 93 2 In cooling In heating Suction air temperature Suction air temperature Suction air thermistor Suction air thermistor Suction...

Page 170: ...group connection and 10 20 2 has priority for individual connection 1 4 5 Time for Absence Area Detection For units with an infrared presence sensor only By selecting the energy saving operation mode...

Page 171: ...28 C 82 4 F Heating at 20 C 68 F State of absence 30 60 60 120 Elapsed time of absence min The values in parentheses represent the time when Second code No is 02 Set temperature Toff S 1 Ton S 1 Ther...

Page 172: ...7 2 F 3 5 C 6 3 F 3 C 5 4 F 2 5 C 4 5 F 2 C 3 6 F 1 5 C 2 7 F Toff 06 0 5 C 0 9 F h h h h h h 05 0 C 0 F h h h h h 04 0 5 C 0 9 F h h h h 03 1 C 1 8 F h h h 02 1 5 C 2 7 F h h 01 2 C 3 6 F h h Availab...

Page 173: ...heater with heat pump allowed Allowed Factory setting Model Mode No First Code No Second Code No 01 02 03 04 05 06 07 08 09 10 Heater kW No heater kit 3 5 6 8 10 15 19 20 25 FXTQ09TAVJUA 11 21 5 h h...

Page 174: ...to change the airflow rate adjust it by pressing the airflow rate control button to select High Middle or Low 3 Make settings to adjust the airflow rate automatically After setting the operation mode...

Page 175: ...n on the floor temperature the Second code No 04 The infrared floor sensor can be disabled by selecting Suction air temperature only the Second code No 01 Factory setting 1 4 13 Compensating the Floor...

Page 176: ...m temperature 02 Same as cooling mode set temperature Mode No First Code No Second Code No Contents 12 22 0 01 Indoor unit thermostat ON OFF signal is provided 02 03 Output linked with Start Stop of r...

Page 177: ...y when the wireless remote controller or any central remote controller is connected Factory setting The automatic operation mode setting is made by the use of the Operation Mode Selector button 1 4 20...

Page 178: ...user might be surprised and wonder why the air conditioner turned ON suddenly 2 During maintenance if the main power supply is turned OFF while the units are in operation the units will automatically...

Page 179: ...te Factory setting 1 4 25 Setting of Airflow Direction Adjustment Range Make the following airflow direction setting according to the respective purpose Factory setting FXZQ TB FXEQ P Factory setting...

Page 180: ...150 Pa 0 60 inWG Mode No First Code No Second Code No Contents 13 23 5 01 Standard FXDQ07 12M 10 Pa 0 04 inWG FXDQ18 24M 30 Pa 0 12 inWG 02 High static pressure FXDQ07 12M 15 Pa 0 06 inWG FXDQ18 24M...

Page 181: ...120 Pa 0 48 inWG 10 130 Pa 0 52 inWG 11 140 Pa 0 56 inWG 12 150 Pa 0 60 inWG 1 13 160 Pa 0 64 inWG 1 14 180 Pa 0 72 inWG 1 15 200 Pa 0 80 inWG 1 Factory setting Mode No First Code No Second Code No C...

Page 182: ...F or below when the heating thermostat is OFF Factory setting 1 4 34 Setting of Direct Duct Connection This is used when fresh air intake kit equipped with fan is connected If the second code is set t...

Page 183: ...isplay For BRC1E73 only A Detailed display screen can be selected as the display screen This setting is used if you do not want Room temperature display to be shown on the Detailed display screen Fact...

Page 184: ...modes Setback on off may happen more frequently Setback on off may happen less frequently To avoid these issues set the offset values for auto mode Button Level 2 Level 3 Selectable Enable Unselectab...

Page 185: ...e humidifier or branch air duct is equipped due to the possibility of dew condensation This setting restricts the airflow block function preventing that the airflow block is inadvertently set to ON En...

Page 186: ...g 2 Stage 1 2 3 4 Dip switch DS1 Heat Airflow Trim 15 10 OFF OFF OFF OFF 12 8 ON OFF OFF OFF 9 6 OFF ON OFF OFF 6 4 ON ON OFF OFF 3 2 OFF OFF ON OFF 0 0 ON OFF ON OFF 3 2 OFF ON ON OFF 6 4 ON ON ON OF...

Page 187: ...n ON by central remote controller only and OFF by remote controller only Centralized Used when you want to turn ON by central remote controller only and turn ON OFF freely by remote controller during...

Page 188: ...ntrol Operation mode setting Unified operation individual operation by central remote controller or operation controlled by timer Unified OFF individual stop by central remote controller or timer stop...

Page 189: ...he configuration to the system 2 1 DIP Switch Setting when Mounting a Spare PCB After replacement with spare PCB be sure to make settings shown in the table on the following page The procedure for mak...

Page 190: ...ition of the DIP switches on spare PCB for RXYQ AA Change DIP switches at time of power disconnected Application model The setting method represents the position of switches RXYQ72AA Set DS2 2 to ON R...

Page 191: ...n the inspection door You can see the 3 BS buttons and the 3 seven segment displays and DIP switches Operate the switches and BS buttons with an insulated stick such as a closed ballpoint pen to avoid...

Page 192: ...setting is explained Initialization Default Situation Turn ON the power supply of the outdoor unit and all indoor units When the communication between indoor units and outdoor unit s is established an...

Page 193: ...on Example Checking the content of parameter 1 10 to know how many indoor units are connected to the system Mode 1 Setting 10 Make sure the segment indication is displayed in operational default mode...

Page 194: ...utton again to start operation according to the chosen value Example Checking the content of parameter 2 18 to define the high static pressure setting of the outdoor unit s fan Mode 2 Setting 18 Make...

Page 195: ...ons Night time low noise operation reduces the sound generated by the unit compared to nominal operating conditions Night time low noise operation can be set in mode 2 There are two methods to activat...

Page 196: ...onnected to a multi system 1 35 shows the latest prediction code 1 36 shows the 2nd last prediction code 1 37 shows the 3rd last prediction code 1 38 shows the number of Mini split indoor units connec...

Page 197: ...etting Used to make setting of targeted condensing temperature for heating operation 2 0 9 Auto 41 C 106 F 43 C 109 F 46 C 115 F 0 1 3 6 11 Eco setting is available from an external input When this co...

Page 198: ...1 2 3 4 5 6 7 8 31 Demand 2 setting Used to use a targeted power current level when the demand 2 control signal is input 2 3 1 Level 1 40 Level 2 50 Level 3 55 1 2 3 32 Normal demand setting Used to s...

Page 199: ...1 Automatic Forced master Forced sub 0 1 2 52 Auxiliary heater maximum allowable temperature release differential Auxiliary heater is not allowed to energize when the outdoor air temperature is recov...

Page 200: ...ndoor unit to be the operation mode selector system power OFF ON is required after applying this setting 2 8 3 VRV indoor unit has mode selection right Mini split indoor unit has mode selection right...

Page 201: ...door units are connected in multiple system combination 2 Sub unit for Cool Heat operation when outdoor units are connected in multiple system combination Change 2 0 to 0 1 or 2 in function of require...

Page 202: ...e to dual module installation Conditions rules apply for this setting Refer to selection software or contact your Daikin sales representative for further details 2 5 Cross wiring check by indoor fan f...

Page 203: ...t value 0 Value 2 11 Meaning Level 0 default Inactive 1 Eco mode active by low noise terminal short circuit Standard 2 Eco mode activate by demand terminal short circuit 2 C short circuit Low 3 C shor...

Page 204: ...ng of refrigerant or vacuuming process can be done properly Default value 0 To activate this function change 2 21 to 1 To stop the refrigerant recovery vacuuming mode press the RETURN BS3 button If th...

Page 205: ...62 is installed and the setting 2 12 is activated Default value 2 Change 2 25 to 1 2 or 3 in function of required level 2 26 Night time low noise operation start time Change 2 26 to 1 2 or 3 in functi...

Page 206: ...t on the inverter checker module All 3 phases and neutral are available and Inverter PCB control is active Check if the green LED HAP on the inverter PCBs are blinking normal approx 1 second If LEDs a...

Page 207: ...AAYD 460 V unbalance maximum 2 Check 2 DC voltage at connector X3A increases to 260 VDC for RXYQ72AATJ at connector X3A and X4A increases to 260 VDC for RXYQ96 240AATJ at connector X3A increases to 60...

Page 208: ...t time low noise operation start setting Low noise mode instructing Operation sound set with external low noise setting 10 00 PM 8 00 PM 12 00 AM 6 00 AM 7 00 AM 8 00 AM Set with night time low noise...

Page 209: ...tion not active 1 Follows 2 30 setting 2 Follows 2 31 setting Change 2 32 0 1 or 2 in function of required limitation 2 34 Indoor fan tap setting Indoor units fan speed limitation related to connectio...

Page 210: ...than outdoor units and the height difference between the lowest indoor unit and the outdoor unit exceeds 50 m 164 ft the setting 2 49 has to be changed to 1 2 51 Master Sub setting Multi When 2 module...

Page 211: ...9 For more information and advice about the effect of these settings refer to Energy Saving and Optimum Operation on page 215 2 83 Master user interface allocation in case VRV indoor units and Mini sp...

Page 212: ...g 2 It is possible to operate system with U4 warning when some indoor units are temporarily without power supply Following conditions need to fulfil Maximum equivalent piping length of the farthest in...

Page 213: ...Auxiliary heater maximum allowable temperature Auxiliary heater is allowed to energize when the ambient temperature is smaller than the auxiliary heater maximum allowable temperature Auxiliary heater...

Page 214: ...Type I Value 2 16 Auxiliary heater 0 default OFF 1 ON 2 37 Auxiliary heater setting Type II Value 2 37 Controlling mode 0 default OFF 1 Mode 1 2 Mode 2 3 Mode 3 4 Mode 4 5 Mode 5 6 Mode 6 Type Descrip...

Page 215: ...sure sensor E4 Compressor motor lock E5 Compressor damage alarm E6 Outdoor fan motor abnormality E7 Electronic expansion valve coil abnormality E9 Position signal abnormality of outdoor unit fan motor...

Page 216: ...is smaller than the Heat Pump Lockout Temperature below this setting is only affective when heat pump lockout mode has been set Unit will switch to heat pump lockout Heat pump lockout temperature Fah...

Page 217: ...stem into normal operation mode B When night time low noise operation is carried out automatically External control adaptor for outdoor unit is not required 1 While in setting mode 2 select a night ti...

Page 218: ...M 12 00 AM 7 00 AM 8 00 AM Set with night time low noise operation end setting Factory setting is 8 00 AM Set with night time low noise operation start setting Factory setting is 10 00 PM Operation so...

Page 219: ...en the Normal demand operation is carried out Use of the external control adaptor for outdoor unit is not required 1 While in setting mode 2 set the item 2 32 Setting of alternate demand to ON 2 While...

Page 220: ...t with Demand 1 level 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...

Page 221: ...operation are displayed 2 Setting mode 2 H1P ON 1 In setting 1 press and hold the MODE BS1 button for more than 5 seconds Setting mode 2 is entered and H1P lights 2 Press the SET BS2 button several ti...

Page 222: ...o match the required load which is also related to the outdoor air conditions E g when your system is operating in cooling you do not need as much cooling under low outdoor air temperatures e g 77 F 2...

Page 223: ...requested refrigerant temperature in order to achieve the required room temperature very fast The overshoot undershoot is allowed from the start up moment In case of cooling operation the evaporating...

Page 224: ...ection control To activate the eco comfort setting under cooling operation change field setting 2 81 to 0 To activate the eco comfort setting under heating operation change field setting 2 82 to 0 No...

Page 225: ...6 Fuses circuit breakers or protection devices Check that the fuses circuit breakers or the locally installed protection devices are of the size and type specified in chapter Electrical wiring work i...

Page 226: ...our hands may suffer burns or frostbite if you touch the refrigerant pipes To avoid injury give the pipes time to return to normal temperature or if you must touch them be sure to wear proper gloves E...

Page 227: ...ndication may change These are not malfunctions Procedure 1 Close all front panels in order to not let it be the cause of misjudgment 2 Make sure all field settings you want are set 3 Turn ON the powe...

Page 228: ...234 to perform correcting actions Carry out the test operation again and confirm that the abnormality is properly corrected 3 4 Error Code In case an error code is displayed perform correcting action...

Page 229: ...d if the compressor is running at this time After that the gas furnace will run in tens of seconds Tens of minutes might well be needed to stop compressor if the outdoor unit is particular operation 7...

Page 230: ...erload Overcurrent Lock of Indoor Fan Motor 260 3 10 Blower Motor Not Running 261 3 11 Indoor Fan Motor Status Abnormality 262 3 12 Low Indoor Airflow 263 3 13 Swing Flap Motor Abnormality 264 3 14 Po...

Page 231: ...ity 324 3 51 Compressor Instantaneous Overcurrent 327 3 52 Compressor Overcurrent 329 3 53 Compressor Startup Abnormality 331 3 54 Transmission Error between Inverter PCB and Outdoor Unit Main PCB 333...

Page 232: ...s 370 4 Check 371 4 1 High Pressure Check 371 4 2 Low Pressure Check 372 4 3 Superheat Operation Check 374 4 4 Power Transistor Check 376 4 5 Refrigerant Overcharge Check 378 4 6 Refrigerant Shortage...

Page 233: ...nditioning load IN COOLING Too many heat sources e g OA equipment located in a room IN DRYING The reason is that the dry operation serves not to reduce the room temperature where possible Change the s...

Page 234: ...setting button makes no changes in the airflow rate In heating operation when the room temperature reaches the set degree the outdoor unit will stop while the indoor unit is brought to fan LL operati...

Page 235: ...elling Normal operation Outdoor unit Pitch of operating sounds changes The reason is that the compressor changes the operating frequency Normal operation 12 Dust comes out from the system Dust comes o...

Page 236: ...Cause 1 The gas furnace does not start operation The gas furnace does not start operation while the compressor is during operation or under stop control or right after defrost IN or defrost OUT Wait...

Page 237: ...P0 P3 8 When using airflow block the airflow block will be routinely lifted become horizontal during heating operation No defect Set louver to horizontal P0 during thermostat OFF 9 The infrared presen...

Page 238: ...Taking corrective action Operation Status Display Abnormal shutdown The system stops operating The operation lamp green starts to blink The message Error Push Menu button will blink at the bottom of...

Page 239: ...of the remote controller starts to beep 3 short beeps Follow all steps below 1 short beep Follow steps 3 and 4 Continue the operation in step 4 until you hear a continuous beep This continuous beep in...

Page 240: ...oller automatically returns to the normal mode O0 A C E H F J L P U 9 8 7 6 5 4 UP button DOWN button 0 1 2 3 4 5 6 7 8 9 A H C J E F UP button DOWN button If no button is pressed for 1 minute equipme...

Page 241: ...l Indoor heat exchanger liquid pipe thermistor abnormality 287 C5 l Indoor heat exchanger gas pipe thermistor abnormality 287 C6 l Combination error between indoor unit control PCB and fan PCB 288 Blo...

Page 242: ...333 P1 l Power supply voltage imbalance 335 P4 1 l Inverter radiation fin temperature abnormality 337 PJ l Field setting abnormality after replacing outdoor unit main PCB or combination of PCB abnorm...

Page 243: ...ctions of the connector X12A on the panel PCB and the connectors X18A and X19A on the sensor PCB AH 05 Dust collection sign error when the self cleaning decoration panel is mounted Check for clogging...

Page 244: ...ster E2 07 Missing of ground leakage detection core Sub E3 01 Activation of high pressure switch S1PH Master Refer to the E3 flowchart and make a diagnosis of the relevant unit based on the Error code...

Page 245: ...n valve coil Y3E Master E9 24 Defective electronic expansion valve coil Y3E Sub E9 26 Electronic expansion valve coil Y4E error Master E9 27 Electronic expansion valve coil Y4E error Sub E9 29 Electro...

Page 246: ...to the left J3 17 Defective M1C discharge pipe thermistor R13T Short Master In case of RXYQ72 type R15T J3 18 Defective M2C discharge pipe thermistor R15T Open Master J3 19 Defective M2C discharge pi...

Page 247: ...to the J8 flowchart and make a diagnosis of the relevant thermistor of the relevant unit based on the Error code shown to the left J8 02 Defective heat exchanger liquid pipe thermistor R2T Sub J8 08...

Page 248: ...ective inverter PCB EEPROM Compressor M2C Sub L1 47 15 V power supply error Compressor M1C Master L1 48 15 V power supply error Compressor M2C Master L1 49 15 V power supply error Compressor M1C Sub L...

Page 249: ...r Between outdoor units sub PCB Master LC 34 Transmission error Between outdoor units sub PCB Sub P1 01 Inverter 1 power supply unbalanced voltage Master Refer to the P1 flowchart and make a diagnosis...

Page 250: ...U2 10 Defective capacitor in inverter 1 main circuit Sub U2 22 Shortage of inverter 2 power supply voltage Master U2 23 Open phase of inverter 2 power supply Master U2 24 Defective capacitor in inver...

Page 251: ...unit based on the Error code shown to the left UA 18 Connection of wrong models of indoor units UA 20 Improper combination of outdoor units UA 21 Connection error UA 31 Multi unit combination error U...

Page 252: ...ilure prediction Ta Ta sensor failure Refer to H9 troubleshooting 16D _ _ 1 6 0 4 Heat exchanger deicer thermistor failure prediction Tb1 Tb sensor failure Refer to J6 troubleshooting 16E _ _ 1 6 0 5...

Page 253: ...Refer to JA troubleshooting If the above error is not seen refrigerant shortage or leakage from the system can be considered 43B _ _ 4 3 0 2 0 0 Refrigerant shortage and refrigerant leakage predictio...

Page 254: ...xcept for the above shall be the numbers which indicate indoor unit type for the tens digit and capacity index for the ones digit See Table 1 and 2 for detail Detail of error Type of error Product typ...

Page 255: ...digit Prediction code Prediction sub code AirNet address display flag Prediction code detail information Product type digit Prediction code Prediction sub code AirNet address display flag Product type...

Page 256: ...sed Causes Activation of external protection device Improper field setting Defective indoor unit control PCB Troubleshooting ON OFF input from outdoor mode No 12 first code No 1 has been set to extern...

Page 257: ...lown 24 VAC power is not supplied to TH2 and TR2 terminals FXTQ TA or R and C terminals CXTQ TA on the indoor unit PCB Troubleshooting Fuse F1U is blown 24 VAC power is supplied to TH2 and TR2 termina...

Page 258: ...volatile memory Maintains memory contents even when the power supply is turned OFF Supposed Causes Defective indoor unit control PCB External factor Noise etc Troubleshooting Turn the power supply OFF...

Page 259: ...ng connectors or parts may be damaged Replace the float switch S1L Modify the float switch s connection and turn ON again Connect the drain pump and turn ON again Connect either a short circuit connec...

Page 260: ...wer supply is reset for the indoor unit The voltage of drain pump terminals 2 is in accordance to the criteria 3 within 5 minutes of resetting the power supply A Model 1 Float switch S1L short circuit...

Page 261: ...in short circuit of or disconnection of connectors from the fan motor harness Defective fan motor Broken wires or defective insulation Abnormal signal output from the fan motor defective circuit Defec...

Page 262: ...the fan YES Is the resistance between the pins more than the judgment criteria Disconnect the connector from the fan motor and then make measurement of resistance between pins Turn OFF the power supp...

Page 263: ...o the fan Supposed Causes Defective indoor fan motor Broken wires Defective contact Troubleshooting CHECK 16 Refer to page 386 NO YES YES Is the X4A connector securely connected NO Is the power of 12...

Page 264: ...ion Error from the position signal of the fan motor Error from the current flow on the fan PCB when the fan motor starting operation Error Decision Conditions An overcurrent flows The rotation speed i...

Page 265: ...place the indoor fan motor M1F YES NO YES The fan can be moved lightly by hand after the fan motor connector of the fan PCB A2P is removed Replace the indoor fan motor M1F NO YES NO YES There is a for...

Page 266: ...ween GND and Hw Hv or Hu terminals are short circuited Replace the indoor fan motor M1F YES Replace the fan PCB A2P YES NO The resistance among U V and W are unbalanced or short circuited NO The HAP l...

Page 267: ...upposed Causes Defective power supply for the indoor fan motor Clogged drain piping Activation of the indoor unit safety device Defective contact in the fan wiring circuit Troubleshooting Properly con...

Page 268: ...second intervals using the feedback of the fan motor Performs rotation sampling 720 times takes approximately one hour and if the rotation speed falls below 50 rpm over 100 times it is deemed abnorma...

Page 269: ...information shows Motor Lost Control or Current Trip status it will be deemed a MOTOR TRIP abnormal operation The system stops operating Error Reset Conditions If the indoor unit stops receiving abno...

Page 270: ...If during this the rotation command is stopped the 5 second interval check is halted but the counted number will be kept When the rotation command is restarted the checks will resume Error Reset Cond...

Page 271: ...ipped with a swing flap function The swing motor works when the power supply is turned OFF and then restart The relay cable is short circuited or disconnected Caution Be sure to turn off the power swi...

Page 272: ...S FXAQ P X36A M1S Replace the power supply relay cable Replace the defective swing motor 2 Take the flap cam mechanism apart reassemble and turn ON again YES NO YES NO The relay cable has no continuit...

Page 273: ...ine Defective wiring Instantaneous power failure others Troubleshooting Check the condition of the power supply 1 Check if power supply voltage is 208 230 V 10 2 Check if there is power open phase or...

Page 274: ...abnormality Error Decision Conditions If the information shows Over Under Voltage status it will be deemed a MOTOR VOLTS abnormal operation Error Reset Conditions Reset by remote controller Supposed C...

Page 275: ...ture of liquid pipe of heat exchanger Supposed Causes Defective electronic expansion valve coil Defective indoor unit control PCB Defective relay cables Troubleshooting CHECK 18 Refer to page 390 NO Y...

Page 276: ...error code of the gas furnace Refer to the gas furnace manual for details Troubleshooting 1 In some cases of gas furnace abnormality regarding gas combustion once an error occurs display indication o...

Page 277: ...e the compressor is not in operation Error code is displayed but the system operates continuously Supposed Causes Humidifier unit optional accessory leaking Defective drain pipe upward slope etc Defec...

Page 278: ...receiving side is short circuited The total of fan operation time exceeds a specified value after dust collection sign display Limit switch does not detect when air filter rotates or air filter does...

Page 279: ...the dust box NO NO Go to Diagnosis Flowchart 4 Air filter rotation error AH 06 Is the rotation of air filter normal YES NO Go to Diagnosis Flowchart 5 Damper rotation error AH 07 Does the damper open...

Page 280: ...AH 03 Transmission error between self cleaning decoration panel and indoor unit Diagnosis Flowchart 1 NO Properly connect the connector Is the connector X1A on the self cleaning decoration panel PCB p...

Page 281: ...eaning decoration panel PCB AH 04 Dust detection sensor error Diagnosis Flowchart 2 NO Properly connect the connector Is the connector X12A on the self cleaning decoration panel PCB properly connected...

Page 282: ...lace the harness YES Remove the external factor Is there any external factor other than the error such as noise NO Turn OFF the power supply and then turn it ON again Then start operation with remote...

Page 283: ...tter Is there any foreign matter in the filter drive motor or drive parts NO YES Replace the air filter Is the filter damaged NO YES Replace the filter drive gear Is the filter drive gear damaged NO A...

Page 284: ...est operation refer to the operation manual of the self cleaning decoration panel YES NO Normal Error AH recurs or the self cleaning decoration panel lamp red blinks The error could be caused by other...

Page 285: ...the foreign matter Is there any foreign matter in the damper drive motor or drive parts NO YES Replace the damper or damper drive gear Is the damper or damper drive gear damaged NO A Go to the next p...

Page 286: ...est operation refer to the operation manual of the self cleaning decoration panel YES NO Normal Error AH recurs or the self cleaning decoration panel lamp red blinks The error could be caused by other...

Page 287: ...AH 08 Filter auto clean operation error Diagnosis Flowchart 6 NO YES Remove the external factor Is there any external factor other than the error such as noise Turn OFF the power supply and then turn...

Page 288: ...Stop the air conditioning operation and perform filter auto clean operation 1 Please set a time period during which air conditioning operation is stopped for about 20 minutes every day Has any air co...

Page 289: ...he capacity code is not saved to the PCB and the capacity setting adaptor is not connected When a capacity that does not exist for that unit is set Supposed Causes The capacity setting adaptor was not...

Page 290: ...tion Transmission conditions between the indoor unit control PCB A1P and fan PCB A2P are checked via microcomputer Error Decision Conditions When normal transmission is not carried out for a certain d...

Page 291: ...nd connect X70A back to original condition Under above field setting mode second code No is 01 NO NO YES Replace the fan PCB A2P YES YES Is the connector between indoor unit control PCB A1P and fan PC...

Page 292: ...rmal message and determined as such by the indoor unit the indoor unit will execute a retry If everything fails for 5 seconds it is deemed to be a transmission abnormality Error Reset Conditions If th...

Page 293: ...osed Causes Disconnection of the communication wire between the CXTQ TA and the gas furnace Power supply to the gas furnace is cut Troubleshooting NO Caution Be sure to turn off the power switch befor...

Page 294: ...291 for C9 for FXTQ TA and CXTQ TA models CHECK 11 Refer to page 381 Is the thermistor normal Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be...

Page 295: ...on of capacity setting adaptor Field setting error Troubleshooting NO Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Was indoor unit...

Page 296: ...rmation on the manufacturer ID and output of the fan motor when initializing the fan motor If those figures are not the values recognized by the indoor unit it will be deemed abnormal operation If dee...

Page 297: ...e included among the periodic control status information Error is issued when the information shows abnormality Error Decision Conditions If the parameter information shows abnormality it will be deem...

Page 298: ...Troubleshooting 1 Connector and indoor unit control PCB CHECK 11 Refer to page 381 Is the optional remote sensor is installed Field setting 10 20 2 is set to 03 Connector is connected to the indoor u...

Page 299: ...y be damaged YES NO Is CC displayed on the remote controller 2 YES NO Does it function normally Remove the humidity sensor from the indoor unit control PCB and insert it again Normal Poor connector co...

Page 300: ...ence sensor connector CE 01 Defective infrared floor sensor Temperature compensation circuit disconnection CE 02 Defective infrared floor sensor Temperature compensation short circuit CE 03 Defective...

Page 301: ...ress data No 22 25 Connect the connector correctly Connect the connector correctly NO YES YES Is the connection of the connector on infrared presence sensor PCB and the connector 1 normal NO YES YES I...

Page 302: ...address data No 26 Connect the connector correctly Connect the connector correctly NO YES YES Is the connection of the connector on infrared floor sensor PCB and the connector 1 normal NO YES YES Is t...

Page 303: ...output refer to sensor and address data No 26 Is the connection of the sensor connector normal Displays by the above verification method Displays CE 03 again or for sensor and address data Replace th...

Page 304: ...output refer to sensor and address data No 26 Is the connection of the sensor connector normal Displays by the above verification method Displays CE 04 again or for sensor and address data Replace th...

Page 305: ...roubleshooting 1 How to delete the history of error codes Press the ON OFF button for 4 seconds and more while the error code is displayed in the inspection mode Clear the error code history 1 While i...

Page 306: ...mal Supposed Causes Defective outdoor unit main PCB A1P Defective outdoor unit sub PCB A8P Defective connection communication line between indoor and outdoor units Troubleshooting Return to normal YES...

Page 307: ...ting YES NO NO Is wiring passing through the current sensor T1A proper Insulation failure of compressor Insulation failure of component except compressor Pass proper wiring through the sensor Turn OFF...

Page 308: ...connector X101A Wiring disconnection Defective outdoor unit main PCB Troubleshooting NO YES YES Is the system reset to normal Is X101A connected The error is considered to have resulted from external...

Page 309: ...nit main PCB A1P Momentary power failure Defective high pressure sensor Troubleshooting NO YES YES Replace the high pressure switch S1PH S2PH Remedy defective points YES Are the above 3 points OK Does...

Page 310: ...tors that cause the high pressure to rise Connect the service checker and then compare the high pressure value measured by the service checker with the voltage measurement of the connector of the pres...

Page 311: ...and then restart the operation Is the stop valve open Open the stop valve Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Replace the...

Page 312: ...fferential pressure 0 5 MPa 72 5 psi or more UVW connection error Defective inverter PCB Stop valve is not opened Troubleshooting Make proper wire connections Make proper wire connections NO NO NO NO...

Page 313: ...lure Check for the refrigerant system Quit work Pressure equalization failure may have occurred Check for the refrigerant system YES YES NO Replace the inverter PCB NO The error recurs at startup Cont...

Page 314: ...ystem will return an alarm if there is any operational unit other than that applicable to E6 or determine to be error if not Supposed Causes Defective compressor Defective high pressure sensor Defecti...

Page 315: ...6 CHECK 12 Refer to page 384 NO YES Are the high pressure and ow pressure checked by the service checker the same as the actual measured values of the high and low pressure sensors Replace the outdoor...

Page 316: ...ting There are foreign matter around the applicable fan Remove the foreign matter YES Check for the connections of all fan motor connectors NO Turn OFF the power supply and then wait for a period of 1...

Page 317: ...lic part is less than 1 M Replace the relevant fan motor M1F M2F YES NO YES Resistance between U V W phases of the fan motor power supply cable has lost balance or short circuit is caused between U V...

Page 318: ...Turn OFF the power supply once and then turn it ON again Return to normal Investigate external causes other than failures e g noise YES NO Connector for the electronic expansion valve of the outdoor u...

Page 319: ...abnormally high i e 135 C 275 F or more When discharge pipe temperature sharply rises remains at 120 C 248 F or more for a period of consecutive 10 minutes When compressor surface temperature becomes...

Page 320: ...sor surface temperature thermistors normal All thermistors are normal and temperature detection with the outdoor unit main PCB is also normal The discharge pipe temperature or compressor surface tempe...

Page 321: ...rt Error Decision Conditions When the following wet state continues for a period of 90 minutes an alert is issued An error is defined for 120 minutes Wet state in outdoor units When the following wet...

Page 322: ...O YES NO Replace the indoor unit electronic expansion valve Replace the relevant thermistor YES YES Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts...

Page 323: ...uses Refrigerant overcharged Disconnection of outdoor air thermistor Disconnection of heat exchanger deicer thermistor Disconnection of liquid pipe temperature thermistor Troubleshooting CHECK 11 Refe...

Page 324: ...rcuit in it Supposed Causes Defective connection of thermistor Defective thermistor Defective outdoor unit PCB Troubleshooting 1 Check the error code and sub code and replace the corresponding thermis...

Page 325: ...the PCBs is disabled while the compressor is not running Supposed Causes Defective connection of jumpers between PCB Defective outdoor unit main PCB A1P Defective inverter PCB Troubleshooting Check fo...

Page 326: ...r NO YES Replace the relevant fan motor M1F M2F NO YES Check for fan PCB applicable to the error code H7 while in monitor mode H7 21 23 Fan PCB M1F Master Sub H7 22 24 Fan PCB M2F Master Sub Replace t...

Page 327: ...12 Refer to page 384 Are the characteristics of the high pressure sensor normal Make a comparison between voltage characteristics and gauge pressure Replace the high pressure sensor S1NPH Replace the...

Page 328: ...Refer to page 384 Check 12 Are the characteristics of the low pressure sensor normal Make a comparison between voltage characteristics and gauge pressure Replace the low pressure sensor S1NPL Replace...

Page 329: ...value during the output of waveform before compressor startup Detect current value with the current sensor during synchronous operation for startup Error Decision Conditions When the overcurrent flows...

Page 330: ...sor 100 k or more The error could have resulted from external factors other than failures e g external noise or thunder YES Replace the compressor and the inverter PCB together Replace the inverter PC...

Page 331: ...ode L4 Sub code 01 02 09 10 Method of Error Detection Detect temperature of power module of the inverter PCB Error Decision Conditions Thermistor located inside the power module of the inverter PCB fo...

Page 332: ...ower supply voltage falls within 10 of the rated voltage Replace the inverter PCB Connect to power supply within 10 of the rated voltage NO YES Rectify troubles Normal Power OFF NO NO Check for the co...

Page 333: ...n plate not fixed with screws U0 error Defective fan PCB High outdoor air temperature Troubleshooting Continue operation Field factor Radiation fin temperature may have risen due to high outdoor air t...

Page 334: ...ive inverter PCB Troubleshooting Power OFF Open the stop valve YES NO Is the stop valve open YES YES Are wiring and wire connections to the relevant compressor normal Rectify the wiring and wire conne...

Page 335: ...r OFF YES Restarting the system results in the recurrence of the error Continue operation Replace the compressor NO YES Replace the inverter PCB YES Restarting the system results in the recurrence of...

Page 336: ...oltage Troubleshooting Power OFF Open the stop valve YES NO Is the stop valve open YES YES Are wiring and wire connections to the relevant compressor normal Rectify the wiring and wire connections NO...

Page 337: ...compressor restart is below 0 2 MPa Continue operation Replace the compressor Connect to power supply within 10 of the rated voltage NO NO Pressure equalization failure Check the refrigerant system Po...

Page 338: ...oting YES NO NO Apply power and then restart operation NO Are the leads of the compressor disconnected Connect the leads of the compressor YES Is the insulation resistance of the relevant compressor 1...

Page 339: ...ant system NO Replace the inverter PCB NO YES NO The internal wiring of the compressor coil is defective Replace the compressor YES Is the insulation resistance of the relevant compressor 100 k or mor...

Page 340: ...ve outdoor unit main PCB transmission block Defective noise filter compressor or fan motor External factors e g noise Failure of inverter PCB or fan PCB Troubleshooting Does the inverter PCB part No m...

Page 341: ...eplace the inverter PCB NO NO YES The microcomputer normal monitor indication lamp green on the outdoor unit main PCB A1P is blinking Properly connect the connector NO YES Is the connector between the...

Page 342: ...ance through inverter PCB Error Decision Conditions When power supply voltage imbalance exceeds approximately 12 V Error is not decided while the unit operation is continued P1 will be displayed by pr...

Page 343: ...on Results attached to spare part Hand the Notice of Inspection Results to user to ask him her to rectify the imbalance Be sure to explain user that power supply voltage imbalance will occur and Daiki...

Page 344: ...unit operation is continued P4 will be displayed by pressing the inspection button Supposed Causes Defective radiation fin temperature thermistor Defective inverter PCB Defective compressor Defective...

Page 345: ...nce of the thermistor comes to a value equivalent to open or short circuit Supposed Causes Defective fan PCB Defective fan motor Troubleshooting The insulation resistance of the relevant fan motor is...

Page 346: ...eld setting after replacing outdoor unit main PCB Troubleshooting Does the inverter PCB part No match that of the spare parts list Does the fan PCB part No match that of the spare parts list Has the D...

Page 347: ...to page 372 CHECK 12 Refer to page 384 Is the low pressure 0 1 MPa 14 5 psi or less 1 Is the characteristics of low pressure sensor normal 2 Replace the low pressure sensor S1NPL Replace the outdoor u...

Page 348: ...pen phase Defective outdoor unit main PCB A1P Power supply frequency issue Troubleshooting There is an open phase at the power supply T phase terminal section X1M of the outdoor unit Operation is norm...

Page 349: ...phase Defective inverter PCB Defective outdoor unit main PCB Defective compressor Defective main circuit wiring Defective fan motor Defective connection of signal cable Troubleshooting There are some...

Page 350: ...ace the inverter PCB If the inverter PCB gets severely damaged the compressor and the fan motor M1F M2F may have been damaged Replace the inverter PCB If the inverter PCB gets severely damaged check f...

Page 351: ...b code and then go to the following Conduct the test operation The test operation has not been conducted U3 03 Check for the refrigerant piping and then conduct the test operation U3 04 Conduct the te...

Page 352: ...icrocomputer checks if transmission between indoor and outdoor units is normal Error Decision Conditions Transmission is not carried out normally for a certain amount of time Supposed Causes Open phas...

Page 353: ...N BLINK SEG1 SEG2 SEG3 1 2 Correct the voltage Replace the fuse Press and hold the RETURN BS3 button on the outdoor unit main PCB for a period of 5 seconds or more YES NO YES YES Replace the indoor un...

Page 354: ...ve PCB 2 Test operation was interrupted by the MODE BS1 button YES Check all indoor error indication NO Operate all indoor units YES Do all units display U9 Carry out the diagnosis again after a lapse...

Page 355: ...ain Sub setting Control by 2 remote controllers Main Sub setting of both remote controllers is set to Main All indoor unit control PCB microcomputer normal monitors blinking Resets normally when power...

Page 356: ...ditions When transmission is not carried out normally for a certain amount of time Supposed Causes Connection error of transmission wirings between outdoor unit and external control adaptor for outdoo...

Page 357: ...2 Transmission error when the external control adaptor is mounted Error code Sub code Error code Sub code Error code Sub code Error code Sub code Error code Sub code Error code Sub code Error code Su...

Page 358: ...tdoor unit Diagnosis Flowchart 1 Supply power to the outdoor unit Is power supplied to the outdoor unit Is the normal operation monitor LED on the outdoor unit main PCB blinking Is the normal operatio...

Page 359: ...e error recur when setting Cool Heat selection for the external control adaptor for outdoor unit to IND NO NO NO NO NO NO NO NO YES YES YES YES YES YES YES YES Replace the outdoor unit main PCB A1P Re...

Page 360: ...and Sub units Error code Sub code U7 03 Disconnect the outdoor unit multi transmission wirings and then reset the power supply Replace the outdoor unit main PCB A1P YES NO Diagnosis Flowchart 4 Multi...

Page 361: ...ings and then reset the power supply Replace the outdoor unit main PCB A1P Replace the outdoor unit main PCB A1P Rectify the error in the connection of transmission wirings and then reset the power su...

Page 362: ...ror between main and sub remote controller Connection between sub remote controllers Defective remote controller PCB Troubleshooting Refer to page 81 for Main Sub setting Main Sub setting of both remo...

Page 363: ...its Defective electronic expansion valve of other indoor unit Defective indoor unit control PCB of other indoor unit Improper connection of transmission wiring between indoor and outdoor unit Multi te...

Page 364: ...fective outdoor unit main PCB Mismatch of the refrigerant type of indoor and outdoor unit Setting of outdoor unit main PCB was not carried out after replacing to spare PCB Troubleshooting Ensure the s...

Page 365: ...the outdoor unit main PCB A1P Diagnosis Flowchart 3 Error code Sub code UA 20 Multi connection NO YES YES The number of indoor units connected to the same system is less than 64 Incorrect electric hea...

Page 366: ...units Replace the outdoor unit main PCB A1P Diagnosis Flowchart 5 Diagnosis Flowchart 4 Is the multi combination of outdoor units proper NO Was the outdoor unit main PCB replaced with a spare PCB Rep...

Page 367: ...nace and other indoor units other than CXTQ TA are connected Error Decision Conditions Check that two or more CXTQ TA gas furnace and other indoor units other than CXTQ TA are not connected Operation...

Page 368: ...n applicable value Operation After Error Codes Decided The error code UA 17 is displayed on the remote controller Indoor units can operate continuously Incorrect setting is kept Even if the ON conditi...

Page 369: ...that of its own on any other indoor unit Error Decision Conditions The error decision is made as soon as the abnormality aforementioned is detected Supposed Causes Address duplication of centralized c...

Page 370: ...rocomputer checks if transmission between indoor unit and centralized controller is normal Error Decision Conditions When transmission is not carried out normally for a certain amount of time Supposed...

Page 371: ...o for indoor unit changed Make correct setting of the central control group No Check outdoor units to which the refrigerant system is connected Check whether or not there are no problems with the tran...

Page 372: ...Replace the centralized controller Centralized controller Normal OK Correct the wiring NG A NO Correct the wiring NG YES YES Disconnect the transmission wiring of the main centralized controller and...

Page 373: ...mission wiring between indoor outdoor units and outdoor outdoor units Failure to execute check operation Defective indoor unit PCB Stop valve is not opened Troubleshooting Is indoor outdoor and outdoo...

Page 374: ...s function Automatic address refers to the automatic designated address of indoor unit and outdoor unit when connected to the power after installation or wiring replacement with the RETURN BS3 button...

Page 375: ...or units in the system NO After fixing the incorrect wiring press the RETURN BS3 button on the outdoor unit main PCB for 5 seconds The unit will not run for up to 12 minutes NO NO Install the DIII NET...

Page 376: ...f the gas furnace is turned ON after a certain period of time has been elapsed after the power of the CXTQ TA was turned ON Disconnection of the communication wire between the CXTQ TA and the gas furn...

Page 377: ...r communication with the gas furnace completes and after elapsing 4 minutes after the power is turned ON Two or more gas furnaces are detected Any unit other than the gas furnace is detected Supposed...

Page 378: ...unit Degradation incondensing capacity Dirty condenser Mixingofnon condensablegas Decreased airflow rate Decreased fan output Defective fan motor Defective outdoor unit main PCB Including capacity se...

Page 379: ...y setting properly made Is the air filter clogged Is there any obstacle in the airflow passage Defective outdoor unit main PCB Including capacity setting High airflow passage resistance Dirty filter O...

Page 380: ...Check SiUS342303E 373 Part 6 Service Diagnosis Reference Reference CHECK 7 Refer to page 379 CHECK 8 Refer to page 380...

Page 381: ...the outdoor unit electronic expansion valve excessively throttled 3 Temperature increase of discharge pipe Defective injection electronic expansion valve Are the coil resistance and insulation normal...

Page 382: ...superheat operation 1 Suction gas superheating degree 10 C 18 F and over 2 Discharge gas superheating degree 45 C 81 F and over except immediately after compressor starts up or is running under droppi...

Page 383: ...or more make measurement of resistance No Measuring point When using the analog type of multimeter make measurement in resistance measurement mode in the x1 k range When using the digital type of mult...

Page 384: ...6 Service Diagnosis RXYQ72AATJ RXYQ144 168AATJ M2C RXYQ192 216 240AATJ M1C M2C RXYQ AAYD 9 5 9 5 36 3 3 5 8 5 3 3 1 3 8 9 9 7 7 7 1 W V U P2 N32 230 V 160P 9 5 9 5 36 3 3 5 8 5 3 3 1 3 8 9 9 7 7 7 1...

Page 385: ...e Low pressure Frequency High pressure gradually rises with increase in frequency Subcooling degree becomes higher Liquid connection pipe temperature lowers Low pressure rises due to decreased compres...

Page 386: ...minimum level Fan control is activated for high pressure protection under cooling control at low outdoor air temperature i e the fan is hunting at high pressure High pressure drops with decrease in c...

Page 387: ...r less for a period of 1 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 in the system or refrigerant leakage may hav...

Page 388: ...eat exchanger liquid pipe thermistor Type A R3T Heat exchanger deicer thermistor R4T Electrical box air outlet thermistor R5T Suction pipe before accumulator thermistor R6T Subcooling gas pipe thermis...

Page 389: ...53 65 80 5 41 51 05 50 95 51 07 10 50 39 91 39 92 39 97 15 59 31 44 31 50 31 51 20 68 24 95 25 02 25 02 25 77 19 94 20 00 20 00 30 86 16 04 16 10 16 10 35 95 12 99 13 04 13 04 40 104 10 58 10 63 10 6...

Page 390: ...20 14 20 00 30 86 165 7 16 23 16 09 35 95 134 3 13 16 13 02 40 104 109 4 10 73 10 60 45 113 89 58 8 800 8 685 50 122 73 73 7 255 7 153 55 131 60 98 6 012 5 923 60 140 50 67 5 010 4 929 65 149 42 29 4...

Page 391: ...kg cm2 psi MPa PH PL PH MPa VH 0 5 PL MPa VL 0 5 PH High pressure MPa PL Low pressure MPa VH Output Voltage High Side VDC VL Output Voltage Low Side VDC 4 15 3 0 4 15 3 0 1 7 3 0 1 7 3 0 1 MPa 145 psi...

Page 392: ...D between the outdoor outdoor unit terminal of the Outdoor Unit C in the order described thus identifying the place with continuity If the place with continuity can be identified there may be broken...

Page 393: ...isconnected 1 Short circuit between the outdoor outdoor unit terminal parts Outdoor outdoor unit transmission wiring 2 Check the transmission wiring for continuity If there is continuity the indoor ou...

Page 394: ...FXMQ30 54TB Remove the X1A connector from the fan PCB A2P and measure the resistance between the U and V V and W and W and U phases of the motor connector with five conductors and check that each phas...

Page 395: ...XZQ TB FXSQ05 48TB FXMQ07 12PB FXMQ15 24TB FXAQ P FXEQ P FXUQ PA White Orange Brown Blue Red 1 2 3 4 5 6 7 FG Vsp Vcc GND Vdc Measuring points Judgment criteria 1 4 1 or more 2 4 1 or more 3 4 1 or mo...

Page 396: ...303E 389 Part 6 Service Diagnosis FXSQ54TB FXMQ15 54PB FXMQ30 54TB Gray 5 Pink 4 Orange 3 Blue 2 Yellow 1 GND Vcc Hw HV HU Measuring points Judgment criteria 5 4 1 or more 5 3 1 or more 5 2 1 or more...

Page 397: ...ange listed in the table below Determine the type according to the connector wire color and measure the resistance Outdoor Unit Y1E Y3E RXYQ72AA Y6E Y2E Y3E RXYQ96 240AA Y4E Y5E Measuring points Judgm...

Page 398: ...HQ M FXLQ M FXNQ M FXMQ MF Measuring points Judgment criteria 1 6 35 55 2 6 3 6 4 6 Measuring points Judgment criteria 1 3 300 1 5 150 2 4 300 2 6 150 Measuring points Judgment criteria 1 3 300 1 5 15...

Page 399: ...or replace as needed 4 Check blower wheel Confirm wheel is properly seated on motor shaft Set screw must be on shaft flat and torqued to 165 in lbs minimum Confirm wheel has no broken or loose blades...

Page 400: ...e motor control end bell verify motor refer to Motor Checks on page 395 9 Depress the orange power button to turn off motor 10 Disconnect power Disconnect diagnostic tool 11 Reconnect the 4 wire harne...

Page 401: ...o air handler or modular blower NOTE Motor contains capacitors that can hold a charge for several minutes after disconnecting power Wait 5 minutes after removing power to allow capacitors to discharge...

Page 402: ...or modular blower 1 Disconnect power to air handler or modular blower NOTE Motor contains capacitors that can hold a charge for several minutes after disconnecting power Wait 5 minutes after removing...

Page 403: ...SiUS342303E Part 7 Appendix 396 1 Wiring Diagrams 397 1 1 Outdoor Unit 397 1 2 Indoor Unit 399 1 3 Air Treatment Equipment 415 2 Electrical Component Box Removal 418 Part 7 Appendix...

Page 404: ...Wiring Diagrams SiUS342303E 397 Part 7 Appendix 1 Wiring Diagrams 1 1 Outdoor Unit RXYQ72 96 120 144 168 192 216 240AATJA C 2D140756B...

Page 405: ...SiUS342303E Wiring Diagrams Part 7 Appendix 398 RXYQ72 96 120 144 168 192 216 240AAYDA C 2D140769B...

Page 406: ...Wiring Diagrams SiUS342303E 399 Part 7 Appendix 1 2 Indoor Unit FXFQ07 09 12 15 18 24 30 36 48TVJU 3D086460B...

Page 407: ...SiUS342303E Wiring Diagrams Part 7 Appendix 400 BYCQ125BGW1 Self Cleaning Decoration Panel for FXFQ TVJU 3D076375A...

Page 408: ...25 7 237 21 6625 3 3 1 75 160 66 21 5 1 127 175 5 027 21752 5 1387 520 2876 127 5 5 027 21752 5 237 21 6625 127 0 0 3 21752 2 06 0 7 5 25 8 51 1 127 6 7 50 1 2 211 725 5 1 3527 7 9 5281 6 5 1 6 86 1 1...

Page 409: ...0 7 50 1 2 21752 5 6 1 03 55 7 25 5 7 5 7 8 3 06 02725 1 225 1 7 50 6725 5 127 3 35 17 5 8 7 2 5 7 7 50 1 2 32 5 6833 02725 5 1 3803 3 0 6 7 0 6 0 6 8 5 7 06 32 5 6833 9 7 50 6725 2 5 5 027 21752 5 23...

Page 410: ...Wiring Diagrams SiUS342303E 403 Part 7 Appendix FXEQ07 09 12 15 18 24PVJU 3D098557A...

Page 411: ...SiUS342303E Wiring Diagrams Part 7 Appendix 404 FXDQ07 09 12 18 24MVJU C 3D050501C...

Page 412: ...8 77 72 5 027 21752 5 2 256 5 5 8 8 7 7 2 25 25 1 51 5 1 51 52 1 5 5 31 3 1 127 6 7 50 1 2 211 725 5 1 3527 7 9 5281 6 5 12 6 66 5281 1 6 86 1 175 5 027 21752 5 211 7 7 72 7 81 7 1 25 1 7 7 77 167 7 2...

Page 413: ...SiUS342303E Wiring Diagrams Part 7 Appendix 406 FXMQ07 09 12 15 18 24 30 36 48 54PBVJU 3D093209B...

Page 414: ...2 5 027 21752 5 2 256 5 5 8 8 7 7 2 25 25 1 51 5 1 51 52 1 5 5 31 3 1 127 6 7 50 1 2 211 725 5 1 3527 7 9 5281 6 5 12 6 66 5281 1 6 86 1 175 5 027 21752 5 211 7 7 72 7 81 7 1 25 1 7 7 77 167 7 21 0 18...

Page 415: ...INAL 2 FIELD WIRING 3 IN CASE USING CENTRAL REMOTE CONTROLLER CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTALLATION MANUAL 4 WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE FORCED OFF OR ON...

Page 416: ...Wiring Diagrams SiUS342303E 409 Part 7 Appendix FXHQ12 24 36MVJU 3D048116C...

Page 417: ...SiUS342303E Wiring Diagrams Part 7 Appendix 410 FXAQ07 09 12 18 24PVJU 3D075354F...

Page 418: ...NNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTALLATION MANUAL 4 WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE FORCED OFF OR ON OFF CONTROL OPERATION CAN BE SELECTED BY REMOTE CONTROLLER IN D...

Page 419: ...GH VOLTAGE FIELD JUNCTION TERMINAL PLUG CONNECTION EQUIPMENT GND FIELD GROUND X1A X3A X38A BS1 X12A X13A HAP X8A INDOOR UNIT PCB THERMISTOR HEAT EXCHANGER 1 2 MPU MULTI TENANT OPTION EEV COIL M K1R K3...

Page 420: ...CTION TERMINAL PLUG CONNECTION EQUIPMENT GND FIELD GROUND X3A X38A BS1 X12A X13A HAP X8A INDOOR UNIT PCB THERMISTOR HEAT EXCHANGER 1 2 MPU EEV COIL M K3R TB6 TB8 LEARN PS TB5 TB4 ACC OUT RELAY OUT FLA...

Page 421: ...30V AC Error output max 0 3A 230V AC X30A P2 M SS1 SS1 P1 S V2C N 2 P2 X2M P2 F2 X2M USER INTERFACE S A5P V1C N 1 P1 P1 A2P REMOTE USER INTERFACE F1 M F1F2 COMMUNICATION SEE OUTDOOR UNIT FOR MORE DETA...

Page 422: ...Wiring Diagrams SiUS342303E 415 Part 7 Appendix 1 3 Air Treatment Equipment 1 3 1 Outdoor Air Processing Unit FXMQ48 72 96MFVJU 3D065426D...

Page 423: ...SiUS342303E Wiring Diagrams Part 7 Appendix 416 1 3 2 Energy Recovery Ventilator VAM Series VAM300 470 600GVJU 3D073269D...

Page 424: ...Wiring Diagrams SiUS342303E 417 Part 7 Appendix VAM1200GVJU 3D073270D...

Page 425: ...SiUS342303E Electrical Component Box Removal Part 7 Appendix 418 2 Electrical Component Box Removal 1 Remove the screws 2 Lift the mounting plate up and fasten the hook Screw 3...

Page 426: ...Electrical Component Box Removal SiUS342303E 419 Part 7 Appendix 3 Remove the screws Screw 5 Screw 3 2 compressor Type 1 compressor Type...

Page 427: ...3E Electrical Component Box Removal Part 7 Appendix 420 4 Pull out the refrigerant jacket Axis of rotation max 110 Do not open more than 110 The piping might crack when coming in contact with surround...

Page 428: ...Electrical Component Box Removal SiUS342303E 421 Part 7 Appendix 5 Remove the screws 6 Remove the electrical component box Screw 8...

Page 429: ...local legislation z Ask a qualified installer or contractor to install this product Do not try to install the product yourself Improper installation can result in water or refrigerant leakage electri...

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