Daikin RXYQ-TA Series Service Manual Download

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SiUS341615E

Refrigerant Flow for Each Operation Mode

Refrigerant Circuit

3.2.3 Heating Oil Return, Defrost Operation

Fan

Indoor unit operation

Fan OFF

Thermostat OFF

Indoor unit

Electronic expansion valve

EV: 0 pulse

Filter

Heat exchanger

Fan OFF

Indoor unit

OFF

Electronic expansion valve

EV: 0 pulse

Filter

Heat exchanger

Fan OFF

Thermostat ON

Indoor unit

Heat exchanger

Electronic expansion valve

Filter

Fan

C: 3D085598A

High temperature, high pressure, gas

High temperature, high pressure, liquid

Low temperature, low pressure

EV: Normal

control

Stop valve (With service port

5/16 in. (7.9mm) flare connection)

Filter

Double tube

heat exchanger

Fusible

plug

Accumulator

Filter

Solenoid valve

Capillary tube

Charge port

Solenoid valve

Filter

Capillary tube

Compressor

M1C

S1PH

High pressure

switch

Oil separator

Filter

Check valve

S1NPH

High pressure

sensor

Four way valve

Fan

Heat exchanger

Electronic

expansion valve

Heat sink

Pressure

regulating valve

Electronic

expansion valve

S1NPL

Low pressure

sensor

Summary of Contents for RXYQ-TA Series

Page 1: ...Service Manual SiUS341615E RXYQ72 408TAYDU RXYQ72 408TATJU Heat Pump 60 Hz...

Page 2: ...S391502 F7 FXTQ TA Air Handling Unit 2 4 2 3 2 3 3 4 3 5 3 4 3 5 3 3 2 3 4 7 4 5 Outdoor air processing unit FXMQ MF EDUS39 900A F10 4 Energy recovery ventilator VAM G EDUS711116A 2 Option list VRV in...

Page 3: ...nit Combinations 7 Part 2 Refrigerant Circuit 8 1 Refrigerant Circuit 9 1 1 Outdoor Unit 9 1 2 Indoor Unit 15 1 3 Outdoor Air Processing Unit 17 2 Functional Parts Layout 18 2 1 RXYQ72TAYDU 18 2 2 RXY...

Page 4: ...of Compressors 58 5 4 Compressor Step Control 59 5 5 Electronic Expansion Valve Control 59 5 6 Step Control of Outdoor Fans 60 6 Protection Control 61 6 1 High Pressure Protection Control 61 6 2 Low...

Page 5: ...0 2 3 Settings by BS Buttons 123 2 4 Normal Mode 125 2 5 Monitor Mode Mode 1 126 2 6 Setting Mode Mode 2 140 3 Test Operation 157 3 1 Checks before Test Operation 157 3 2 Checkpoints 157 3 3 Check Wor...

Page 6: ...Pressure Switch 215 3 30 Actuation of Low Pressure Sensor 217 3 31 Inverter Compressor Motor Lock 219 3 32 Compressor Damage Alarm 221 3 33 Outdoor Fan Motor Abnormality 223 3 34 Electronic Expansion...

Page 7: ...ter Capacity Setting 283 3 65 Address Duplication of Centralized Controller 284 3 66 Transmission Error between Centralized Controller and Indoor Unit 285 3 67 System not Set yet 288 3 68 System Abnor...

Page 8: ...ding Safety of Workers Warning Do not store the equipment in a room with fire sources e g naked flames gas appliances electric heaters Be sure to disconnect the power cable from the socket before disa...

Page 9: ...equipment failure Do not mix air or gas other than the specified refrigerant R 32 R 410A R 22 in the refrigerant system If air enters the refrigerating system excessively high pressure results causin...

Page 10: ...ble and lead wires are scratched or have deteriorated be sure to replace them Damaged cable and wires may cause an electrical shock excessive heat generation or fire Do not use a joined power cable or...

Page 11: ...work must be stopped be sure to pump down and close the service valve to prevent refrigerant gas from leaking into the room Refrigerant gas itself is harmless but it may generate toxic gases when it...

Page 12: ...has corroded replace it A corroded installation platform or frame may cause the unit to fall resulting in injury Check the earth grounding and repair it if the equipment is not properly earthed ground...

Page 13: ...ion is used when there is danger that the reader through incorrect manipulation may damage equipment loose data get an unexpected result or has to restart part of a procedure Note Note A Note provides...

Page 14: ...r Outdoor Units 2 1 1 Indoor Unit 2 1 2 Outdoor Unit 2 1 3 Air Treatment Equipment 3 2 External Appearance 4 2 1 Indoor Unit 4 2 2 Outdoor Unit 5 2 3 Air Treatment Equipment 5 3 Combination of Outdoor...

Page 15: ...Slim Ceiling Mounted Duct Type FXDQ 07M 09M 12M 18M 24M Ceiling Mounted Duct Type Middle and High Static Pressure FXMQ 07PB 09PB 12PB 15PB 18PB 24PB 30PB 36PB 48PB 54PB Ceiling Mounted Duct Type FXMQ...

Page 16: ...unit 1 RXYQ144TAYDU RXYQ168TAYDU RXYQ120TAYDU RXYQ96TAYDU RXYQ96TAYDU Outdoor unit 2 RXYQ168TAYDU RXYQ168TAYDU RXYQ120TAYDU RXYQ120TAYDU RXYQ144TAYDU Outdoor unit 3 RXYQ120TAYDU RXYQ168TAYDU RXYQ168TA...

Page 17: ...nd flow type FXFQ P Shown with BYCP125K W1 Ceiling suspended type FXHQ M 4 way ceiling mounted cassette 2 2 type FXZQ M Shown with BYFQ60B8W1U Wall mounted type FXAQ P 4 way blow ceiling suspended typ...

Page 18: ...or Unit Single Outdoor Unit Double Outdoor Unit Triple Outdoor Unit 2 3 Air Treatment Equipment Outdoor air processing unit FXMQ MF Energy recovery ventilator VAM series VAM G RXYQ96 120 144 168TA RXY...

Page 19: ...n piping kit separately sold is required System capacity Number of units Module Outdoor Unit Multi Connection Piping Kit 1 ton HP 72 96 120 144 168 6 7 5 1 O 8 10 1 O 10 12 5 1 O 12 15 1 O 14 17 5 1 O...

Page 20: ...units capacity 130 1 In heating mode fan speed is limited to L tap when indoor units capacity 130 2 Fan speed follows a setting of the remote controller not limited by indoor units connection capacity...

Page 21: ...Processing Unit 17 2 Functional Parts Layout 18 2 1 RXYQ72TAYDU 18 2 2 RXYQ96 120TAYDU 19 2 3 RXYQ144 168TAYDU 20 2 4 RXYQ72TATJU 21 2 5 RXYQ96 120TATJU 22 2 6 RXYQ144 168TATJU 23 3 Refrigerant Flow...

Page 22: ...ssure of 4 0 MPa 580 psi for prevention of pressure increase thus resulting in no damage of functional parts due to the increase of pressure in transportation or storage 12 Subcooling heat exchanger U...

Page 23: ...tion Liquid pipe Gas pipe Double tube heat exchanger Fusible plug Electronic expansion valve Pressure regulating valve Electronic expansion valve Heat sink Heat exchanger Four way valve High pressure...

Page 24: ...arts due to the increase of pressure in transportation or storage 13 Subcooling heat exchanger Used to subcooling liquid refrigerant from the electronic expansion valve 14 Capillary tube Used to retur...

Page 25: ...lter Solenoid valve Capillary tube Charge port SV Solenoid valve Filter Capillary tube Compressor M1C S1PH High pressure switch Oil separator Filter Check valve S1NPH High pressure sensor Four way val...

Page 26: ...n no damage of functional parts due to the increase of pressure in transportation or storage 16 Subcooling heat exchanger Used to subcooling liquid refrigerant from the electronic expansion valve 17 C...

Page 27: ...Oil separator Oil separator S1PH High pressure switch Filter Check valve Filter Check valve S1NPH High pressure sensor Four way valve M M Fan Fan Filter Filter Electronic expansion valve Heat sink S2P...

Page 28: ...ree control while in heating 4 Gas pipe thermistor R3T R3T R3T Used for gas superheated degree control while in cooling 5 Discharge air thermistor R4T Used for discharge air temperature control FXFQ T...

Page 29: ...S341615E Refrigerant Circuit Refrigerant Circuit 16 FXMQ PB FXTQ TA Indoor heat exchanger Fan Filter Filter 4 2 1 3 Gas piping connection port Liquid piping connection port C 4D034245P 5 C 4D068194 4...

Page 30: ...ressure 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 of electronic expansion...

Page 31: ...nsor S1NPL Thermistor Subcooling heat exchanger gas pipe R6T Thermistor Heat exchanger liquid pipe R4T Inverter fan M1F Electronic expansion valve Main Y1E Thermistor Subcooling heat exchanger liquid...

Page 32: ...nger liquid pipe R5T Inverter fan M1F Thermistor Outdoor air R1T Low pressure sensor S1NPL Solenoid valve Four way valve Y1S Electronic expansion valve Main Y1E Thermistor Heat exchanger liquid pipe R...

Page 33: ...liquid pipe R5T Inverter fan M1F Thermistor Outdoor air R1T Inverter fan M2F Low pressure sensor S1NPL Solenoid valve Four way valve Y1S Electronic expansion valve Main Y1E Thermistor Heat exchanger l...

Page 34: ...ermistor Subcooling heat exchanger gas pipe R6T Thermistor Heat exchanger liquid pipe R4T Inverter fan M1F Solenoid valve Four way valve Y1S Electronic expansion valve Main Y1E Thermistor Subcooling h...

Page 35: ...nger liquid pipe R5T Inverter fan M1F Thermistor Outdoor air R1T Low pressure sensor S1NPL Solenoid valve Four way valve Y1S Thermistor Heat exchanger liquid pipe R4T Thermistor Compressor body R8T Hi...

Page 36: ...liquid pipe R5T High pressure sensor S1NPH Thermistor Outdoor air R1T Inverter fan M2F Low pressure sensor S1NPL Solenoid valve Four way valve Y1S Electronic expansion valve Main Y1E Thermistor Heat e...

Page 37: ...tronic expansion valve Filter Filter Fan C 3D085567A High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure EV Normal control Stop valve With service por...

Page 38: ...ilter Fan High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure EV Normal control EV Normal control Stop valve With service port 5 16 in 7 9mm flare con...

Page 39: ...lter Filter Fan C 3D085567A High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure EV Normal control Stop valve With service port 5 16 in 7 9mm flare con...

Page 40: ...r Fan C 3D085567A High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure EV Normal control Stop valve With service port 5 16 in 7 9mm flare connection Fi...

Page 41: ...operation C 3D085598A High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure EV Normal control OFF ON ON Stop valve With service port 5 16 in 7 9mm flar...

Page 42: ...valve High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure EV Normal control EV Normal control Stop valve With service port 5 16 in 7 9mm flare connec...

Page 43: ...r Filter Fan C 3D085598A High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure EV Normal control Stop valve With service port 5 16 in 7 9mm flare connec...

Page 44: ...an C 3D085598A High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure EV Normal control Stop valve With service port 5 16 in 7 9mm flare connection Filte...

Page 45: ...s High temperature high pressure liquid Low temperature low pressure EV Normal control OFF ON ON Stop valve With service port 5 16 in 7 9mm flare connection Filter Filter Accumulator SV Filter Solenoi...

Page 46: ...e high pressure liquid Low temperature low pressure EV Normal control EV Normal control Stop valve With service port 5 16 in 7 9mm flare connection Filter Filter Accumulator SV Filter Solenoid valve F...

Page 47: ...as High temperature high pressure liquid Low temperature low pressure EV Normal control Stop valve With service port 5 16 in 7 9mm flare connection Filter Filter Accumulator SV Filter Solenoid valve F...

Page 48: ...mperature high pressure liquid Low temperature low pressure EV Normal control Stop valve With service port 5 16 in 7 9mm flare connection Filter Filter Accumulator SV Filter Solenoid valve Filter Capi...

Page 49: ...d Functions 38 2 1 BRC1E73 38 2 2 Wireless Remote Controller 40 3 MAIN SUB Setting 41 3 1 BRC1E73 41 3 2 Wireless Remote Controller 42 4 Centralized Control Group No Setting 43 4 1 BRC1E73 43 4 2 Wire...

Page 50: ...ontroller 1 Applicable Models Series Wired remote controller Wireless remote controller Navigation FXFQ T BRC1E73 FXFQ P FXZQ M BRC7E830 FXUQ P FXEQ P FXDQ M BRC4C82 FXMQ PB FXMQ M FXHQ M BRC7E83 FXAQ...

Page 51: ...o 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 indoor u...

Page 52: ...ghlight the next items on the right hand side Each screen is scrolled in the right hand direction 7 Left button W Used to highlight the next items on the left hand side Each screen is scrolled in the...

Page 53: ...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 AIR FLOW DIRECTION ADJUST BUTTON OPERATION MODE SELECTOR BUTTON...

Page 54: ...controller from MAIN to SUB proceed as follows The designation of the main and sub remote controllers can be swapped Note that this change requires turning the power OFF and then ON again Service set...

Page 55: ...less Remote Controller The address for the wireless remote controller is factory setting to 1 To change this setting proceed as follows 1 Hold down the button and the button for at least 4 seconds to...

Page 56: ...t and then press the Menu OK button Press the Cancel button once Service settings menu is displayed Item 2 is displayed Item 2 is displayed Item 2 is displayed Basic screen is displayed Press and hold...

Page 57: ...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 Press the Cancel button onc...

Page 58: ...INSPECTION TEST button for 4 seconds or more to enter field setting mode 2 Set mode No 00 with MODE button 3 Set the group No for each group with UP button or DOWN button 4 Enter the selected group n...

Page 59: ...played once for about 1 minute on the liquid crystal display This is not an operative fault Centralized Remote Controller F1 F2 F1 F2 F1 F2 F1 F2 P1 P2 RC RC RC RC RC F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1...

Page 60: ...ressor 2 operation Indoor Unit Status 1 Unit No Select the Unit No you want to check 2 FAN Fan tap 1 3 Speed Fan speed rpm 2 4 FLAP Airflow direction 5 EV Degree that electronic expansion valve is ope...

Page 61: ...ower supply frequency Hz 4 EV1 Degree that electronic expansion valve is open pulse 5 SV1 Solenoid valve ON OFF 6 Th1 7 Th2 8 Th3 9 Th4 10 Th5 11 Th6 Forced Defrost 1 Forced defrost ON Enables the for...

Page 62: ...Valve Control 59 5 6 Step Control of Outdoor Fans 60 6 Protection Control 61 6 1 High Pressure Protection Control 61 6 2 Low Pressure Protection Control 62 6 3 Discharge Pipe Protection Control 63 6 4...

Page 63: ...er Control for Preventing Ceiling Dirt 87 8 11 Heater Control Except FXTQ TA Models 88 8 12 Heater Control FXTQ TA Models 89 8 13 3 Step Thermostat Processing FXTQ TA Models 92 8 14 Fan Control Heater...

Page 64: ...tartup 1 Startup control in cooling 2 Startup control in heating Normal operation 1 Normal operation 2 Compressor capacity control 3 Operation priority and rotation of compressors 4 Compressor step co...

Page 65: ...Refer to Error Code and Description page 171 of the troubleshooting for the items to determine the error 2 2 When System is in Stop Mode The four way valves both for heat exchanger switch and piping...

Page 66: ...m In addition the outdoor fan carry out the residual operation for a while to suppress the acceleration of the pressure equalizing and melting of the refrigerant to the evaporator 3 2 Crankcase Heater...

Page 67: ...ur way valve 4 1 Startup Control in Cooling Pc High pressure sensor detection value Pe Low pressure sensor detection value Ta Outdoor air temperature Te Low pressure equivalent saturation temperature...

Page 68: ...2 Hz 20 sec A B C D E A 0 pulse Step 4 Step 8 OR UT Ta Te control A Inverter compressor 1 M1C Inverter compressor 2 M2C Electronic expansion valve main Y1E Inverter fan M1F RXYQ72TA M1F M2F RXYQ96 168...

Page 69: ...z 0 480 pulses at compressor ON Four way valve Y1S z z OFF Solenoid valve Accumulator oil return Y2S z z Close if DSH 15 C 27 F Solenoid valve Oil return 1 Y3S z z Only close if Pc Pe 0 3 MPa 43 5 ps...

Page 70: ...anged based on the selected sub function taking indoor load into account The initial target saturated temperature can be changed For details refer to Description field settings mode 2 m2 on outdoor un...

Page 71: ...ove diagram shows master unit slave unit 1 and slave unit 2 from left to right 2 Compressors may operate in any pattern other than those mentioned above according to the operating status Pattern 1 Pat...

Page 72: ...pen if level difference outdoor maximum 90 m 295 ft above indoor units field setting 2 49 1 Heating electronic expansion valve is used in PID control suction superheat Compressor s OFF fully closed 0...

Page 73: ...e controlled while in standard mode which vary when the system is set to high static pressure or capacity priority mode Step Fan revolutions rpm RXYQ72TA RXYQ96 120TA RXYQ144 168TA M1F M2F M1F M2F 0 0...

Page 74: ...rmed in the entire system Normal operation High pressure standby Reduce compressor capacity step When occurring 4 times within 40 minutes high pressure switch is activated without high pressure standb...

Page 75: ...e following control is performed in the system Normal operation Pe 0 34 MPa 49 8 psi Low pressure standby Reduce compressor capacity step Pe 0 07 MPa 9 95 psi Pe 0 39 MPa 56 9 psi When occurring 4 tim...

Page 76: ...or or transient increase of compressor body temperature The following control is performed for each compressor of single unit as well as multi units Inverter compressor Normal operation Discharge pipe...

Page 77: ...XYQ96 120TA RXYQ144 168TA M1C M1C M1C M2C TAYDU A 11 0 A 18 0 A 11 5 A 11 5 A B 11 0 A 18 0 A 11 5 A 11 5 A C 13 0 A 21 5 A 13 0 A 13 0 A TATJU A 27 6 A 33 8 A 27 6 A 27 6 A B 26 5 A 32 5 A 26 5 A 26...

Page 78: ...pressure value above upper limit of sensor error JC Mechanical internal load on compressor increases Low compression ratio can result in insufficient compressor internal oil lubrication Heating is dis...

Page 79: ...of outdoor unit rotation In the case of multi outdoor unit system each outdoor unit is given an operating priority for the control Outdoor unit rotation makes it possible to change the operating prior...

Page 80: ...not change Normal operation Priority 1 Priority 2 Priority 3 Priority 3 Priority 1 Priority 2 Normal operation Normal operation Priority 2 Priority 3 Priority 1 Normal operation Priority 3 Priority 1...

Page 81: ...s computed from Tc Te and compressor loads z equipped not equipped 1 RXYQ96 120TA only Part Name Electric Symbol RXYQ72 120TA RXYQ144 168TA Function of Functional Part Inverter compressor 1 M1C z z Ca...

Page 82: ...z 1 z Electronic expansion valve Main Y1E z z RXYQ72TA 480 pulses RXYQ96 168TA 3 000 pulses Electronic expansion valve Injection Y2E z z 0 pulse Four way valve Y1S z z OFF Solenoid valve Accumulator...

Page 83: ...ating conditions Outdoor air temperature 3 C 37 4 F During defrost operation Part Name Electric Symbol RXYQ72 120TA RXYQ144 168TA Operation Inverter compressor 1 M1C z z RXYQ72TA 266 Hz RXYQ96 120TA 1...

Page 84: ...nal to outdoor unit Output Thermostat ON operation signal to outdoor unit Output 1 If any error occurs the relevant error code will be displayed according to the error code display of the remote contr...

Page 85: ...on instruction from the remote controller the wind direction is set to 100 horizontal while in heating operation 11 Fan According to fan speed instruction from the remote controller the fan is put int...

Page 86: ...d temperature 2 C 3 6 F The temperature difference for cooling heating mode switching is 5 C 9 F The above also applies to automatic operation When setting the suction air thermistor Default setting W...

Page 87: ...remote controller set temperature Regarding control target temperature When using the infrared floor sensor the temperature around people will be treated as the control target temperature for operatio...

Page 88: ...ote controller thermistor near the position of the user when the suction temperature is near the set temperature Assuming the set temperature in the figure above is 24 C 75 F and the suction temperatu...

Page 89: ...ction temperature has changed from 18 C 64 F to 28 C 82 F A D This example also assumes there are several other air conditioners and the suction temperature changes even when the thermostat sensor is...

Page 90: ...o will be the same as the cooling set temperature at the time of starting dry operation 1 The thermistor for room temperature detection depends on the field setting 10 20 2 2 Description of symbols T...

Page 91: ...perate 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 Heating operation When the floor tempera...

Page 92: ...mode Cooling mode 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 Differenti...

Page 93: ...After the thermostat turns OFF the drain pump continues to operate for another 5 minutes 1 If the float switch turns ON again during the residual operation of the drain pump cooling operation also tu...

Page 94: ...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 contr...

Page 95: ...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 96: ...pipe temperature 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...

Page 97: ...15 minutes or Liquid pipe temperature 0 C 32 F for 1 minute continuously During freeze up prevention operation the airflow rate is fixed to LL The cancelling conditions are same as the standard 0 C 3...

Page 98: ...ode for prevention of cold air Swing LL Horizontal Horizontal Horizontal Horizontal Airflow direction set LL Horizontal Horizontal Horizontal Horizontal Stop Swing OFF Horizontal Horizontal Horizontal...

Page 99: ...re 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 Ending con...

Page 100: ...FQ FXZQ and FXEQ models Factory setting FXFQ models draft prevention position FXZQ FXEQ 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...

Page 101: ...ed 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 un...

Page 102: ...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 Thermostat OFF Operatio...

Page 103: ...mperature condition ON 2 Heater ON permission Defrost oil Return 0 4 Not during defrost oil return No fan motor system error During defrost oil return Heater ON permission Defrost oil return 1 4 OR No...

Page 104: ...l value Thermostat OFF Operation OFF ENTRY 5 minutes timer starts Condition A Time up 2 H P Heating Not in operation Heater 1 ON Heater 2 OFF Fan ON Entry 5 minutes timer starts OR Thermostat step 2 O...

Page 105: ...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 temperature is wit...

Page 106: ...LEANER terminal on the PCB 2 Field setting 14 24 4 Refer to page 113 8 15 2 Humidifier When a humidifier is connected onsite the fan operates with the airflow rate set of the remote controller or with...

Page 107: ...turns ON the relay on the X2M ECONOMIZER2 on the PCB 2 External input ON is an input signal to the X1M ECONOMIZER1 terminal on the PCB 3 Refer to Optional Kit Setting UV lamp Humidifier Economizer fo...

Page 108: ...etting Contents and Code No for Indoor Units 100 2 Field Settings for Outdoor Unit 118 2 1 Function Setting 118 2 2 Settings by DIP Switches 120 2 3 Settings by BS Buttons 123 2 4 Normal Mode 125 2 5...

Page 109: ...p 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 Field settings scr...

Page 110: ...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 is display...

Page 111: ...ng 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 button to select the second code...

Page 112: ...ting W 4 During group control when setting by each indoor unit mode No 20 22 and 23 have been selected press the BS8 4 button unit No and select the indoor unit No to be set This operation is unnecess...

Page 113: ...rature Ton Refer to page 106 for detail 2 Auxiliary electric heater OFF temperature Toff 3 Setting the airflow rate when heating Standard Slightly increased Increased 3 6 Electric heater setting Refer...

Page 114: ...dard High ceiling 1 High ceiling 2 1 Airflow direction setting Set when a blocking pad kit has been installed F 4 directions T 3 directions W 2 directions 2 Swing pattern settings All direction synchr...

Page 115: ...or standing type Concealed floor standing type Air handling unit Round flow 4 way flow FXFQ FXZQ FXUQ FXEQ FXDQ FXMQ FXHQ FXAQ FXLQ FXNQ FXTQ Filter sign z z z z z z z z z z z Ultra long life filter s...

Page 116: ...03 room temperature is controlled by the remote controller thermistor FXTQ TA When the Second Code No is set to 02 room temperature is controlled by the remote sensor thermistor When the Second Code N...

Page 117: ...6 75 2 78 8 82 4 86 89 6 F F 14 16 18 20 22 24 26 28 30 32 34 66 2 62 6 69 8 73 4 77 80 6 84 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 ai...

Page 118: ...continues for a certain period of time Absent time defined for detection can be selected as follows The set temperature displayed on the remote controller remains same even if the target temperature...

Page 119: ...No First Code No Symbol Second Code No 01 02 03 04 05 06 11 21 1 Ton 4 C 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 2 C 3 6 F 1 5 C 2 7 F 1 C 1 8 F 0 5 C 0 9 F 0 C 0 F 0 5 C 0...

Page 120: ...efrost oil return operation 11 21 3 01 Electric heater with heat pump not allowed Not allowed 02 Electric heater with heat pump allowed Not allowed 07 Electric heater with heat pump not allowed Allowe...

Page 121: ...presence sensor only Change the ratio between the suction air temperature and floor temperature used to calculate the temperature around human The temperature around human is calculated using the valu...

Page 122: ...Code No Contents 11 21 9 01 4 C 7 2 F 02 2 C 3 6 F 03 0 C 0 F 04 2 C 3 6 F Environment Operation Mode Problem Setting Value The unit is installed close to a wall or a window High thermal capacity of t...

Page 123: ...ply turned ON again return to the same operation condition as that of before power failure For the above reasons when the unit is set enabling to utilize Auto restart function after power failure rese...

Page 124: ...e No First Code No Second Code No Contents 13 23 0 01 Standard 02 Slight increase 03 Normal increase Mode No First Code No Second Code No Contents Ceiling height 4 way Outlets 3 way Outlets 2 way Outl...

Page 125: ...t be set to 110 200 Pa 0 44 0 80 inWG 3 FXMQ54PB cannot be set to 30 Pa 0 12 inWG or 150 200 Pa 0 60 0 80 inWG Mode No First Code No Second Code No Contents 13 23 3 01 Equipped 02 Not equipped Mode No...

Page 126: ...e thermostat is stopped For the purpose of preventing dust on the air filter from falling off Mode No First Code No Second Code No Contents UV lamp humidifier fan speed Economizer setting for Mech sta...

Page 127: ...t display is not preferred Key lock Pattern Settings For BRC1E73 only Setting of key lock pattern for the remote controller When the Second code No is set to 04 no menu operation is allowed without ke...

Page 128: ...ent the airflow block is advertently set to ON Ensure that this setting is Disable airflow block when using together with options listed above Room Temperature Display For BRC1E73 only A Detailed disp...

Page 129: ...trol only possible by remote controller Used when you want to turn ON by central remote controller only and OFF by remote controller only Centralized Used when you want to turn ON by central remote co...

Page 130: ...ation 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 ON OFF co...

Page 131: ...tional COOL HEAT switch Optional board BRP2A81 required in 1 outdoor unit per zone 2 1 Optional COOL HEAT switch KRC19 26B 2 2 Set DIP switch DS1 1 on the outdoor board to OUT upper 2 3 Install option...

Page 132: ...mode 2 13 5 High level difference outdoor to indoor Required setting when level difference between outdoor and indoor units of same refrigerant exceeds standard level Set mode 2 No 35 to 1 if outdoor...

Page 133: ...DIP switch DS1 1 if required DIP switch Setting item Description No Setting DS1 1 ON COOL HEAT select Used to choose source to select Cooling Heating fan only Source can be or indoor remote controller...

Page 134: ...initialization a test operation is required from outdoor unit hold BS2 SET till indication t01 appears 3 BS button BS1 BS3 2 Segment display SEG1 SEG3 4 DIP switch DS1 1 4 DS2 1 4 1 Microcomputer norm...

Page 135: ...of power disconnected Application model The setting method represents the position of switches RXYQ72TA Set DS1 2 DS1 4 and DS2 2 to ON RXYQ96 120TA Set DS1 2 DS1 4 DS2 1 and DS2 2 to ON RXYQ144TA Set...

Page 136: ...uble by communication Setting mode Used to make changes to operating status performance settings or address setting Monitor mode Used to verify contents of settings quantity of units current value of...

Page 137: ...S1 MODE for more than 5 sec Normal mode Initial condition Press BS3 RETURN once Setting item selection SET Setting condition selection SET Press BS3 RETURN once Setting condition Contents display Pres...

Page 138: ...ansmission status Used to check for the initial status of indoor outdoor transmission 2 Error contents Used to display an error content Initializing SEG1 SEG2 SEG3 Initializing completed OFF ON Blinki...

Page 139: ...MODE BS1 RETURN BS3 RETURN BS3 SET BS2 Checking for description of data Press the SET BS2 button to set the 7 segment display to any of the monitoring items listed in the table on the following page P...

Page 140: ...try 1 24 Contents of retry 1 cycle before Previous system retry 1 1 25 Contents of retry 2 cycle before Previous system retry 2 1 34 Days remaining till the next automatic leak detection Shows the rem...

Page 141: ...setting 1 0 4 Slow defrost Normal Quick defrost 0 1 2 5 Te setting 1 0 5 Automatic Low 3 C 37 4 F Normal 6 C 42 8 F High sensible 7 C 44 6 F High sensible 8 C 46 4 F High sensible 9 C 48 2 F High sen...

Page 142: ...door unit PCB 1 3 3 Possible 0 15 1 0 5 38 Number of connected RA indoor through BP unit 1 3 8 Possible 0 63 6 0 3 40 Cooling comfort setting see mode 2 No 8 1 4 0 Possible 0 7 0 7 41 Heating comfort...

Page 143: ...e indoor unit are not shown on the outdoor display For inspecting error code on indoor unit please consult Display of the remote controller connected to the indoor units If there are no remote control...

Page 144: ...or Slave unit 2 1 5 18 Overall retry of high pressure switch 1 8 E4 1 Low pressure sensor error Master unit E 4 0 1 2 Low pressure sensor error Slave unit 1 0 2 3 Low pressure sensor error Slave unit...

Page 145: ...1 1 3 Discharge pipe high temperature error Slave unit 1 1 3 5 Discharge pipe high temperature error Slave unit 2 1 5 20 Compressor overheat error Master unit 2 0 21 Compressor overheat error Slave un...

Page 146: ...ge pipe 2 thermistor Short Slave unit 1 2 5 30 Defective discharge pipe 2 thermistor Open Slave unit 2 3 0 31 Defective discharge pipe 2 thermistor Short Slave unit 2 3 1 J3 47 Defective compressor bo...

Page 147: ...ressure sensor Short Slave unit 2 1 1 JC 6 Defective low pressure sensor Open Master unit J C 0 6 7 Defective low pressure sensor Short Master unit 0 7 8 Defective low pressure sensor Open Slave unit...

Page 148: ...Defective inverter compressor 2 ROM Slave unit 1 3 9 49 Power supply inverter compressor 1 error Slave unit 1 4 9 50 Power supply inverter compressor 2 error Slave unit 1 5 0 L1 11 Instantaneous overc...

Page 149: ...5 Inverter compressor 1 startup error Slave 1 0 5 6 Inverter compressor 1 startup error Slave 2 0 6 10 Inverter compressor 2 startup error Master 1 0 11 Inverter compressor 2 startup error Slave 1 1...

Page 150: ...0 8 9 Defective reactor thermistor 1 Slave 2 Inverter PCB 2 0 9 10 Defective reactor thermistor 2 Master Inverter PCB 2 1 0 11 Defective reactor thermistor 2 Slave 1 Inverter PCB 2 1 1 12 Defective re...

Page 151: ...1 power supply Slave 2 1 2 13 Defective capacitor in inverter 1 main circuit Slave 2 1 3 22 Shortage of inverter 2 power supply voltage Master 2 2 23 Open phase of inverter 2 power supply Master 2 3...

Page 152: ...ion error 2 1 29 Branch selector BSVQ P connected to heat pump system 2 9 31 Multi unit combination error 3 1 38 Daikin Altherma indoor unit detected 3 8 39 Other hydrobox type than HXY A unit detecte...

Page 153: ...N BS3 button and decide the item The present setting condition is blinked Press the SET BS2 button and set to the setting condition you want Press the RETURN BS3 button and decide the condition Press...

Page 154: ...2 8 51 8 F 0 Standard 6 C 42 8 F 2 High sensible 7 C 44 6 F 3 High sensible 8 C 46 4 F 4 High sensible 9 C 48 2 F 5 High sensible 10 C 50 0 F 6 High sensible 11 C 51 8 F 7 9 Tc setting Used to make se...

Page 155: ...evel 7 90 7 Level 8 95 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 1 Level 2 50 2 Level 3 55 3 32 Normal demand setting...

Page 156: ...ort setting Heating comfort setting 2 8 2 Eco 0 Mild 1 Quick 2 Powerful 3 83 Master user interface setting Master user interface allocation in case VRV DX indoor units and RA DX indoor units are used...

Page 157: ...y Range SEG 1 SEG 2 SEG 3 SEG 1 SEG 2 SEG 3 96 Auxiliary heater maximum allowable temperature Auxiliary heater is allowed to energize when the ambient temperature is smaller than the auxiliary heater...

Page 158: ...multiple systems need to operate as a zone should be same as the address set by the DIP switches on the related optional PCB DTA104A61 62 Default value 0 Field setting 1 31 The source for cool heat s...

Page 159: ...e function and or power consumption limitation via external control adaptor DTA104A61 62 If the system needs to be running under night time low noise operation or under power consumption limitation co...

Page 160: ...system it is necessary to apply a setting which will open required valves in the refrigerant circuit so the reclaim of refrigerant or vacuuming process can be done properly Default value 0 To activat...

Page 161: ...n 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 are...

Page 162: ...r transistor check mode RXYQ TA disconnect fasten U V W from compressor step1 mode 2 code 28 set 01 02 Return 2x step 2 mode 2 code 28 set 02 01 Return 2x OR exit mode 2 mode button Check 1 Check 2 Ch...

Page 163: ...unit this setting defines the level power consumption limitation that will be applied for step 2 The level is according to the table Value 2 30 Power consumption limitation approximately 1 60 2 65 3...

Page 164: ...40 m 131 ft the setting 2 35 should be changed to 0 Value 2 32 Restriction reference 0 default Function not active 1 Follows 2 30 setting 2 Follows 2 31 setting Value 2 34 Indoor fan tap setting 0 de...

Page 165: ...ter module are disabled permanent 2 39 Emergency operation Slave 1 To disable permanent compressor operation of Slave 1 unit of a multi outdoor system RXYQ TA Default value 0 Compressor operation enab...

Page 166: ...ference 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 Slave setting Multi When 2 or 3 modules are installed as a multi out...

Page 167: ...ror generation In case an indoor unit needs maintenance or repair on the electric side it is possible to keep the rest of the VRV DX indoor units operating without power supply to some indoor unit s D...

Page 168: ...t temperature is smaller than the auxiliary heater maximum allowable temperature Value 2 78 Heat pump lockout temperature 0 default 26 1 C 15 F 1 23 3 C 10 F 2 20 5 C 5 F 3 17 7 C 0 F 4 15 C 5 F 5 12...

Page 169: ...release differential Auxiliary heater is not allowed to energize when the outdoor ambient temperature is recovered by differential above the auxiliary heater maximum allowable temperature Value 2 98...

Page 170: ...nings Are all units securely installed z Dangerous for turning over during storm z Possible damage to pipe connections Is the earth wire installed according to the applicable local standard Dangerous...

Page 171: ...se a megger tester for other circuits than 400 V or 200 V circuit 1 Measure to be taken against decreased insulation resistance in the compressor If the compressor is left to stand for an extended per...

Page 172: ...e field settings with the master unit Field settings made with the slave unit will be all invalid The check operations shown below will be automatically initiated Check for erroneous wirings Check for...

Page 173: ...ge Abnormality 192 3 12 Blower Motor Stops for Over Under Voltage 193 3 13 Electronic Expansion Valve Coil Abnormality Dust Clogging 194 3 14 Drain Level above Limit 195 3 15 Capacity Determination De...

Page 174: ...tting after Replacing Outdoor Unit Main PCB Abnormality or Combination of PCB Abnormality 259 3 54 Refrigerant Shortage 260 3 55 Reverse Phase Open Phase 261 3 56 Power Supply Insufficient or Instanta...

Page 175: ...Procedure 298 4 8 Thermistor Check 299 4 9 Pressure Sensor Check 302 4 10 Broken Wire Check of the Relay Wires 303 4 11 Fan Motor Connector Check Power Supply Cable 304 4 12 Fan Motor Connector Check...

Page 176: ...ng in a room The model must be selected to match the air conditioning load In cooling Too many heat sources e g OA equipment located in a room 4 The system does not operate The system stops and immedi...

Page 177: ...cording to the setting Even pressing the airflow rate setting button makes no changes in the airflow rate In heating operation when the room temperature reaches the set degree the outdoor unit will st...

Page 178: ...f operating sounds changes The reason is that the compressor changes the operating frequency Normal operation 12 Dust comes out from the system Dust comes out from the system when it restarts after th...

Page 179: ...routinely lifted become horizontal during heating operation No defect Set louver to horizontal P0 during thermostat OFF 9 Although people are not present the infrared presence sensor detects human pr...

Page 180: ...Basic Screen Operation 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 on...

Page 181: ...Operation lamp 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 the screen...

Page 182: ...cation of the error code blinks 4 Press the UP or DOWN button to change the error code upper digit until the receiver of the remote controller starts to beep The upper digit of the code changes as sho...

Page 183: ...ION TEST button to enter the inspection mode 7 When MODE button is pressed or no button is pressed for 1 minute equipment returns to normal mode 6 Change the lower digit with UP or DOWN button If no b...

Page 184: ...parameters to function 203 C9 2 l Suction air thermistor abnormality 200 Remote sensor abnormality 204 CA l Discharge air thermistor abnormality 200 CC k Humidity sensor system abnormality 205 CE 1 k...

Page 185: ...ing outdoor unit main PCB abnormality or combination of PCB abnormality 259 System U0 1 k Refrigerant shortage 260 U1 l Reverse phase open phase 261 U2 l Power supply insufficient or instantaneous abn...

Page 186: ...at the dust collection port as well as in the brush unit S shaped pipe and dust box Furthermore check for any stains of the light receiving and emitting parts of the infrared unit AH 06 Air filter rot...

Page 187: ...external ON OFF terminal Supposed Causes Actuation of external protection device Improper field setting Defective indoor unit PCB Troubleshooting ON OFF input from outside mode No 12 first code No 1 h...

Page 188: ...between external input terminals Supposed Causes Actuation of external protection device Defective indoor unit PCB Indoor unit fuse blown Troubleshooting Fuse F1U is blown External protection device...

Page 189: ...volatile memory Maintains memory contents even when the power supply is turned OFF Supposed Causes Defective indoor unit PCB External factor Noise etc Troubleshooting Turn the power supply OFF then th...

Page 190: ...or disconnecting 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...

Page 191: ...ES NO NO The drain pump works when the power supply is reset for the indoor unit The voltage of drain pump terminals 2 is 208 230 V within 5 minutes of resetting the power supply A Model 1 Float switc...

Page 192: ...Supposed Causes Broken wires 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...

Page 193: ...ly rotated by hand Replace the indoor fan motor M1F NO Replace the indoor fan motor M1F NO YES Are there any foreign matter around the fan YES Is the resistance between the pins more than the judgemen...

Page 194: ...XFQ09 30P X20A Relay connector FXFQ36 48P X20A FXUQ A X20A Relay connector FXEQ P X20A FXMQ07 12PB X8A FXAQ P X20A Measuring point FG GND Vsp GND Vcc GND Vdc GND Criteria 1 M or more 100 k or more 100...

Page 195: ...voltage to the fan Supposed Causes Defective indoor fan motor Broken wires Defective contact Troubleshooting NO YES YES Is the X4A connector securely connected NO Is the power of 12 VDC supplied betw...

Page 196: ...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 is less than a certain level...

Page 197: ...PCB A2P NO Replace the indoor fan motor 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 fan motor NO YES NO YES There is a fore...

Page 198: ...U terminals of the motor connector with five conductors Replace the indoor fan motor YES NO Between Vcc and GND terminals and between GND and Hw Hv or Hu terminals are short circuited Replace the indo...

Page 199: ...e in operation Supposed Causes Defective power supply for the indoor fan motor Clogged drain piping Actuation of the indoor unit safety device Defective contact in the fan wiring circuit Troubleshooti...

Page 200: ...alities Checks the rotation speed at 5 second intervals using the feedback of the fan motor Performs rotation sampling 720 times takes approx one hour and if the rotation speed falls below 50 rpm over...

Page 201: ...f the 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...

Page 202: ...s 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 Con...

Page 203: ...unit is a model equipped 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 tu...

Page 204: ...M2S M3S M4S FXEQ P X36A M1S M2S M3S M4S FXHQ M X6A M1S 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 O...

Page 205: ...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 defective wir...

Page 206: ...Decision Conditions If the information shows Over Under Voltage status it will be deemed a MOTOR VOLTS abnormal operation Error Reset Conditions If the information is normal the error will be cleared...

Page 207: ...of suction air R2T temperature of liquid pipe of heat exchanger Supposed Causes Defective electronic expansion valve coil Defective indoor unit main PCB Defective relay cables Troubleshooting Refer to...

Page 208: ...s 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 Defective indoor unit m...

Page 209: ...the 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 no...

Page 210: ...1P Defective fan PCB A2P External factor such as instantaneous power failure Troubleshooting Under above field setting mode second code No is 01 NO NO YES Replace the fan PCB A2P YES YES Is the connec...

Page 211: ...remove the connector X70A of indoor unit PCB A1P 2 Short circuit X70A 3 After turning ON the power check below numbers under field setting from remote controller Confirmation Second code No at the co...

Page 212: ...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 the in...

Page 213: ...04 for C9 for FXTQ TA models Refer to page 299 Is the thermistor normal Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 5 k to 90 k R...

Page 214: ...etting 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 main PCB A1P re...

Page 215: ...ion 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 deemed...

Page 216: ...cluded 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 deemed a...

Page 217: ...Troubleshooting Note 1 Connector and indoor unit PCB Refer to page 299 Is the optional remote sensor is installed Field setting 10 20 2 is set to 03 Connector is connected to the indoor unit PCB 1 Res...

Page 218: ...the check mode 2 To display the code the INSPECTION TEST button of the remote controller must be pressed and held in the normal mode 3 If CC is displayed even after replacing the humidity sensor PCB...

Page 219: ...sor connector CE 01 Defective infrared floor sensor Temperature compensation circuit disconnection CE 02 Defective infrared floor sensor Temperature compensation short circuit CE 03 Defective infrared...

Page 220: ...refer to sensor and address data No 22 25 Connect the connector correctly Connect the connector correctly NO YES YES Is the connection of the adaptor PCB connector X9A normal NO YES YES Is the connect...

Page 221: ...refer to sensor and address data No 26 Connect the connector correctly Connect the connector correctly NO YES YES Is the connection of the adaptor PCB connector X9A normal NO YES YES Is the connectio...

Page 222: ...infrared floor sensor output refer to sensor and address data No 26 Is the connection of the adaptor PCB connector X9A normal Is the connection of the sensor connector normal Displays by the above ver...

Page 223: ...infrared floor sensor output refer to sensor and address data No 26 Is the connection of the adaptor PCB connector X9A normal Is the connection of the sensor connector normal Displays by the above ver...

Page 224: ...r Defective remote controller PCB Troubleshooting Note 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 mod...

Page 225: ...tion between the indoor unit and the outdoor unit are not normal Supposed Causes Defective outdoor unit main PCB A1P Disconnection of the inside outside relay wires Troubleshooting Return to normal YE...

Page 226: ...ution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Correct the wiring Normal Keep operating It is possibly caused by temporary oil return...

Page 227: ...X101A Wiring disconnection Defective outdoor unit main PCB Troubleshooting Sub code 06 to 08 NO YES Is the system reset to normal Is X101A connected The error is considered to have resulted from exter...

Page 228: ...CB A1P Momentary power failure Defective high pressure sensor Troubleshooting NO YES YES Replace the high pressure switch RXYQ72 120TA S1PH RXYQ144 168TA S1PH S2PH Remedy defective points YES Are the...

Page 229: ...he high pressure value and the actual value measured by pressure sensor are the same The high pressure sensor is normal and pressure detection with the outdoor unit main PCB is also normal The high pr...

Page 230: ...normal 1 NO YES 1 Mount a pressure gauge on the low pressure service port 2 Reset the operation using the remote controller and then restart the operation Is the stop valve open The low pressure senso...

Page 231: ...te 1 Make a comparison between voltage measured by the pressure sensor and that read by the pressure gauge The pressure sensor makes measurement of voltage at its connector block to convert it to pres...

Page 232: ...ubleshooting Make proper wire connections Make proper wire connections NO NO NO NO YES YES YES YES Power OFF Is the connection line of the relevant compressor normal Are wire connections made to phase...

Page 233: ...ization failure may have occurred Check for the refrigerant system YES YES NO Replace the inverter PCB 2 2 RXYQ72 120TA A3P RXYQ144 168TA A3P A6P NO The error recurs at startup Continue operation The...

Page 234: ...the system 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 D...

Page 235: ...onvert it to pressure Refer to page 295 Refer to page 302 NO YES Replace the outdoor unit main PCB A1P NO Replace the inverter PCB RXYQ72 120TA A3P RXYQ144 168TA A3P A6P CHECK 4 Is the power transisto...

Page 236: ...e fan motor runs Error Decision Conditions Overcurrent is detected from the inverter PCB or the fan PCB Detecting overcurrent 4 times will shut down the system The fan revolutions fall below a given l...

Page 237: ...Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged A Check for any wire connection errors in 2 units of fan motors Fan motor 1 Power supply cabl...

Page 238: ...n inverter PCB 2 blinks but that on fan PCB 1 does not blink Replace the relevant fan motor YES Signal cable has caused short circuit between Vcc and Gnd and between UVW and Gnd Turn ON the power supp...

Page 239: ...Detection Detect according to whether or not there is continuity across the electronic expansion valve coils Y1E Y2E Error Decision Conditions When no current flows through common COM at the time of t...

Page 240: ...ected Properly and securely connect the connector NO YES The resistance of the electronic expansion valve coil is normal 1 Replace the electronic expansion valve NO Replace the outdoor unit main PCB A...

Page 241: ...ormally 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 abn...

Page 242: ...er Reset the system operation and then restart it Are the characteristics of the discharge pipe and compressor body thermistors normal 1 All thermistors are normal and temperature detection with the o...

Page 243: ...essure of each part 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 t...

Page 244: ...S 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 may...

Page 245: ...efrigerant overcharged Disconnection of outdoor air thermistor Disconnection of heat exchanger deicer thermistor Disconnection of liquid pipe temperature thermistor Troubleshooting Refer to page 299 C...

Page 246: ...disabled during the compressor stops running Supposed Causes Defective connection of jumpers between PCB Defective outdoor unit main PCB A1P Defective inverter PCB Troubleshooting Check for the transm...

Page 247: ...page 304 Properly connect the connector NO YES Replace the fan motor NO YES Turn OFF the power supply Check for the connector of the fan motor Replace the fan PCB RXYQ72TA A4P RXYQ96 120T A4P A5P RXY...

Page 248: ...iring disconnection or short circuit in it Supposed Causes Defective connection of thermistor Defective thermistor Defective outdoor unit PCB Troubleshooting Thermistor is connected to the connector R...

Page 249: ...T X18A J3 Discharge pipe M1C thermistor R21T X29A R21T X29A Group connector R21T X29A Group connector Discharge pipe M2C thermistor R22T Compressor body thermistor R8T J5 Accumulator inlet thermistor...

Page 250: ...Detect according to temperature detected with the high pressure sensor Error Decision Conditions The high pressure sensor is short circuit or open circuit Pressure range 0 4 3 MPa 0 624 psi Supposed C...

Page 251: ...ation and restart operation 1 Mount a pressure gauge on the high pressure service port 2 Connect the Service Checker for VRV systems Caution Be sure to turn off the power switch before connecting or d...

Page 252: ...ion Detect according to temperature detected with the low pressure sensor Error Decision Conditions The low pressure sensor is short circuit or open circuit Pressure range 0 1 7 MPa 0 247 psi Supposed...

Page 253: ...the characteristics of the low pressure sensor normal Replace the low pressure sensor S1NPL NO YES YES YES Reset the operation and then restart the operation 1 Mount a pressure gauge on the low press...

Page 254: ...ed during the output of waveform before compressor startup Detect according to current value detected with the current sensor during synchronous operation for startup Error Decision Conditions When ov...

Page 255: ...2 Replace the inverter PCB 1 1 RXYQ72 120TA A3P RXYQ144 168TA A3P A6P 2 RXYQ72TA A4P RXYQ96 120T A4P A5P RXYQ144 168TA A4P A7P NO YES Turn OFF the power supply once and then turn it ON again 12 14 to...

Page 256: ...face thermistor is more than the specified temperature Supposed Causes Defective connection of harness Defective reactor surface thermistor Defective inverter PCB Troubleshooting Is reactor harness co...

Page 257: ...ration Field factor Power module temperature may have risen due to high outdoor air temperature Turn ON the power supply and then press the ON button continuously Does the error recur Replace the inve...

Page 258: ...ailure mechanical lock Defective inverter PCB Troubleshooting Compressor inspection Power OFF Open the stop valve YES NO Is the stop valve open YES Caution Be sure to turn off the power switch before...

Page 259: ...e insulation resistance of the relevant compressor is 100 k or less Replace the compressor 1 1 RXYQ72 120TA M1C RXYQ144 168TA M1C M2C YES The coil of the relevant compressor has caused wiring disconne...

Page 260: ...iring Defective inverter PCB Troubleshooting Power OFF Open the stop valve YES NO Is the stop valve open YES Caution Be sure to turn off the power switch before connecting or disconnecting connectors...

Page 261: ...S The insulation resistance of the relevant compressor is 1 M or less to ground Replace the compressor 1 1 RXYQ72 120TA M1C RXYQ144 168TA M1C M2C YES The coil of the relevant compressor has caused wir...

Page 262: ...models Method of Error Detection Detect error according to the signal waveform of compressor Error Decision Conditions When compressor startup operation has not been completed Supposed Causes The stop...

Page 263: ...o power applied for a period of 6 hours or more Eliminate the melting state of refrigerant YES Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may b...

Page 264: ...YQ144 168TA A3P A6P NO YES NO There is wiring disconnection in the compressor Replace the inverter compressor YES Is the insulation resistance of the relevant compressor 100 k or more Refrigerant is m...

Page 265: ...se filter External factors e g noise Defective inverter compressor Defective fan motor Troubleshooting Replace with a proper PCB NO Properly connect the connector NO YES The insulation resistance of t...

Page 266: ...computer normal monitor indication lamp green on the control PCB A1P is blinking Properly connect the connector NO YES Is the connector between the control PCB and the sub PCB securely connected Prope...

Page 267: ...ce through 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 pressing the...

Page 268: ...e contact of noise filter Replace the inverter PCB RXYQ72 120TA A3P RXYQ144 168TA A3P A6P YES Explanation to users Use the document Notice of Inspection Results attached to spare part Hand the Notice...

Page 269: ...fective reactor thermistor Defective inverter PCB Troubleshooting Check in Monitor Mode 12 14 ton are equipped with 2 compressors Check for the compressor 1 or 2 applicable to the error code P3 while...

Page 270: ...r stops running 1 Radiation fin thermistor 2 Thermistor located in PCB circuit 3 Heat sink thermistor Error Decision Conditions When the resistance of the thermistor comes to a value equivalent to ope...

Page 271: ...ermistor normal The insulation resistance of the relevant inverter compressor is not more than 100 k The insulation resistance of the relevant fan motor is not more than 1 M Turn ON the power supply D...

Page 272: ...pped with 2 compressors Check for the compressor 1 or 2 applicable to the error code PJ while in monitor mode of the outdoor unit PCB Is the type of the inverter PCB correct Is the type of the fan PCB...

Page 273: ...value by using pressure gauge in operation 2 Compare the actual measurement value by pressure sensor with the value by the pressure gauge To gain actual measurement value by pressure sensor measure th...

Page 274: ...Supposed Causes Power supply reverse phase T phase open phase Defective outdoor unit PCB Troubleshooting There is an open phase at the power supply T phase terminal section X1M of the outdoor unit Op...

Page 275: ...capacitor of the main circuit in the inverter PCB Error Decision Conditions When the voltage in the DC circuit between diode module and power module falls below specified voltage Supposed Causes Abno...

Page 276: ...120TA M1C RXYQ144 168TA M1C M2C Check for power supply conditions 1 Power supply voltage falls within the standard range 2 Any open phase in the power supply wiring or any wrong wiring 3 Imbalance in...

Page 277: ...supply and then press the ON button Replace the inverter PCB 1 If the inverter PCB gets severely damaged the compressor and the fan motor may have been damaged Replace the inverter PCB 1 If the inver...

Page 278: ...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 tes...

Page 279: ...e outdoor unit PCB Troubleshooting Do all indoor unit remote controllers in the same refrigerant system display U4 Are the indoor outdoor and outdoor outdoor transmission wirings normal Has the indoor...

Page 280: ...V Does the microcomputer normal monitor indication lamp HAP on the outdoor unit PCB blink Disconnect the outdoor outdoor transmission wiring Does the system normally operate with a single transmissio...

Page 281: ...cording to relevant error codes NO YES Check controller indoor units 1 Some error about thermistor or fan motor electronic expansion valve or defective PCB 2 Test operation was interrupted by button B...

Page 282: ...roller PCB Transmission error caused by noise Troubleshooting Using 2 remote controllers control SS1 of both remote controllers is set to MAIN All indoor unit PCB microcomputer monitors blink Operatio...

Page 283: ...itions 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 outdoor...

Page 284: ...or 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 Sub code Error code Sub code Go to Diagnosis Flowchart...

Page 285: ...door unit Diagnosis Flow 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 operation moni...

Page 286: ...the 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...

Page 287: ...ion wirings to multi slave 1 have caused wiring disconnection in them or are being disconnected Modify the outdoor unit multi transmission wirings and then reset the power supply Replace the outdoor u...

Page 288: ...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 supply One of outdoor unit multi...

Page 289: ...r a certain amount of time Supposed Causes Transmission error between main and sub remote controller Connection between sub remote controllers Defective remote controller PCB Troubleshooting SS1 of bo...

Page 290: ...and outdoor units Defective electronic expansion valve of other indoor unit Defective indoor unit PCB of other indoor unit Improper connection of transmission wiring between indoor and outdoor unit Tr...

Page 291: ...occurs in data by the type of refrigerant between indoor and outdoor units The number of indoor units connected is out of the allowable range Error Decision Conditions The error decision is made as so...

Page 292: ...onnectors or parts may be damaged Go to Diagnosis Flow 1 Connection of excess indoor units Go to Diagnosis Flow 2 Connection of incorrect models of indoor units Go to Diagnosis Flow 3 Improper combina...

Page 293: ...1P Refer to Incorrect electric heater capacity setting troubleshooting 1 Excess indoor units are connected Check for the connection to connect the proper number of indoor units NO Diagnosis Flowchart...

Page 294: ...e outdoor unit main PCB A1P Check for the model of outdoor unit Make setting again and then reset the power supply Replace the spare PCB NO YES Replace the outdoor unit main PCB A1P Was the outdoor un...

Page 295: ...O Correct the multi combination of outdoor units Diagnosis Flowchart 5 Is the multi combination of outdoor units proper NO Was the outdoor unit PCB replaced with a spare PCB Replace the outdoor unit m...

Page 296: ...pplicable 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 condition...

Page 297: ...t 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 cont...

Page 298: ...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 Causes Transmission...

Page 299: ...ndoor 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 transmissio...

Page 300: ...oltage between the terminals F1 and F2 in the range of 15 2 to 17 6 VDC Replace the centralized controller Centralized controller Normal OK Correct the wiring NG A NO Correct the wiring NG YES YES Dis...

Page 301: ...ansmission 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 out...

Page 302: ...ls All outdoor unit models Method of Error Detection Detect an indoor unit with no auto address setting Error Decision Conditions The error decision is made as soon as the abnormality aforementioned i...

Page 303: ...m Disconnect the outdoor outdoor unit transmission wiring to create the one system status and then check whether or not the system is normal NO YES YES After fixing incorrect wiring press and hold the...

Page 304: ...xingofnon condensablegas Decreased airflow rate Decreased fan output Defective fan motor Defective outdoor unit main PCB Including capacity setting High airflow passage resistance Dirty filter Obstacl...

Page 305: ...frigerant Degradation in condensing capacity Refrigerant shortage Moisture choke Dirty evaporator Decreased airflow rate Decreased fan output Defective fan motor Can the fan motor be rotated with hand...

Page 306: ...outdoor unit main PCB Defective valve coil Defective low pressure sensor Defective subcooling heat exchanger outlet thermistor Defective valve body Defective subcooling electronic expansion valve con...

Page 307: ...rheated degree 10 C 50 F and over 2 Discharge gas superheated degree 45 C 113 F and over except immediately after compressor starts up or is running under drooping control Use the above values as a gu...

Page 308: ...g the digital type of multimeter make measurement in diode check mode No Measuring point Judgement Criteria Remarks No Measuring point Judgement Criteria Remarks 1 P2 U 2 15 k 1 P2 U 1 2 V and more Du...

Page 309: ...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 compress...

Page 310: ...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 311: ...iod 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 have been caused 3...

Page 312: ...Discharge pipe H R3T Accumulator inlet A R4T Heat exchanger liquid pipe A R5T Subcooling heat exchanger liquid pipe A R6T Subcooling heat exchanger gas pipe A R7T Hear exchanger deicer A RXYQ96 120TA...

Page 313: ...31 44 31 4796 31 51 31 41 20 68 24 95 25 0060 25 02 24 98 25 77 19 94 20 0000 20 00 20 00 30 86 16 04 16 1008 16 10 16 12 35 95 12 99 13 0426 13 04 13 07 40 104 10 58 10 6281 10 63 10 67 45 113 8 669...

Page 314: ...0683 12 64 130 0697 13 1222 40 104 10 6490 10 30 106 1517 10 7042 45 113 8 7269 8 439 87 0725 8 7834 50 122 7 1905 6 954 71 7703 7 2479 55 131 5 9524 5 761 59 4735 6 0131 60 140 4 9536 4 797 49 5180...

Page 315: ...3 3 5 4 VDC 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...

Page 316: ...ecking indoor outdoor unit transmission wiring for broken wires for checking the indoor outdoor unit transmission wiring of the Outdoor Unit C for broken wires Turn OFF the power supply to all equipme...

Page 317: ...power supply 2 Measure the resistance between Vcc and each phase of U V W and GND and each phase at the motor side connectors 5 core wire to check that the values are balanced within the range of 20 w...

Page 318: ...judge the condition The normal products will show the following conditions 1 No continuity between 1 and 2 2 Resistance value between 1 and 3 is approx 300 3 Resistance value between 1 and 5 is appro...

Page 319: ...SiUS341615E Appendix 306 Part 7 Appendix 1 Wiring Diagrams 307 1 1 Outdoor Unit 307 1 2 Indoor Unit 313 1 3 Air Treatment Equipment 320...

Page 320: ...Wiring Diagrams SiUS341615E 307 Appendix 1 Wiring Diagrams 1 1 Outdoor Unit RXYQ72TAYDU 3D106438A...

Page 321: ...SiUS341615E Wiring Diagrams Appendix 308 RXYQ96 120TAYDU 2D106439A...

Page 322: ...Wiring Diagrams SiUS341615E 309 Appendix RXYQ144 168TAYDU 2D106440A...

Page 323: ...SiUS341615E Wiring Diagrams Appendix 310 RXYQ72TATJU 3D106435A...

Page 324: ...Wiring Diagrams SiUS341615E 311 Appendix RXYQ96 120TATJU 2D106436A...

Page 325: ...SiUS341615E Wiring Diagrams Appendix 312 RXYQ144 168TATJU 2D106437A...

Page 326: ...OR FOR WIRING TO TERMINAL BLOCK X2M OF INDOOR UNIT DIRECTORY 6 X8A X33A X35A X36A ARE CONNECTED WHEN THE OPTIONAL ACCESSORIES ARE BEING USED IN CASE OF USING A SELF CLEAN PANEL SEE THE WIRING DIAGRAM...

Page 327: ...OFF CONTROL OPERATION CAN BE SELECTED BY REMOTE CONTROLLER IN DETAILS REFER TO THE INSTALLATION MANUAL ATTACHED TO THE UNIT 5 SYMBOLS SHOW AS FOLLOWS RED RED BLK BLACK WHT WHITE YLW YELLOW PNK PINK OR...

Page 328: ...R DRAIN PUMP THERMAL PROTECTOR M1F EMBEDDED THERMISTOR AIR THERMISTOR COIL 1 THERMISTOR COIL 2 FLOAT SWITCH TRANSFORMER 208 230V 25V PHASE CONTROL CIRCUIT TERMINAL BLOCK TERMINAL BLOCK ELECTRONIC EXPA...

Page 329: ...54PBVJU INPUT FROM OUTSIDE NOTE 3 A 1 P A 3 P Z 1 C t t t t GRN YLW POWER SUPPLY 1 208 230V 60Hz FOR FXMQ15 18 24 30 36 48 54PBVJU TO X70A A1P TO X1M NOTE 6 FOR FXMQ07 09 12PBVJU TO X1M MS 3 M 1 TRANS...

Page 330: ...OR WIRELESS REMOTE CONTROLLER 3D048116B R1T R2T R3T GRN YLW GRN A2P A3P SS1 H1P t t t A1P X2A BS1 H2P H3P SS2 X14A X18A X19A H4P X27A NE V1R RED C5 L1 X1A X1A Z1F PS F1U WHT PNK L2 T2 INPUT FROM OUTSI...

Page 331: ...EMOTE 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 OFF CONTROL OPERATION CAN BE SELECTED BY REM...

Page 332: ...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 K3R...

Page 333: ...SiUS341615E Wiring Diagrams Appendix 320 1 3 Air Treatment Equipment 1 3 1 Outdoor air Processing Unit FXMQ48 72 96MFVJU 3D065426D...

Page 334: ...Wiring Diagrams SiUS341615E 321 Appendix 1 3 2 Energy Recovery Ventilator VAM Series VAM300 470 600GVJU 3D073269C...

Page 335: ...SiUS341615E Wiring Diagrams Appendix 322 VAM1200GVJU 3D073270C...

Page 336: ...Revision History Month Year Version Revised contents 02 2017 SiUS341615E First edition...

Page 337: ...nauthorized parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion z Read the user s manual carefully bef...

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