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Daikin R-410A Service Manual

Vrv ii-sr-410a heat pump 50hz.
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SiBE39-402A
Service
Manual
R-410A Heat Pump 50Hz

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Troubleshooting

   Summary of Contents for Daikin R-410A

  • Page 1

    SiBE39-402A Service Manual R-410A Heat Pump 50Hz...

  • Page 2: Part 1 General Information, Part 2 Specifications, Part 3 List Of Electrical And Functional Parts

    SiBE39-402A R410A Heat Pump 50Hz 1. Introduction .................... vi 1.1 Safety Cautions ..................vi Part 1 General Information ............1 1. Model Names of Indoor/Outdoor Units............2 2. External Appearance................3 2.1 Indoor Units ....................3 3. Capacity Range..................4 Part 2 Specifications ..............5 1.

  • Page 3: Table Of Contents

    SiBE39-402A 4.3 Discharge Pipe Protection Control ............53 4.4 Inverter Protection Control ..............54 5. Other Control..................55 5.1 Demand Operation .................55 5.2 Heating Operation Prohibition ..............55 6. Outline of Control (Indoor Unit) .............56 6.1 Drain Pump Control................56 6.2 Louver Control for Preventing Ceiling Dirt..........58 6.3 Thermostat Sensor in Remote Controller..........59 6.4 Freeze Prevention ..................61 6.5 View of Operations of Swing Flaps ............62...

  • Page 4

    SiBE39-402A 4.18 “E7” Malfunction of Outdoor Unit Fan Motor..........130 4.19 “E9” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve132 4.20 “F3” Outdoor Unit: Abnormal Discharge Pipe Temperature ....134 4.21 “H9” Outdoor Unit: Malfunction of Thermistor for Outdoor Air (R1T)..135 4.22 “J3”...

  • Page 5

    SiBE39-402A 6.3 Display “Under Host Computer Integrate Control” Blinks (Repeats Double Blink) ................177 7. Troubleshooting (OP: Schedule Timer)..........178 7.1 “UE” Malfunction of Transmission between Central Remote Controller and Indoor Unit..................178 7.2 “M1” PC Board Defect ................180 7.3 “M8” Malfunction of Transmission between Optional Controllers for Centralized Control................181 7.4 “MA”...

  • Page 6: Safety Cautions

    Introduction SiBE39-402A 1. Introduction Safety Cautions ! Be sure to read the following safety cautions before conducting repair work. Cautions and ! The caution items are classified into “ Warnings Warning” and “ Caution”. The “ Warning” items are especially important since they can lead to death or serious injury if they are not followed closely.

  • Page 7

    SiBE39-402A Introduction Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.

  • Page 8

    Introduction SiBE39-402A Warning Be sure to use the specified cable to connect between the indoor and outdoor units. Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals. Improper connections can cause excessive heat generation or fire.

  • Page 9

    SiBE39-402A Introduction Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it.

  • Page 10

    Introduction SiBE39-402A...

  • Page 11

    SiBE39-402A Part 1 General Information 1. Model Names of Indoor/Outdoor Units............2 2. External Appearance................3 2.1 Indoor Units ....................3 3. Capacity Range..................4 General Information...

  • Page 12: Model Names Of Indoor/outdoor Units

    Model Names of Indoor/Outdoor Units SiBE39-402A 1. Model Names of Indoor/Outdoor Units Indoor Units Power Type Model Name Supply Ceiling mounted FXCQ 20M7 25M7 32M7 40M7 50M7 63M7 80M7 — 125M7 cassette type (Double flow) Ceiling mounted cassette type FXZQ —...

  • Page 13: External Appearance

    SiBE39-402A External Appearance 2. External Appearance Indoor Units Ceiling mounted cassette type (Double flow) Ceiling mounted duct type FXCQ20M7 FXMQ40M FXCQ25M7 FXMQ50M FXCQ32M7 FXMQ63M FXCQ40M7 FXMQ80M FXCQ50M7 FXMQ100M FXCQ63M7 FXMQ125M FXCQ80M7 FXCQ125M7 Ceiling mounted cassette type Ceiling suspended type (Multi flow) 600×600 FXHQ32M FXZQ20M...

  • Page 14: Capacity Range

    Capacity Range SiBE39-402A 3. Capacity Range Outdoor Units Capacity Range RXYSQ No of Indoor Units to be Connected Total Capacity Index of Indoor 50~130 62.5~162.5 70~182 Units to be Connected Indoor Units 1.25 Capacity Range Capacity Index 31.25 62.5 Ceiling Mounted Cassette Type FXCQ 20M7...

  • Page 15

    SiBE39-402A Part 2 Specifications 1. Specifications ..................6 1.1 Outdoor Units ...................6 1.2 Indoor Units ....................8 Specifications...

  • Page 16: Specifications

    Specifications SiBE39-402A 1. Specifications Outdoor Units Model Name RXYSQ4M7V3B RXYSQ5M7V3B kcal / h 9,600 12,000 H1 Cooling Capacity Btu / h 38,200 47,700 11.2 14.0 kcal / h 10,700 13,700 H2 Heating Capacity Btu / h 42,600 54,600 12.5 16.0 Casing Color Ivory White Ivory White...

  • Page 17

    SiBE39-402A Specifications Model Name RXYSQ6M7V3B kcal / h 13,300 H1 Cooling Capacity Btu / h 52,900 15.5 kcal / h 15,400 H2 Heating Capacity Btu / h 61,400 18.0 Casing Color Ivory White Dimensions: (H×W×D) 1,345×900×320 Heat Exchanger Cross Fin Coil Type Hermetically Sealed Scroll Type Piston Displacement...

  • Page 18: Indoor Units

    Specifications SiBE39-402A Indoor Units Ceiling Mounted Cassette Type (Multi Flow) 600×600 Model FXZQ20MVE FXZQ25MVE FXZQ32MVE kcal/h 2,000 2,500 3,150 H1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 H2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 H3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing...

  • Page 19

    SiBE39-402A Specifications Ceiling Mounted Cassette Type (Multi Flow) 600×600 Model FXZQ40MVE FXZQ50MVE kcal/h 4,000 5,000 H1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 H2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 H3 Heating Capacity Btu/h 17,000 21,500 Casing Galvanized Steel Plate Galvanized Steel Plate 260 (286)×575×575 260 (286)×575×575 Dimensions: (H×W×D)

  • Page 20

    Specifications SiBE39-402A Ceiling Mounted Cassette Corner Type Model FXKQ25MVE FXKQ32MVE FXKQ40MVE FXKQ63MVE kcal/h 2,500 3,150 4,000 6,300 H1 Cooling Capacity (19.5°CWB) Btu/h 9,900 12,500 15,900 25,000 H2 Cooling Capacity (19.0°CWB) kcal/h 2,800 3,400 4,300 6,900 H3 Heating Capacity Btu/h 10,900 13,600 17,000 27,300...

  • Page 21

    SiBE39-402A Specifications Slim Ceiling Mounted Built-in Type Model FXDQ20NVE FXDQ25NVE FXDQ32NVE kcal/h 2,000 2,500 3,150 H1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 H2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 H3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate Dimensions: (H×W×D)

  • Page 22

    Specifications SiBE39-402A Slim Ceiling Mounted Built-in Type Model FXDQ40NVE FXDQ50NVE FXDQ63NVE kcal/h 4,000 5,000 6,300 H1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 H2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 H3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Color Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate...

  • Page 23

    SiBE39-402A Specifications Ceiling Mounted Duct Type Model FXMQ40MVE FXMQ50MVE FXMQ63MVE kcal/h 4,000 5,000 6,300 H1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 H2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 H3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate Dimensions: (H×W×D)

  • Page 24

    Specifications SiBE39-402A Ceiling Mounted Duct Type Model FXMQ80MVE FXMQ100MVE FXMQ125MVE kcal/h 8,000 10,000 12,500 H1 Cooling Capacity (19.5°CWB) Btu/h 31,800 39,700 49,600 11.6 14.5 H2 Cooling Capacity (19.0°CWB) 11.2 14.0 kcal/h 8,600 10,800 13,800 H3 Heating Capacity Btu/h 34,100 42,700 54,600 10.0 12.5...

  • Page 25: Ceiling Suspended Type

    SiBE39-402A Specifications Ceiling Suspended Type Model FXHQ32MVE FXHQ63MVE FXHQ100MVE kcal/h 3,150 6,300 10,000 H1 Cooling Capacity (19.5°CWB) Btu/h 12,500 25,000 39,700 11.6 H2 Cooling Capacity (19.0°CWB) 11.2 kcal/h 3,400 6,900 10,800 H3 Heating Capacity Btu/h 13,600 27,300 42,700 12.5 Casing Color White (10Y9/0.5) White (10Y9/0.5) White (10Y9/0.5)

  • Page 26

    Specifications SiBE39-402A Wall Mounted Type Model FXAQ20MVE FXAQ25MVE FXAQ32MVE kcal/h 2,000 2,500 3,150 H1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 H2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 H3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color White (10Y9/0.5) White (10Y9/0.5) White (10Y9/0.5) Dimensions: (H×W×D)

  • Page 27

    SiBE39-402A Specifications Wall Mounted Type Model FXAQ40MVE FXAQ50MVE FXAQ63MVE kcal/h 4,000 5,000 6,300 H1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 H2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 H3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Color White (B-272) White (B-272) White (B-272) Dimensions: (H×W×D)

  • Page 28: Floor Standing Type

    Specifications SiBE39-402A Floor Standing Type Model FXLQ20MVE FXLQ25MVE FXLQ32MVE kcal/h 2,000 2,500 3,150 H1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 H2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 H3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Dimensions: (H×W×D)

  • Page 29

    SiBE39-402A Specifications Floor Standing Type Model FXLQ40MVE FXLQ50MVE FXLQ63MVE kcal/h 4,000 5,000 6,300 H1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 H2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 H3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Color Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Dimensions: (H×W×D)

  • Page 30

    Specifications SiBE39-402A Concealed Floor Standing Type Model FXNQ20MVE FXNQ25MVE FXNQ32MVE kcal/h 2,000 2,500 3,150 H1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 H2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 H3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate Dimensions: (H×W×D)

  • Page 31

    SiBE39-402A Specifications Concealed Floor Standing Type Model FXNQ40MVE FXNQ50MVE FXNQ63MVE kcal/h 4,000 5,000 6,300 H1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 H2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 H3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Color Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate Dimensions: (H×W×D)

  • Page 32

    Specifications SiBE39-402A Wall Mounted Type Model FXAQ20MHV1 FXAQ25MHV1 FXAQ32MHV1 kcal/h 2,000 2,500 3,150 H1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 H2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 H3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color White (3.0Y8.5/0.5) White (3.0Y8.5/0.5) White (3.0Y8.5/0.5) Dimensions: (H×W×D)

  • Page 33

    SiBE39-402A Specifications Wall Mounted Type Model FXAQ40MHV1 FXAQ50MHV1 kcal/h 4,000 5,000 H1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 H2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 H3 Heating Capacity Btu/h 17,000 21,500 Casing Color White (3.0Y8.5/0.5) White (3.0Y8.5/0.5) Dimensions: (H×W×D) 290×1,050×230 290×1,050×230 Rows×Stages×Fin Pitch 2×14×1.4...

  • Page 34

    Specifications SiBE39-402A Floor Standing Type Model FXLQ20MHV1 FXLQ25MHV1 FXLQ32MHV1 kcal/h 2,000 2,500 3,150 H1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 H2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 H3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Dimensions: (H×W×D)

  • Page 35

    SiBE39-402A Specifications Floor Standing Type Model FXLQ40MHV1 FXLQ50MHV1 kcal/h 4,000 5,000 H1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 H2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 H3 Heating Capacity Btu/h 17,000 21,500 Casing Color Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Dimensions: (H×W×D) 600×1,140×222 600×1,420×222 Rows×Stages×Fin Pitch...

  • Page 36

    Specifications SiBE39-402A Specifications...

  • Page 37

    SiBE39-402A Part 3 List of Electrical and Functional Parts 1. List of Electrical and Functional Parts ...........28 1.1 Outdoor Unit ...................28 1.2 Indoor Unit....................29 List of Electrical and Functional Parts...

  • Page 38: List Of Electrical And Functional Parts

    List of Electrical and Functional Parts SiBE39-402A 1. List of Electrical and Functional Parts Outdoor Unit Model Remark Item Name Symbol (PCB terminal) Type JT100FCVD@4 Inverter — 3.2kW Compressor Output Crankcase heater (INV) E1HC A1P X6A Motor M1F·M2F 0.07kW — Fan motor Over-current relay —...

  • Page 39: Indoor Unit

    SiBE39-402A List of Electrical and Functional Parts Indoor Unit Model Parts Name Symbol Remark FXZQ FXZQ FXZQ FXZQ FXZQ 20MVE 25MVE 32MVE 40MVE 50MVE Wired Remote BRC1A61 Controller Remote Option Controller Wireless Remote BRC7E530W Controller AC 220~240V 50Hz Fan Motor 1φ55W 4P Thermal Fuse 135°C Capacitor, fan motor...

  • Page 40

    List of Electrical and Functional Parts SiBE39-402A Model Parts Name Symbol Remark FXDQ FXDQ FXDQ FXDQ FXDQ FXDQ 20NVE 25NVE 32NVE 40NVE 50NVE 63NVE Wired Remote BRC1A62, BRC1D527 Option Controller Remote Controller Wireless Remote BRC4C62 Option Controller AC220~240V/220V 50/60Hz 1 φ62W 1 φ130W Fan Motor Motors...

  • Page 41

    SiBE39-402A List of Electrical and Functional Parts Model Parts Name Symbol Remark FXAQ FXAQ FXAQ FXAQ FXAQ FXAQ 20MVE 25MVE 32MVE 40MVE 50MVE 63MVE Wired Remote BRC1A61 Option Controller Remote Controller Wireless Remote BRC7E618 Option Controller AC 220~240V 50Hz Fan Motor 1φ40W 1φ43W Motors...

  • Page 42

    List of Electrical and Functional Parts SiBE39-402A Model Parts Name Symbol Remark FXAQ FXAQ FXAQ FXAQ FXAQ 20MH 25MH 32MH 40MH 50MH Wired Remote BRC1A61 Option Controller Remote Controller Wireless Remote BRC7E618 Option Controller AC 220~240V 50Hz Fan Motor 1φ40W 1φ43W Motors Thermal protector 130°C : OFF...

  • Page 43

    SiBE39-402A Part 4 Refrigerant Circuit 1. Refrigerant Circuit .................34 1.1 RXYSQ4·5·6M..................34 2. Functional Parts Layout ................36 2.1 RXYSQ4·5·6M..................36 Refrigerant Circuit...

  • Page 44: Refrigerant Circuit

    Refrigerant Circuit SiBE39-402A 1. Refrigerant Circuit RXYSQ4·5·6M No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 52 Hz and 210 Hz by using Inverter compressor (INV) the inverter. 20 steps Since the system is of air heat exchanging type, the fan is operated at 8-step rotation Inverter fan speed by using the inverter.

  • Page 45

    SiBE39-402A Refrigerant Circuit C : 3D043711 Refrigerant Circuit...

  • Page 46: Functional Parts Layout

    Functional Parts Layout SiBE39-402A 2. Functional Parts Layout RXYSQ4·5·6M Birds-eye view Solenoid valve (Connector color : PINK) S1NPH High pressure sensor (Connector color : RED) S1NPH High pressure sensor lead wire (Connector color : RED) (Low voltage) Four way valve coil Electronic expansion valve S1NPL Low pressure sensor...

  • Page 47: Part 5 Function

    SiBE39-402A Part 5 Function 1. Operation Mode ..................38 2. Basic Control..................39 2.1 Normal Operation ...................39 2.2 Compressor PI Control................40 2.3 Electronic Expansion Valve PI Control...........41 2.4 Cooling Operation Fan Control...............42 3. Special Control..................43 3.1 Startup Control ..................43 3.2 Oil Return Operation ................44 3.3 Defrosting Operation ................46 3.4 Pump-down Residual Operation ............47 3.5 Restart Standby..................48...

  • Page 48: Operation Mode

    Operation Mode SiBE39-402A 1. Operation Mode Operation in stop mode Indoor unit stop or Indoor unit thermostat ON thermostat OFF Malfunction/Standby Restart standby Pressure (Compressor stop) equalization prior to startup Malfunction/ Standby Indoor unit stop or thermostat OFF Startup control •...

  • Page 49: Basic Control, Normal Operation

    SiBE39-402A Basic Control 2. Basic Control Normal Operation ! Cooling Operation Actuator Operation Remarks Used for high pressure protection control, low pressure protection control, discharge pipe Compressor Compressor PI control temperature protection control, and compressor operating frequency upper limit control with inverter protection control.

  • Page 50: Compressor Pi Control

    Basic Control SiBE39-402A Compressor PI Control Compressor PI Control Carries out the compressor capacity PI control to maintain Te at constant during cooling operation and Tc at constant during heating operation to ensure stable unit performance. [Cooling operation] Controls compressor capacity to adjust Te to Te : Low pressure equivalent saturation temperature achieve target value (TeS).

  • Page 51: Electronic Expansion Valve Pi Control

    SiBE39-402A Basic Control Electronic Expansion Valve PI Control Main Electronic Expansion Valve EV1 Control Carries out the electronic expansion valve (Y1E) PI control to maintain the evaporator outlet superheated degree (SH) at constant during heating operation to make maximum use of the outdoor unit heat exchanger (evaporator).

  • Page 52: Cooling Operation Fan Control

    Basic Control SiBE39-402A Cooling Operation Fan Control In cooling operation with low outdoor air temperature, this control is used to provide the adequate amount of circulation air with liquid pressure secured by high pressure control using outdoor unit fan. Pc>3.1MPa Pc: HP pressure sensor detection value STEP8 Pc<1.8MPa...

  • Page 53: Special Control, Startup Control

    SiBE39-402A Special Control 3. Special Control Startup Control On activation, following control is performed to lighten load of the compressor by back liquid and the like. Also, the position of the four way valve is defined. 3.1.1 Startup Control in Cooling Operation Actuator Operation Remarks...

  • Page 54: Oil Return Operation

    Special Control SiBE39-402A Oil Return Operation Oil flown from the compressor to the side of system is collected by oil-returning operation, in case of that oil in the compressor runs down. 3.2.1 Oil Return Operation in Cooling Operation [Conditions to start] The cooling oil-returning operation is started referring following conditions.

  • Page 55

    SiBE39-402A Special Control 3.2.2 Oil Return Operation in Heating Operation [Conditions to start] The heating oil-returning operation is started referring following conditions. ! Integrated amount of displaced oil ! Timer (After the power is turned on, integrated operating-time is 2 hours and subsequently every 8 hours.) In addition, integrated amount of displaced oil is derived from Tc, Te, and the compressor load.

  • Page 56: Defrosting Operation

    Special Control SiBE39-402A Defrosting Operation The defrost operation is performed to solve frost on the outdoor unit heat exchanger when heating, and the heating capacity is recovered. [Conditions to start] The defrost operation is started referring following conditions. ! Outdoor heat exchanger heat transfer co-efficiency ! Temperature of heat-exchange (Tb) ! Timer (2 hours at the minimum) In addition, outdoor heat-exchange co-efficiency is derived from Tc, Te, and the compressor...

  • Page 57: Pump-down Residual Operation

    SiBE39-402A Special Control Pump-down Residual Operation When activating compressor, if the liquid refrigerant remains in the heat-exchanger, the liquid enters into the compressor and dilutes oil therein resulting in decrease of lubricity. Therefore, the pump-down residual operation is performed to collect the refrigerant in the heat- exchanger when the compressor is down.

  • Page 58: Restart Standby

    Special Control SiBE39-402A Restart Standby Restart is stood by force to prevent frequent power-on/off and to equalize pressure in the refrigerant system. Actuator Operation Remarks ⎯ Compressor Ta>30°C: STEP4 ⎯ Outdoor unit fan Ta≤30°C: OFF ⎯ Four way valve Keep former condition. ⎯...

  • Page 59: Stopping Operation

    SiBE39-402A Special Control Stopping Operation Operation of the actuator when the system is down, is cleared up. 3.6.1 When System is in Stop Mode Actuator Operation Compressor Outdoor unit fan Four way valve Keep former condition. Main electronic expansion valve (EV1) 0 pls Subcooling electronic expansion valve (EV2) 0 pls...

  • Page 60: Pressure Equalization Prior To Startup

    Special Control SiBE39-402A Pressure Equalization Prior to Startup Before activating the compressor, the activation load is lightened by equalization across the compressor. In addition, inverters turn on electricity and capacitors are charged. Actuator Operation Remarks ⎯ Compressor ⎯ Cooling:OFF Outdoor unit fan Heating:Ta>26°C;...

  • Page 61: Protection Control, High Pressure Protection Control

    SiBE39-402A Protection Control 4. Protection Control High Pressure Protection Control This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure. [In cooling operation] Pc >...

  • Page 62: Low Pressure Protection Control

    Protection Control SiBE39-402A Low Pressure Protection Control This low pressure protection control is used to protect compressors against the transient decrease of low pressure. [In cooling operation] Low pressure not limited Pe: LP pressure sensor detection value < 0.25MPa > 0.4MPa Low pressure limited...

  • Page 63: Discharge Pipe Protection Control

    SiBE39-402A Protection Control Discharge Pipe Protection Control This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature. [INV compressor] HTdi: Value of INV compressor discharge pipe temperature (Tdi) compensated with outdoor air temperature Value of compressor port temperature calculated by Tc and Te, and suction...

  • Page 64: Inverter Protection Control

    Protection Control SiBE39-402A Inverter Protection Control Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase. [Inverter overcurrent protection control] Not limited • Inverter current ≤ 23.8A &...

  • Page 65: Other Control, Demand Operation, Heating Operation Prohibition

    SiBE39-402A Other Control 5. Other Control Demand Operation In order to save the power consumption, the capacity of outdoor unit is saved with control forcibly by using “Demand 1 Setting” or “Demand 2 Setting”. To operate the unit with this mode, additional setting of “Continuous Demand Setting” or external input by external control adaptor is required.

  • Page 66: Outline Of Control (indoor Unit), Outline Of Control (indoor Unit), Drain Pump Control

    Outline of Control (Indoor Unit) SiBE39-402A 6. Outline of Control (Indoor Unit) Drain Pump Control 1. The drain pump is controlled by the ON/OFF buttons (4 button (1) - (4) given in the figure below). 6.1.1 When the Float Switch is Tripped While the Cooling Thermostat is Remote control “A3”...

  • Page 67: Remote Controller

    SiBE39-402A Outline of Control (Indoor Unit) 6.1.3 When the Float Switch is Tripped During Heating Operation: Remote control “A3” flashing malfunction stop Thermostat (running) Humidifier Reset Float switch Drain pump 5 min. 5 sec. 5 min. During heating operation, if the float switch is not reset even after the 5 minutes operation, 5 seconds stop, 5 minutes operation cycle ends, operation continues until the switch is reset.

  • Page 68: Louver Control For Preventing Ceiling Dirt

    Outline of Control (Indoor Unit) SiBE39-402A Louver Control for Preventing Ceiling Dirt We have added a control feature that allows you to select the range of in which air direction can be adjusted in order to prevent the ceiling surrounding the air discharge outlet of ceiling mounted cassette type units from being soiled.

  • Page 69: Thermostat Sensor In Remote Controller

    SiBE39-402A Outline of Control (Indoor Unit) Thermostat Sensor in Remote Controller Temperature is controlled by both the thermostat sensor in remote controller and air suction thermostat in the indoor unit. (This is however limited to when the field setting for the thermostat sensor in remote controller is set to “Use.”) Note: When OA (outdoor air) is introduced to the air-conditioner with mixed into indoor air, the room...

  • Page 70

    Outline of Control (Indoor Unit) SiBE39-402A Heating When heating, the hot air rises to the top of the room, resulting in the temperature being lower near the floor where the occupants are. When controlling by body thermostat sensor only, the unit may therefore be turned off by the thermostat before the lower part of the room reaches the preset temperature.

  • Page 71: Freeze Prevention

    SiBE39-402A Outline of Control (Indoor Unit) Freeze Prevention Freeze When the temperature detected by liquid pipe temperature thermistor (R2T) of the indoor unit Prevention by Off heat exchanger drops too low, the unit enters freeze prevention operation in accordance with the following conditions, and is also set in accordance with the conditions given below.

  • Page 72: View Of Operations Of Swing Flaps

    Outline of Control (Indoor Unit) SiBE39-402A View of Operations of Swing Flaps Swing flaps work as following. Flap control FXCQ FXFQ FXKQ FXAQ FXHQ Swinging Level Level Level Hot-start from defrosting Setting the wind direction Level Level Level Swinging Level Level Level Defrosting...

  • Page 73

    SiBE39-402A Part 6 Test Operation 1. Test Operation ..................64 1.1 Procedure and Outline ................64 1.2 Operation When Power is Turned On ............67 2. Outdoor Unit PC Board Layout .............68 3. Field Setting ..................69 3.1 Field Setting from Remote Controller .............69 3.2 Field Setting from Outdoor Unit..............81 3.3 Detail of Setting Mode ................87 Test Operation...

  • Page 74: Test Operation, Procedure And Outline

    Test Operation SiBE39-402A 1. Test Operation Procedure and Outline Follow the following procedure to conduct the initial test operation after installation. 1.1.1 Check work prior to turn power supply on Is the power supply single-phase 220-230V / 50Hz? Check the below items. Have you finished a ductwork to drain? 2Power wiring Have you detach transport fitting?

  • Page 75: Check Operation

    Test Operation SiBE39-402A 1.1.3 Check Operation * During check operation, mount front panel to avoid the misjudging. * Check operation is mandatory for normal unit operation. (When the check operation is not executed, alarm code "U3" will be displayed.) Press and hold the TEST ⎧...

  • Page 76

    Test Operation SiBE39-402A 1.1.4 Confirmation on Normal Operation • Conduct normal unit operation after the check operation has been completed. (When outdoor air temperature is 30°CDB or higher, the unit can not be operated with heating mode. See the installation manual attached.) •...

  • Page 77: Operation When Power Is Turned On

    Test Operation SiBE39-402A Operation When Power is Turned On 1.2.1 When Turning On Power First Time The unit cannot be run for up to 12 minutes to automatically set the master power and address (indoor-outdoor address, etc.). Status Outdoor unit Test lamp H2P ..

  • Page 78: Outdoor Unit Pc Board Layout

    Outdoor Unit PC Board Layout SiBE39-402A 2. Outdoor Unit PC Board Layout Outdoor unit PC board (2) Set mode display (LED) H1P H2P H3P H4P H5P H6P H7P (3) Mode setting switch MODE RETURN TEST RESET (1) Microcomputer normal monitor 1 2 3 4 1 2 3 4 (4) Local setting switch...

  • Page 79: Field Setting, Field Setting From Remote Controller

    Field Setting SiBE39-402A 3. Field Setting Field Setting from Remote Controller Individual function of indoor unit can be changed from the remote controller. At the time of installation or after service inspection / repair, make the local setting in accordance with the following description.

  • Page 80

    Field Setting SiBE39-402A 3.1.2 Wireless Remote Controller - Indoor Unit BRC7C type Mode No. Field set mode Second code No. First code No. 1. When in the normal mode, push the button for 4 seconds or more, and operation then enters the “field set mode.” 2.

  • Page 81: Simplified Remote Controller

    Field Setting SiBE39-402A 3.1.3 Simplified Remote Controller BRC2A51 Mode No. First Code No. Unit No. Second Code No. ! Group No. setting by simplified remote controller. 1. Remove the cover of remote controller. 2. While in normal mode, press the [BS6] BUTTON (field set) to enter the FIELD SET MODE. 3.

  • Page 82

    Field Setting SiBE39-402A 3.1.4 Setting Contents and Code No. – VRV Unit Mode Setting Setting Contents Second Code No.(Note 3) Switch system indoor Note 2 unit 10(20) Filter contamination heavy/ Super Light Approx. Heavy Approx. — — settings light (Setting for display long life 10,000 5,000...

  • Page 83

    Field Setting SiBE39-402A 3.1.5 Applicable Range of Field Setting Mode No. Setting Setting Contents Ceiling mounted cassette type Slim ceiling Ceiling Ceiling Switch mounted built- mounted built- mounted Double flow Multi flow Corner type in type in type built-in type FXCQ FXFQ FXKQ...

  • Page 84: Detailed Explanation Of Setting Modes

    Field Setting SiBE39-402A 3.1.6 Detailed Explanation of Setting Modes Filter Sign Setting If switching the filter sign ON time, set as given in the table below. Set Time Filter Specs. Lighting interval of the filter sign Setting (hours) Setting Mode No. Position Switch No.

  • Page 85

    Field Setting SiBE39-402A Air Flow Adjustment - Ceiling height Make the following setting according to the ceiling height. The setting position No. is set to “01” at the factory. ! In the Case of FXAQ, FXHQ Setting Switch Setting Position Mode No.

  • Page 86

    Field Setting SiBE39-402A Setting of Air Flow Direction Adjustment Range Make the following air flow direction setting according to the respective purpose. Setting Table Mode No. First Code No. Second Code No. Setting 13 (23) Upward (Draft prevention) Standard Downward (Ceiling soiling prevention) Air Flow Rate Switching at Discharge Grille for Field Air Flow Rate Switching ! In the case of FXFQ...

  • Page 87

    Field Setting SiBE39-402A 3.1.7 Centralized Control Group No. Setting ! If carrying out centralized control by central remote controller or unified ON/OFF BRC1A Type controller, group No. must be set for each group individually by remote controller. ! Group No. setting by remote controller for centralized control 1.

  • Page 88: Group No. Setting Example

    Field Setting SiBE39-402A Group No. Setting Example Indoor unit P1·P2 P1·P2 P1·P2 P1·P2 Central remote controller Unified ON/OFF controller Remote controller centralized control (automatic address) Group No. for 1-00 1-00 1-01 1-01 1-02 1-02 centralized control P1·P2 P1·P2 P1·P2 P1·P2 No remote controller Remote controller centralized control (automatic address)

  • Page 89: Contents Of Control Modes

    Field Setting SiBE39-402A 3.1.8 Setting of Operation Control Mode from Remote Controller (Local Setting) The operation control mode is compatible with a variety of controls and operations by limiting the functions of the operation remote controller. Furthermore, operations such as remote controller ON/OFF can be limited in accordance with the combination conditions.

  • Page 90

    Field Setting SiBE39-402A How to Select Whether operation by remote controller will be possible or not for turning on/off, controlling Operation Mode temperature or setting operation mode is selected and decided by the operation mode given on the right edge of the table below. Example ON by remote OFF by remote...

  • Page 91: Field Setting From Outdoor Unit

    Field Setting SiBE39-402A Field Setting from Outdoor Unit 3.2.1 Setting by dip switches The following field settings are made by dip switches on PC board. Dipswitch Setting item Description Setting Cool / Heat Used to set cool / heat change over setting by DS1-1 change over remote controller equipped with outdoor unit.

  • Page 92: Mode Changing Procedure

    Field Setting SiBE39-402A MODE RETURN TEST RESET (V2760) There are the following three setting modes. $ Setting mode 1 (H1P off) Initial status (when normal) : Also indicates during “abnormal”. % Setting mode 2 (H1P on) Used to modify the operating status and to set program addresses, etc. Usually used in servicing the system.

  • Page 93

    Field Setting SiBE39-402A a. “Setting mode 1” “Normally, “Setting mode 1” is set. In case of other status, push MODE button (BS1) one time and set to “Setting mode 1”. Display for malfunction/preparing/test-run ∗ The current state is displayed. LED display example Setting (displaying) item Normal Malfunction...

  • Page 94

    Field Setting SiBE39-402A b. “Setting mode 2” Setting item Description Indoor unit forced Allows forced operation of indoor unit fan while unit is fan H stopped. (H tap) Push and hold the MODE button (BS1) for 5 seconds and set to Indoor unit forced Allows forced operation of indoor unit.

  • Page 95

    Field Setting SiBE39-402A Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set 8777778 ∗ Normal operation Indoor forced fan H Indoor forced fan H 8777787 8777778 ∗ Normal operation Indoor forced operation Indoor forced operation 8777787...

  • Page 96

    Field Setting SiBE39-402A c. Monitor mode LED display Setting item Data display To enter the monitor mode, push the 9 7 7 7 7 7 7 Various settings See below MODE button (BS1) when in “Setting 9 7 7 7 8 7 8 Number of connected indoor units Lower 6 digits mode 1”.

  • Page 97: Detail Of Setting Mode

    Field Setting SiBE39-402A Detail of Setting Mode 3.3.1 Cool / Heat Mode Switching There are the following 2 cool/heat switching modes. $ Set cool/heat separately for each outdoor unit system by indoor unit remote controller. % Set cool/heat separately for each outdoor unit system by cool/heat switching remote controller.

  • Page 98

    Field Setting SiBE39-402A % Set Cool / Heat Separately for Each Outdoor Unit System by Cool/Heat Switching Remote Controller # It does not matter whether or not there is outdoor - outdoor unit wiring. # Set outdoor unit PC board DS1-1 to “outdoor” (factory set). # Set cool/heat switching to “individual”...

  • Page 99

    Field Setting SiBE39-402A 3.3.2 Setting of Low Noise Operation and Demand Operation Setting of Low Noise Operation By connecting the external contact input to the low noise input of the outdoor unit external control adaptor (optional), you can lower operating noise by 2-3 dB. A.

  • Page 100

    Field Setting SiBE39-402A Image of operation in the case of A If capacity precedence is set in Operation sound “Capacity precedence setting”, the fan speed will be increased according to the load of air conditioning when load is heavier. Rated operation sound Operation sound during low Low noise mode instructing...

  • Page 101

    Field Setting SiBE39-402A Setting of Demand Operation By connecting the external contact input to the demand input of the outdoor unit external control adaptor (optional), the power consumption of unit operation can be saved suppressing the compressor operating condition. A. When the demand operation is carried out by external instructions (with the use of the outdoor unit external control adaptor).

  • Page 102: Image Of Operation In The Case Of A And B

    Field Setting SiBE39-402A Image of operation in the case of A Power consumption The power Rated power consumption consumption during the 80 % of rated power consumption Demand level 1 instructing Demand level 2 instructing Demand level 3 instructing demand level 1 70 % of rated power consumption instructing can be set 60 % of rated power consumption...

  • Page 103

    Field Setting SiBE39-402A Detailed Setting Procedure of Low Noise Operation and Demand Control 1. Setting mode 1 (H1P off) $ In setting mode 2, push the BS1 (MODE button) one time. → Setting mode 2 is entered and H1P lights. During the setting mode 1 is displayed, “In low noise operation”...

  • Page 104

    Field Setting SiBE39-402A & Setting Setting Setting No. indication Setting No. indication Setting Setting contents indication (Initial setting) contents contents H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P Night-time "...

  • Page 105

    Field Setting SiBE39-402A 3.3.4 Setting of Vacuuming Mode In order to perform vacuuming operation at site, fully open the expansion valves of indoor and outdoor units to turn on some solenoid valves. Both the outdoor unit and the indoor unit are forbidden to operation. [Operating procedure] $ With Setting Mode 2 while the unit stops, set (B) Refrigerant recovery / Vacuuming mode to ON.

  • Page 106

    Field Setting SiBE39-402A Test Operation...

  • Page 107: Troubleshooting

    SiBE39-402A Part 7 Troubleshooting 1. Troubleshooting by Remote Controller ..........99 1.1 The INSPECTION / TEST Button............99 1.2 Self-Diagnosis by Wired Remote Controller.........100 1.3 Self-Diagnosis by Wireless Remote Controller ........101 1.4 Operation of the Remote Controller’s Inspection / Test Operation Button . 1.5 Remote Controller Service Mode ............104 2.

  • Page 108

    SiBE39-402A 4.31 “L9” Outdoor Unit: Inverter Start up Error..........145 4.32 “LC” Outdoor Unit: Malfunction of Transmission between Inverter and Con- trol PC Board146 4.33 “P4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor148 4.34 “PJ” Outdoor Unit: Faulty Combination of Inverter and Fan Driver ..149 4.35 “UO”...

  • Page 109: Troubleshooting By Remote Controller, The Inspection / Test Button

    Troubleshooting by Remote Controller SiBE39-402A 1. Troubleshooting by Remote Controller The INSPECTION / TEST Button The following modes can be selected by using the button on the remote control. Depress button for more than 4 seconds. Service data can be obtained. Indoor unit settings can be made Local •...

  • Page 110: Self-diagnosis By Wired Remote Controller

    Troubleshooting by Remote Controller SiBE39-402A Self-Diagnosis by Wired Remote Controller Explanation If operation stops due to malfunction, the remote controller’s operation LED blinks, and malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.) The malfunction code enables you to tell what kind of malfunction caused operation to stop.

  • Page 111: Self-diagnosis By Wireless Remote Controller

    Troubleshooting by Remote Controller SiBE39-402A Self-Diagnosis by Wireless Remote Controller In the Case of You can confirm the error code as following. BRC7C ~ Type If equipment stops due to a malfunction, the operation indicating LED on the light reception section flashes.

  • Page 112

    Troubleshooting by Remote Controller SiBE39-402A ! The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed. “UP” button “DOWN” button Troubleshooting...

  • Page 113: Operation Of The Remote Controller's Inspection / Test Operation Button

    Troubleshooting by Remote Controller SiBE39-402A Operation of the Remote Controller’s Inspection / Test Operation Button Unit Malfunction code Inspection Normal display (No display) Malfunction code blinks when a malfunction occurs. Inspection/test Push the button. operation Unit Example of capacity code display 0 7 1...

  • Page 114: Remote Controller Service Mode

    Troubleshooting by Remote Controller SiBE39-402A Remote Controller Service Mode You can take “service data” and make a “service setting” in the service mode, with operating the button on the remote controller. How to Enter the Service Mode Normal operation Field set Service mode mode...

  • Page 115

    Troubleshooting by Remote Controller SiBE39-402A Mode Function Contents and operation method Remote controller display example Malfunction Display malfunction hysteresis. hysteresis display The history No. can be changed with the Unit 1 button. Malfunction code 2-U4 Malfunction code Hystory No: 1 - 9 1: Latest (VE007) Display of sensor...

  • Page 116: List Of Malfunction Code

    List of Malfunction Code SiBE39-402A 2. List of Malfunction Code 9: Blink 8: ON 7: OFF Malfunction Operation Inspection Unit No. Malfunction contents Page code lamp display Referred Indoor Error of external protection device Unit PC board defect, E PROM defect Malfunction of drain level control system (33H) Fan motor (MF) lock, overload Malfunction of swing flap motor (MA)

  • Page 117

    List of Malfunction Code SiBE39-402A 9: Blink 8: ON 7: OFF Malfunction Operation Inspection Unit No. Malfunction contents Page code lamp display Referred Outdoor Malfunction of power unit — Unit Malfunction of transmission between inverter and control PC board Inverter over-ripple protection —...

  • Page 118: Malfunction Code Indication By Outdoor Unit Pcb

    Malfunction Code Indication by Outdoor Unit PCB SiBE39-402A 3. Malfunction Code Indication by Outdoor Unit PCB <Monitor mode> Malfunction Contents of malfunction To enter the monitor mode, push the code MODE button (BS1) when in “Setting Abnormal discharge pressure HPS activated mode 1”.

  • Page 119

    Malfunction Code Indication by Outdoor Unit PCB SiBE39-402A Malfunction Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 code LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED3 LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED1 LED2 LED4 LED5 LED6 LED7...

  • Page 120: Troubleshooting By Indication On The Remote Controller, A0" Indoor Unit: Error Of External Protection Device

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4. Troubleshooting by Indication on the Remote Controller “A0” Indoor Unit: Error of External Protection Device Remote Controller Display Applicable All indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions ! Actuation of external protection device Supposed ! Improper field set...

  • Page 121: A1" Indoor Unit: Pc Board Defect

    Troubleshooting by Indication on the Remote Controller SiBE39-402A “A1” Indoor Unit: PC Board Defect Remote Controller Display Applicable All indoor unit models Models Method of Check data from E²PROM. Malfunction Detection Malfunction When data could not be correctly received from the E²PROM Decision E²PROM : Type of nonvolatile memory.

  • Page 122

    Troubleshooting by Indication on the Remote Controller SiBE39-402A “A3” Indoor Unit: Malfunction of Drain Level Control System (33H) Remote Controller Display Applicable All indoor unit models Models Method of By float switch OFF detection Malfunction Detection Malfunction When rise of water level is not a condition and the float switch goes OFF. Decision Conditions ! 220~240V power supply is not provided...

  • Page 123

    Troubleshooting by Indication on the Remote Controller SiBE39-402A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is power supply 220~240V provided? Provide 220~240V power supply. The float A short circuit switch is connected to connector is Connect either a short circuit...

  • Page 124: A6" Indoor Unit: Fan Motor (m1f) Lock, Overload

    Troubleshooting by Indication on the Remote Controller SiBE39-402A “A6” Indoor Unit: Fan Motor (M1F) Lock, Overload Remote Controller Display Applicable All indoor unit models Models Method of Detection by failure of signal for detecting number of turns to come from the fan motor Malfunction Detection Malfunction...

  • Page 125: A7" Indoor Unit: Malfunction Of Swing Flap Motor (ma)

    Troubleshooting by Indication on the Remote Controller SiBE39-402A “A7” Indoor Unit: Malfunction of Swing Flap Motor (MA) Remote Controller Display Applicable All indoor unit models Models Method of Utilizes ON/OFF of the limit switch when the motor turns. Malfunction Detection Malfunction When ON/OFF of the microswitch for positioning cannot be reversed even though the swing flap Decision...

  • Page 126

    Troubleshooting by Indication on the Remote Controller SiBE39-402A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is power supply 220~240V provided? Provide 220~240V power supply. Indoor unit is a model equipped Replace indoor unit PC board.

  • Page 127

    Troubleshooting by Indication on the Remote Controller SiBE39-402A “A9” Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (20E) Remote Controller Display Applicable All indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions ! Malfunction of moving part of electronic expansion valve Supposed ! Defect of indoor unit PC board Causes...

  • Page 128

    Troubleshooting by Indication on the Remote Controller SiBE39-402A ∗1: Coil check method for the moving part of the electronic expansion valve Discount the electronic expansion valve from the PC board and check the continuity between the connector pins. (Normal) Pin No. 1.

  • Page 129: Af" Indoor Unit: Drain Level Above Limit

    Troubleshooting by Indication on the Remote Controller SiBE39-402A “AF” Indoor Unit: Drain Level above Limit Remote Controller Display Applicable All indoor unit models Models Method of Water leakage is detected based on float switch ON/OFF operation while the compressor is in Malfunction non-operation.

  • Page 130

    Troubleshooting by Indication on the Remote Controller SiBE39-402A “AJ” Indoor Unit: Malfunction of Capacity Determination Device Remote controller display Applicable All indoor unit models Models Method of Capacity is determined according to resistance of the capacity setting adaptor and the memory inside the IC memory on the indoor unit PC board, and whether the value is normal or abnormal Malfunction is determined.

  • Page 131

    Troubleshooting by Indication on the Remote Controller SiBE39-402A “C4” Indoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger Remote Controller Display Applicable All indoor unit models Models Method of Malfunction detection is carried out by temperature detected by heat exchanger thermistor. Malfunction Detection Malfunction...

  • Page 132

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.10 “C5” Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes Remote Controller Display Applicable All indoor unit models Models Method of Malfunction detection is carried out by temperature detected by gas pipe thermistor. Malfunction Detection Malfunction...

  • Page 133

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.11 “C9” Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction detection is carried out by temperature detected by suction air temperature Malfunction thermistor.

  • Page 134

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.12 “CA” Indoor Unit: Malfunction of Thermistor for Discharge Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction detection is carried out by temperature detected by discharge air temperature Malfunction thermistor.

  • Page 135

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.13 “CJ” Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction detection is carried out by temperature detected by remote controller air Malfunction temperature thermistor.

  • Page 136

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.14 “E1” Outdoor Unit: PC Board Defect Remote Controller Display Applicable AII outdoor unit models Models Method of Check data from E²PROM Malfunction Detection Malfunction When data could not be correctly received from the E²PROM Decision E²PROM : Type of nonvolatile memory.

  • Page 137

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.15 “E3” Outdoor Unit: Actuation of High Pressure Switch Remote Controller Display Applicable AII outdoor unit models Models Method of Abnormality is detected when the contact of the high pressure protection switch opens. Malfunction Detection Malfunction...

  • Page 138

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.16 “E4” Outdoor Unit: Actuation of Low Pressure Switch Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction Detection Malfunction Error is generated when the low pressure is dropped under specific pressure. Decision Conditions ! Abnormal drop of low pressure...

  • Page 139

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.17 “E5” Compressor Motor Lock Remote Controller Display Applicable AII outdoor unit models Models Method of Inverter PC board takes the position signal from UVWN line connected between the inverter and Malfunction compressor, and detects the position signal pattern.

  • Page 140

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.18 “E7” Malfunction of Outdoor Unit Fan Motor Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction of fan motor system is detected according to the fan speed detected by hall IC Malfunction when the fan motor runs.

  • Page 141

    Troubleshooting by Indication on the Remote Controller SiBE39-402A Troubleshooting Check No. 9 Check on connector of fan motor (Power supply cable) Check No. 11 Check on pulse input of position signal of fan inverter Is the pulse inputted? Replace the fan motor of outdoor unit.

  • Page 142

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.19 “E9” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve Remote Controller Display Applicable AII outdoor unit models Models Method of Check disconnection of connector Malfunction Check continuity of expansion valve coil Detection Malfunction Error is generated under no common power supply when the power is on.

  • Page 143

    Troubleshooting by Indication on the Remote Controller SiBE39-402A ∗1 Coil check method for the moving part of the electronic expansion valve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins. (Normal) Pin No. 1.

  • Page 144

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.20 “F3” Outdoor Unit: Abnormal Discharge Pipe Temperature Remote Controller Display Applicable AII outdoor unit models Models Method of Abnormality is detected according to the temperature detected by the discharge pipe Malfunction temperature sensor.

  • Page 145

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.21 “H9” Outdoor Unit: Malfunction of Thermistor for Outdoor Air (R1T) Remote Controller Display Applicable AII outdoor unit models Models Method of The abnormal detection is based on current detected by current sensor. Malfunction Detection Malfunction...

  • Page 146

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.22 “J3” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R3T) Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by discharge pipe temperature Malfunction thermistor.

  • Page 147

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.23 “J5” Outdoor Unit: Malfunction of Thermistor (R2T) for Suction Pipe Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by the suction pipe temperature Malfunction thermistor.

  • Page 148

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.24 “J6” Outdoor Unit: Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by the heat exchanger thermistor. Malfunction Detection Malfunction...

  • Page 149

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.25 “J9” Malfunction of Receiver Gas Pipe Thermistor (R5T) Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected according to the temperature detected by receiver gas pipe thermistor Malfunction (= Subcooling heat exchanger gas pipe thermistor).

  • Page 150

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.26 “JA” Outdoor Unit: Malfunction of High Pressure Sensor Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the pressure detected by the high pressure sensor. Malfunction Detection Malfunction...

  • Page 151

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.27 “JC” Outdoor Unit: Malfunction of Low Pressure Sensor Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from pressure detected by low pressure sensor. Malfunction Detection Malfunction When the low pressure sensor is short circuit or open circuit.

  • Page 152: Temperature Rise

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.28 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Remote Controller Display Applicable AII outdoor unit models Models Method of Fin temperature is detected by the thermistor of the radiation fin. Malfunction Detection Malfunction...

  • Page 153

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.29 “L5” Outdoor Unit: Inverter Compressor Abnormal Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from current flowing in the power transistor. Malfunction Detection Malfunction When an excessive current flows in the power transistor. Decision (Instantaneous overcurrent also causes activation.) Conditions...

  • Page 154

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.30 “L8” Outdoor Unit: Inverter Current Abnormal Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected by current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected. Decision Conditions ! Compressor overload...

  • Page 155

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.31 “L9” Outdoor Unit: Inverter Start up Error Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected during startup Decision Conditions...

  • Page 156: Inverter And Control Pc Board

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.32 “LC” Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board Remote Controller Display Applicable AII outdoor unit models Models Method of Check the communication state between inverter PC board and control PC board by micro- Malfunction computer.

  • Page 157

    Troubleshooting by Indication on the Remote Controller SiBE39-402A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Are the connectors between the main PC board (A1P) and Connect transmission wiring and inverter PC board turn on again.

  • Page 158: Temperature Rise Sensor

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.33 “P4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor Remote Controller Display Applicable AII outdoor unit models Models Method of Resistance of radiation fin thermistor is detected when the compressor is not operating. Malfunction Detection Malfunction...

  • Page 159

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.34 “PJ” Outdoor Unit: Faulty Combination of Inverter and Fan Driver Remote Controller Display Applicable AII outdoor unit models Models Method of Check the communication state between inverter PC board and control PC board by micro- Malfunction computer.

  • Page 160: Electronic Expansion Valve Failure

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.35 “UO” Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure Remote Controller Display Applicable AII outdoor unit models Models Method of Short of gas malfunction is detected by discharge pipe temperature thermistor. Malfunction Detection Malfunction...

  • Page 161

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.36 “U2” Power Supply Insufficient or Instantaneous Failure Remote Controller Display Applicable AII outdoor unit models Models Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Detection Malfunction...

  • Page 162

    Troubleshooting by Indication on the Remote Controller SiBE39-402A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is connection wire connected Repair wiring. between the connector X205A and X25A? Turn on again.

  • Page 163

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.37 “U3” Check Operation not Executed Remote Controller Display Applicable AII outdoor unit models Models Method of Check operation is executed or not Malfunction Detection Malfunction Malfunction is decided when the unit starts operation without check operation. Decision Conditions ! Check operation is not executed.

  • Page 164: And Outdoor Units

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.38 “U4” Malfunction of Transmission between Indoor Units and Outdoor Units Remote Controller Display Applicable AII indoor unit models Models AII outdoor unit models Method of Microcomputer checks if transmission between indoor and outdoor units is normal. Malfunction Detection Malfunction...

  • Page 165

    Troubleshooting by Indication on the Remote Controller SiBE39-402A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. the indoor or outdoor unit PC board been replaced, or has the indoor - outdoor Push and hold the RESET or outdoor - outdoor unit button on the master outdoor...

  • Page 166: Controller And Indoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.39 “U5” Malfunction of Transmission between Remote Controller and Indoor Unit Remote Controller Display Applicable AII indoor unit models Models Method of In case of controlling with 2-remote controller, check the system using microcomputer is signal Malfunction transmission between indoor unit and remote controller (main and sub) is normal.

  • Page 167: Slave Remote Controllers

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.40 “U8” Malfunction of Transmission between Master and Slave Remote Controllers Remote Controller Display Applicable AII indoor unit models Models Method of In case of controlling with 2-remote controller, check the system using microcomputer if signal Malfunction transmission between indoor unit and remote controller (main and sub) is normal.

  • Page 168: Outdoor Units In The Same System

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.41 “U9” Malfunction of Transmission between Indoor and Outdoor Units in the Same System Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions ! Malfunction of transmission within or outside of other system Supposed ! Malfunction of electronic expansion valve in indoor unit of other system Causes...

  • Page 169

    Troubleshooting by Indication on the Remote Controller SiBE39-402A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. "U9" has been displayed for 2 Re-diagnose by display after minutes or more. passage of 2 minutes or more.

  • Page 170

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.42 “UA” Excessive Number of Indoor Units Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions ! Excess of connected indoor units Supposed ! Defect of outdoor unit PC board (A1P) Causes ! Mismatching of the refrigerant type of indoor and outdoor unit.

  • Page 171

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.43 “UC” Address Duplication of Central Remote Controller Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions ! Address duplication of centralized remote controller Supposed ! Defect of indoor unit PC board Causes Troubleshooting...

  • Page 172: Remote Controller And Indoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.44 “UE” Malfunction of Transmission between Central Remote Controller and Indoor Unit Remote Controller Display Applicable AII indoor unit models Models Centralized controller Method of Microcomputer checks if transmission between indoor unit and centralized remote controller is normal.

  • Page 173

    Troubleshooting by Indication on the Remote Controller SiBE39-402A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. an indoor unit once connected been remove Reset power supply or its address simultaneously for all optional changed? controllers for centralized...

  • Page 174

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.45 “UF” Refrigerant System not Set, Incompatible Wiring/ Piping Remote Controller Display Applicable AII indoor unit models Models AII outdoor unit models Method of Malfunction Detection Malfunction Decision Conditions ! Improper connection of transmission wiring between outdoor unit and outdoor unit outside Supposed Causes control adaptor...

  • Page 175

    Troubleshooting by Indication on the Remote Controller SiBE39-402A 4.46 “UH” Malfunction of System, Refrigerant System Address Undefined Remote Controller Display Applicable AII indoor unit models Models AII outdoor unit models Method of Malfunction Detection Malfunction Decision Conditions ! Improper connection of transmission wiring between outdoor unit and outdoor unit outside Supposed Causes control adaptor...

  • Page 176: Troubleshooting By Indication On The Centralized Remote Controller

    Troubleshooting by Indication on the Centralized Remote Controller SiBE39-402A 5. Troubleshooting by Indication on the Centralized Remote Controller “UE” Malfunction of Transmission between Centralized Remote Controller and Indoor Unit Remote Controller Display Applicable AII indoor unit models Models Centralized Remote Controller Method of Microcomputer checks if transmission between indoor unit and central remote controller is normal.

  • Page 177

    Troubleshooting by Indication on the Centralized Remote Controller SiBE39-402A “M1” PC Board Defect Remote Controller Display Applicable Centralized remote controller Models Method of Malfunction Detection Malfunction Decision Conditions ! Defect of central remote controller PC board Supposed Causes Troubleshooting Replace the central remote controller PC board. Troubleshooting...

  • Page 178

    Troubleshooting by Indication on the Centralized Remote Controller SiBE39-402A “M8” Malfunction of Transmission between Optional Controllers for Centralized Control Remote Controller Display Applicable Centralized remote controller Models Method of Malfunction Detection Malfunction Decision Conditions ! Malfunction of transmission between optional controllers for centralized control Supposed ! Defect of PC board of optional controllers for centralized control Causes...

  • Page 179: Centralized Control

    Troubleshooting by Indication on the Centralized Remote Controller SiBE39-402A “MA” Improper Combination of Optional Controllers for Centralized Control Remote Controller Display Applicable Centralized remote controller Models Method of Malfunction Detection Malfunction Decision Conditions ! Improper combination of optional controllers for centralized control Supposed ! More than one master controller is connected Causes...

  • Page 180

    Troubleshooting by Indication on the Centralized Remote Controller SiBE39-402A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Cannot be used in Is the combination with a wiring wiring adaptor for adaptor for electrical electrical appendices appendices.

  • Page 181

    Troubleshooting by Indication on the Centralized Remote Controller SiBE39-402A “MC” Address Duplication, Improper Setting Remote Controller Display Applicable Centralized remote controller Models Method of Malfunction Detection Malfunction Decision Conditions ! Address duplication of centralized remote controller Supposed Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 182: Troubleshooting By Indication On The Unified On/off Controller, Operation Lamp Blinks

    Troubleshooting by Indication on the Unified ON/OFF Controller SiBE39-402A 6. Troubleshooting by Indication on the Unified ON/ OFF Controller Operation Lamp Blinks Remote Operation lamp blinks Controller Display Applicable All models of indoor units Models Unified ON/OFF controller Method of Malfunction Detection Malfunction...

  • Page 183

    Troubleshooting by Indication on the Unified ON/OFF Controller SiBE39-402A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is a malfunction code displayed on the Diagnose the cause with the remote controller? air conditioner's failure diagnosis manual.

  • Page 184

    Troubleshooting by Indication on the Unified ON/OFF Controller SiBE39-402A Display “Under Host Computer Integrate Control” Blinks (Repeats Single Blink) Remote “under host computer integrated control” (Repeats single blink) Controller Display Applicable Unified ON/OFF controller Models Central controller, Schedule timer Method of Malfunction Detection Malfunction...

  • Page 185

    Troubleshooting by Indication on the Unified ON/OFF Controller SiBE39-402A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Has a once connected optional controller for centralized Reset power supply control been disconnected simultaneously for all optional or itsaddress...

  • Page 186

    Troubleshooting by Indication on the Unified ON/OFF Controller SiBE39-402A Is the wiring adaptor for Cannot be used in electrical appendices combination with a wiring connected? adaptor for electrical appendices. Remove the wiring adaptor for electrical appendices and reset the power supply for all optional controllers for centralized control simultaneously.

  • Page 187: Repeats Double Blink

    Troubleshooting by Indication on the Unified ON/OFF Controller SiBE39-402A Display “Under Host Computer Integrate Control” Blinks (Repeats Double Blink) Remote “under host computer integrated control” (Repeats double blink) Controller Display Applicable Unified ON/OFF controller Models Method of Malfunction Detection Malfunction Decision Conditions ! Central control address (group No.) is not set for indoor unit.

  • Page 188: Troubleshooting (op: Schedule Timer)

    Troubleshooting (OP: Schedule Timer) SiBE39-402A 7. Troubleshooting (OP: Schedule Timer) “UE” Malfunction of Transmission between Central Remote Controller and Indoor Unit Remote Controller Display Applicable Schedule timer Models Method of Microcomputer checks if transmission between indoor unit and centralized remote controller is Malfunction normal.

  • Page 189

    Troubleshooting (OP: Schedule Timer) SiBE39-402A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. an indoor unit once connected been Reset power supply removeor its address simultaneously for all optional changed? controllers for centralized control.

  • Page 190

    Troubleshooting (OP: Schedule Timer) SiBE39-402A “M1” PC Board Defect Remote Controller Display Applicable Schedule timer Models Method of Malfunction Detection Malfunction Decision Conditions ! Defect of schedule timer PC board Supposed Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 191

    Troubleshooting (OP: Schedule Timer) SiBE39-402A “M8” Malfunction of Transmission between Optional Controllers for Centralized Control Remote Controller Display Applicable All models of indoor units, schedule timer Models Method of Malfunction Detection Malfunction Decision Conditions ! Malfunction of transmission between optional controllers for centralized control Supposed ! Defect of PC board of optional controllers for centralized control Causes...

  • Page 192

    Troubleshooting (OP: Schedule Timer) SiBE39-402A “MA” Improper Combination of Optional Controllers for Centralized Control Remote Controller Display Applicable All models of indoor units, schedule timer Models Method of Malfunction Detection Malfunction Decision Conditions ! Improper combination of optional controllers for centralized control Supposed ! More than one master controller is connected.

  • Page 193

    Troubleshooting (OP: Schedule Timer) SiBE39-402A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Cannot be used in combination with a wiring Is the wiring adaptor for electrical adaptor for electrical appendices.

  • Page 194

    Troubleshooting (OP: Schedule Timer) SiBE39-402A “MC” Address Duplication, Improper Setting Remote Controller Display Applicable All models of indoor units, Models schedule timer Method of Malfunction Detection Malfunction Decision Conditions ! Address duplication of optional controller for centralized control Supposed Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 195: Check

    Check SiBE39-402A 8. Check Check No. 8 Check on connector of fan motor (Power supply cable) (1) Turn off the power supply. Measure the resistance between phases of U,V,W at the motor side connectors (three-core wire) to check that the values are balanced and there is no short circuiting, while connector or relay connector is disconnected.

  • Page 196

    Check SiBE39-402A Check No. 11 Check for Fan Speed Pulse Input on Outdoor Unit PC Board (1) Disconnect the connector X206A with the power supply OFF and Operation OFF. (2) Is the voltage between pins 4 and 3 of X206A about 15 VDC after turning the power supply (3) Is the voltage between pins 4 and 1 of X206A about 5 VDC? (4) Connect the connector X206A with the power supply OFF and Operation OFF.

  • Page 197: Part 8 Appendix

    SiBE39-402A Part 8 Appendix 1. Piping Diagrams 188 1.1 Outdoor Unit 188 1.2 Indoor Unit 189 2. Wiring Diagrams for Reference 192 2.1 Outdoor Unit 192 2.2 Indoor Unit 193 3. Thermistor Resistance / Temperature Characteristics 198 4. Pressure Sensor 200 Appendix...

  • Page 198: Piping Diagrams

    Piping Diagrams SiBE39-402A 1. Piping Diagrams Outdoor Unit RXYSQ4M7V3B RXYSQ5M7V3B RXYSQ6M7V3B Four way valve Service port High pressure sensor Pressure Heat exchanger regulating valve Filter Filter High pressure switch Solenoid Capillary valve tube Compressor Low pressure sensor Check Check valve valve Filter Filter...

  • Page 199

    Piping Diagrams SiBE39-402A Indoor Unit FXZQ20M / 25M / 32M / 40M / 50MVE Gas pipe connection port Heate xchanger Liquid pipe connection port Filter Filter Electronic expansion valve 4D040157 FXKQ25M / 32M / 40M / 63MVE FXMQ40M / 50M / 63M / 80M / 100M / 125MVE FXHQ32M / 63M / 100MVE FXLQ20M / 25M / 32M / 40M / 50M / 63MVE FXNQ20M / 25M / 32M / 40M / 50M / 63MVE...

  • Page 200

    Piping Diagrams SiBE39-402A FXDQ20N / 25N / 32N / 40N / 50N / 63NVE Gas side Liquid side Electronic expansion valve Filter Filter Indoor heat exchanger 4D043864A FXAQ20M / 25M / 32M / 40M / 50M / 63MVE Gas piping connection port Heat exchanger Flare connection : φ15.9 or less Attached piping : Above φ19.1...

  • Page 201

    Piping Diagrams SiBE39-402A FXAQ + BEVQ / FXLQ + BEVQ Indoor unit Gas piping connection port Heat exchanger Liquid pipe connection port Filter 4D04708 Connection Unit Electronic expansion valve Liquid piping Liquid piping connection port connection port Filter Filter Gas piping Gas piping connection port connection port...

  • Page 202: Wiring Diagrams For Reference

    Wiring Diagrams for Reference SiBE39-402A 2. Wiring Diagrams for Reference Outdoor Unit RXYSQ4M7V3B RXYSQ5M7V3B RXYSQ6M7V3B Appendix...

  • Page 203

    Wiring Diagrams for Reference SiBE39-402A Indoor Unit FXZQ20M / 25M / 32M / 40M / 50MVE Printed circuit board Push button (ON/OFF) Capacitor (M1F) Light emitting diode Fuse (B, 5A, 250V) (ON-RED) Light emitting diode Light emitting diode (Service monitro green) (TIMER-GREEN) Magnetic relay (M1P) Light emitting diode...

  • Page 204

    Wiring Diagrams for Reference SiBE39-402A FXDQ20N / 25N / 32N / 40N / 50N / 63NVE Printed circuit board Capacitor (M1F) Fuse (F5A/250V) Light emitting diode (Service monitor green) Magnetic relay (M1P) Motor (Indoor fan) Motor (Drain pump) t° t° t°...

  • Page 205

    Wiring Diagrams for Reference SiBE39-402A FXHQ32M / 63M / 100MVE Indoor unit Light emitting diode Printed circuit board (FILTER SIGN-RED) Capacitor (M1F) Light emitting diode Fuse (B, 5A, 250V) (DEFROST-ORANGE) Note 4 Light emitting diode Selector switch Receiver/display unit (Service monitor-green) (Main/Sub) (Wireless remote Magnetic relay (M1S)

  • Page 206

    Wiring Diagrams for Reference SiBE39-402A FXLQ20M / 25M / 32M / 40M / 50M / 63MVE FXNQ20M / 25M / 32M / 40M / 50M / 63MVE Indoor unit Terminal block (Control) Printed circuit board Electronic expansion valve Capacitor (M1F) WIRED REMOTE CONTROLLER Power Supply Fuse (B, 5A, 250V)

  • Page 207

    Wiring Diagrams for Reference SiBE39-402A FXLQ20MH / 25MH / 32MH / 40MH / 50MHV1 Power supply Indoor unit Printed circuit board 220-240V Control box Capacitor (M1F) Wired remote control Note 6 Light emitting diode (Optional accessory) (Service monitor green) BEV unit X35A Light emitting diode X33A...

  • Page 208: Thermistor Resistance / Temperature Characteristics

    Thermistor Resistance / Temperature Characteristics SiBE39-402A 3. Thermistor Resistance / Temperature Characteristics Indoor unit For air suction For liquid pipe For gas pipe Outdoor unit For outdoor air For coil For suction pipe For Receiver gas pipe (kΩ) T°C T°C 197.81 192.08 16.10...

  • Page 209

    Thermistor Resistance / Temperature Characteristics SiBE39-402A Outdoor Unit Thermistors for Discharge Pipe (R3T) (kΩ)) T°C T°C T°C 640.44 624.65 72.32 70.96 13.35 13.15 609.31 594.43 69.64 68.34 12.95 12.76 579.96 565.78 67.06 65.82 12.57 12.38 552.00 538.63 64.60 63.41 12.20 12.01 525.63 512.97...

  • Page 210: Pressure Sensor

    Pressure Sensor SiBE39-402A 4. Pressure Sensor = 1.38V-0.69 : Detected Pressure [High Side] MP = 0.57V-0.28 : Detected Pressure [Low Side] MPa : High pressure (MPa) : Output Voltage [High Side] V Detected Pressure : Low pressure (MPa) : Output Voltage [Low Side] V V : Voltage (V) 51.0 5.0 45.9 4.5...

  • Page 211

    SiBE39-402A Part 9 Precautions for New Refrigerant (R410A) 1. Precautions for New Refrigerant (R410A) 202 1.1 Outline 202 1.2 Service Tools 204 Precautions for New Refrigerant (R410)

  • Page 212: Precautions For New Refrigerant (r410a)

    Precautions for New Refrigerant (R410A) SiBE39-402A 1. Precautions for New Refrigerant (R410A) Outline 1.1.1 About Refrigerant R410A ! Characteristics of new refrigerant, R410A 1. Performance Almost the same performance as R22 and R407C 2. Pressure Working pressure is approx. 1.4 times more than R22 and R407C. 3.

  • Page 213

    SiBE39-402A Precautions for New Refrigerant (R410A) ! Thermodynamic characteristic of R410A DAIREP ver2.0 Temperature Steam pressure Density Specific heat at constant Specific enthalpy Specific entropy (°C) (kPa) (kg/m pressure (kJ/kgK) (kJ/kg) (kJ/KgK) Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor 36.13...

  • Page 214: Service Tools

    Precautions for New Refrigerant (R410A) SiBE39-402A Service Tools R410A is used under higher working pressure, compared to previous refrigerants (R22,R407C). Furthermore, the refrigerating machine oil has been changed from Suniso oil to Ether oil, and if oil mixing is occurred, sludge results in the refrigerants and causes other problems. Therefore, gauge manifolds and charge hoses that are used with a previous refrigerant (R22,R407C) can not be used for products that use new refrigerants.

  • Page 215

    SiBE39-402A Precautions for New Refrigerant (R410A) 1. Flaring tool Flare gauge ! Specifications 2 Dimension A Unit:mm Tube O.D. -0.4 Nominal size Class-2 (R410A) Class-1 (Conventional) 6.35 9.52 13.2 13.0 12.70 16.6 16.2 15.88 19.7 19.4 19.05 24.0 23.3 ! Differences 2 Change of dimension A Dimension A For class-1: R407C...

  • Page 216

    Precautions for New Refrigerant (R410A) SiBE39-402A 2. Torque wrench ! Specifications 2 Dimension B Unit:mm Nominal size Class-1 Class-2 Previous No change in tightening torque No change in pipes of other sizes ! Differences 2 Change of dimension B Only 1/2", 5/8" are extended For class-1: R407C For class-2: R410A Dimension B...

  • Page 217

    SiBE39-402A Precautions for New Refrigerant (R410A) 4. Leak tester ! Specifications 2 Hydrogen detecting type, etc. 2 Applicable refrigerants R410A, R407C, R404A, R507A, R134a, etc. ! Differences 2 Previous testers detected chlorine. Since HFCs do not contain chlorine, new tester detects hydrogen.

  • Page 218

    Precautions for New Refrigerant (R410A) SiBE39-402A 2 Temperature scale indicates the relationship between pressure and temperature in gas saturated state. ! Differences 2 Change in pressure 2 Change in service port diameter 7. Charge hose for R410A (Hose with ball valve) ! Specifications 2 Working pressure 5.08 MPa (51.8 kg/cm 2 Rupture pressure 25.4 MPa (259 kg/cm...

  • Page 219

    SiBE39-402A Precautions for New Refrigerant (R410A) 9. Weigher for refrigerant charge ! Specifications 2 High accuracy TA101A (for 10-kg cylinder) = ± 2g TA101B (for 20-kg cylinder) = ± 5g 2 Equipped with pressure-resistant sight glass to check liquid refrigerant charging. 2 A manifold with separate ports for HFCs and previous refrigerants is equipped as standard accessories.

  • Page 220

    Precautions for New Refrigerant (R410A) SiBE39-402A Precautions for New Refrigerant (R410A)

  • Page 221

    SiBE39-402A Index e7 ................. 130 e9 ................. 132 a0 ................110 electrical and functional parts a1 ................111 indoor unit ............29 a3 ................112 outdoor unit............28 a6 ................114 electronic expansion valve pi control ..... 41 a7 ................115 error of external protection device......110 a9 ................117 excessive number of indoor units......

  • Page 222

    SiBE39-402A m1 ..............167, 180 p4 ................. 148 m8 ..............168, 181 pc board defect ......111, 126, 167, 180 ma ..............169, 182 pj ................149 malfunction code indication by outdoor unit pcb ...108 power supply insufficient or instantaneous failure 151 malfunction of capacity determination device ..120 precautions for new refrigerant (r410a) ....

  • Page 223: Table Of Contents

    SiBE39-402A Drawings & Flow Charts freeze prevention ........... 61 functional parts layout ..........36 abnormal discharge pipe temperature ....134 actuation of high pressure switch......127 actuation of low pressure switch ......128 gauge manifold for r410a ........207 address duplication of central remote controller ...161 address duplication, improper setting ..

  • Page 224: Table Of Contents

    SiBE39-402A malfunction of thermostat sensor in heating ............. 60 remote controller ..........125 torque wrench ............206 malfunction of transmission between central turn power on ............64 remote controller and indoor unit ..162 malfunction of transmission between centralized remote controller and indoor unit ....166 unit no.

  • Page 225

    Daikin Europe N.V. is approved by LRQA for its Quality Daikin units comply with the European regulations that Management System in accordance with the ISO9001 guarantee the safety of the product. standard. ISO9001 pertains to quality assurance regarding design, development, manufacturing as well as to services related to the product.

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