Daikin RXYSQ4-5-6PA7V1B Service Manual
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Daikin RXYSQ4-5-6PA7V1B Service Manual

Vrv iii-s
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SiBE34 - 802
RXYSQ4·5·6PA7Y1B, PA7V1B
R-410A
Heat Pump 50Hz
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Summary of Contents for Daikin RXYSQ4-5-6PA7V1B

  • Page 1 SiBE34 - 802 RXYSQ4·5·6PA7Y1B, PA7V1B R-410A Heat Pump 50Hz...

  • Page 2: Table Of Contents

    SiBE34-802 R-410A Heat Pump 50Hz 1. Introduction ....................v 1.1 Safety Cautions ..................v 1.2 PREFACE ....................ix 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 SiBE34-802 Restart Standby..................58 Stopping Operation ................59 Protection Control .................60 High Pressure Protection Control............60 Low Pressure Protection Control............61 Discharge Pipe Protection Control ............62 Inverter Protection Control ..............63 Other Control..................64 Demand Operation .................64 Heating Operation Prohibition ..............64 6. Outline of Control (Indoor Unit) .............65 Drain Pump Control................65 Louver Control for Preventing Ceiling Dirt..........67 Thermostat Sensor in Remote Controller..........68...
  • Page 4 SiBE34-802 3.10 “C1” Indoor Unit: Failure of Transmission (Between Indoor unit PC Board and Fan PC Board)......154 3.11 “C4” Indoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger ................156 3.12 “C5” Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes ..157 3.13 “C6”...
  • Page 5 SiBE34-802 3.48 “UA” Excessive Number of Indoor Units ..........200 3.49 “UC” Address Duplication of Central Remote Controller......201 3.50 “UE” Malfunction of Transmission between Central Remote Controller and Indoor Unit ..........202 3.51 “UF” System is not Set yet..............204 3.52 “UH” Malfunction of System, Refrigerant System Address Undefined...205 Troubleshooting by Indication on the Centralized Remote Controller............206 4.1 “UE”...

  • Page 6: Introduction

    SiBE34-802 Introduction 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ Warning” Warnings items are especially important since they can lead to death or serious injury if they are not followed closely.
  • Page 7 Introduction SiBE34-802 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 SiBE34-802 Introduction 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 Introduction SiBE34-802 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: Preface

    This is the new service manual for Daikin's Year 2008 VRVIII-S series Heat Pump System. Daikin offers a wide range of models to respond to building and office air conditioning needs. We are confident that customers will be able to find the models that best suit their needs.
  • Page 11 Introduction SiBE34-802...

  • Page 12: Part 1 General Information

    SiBE34-802 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 13: Model Names Of Indoor/Outdoor Units

    Model Names of Indoor/Outdoor Units SiBE34-802 1. Model Names of Indoor/Outdoor Units *Indoor Units Type Model Name Power Supply Ceiling Mounted FXCQ — 125M Cassette Type (Double Flow) Ceiling Mounted FXFQ 100P 125P Cassette Type (Round Flow) 600×600 Ceiling FXZQ —...

  • Page 14: External Appearance

    SiBE34-802 External Appearance 2. External Appearance Indoor Units Ceiling Mounted Cassette Type (Double Flow) Ceiling Mounted Duct Type FXCQ20M8 FXMQ40P FXCQ25M8 FXMQ50P FXCQ32M8 FXMQ63P FXCQ40M8 FXMQ80P FXCQ50M8 FXMQ100P FXCQ63M8 FXMQ125P FXCQ80M8 FXCQ125M8 Ceiling Mounted Cassette Type (Round Flow) Ceiling Suspended Type FXFQ20P7 FXHQ32MA FXFQ25P7...

  • Page 15: Capacity Range

    Capacity Range SiBE34-802 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 Capacity Range 0.8HP 1.25HP 1.6HP 2.5HP 3.2HP Capacity Index 31.25 62.5 Ceiling Mounted...

  • Page 16: Part 2 Specifications

    SiBE34-802 Part 2 Specifications 1. Specifications ..................6 1.1 Outdoor Units ...................6 1.2 Indoor Units ....................10 Specifications...

  • Page 17: Specifications

    4.03 3.83 Capacity range PED category Category I Max n° of indoor units to be connected Minimum 62.5 Indoor index connection Maximum 162.5 Colour Daikin White Casing Material Painted galvanised steel Height 1,524 Packing Width Depth Dimensions Height 1,345 Unit...
  • Page 18 SiBE34-802 Specifications 1-1 TECHNICAL SPECIFICATIONS RXYSQ4PA7Y1B RXYSQ5PA7Y1B RXYSQ6PA7Y1B Sound Power (Nominal) Cooling Sound Pressure Sound level (Nominal) Sound Heating Pressure (Nominal) Name R-410A Charge Refrigerant Control Expansion valve (electronic type) Nr of Circuits Name Daphne FVC68D Refrigerant Charged Volume Type Flare connection Liquid Diameter...
  • Page 19 4.15 3.94 Capacity range PED category Category I Max n° of indoor units to be connected Minimum 62.5 Indoor index connection Maximum 162.5 Colour Daikin White Casing Material Painted galvanised steel Height 1,524 Packing Width Depth Dimensions Height 1,345 Unit...
  • Page 20 SiBE34-802 Specifications 1-1 TECHNICAL SPECIFICATIONS RXYSQ4PA7V1B RXYSQ5PA7V1B RXYSQ6PA7V1B Name R-410A Charge Refrigerant Control Expansion valve (electronic type) N× of circuits Name Daphne FVC68D Refrigerant Charged Volume Type Flare connection Liquid Diameter (OD) 9.52 9.52 9.52 (OD) Type Flare connection Flare connection Braze connection Diameter 15.9...

  • Page 21: Indoor Units

    Specifications SiBE34-802 Indoor Units Ceiling Mounted Cassette Type (Double Flow) 1-1 TECHNICAL SPECIFICATIONS FXCQ20M8V3B FXCQ25M8V3B FXCQ32M8V3B FXCQ40M8V3B FXCQ50M8V3B Cooling 2.20 2.80 3.60 4.50 5.60 Nominal Capacity Heating 2.50 3.20 4.00 5.00 6.30 Cooling 0.077 0.092 0.092 0.130 0.130 Power input (Nominal) Heating 0.044...
  • Page 22 SiBE34-802 Specifications 1-1 TECHNICAL SPECIFICATIONS FXCQ20M8V3B FXCQ25M8V3B FXCQ32M8V3B FXCQ40M8V3B FXCQ50M8V3B Air Filter Resin net with mold resistance Air direction control Up and downwards Refrigerant control Electronic expansion valve Temperature control Microprocessor thermostat for cooling and heating Safety devices PC board fuse, Fan motor thermal fuse, Drain pump fuse Screws for fixing the paper pattern for installation, Washer for hanging bracket, Installation and operation manual, Paper Standard Accessories pattern for installation, Insulation for fitting, Drain hose...
  • Page 23 Specifications SiBE34-802 Ceiling Mounted Cassette Type (Double Flow) 1-1 TECHNICAL SPECIFICATIONS FXCQ63M8V3B FXCQ80M8V3B FXCQ125M8V3B Cooling 7.10 9.00 14.00 Nominal Capacity Heating 8.00 10.00 16.00 Cooling 0.161 0.209 0.256 Power input (Nominal) Heating 0.126 0.176 0.223 Colour Non painted Casing Material Galvanised steel Height Packing...
  • Page 24 SiBE34-802 Specifications Ceiling Mounted Cassette Type (Round-flow) 1-1 TECHNICAL SPECIFICATIONS FXFQ20P7VEB FXFQ25P7VEB FXFQ32P7VEB FXFQ40P7VEB FXFQ50P7VEB Cooling Capacity Heating Cooling 0.053 0.053 0.053 0.063 0.083 Power Input Heating 0.045 0.045 0.045 0.055 0.067 Casing Material Galvanised steel Height Packing Width Depth Dimensions Height Unit...
  • Page 25 Specifications SiBE34-802 Ceiling Mounted Cassette Type (Round-flow) 1-1 TECHNICAL SPECIFICATIONS FXFQ63P7VEB FXFQ80P7VEB FXFQ100P7VEB FXFQ125P7VEB Cooling 11.2 14.0 Capacity Heating 10.0 12.5 16.0 Cooling 0.095 0.120 0.173 0.258 Power Input Heating 0.114 0.108 0.176 0.246 Casing Material Galvanised steel Height Packing Width Depth Dimensions...
  • Page 26 SiBE34-802 Specifications 600×600 Ceiling Mounted Cassette Type (Multi Flow) 1-1 TECHNICAL SPECIFICATIONS FXZQ20M8V1B FXZQ25M8V1B FXZQ32M8V1B FXZQ40M8V1B FXZQ50M8V1B Cooling 2.20 2.80 3.60 4.50 5.60 Nominal Capacity Heating 2.50 3.20 4.00 5.00 6.30 Cooling 0.073 0.073 0.076 0.089 0.115 Power input (Nominal) Heating 0.064 0.064...
  • Page 27 Specifications SiBE34-802 Ceiling Mounted Cassette Corner Type 1-1 TECHNICAL SPECIFICATIONS FXKQ25MAVE FXKQ32MAVE FXKQ40MAVE FXKQ63MAVE Cooling 2.80 3.60 4.50 7.10 Nominal Capacity Heating 3.20 4.00 5.00 8.00 Cooling 0.066 0.066 0.076 0.105 Power input (Nominal) Heating 0.046 0.046 0.056 0.085 Casing Material Galvanised steel Height...
  • Page 28 SiBE34-802 Specifications Slim Ceiling Mounted Duct Type 1-1 TECHNICAL SPECIFICATIONS FXDQ20PVE FXDQ25PVE FXDQ32PVE FXDQ40NAVE FXDQ50NAVE FXDQ63NAVE Cooling 2.20 2.80 3.60 4.50 5.60 7.10 Nominal Capacity Heating 2.50 3.20 4.00 5.00 6.30 8.00 Cooling 0.086 0.086 0.089 0.160 0.165 0.181 Power input (Nominal) Heating 0.067...
  • Page 29 Specifications SiBE34-802 Slim Ceiling Mounted Duct Type (with Drain Pump) 1-1 TECHNICAL SPECIFICATIONS FXDQ20M8V3B FXDQ25M8V3B Cooling 2.20 2.80 Nominal Capacity Heating 2.50 3.20 Cooling 0.050 0.050 Power input (Nominal) Heating 0.050 0.050 Colour Non painted Casing Material Galvanised steel Height Packing Width Depth...
  • Page 30 SiBE34-802 Specifications Ceiling Mounted Built-in Type 1-1 TECHNICAL SPECIFICATIONS FXSQ20M8V3B FXSQ25M8V3B FXSQ32M8V3B FXSQ40M8V3B FXSQ50M8V3B Capacity Cooling 2.20 2.80 3.60 4.50 5.60 (Conditions Heating 2.50 3.20 4.00 5.00 6.30 specified in 1) Cooling 0.110 0.110 0.114 0.127 0.143 Power input (Nominal) Heating 0.090 0.090...
  • Page 31 Specifications SiBE34-802 Ceiling Mounted Built-in Type 1-1 TECHNICAL SPECIFICATIONS FXSQ63M8V3B FXSQ80M8V3B FXSQ100M8V3B FXSQ125M8V3B Capacity Cooling 7.10 9.00 11.20 14.00 (Conditions Heating 8.00 10.00 12.50 16.00 specified in 1) Cooling 0.189 0.234 0.242 0.321 Power input (Nominal) Heating 0.169 0.214 0.222 0.301 Colour Non painted...
  • Page 32 SiBE34-802 Specifications Ceiling Mounted Duct Type 1-1 TECHNICAL SPECIFICATIONS FXMQ40PVE FXMQ50PVE FXMQ63PVE FXMQ80PVE FXMQ100PVE FXMQ125PVE Cooling 11.2 14.0 Capacity Heating 10.0 12.5 16.0 0.194 (1) 0.215 (1) 0.230 (1) 0.298 (1) 0.376 (1) 0.461 (1) Cooling 0.193 (2) 0.214 (2) 0.229 (2) 0.297 (2) 0.375 (2)

  • Page 33: Ceiling Suspended Type

    Specifications SiBE34-802 Ceiling Suspended Type 1-1 TECHNICAL SPECIFICATIONS FXHQ32MAVE FXHQ63MAVE FXHQ100MAVE Cooling 3.60 7.10 11.20 Nominal Capacity Heating 4.00 8.00 12.50 Cooling 0.111 0.115 0.135 Power input (Nominal) Heating 0.111 0.115 0.135 Casing Colour White (10Y9/0,5) Height Dimensions Unit Width 1160 1400 Depth...
  • Page 34 SiBE34-802 Specifications Wall Mounted Type 1-1 TECHNICAL SPECIFICATIONS FXAQ20MAVE FXAQ25MAVE FXAQ32MAVE FXAQ40MAVE FXAQ50MAVE FXAQ63MAVE Cooling 2.20 2.80 3.60 4.50 5.60 7.10 Nominal Capacity Heating 2.50 3.20 4.00 5.00 6.30 8.00 Cooling 0.016 0.022 0.027 0.020 0.027 0.050 Power input (Nominal) Heating 0.024 0.027...
  • Page 35 Specifications SiBE34-802 Floor Standing Type 1-1 TECHNICAL SPECIFICATIONS FXLQ20MAVE FXLQ25MAVE FXLQ32MAVE FXLQ40MAVE FXLQ50MAVE FXLQ63MAVE Cooling 2.20 2.80 3.60 4.50 5.60 7.10 Nominal Capacity Heating 2.50 3.20 4.00 5.00 6.30 8.00 Cooling 0.049 0.049 0.090 0.090 0.110 0.110 Power input (Nominal) Heating 0.049 0.049...
  • Page 36 SiBE34-802 Specifications Concealed Floor Standing Type 1-1 TECHNICAL SPECIFICATIONS FXNQ20MAVE FXNQ25MAVE FXNQ32MAVE FXNQ40MAVE FXNQ50MAVE FXNQ63MAVE Cooling 2.20 2.80 3.60 4.50 5.60 7.10 Nominal Capacity Heating 2.50 3.20 4.00 5.00 6.30 8.00 Cooling 0.049 0.049 0.090 0.090 0.110 0.110 Power input (Nominal) Heating 0.049...
  • Page 37 Specifications SiBE34-802 Ceiling Suspended Cassette Type 1-1 TECHNICAL SPECIFICATIONS FXUQ71MAV1 FXUQ100MAV1 FXUQ125MAV1 Cooling 0.180 0.289 0.289 Power input (Nominal) Heating 0.160 0.269 0.269 Colour White Casing Material Resin Height Packing Width Depth Dimensions Height Unit Width Depth Unit Weight Packed Unit Length 2101 2101...
  • Page 38 SiBE34-802 Specifications BEV Units 11-1-1Technical Specifications BEVQ71MAVE BEVQ100MAVE BEVQ125MAVE Cooling 0.189 0.298 0.298 Power input (Nominal) Heating 0.169 0.278 0.278 Casing Material Galvanised steel plate Height Dimensions Packing Width Depth Sound absorbing thermal insulation material Flame and heat resistant foamed polyetherene Weight Unit Type...
  • Page 39 Specifications SiBE34-802 Specifications...

  • Page 40: Part 3 List Of Electrical And Functional Parts

    SiBE34-802 Part 3 List of Electrical and Functional Parts 1. List of Electrical and Functional Parts ...........30 1.1 Outdoor Unit ...................30 Indoor Unit....................32 List of Electrical and Functional Parts...

  • Page 41: List Of Electrical And Functional Parts

    List of Electrical and Functional Parts SiBE34-802 1. List of Electrical and Functional Parts Outdoor Unit RXYSQ4 / 5 / 6PA7Y1B Model Remark Item Name Symbol (PCB terminal) Type JT1G-VDLYR Relay Inverter Compressor Output 2.5kW 3.0kW 3.5kW A2P X102A Crankcase heater (INV) E1HC A1P X28A Motor...
  • Page 42 SiBE34-802 List of Electrical and Functional Parts RXYSQ4 / 5 / 6PA7V1B Model Remark Item Name Symbol (PCB terminal) Type JT100G-VDL Relay Inverter Compressor Output 2.5kW 3.0kW 3.5kW Crankcase heater (INV) E1HC A1P X28A Motor M1F·M2F 0.07kW — Fan motor Over-current relay —...

  • Page 43: Indoor Unit

    List of Electrical and Functional Parts SiBE34-802 Indoor Unit Model FXFQ FXFQ Parts Name Symbol Remark FXFQ20 FXFQ25 FXFQ32 FXFQ40 FXFQ50 FXFQ63 FXFQ80 Wired Remote BRC1D52 Controller Remote Option Controller Wireless Remote BRC7F532 Controller ±5 ±15 Fan Motor Thermal Proctector : OFF : 108 (ON : 96 AC220-240V (50Hz) AC220V (60Hz) Drain Pump...
  • Page 44 SiBE34-802 List of Electrical and Functional Parts Model Parts Name Symbol Remark FXZQ FXZQ FXZQ FXZQ FXZQ 20MV1 25MV1 32MV1 40MV1 50MV1 Wired Remote BRC1D52 Controller Remote Option Controller Wireless Remote BRC7E530 Controller AC 220~240V 50Hz Fan Motor 1φ55W 4P ±5 ±20 Thermal Fuse OFF : 130...
  • Page 45 List of Electrical and Functional Parts SiBE34-802 Model Parts Name Symbol Remark FXDQ FXDQ FXDQ FXDQ FXDQ FXDQ 20 PVE 25PVE 32PVE 40NAVE 50NAVE 63NAVE Wired Remote BRC1D52 Controller Remote Option Controller Wireless Remote BRC4C62 Controller AC 220~240V 50Hz 1φ62W 1φ130W Fan Motor Thermal protector...
  • Page 46 SiBE34-802 List of Electrical and Functional Parts Model FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ Parts Name Symbol Remark Wired Remote BRC1D52 Controller Remote Option Controller Wireless Remote BRC4C62 Controller AC 220~240V 50Hz 1φ125 1φ50W 1φ65W 1φ85W 1φ225W Fan Motor Thermal protector Motors...
  • Page 47 List of Electrical and Functional Parts SiBE34-802 Model Parts Name Symbol Remark FXHQ FXHQ FXHQ 32MAVE 63MAVE 100MAVE Wired Remote BRC1D52 Option Remote Controller Controller Wireless Controller BRC7E63W AC 220~240V/220V 50Hz/60Hz Fan Motor 1φ63W 1φ130W Thermal protector 130°C : OFF 80°C : ON Motors Capacitor for Fan Motor...
  • Page 48 SiBE34-802 List of Electrical and Functional Parts Model Parts Name Symbol Remark FXLQ FXLQ FXLQ FXLQ FXLQ FXLQ 20MAVE 25MAVE 32MAVE 40MAVE 50MAVE 63MAVE Wired Remote BRC1D52 Controller Remote Option Controller Wireless Remote BRC4C62 Controller AC 220~240V 50Hz Fan Motor 1φ15W 1φ25W 1φ35W...
  • Page 49 List of Electrical and Functional Parts SiBE34-802 List of Electrical and Functional Parts...

  • Page 50: Part 4 Refrigerant Circuit

    SiBE34-802 Part 4 Refrigerant Circuit Refrigerant Circuit .................40 Outdoor Unit ...................40 2. Functional Parts Layout ................44 2.1 RXYSQ4 / 5 / 6PA7Y1B .................44 2.2 RXYSQ4 / 5 / 6PA7V1B .................45 Refrigerant Circuit...

  • Page 51: Refrigerant Circuit

    Refrigerant Circuit SiBE34-802 Refrigerant Circuit Outdoor Unit RXYSQ4 / 5 / 6PA7Y1B No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 36 Hz and 195 Hz by using Inverter compressor (INV) the inverter. 31 steps Since the system is of air heat exchanging type, the fan is operated at 8-step rotation Inverter fan...
  • Page 52 SiBE34-802 Refrigerant Circuit C : 3D052628 Refrigerant Circuit...
  • Page 53 Refrigerant Circuit SiBE34-802 RXYSQ4 / 5 / 6PA7V1B No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 36 Hz and 195 Hz by using Inverter compressor (INV) the inverter. 31 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 54 SiBE34-802 Refrigerant Circuit C : 3D052712 Refrigerant Circuit...

  • Page 55: Functional Parts Layout

    Functional Parts Layout SiBE34-802 2. Functional Parts Layout RXYSQ4 / 5 / 6PA7Y1B Birds-eye view PRESSURE SENSOR (HIGH) THERMISTOR LEAD WIRE (SUBCOOLING GAS PIPE) S1NPH RXYSQ-PA7Y1B : R4T (CONNECTOR COLOR : RED) (CONNECTOR COLOR : WHITE) (LOW VOLTAGE) R3T THERMISTOR (SUCTION 1) (MARKING COLOR : RED) SOLENOID VALVE LEAD WIRE Y1S 4 WAY VALVE LEAD WIRE...

  • Page 56: Rxysq4 / 5 / 6Pa7V1B

    SiBE34-802 Functional Parts Layout RXYSQ4 / 5 / 6PA7V1B Birds-eye view Y2S SOLENOID VALVE (CONNECTOR COLOR : BLACK) (HIGH VOLTAGE) S1NPH PRESSURE SENSOR (HIGH) LEAD WIRE (CONNECTOR COLOR : RED) (LOW VOLTAGE) Y1S 4 WAY VALVE LEAD WIRE (CONNECTOR COLOR : BLUE) (HIGH VOLTAGE) R3T THERMISTOR (SUCTION 1) (MARKING COLOR : RED)

  • Page 57: Back View

    Functional Parts Layout SiBE34-802 Back view R6T THERMISTOR (SUBCOOLING) (MARKING COLOR : WHITE) R3T THERMISTOR (SUCTION 1) (MARKING COLOR : RED) R5T THERMISTOR (SUCTION 2) (MARKING COLOR : GREEN) R1T THERMISTOR (AIR) (MARKING COLOR : YELLOW) R8T THERMISTOR (LIQUID PIPE 2) (CONNECTOR COLOR : WHITE) R4T THERMISTOR (HEAT EXCHANGER) (CONNECTOR COLOR : BLUE)

  • Page 58: Part 5 Function

    SiBE34-802 Part 5 Function 1. Operation Mode ..................48 2. Basic Control..................49 2.1 Normal Operation ...................49 2.2 Compressor PI Control................50 2.3 Electronic Expansion Valve PI Control...........51 2.4 Cooling Operation Fan Control...............52 3. Special Control..................53 3.1 Startup Control ..................53 3.2 Oil Return Operation ................54 3.3 Defrosting Operation ................56 3.4 Pump-down Residual Operation ............57 3.5 Restart Standby..................58...

  • Page 59: Operation Mode

    Operation Mode SiBE34-802 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 • Cooling startup Pump-down control residual...

  • Page 60: Basic Control

    SiBE34-802 Basic Control 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 61: Compressor Pi Control

    Basic Control SiBE34-802 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 62: Electronic Expansion Valve Pi Control

    SiBE34-802 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 63: Cooling Operation Fan Control

    Basic Control SiBE34-802 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. ≥ Furthermore, when outdoor temperature 20°C, the compressor will run in Step 7 or higher.

  • Page 64: Special Control

    SiBE34-802 Special Control Special Control Startup Control This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor, thus reducing startup loads. Furthermore, the inverter is turned ON to charge the capacitor. In addition, to avoid stresses to the compressor due to oil return or else after the startup, the following control is made and the position of the four way valve is also determined.

  • Page 65: Oil Return Operation

    Special Control SiBE34-802 Oil Return Operation In order to prevent the compressor from running out of oil, the oil return operation is conducted to recover oil flown out from the compressor to the system side. 3.2.1 Oil Return Operation in Cooling Operation [Start conditions] Referring to the set conditions for the following items, start the oil return operation in cooling.
  • Page 66 SiBE34-802 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 67: Defrosting Operation

    Special Control SiBE34-802 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 68: Pump-Down Residual Operation

    SiBE34-802 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 69: Restart Standby

    Special Control SiBE34-802 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 70: Stopping Operation

    SiBE34-802 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 (EV3) 0 pls...

  • Page 71: Protection Control

    Protection Control SiBE34-802 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>3.47MPa High pressure not limited...

  • Page 72: Low Pressure Protection Control

    SiBE34-802 Protection Control 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 Pe<0.25MPa Pe>0.39MPa Low pressure Hot gas SVP = OFF limited Pe<0.15MPa...

  • Page 73: Discharge Pipe Protection Control

    Protection Control SiBE34-802 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] Discharge pipe protection HTdi :Value of INV compressor discharge pipe control not limited temperature (Tdi) compensated with outdoor air temperature...

  • Page 74: Inverter Protection Control

    SiBE34-802 Protection Control 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 ≤ 12A &...

  • Page 75: Other Control

    Other Control SiBE34-802 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”. To operate the unit with this mode, additional setting of “Continuous Demand Setting”. [Demand 1 setting] Setting Standard for upper limit of power consumption...

  • Page 76: Outline Of Control (Indoor Unit)

    SiBE34-802 Outline of Control (Indoor Unit) 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 ∗...
  • Page 77 Outline of Control (Indoor Unit) SiBE34-802 6.1.3 When the Float Switch is Tripped During Heating Operation: 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. 6.1.4 When the Float Switch is Tripped and “AF”...

  • Page 78: Louver Control For Preventing Ceiling Dirt

    SiBE34-802 Outline of Control (Indoor Unit) 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 79: Thermostat Sensor In Remote Controller

    Outline of Control (Indoor Unit) SiBE34-802 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.”...
  • Page 80 SiBE34-802 Outline of Control (Indoor Unit) 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 81: Freeze Prevention

    Outline of Control (Indoor Unit) SiBE34-802 Freeze Prevention Freeze When the temperature detected by liquid pipe temperature thermistor (R2T) of the indoor unit heat exchanger drops too low, the unit enters freeze prevention operation in accordance with Prevention by Off the following conditions, and is also set in accordance with the conditions given below.

  • Page 82: View Of Operations Of Swing Flaps

    SiBE34-802 Outline of Control (Indoor Unit) 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 83: Electronic Expansion Valve Control

    Outline of Control (Indoor Unit) SiBE34-802 Electronic Expansion Valve Control • Electronic expansion Valve Control In cooling, to maximize the capacity of indoor unit heat exchanger (evaporator), operate the electronic expansion valve under PI control so that the evaporator outlet superheated degree (SH) will become constant.

  • Page 84: Part 6 Test Operation

    SiBE34-802 Part 6 Test Operation Test Operation ..................74 Procedure and Outline ................74 Operation when Power is Turned On .............85 Outdoor Unit PC Board Layout .............86 Field Setting ..................87 Field Setting from Remote Controller .............87 Field Setting from Outdoor Unit............104 Test Operation...

  • Page 85: Test Operation

    Test Operation SiBE34-802 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 three-phase 380-415V / 50Hz? Check the below items. Have you finished a ductwork to drain? 2Power wiring Have you detach transport fitting?

  • Page 86: Air Tight Test And Vacuum Drying

    SiBE34-802 Test Operation 1.1.3 Air Tight Test and Vacuum Drying Air tight test: Make sure to use nitrogen gas. Pressurize the liquid and gas pipes to 4.0 MPa (40 bar) (do not pressurize more than 4.0 MPa (40 bar)). If the pressure does not drop within 24 hours, the system passes the test. If the pressure drops, check where the nitrogen leaks from.

  • Page 87: Important Information Regarding The Refrigerant Used

    Test Operation SiBE34-802 To avoid compressor breakdown. Do not charge the refrigerant more than the specified amount. This outdoor unit is factory charged with refrigerant and depending on pipe sizes and pipe lengths some systems require additional charging of refrigerant. See "How to calculate the additional refrigerant to be charged"...
  • Page 88 SiBE34-802 Test Operation 1.1.4.2 Procedures for adding refrigerant Procedure 1: Adding refrigerant by using the automatic refrigerant charging function (recommended) How to connect the tank? Liquid line stop valve Gas line stop valve Liquid line stop valve Service port for Gas line stop valve adding refrigerant Valve A...
  • Page 89 Test Operation SiBE34-802 Led state Throughout the manual the state of the leds is indicated as follows: blinking ON or OFF If H2P is lit up, check the type of error based on the error code in the remote controller and correct the error in accordance with “1.1.5 Check Operation”...
  • Page 90 SiBE34-802 Test Operation 4.4 The led indication becomes as shown in the table below during automatic refrigerant charging. During automatic refrigerant charging, the remote controller indicates TEST (test operation) (external control). H1P H2P H3P H4P H5P H6P H7P Note If the led display below appears, the refrigerant tank is empty. Replace the refrigerant tank, open valve A and re-charge.
  • Page 91 Test Operation SiBE34-802 Case 4: Failure Error code on remote H1P H2P H3P H4P H5P H6P H7P controller See footnote (*) An error in the system interrupted the operation of the unit. Check the error by using the error code displayed on the remote controller. For an explanation of the error codes, see "Error codes on the remote controller"...
  • Page 92 SiBE34-802 Test Operation To avoid compressor breakdown. Do not charge the refrigerant more than the specified amount. If the total refrigerant cannot be charged while the outdoor unit is at a standstill, it is possible to charge the refrigerant by operating the outdoor unit using the refrigerant charge function (refer to “Setting mode 2”...
  • Page 93 Test Operation SiBE34-802 1.1.5 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.) Set to setting mode 1 (H1P led is off) (refer to "Setting mode 1"...
  • Page 94 SiBE34-802 Test Operation Malfunction code In case of an alarm code displayed on remote controller: Malfunction Nonconformity during installation Remedial action code The shutoff valve of an outdoor unit is left Open the gas-side shutoff valve and the liquid-side shutoff valve. closed.
  • Page 95 Test Operation SiBE34-802 1.1.6 Confirmation on Normal Operation • Conduct normal unit operation after the check operation has been completed. (When outdoor air temperature is 24°CDB or higher, the unit can not be operated with heating mode. See the installation manual attached.) •...

  • Page 96: Operation When Power Is Turned On

    SiBE34-802 Test Operation 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 97: Outdoor Unit Pc Board Layout

    Outdoor Unit PC Board Layout SiBE34-802 Outdoor Unit PC Board Layout RXYSQ4 / 5 / 6PA7Y1B RXYSQ4 / 5 / 6PA7V1B Test Operation...

  • Page 98: Field Setting

    SiBE34-802 Field Setting 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 99 Field Setting SiBE34-802 BRC1D528 UNIT NO. FIRST MODE NO. CODE NO. UNIT No. SECOND FIELD GROUP SETTING CODE NO. MODE If optional accessories are mounted on the indoor unit, the indoor unit setting may have to be changed. Refer to the instruction manual for each optional accessory. 1.
  • Page 100 SiBE34-802 Field Setting 3.1.2 Wireless Remote Controller - Indoor Unit BRC7 type BRC4 type 1. When in the normal mode, push the “ ” button for 4 seconds or more, and operation then enters the “field set mode.” 2. Select the desired “mode No.” with the “ ”...
  • Page 101 Field Setting SiBE34-802 3.1.3 Simplified Remote Controller BRC2C51 1. Remove the upper part of remote controller. 2. When in the normal mode, press the [BS6] BUTTON ( ) (field set), and the FIELD SET MODE is entered. ▲ 3. Select the desired MODE No. with the [BS2] BUTTON ( ) (temperature setting ) and the ▼...
  • Page 102 SiBE34-802 Field Setting 3.1.4 Setting Contents and Code No. – VRV Indoor unit Mode Second Code No.(Note 3) Setting Details Switch Setting Contents Note 2 Super Approx. Approx. Filter contamination long life 10,000 5,000 heavy/light (Setting for filter hrs. hrs. display time to clean air filter) Approx.
  • Page 103 Field Setting SiBE34-802 3.1.5 Applicable range of Field setting Ceiling mounted cassette Slim Ceiling Ceiling Ceiling Wall Floor Concealed New Ceiling Details type Ceiling mounted Mounted suspended mounted standing Floor suspended mounted built-in duct type type type type standing cassette Round Double Corner...

  • Page 104: Detailed Explanation Of Setting Modes

    SiBE34-802 Field Setting 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. Standard Long Life Ultra Long Life Filter Setting Contamination Light 200 hrs.
  • Page 105 Field Setting SiBE34-802 (5) Airflow Adjustment (AUTO) External Static Pressure Settings Make settings in either method (a) or method (b) as explained below. (a) Use the airflow auto adjustment function to make settings. Airflow auto adjustment: The volume of blow-off air is automatically adjusted to the rated quantity.
  • Page 106 SiBE34-802 Field Setting (8) Thermostat Switching Differential value during thermostat ON/OFF control can be changed. Mode No. First Code No. Second Code No. Differential value 1ºC 12(22) 0.5ºC (9) Air Flow Setting When Heating Thermostat is OFF This setting is used to set air flow when heating thermostat is OFF. ∗...
  • Page 107 Field Setting SiBE34-802 (13) Setting of Normal Air Flow 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 Setting Switch Setting Position Mode No. Setting Wall-mounted type: Standard 13(23)
  • Page 108 SiBE34-802 Field Setting In the Case of FXUQ71~125 First Second Ceiling height Mode code code Setting 4-way Outlets 3-way Outlets 2-way Outlets Standard (N) Lower than 2.7 m Lower than 3.0 m Lower than 3.5 m 13 (23) High Ceiling (H) Lower than 3.0 m Lower than 3.5 m Lower than 3.8 m Higher Ceiling (S) Lower than 3.5 m Lower than 3.8 m —...
  • Page 109 Field Setting SiBE34-802 (18) External Static Pressure Settings (for FXMQ-P model) MODE NO. FIRST CODE NO. SECOND CODE NO. External Static Pressure 30Pa (*1) 50Pa 60Pa 70Pa 80Pa 90Pa 100Pa 13 (23) 110Pa 120Pa 130Pa 140Pa 150Pa 160Pa 180Pa (*2) 200Pa (*2) The “SECOND CODE NO.”...
  • Page 110 SiBE34-802 Field Setting (22) Individual Setting of Ventilation This is set to perform individual operation of heat reclaim ventilation using the remote controller/ central unit when heat reclaim ventilation is built in. (Switch only when heat reclaim ventilation is built in.) Mode No.
  • Page 111 Field Setting SiBE34-802 3.1.7 Centralized Control Group No. Setting BRC1C Type In order to conduct the central remote control using the central remote controller and the unified ON/OFF controller, Group No. settings should be made by group using the operating remote controller.
  • Page 112 SiBE34-802 Field Setting BRC7 Type Group No. setting by wireless remote controller for centralized control 1. When in the normal mode, push “ ” button for 4 seconds or more, and operation then BRC4 Type enters the “field set mode.” 2.
  • Page 113 Field Setting SiBE34-802 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 114 SiBE34-802 Field Setting How to Select Whether operation by remote controller will be possible or not for turning on/off, controlling temperature or setting operation mode is selected and decided by the operation mode given on Operation Mode the right edge of the table below. Example ON by remote OFF by remote...

  • Page 115: Field Setting From Outdoor Unit

    Field Setting SiBE34-802 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 remote DS1-1 change over controller equipped with outdoor unit.
  • Page 116 SiBE34-802 Field Setting Caution Capacity Setting after changing the main PC Board(A1P) to spare parts PC Board When you change the main PC Board(A1P) to spare parts PC Board, please carry out the following setting. Please Attach the Capacity Setting Adaptor corresponding to Capacity Class (ex. 112, 140, 160) in connector X51A. (See Below) Capacity Setting Adaptor Capacity Class...
  • Page 117 Field Setting SiBE34-802 Setting by pushbutton switches The following settings are made by pushbutton switches on PC board. LED indication (Factory setting) 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.
  • Page 118 SiBE34-802 Field Setting a. “Setting mode 1” This mode is used to set and check the following items. 1. Set items ············ In order to make COOL/HEAT selection in a batch of outdoor unit group, change the setting. • COOL/HEAT selection (IND) ·····················Used to select COOL or HEAT by individual outdoor unit (factory set).
  • Page 119 Field Setting SiBE34-802 b. “Setting mode 2” Setting item Description Cool/heat unified Sets address for cool/heat unified operation. Push and hold the MODE (BS1) address button for 5 seconds and set to Low noise/demand Address for low noise/demand operation “Setting mode 2”. address Used to conduct test operation without making changes Test operation...
  • Page 120 SiBE34-802 Field Setting Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set 8777777 ∗ Address Binary number 8777778 Cool / Heat Unified address (6 digits) 8788888 8777777 ∗ Address Binary number 8777778 Low noise/demand address...
  • Page 121 Field Setting SiBE34-802 Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set Level 1 (outdoor fan with 6 step or lower) 8777778 8777787 ∗ 25 Low noise setting Level 2 (outdoor fan with 5 step or lower) Level 3 (outdoor fan with 4 step or lower) 8777877 About 20:00...
  • Page 122 SiBE34-802 Field Setting c. Monitor mode LED display Setting item Data display H2P H3P H5P H6P To enter the monitor mode, push the 9 7 7 7 7 7 7 Various setting See below MODE (BS1) button when in “Setting mode 1”. 9 7 7 7 7 7 8 C/H unified address 9 7 7 7 7 8 7...
  • Page 123 Field Setting SiBE34-802 Push the SET button and match with the LEDs No. 1 - 15, push the RETURN button, and confirm the data for each setting. ★ Data such as addresses and number of units is expressed as binary numbers; the two ways of expressing are as follows: The No.
  • Page 124 SiBE34-802 Field Setting 3.2.2 Cool / Heat Mode Switching There are the following 4 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 125 Field Setting SiBE34-802 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 OUT (factory set). Set cool/heat switching to IND (individual) for “Setting mode 1”...
  • Page 126 SiBE34-802 Field Setting 3.2.3 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. When the low noise operation is carried out automatically at night (The external control adaptor for outdoor unit is not required) 1.
  • Page 127 Field Setting SiBE34-802 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. Set item Condition Content Demand...
  • Page 128 SiBE34-802 Field Setting 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 1 is entered and H1P off. During the setting mode 1 is displayed, “In low noise operation” and “In demand control” are displayed.
  • Page 129 Field Setting SiBE34-802 : ON : OFF : Blink 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 External low noise / (Factory...
  • Page 130 SiBE34-802 Field Setting 3.2.4 Setting of Refrigerant Additional Charging Operation When the outdoor unit is stopped and the entire quantity of refrigerant cannot be charged from the stop valve on the liquid side, make sure to charge the remaining quantity of refrigerant using this procedure. If the refrigerant quantity is insufficient, the unit may malfunction.
  • Page 131 Field Setting SiBE34-802 3.2.5 Setting of Refrigerant Recovery Mode When carrying out the refrigerant collection on site, fully open the respective expansion valve of indoor and outdoor units All indoor and outdoor unit’s operation are prohibited. [Operation procedure] In “Setting Mode 2” with units in stop mode, set “B Refrigerant Recovery / Vacuuming mode” to ON.
  • Page 132 SiBE34-802 Field Setting 3.2.6 Setting of Vacuuming Mode In order to perform vacuuming operation at site, fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves. [Operating procedure] In “Setting Mode 2” with units in stop mode, set “B Refrigerant Recovery / Vacuuming mode” to ON.
  • Page 133 Field Setting SiBE34-802 Test Operation...

  • Page 134: Part 7 Troubleshooting

    SiBE34-802 Part 7 Troubleshooting 1. Symptom-based Troubleshooting ............125 2. Troubleshooting by Remote Controller ..........128 2.1 The INSPECTION / TEST Button............128 2.2 Self-diagnosis by Wired Remote Controller .........129 2.3 Self-diagnosis by Wireless Remote Controller ........130 2.4 Operation of the Remote Controller’s Inspection / Test Operation Button ................132 2.5 Remote Controller Service Mode ............133 2.6 Remote Controller Self-Diagnosis Function .........135...
  • Page 135 SiBE34-802 3.29 “J6” Outdoor Unit: Malfunction of Thermistor (R6T) ......177 3.30 “J7” Outdoor Unit: Malfunction of Thermistor (R7T) for Outdoor Unit Liquid Pipe ..............178 3.31 “J9” Outdoor Unit: Malfunction of Thermistor (R4T) ......179 3.32 “JA” Outdoor Unit: Malfunction of High Pressure Sensor......180 3.33 “JC”...

  • Page 136: Symptom-Based Troubleshooting

    SiBE34-802 Symptom-based Troubleshooting 1. Symptom-based Troubleshooting Symptom Supposed Cause Countermeasure The system does not start operation at all. Blowout of fuse(s) Turn Off the power supply and then replace the fuse(s). Cutout of breaker(s) • If the knob of any breaker is in its OFF position, turn ON the power supply.
  • Page 137 Symptom-based Troubleshooting SiBE34-802 Symptom Supposed Cause Countermeasure COOL-HEAT The remote controller displays This remote controller has no Use a remote controller with selection is "UNDER CENTRALIZED option to select cooling operation. option to select cooling operation. disabled. CONTROL". The remote controller displays COOL-HEAT selection is made Use the COOL-HEAT selection "UNDER CENTRALIZED...
  • Page 138 SiBE34-802 Symptom-based Troubleshooting Symptom Supposed Cause Countermeasure 11 The system These are operating sounds of Normal operation. produces Immediately after turning ON the electronic expansion valve of This sound becomes low after a sounds. the power supply, indoor unit the indoor unit.

  • Page 139: Troubleshooting By Remote Controller

    Troubleshooting by Remote Controller SiBE34-802 2. Troubleshooting by Remote Controller The INSPECTION / TEST Button The following modes can be selected by using the [Inspection/Test Operation] button on the remote control. Depress Inspection/Test Operation button for more than 4 seconds. Indoor unit settings can be made Service data can be obtained.

  • Page 140: Self-Diagnosis By Wired Remote Controller

    SiBE34-802 Troubleshooting by Remote Controller 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 141: Self-Diagnosis By Wireless Remote Controller

    Troubleshooting by Remote Controller SiBE34-802 Self-diagnosis by Wireless Remote Controller In the Case of If equipment stops due to a malfunction, the operation indicating LED on the light reception section flashes. BRC7C Type The malfunction code can be determined by following the procedure described below. (The BRC7E Type malfunction code is displayed when an operation error has occurred.
  • Page 142 SiBE34-802 Troubleshooting by Remote Controller The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed. Troubleshooting...

  • Page 143: Operation Of The Remote Controller's Inspection / Test Operation Button

    Troubleshooting by Remote Controller SiBE34-802 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 144: Remote Controller Service Mode

    SiBE34-802 Troubleshooting by Remote Controller Remote Controller Service Mode How to Enter the Service Mode Service Mode 1. Select the mode No. Set the desired mode No. with the button. Operation (For wireless remote controller, Mode 43 only can be set.) Method 2.
  • Page 145 Troubleshooting by Remote Controller SiBE34-802 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 146: Remote Controller Self-Diagnosis Function

    SiBE34-802 Troubleshooting by Remote Controller Remote Controller Self-Diagnosis Function The remote controller switches are equipped with a self diagnosis function so that more appropriate maintenance can be carried out. If a malfunction occurs during operation, the operation lamp, malfunction code and display of malfunctioning unit No. let you know the contents and location of the malfunction.
  • Page 147 Troubleshooting by Remote Controller SiBE34-802 8: ON 7: OFF 9: Blink Malfunction Operation Malfunction contents Page code lamp Referred Indoor Unit Error of external protection device PC board defect, E PROM defect Malfunction of drain level control system (S1L) Fan motor (M1F) lock, overload Malfunction of swing flap motor (M1S) Abnormal power supply voltage Malfunction of moving part of electronic expansion valve (Y1E)
  • Page 148 SiBE34-802 Troubleshooting by Remote Controller 8: ON 7: OFF 9: Blink Malfunction Operation Malfunction contents Page code lamp Referred Outdoor Unit Malfunction of power unit — Malfunction of transmission between inverter and control PC board High voltage of capacitor in main inverter circuit. System Low pressure drop due to refrigerant shortage or electronic expansion valve failure...
  • Page 149 Troubleshooting by Remote Controller SiBE34-802 Malfunction code indication by outdoor unit PC board Contents of malfunction Malfunction To enter the monitor mode, push the code MODE (BS1) button when in In-phase malfunction of DIII Net Detection of DIII Net “Setting mode 1”.
  • Page 150 SiBE34-802 Troubleshooting by Remote Controller 8: ON 7: OFF 9:Blink Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Malfunction code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P ∗...
  • Page 151 Troubleshooting by Remote Controller SiBE34-802 Contents of malfunction Malfunction To enter the monitor mode, push the code MODE (BS1) button when in Open phase/Power supply imbalance Imbalance of inverter power supply “Setting mode 1”. voltage Faulty temperature sensor of inverter Faulty thermistor of inverter fin radiation fin Refrigerant shortage...
  • Page 152 SiBE34-802 Troubleshooting by Remote Controller 8: ON 7: OFF 9:Blink Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Malfunction code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P ∗...

  • Page 153: Troubleshooting By Indication On The Remote Controller

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3. Troubleshooting by Indication on the Remote Controller “ ” Indoor Unit: Error of External Protection Device Remote Controller Display Applicable All indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Actuation of external protection device...

  • Page 154: A1" Indoor Unit

    SiBE34-802 Troubleshooting by Indication on the Remote Controller “ ” 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 E²PROM : Type of nonvolatile memory.

  • Page 155: A3" Indoor Unit: Malfunction Of Drain Level Control System (S1L)

    Troubleshooting by Indication on the Remote Controller SiBE34-802 “ ” Indoor Unit: Malfunction of Drain Level Control System (S1L) Remote Controller Display Applicable FXCQ, FXFQ, FXZQ, FXKQ, FXSQ, FXMQ, FXHQ (Option), FXAQ (Option) Models Method of By float switch OFF detection Malfunction Detection Malfunction...
  • Page 156 SiBE34-802 Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is power supply Provide 220~240V power 220~240V provided? supply. The float A short switch is connected to circuit connector is Connect either a short circuit...

  • Page 157: A6" Indoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE34-802 “ ” 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 158: A7" Indoor Unit: Malfunction Of Swing Flap Motor (M1S)

    SiBE34-802 Troubleshooting by Indication on the Remote Controller “ ” Indoor Unit: Malfunction of Swing Flap Motor (M1S) Remote Controller Display Applicable FXCQ, FXKQ, FXZQ, FXHQ, FXUQ Models Method of Utilizes ON/OFF of the limit switch when the motor turns. Malfunction Detection Malfunction...
  • Page 159 Troubleshooting by Indication on the Remote Controller SiBE34-802 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is power supply Provide 220~240V power 220~240V provided? supply. Indoor unit is a model equipped Replace indoor unit PC board.

  • Page 160: Abnormal Power Supply Voltage

    SiBE34-802 Troubleshooting by Indication on the Remote Controller Abnormal Power Supply Voltage Remote Controller Display Applicable FXMQ40~125P Models Method of Detect malfunction checking the input voltage of fan motor. Malfunction Detection Malfunction When the input voltage of fan motor is 150V and below, or 386V and above. Decision Conditions Supposed...

  • Page 161: A9" Indoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE34-802 “ ” Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E) Remote Controller Display Applicable All indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Malfunction of moving part of electronic expansion valve Defect of indoor unit PC board Causes Defect of connecting cable...
  • Page 162 SiBE34-802 Troubleshooting by Indication on the Remote Controller ∗ 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.

  • Page 163: Af" Indoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE34-802 “ ” Indoor Unit: Drain Level above Limit Remote Controller Display Applicable FXCQ, FXSQ, FXKQ, FXMQ, FXDQ Models Method of Water leakage is detected based on float switch ON/OFF operation while the compressor is in non-operation.

  • Page 164: Aj" Indoor Unit: Malfunction Of Capacity Determination Device

    SiBE34-802 Troubleshooting by Indication on the Remote Controller “ ” 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 165: C1" Indoor Unit: Failure Of Transmission

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.10 “ ” Indoor Unit: Failure of Transmission (Between Indoor unit PC Board and Fan PC Board) Remote Controller Display Applicable FXMQ40~125P Models Method of Check the condition of transmission between indoor PC board (A1P) and PC board for fan (A2P) using computer.
  • Page 166 SiBE34-802 Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is the connector between indoor PC board (A1P) and Connect the connector PC board for fan (A2P) accurately connected? accurately.

  • Page 167: C4" Indoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.11 “ ” 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 168: C5" Indoor Unit: Malfunction Of Thermistor (R3T) For Gas Pipes

    SiBE34-802 Troubleshooting by Indication on the Remote Controller 3.12 “ ” 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 169: C6" Indoor Unit: Failure Of Combination

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.13 “ ” Indoor Unit: Failure of Combination (Between Indoor unit PC Board and Fan PC Board) Remote Controller Display Applicable FXMQ40~125P Models Method of Conduct open line detection with PC board for fan (A2P) using indoor PC board (A1P). Malfunction Detection Malfunction...

  • Page 170: C9" Indoor Unit: Malfunction Of Thermistor (R1T) For Suction Air

    SiBE34-802 Troubleshooting by Indication on the Remote Controller 3.14 “ ” 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 thermistor.

  • Page 171: Ca" Indoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.15 “ ” Indoor Unit: Malfunction of Thermistor for Discharge Air Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction detection is carried out by temperature detected by discharge air temperature thermistor.

  • Page 172: Cc" Indoor Unit: Malfunction Of Humidity Sensor System

    SiBE34-802 Troubleshooting by Indication on the Remote Controller 3.16 “ ” Indoor Unit: Malfunction of Humidity Sensor System Remote Controller Display Applicable FXFQ Models Method of Even if a malfunction occurs, operation still continues. Malfunction is detected according to the moisture (output voltage) detected by the moisture Malfunction sensor.

  • Page 173: Cj" Indoor Unit: Malfunction Of Thermostat Sensor In

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.17 “ ” 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 temperature thermistor.

  • Page 174: E1" Outdoor Unit: Pc Board Defect

    SiBE34-802 Troubleshooting by Indication on the Remote Controller 3.18 “ ” Outdoor Unit: PC Board Defect Remote Controller Display Applicable RXYSQ4~6PA Models Method of Check data from E²PROM Malfunction Detection Malfunction When data could not be correctly received from the E²PROM E²PROM : Type of nonvolatile memory.

  • Page 175: E3" Outdoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.19 “ ” Outdoor Unit: Actuation of High Pressure Switch Remote Controller Display Applicable RXYSQ4~6PA Models Method of Abnormality is detected when the contact of the high pressure protection switch opens. Malfunction Detection Malfunction Error is generated when the HPS activation count reaches the number specific to the operation...
  • Page 176 SiBE34-802 Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check for the points shown below. Is the stop valve open? Is the HPS connector properly connected to the main PC board? Does the high pressure switch have continuity? Are the...

  • Page 177: E4" Outdoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.20 “ ” Outdoor Unit: Actuation of Low Pressure Sensor Remote Controller Display Applicable RXYSQ4~6PA Models Method of Abnormality is detected by the pressure value with the low pressure sensor. Malfunction Detection Malfunction Error is generated when the low pressure is dropped under specific pressure.
  • Page 178 SiBE34-802 Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is the stop Open the stop valve. valve open? Mount a pressure gauge on the low-pressure service port. Connect the Service Checker.

  • Page 179: Inverter Compressor Motor Lock

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.21 “ ” Inverter Compressor Motor Lock Remote Controller Display Applicable RXYSQ4~6PA Models Method of Inverter PC board takes the position signal from UVW line connected between the inverter and compressor, and the malfunction is detected when any abnormality is observed in the phase- Malfunction current waveform.

  • Page 180: Malfunction Of Outdoor Unit Fan Motor

    SiBE34-802 Troubleshooting by Indication on the Remote Controller “ ” 3.22 Malfunction of Outdoor Unit Fan Motor Remote Controller Display Applicable RXYSQ4~6PA Models Method of Malfunction of fan motor system is detected according to the fan speed detected by hall IC when the fan motor runs.

  • Page 181: E9" Outdoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.23 “ ” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E, Y3E) Remote Controller Display Applicable RXYSQ4~6PA Models Method of Check disconnection of connector Check continuity of expansion valve coil Malfunction Detection Malfunction...
  • Page 182 SiBE34-802 Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn power supply off, and turn power supply on again. Return to normal? External factor other than malfunction (for example, noise etc.).

  • Page 183: F3" Outdoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.24 “ ” Outdoor Unit: Abnormal Discharge Pipe Temperature Remote Controller Display Applicable RXYSQ4~6PA Models Method of Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor. Malfunction Detection Malfunction When the discharge pipe temperature rises to an abnormally high level...

  • Page 184: Outdoor Unit: Refrigerant Overcharged

    SiBE34-802 Troubleshooting by Indication on the Remote Controller 3.25 “ ” Outdoor Unit: Refrigerant Overcharged Remote Controller Display Applicable RXYSQ4~6PA Models Method of Excessive charging of refrigerant is detected by using the heat exchanging deicer temperature during a check operation. Malfunction Detection Malfunction...

  • Page 185: H9" Outdoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.26 “ ” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air Remote Controller Display Applicable RXYSQ4~6PA Models Method of Malfunction is detected from the temperature detected by the outdoor air thermistor. Malfunction Detection Malfunction...

  • Page 186: J3" Outdoor Unit

    SiBE34-802 Troubleshooting by Indication on the Remote Controller 3.27 “ ” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R2T) Remote Controller Display Applicable RXYSQ4~6PA Models Method of Malfunction is detected from the temperature detected by discharge pipe temperature thermistor. Malfunction Detection Malfunction When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.

  • Page 187: Suction Pipe 1, 2

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.28 “ ” Outdoor Unit: Malfunction of Thermistor (R3T, R5T) for Suction Pipe 1, 2 Remote Controller Display Applicable RXYSQ4~6PA Models Method of Malfunction is detected from the temperature detected by the thermistor for suction pipe 1, 2. Malfunction Detection Malfunction...

  • Page 188: J6" Outdoor Unit

    SiBE34-802 Troubleshooting by Indication on the Remote Controller 3.29 “ ” Outdoor Unit: Malfunction of Thermistor (R6T) Remote Controller Display Applicable RXYSQ4~6PA Models Method of Malfunction is detected from the temperature detected by the heat exchanger thermistor. Malfunction Detection Malfunction When a short circuit or an open circuit in the heat exchange thermistor is detected.

  • Page 189: J7" Outdoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.30 “ ” Outdoor Unit: Malfunction of Thermistor (R7T) for Outdoor Unit Liquid Pipe Remote Controller Display Applicable RXYSQ4~6PA Models Method of Malfunction is detected from the temperature detected by the liquid pipe thermistor. Malfunction Detection Malfunction...

  • Page 190: J9" Outdoor Unit

    SiBE34-802 Troubleshooting by Indication on the Remote Controller 3.31 “ ” Outdoor Unit: Malfunction of Thermistor (R4T) Remote Controller Display Applicable RXYSQ4~6PA Models Method of Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor. Malfunction Detection Malfunction...

  • Page 191: Ja" Outdoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.32 “ ” Outdoor Unit: Malfunction of High Pressure Sensor Remote Controller Display Applicable RXYSQ4~6PA Models Method of Malfunction is detected from the pressure detected by the high pressure sensor. Malfunction Detection Malfunction When the high pressure sensor is short circuit or open circuit.

  • Page 192: Jc" Outdoor Unit

    SiBE34-802 Troubleshooting by Indication on the Remote Controller 3.33 “ ” Outdoor Unit: Malfunction of Low Pressure Sensor Remote Controller Display Applicable RXYSQ4~6PA 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. Decision Conditions Supposed...

  • Page 193: L1" Outdoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.34 “ ” Outdoor Unit: Malfunction of PC Board Remote Controller Display Applicable RXYSQ4~6PA Models Method of Detect malfunctions by current value during waveform output before compressor startup. Detect malfunctions by current sensor value during synchronized operation at the time of Malfunction startup.

  • Page 194: L4" Outdoor Unit: Malfunction Of Inverter Radiating Fin

    SiBE34-802 Troubleshooting by Indication on the Remote Controller 3.35 “ ” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Remote Controller Display Applicable RXYSQ4~6PA Models Method of Fin temperature is detected by the thermistor of the radiation fin. Malfunction Detection Malfunction When the temperature of the inverter radiation fin increases above 83°C.

  • Page 195: L5" Outdoor Unit: Inverter Compressor Abnormal

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.36 “ ” Outdoor Unit: Inverter Compressor Abnormal Remote Controller Display Applicable RXYSQ4~6PA 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. (Instantaneous overcurrent also causes activation.) Decision Conditions...

  • Page 196: L8" Outdoor Unit: Inverter Current Abnormal

    SiBE34-802 Troubleshooting by Indication on the Remote Controller 3.37 “ ” Outdoor Unit: Inverter Current Abnormal Remote Controller Display Applicable RXYSQ4~6PA 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 Supposed...

  • Page 197: L9" Outdoor Unit: Inverter Start Up Error

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.38 “ ” Outdoor Unit: Inverter Start up Error Remote Controller Display Applicable RXYSQ4~6PA 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 Supposed...

  • Page 198: Lc" Outdoor Unit: Malfunction Of Transmission Between

    SiBE34-802 Troubleshooting by Indication on the Remote Controller 3.39 “ ” Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board Remote Controller Display Applicable RXYSQ4~6PA Models Method of Check the communication state between inverter PC board and control PC board by micro- computer.

  • Page 199: P1" Outdoor Unit: High Voltage Of Capacitor In

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.40 “ ” Outdoor Unit: High Voltage of Capacitor in Main Inverter Circuit Remote Controller Display Applicable RXYSQ4~6PA Models Method of Malfunction is detected according to the voltage waveform of main circuit capacitor built in the inverter.

  • Page 200: Low Pressure Drop Due To Refrigerant Shortage Or Electronic Expansion Valve Failure

    SiBE34-802 Troubleshooting by Indication on the Remote Controller 3.41 “ ” Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure Remote Controller Display Applicable RXYSQ4~6PA Models Method of Short of gas malfunction is detected by discharge pipe temperature thermistor and low pressure saturation temperature.
  • Page 201 Troubleshooting by Indication on the Remote Controller SiBE34-802 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Low pressure Cooling Out of gas, closing of stop is 0.25 MPa or less.

  • Page 202: Power Supply Insufficient Or Instantaneous Failure

    SiBE34-802 Troubleshooting by Indication on the Remote Controller 3.42 “ ” Power Supply Insufficient or Instantaneous Failure Remote Controller Display Applicable RXYSQ4~6PA Models Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Detection Malfunction...
  • Page 203 Troubleshooting by Indication on the Remote Controller SiBE34-802 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Have the power supply voltages between L1 and L2, L2 and L3, and L1 and L3 fallen within the range of Correct the power supply 380 to 415V±10% (50 Hz) and between L...

  • Page 204: Check Operation Not Executed

    SiBE34-802 Troubleshooting by Indication on the Remote Controller “ ” 3.43 Check Operation not Executed Remote Controller Display Applicable RXYSQ4~6PA 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 Supposed...

  • Page 205: Malfunction Of Transmission Between Indoor Units And Outdoor Units

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.44 “ ” Malfunction of Transmission between Indoor Units and Outdoor Units Remote Controller Display Applicable AII indoor unit models RXYSQ4~6PA Models Method of Microcomputer checks if transmission between indoor and outdoor units is normal. Malfunction Detection Malfunction...
  • Page 206 SiBE34-802 Troubleshooting by Indication on the Remote Controller 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 207: U5" Malfunction Of Transmission Between Remote Controller And Indoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.45 “ ” 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 transmission between indoor unit and remote controller (main and sub) is normal.

  • Page 208: Malfunction Of Transmission Between Main And Sub Remote Controllers

    SiBE34-802 Troubleshooting by Indication on the Remote Controller 3.46 “ ” Malfunction of Transmission between Main and Sub 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 transmission between indoor unit and remote controller (main and sub) is normal.

  • Page 209: Malfunction Of Transmission Between Indoor And Outdoor Units In The Same System

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.47 “ ” 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 Supposed Malfunction of transmission within or outside of other system Malfunction of electronic expansion valve in indoor unit of other system Causes...

  • Page 210: Sibe34

    SiBE34-802 Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. " " has been displayed for 2 Re-diagnose by display after minutes or more. passage of 2 minutes or more.

  • Page 211: Ua" Excessive Number Of Indoor Units

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.48 “ ” Excessive Number of Indoor Units Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Excess of connected indoor units Defect of outdoor unit PC board (A1P) Causes Mismatching of the refrigerant type of indoor and outdoor unit.

  • Page 212: Uc" Address Duplication Of Central Remote Controller

    SiBE34-802 Troubleshooting by Indication on the Remote Controller 3.49 “ ” Address Duplication of Central Remote Controller Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Address duplication of centralized remote controller Defect of indoor unit PC board Causes Troubleshooting...

  • Page 213: Malfunction Of Transmission Between Central Remote Controller And Indoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.50 “ ” Malfunction of Transmission between Central Remote Controller and Indoor Unit Remote Controller Display Applicable AII indoor unit models Centralized controller Models Method of Microcomputer checks if transmission between indoor unit and centralized remote controller is normal.
  • Page 214 SiBE34-802 Troubleshooting by Indication on the Remote Controller 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 215: Uf" System Is Not Set Yet

    Troubleshooting by Indication on the Remote Controller SiBE34-802 3.51 “ ” System is not Set yet Remote Controller Display Applicable All models of indoor units RXYSQ4~6PA Models Method of On check operation, the number of indoor units in terms of transmission is not corresponding to that of indoor units that have made changes in temperature.

  • Page 216: Uh" Malfunction Of System, Refrigerant System Address Undefined

    SiBE34-802 Troubleshooting by Indication on the Remote Controller 3.52 “ ” Malfunction of System, Refrigerant System Address Undefined Remote Controller Display Applicable AII indoor unit models RXYSQ4~6PA Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Improper connection of transmission wiring between outdoor unit and outdoor unit outside control adaptor Causes Defect of indoor unit PC board...

  • Page 217: Troubleshooting By Indication On The Centralized Remote Controller

    Troubleshooting by Indication on the Centralized Remote Controller SiBE34-802 4. Troubleshooting by Indication on the Centralized Remote Controller “ ” Malfunction of Transmission between Centralized Remote Controller and Indoor Unit Remote Controller Display Applicable AII indoor unit models Centralized Remote Controller Models Method of Microcomputer checks if transmission between indoor unit and central remote controller is...

  • Page 218: M1" Pc Board Defect

    SiBE34-802 Troubleshooting by Indication on the Centralized Remote Controller “ ” PC Board Defect Remote Controller Display Applicable Centralized remote controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Defect of central remote controller PC board Causes Troubleshooting Replace the central remote controller PC board. Troubleshooting...

  • Page 219: Malfunction Of Transmission Between Optional Controllers For Centralized Control

    Troubleshooting by Indication on the Centralized Remote Controller SiBE34-802 “ ” Malfunction of Transmission between Optional Controllers for Centralized Control Remote Controller Display Applicable Centralized remote controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Malfunction of transmission between optional controllers for centralized control Defect of PC board of optional controllers for centralized control Causes Troubleshooting...

  • Page 220: Improper Combination Of Optional Controllerslers For Centralized Controllers

    SiBE34-802 Troubleshooting by Indication on the Centralized Remote Controller “ ” Improper Combination of Optional Controllers for Centralized Control Remote Controller Display Applicable Centralized remote controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Improper combination of optional controllers for centralized control More than one master controller is connected Causes Defect of PC board of optional controller for centralized control...
  • Page 221 Troubleshooting by Indication on the Centralized Remote Controller SiBE34-802 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 the wiring adaptor for adaptor for electrical electrical appendices appendices.

  • Page 222: Mc" Address Duplication, Improper Setting

    SiBE34-802 Troubleshooting by Indication on the Centralized Remote Controller “ ” Address Duplication, Improper Setting Remote Controller Display Applicable Centralized remote controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Address duplication of centralized remote controller Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 223: Troubleshooting By Indication On The Unified On/Off Controller

    Troubleshooting by Indication on the Unified ON/OFF Controller SiBE34-802 5. Troubleshooting by Indication on the Unified ON/ OFF Controller Operation Lamp Blinks Remote Operation lamp blinks Controller Display Applicable All models of indoor units Unified ON/OFF controller Models Method of Malfunction Detection Malfunction...
  • Page 224 SiBE34-802 Troubleshooting by Indication on the Unified ON/OFF Controller 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 225: Display "Under Host Computer Integrate Control" Blinks (Repeats Single Blink)

    Troubleshooting by Indication on the Unified ON/OFF Controller SiBE34-802 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 Central controller, Schedule timer Models Method of Malfunction Detection Malfunction...
  • Page 226 SiBE34-802 Troubleshooting by Indication on the Unified ON/OFF Controller 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 227 Troubleshooting by Indication on the Unified ON/OFF Controller SiBE34-802 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 228: Display "Under Host Computer Integrate Control" Blinks (Repeats Double Blink)

    SiBE34-802 Troubleshooting by Indication on the Unified ON/OFF Controller 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 Supposed...
  • Page 229 Troubleshooting by Indication on the Unified ON/OFF Controller SiBE34-802 [CHECK 1] Check for causes of rise in high pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. ←Check to be sure the stop valve is open. Stop valve closed Local High pipe...
  • Page 230 SiBE34-802 Troubleshooting by Indication on the Unified ON/OFF Controller [CHECK 2] Check for causes of drop in low pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. [In cooling] ←Are the electrical characteristics normal? Faulty low pressure sensor (See *1.) Faulty compressor...
  • Page 231 Troubleshooting by Indication on the Unified ON/OFF Controller SiBE34-802 [CHECK 3] Check for Fan Motor Connector (1) Turn the power supply off. (2) With the fan motor connector on motor side disconnected, measure the resistance between each pin, then make sure that the resistance is more than the value mentioned in the following table.

  • Page 232: Part 8 Appendix

    SiBE34-802 Part 8 Appendix 1. Piping Diagrams..................222 1.1 Outdoor Unit ..................222 1.2 Indoor Unit....................224 2. Wiring Diagrams..................227 2.1 Outdoor Unit ..................227 2.2 Field Wiring ..................229 2.3 Indoor Unit....................231 3. Option List ...................246 3.1 Option List of Controllers..............246 3.2 Option List of Outdoor Unit..............248 4.

  • Page 233: Piping Diagrams

    Piping Diagrams SiBE34-802 1. Piping Diagrams Outdoor Unit RXYSQ4 / 5 / 6PA7Y1B Appendix...
  • Page 234 SiBE34-802 Piping Diagrams RXYSQ4 / 5 / 6PA7V1B Appendix...

  • Page 235: Indoor Unit

    Piping Diagrams SiBE34-802 Indoor Unit FXCQ, FXFQ, FXZQ, FXKQ, FXSQ, FXMQ, FXHQ, FXAQ, FXLQ, FXNQ Gas piping connection port Heat exchanger Flare connection : φ15.9 or less Attached piping : Above φ19.1 Liquid piping connection port (Flare connection) Electronic Filter Filter expansion valve DU220-602J...
  • Page 236 SiBE34-802 Piping Diagrams FXDQ 4D043864H Refrigerant pipe connection port diameters (mm) Model Liquid φ12.7 φ6.4 FXDQ20 / 25 / 32 / 40 / 50 φ15.9 φ9.5 FXDQ63 Appendix...
  • Page 237 Piping Diagrams SiBE34-802 FXUQ + BEVQ Indoor Unit 4D037995F Connection Unit 4D034127B Appendix...

  • Page 238: Wiring Diagrams

    SiBE34-802 Wiring Diagrams 2. Wiring Diagrams Outdoor Unit RXYSQ4 / 5 / 6PA7Y1B Appendix...
  • Page 239 Wiring Diagrams SiBE34-802 RXYSQ4 / 5 / 6PA7V1B Appendix...

  • Page 240: Field Wiring

    SiBE34-802 Wiring Diagrams Field Wiring RXYSQ4 / 5 / 6PA7Y1B Appendix...
  • Page 241 Wiring Diagrams SiBE34-802 RXYSQ4 / 5 / 6PA7V1B Appendix...

  • Page 242: Indoor Unit

    SiBE34-802 Wiring Diagrams Indoor Unit FXCQ20M / 25M / 32M / 63MV3 Appendix...
  • Page 243 Wiring Diagrams SiBE34-802 FXCQ40M / 50M / 80M / 125MV3 Appendix...
  • Page 244 SiBE34-802 Wiring Diagrams FXFQ20P / 25P / 32P / 40P / 50P / 63P / 80P / 100P / 125P7VE Appendix...
  • Page 245 Wiring Diagrams SiBE34-802 FXZQ20M / 25M / 32M / 40M / 50MV1 Appendix...
  • Page 246 SiBE34-802 Wiring Diagrams FXKQ25MA / 32MA / 40MA / 63MAVE Appendix...
  • Page 247 Wiring Diagrams SiBE34-802 FXDQ20P / 25P / 32P FXDQ40NA / 50NA / 63NAVE (with Drain Pump) Appendix...
  • Page 248 SiBE34-802 Wiring Diagrams FXDQ20M8 / 25M8V3 Appendix...
  • Page 249 Wiring Diagrams SiBE34-802 FXSQ20M / 25M / 32M / 40M / 50M / 63M8V3 Appendix...
  • Page 250 SiBE34-802 Wiring Diagrams FXSQ80M / 100M / 125M8V3 Appendix...
  • Page 251 Wiring Diagrams SiBE34-802 FXMQ40P / 50P / 63P / 80P / 100P / 125PVE Appendix...
  • Page 252 SiBE34-802 Wiring Diagrams FXHQ32MA / 63MA / 100MAVE Appendix...
  • Page 253 Wiring Diagrams SiBE34-802 FXAQ20MA / 25MA / 32MAVE / 40MA / 50MA / 63MAVE Appendix...
  • Page 254 SiBE34-802 Wiring Diagrams FXLQ20MA / 25MA / 32MA / 40MA / 50MA / 63MAVE FXNQ20MA / 25MA / 32MA / 40MA / 50MA / 63MAVE Appendix...
  • Page 255 Wiring Diagrams SiBE34-802 FXUQ71MA / 100MA / 125MAV1 Appendix...
  • Page 256 SiBE34-802 Wiring Diagrams BEVQ71MA / 100MA / 125MAVE 3D044901B Appendix...

  • Page 257: Option List

    Option List SiBE34-802 Option List Option List of Controllers Operation Control System Optional Accessories Type FXDQ- FXFQ FXZQ FXCQ FXKQ FXDQ FXSQ FXMQ FXUQ FXHQ FXAQ FXLQ FXNQ Item Wired remote control BRC1D52 cooling only BRC7F533 BRC7E531 BRC7C67 BRC4C63 BRC4C64 BRC4C66 BRC7C529 BRC7E66 BRC7E619 BRC4C64 Infrared remote...
  • Page 258 SiBE34-802 Option List Building Management System Part name Model No. Function intelligent Touch • Air-Conditioning management system that can be controlled by a Basic Hardware DCS601C51 Controller compact all-in-one unit. Hardware DIII-NET plus adaptor DCS601A52 • Additional 64 groups (10 outdoor units) is possible. intelligent Touch Controller P.

  • Page 259: Option List Of Outdoor Unit

    Option List SiBE34-802 Option List of Outdoor Unit RXYSQ4 / 5 / 6P RXYSQ4PA7Y1B RXYSQ4PA7V1B Optional accessories RXYSQ5PA7Y1B RXYSQ5PA7V1B RXYSQ6PA7Y1B RXYSQ6PA7V1B Cool/Heat Selector KRC19-26A6 Fixing box KJB111A Refnet header KHRQ22M29H Refnet joint KHRQ22M20T Central drain plug KKPJ5F180 4TW26101 Appendix...

  • Page 260: Example Of Connection

    SiBE34-802 Example of Connection 4. Example of Connection Example of connection Branch with refnet joint Branch with refnet joint and refnet header Branch with refnet header (Connection of 8 indoor units Heat pump system) indoor unit refnet joint refnet header Pipe length between outdoor and indoor units 150 m Actual pipe length [Example] unit 8: a+b+c+d+e+f+g+p 150 m...
  • Page 261 Example of Connection SiBE34-802 Appendix...

  • Page 262: Thermistor Resistance / Temperature Characteristics

    SiBE34-802 Thermistor Resistance / Temperature Characteristics Thermistor Resistance / Temperature Characteristics Indoor unit For air suction For liquid pipe For gas pipe Outdoor unit For outdoor air Outdoor unit for fin thermistor For suction pipe 1 For heat exchanger R4T, R6T For suction pipe 2 For Subcooling heat exchanger outlet R6T, R4T For Liquid pipe...
  • Page 263 Thermistor Resistance / Temperature Characteristics SiBE34-802 Outdoor Unit Thermistors for Discharge Pipe (R2T) (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 264: Pressure Sensor

    SiBE34-802 Pressure Sensor Pressure Sensor = 1.38V-0.69 : Detected Pressure [High Side] MPa = 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) High Pressure (P Low Pressure (P...

  • Page 265: Method Of Replacing The Inverter's Power Transistors Modules

    Method of Replacing the Inverter’s Power Transistors Modules SiBE34-802 Method of Replacing the Inverter’s Power Transistors Modules Checking failures in power semiconductors mounted on inverter PC board Check the power semiconductors mounted on the inverter PC board by the use of a multiple tester.
  • Page 266 SiBE34-802 Method of Replacing the Inverter’s Power Transistors Modules Inverter PC board (RXYSQ4 / 5 / 6PA7V1B) C– Appendix...
  • Page 267 Method of Replacing the Inverter’s Power Transistors Modules SiBE34-802 Power module checking When using the digital type of multiple tester, make measurement in diode check mode. Tester terminal Criterion Remark Not less than 0.3V It may take time to (including ∞)* determine the voltage due to capacitor charge or else.

  • Page 268: Part 9 Precautions For New Refrigerant (R-410A)

    SiBE34-802 Part 9 Precautions for New Refrigerant (R-410A) 1. Precautions for New Refrigerant (R-410A) .........258 1.1 Outline ....................258 1.2 Refrigerant Cylinders................260 1.3 Service Tools..................261 Precautions for New Refrigerant (R-410A)

  • Page 269: Precautions For New Refrigerant (R-410A)

    Precautions for New Refrigerant (R-410A) SiBE34-802 Precautions for New Refrigerant (R-410A) Outline 1.1.1 About Refrigerant R-410A Characteristics of new refrigerant, R-410A 1. Performance Almost the same performance as R-22 and R-407C 2. Pressure Working pressure is approx. 1.4 times more than R-22 and R-407C. 3.
  • Page 270 SiBE34-802 Precautions for New Refrigerant (R-410A) Thermodynamic characteristic of R-410A Temperature Steam pressure Density Specific heat at constant Specific enthalpy Specific entropy (kPa) (kg/m pressure (kJ/kgK) (kJ/kg) (kJ/KgK) Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Precautions for New Refrigerant (R-410A)

  • Page 271: Refrigerant Cylinders

    Precautions for New Refrigerant (R-410A) SiBE34-802 Refrigerant Cylinders Cylinder specifications 2 The cylinder is painted refrigerant color (pink). 2 The cylinder valve is equipped with a siphon tube. Cylinder Refrigerant can be charged in liquid state with cylinder in upright position. Caution: Do not lay cylinder on its side during charging, since it cause refrigerant in gas state to enter the system.

  • Page 272: Service Tools

    SiBE34-802 Precautions for New Refrigerant (R-410A) Service Tools R-410A is used under higher working pressure, compared to previous refrigerants (R-22,R-407C). 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.
  • Page 273 Precautions for New Refrigerant (R-410A) SiBE34-802 1. Flaring tool Flare gauge Specifications 2 Dimension A Unit:mm Tube O.D. −0.4 Nominal size Class-2 (R-410A) 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: R-407C For class-2: R-410A...
  • Page 274 SiBE34-802 Precautions for New Refrigerant (R-410A) 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: R-407C For class-2: R-410A Dimension B...
  • Page 275 Precautions for New Refrigerant (R-410A) SiBE34-802 4. Leak tester Specifications 2 Hydrogen detecting type, etc. 2 Applicable refrigerants R-410A, R-407C, R-404A, R-507A, R-134a, etc. Differences 2 Previous testers detected chlorine. Since HFCs do not contain chlorine, new tester detects hydrogen. 5.
  • Page 276 SiBE34-802 Precautions for New Refrigerant (R-410A) 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 R-410A (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 277 Precautions for New Refrigerant (R-410A) SiBE34-802 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 278: Index

    SiBE34-802 Index Electrical and Functional Parts Outdoor Unit ........... 30 A0 .................142 Electronic Expansion Valve PI Control ....51 A1 .................143 Error of External Protection Device ..... 142 A3 .................144 Excessive Number of Indoor Units ...... 200 A6 .................146 A7 .................147 A8 .................149 F3 ................
  • Page 279 SiBE34-802 M1 ................207 Oil Return Operation ..........54 M8 ................208 Operation Lamp Blinks ........212 MA ................209 Operation Mode ............ 48 Malfunction code indication by outdoor unit Operation when Power is Turned On ....85 PC board ............138 Option List ............246 Malfunction of Capacity Determination Device ..153 Outdoor Unit PC Board Layout ......
  • Page 280 SiBE34-802 Drawings & Flow Charts abnormal discharge pipe temperature ....172 high pressure protection control ......60 abnormal power supply voltage ......149 high voltage of capacitor in main inverter actuation of high pressure switch ......164 circuit ............188 actuation of low pressure sensor ......166 address duplication of central remote controller ...........201 improper combination of optional controllers for...
  • Page 281 SiBE34-802 malfunction of transmission between centralized wireless remote controller - indoor unit ....89 remote controller and indoor unit ....206 BRC4 type ............89 malfunction of transmission between indoor and BRC7 type ............89 outdoor units in the same system ....198 wiring diagrams ...........
  • Page 282 Specifications, designs and other content appearing in this brochure are current as of July 2008 but subject to change without notice. Printed in Japan 07/2008 AK...

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