Daikin VRV III REYQ8PY1B Service Manual
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Daikin VRV III REYQ8PY1B Service Manual

R-410a heat recovery 50hz
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Table of Contents

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See also: Operating Manual , Installation Manual
SiBE37 - 701
REYQ8-48PY1B
R-410A Heat Recovery 50Hz

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Summary of Contents for Daikin VRV III REYQ8PY1B

  • Page 1 SiBE37 - 701 REYQ8-48PY1B R-410A Heat Recovery 50Hz...

  • Page 2: Table Of Contents

    SiBE37-701 R-410A Heat Recovery 50Hz 1. Introduction .................... vi 1.1 Safety Cautions ..................vi 1.2 PREFACE ....................x Part 1 General Information ............1 1. Model Names of Indoor/Outdoor Units............2 2. External Appearance................3 2.1 Indoor Units ....................3 2.2 Outdoor Units ...................4 3.
  • Page 3 SiBE37-701 Electronic Expansion Valve PI Control..........114 2.4 Step Control of Outdoor Unit Fans ............114 2.5 Outdoor Unit Fan Control in Cooling Operation ........115 2.6 Heat Exchanger Control ...............116 Special Control..................117 Startup Control ..................117 3.2 Large Capacity Start Up Control (Heating)...........119 Oil Return Operation ................120 Defrost Operation .................124 Pump-down Residual Operation ............126...
  • Page 4 SiBE37-701 2.5 Remote Controller Service Mode ............243 2.6 Test Run Mode..................245 2.7 Remote Controller Self-Diagnosis Function .........245 3. Troubleshooting by Indication on the Remote Controller ....252 3.1 “A0” Indoor Unit: Error of External Protection Device......252 3.2 “A1” Indoor Unit: PC Board Defect ............253 3.3 “A3”...
  • Page 5 SiBE37-701 3.34 “JC” Outdoor Unit: Malfunction of Low Pressure Sensor ......303 3.35 “L1” Outdoor Unit: Defective Inverter PC Board ........305 3.36 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise ..........307 3.37 “L5” Outdoor Unit: Momentary Overcurrent of Inverter Compressor ..310 3.38 “L8”...
  • Page 6 SiBE37-701 2. Wiring Diagrams for Reference............395 2.1 Outdoor Unit ..................395 2.2 Field Wiring ..................400 2.3 Indoor Unit....................403 2.4 BS Unit ....................417 List of Electrical and Functional Parts ..........418 Outdoor Unit ..................418 3.2 Indoor Side ...................422 Option List ...................428 4.1 Option List of Controllers..............428 4.2 Option Lists (Outdoor Unit)..............430 Piping Installation Point...............431 5.1 Piping Installation Point ................431...

  • Page 7: Introduction

    Introduction SiBE37-701 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 8 SiBE37-701 Introduction Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.
  • Page 9 Introduction SiBE37-701 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 10 SiBE37-701 Introduction Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it.

  • Page 11: Preface

    This is the new service manual for Daikin's Year 2007 VRVIII series Heat Recovery 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 12: Part 1 General Information

    SiBE37-701 Part 1 General Information 1. Model Names of Indoor/Outdoor Units............2 2. External Appearance................3 2.1 Indoor Units ....................3 2.2 Outdoor Units ...................4 3. Combination of Outdoor Units..............5 4. Model Selection..................6 General Information...

  • Page 13: Model Names Of Indoor/Outdoor Units

    Model Names of Indoor/Outdoor Units SiBE37-701 1. Model Names of Indoor/Outdoor Units Indoor Units Power Type Model Name Supply Roundflow Ceiling FXFQ 100P 125P — — Mounted Cassette 600×600 4-Way Blow FXZQ — — — — — — Ceiling Mounted Cassette 2-Way Blow Ceiling FXCQ...

  • Page 14: External Appearance

    SiBE37-701 External Appearance 2. External Appearance Indoor Units Roundflow Ceiling Mounted Cassette Concealed Ceiling Unit (Large) FXFQ20P FXMQ40MA FXFQ25P FXMQ50MA FXFQ32P FXMQ63MA FXMQ40~125M FXFQ40P FXMQ80MA FXFQ50P FXMQ100MA FXFQ63P FXMQ125MA FXFQ80P FXMQ200MA FXFQ100P FXMQ250MA FXMQ200 · 250M FXFQ125P 600×600 4-Way Blow Ceiling Suspended Unit Ceiling Mounted Cassette FXHQ32MA...

  • Page 15: Outdoor Units

    External Appearance SiBE37-701 Outdoor Units REYQ8P, 10P, 12P, 14P, 16P REYQ18P, 20P, 22P, 24P 8, 10, 12, 14, 16 HP 18, 20, 22, 24 HP 22.4 ~ 40.0, 45.0 kW 50.4 ~ 67.0 kW REYQ26P, 28P REYQ30P, 32P REYQ34P, 36P, 38P, 40P 26, 28 HP 30, 32 HP 34, 36, 38, 40 HP...

  • Page 16: Combination Of Outdoor Units

    38HP ●● ● 40HP Heat Recovery: BHFP26P136 ● ●● 42HP ● ●● 44HP ● ●● 46HP ●●● 48HP Note: For multiple connection of 18HP system or more, an optional Daikin Outdoor Unit Multi Connection Piping Kit is required. General Information...

  • Page 17: Model Selection

    Model Selection SiBE37-701 4. Model Selection VRV III Heat Recovery Series Connectable indoor units number and capacity Normal Series 10HP 12HP 14HP 16HP 18HP 20HP System name REYQ8P REYQ10P REYQ12P REYQ14P REYQ16P REYQ18P REYQ20P Outdoor unit 1 REYQ8P REYQ10P REYQ12P REYQ14P REYQ16P REMQ8P...
  • Page 18 SiBE37-701 Model Selection Connectable Indoor Unit Power Type Model Name Supply Roundflow Ceiling FXFQ 100P 125P — — Mounted Cassette 600×600 4-Way Blow FXZQ — — — — — — Ceiling Mounted Cassette 2-Way Blow Ceiling FXCQ — 125M — —...
  • Page 19 Model Selection SiBE37-701 Differences from Conventional Models Differences Item Object New model (P Model) Conventional model (M Model) NONE Compressor Connection of equalizer oil pipe (No particular changes in terms of service) Equalizer oil pipe for multi- NONE outdoor-unit system Refilling quantity due to piping Refilling quantity due to piping Workability...

  • Page 20: Part 2 Specifications

    SiBE37-701 Part 2 Specifications Specifications ..................10 Outdoor Units ..................10 Indoor Units ....................21 1.3 BS Units ....................54 Specifications...

  • Page 21: Specifications

    Specifications SiBE37-701 Specifications Outdoor Units Heat Recovery 50Hz <REYQ-P> Model Name REYQ8PY1B REYQ10PY1B kcal / h 19,400 24,300 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 76,800 96,200 22.5 28.2 ★ 2 Cooling Capacity (19.0°CWB) 22.4 28.0 kcal / h 21,500 27,100 ★...
  • Page 22 SiBE37-701 Specifications Model Name REYQ12PY1B REYQ14PY1B kcal / h 29,000 35,500 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 115,000 141,000 33.7 41.3 ★ 2 Cooling Capacity (19.0°CWB) 33.5 40.0 kcal / h 32,300 38,700 ★ 3 Heating Capacity Btu / h 128,000 154,000 37.5...
  • Page 23 Specifications SiBE37-701 Model Name REYQ16PY1B kcal / h 40,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 159,000 46.5 ★ 2 Cooling Capacity (19.0°CWB) 45.0 kcal / h 43,000 ★ 3 Heating Capacity Btu / h 171,000 50.0 Y1 Type Ivory White 5Y7.5/1 Casing Color Y1E Type...
  • Page 24 SiBE37-701 Specifications Model Name (Combination Unit) REYQ18P7Y1B REYQ20P7Y1B Model Name (Independent Unit) REMQ8P7Y1B+REMQ10P7Y1B REMQ8P7Y1B+REMQ12P7Y1B kcal / h 43,600 48,300 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 173,000 192,000 50.7 56.2 ★ 2 Cooling Capacity (19.0°CWB) 50.4 55.9 kcal / h 48,600 53,800 ★...
  • Page 25 Specifications SiBE37-701 Model Name (Combination Unit) REYQ22P7Y1B REYQ24P7Y1B Model Name (Independent Unit) REMQ10P7Y1B+REMQ12P7Y1B REMQ12P7Y1B+REMQ12P7Y1B kcal / h 53,200 58,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 211,000 230,000 61.9 67.4 ★ 2 Cooling Capacity (19.0°CWB) 61.5 67.0 kcal / h 59,300 64,500 ★...
  • Page 26 SiBE37-701 Specifications Model Name (Combination Unit) REYQ26P7Y1B REYQ28P7Y1B Model Name (Independent Unit) REMQ10P7Y1B+REMQ16P7Y1B REMQ12P7Y1B+REMQ16P7Y1B kcal / h 63,100 67,900 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 250,000 270,000 73.4 79.0 ★ 2 Cooling Capacity (19.0°CWB) 73.0 78.5 kcal / h 70,100 75,300 ★...
  • Page 27 Specifications SiBE37-701 Model Name (Combination Unit) REYQ30P7Y1B REYQ32P7Y1B Model Name (Independent Unit) REMQ14P7Y1B+REMQ16P7Y1B REMQ16P7Y1B+REMQ16P7Y1B kcal / h 73,500 77,800 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 292,000 309,000 85.5 90.5 ★ 2 Cooling Capacity (19.0°CWB) 85.0 90.0 kcal / h 81,700 86,000 ★...
  • Page 28 SiBE37-701 Specifications Model Name (Combination Unit) REYQ34P7Y1B REYQ36P7Y1B Model Name (Independent Unit) REMQ8P7Y1B+REMQ10P7Y1B+REMQ16P7Y1B REMQ8P7Y1B+REMQ12P7Y1B+REMQ16P7Y1B kcal / h 82,600 87,700 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 328,000 348,000 96.0 ★ 2 Cooling Capacity (19.0°CWB) 95.4 kcal / h 92,000 97,200 ★...
  • Page 29 Specifications SiBE37-701 Model Name (Combination Unit) REYQ38P7Y1B REYQ40P7Y1B Model Name (Independent Unit) REMQ10P7Y1B+REMQ12P7Y1B+REMQ16P7Y1B REMQ12P7Y1B+REMQ12P7Y1B+REMQ16P7Y1B kcal / h 92,900 97,200 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 368,000 386,000 ★ 2 Cooling Capacity (19.0°CWB) kcal / h 102,000 108,000 ★ 3 Heating Capacity Btu / h 406,000...
  • Page 30 SiBE37-701 Specifications Model Name (Combination Unit) REYQ42P7Y1B REYQ44P7Y1B Model Name (Independent Unit) REMQ10P7Y1B+REMQ16P7Y1B+REMQ16P7Y1B REMQ12P7Y1B+REMQ16P7Y1B+REMQ16P7Y1B kcal / h 102,000 108,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 406,000 427,000 ★ 2 Cooling Capacity (19.0°CWB) kcal / h 114,000 119,000 ★ 3 Heating Capacity Btu / h 450,000...
  • Page 31 Specifications SiBE37-701 Model Name (Combination Unit) REYQ46P7Y1B REYQ48P7Y1B Model Name (Independent Unit) REMQ14P7Y1B+REMQ16P7Y1B+REMQ16P7Y1B REMQ16P7Y1B+REMQ16P7Y1B+REMQ16P7Y1B kcal / h 113,000 117,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 447,000 464,000 ★ 2 Cooling Capacity (19.0°CWB) kcal / h 124,000 129,000 ★ 3 Heating Capacity Btu / h 495,000...

  • Page 32: Indoor Units

    SiBE37-701 Specifications Indoor Units Roundflow Ceiling Mounted Cassette 1-1 TECHNICAL SPECIFICATIONS FXFQ20PVEB FXFQ25PVEB FXFQ32PVEB FXFQ40PVEB FXFQ50PVEB Capacity Cooling Heating Power Input Cooling 0.053 0.053 0.053 0.063 0.083 Heating 0.045 0.045 0.045 0.055 0.067 Casing Material Galvanised steel Dimensions Packing Height Width Depth Unit...
  • Page 33 Specifications SiBE37-701 Roundflow Ceiling Mounted Cassette 1-1 TECHNICAL SPECIFICATIONS FXFQ20PVEB FXFQ25PVEB FXFQ32PVEB FXFQ40PVEB FXFQ50PVEB Standard Standard Accessories Installation and operation manual Accessories Drain hose Washer for hanging bracket Screws Sealing Pads Insulation for fitting Clamp for drain hose Installation guide Drain sealing pad Notes The sound pressure values are mentioned for a unit installed with rear suction...
  • Page 34 SiBE37-701 Specifications Roundflow Ceiling Mounted Cassette 1-1 TECHNICAL SPECIFICATIONS FXFQ63PVEB FXFQ80PVEB FXFQ100PVEB FXFQ125PVEB Piping Liquid Type Flare connection connections (OD) Diameter Type Flare connection Diameter 15.9 15.9 15.9 15.9 Drain Diameter VP25 (I.D. 25/O.D. 32) Heat Insulation Foamed polystyrene/polyethylene Sound absorbing insulation (Foamed Polyurethane) Decoration Model...
  • Page 35 Specifications SiBE37-701 1-2 ELECTRICAL SPECIFICATIONS FXFQ20PVEB FXFQ25PVEB FXFQ32PVEB FXFQ40PVEB FXFQ50PVEB Power Name Supply Frequency 50/60 Voltage 220-240/220 Current Minimum circuit amps (MCA) Maximum fuse amps (MFA) Full load amps (FLA) Voltage Minimum -10% range Maximum +10% Notes Voltage range : units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits.
  • Page 36 SiBE37-701 Specifications 600×600 4-Way Blow Ceiling Mounted Cassette 1-1 TECHNICAL SPECIFICATIONS FXZQ20MV1B FXZQ25MV1B FXZQ32MV1B FXZQ40MV1B FXZQ50MV1B Nominal Cooling 2.20 2.80 3.60 4.50 5.60 Capacity Heating 2.50 3.20 4.00 5.00 6.30 Power input Cooling 0.073 0.073 0.076 0.089 0.115 (Nominal) Heating 0.064 0.064 0.068...
  • Page 37 Specifications SiBE37-701 1-1 TECHNICAL SPECIFICATIONS FXZQ20MV1B FXZQ25MV1B FXZQ32MV1B FXZQ40MV1B FXZQ50MV1B Notes Nominal cooling capacities are based on : indoor temperature : 27°CDB, 19°CWB, outdoor temperature : 35°CDB, equivalent refrigerant piping : 7.5m (horizontal) Nominal heating capacities are based on : indoor temperature : 20°CDB, outdoor temperature : 7°CDB, 6°CWB, equivalent refrigerant piping : 7.5m (horizontal) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat.
  • Page 38 SiBE37-701 Specifications 2-Way Blow Ceiling Mounted Cassette 1-1 TECHNICAL SPECIFICATIONS FXCQ20MV3B FXCQ25MV3B FXCQ32MV3B FXCQ40MV3B FXCQ50MV3B Nominal Cooling 2.20 2.80 3.60 4.50 5.60 Capacity Heating 2.50 3.20 4.00 5.00 6.30 Power input Cooling 0.077 0.092 0.092 0.130 0.130 (Nominal) Heating 0.044 0.059 0.059 0.097...
  • Page 39 Specifications SiBE37-701 2-Way Blow Ceiling Mounted Cassette 1-1 TECHNICAL SPECIFICATIONS FXCQ20MV3B FXCQ25MV3B FXCQ32MV3B FXCQ40MV3B FXCQ50MV3B 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...
  • Page 40 SiBE37-701 Specifications 1-1 TECHNICAL SPECIFICATIONS FXCQ63MV3B FXCQ80MV3B FXCQ125MV3B Nominal Cooling 7.10 9.00 14.00 Capacity Heating 8.00 10.00 16.00 Power input Cooling 0.161 0.209 0.256 (Nominal) Heating 0.126 0.176 0.223 Casing Colour Non painted Material Galvanised steel Dimensions Packing Height Width 1,460 1,808 1,808...
  • Page 41 Specifications SiBE37-701 1-1 TECHNICAL SPECIFICATIONS FXCQ63MV3B FXCQ80MV3B FXCQ125MV3B 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 Fan motor thermal protector Fan motor thermal protector Drain pump fuse...
  • Page 42 SiBE37-701 Specifications 1-2 ELECTRICAL SPECIFICATIONS FXCQ20MV3B FXCQ25MV3B FXCQ32MV3B FXCQ40MV3B FXCQ50MV3B Power Name Supply Phase Frequency Voltage Current Minimum circuit amps 0.50 0.50 0.50 0.80 0.80 (MCA) Maximum fuse amps 16.00 16.00 16.00 16.00 16.00 (MFA) Full load amps (FLA) 0.40 0.40 0.40 0.60...
  • Page 43 Specifications SiBE37-701 Ceiling Mounted Corner Cassette 1-1 TECHNICAL SPECIFICATIONS FXKQ25MAVE FXKQ32MAVE FXKQ40MAVE FXKQ63MAVE Nominal Cooling 2.80 3.60 4.50 7.10 Capacity Heating 3.20 4.00 5.00 8.00 Power input Cooling 0.066 0.066 0.076 0.105 (Nominal) Heating 0.046 0.046 0.056 0.085 Casing Material Galvanised steel Dimensions Unit...
  • Page 44 SiBE37-701 Specifications 1-1 TECHNICAL SPECIFICATIONS FXKQ25MAVE FXKQ32MAVE FXKQ40MAVE FXKQ63MAVE Notes Nominal cooling capacities are based on : indoor temperature : 27°CDB, 19°CWB, outdoor temperature : 35°CDB, equivalent refrigerant piping : 7.5m (horizontal) Nominal heating capacities are based on: indoor temperature : 20°CDB, outdoor temperature : 7°CDB, 6°CWB, equivalent refrigerant piping : 7.5m (horizontal) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat.
  • Page 45 Specifications SiBE37-701 Slim Concealed Ceiling Unit (with Drain Pump) 1-1 TECHNICAL SPECIFICATIONS FXDQ20PVE FXDQ25PVE FXDQ32PVE FXDQ40NAVE FXDQ50NAVE FXDQ63NAVE Nominal Cooling 2.20 2.80 3.60 4.50 5.60 7.10 Capacity Heating 2.50 3.20 4.00 5.00 6.30 8.00 Power input Cooling 0.086 0.086 0.089 0.160 0.165 0.181...
  • Page 46 SiBE37-701 Specifications Slim Concealed Ceiling Unit (with Drain Pump) 1-2 ELECTRICAL SPECIFICATIONS FXDQ20PVE FXDQ25PVE FXDQ32PVE FXDQ40NAVE FXDQ50NAVE FXDQ63NAVE Power Name Supply Phase Frequency Voltage 220-240 Current Minimum circuit amps 0.80 0.80 0.80 1.00 1.00 1.10 (MCA) Maximum fuse amps 15.00 15.00 15.00 15.00...
  • Page 47 Specifications SiBE37-701 Concealed Ceiling Unit (Small) 1-1 TECHNICAL SPECIFICATIONS FXDQ20MV3B FXDQ25MV3B Nominal Cooling 2.20 2.80 Capacity Heating 2.50 3.20 Power input Cooling 0.050 0.050 (Nominal) Heating 0.050 0.050 Casing Colour Non painted Material Galvanised steel Dimensions Packing Height Width Depth Unit Height Width...
  • Page 48 SiBE37-701 Specifications 1-1 TECHNICAL SPECIFICATIONS FXDQ20MV3B FXDQ25MV3B Standard Standard Accessories Installation and operation manual Accessories Fuse Caution for servicing sticker Suction air filter Notes Nominal cooling capacities are based on : indoor temperature : 27°CDB, 19°CWB, outdoor temperature : 35°CDB, equivalent refrigerant piping : 8m, level difference : 0m.
  • Page 49 Specifications SiBE37-701 Concealed Ceiling Unit 1-1 TECHNICAL SPECIFICATIONS FXSQ20MV3B FXSQ25MV3B FXSQ32MV3B FXSQ40MV3B FXSQ50MV3B 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) Power input Cooling 0.110 0.110 0.114 0.127 0.143 (Nominal) Heating 0.090 0.090 0.094...
  • Page 50 SiBE37-701 Specifications Concealed Ceiling Unit 1-1 TECHNICAL SPECIFICATIONS FXSQ20MV3B FXSQ25MV3B FXSQ32MV3B FXSQ40MV3B FXSQ50MV3B Decoration Model BYBS32DJW1 BYBS32DJW1 BYBS32DJW1 BYBS45DJW1 BYBS45DJW1 Panel Colour White (10Y9/0,5) Dimensions Height Width Depth Weight Drain-up Height Air Filter Resin net with mold resistance Air direction control Up and downwards Refrigerant control Electronic expansion valve...
  • Page 51 Specifications SiBE37-701 Concealed Ceiling Unit 1-1 TECHNICAL SPECIFICATIONS FXSQ63MV3B FXSQ80MV3B FXSQ100MV3B FXSQ125MV3B Capacity Cooling 7.10 9.00 11.20 14.00 (Conditions Heating 8.00 10.00 12.50 16.00 specified in Power input Cooling 0.189 0.234 0.242 0.321 (Nominal) Heating 0.169 0.214 0.222 0.301 Casing Colour Non painted Material...
  • Page 52 SiBE37-701 Specifications 1-1 TECHNICAL SPECIFICATIONS FXSQ63MV3B FXSQ80MV3B FXSQ100MV3B FXSQ125MV3B Decoration Model BYBS71DJW1 BYBS125DJW1 BYBS125DJW1 BYBS125DJW1 Panel Colour White (10Y9/0,5) Dimensions Height Width 1,100 1,500 1,500 1,500 Depth Weight Drain-up Height Air Filter Resin net with mold resistance Air direction control Up and downwards Refrigerant control Electronic expansion valve...
  • Page 53 Specifications SiBE37-701 1-2 ELECTRICAL SPECIFICATIONS FXSQ20MV3B FXSQ25MV3B FXSQ32MV3B FXSQ40MV3B FXSQ50MV3B Power Name Supply Phase Frequency Voltage Current Minimum circuit amps 0.50 0.50 0.50 0.60 0.90 (MCA) Maximum fuse amps 16.00 16.00 16.00 16.00 16.00 (MFA) Full load amps (FLA) 0.40 0.40 0.40 0.50...
  • Page 54 SiBE37-701 Specifications Concealed Ceiling Unit (Large) 1-1 TECHNICAL SPECIFICATIONS FXMQ40MAVE FXMQ50MAVE FXMQ63MAVE FXMQ80MAVE Nominal Cooing 4.50 5.60 7.10 9.00 Capacitry Heating 5.00 6.30 8.00 10.00 Power input Cooing 0.211 0.211 0.211 0.284 (Nominal) Heating 0.211 0.211 0.211 0.284 Casing Material Galvanised steel Dimensions Unit...
  • Page 55 Specifications SiBE37-701 Concealed Ceiling Unit (Large) 1-1 TECHNICAL SPECIFICATIONS FXMQ100MAVE FXMQ125MAVE FXMQ200MAVE FXMQ250MAVE Nominal Cooling 11.20 14.00 22.40 28.00 Capacity Heating 12.50 16.00 25.00 31.50 Power input Cooling 0.411 0.619 1.294 1.465 (Nominal) Heating 0.411 0.619 1.294 1.465 Casing Material Galvanised steel Dimensions Unit...
  • Page 56 SiBE37-701 Specifications 1-2 ELECTRICAL SPECIFICATIONS FXMQ40MAVE FXMQ50MAVE FXMQ63MAVE FXMQ80MAVE Power Name Supply Phase Frequency Voltage 220-240 Current Minimum circuit amps 1.30 1.30 1.30 1.50 (MCA) Maximum fuse amps 15.00 15.00 15.00 15.00 (MFA) Full load amps (FLA) 1.00 1.00 1.00 1.20 Voltage Minimum...
  • Page 57 Specifications SiBE37-701 Ceiling Suspended Unit 1-1 TECHNICAL SPECIFICATIONS FXHQ32MAVE FXHQ63MAVE FXHQ100MAVE Nominal Cooling 3.60 7.10 11.20 Capacity Heating 4.00 8.00 12.50 Power input Cooling 0.111 0.115 0.135 (Nominal) Heating 0.111 0.115 0.135 Casing Colour White (10Y9/0.5) Dimensions Unit Height Width 1,160 1,400 Depth...
  • Page 58 SiBE37-701 Specifications 1-2 ELECTRICAL SPECIFICATIONS FXHQ32MAVE FXHQ63MAVE FXHQ100MAVE Power Name Supply Phase Frequency Voltage 220-240 Current Minimum circuit amps 0.80 0.80 0.90 (MCA) Maximum fuse amps 15.00 15.00 15.00 (MFA) Full load amps (FLA) 0.60 0.60 0.70 Voltage Minimum -10% range Maximum +10%...
  • Page 59 Specifications SiBE37-701 Wall Mounted Unit 1-1 TECHNICAL SPECIFICATIONS FXAQ20MAVE FXAQ25MAVE FXAQ32MAVE FXAQ40MAVE FXAQ50MAVE FXAQ63MAVE Nominal Cooling 2.20 2.80 3.60 4.50 5.60 7.10 Capacity Heating 2.50 3.20 4.00 5.00 6.30 8.00 Power input Cooling 0.016 0.022 0.027 0.020 0.027 0.050 (Nominal) Heating 0.024 0.027...
  • Page 60 SiBE37-701 Specifications Wall Mounted Unit 1-2 ELECTRICAL SPECIFICATIONS FXAQ20MAVE FXAQ25MAVE FXAQ32MAVE FXAQ40MAVE FXAQ50MAVE FXAQ63MAVE Power Name Supply Phase Frequency Voltage 220-240 Current Minimum circuit amps 0.30 0.40 0.40 0.40 0.40 0.60 (MCA) Maximum fuse amps 15.00 15.00 15.00 15.00 15.00 15.00 (MFA) Full load amps (FLA)
  • Page 61 Specifications SiBE37-701 Floor Standing Unit 1-1 TECHNICAL SPECIFICATIONS FXLQ20MAVE FXLQ25MAVE FXLQ32MAVE FXLQ40MAVE FXLQ50MAVE FXLQ63MAVE Nominal Cooling 2.20 2.80 3.60 4.50 5.60 7.10 Capacity Heating 2.50 3.20 4.00 5.00 6.30 8.00 Power input Cooling 0.049 0.049 0.090 0.090 0.110 0.110 (Nominal) Heating 0.049 0.049...
  • Page 62 SiBE37-701 Specifications Floor Standing Unit 1-2 ELECTRICAL SPECIFICATIONS FXLQ20MAVE FXLQ25MAVE FXLQ32MAVE FXLQ40MAVE FXLQ50MAVE FXLQ63MAVE Power Name Supply Phase Frequency Voltage 220-240 Current Minimum circuit amps 0.30 0.30 0.60 0.60 0.60 0.60 (MCA) Maximum fuse amps 15.00 15.00 15.00 15.00 15.00 15.00 (MFA) Full load amps (FLA)
  • Page 63 Specifications SiBE37-701 Concealed Floor Standing Unit 1-1 TECHNICAL SPECIFICATIONS FXNQ20MAVE FXNQ25MAVE FXNQ32MAVE FXNQ40MAVE FXNQ50MAVE FXNQ63MAVE Nominal Cooling 2.20 2.80 3.60 4.50 5.60 7.10 Capacity Heating 2.50 3.20 4.00 5.00 6.30 8.00 Power input Cooling 0.049 0.049 0.090 0.090 0.110 0.110 (Nominal) Heating 0.049...
  • Page 64 SiBE37-701 Specifications Concealed Floor Standing Unit 1-2 ELECTRICAL SPECIFICATIONS FXNQ20MAVE FXNQ25MAVE FXNQ32MAVE FXNQ40MAVE FXNQ50MAVE FXNQ63MAVE Power Name Supply Phase Frequency Voltage 220-240 Current Minimum circuit amps 0.30 0.30 0.60 0.60 0.60 0.60 (MCA) Maximum fuse amps 15.00 15.00 15.00 15.00 15.00 15.00 (MFA)

  • Page 65: Bs Units

    Specifications SiBE37-701 BS Units Model BSVQ100PV1 BSVQ160PV1 BSVQ250PV1 Power Supply 1 Phase 50Hz 200-240V 1 Phase 50Hz 200-240V 1 Phase 50Hz 200-240V Total Capacity Index of Indoor Unit 20 to 100 More than 100 but 160 or less More than 160 but 250 or less No.

  • Page 66: Part 3 Refrigerant Circuit

    SiBE37-701 Part 3 Refrigerant Circuit Refrigerant Circuit .................56 REYQ8P, 10P, 12P ................56 REYQ14P, 16P ..................58 REMQ8P (Multi 8HP) ................60 REMQ10P, 12P (Multi 10, 12HP)............62 REMQ14P, 16P (Multi 14, 16HP)............64 1.6 BS Unit Functional Parts ................66 1.7 Indoor Units ....................67 Functional Parts Layout ................68 REYQ8P, 10P, 12P ................68 REYQ14P, 16P ..................69 2.3 REMQ8P ....................70...

  • Page 67: Refrigerant Circuit

    Refrigerant Circuit SiBE37-701 Refrigerant Circuit REYQ8P, 10P, 12P No. in refrigerant Symbol Name Major Function system diagram Inverter compressor (INV) Inverter compressor is operated on frequencies between 52Hz and 210Hz by using the inverter, while Standard compressor is operated with commercial power supply only.
  • Page 68 SiBE37-701 Refrigerant Circuit REYQ8P, 10P, 12P (8HP, 10HP, 12HP Single Type) (INV Unit + STD Unit) Liquid Subcool Heat Exchanger 2 Pipe Left Stop Valve Heat Exchanger 2 Dual Pressure Gas Pipe Stop Valve S2PH Suction Pipe Stop Valve Subcool Heat Exchanger 1 Right Heat Exchanger 1 Gauge Port...

  • Page 69: Reyq14P, 16P

    Refrigerant Circuit SiBE37-701 REYQ14P, 16P No. in refrigerant Symbol Name Major Function system diagram Inverter compressor (INV1) Inverter compressor is operated on frequencies between 52Hz and 266Hz by using the inverter. The number of operating steps is as follows. REYQ14P or 16P : 26 step Standard compressor 1 (INV2) Since the system is of air heat exchanging type, the fan is operated at 9-step rotation Inverter fan...
  • Page 70 SiBE37-701 Refrigerant Circuit REYQ14P, 16P (14HP, 16HP Single Type) (INV Unit × 2) Liquid Subcool Heat Exchanger 2 Pipe Left Stop Valve Heat Exchanger 2 Dual Pressure Gas Pipe Stop Valve S2PH INV2 Suction Pipe Stop Valve Subcool Heat Exchanger 1 Liquid Pipe Right Heat Exchanger 1...

  • Page 71: Remq8P (Multi 8Hp)

    Refrigerant Circuit SiBE37-701 REMQ8P (Multi 8HP) No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 52Hz and 210Hz by using Inverter compressor (INV) the inverter. Compressor operation steps : Refer to page 104~107. Since the system is of air heat exchanging type, the fan is operated at 9-step rotation Inverter fan speed by using the inverter.
  • Page 72 SiBE37-701 Refrigerant Circuit REMQ8P Stop Valve Liquid Pipe S1NPH Stop Valve Equalizing Pipe Stop Valve Dual Pressure Gas Pipe S1PH S2NPL Gauge Port Stop Valve Suction Pipe Refrigerant Circuit...

  • Page 73: Remq10P, 12P (Multi 10, 12Hp)

    Refrigerant Circuit SiBE37-701 REMQ10P, 12P (Multi 10, 12HP) No. in refrigerant Symbol Name Major Function system diagram Inverter compressor (INV) Inverter compressor is operated on frequencies between 52Hz and 210Hz by using the inverter, while Standard compressor is operated with commercial power supply only.
  • Page 74 SiBE37-701 Refrigerant Circuit REMQ10P, 12P Stop Valve Liquid Pipe S1NPH Stop Valve Equalizing Pipe Stop Valve Dual Pressure Gas Pipe S1PH S2PH S2NPL Gauge Port Stop Valve Suction Pipe Refrigerant Circuit...

  • Page 75: Remq14P, 16P (Multi 14, 16Hp)

    Refrigerant Circuit SiBE37-701 REMQ14P, 16P (Multi 14, 16HP) No. in refrigerant Symbol Name Major Function system diagram Inverter compressor (INV) Inverter compressor is operated on frequencies between 52Hz and 210Hz by using the inverter, while Standard compressor is operated with commercial power supply only. The number of Standard compressor 1 (STD1) operating steps is as follows when Inverter compressor is operated in combination with Standard compressor.
  • Page 76 SiBE37-701 Refrigerant Circuit REMQ14P, 16P Stop Valve Liquid Pipe S1NPH Stop Valve Equalizing Pipe Stop Valve Dual Pressure Gas Pipe S1PH S2PH S3PH S2NPL Gauge Port Stop Valve Suction Pipe Refrigerant Circuit...

  • Page 77: Bs Unit Functional Parts

    Refrigerant Circuit SiBE37-701 BS Unit Functional Parts BSVQ100,160,250PV1 Name Symbol Function Electronic expansion valve (EVH) Opens while in heating operation or all indoor units are in cooling operation. (Max : 760pls) Electronic expansion valve (EVL) Opens while in cooling operation. (Max : 760pls) Electronic expansion valve (EVHS) Opens while in heating operation or all indoor units are in cooling operation.

  • Page 78: Indoor Units

    SiBE37-701 Refrigerant Circuit Indoor Units FXCQ, FXFQ, FXZQ, FXKQ, FXDQ, FXSQ, FXMQ, FXHQ, FXAQ, FXLQ, FXNQ Gas-side Piping Liquid-side Piping Electronic Filter Filter Expansion Valve Name Symbol Function Used to control superheated degree of gas when Electronic cooling and subcooled degree when heating. (Max. expansion valve 2000 pls) Suction air...

  • Page 79: Functional Parts Layout

    Functional Parts Layout SiBE37-701 Functional Parts Layout REYQ8P, 10P, 12P Plan Front View Note: For reference numbers, refer to page 56. Refrigerant Circuit...

  • Page 80: Reyq14P, 16P

    SiBE37-701 Functional Parts Layout REYQ14P, 16P Plan Front View Note: For reference numbers, refer to page 58. Refrigerant Circuit...

  • Page 81: Remq8P

    Functional Parts Layout SiBE37-701 REMQ8P Plan REFRIGERANT REGULATOR Front View Note: For reference numbers, refer to page 60. Refrigerant Circuit...

  • Page 82: Remq10P, 12P

    SiBE37-701 Functional Parts Layout REMQ10P, 12P Plan REFRIGERANT REGULATOR Front View Note: For reference number, refer to page 62. Refrigerant Circuit...

  • Page 83: Remq14P, 16P

    Functional Parts Layout SiBE37-701 REMQ14P, 16P Plan REFRIGERANT REGULATOR Front View Note: For reference number, refer to page 64. Refrigerant Circuit...

  • Page 84: Refrigerant Flow For Each Operation Mode

    SiBE37-701 Refrigerant Flow for Each Operation Mode Refrigerant Flow for Each Operation Mode REYQ8P, 10P, 12P Cooling Operation Refrigerant Circuit...
  • Page 85 Refrigerant Flow for Each Operation Mode SiBE37-701 Heating Operation Refrigerant Circuit...
  • Page 86 SiBE37-701 Refrigerant Flow for Each Operation Mode Simultaneous Cooling / Heating Operation Refrigerant Circuit...
  • Page 87 Refrigerant Flow for Each Operation Mode SiBE37-701 Cooling Oil Return Operation Refrigerant Circuit...
  • Page 88 SiBE37-701 Refrigerant Flow for Each Operation Mode Heating Oil Return Operation Refrigerant Circuit...
  • Page 89 Refrigerant Flow for Each Operation Mode SiBE37-701 Oil Return Operation at Simultaneous Cooling / Heating Operation Refrigerant Circuit...
  • Page 90 SiBE37-701 Refrigerant Flow for Each Operation Mode Partial Defrosting 1 (Defrosting in the Right Unit) Refrigerant Circuit...
  • Page 91 Refrigerant Flow for Each Operation Mode SiBE37-701 Partial Defrosting 2 (Defrosting in the Left Unit) Refrigerant Circuit...
  • Page 92 SiBE37-701 Refrigerant Flow for Each Operation Mode REYQ14P, 16P Cooling Operation Refrigerant Circuit...
  • Page 93 Refrigerant Flow for Each Operation Mode SiBE37-701 Heating Operation Refrigerant Circuit...
  • Page 94 SiBE37-701 Refrigerant Flow for Each Operation Mode Simultaneous Cooling / Heating Operation Refrigerant Circuit...
  • Page 95 Refrigerant Flow for Each Operation Mode SiBE37-701 Cooling Oil Return Operation Refrigerant Circuit...
  • Page 96 SiBE37-701 Refrigerant Flow for Each Operation Mode Heating Oil Return Operation Refrigerant Circuit...
  • Page 97 Refrigerant Flow for Each Operation Mode SiBE37-701 Oil Return Operation at Simultaneous Cooling / Heating Operation Refrigerant Circuit...
  • Page 98 SiBE37-701 Refrigerant Flow for Each Operation Mode Partial Defrosting 1 (Defrosting in the Right Unit) Refrigerant Circuit...
  • Page 99 Refrigerant Flow for Each Operation Mode SiBE37-701 Partial Defrosting 2 (Defrosting in the Left Unit) Refrigerant Circuit...
  • Page 100 SiBE37-701 Refrigerant Flow for Each Operation Mode REYQ18P, 20P Cooling Operation Refrigerant Circuit...
  • Page 101 Refrigerant Flow for Each Operation Mode SiBE37-701 Heating Operation Refrigerant Circuit...
  • Page 102 SiBE37-701 Refrigerant Flow for Each Operation Mode Simultaneous Cooling / Heating Operation Refrigerant Circuit...
  • Page 103 Refrigerant Flow for Each Operation Mode SiBE37-701 Cooling Oil Return Operation Refrigerant Circuit...
  • Page 104 SiBE37-701 Refrigerant Flow for Each Operation Mode Heating Oil Return Operation Refrigerant Circuit...
  • Page 105 Refrigerant Flow for Each Operation Mode SiBE37-701 Oil Return Operation at Simultaneous Cooling / Heating Operation Refrigerant Circuit...
  • Page 106 SiBE37-701 Refrigerant Flow for Each Operation Mode Partial Defrosting 1 (Defrosting in the Right Unit) Refrigerant Circuit...
  • Page 107 Refrigerant Flow for Each Operation Mode SiBE37-701 Partial Defrosting 2 (Defrosting in the Left Unit) Refrigerant Circuit...
  • Page 108 SiBE37-701 Refrigerant Flow for Each Operation Mode Operation of refrigerant regulator 1. Recovery of refrigerant Surplus refrigerant is recovered to refrigerant regulator by opening of SVL and SVG when the indoor unit load is small. Liquid Pipe Right Pressure regulating valve 20SA S1NPH Equalizing...
  • Page 109 Refrigerant Flow for Each Operation Mode SiBE37-701 Pressure equalizing when switching operation cooling / heating 1. When switching operation from to cooling to heating First, the electric expansion valves for EVHS, EVH, EVL and EVLS of the indoor unit will be closed.
  • Page 110 SiBE37-701 Refrigerant Flow for Each Operation Mode 2. When switching operation from heating to cooling First, the electric expansion valve and the solenoid valve for EVHS, EVH, EVL and EVLS of the indoor unit will be closed. Next, open the EVLS, and it makes to balance the system pressure. Finally, EVL and EVLS are opened and the electric expansion valve of the indoor unit is opened to start the operation as a cooling circuit.
  • Page 111 Refrigerant Flow for Each Operation Mode SiBE37-701 Refrigerant Circuit...

  • Page 112: Part 4 Function

    SiBE37-701 Part 4 Function 1. Function General.................102 1.1 Symbol ....................102 1.2 Operation Mode..................104 2. Basic Control..................105 2.1 Normal Operation .................105 2.2 Compressor PI Control.................106 2.3 Electronic Expansion Valve PI Control..........114 2.4 Step Control of Outdoor Unit Fans ............114 2.5 Outdoor Unit Fan Control in Cooling Operation ........115 2.6 Heat Exchanger Control ...............116 3.

  • Page 113: Function General

    Function General SiBE37-701 1. Function General Symbol Electric symbol Symbol Description or function REYQ8~16P REMQ8~16P (Heat exchanger1) 20SA Four way valve (Heat exchanger switch) (Heat exchanger2) 20SB Four way valve (High/low pressure gas pipe switch) – – Discharge pipe superheated degree DSHi –...
  • Page 114 SiBE37-701 Function General Electric symbol Symbol Description or function REYQ8~16P REMQ8~16P R1T (A1P) R1T (A1P) Outdoor air temperature R8T (Suction pipe1) Suction pipe temperature R10T (Suction pipe2) (Deicer1) Heat exchanger outlet temperature at cooling R12T (Deicer2) (Gas pipe1) Heat exchanger gas pipe temperature R11T (Gas pipe2) (Liquid pipe1)

  • Page 115: Operation Mode

    Function General SiBE37-701 Operation Mode Thermostat ON Operation in stop mode Indoor unit stop or thermostat Operation Pressure egualization mode prior to startup changeover Restart stanby Thermostat ON Malfunction/ Rotation Stanby Malfunction/ Stanby Indoor unit stop or thermostat OFF Pump-down Cooling Heating Thermostat ON...

  • Page 116: Basic Control

    SiBE37-701 Basic Control Basic Control Normal Operation 2.1.1 List of Functions in Normal Operation (Electric Function of Functional Part Symbol) Part Name Symbol Normal Simultaneous Normal Cooling Normal Heating REYQ REMQ Cooling / Heating M1C M1C PI control, High PI control, High PI control, High Compressor 1 pressure protection,...

  • Page 117: Compressor Pi Control

    Basic Control SiBE37-701 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 achieve target value (TeS).
  • Page 118 SiBE37-701 Basic Control Operating Priority and Rotation of Compressors Each compressor operates in the following order of priority. INV: Inverter compressor In the case of multi-outdoor-unit system, each compressor operates in any of Pattern 1 STD1: Standard compressor 1 through Pattern 3 according to the rotation of outdoor units. STD2: Standard compressor 2 Pattern 1 Pattern 2...
  • Page 119 Basic Control SiBE37-701 REYQ38P, 40P No. 2 No. 5 No. 3 No. 6 No. 7 No. 1 No. 4 No. 1 No. 4 No. 2 No. 5 No. 7 No. 3 No. 6 No. 3 No. 6 No. 1 No. 4 No. 7 No.
  • Page 120 SiBE37-701 Basic Control Compressor Step Control Compressor operations vary with the following steps according to information in "2.2 Compressor PI Control". Furthermore, the operating priority of compressors is subject to information in " Operating Priority and Rotation of Compressors". Single unit installation REYQ14PY1, 16PY1 REYQ8PY1, 10PY1, 12PY1 STEP...
  • Page 121 Basic Control SiBE37-701 Two-unit multi system REYQ18PY1, 20PY1 (8+10/12HP) REYQ22PY1, 24PY1 (10/12+12HP) (To increase Step No.) (To decrease Step No.) (To increase Step No.) (To decrease Step No.) STEP unit 1 unit 2 STEP unit 1 unit 2 STEP unit 1 unit 2 STEP unit 1...
  • Page 122 SiBE37-701 Basic Control Three-unit multi system REYQ26PY1, 28PY1 (10/12+16HP) REYQ 30PY1, 32PY1 (14/16+16HP) (To increase Step No.) (To decrease Step No.) (To increase Step No.) (To decrease Step No.) STEP unit 1 unit 2 STEP unit 1 unit 2 STEP unit 1 unit 2 STEP...
  • Page 123 Basic Control SiBE37-701 REYQ34PY1, 36PY1 (8+10/12+16HP) REYQ38PY1, 40PY1 (10/12+12+16HP) (To increase Step No.) (To decrease Step No.) (To increase Step No.) (To decrease Step No.) STEP unit 1 unit 2 unit 3 STEP unit 1 unit 2 unit 3 STEP unit 1 unit 2 unit 3...
  • Page 124 SiBE37-701 Basic Control REYQ42PY1, 44PY1 (10/12+16+16HP) REYQ46PY1, 48PY1 (14/16+16+16HP) (To increase Step No.) (To decrease Step No.) (To increase Step No.) (To decrease Step No.) STEP unit 1 unit 2 unit 3 STEP unit 1 unit 2 unit 3 STEP unit 1 unit 2 unit 3...

  • Page 125: Electronic Expansion Valve Pi Control

    Basic Control SiBE37-701 Electronic Expansion Valve PI Control Main electronic expansion valve EVM control When the outdoor unit heat exchanging is performed via the evaporator (20SA is set to ON), this function is used to exert PI control on the electronic expansion valve (Y1E or Y3E) so that the evaporator outlet superheated degree (SH) will become constant.

  • Page 126: Outdoor Unit Fan Control In Cooling Operation

    SiBE37-701 Basic Control Outdoor Unit Fan Control in Cooling Operation While in cooling operation, if the outdoor temperature is low, this mode provides high-pressure control using the outdoor unit fan to retain appropriate liquid pressure, thus ensuring refrigerant circulation rate to be supplied to indoor units. Fan step 9 Pc>3.28MPa PI control...

  • Page 127: Heat Exchanger Control

    Basic Control SiBE37-701 Heat Exchanger Control While in heating or cool/heat simultaneous operation, ensure target condensing and evaporating temperature by changing over the air heat exchange of outdoor unit to the evaporator or the condenser in response to loads. [Single system] Outdoor unit Outdoor unit Note 1.

  • Page 128: Special Control

    SiBE37-701 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 129 Special Control SiBE37-701 3.1.2 Startup Control in Heating Operation Elect. Control Startup control symbol Actuator Symbol before startup STEP1 STEP2 REYQ REMQ Compressor 1 M1C M1C 52Hz+OFF+OFF+2STEP / 20 sec. Compressor 2 — M2C M2C 0 Hz 52 Hz+OFF+OFF (Until it reaches Pc-Pe>0.39 MPa) Compressor 3 —...

  • Page 130: Large Capacity Start Up Control (Heating)

    SiBE37-701 Special Control Large Capacity Start Up Control (Heating) For startup, oil return operation, or setup after defrosting, start up multiple compressors at a high speed according to the conditions of indoor units with thermostat ON, thus maximizing the equipment capacity. Pressure Number of compressors...

  • Page 131: Oil Return Operation

    Special Control SiBE37-701 Oil Return Operation This function is used to recover refrigerant oil that flows out from the compressor to the system side by conducting oil return operation in order to prevent the compressor from running out of refrigerant oil. 3.3.1 Cooling Oil Return Operation [Start conditions] Referring to the following conditions, start cooling oil return operation.
  • Page 132 SiBE37-701 Special Control Cooling indoor unit actuator Oil return operation Thermo ON unit Remote controller setting Unit not in operation Thermo OFF unit Remote controller setting Thermo ON unit Normal opening degree Motorized valve Unit not in operation 192pls Thermo OFF unit Normal opening degree for forced thermostat ON Cooling BS unit actuator Elect.
  • Page 133 Special Control SiBE37-701 3.3.2 Heating Oil Return Operation (including cooling / heating simultaneous operation) [Start conditions] Referring to the following conditions, start heating oil return operation. • Integral oil rise rate is reached to specified level. • When cumulative compressor operating time exceeds 8 hours (2 hours when the power supply turns ON for the first time) Furthermore, the integral oil rise rate is calculated by Tc, Te, and compressor loads.
  • Page 134 SiBE37-701 Special Control Cooling indoor unit actuator Oil return operation Thermo ON unit Remote controller setting Unit not in operation Thermo OFF unit Remote controller setting Thermo ON unit Normal opening degree Motorized valve Unit not in operation 192pls Thermo OFF unit Normal opening degree for forced thermostat ON Heating indoor unit actuator Oil return operation...

  • Page 135: Defrost Operation

    Special Control SiBE37-701 Defrost Operation [Start conditions] Referring to the following conditions, start defrost operation. • When there is a decrease in the coefficient of heat transfer of outdoor unit heat exchanger • When there is a drop in the temperature of outdoor unit heat exchanger outlet (Tb) &...
  • Page 136 SiBE37-701 Special Control Elect. symbol Evaporating outdoor unit actuator Defrost operation Operation after defrost Symbol REYQ REMQ Upper limit 124Hz (STD Holds) Compressor 1 M1C REYQ8•10•12P: 232Hz+ON REYP400•480A: 232Hz+232Hz REYQ14•16P: 232Hz+232Hz REMP224A: 210Hz Compressor 2 — REMQ8P: 210Hz REMP280•335A: 210Hz+ON REMQ10•12P: 210Hz+ON REMP400•450A: REMQ14•16P: 210Hz+ON+ON...

  • Page 137: Pump-Down Residual Operation

    Special Control SiBE37-701 Pump-down Residual Operation 3.5.1 Pump-down Residual Operation in Cooling Operation If the liquid refrigerant stays in the Evaporator at the startup of a compressor, this liquid refrigerant enters the compressor, thus resulting in diluted oil in the compressor and then degraded lubrication performance. Consequently, in order to recover the refrigerant in the Evaporator while the compressor stops, the pump-down residual operation is conducted.
  • Page 138 SiBE37-701 Special Control 3.5.2 Pump-down Residual Operation in Heating Operation and Simultaneous Cooling / Heating Operation Elect. symbol Actuator Symbol Master unit operation Slave unit operation REYQ REMQ Compressor 1 M1C M1C Compressor 2 — M2C M2C 124 Hz+OFF+OFF Compressor 3 M3C M3C Outdoor unit fan 1 —...

  • Page 139: Standby

    Special Control SiBE37-701 Standby 3.6.1 Restart Standby Used to forcedly stop the compressor for a period of 2 minutes, in order to prevent the frequent ON/OFF of the compressor and equalize the pressure within the refrigerant system. Elect. Operation symbol Actuator Symbol REYQ8~16P...

  • Page 140: Stopping Operation

    SiBE37-701 Special Control Stopping Operation 3.7.1 When System is in Stop Mode (Normal operation stop) This mode is used to define actuator operations when the system stops. Elect. Operation symbol Actuator Symbol REYQ8~16P REMQ8P REMQ10•12P REMQ14•16P REYQ REMQ Compressor1 — M1C M1C Compressor2 —...

  • Page 141: Protection Control

    Protection Control SiBE37-701 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] ★...
  • Page 142 SiBE37-701 Protection Control [Heating Operation and Simultaneous Cooling / Heating Operation] ★ The following control is performed in the entire system. Pc_max indicates the maximum value within the system. Normal Operation Pc_max>3.31MPa Pc_max<2.94MPa When high pressure is limited Compressor step: 7 STEP down Pc_max After 10 sec.

  • Page 143: Low Pressure Protection Control

    Protection Control SiBE37-701 Low Pressure Protection Control This low pressure protection control is used to protect compressors against the transient decrease of low pressure. [In cooling operation] ★ Because of common low pressure, the following control is performed in the system. Pe_min indicates the minimum value within the system.
  • Page 144 SiBE37-701 Protection Control [In heating operation and Simultaneous Cooling / Heating Operation] ★ The following control is performed in the system. Pe_min indicates the minimum value within the system. Normal Operation Pe_min Pe_min>0.23MPa & <0.17MPa Upper limit compressor step=max (Max. step) During the control of low pressure protection Compressor step: 2-step down...

  • Page 145: Discharge Pipe Protection Control

    Protection Control SiBE37-701 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. [Contents] ★ The following control is performed for each compressor of single unit as well as multi units. [INV compressor] Normal operation HTdi<100˚C...

  • Page 146: Inverter Protection Control

    SiBE37-701 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. ★ In the case of multi-outdoor-unit system, each INV compressor performs these controls in the following sequence.
  • Page 147 Protection Control SiBE37-701 [Inverter fin temperature control] ★ Perform the following control of integrated as well as multi units for each INV compressor. Normal operation Tfin>84˚C Tfin<81˚C & INV upper limit frequency=max (210Hz) During the control of fin temperature protection INV Comp.

  • Page 148: Std Compressor Overload Protection

    SiBE37-701 Protection Control STD Compressor Overload Protection This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of STD compressor such as locking. STD compressor ON *If the power supply is reset while in operation prohibition mode, the prohibition Demand to operate.

  • Page 149: Other Control

    Other Control SiBE37-701 Other Control Backup Operation If any of the compressors goes wrong, disable the relevant compressor or the relevant outdoor unit from operating, and then conduct emergency operation only with operational compressors or outdoor units. "Emergency operation with remote controller reset" and "Emergency operation with outdoor unit PC board setting"...

  • Page 150: Outline Of Control (Indoor Unit)

    SiBE37-701 Outline of Control (Indoor Unit) 6. Outline of Control (Indoor Unit) Operation Flow Chart Cooling Operation Start (Option) Turn ON Aux. electric : OFF power supply heater Humidifier : OFF Initialize electronic expansion valve Detect louver lock The previous settings of air LED in remote flow rate, wind direction, and controller turns ON...
  • Page 151 Outline of Control (Indoor Unit) SiBE37-701 Microcomputer dry operation Heating Operation (option) Microcomputer dry display Drain : OFF pump kit Thermostat status : Operating in L mode after it stops for 6 min. Operating in L mode Swing flap? Electronic 20E : expansion valve Electronic...

  • Page 152: Thermostat Control

    SiBE37-701 Outline of Control (Indoor Unit) Thermostat Control 6.2.1 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 153 Outline of Control (Indoor Unit) SiBE37-701 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 154 SiBE37-701 Outline of Control (Indoor Unit) 6.2.2 Thermostat Control while in Normal Operation VRV multi systems are set at factory to thermostat control mode using the remote controller. While in normal thermostat differential control mode (i.e., factory set mode), the thermostat turns OFF when the system reaches a temperature of -1°C from the set temperature while in cooling operation or of +1°C from that while in heating operation.
  • Page 155 Outline of Control (Indoor Unit) SiBE37-701 6.2.4 Thermostat Control with Operation Mode Set to "AUTO" When the operation mode is set to "AUTO" on the remote controller, the system will conduct the temperature control shown below. Furthermore, setting changes of the differential value (D°C) can be made according to information in the "Field settings with remote controller (p.

  • Page 156: Drain Pump Control

    SiBE37-701 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). 6.3.1 When the Float Switch is Tripped while the Cooling Thermostat is ∗...
  • Page 157 Outline of Control (Indoor Unit) SiBE37-701 6.3.3 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. 6.3.4 When the Float Switch is Tripped and “AF”...

  • Page 158: Control Of Electronic Expansion Valve

    SiBE37-701 Outline of Control (Indoor Unit) Control of Electronic Expansion Valve Electronic expansion valves in indoor units have the functions of conducting superheated degree control in cooling operation and subcooled degree control in heating operation. However, if the indoor units receive any control command such as a protection control command or a special control command from the outdoor unit, the units will give a priority to the control command.

  • Page 159: Freeze Prevention

    Outline of Control (Indoor Unit) SiBE37-701 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 160: Heater Control (Optional Pc Board Krp1B

    SiBE37-701 Outline of Control (Indoor Unit) Heater Control (Optional PC Board KRP1B...is required.) The heater control is conducted in the following manner. [Normal control] While in heating operation, the heater Set temperature control (ON/OFF) is conducted as shown on the right. 2ºC 2ºC [Overload control]...

  • Page 161: List Of Swing Flap Operations

    Outline of Control (Indoor Unit) SiBE37-701 List of Swing Flap Operations Swing flaps operate as shown in table below. Flap FXCQ FXFQ FXHQ FXAQ FXKQ Swing Horizontal Horizontal Horizontal Hot start from defrosting operation Wind direction set OFF Horizontal Horizontal Horizontal Swing Horizontal...

  • Page 162: Hot Start Control (In Heating Operation Only)

    SiBE37-701 Outline of Control (Indoor Unit) Hot Start Control (In Heating Operation Only) At startup with thermostat ON or after the completion of defrosting in heating operation, the indoor unit fan is controlled to prevent cold air from blasting out and ensure startup capacity. [Detail of operation] When either the start condition 1 or the start condition 2 is established, the operations shown below will be conducted.

  • Page 163: Louver Control For Preventing Ceiling Dirt

    Outline of Control (Indoor Unit) SiBE37-701 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 164: Part 5 Test Operation

    SiBE37-701 Part 5 Test Operation Test Operation ..................154 1.1 Installation Process ................154 Procedure and Outline .................155 Operation when Power is Turned On ...........187 Outdoor Unit PC Board Layout ............188 Field Setting ..................189 Field Setting from Remote Controller ...........189 3.2 Field Setting from Outdoor Unit............202 Test Operation...

  • Page 165: Test Operation

    Test Operation SiBE37-701 1. Test Operation Installation Process Below Figure shows the installation process. Install in the order of the steps shown. 3. Selection of Location 4. Inspecting and Handling the Unit 5. Placing the Unit 7. Field Wiring 6. Refrigerant Piping 8.

  • Page 166: Procedure And Outline

    SiBE37-701 Test Operation Procedure and Outline Follow the following procedure to conduct the initial test operation after installation. 1.2.1 Check Work Prior to Turn Power Supply On Is the wiring performed as specified? Check the below items. Is the designated wire used? 2Power wiring Is the wiring screw of wiring not loose? 2Control transmission wiring...
  • Page 167 Test Operation SiBE37-701 Is a proper quantity of refrigerant charged? Check on amount of refrigerant The following method is available for additional charging of charge refrigerant. (1) Calculate additional refrigerant quantity. • Calculate a necessary additional refrigerant charging amount according to the procedure for calculation shown below.
  • Page 168 SiBE37-701 Test Operation 1.2.2 Turn Power On Be sure to turn the power on 6 hours before starting operation to protect Turn outdoor unit and indoor compressors. (to power on clankcase heater) unit power on. Check to be sure the transmission is normal. Check the LED display of the The transmission is normal if the LEDs display conditions as shown in outdoor unit PC board.
  • Page 169 Test Operation SiBE37-701 1.2.3 Air Tight Test and Vacuum Drying Note: Always use nitrogen gas for the airtightness test. Absolutely do not open the shutoff valve until the main power circuit insulation measurement has been completed. (measuring after the shutoff valve is opened will cause the insulation value to drop.) <Needed tools>...
  • Page 170 SiBE37-701 Test Operation <Air tight test> Pressurize the liquid pipe, suction gas pipe, HP/LP gas pipe and equalizer pipe from the service ports of each shutoff valve to 4.0MPa (40bar) (do not pressurize more than 4.0MPa (40bar)). If the pressure does not drop within 24 hours, the system passes the test. If there is a pressure drop, check for leaks, make repairs and perform the airtight test again.
  • Page 171 Test Operation SiBE37-701 Caulking, etc. Insulation material Piping lead-out hole lid Block “ ”. Open a knock hole at “ ”. Note: After knocking out the holes, we recommend you remove burrs in the knock holes (See above figure) and paint the edges and areas around the edges using the repair paint. 1.2.5 Additional Refrigerant Charge and Check Operation The outdoor unit is charged with refrigerant when shipped from the factory, but depending on the size and length of the piping when installed, it may require additional charging.
  • Page 172 SiBE37-701 Test Operation [Special notice of product] CLASSIFICATION This air conditioner comes under the term “appliances not accessible to the general public”. EMC CHARACTERISTICS VRVIII System is a class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.
  • Page 173 Test Operation SiBE37-701 [Shutoff Valve Operation Procedure] When operating the shutoff valve, follow the procedure instructed below. Note: Do not open the shutoff valve until “1.2.1 Check work prior to turn power supply on” in page 155 are completed. If the shutoff valve is left open without turning on the power, it may cause refrigerant to buildup in the compressor, leading insulation degradation.
  • Page 174 SiBE37-701 Test Operation Service port Seal section Hex holes Shaft (valve body) fig 34 [To open] 1. Remove the cap and turn the shaft counterclockwise with the hexagon wrench (JISB4648). 2. Turn it until the shaft stops. 3. Make sure to tighten the cap securely. (For the tightening torque, refer to the item <Tightening Torque>.) [To close] 1.
  • Page 175 Test Operation SiBE37-701 [How to Check How Many Units are Connected] It is possible to find out how many indoor or outdoor unit in the system are turned on by operating the push button on the PC-board (A1P) of outdoor unit (In case of multi system master unit).
  • Page 176 SiBE37-701 Test Operation 1.2.5.2 Procedure of Adding Refrigerant Charging and Check Operation - REYQ8~16PY1B Warning Electric Shock Warning Make sure to close the EL. COMPO. BOX lid before turning on the power when performing the refrigerant charging operation. Perform the setting on the PC board (A1P) of the outdoor unit and check the LED display after the power is on via the inspection door which is in the EL.
  • Page 177 Test Operation SiBE37-701 1.2.5.2.1 Procedure of Adding Refrigerant charging 1. Make sure the following works are complete in accordance with the installation manual. Piping work Wiring work Air tight test Vacuum drying Installation work for BS, indoor unit 2. Calculate the “additional charging amount” using “How to calculate the additional refrigerant to be charged”...
  • Page 178 SiBE37-701 Test Operation [Automatic refrigerant charging operation procedure] Note: The marks of LED mean as follows. ∗ : OFF : ON : Blinking : OFF, ON or Brinking (1) Open the liquid pipe, suction gas pipe and HP/LP gas pipe shutoff valves. (The valve A~C must be closed.
  • Page 179 Test Operation SiBE37-701 In case of heating mode (7) Push the TEST button (BS4) once within 5 minutes after procedure (5) (*4) and close the all front panels. After that, open the valve A immediately (See figure on page 167) (*6) and check the charged amount by measuring device.
  • Page 180 SiBE37-701 Test Operation [Remote controller heating mode malfunction code] Code The work contents Close the valve A immediately and push the TEST button (BS4) once. And restart from procedure (7) of “In case of heating mode”. Operation is interrupted. Close the valve A immediately and check the below items. Check if HP/LP gas pipe, suction gas pipe or liquid pipe shutoff valve is opened.
  • Page 181 Test Operation SiBE37-701 [Remote controller displays malfunction code] Malfunction Installation error Remedial action code E3, E4 The shutoff valve of the outdoor unit is F3, F6 Open the shutoff valve. left closed. The phases of the power to the outdoor Exchange two of the three phases (L1, L2, L3) to make unit is reversed.
  • Page 182 SiBE37-701 Test Operation If the check operation was not performed at first istallation, the malfunction code “U3” will be displayed in the remote controller. Perform the check operation following “ 1.2.5.2.2 Procedure of check operation”. 3. Checks After Test Run Perform the following checks after the test run is complete.
  • Page 183 Test Operation SiBE37-701 1.2.5.3 Procedure for Additional Refrigerant Charge and Check operation - REYQ18~48P7Y1B (REMQ8~16P7Y1B) Adding refrigerant using the automatic refrigerant charging function is recommended. Follow the procedures below. When charging a system, charging over the permissible quantity can cause liquid hammer. Always use protective gloves and protect your eyes when charging refrigerant.
  • Page 184 SiBE37-701 Test Operation The automatic refrigerant charging has limits as described below. At out of limit, the system can not operate the automatic refrigerant charging. Outdoor temperature : 0°C DB~43°C DB Indoor temperature : 10°C DB~32°C DB ≥ Total indoor unit capacity To speed up the process of charging refrigerant for large systems, it is recommended to first manually charge a portion of the refrigerant first before performing automatic charging.
  • Page 185 Test Operation SiBE37-701 Note: For a multi outdoor unit system, it is not required to connect all charge ports to a refrigerant tank. The refrigerant will be charged with ±30 kg in 1 hour time at an outdoor temperature of 30°C DB or with ±12 kg at an outdoor temperature of 0°C DB.
  • Page 186 SiBE37-701 Test Operation Charging in heating mode 6. Start up Wait while the unit is preparing for charging in heating mode. H1P H2P H3P H4P H5P H6P H7P h j h h h h i Pressure control (for the first minute) j j h h h i h Start up control (for the next 2 minutes)
  • Page 187 Test Operation SiBE37-701 10.In case leak detection function not required Press the BS1 MODE button once and the charging is complete. Record the amount that was added on the additional refrigerant charge label provided with the unit and attach it on the back side of the front panel. Perform the test procedure as described in "Test operation"...
  • Page 188 SiBE37-701 Test Operation 9. Complete The display on the remote controller shows a flashing " " code for signalling that automatic charging will be finished in about 10 minutes. When the unit stops operating, close valve A immediately and check the LEDs and check if the "...
  • Page 189 Test Operation SiBE37-701 [Remote controller malfunction code display] Remote controller heating mode malfunction codes Error code P8 recharge Close valve A immediately and press the TEST OPERATION button once. operation The operation will restart from the charging mode judgement onwards. Close valve A immediately.
  • Page 190 SiBE37-701 Test Operation [How to check how many units are connected] It is possible to find out how many indoor units are active and connected by operating the push- button switch on the printed circuit board (A1P) of the working outdoor unit. Make sure that all the indoor units connected to the outdoor unit are active.
  • Page 191 Test Operation SiBE37-701 1.2.6 Before operation 1.2.6.1 Service precautions WARNING: ELECTRIC SHOCK Caution when performing service to inverter equipment 1. Do not open the electric box cover for 10 minutes after the power supply is turned off. 2. Measure the voltage between terminals on the terminal block for power supply with a tester and confirm that the power supply is shut off.
  • Page 192 SiBE37-701 Test Operation After the installation, check the following before switching on the circuit breaker: 1. The position of the switches that require an initial setting Make sure that switches are set according to your application needs before turning the power supply on.
  • Page 193 Test Operation SiBE37-701 LED state Throughout the manual the state of the LEDs is indicated as follows: Blinking Setting the push button switch (BS1~5) Function of the push button switch which is located on the outdoor unit PCB (A1P): TEST: C/H SELECT MODE L.N.O.P DEMAND...
  • Page 194 SiBE37-701 Test Operation Setting the mode The set mode can be changed with the button according to the following procedure: BS1 MODE For setting mode 1: Press the button once, the H1P LED is off . This mode is BS1 MODE not available for heat recovery units.
  • Page 195 Test Operation SiBE37-701 3.2Possible settings for function C The noise of level 3 < level 2 < level 1 ( H1P H2P H3P H4P H5P H6P H7P (a) This setting = factory setting 3.3Possible settings for function D and E For function D ( ) only: the noise of level 3 <...
  • Page 196 SiBE37-701 Test Operation In the test operation, the following checks and judgement will be performed: Check of the stop valve opening Check for wrong wiring Check of refrigerant overcharge Judgement of piping length It takes between 40 and 60 minutes to complete the check operation. Make sure to carry out the test operation after the first installation.
  • Page 197 Test Operation SiBE37-701 Correcting after abnormal completion of the test operation The test operation is only completed if there is no malfunction code displayed on the remote controller. In case of a displayed malfunction code, perform the following actions to correct the abnormality: Confirm the malfunction code on the remote controller Installation error...

  • Page 198: Operation When Power Is Turned On

    SiBE37-701 Test Operation Operation when Power is Turned On 1.3.1 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 199: Outdoor Unit Pc Board Layout

    Outdoor Unit PC Board Layout SiBE37-701 Outdoor Unit PC Board Layout Outdoor unit PC board (2) Set mode display (LED) (3) Mode setting switch H1P H2P H3P H4P H5P H6P H7P H8P 1 2 3 4 1 2 3 4 MODE RETURN TEST...

  • Page 200: Field Setting

    SiBE37-701 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 201 Field Setting SiBE37-701 3.1.2 Wireless Remote Controller - Indoor Unit BRC7C type BRC7E type BRC4C type 1. When in the normal mode, push the “ ” button for 4 seconds or more, and operation then enters the “field set mode.” 2.
  • Page 202 SiBE37-701 Field Setting 3.1.3 Simplified Remote Controller BRC2A51 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 203 Field Setting SiBE37-701 3.1.4 Setting Contents and Code No. – VRV Indoor unit Mode Setting Setting Contents Second Code No.(Note 3) Details Switch system indoor Note 2 unit 10(20) Filter contamination heavy/ Super Light Approx. Heavy Approx. — — settings light (Setting for display long life 10,000...
  • Page 204 SiBE37-701 Field Setting 3.1.5 Applicable Range of Field Setting Ceiling mounted cassette Slim Concealed Concealed Concealed Ceiling Wall Floor Concealed concealed ceiling unit ceiling unit ceiling unit suspended mounted standing floor Roundflow 4-way 2-way Corner ceiling unit (small) (large) unit unit unit standing unit...
  • Page 205 Field Setting SiBE37-701 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 206 SiBE37-701 Field Setting (6) External ON/OFF input This input is used for "ON / OFF operation" and "Protection device input" from the outside. The input is performed from the T1-T1 terminal of the operation terminal block (X1A) in the electric component box.
  • Page 207 Field Setting SiBE37-701 (10) Auto Restart after Power Failure Reset For the air conditioners with no setting for the function (same as factory setting), the units will be left in the stop condition when the power supply is reset automatically after power failure reset or the main power supply is turned on again after once turned off.
  • Page 208 SiBE37-701 Field Setting (13) Air Flow Direction Setting Set the air flow direction of indoor units as given in the table below. (Set when optional air outlet blocking pad has been installed.) The second code No. is factory set to “01.” Setting Table Second Code Mode No.
  • Page 209 Field Setting SiBE37-701 (18) Setting of Direct Duct Connection This is used when "fresh air intake kit equipped with fan" is connected. The indoor fan carries out residual operation for one minute after the thermostat is stopped. (For the purpose of preventing dust on the air filter from falling off.) Mode No.
  • Page 210 SiBE37-701 Field Setting 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 211 Field Setting SiBE37-701 Group No. Setting Example Centoral Remote Controller Indoor/Outdoor Outdoor/Outdoor Indoor/Outdoor Outdoor/Outdoor F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 Group Control by Remote Contoller Main 1-00...
  • Page 212 SiBE37-701 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 213: Field Setting From Outdoor Unit

    Field Setting SiBE37-701 Field Setting from Outdoor Unit 3.2.1 Field Setting from Outdoor Unit List of Field Setting Items This following section indicates the list of field setting items. For the lists of dip switch contents, Setting mode 1, and Setting mode 2, refer to information in tables shown on the following page onward.
  • Page 214 SiBE37-701 Field Setting Overview of setting procedure Reference Setting item Content and objective of setting page Indoor unit 211~214 Used to operate the indoor unit in the fan forced H Set No. 5 of "Setting mode 2" to indoor stopped state in forced H operation operation unit forced fan H.
  • Page 215 Field Setting SiBE37-701 3.2.2 Setting by Dip Switches (1) Factory setting of initial PC board. Do not make any changes in all factory settings of the DIP switches on the control PC board. Status of DIP switches : Represents the factory setting positions of the switches.
  • Page 216 SiBE37-701 Field Setting “Detail of DS1-1~4, DS2-1~4 setting” Single Use A1P (Main) Factory Set ( represents the position of switches) DS1 DS2 EB**** Allocation Application model Setting method ( represents the position of switches) HEAT RECOVERY(8HP) REYQ8PY1B Set DS1-4 and DS2-3 to ON. 1 2 3 1 2 3 4 HEAT RECOVERY(10HP)
  • Page 217 Field Setting SiBE37-701 Single Use A3P (Sub) Factory Set ( represents the position of switches) DS1 DS2 EB**** Allocation Application model Setting method ( represents the position of switches) HEAT RECOVERY(8HP) REYQ8PY1B Set DS1-3 and DS2-2 to ON. 1 2 3 1 2 3 4 HEAT RECOVERY(10HP) REYQ10PY1B...
  • Page 218 SiBE37-701 Field Setting Multiple Type Allocation Application model Setting method ( represents the position of switches) HEAT RECOVERY(8HP) REMQ8PY1B Set DS1-4, DS2-2 and DS2-3 to ON. 1 2 3 1 2 3 4 HEAT RECOVERY(10HP) REMQ10PY1B Set DS1-4 and DS2-4 to ON. 1 2 3 1 2 3 4 HEAT RECOVERY(12HP)
  • Page 219 Field Setting SiBE37-701 3.2.3 Setting by Push Button Switches The following settings are made by push button switches on PC board. In case of multi-outdoor unit system, various items should be set with the master unit. (Setting with the slave unit is disabled.) The master unit and slave unit can be discriminated with the LED display as shown below.
  • Page 220 SiBE37-701 Field Setting Mode changing procedure 2 (Set): Select mode with BS2 (SET button) in each selection step. Setting mode 1 Press BS1 (MODE button) for more than 5 sec. Press BS1(MODE button). (Initial condition) Setting mode 2 Monitor mode Setting item selection Check item selection (SET button)
  • Page 221 Field Setting SiBE37-701 a. “Setting mode 1” This mode is used to set and check the following items. Check items ··········· The following items can be checked. (1) Current operating conditions (Normal / Abnormal / In check operation) (2) Low noise operating conditions (In normal operation / In low noise operation) (3) Demand operating conditions (In normal operation / In demand operation) Procedure for checking check items The system is normally set to "Setting...
  • Page 222 SiBE37-701 Field Setting Setting item Description b. “Setting mode 2” Used to make setting of contents to display on the digital Digital pressure pressure gauges (e.g. pressure sensors and temperature gauge kit display sensors) Push and hold the MODE (BS1) button for 5 seconds and set to Cool/heat unified Sets address for cool/heat unified operation.
  • Page 223 Field Setting SiBE37-701 Setting item Description Emergency operation (Setting for the unit 1 operation prohibition in multi- outdoor-unit system) Emergency operation Used to temporarily prohibit the applicable outdoor unit (Setting for the unit from operating should there be any faulty part in multi- 2 operation outdoor-unit system.
  • Page 224 SiBE37-701 Field Setting Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set k h h h h h h ∗ Address k h h h h h k Binary number Digital pressure gauge kit display (4 digits)
  • Page 225 Field Setting SiBE37-701 Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set k h h h h h k ∗ ENECUT test ENECUT output OFF operation (Domestic k h h h h k h Japan only) ENECUT output forced ON k h h h h h k...
  • Page 226 SiBE37-701 Field Setting c. Monitor mode LED display Setting item Data display H2P H3P H5P H6P l h h h h h h To enter the monitor mode, push the Various settings Lower 4 digits MODE (BS1) button when in l h h h h h k “Setting mode 1”.
  • Page 227 Field Setting SiBE37-701 Setting item 0 Display contents of “Number of units for various settings” l h h k h h h EMG operation / backup operation l h h h h h h setting l h h h k h h Defrost select setting Short l h h h l h h...
  • Page 228 SiBE37-701 Field Setting 3.2.4 Cool / Heat Mode Switching Set Cool/Heat Separately for Each BS Unit by Cool/Heat Selector. Set remote controller change over switch (SS1, SS2) as following: • When using COOL/HEAT selector, turn this switch to the BS side. NOTE: This setting must be completed before turning power supply ON.
  • Page 229 Field Setting SiBE37-701 3.2.5 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. Setting Content Level 1...
  • Page 230 SiBE37-701 Field Setting Image of operation in the case of A Operation sound Rated operation sound Operation sound of Approx. 55 db (target) level 1 Operation sound of Approx. 50 db (target) level 2 Operation sound of level 3 Approx. 45 db (target) Note1: Above values are reference only (measured in silent room) Note2: Above values are for 1 module only.
  • Page 231 Field Setting SiBE37-701 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. Description of setting Setting procedure Setting External control...
  • Page 232 SiBE37-701 Field Setting Image of operation in the case of A Power consumption The power Rated power consumption consumption during 80 % of rated power consumption Demand level 1 instructing Demand level 2 instructing Demand level 3 instructing the demand level 1 70 % of rated power consumption instructing can be 60 % of rated power consumption...
  • Page 233 Field Setting SiBE37-701 Detailed Setting Procedure of Low Noise Operation and Demand Control 1. Setting mode 1 (H1P off) → In setting mode 2, push the BS1 (MODE button) one time. Setting mode 2 is entered and H1P lights. During the setting mode 1 is displayed, “In low noise operation” and “In demand control” are displayed.

  • Page 234: Night-Time

    SiBE37-701 Field Setting : 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 235 Field Setting SiBE37-701 3.2.6 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 “Refrigerant Recovery / Vacuuming mode” to ON.
  • Page 236 SiBE37-701 Field Setting 3.2.7 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] With Setting Mode 2 while the unit stops, set “Refrigerant recovery / Vacuuming mode” to ON.

  • Page 237: Emergency Operation

    Field Setting SiBE37-701 3.2.9 Emergency Operation If any of the compressors goes wrong, disable the relevant compressor or the relevant outdoor unit from operating, and then conduct emergency operation only with operational compressors or outdoor units. There are two ways of conducting the Emergency operation : with remote controller reset and by setting outdoor unit PC board.
  • Page 238 SiBE37-701 Field Setting k Disabling the compressor 2 (on the left side) from operating: Set No. 39 of setting mode 2 to "Disable-compressor-2 operation". LED display ( : ON, : OFF, : Blink) (Step) H1P-----------H7P (1) Press the PAGE button (BS1) for 5 k h h h h h h seconds or more.
  • Page 239 Field Setting SiBE37-701 [Cancel of Emergency Operation] To cancel the emergency operation, conduct the following setting. (Return to Factory setting.) <REYQ8 to 16PY1> k Cancel disabling the compressor 1 (on the right side) from operating: Set No. 38 "Disable-compressor-1 operation" of setting mode 2 to "OFF". LED display ( : ON, : OFF,...
  • Page 240 SiBE37-701 Field Setting k Cancel disabling the outdoor unit 2 from operating: Set No. 39 "Disable-outdoor-unit-2 operation" of setting mode 2 to "OFF". LED display ( : ON, : OFF, : Blink) (Step) H1P-----------H7P (1) Press the PAGE button (BS1) for 5 k h h h h h h seconds or more.
  • Page 241 Field Setting SiBE37-701 3.2.10 Prevention of Micro Heating in Non-operating Unit In heating operation, this setting is made to prevent room temperature from rising due to micro heating capacity generated in the unit with its heating thermostat OFF or in the unit with its heating operation stopped.

  • Page 242: Part 6 Troubleshooting

    SiBE37-701 Part 6 Troubleshooting 1. Symptom-based Troubleshooting ............234 2. Troubleshooting by Remote Controller ..........237 2.1 The INSPECTION / TEST Button............237 2.2 Self-diagnosis by Wired Remote Controller .........238 2.3 Self-diagnosis by Wireless Remote Controller ........239 2.4 Inspection Mode ...................242 2.5 Remote Controller Service Mode ............243 2.6 Test Run Mode..................245 2.7 Remote Controller Self-Diagnosis Function .........245 3.
  • Page 243 SiBE37-701 3.27 “J4” Outdoor Unit: Malfunction of Temperature Sensor for Heat Exchanger Gas (R2T or R11T)............295 3.28 “J5” Outdoor Unit: Malfunction of Thermistor (R8T or R10T) for Suction Pipe ..................296 3.29 “J6” Outdoor Unit: Malfunction of Thermistor (R4T or R12T) for Outdoor Unit Heat Exchanger ..............297 3.30 “J7”...
  • Page 244 SiBE37-701 4.3 “MA” Improper Combination of Optional Controllers for Centralized Control................360 4.4 “MC” Address Duplication, Improper Setting .........362 5. Troubleshooting (OP: Unified ON/OFF Controller) ......363 5.1 Operation Lamp Blinks .................363 5.2 Display “Under Centralized Control” Blinks (Repeats Single Blink)................365 5.3 Display “Under Centralized Control” Blinks (Repeats Double Blink) ................368 Troubleshooting...

  • Page 245: Symptom-Based Troubleshooting

    Symptom-based Troubleshooting SiBE37-701 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 246 SiBE37-701 Symptom-based Troubleshooting Symptom Supposed Cause Countermeasure The system This symptom occurs The system is in preparation Wait for a period of approximately conducts fan immediately after turning ON mode of operation. 10 minutes. operation but not the power supply. cooling or heating operation.
  • Page 247 Symptom-based Troubleshooting SiBE37-701 Symptom Supposed Cause Countermeasure 12 Dust comes out Dust comes out from the Dust, which has deposited on the Normal operation. from the system. system when it restarts after inside of indoor unit, is blown out the stop for an extended period from the system.

  • Page 248: Troubleshooting By Remote Controller

    SiBE37-701 Troubleshooting by Remote Controller 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 249: Self-Diagnosis By Wired Remote Controller

    Troubleshooting by Remote Controller SiBE37-701 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 250: Self-Diagnosis By Wireless Remote Controller

    SiBE37-701 Troubleshooting by Remote Controller 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 251 Troubleshooting by Remote Controller SiBE37-701 The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed. Troubleshooting...
  • Page 252 SiBE37-701 Troubleshooting by Remote Controller Troubleshooting...

  • Page 253: Inspection Mode

    Troubleshooting by Remote Controller SiBE37-701 Inspection Mode Operating the INSPECTION/TEST button on the remote controller will make it possible to check the malfunction codes, indoor unit model codes, and outdoor unit model codes while in inspection mode. Unit Malfunction code Inspection Normal display (No display) Malfunction code blinks when a malfunction occurs.

  • Page 254: Remote Controller Service Mode

    SiBE37-701 Troubleshooting by Remote Controller Remote Controller Service Mode Operating the CHECK/TEST button on the remote controller will make it possible to obtain "service data" and change "service setting" while in service mode. How to Enter the Service Mode Service Mode 1.
  • Page 255 Troubleshooting by Remote Controller SiBE37-701 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 button. Malfunction code Malfunction code Hystory No: 1 - 9 1: Latest (VE007) Display of sensor...

  • Page 256: Test Run Mode

    SiBE37-701 Troubleshooting by Remote Controller Test Run Mode Operating the INSPECTION/TEST button on the remote controller will make it possible to put the system into test run mode. (1) Test run mode setting The test run mode setting can be made by conducting the following operation. Normal Test run operation...
  • Page 257 Troubleshooting by Remote Controller SiBE37-701 k: ON h: OFF l: Blink Malfunction Operation Inspection Unit No. Malfunction contents Page code lamp display Referred Indoor Unit Error of external protection device PC board defect Malfunction of drain level control system (S1L) Fan motor (M1F) lock, overload Malfunction of indoor unit fan motor Overload/Overcurrent/Lock of indoor unit fan motor...
  • Page 258 SiBE37-701 Troubleshooting by Remote Controller k: ON h: OFF l: Blink Malfunction Operation Inspection Unit No. Malfunction contents Page code lamp display Referred Outdoor Unit Malfunction of power unit — Malfunction of transmission between inverter and control PC board Inverter over-ripple protection Malfunction of inverter radiating fin temperature rise sensor Faulty field setting after replacing main PC board or...
  • Page 259 Troubleshooting by Remote Controller SiBE37-701 Malfunction code indication by outdoor unit Malfunctions Malfunction PC board code Description of malfunction Description of malfunction (PGF) Remote <Monitor mode> controller PC board malfunction PC board malfunction To enter the monitor mode, push the Faulty PC board MODE (BS1) button when in Abnormal discharge pressure...
  • Page 260 SiBE37-701 Troubleshooting by Remote Controller k: ON h: OFF l:Blink Confirmation of malfunction 1 (Check 1) Confirmation of malfunction 2 (Check 2) Confirmation of malfunction 3 (Check 3) Confirmation of malfunction 4 (Check 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 261 Troubleshooting by Remote Controller SiBE37-701 <Monitor mode> Malfunctions Malfunction code To enter the monitor mode, push the Description of malfunction Description of malfunction (PGF) Remote MODE (BS1) button when in controller “Setting mode 1”. Open phase and unbalanced power Unbalanced INV power supply voltage supply INV radiation fin temperature sensor INV fin thermistor malfunction...
  • Page 262 SiBE37-701 Troubleshooting by Remote Controller k: ON h: OFF l:Blink Confirmation of malfunction 1 (Check 1) Confirmation of malfunction 2 (Check 2) Confirmation of malfunction 3 (Check 3) Confirmation of malfunction 4 (Check 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 263: Troubleshooting By Indication On The Remote Controller

    Troubleshooting by Indication on the Remote Controller SiBE37-701 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 Detect open or short circuit between external input terminals in indoor unit. Malfunction Detection Malfunction...

  • Page 264: A1" Indoor Unit

    SiBE37-701 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 265: A3" Indoor Unit: Malfunction Of Drain Level Control System (S1L)

    Troubleshooting by Indication on the Remote Controller SiBE37-701 “ ” Indoor Unit: Malfunction of Drain Level Control System (S1L) Remote Controller Display Applicable FXCQ, FXFQ, FXSQ, FXKQ, FXDQ, FXMQ, FXHQ (Option), FXMQ200,250M (Option), FXAQ (Option) Models Method of By float switch OFF detection Malfunction Detection Malfunction...
  • Page 266 SiBE37-701 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 267: A6" Indoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE37-701 “ ” Indoor Unit: Fan Motor (M1F) Lock, Overload Remote Controller Display Applicable FXAQ20~63MAVE, FXFQ20~125P7VE Models Method of Abnormal fan revolutions are detected by a signal output from the fan motor. Malfunction Detection Malfunction When the fan revolutions do not increase...
  • Page 268 SiBE37-701 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 OFF the power supply, and then wait for a period of 10 minutes. Are there any foreign matters Remove the foreign matters.

  • Page 269: A6" Indoor Unit : Malfunction Of Indoor Unit Fan Motor

    Troubleshooting by Indication on the Remote Controller SiBE37-701 “ ” Indoor Unit : Malfunction of Indoor Unit Fan Motor Remote Controller Display Applicable FXHQ32~100MAVE, FXDQ20~63NAVE Models Method of This malfunction is detected if there is no revolutions detection signal output from the fan motor. Malfunction Detection Malfunction...

  • Page 270: A6" Indoor Uint : Overload / Overcurrent

    SiBE37-701 Troubleshooting by Indication on the Remote Controller “ ” Indoor Uint : Overload / Overcurrent / Lock of Indoor Unit Fan Motor Remote Controller Display Applicable FXMQ40~125MAVE Models Method of This malfunction is detected by detecting that the individual power supply for the fan turns OFF. Malfunction Detection Malfunction...

  • Page 271: A7" Indoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE37-701 “ ” Indoor Unit: Malfunction of Swing Flap Motor (M1S) Remote Controller Display Applicable FXCQ, FXHQ, FXKQ Models Method of Utilizes ON/OFF of the limit switch when the motor turns. Malfunction Detection Malfunction When ON/OFF of the microswitch for positioning cannot be reversed even though the swing flap motor is energized for a specified amount of time (about 30 seconds).
  • Page 272 SiBE37-701 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. Indoor unit is a model equipped Replace indoor unit PC board.

  • Page 273: A9" Electronic Expansion Valve Malfunction / Dust Clogging

    Troubleshooting by Indication on the Remote Controller SiBE37-701 “ ” Electronic Expansion Valve Malfunction / Dust Clogging Remote Controller Display Applicable FXFQ25~125P Models Method of Check coil condition of electronic expansion valve by using microcomputer. Check dust clogging condition of electronic expansion valve main body by using Malfunction microcomputer.
  • Page 274 SiBE37-701 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. When power is supplied. Replace electronic expansion valve main body. Electronic expansion valve is Shut the power supply off after connected to X7A of connection and then restart.

  • Page 275: A9" Indoor Unit: Malfunction Of Electronic Expansion Valve Coil

    Troubleshooting by Indication on the Remote Controller SiBE37-701 “ ” Indoor Unit: Malfunction of Electronic Expansion Valve Coil Remote Controller Display Applicable Indoor units except FXFQ models Models Method of Check coil condition of electronic expansion valve by using microcomputer. Malfunction Detection Malfunction...
  • Page 276 SiBE37-701 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. Electronic expansion valve Shut the power supply off after is connected to X7A of connection and then restart.

  • Page 277: Drain Level Above Limit

    Troubleshooting by Indication on the Remote Controller SiBE37-701 “ ” Indoor Unit: Drain Level above Limit Remote Controller Display Applicable FXCQ, FXFQ, 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 278: Aj" Indoor Unit: Malfunction Of Capacity Determination Device

    SiBE37-701 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 279: C4" Indoor Unit: Malfunction Of Thermistor (R2T) For

    Troubleshooting by Indication on the Remote Controller SiBE37-701 “ ” 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 280: C5" Indoor Unit: Malfunction Of Thermistor (R3T) For Gas Pipes

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.10 “ ” 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 281: C9" Indoor Unit: Malfunction Of Thermistor (R1T) For Suction Air

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.11 “ ” 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 282: Cj" Indoor Unit: Malfunction Of Thermostat Sensor In

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.12 “ ” 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 283: E1" Outdoor Unit: Pc Board Defect

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.13 “ ” Outdoor Unit: PC Board Defect Remote Controller Display Applicable REYQ8P~48P Models Method of Abnormality is detected under the communication conditions in the hardware section between the indoor unit and outdoor unit. Malfunction Detection Malfunction...

  • Page 284: E3" Outdoor Unit

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.14 “ ” Outdoor Unit: Actuation of High Pressure Switch Remote Controller Display Applicable REYQ8P~48P 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 285 Troubleshooting by Indication on the Remote Controller SiBE37-701 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 286: E4" Outdoor Unit

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.15 “ ” Outdoor Unit: Actuation of Low Pressure Sensor Remote Controller Display Applicable REYQ8P~48P 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 compressor operation.
  • Page 287 Troubleshooting by Indication on the Remote Controller SiBE37-701 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.

  • Page 288: Outdoor Unit: Inverter Compressor Motor Lock

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.16 “ ” Outdoor Unit: Inverter Compressor Motor Lock Remote Controller Display Applicable REYQ8P~48P 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 289 Troubleshooting by Indication on the Remote Controller SiBE37-701 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check if Local factor the stop valve is open. Open the stop valve. Check if the relay wires to the Replace the connecting wires and...

  • Page 290: Outdoor Unit: Std Compressor Motor Overcurrent/Lock

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.17 “ ” Outdoor Unit: STD Compressor Motor Overcurrent/ Lock Remote Controller Display Applicable REYQ8P~48P Models Method of Detects the overcurrent with current sensor (CT). Malfunction Detection Malfunction Malfunction is decided when the detected current value exceeds the below mentioned value for 2 seconds.

  • Page 291: E7" Outdoor Unit: Malfunction Of Outdoor Unit Fan Motor

    Troubleshooting by Indication on the Remote Controller SiBE37-701 “ ” 3.18 Outdoor Unit: Malfunction of Outdoor Unit Fan Motor Remote Controller Display Applicable REYQ8P~48P Models Method of Detect a malfunction based on the current value in the INVERTER PC board (as for motor 2, current value in the fan PC board).
  • Page 292 SiBE37-701 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 in the monitor mode 12HP ~18HP class models have 2 fans. Check electric motor (electric motor 1 or 2) corresponding to malfunction code “E7”...
  • Page 293 Troubleshooting by Indication on the Remote Controller SiBE37-701 Troubleshooting No continuity of fuse (FIU) on the fan Replace fan inverter PC inverter PC board. board. Unable to rotate the fan manually Replace the corresponding with ease when removing the connector of the fan motor.

  • Page 294: E9" Outdoor Unit

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.19 “ ” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E~Y5E) Remote Controller Display Applicable REYQ8P~48P Models Method of Check disconnection of connector To be detected based on continuity existence of coil of electronic expansion valve Malfunction Detection Malfunction...
  • Page 295 Troubleshooting by Indication on the Remote Controller SiBE37-701 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 296: F3" Outdoor Unit

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.20 “ ” Outdoor Unit: Abnormal Discharge Pipe Temperature Remote Controller Display Applicable REYQ8P~48P 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 (135 °C and above)
  • Page 297 Troubleshooting by Indication on the Remote Controller SiBE37-701 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Connect the service checker. Press reset and start operation again. Check if discharge pipe Replace discharge pipe thermister.

  • Page 298: Outdoor Unit: Refrigerant Overcharged

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.21 “ ” Outdoor Unit: Refrigerant Overcharged Remote Controller Display Applicable REYQ8P~48P Models Method of Excessive charging of refrigerant is detected by using the outside air temperature, heat exchanging deicer temperature and liquid pipe temperature during a check run. Malfunction Detection Malfunction...

  • Page 299: F9" Outdoor Unit : Malfunction Of Bs Unit

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.22 “ ” Outdoor Unit : Malfunction of BS Unit Electronic Expansion Valve Remote Controller Display Applicable BS unit Models Method of This malfunction is detected by whether or not all coils of the electronic expansion valve have continuity.
  • Page 300 SiBE37-701 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 OFF the power supply once and then ON again. Does the power supply normally Probe any external causes come back ON?

  • Page 301: Outdoor Unit: Abnormal Outdoor Fan Motor Signal

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.23 “ ” Outdoor Unit: Abnormal Outdoor Fan Motor Signal Remote Controller Display Applicable REYQ8P~48P Models Method of Detection of abnormal signal from fan motor. Malfunction Detection Malfunction In case of detection of abnormal signal at starting fan motor. Decision Conditions Supposed...
  • Page 302 SiBE37-701 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 the fan motor corresponding to the malfunction code “ ” in the monitor mode. (Refer to P248~P249 for how to check) When check 3 shows as follows: →...

  • Page 303: H9" Outdoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.24 “ ” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected from the temperature detected by the outdoor air thermistor. Malfunction Detection Malfunction...

  • Page 304: Outdoor Unit: Current Sensor Malfunction

    SiBE37-701 Troubleshooting by Indication on the Remote Controller “ ” 3.25 Outdoor Unit: Current Sensor Malfunction Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected according to the current value detected by current sensor. Malfunction Detection Malfunction When the current value detected by current sensor becomes 5A or lower, or 40A or more during standard compressor operation.

  • Page 305: J3" Outdoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.26 “ ” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R31T, R32T, R33T) Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected from the temperature detected by discharge pipe temperature thermistor.

  • Page 306: J4" Outdoor Unit

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.27 “ ” Outdoor Unit: Malfunction of Temperature Sensor for Heat Exchanger Gas (R2T or R11T) Remote Controller Display Applicable REYQ8P~48P Models Method of Detect malfunction based on the temperature detected by each thermistor. Malfunction Detection Malfunction...

  • Page 307: Suction Pipe

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.28 “ ” Outdoor Unit: Malfunction of Thermistor (R8T or R10T) for Suction Pipe Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected from the temperature detected by the suction pipe temperature thermistor.

  • Page 308: Outdoor Unit Heat Exchanger

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.29 “ ” Outdoor Unit: Malfunction of Thermistor (R4T or R12T) for Outdoor Unit Heat Exchanger Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected from the temperature detected by the heat exchanger thermistor. Malfunction Detection Malfunction...

  • Page 309: J7" Outdoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.30 “ ” Outdoor Unit: Malfunction of Liquid Pipe Thermistor 1 (R6T, R9T or R14T) Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected according to the temperature detected by liquid pipe thermistor. Malfunction Detection Malfunction...

  • Page 310: (R7T Or R15T)

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.31 “ ” Outdoor Unit: Malfunction of Liquid Pipe Thermistor 2 (R7T or R15T) Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected according to the temperature detected by liquid pipe thermistor. Malfunction Detection Malfunction...

  • Page 311: J9" Outdoor Unit: Malfunction Of Subcooling Heat Exchanger Gas Pipe Thermistor (R5T Or R13T)

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.32 “ ” Outdoor Unit: Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor (R5T or R13T) Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor.

  • Page 312: Ja" Outdoor Unit

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.33 “ ” Outdoor Unit: Malfunction of High Pressure Sensor Remote Controller Display Applicable REYQ8P~48P 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 313 Troubleshooting by Indication on the Remote Controller SiBE37-701 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Confirm which high pressure sensor is abnormal using outdoor unit "monitor mode". (Refer to P248~249) 1.Set the high pressure gauge upright.

  • Page 314: Jc" Outdoor Unit

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.34 “ ” Outdoor Unit: Malfunction of Low Pressure Sensor Remote Controller Display Applicable REYQ8P~48P 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. (Not less than 1.77MPa, or -0.01MPa and below) Decision Conditions...
  • Page 315 Troubleshooting by Indication on the Remote Controller SiBE37-701 ∗ 1: Voltage measurement point ∗ 2: Refer to “Pressure Sensor, Pressure / Voltage Characteristics” table on P439. Troubleshooting...

  • Page 316: L1" Outdoor Unit: Defective Inverter Pc Board

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.35 “ ” Outdoor Unit: Defective Inverter PC Board Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected based on the current value during waveform output before starting compressor. Malfunction Malfunction is detected based on the value from current sensor during synchronous operation Detection when starting the unit.
  • Page 317 Troubleshooting by Indication on the Remote Controller SiBE37-701 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn OFF the power supply once, and then check the compressor lead wires. Do the lead wires have any Replace the lead wires.

  • Page 318: L4" Outdoor Unit

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.36 “ ” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Remote Controller Display Applicable REYQ8P~48P 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 87°C.
  • Page 319 Troubleshooting by Indication on the Remote Controller SiBE37-701 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is the individual system applied to the outdoor unit? Individual system Multi system While in monitor mode, check While in monitor mode, whether the system is right-...
  • Page 320 SiBE37-701 Troubleshooting by Indication on the Remote Controller Inverter PC board for compressor ∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P437. Troubleshooting...

  • Page 321: L5" Outdoor Unit: Momentary Overcurrent Of Inverter Compressor

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.37 “ ” Outdoor Unit: Momentary Overcurrent of Inverter Compressor Remote Controller Display Applicable REYQ8P~48P 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 322 SiBE37-701 Troubleshooting by Indication on the Remote Controller Troubleshooting Compressor inspection Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check if the stop valve is Open the stop valve. open.

  • Page 323: L8" Outdoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.38 “ ” Outdoor Unit: Momentary Overcurrent of Inverter Compressor Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected by current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected. (Inverter secondary current 16.1A) (1) 19.0A and over continues for 5 seconds.
  • Page 324 SiBE37-701 Troubleshooting by Indication on the Remote Controller Troubleshooting Output current check Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check if the Open the stop valve. stop valve is open. Check if the compressor lead wires are Replace compressor...

  • Page 325: Inverter Compressor Starting Failure

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.39 “ ” Outdoor Unit: Inverter Compressor Starting Failure Remote Controller Display Applicable REYQ8P~48P Models Method of Detect the failure based on the signal waveform of the compressor. Malfunction Detection Malfunction Starting the compressor does not complete. Decision Conditions Supposed...
  • Page 326 SiBE37-701 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 individual system applied to the outdoor unit? Individual system Multi system While in monitor mode, check While in monitor mode, whether the system is right-...
  • Page 327 Troubleshooting by Indication on the Remote Controller SiBE37-701 Troubleshooting Continued from the previous page. (Start failure due to aged operation.) Refrigerant is sleeping. ( The unit is out Cancel the sleeping state of of power supply for more refrigerant. than 6 hours.) Check if the insulation resistance of the Replace the inverter compressor.

  • Page 328: Lc" Outdoor Unit

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.40 “ ” Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board Remote Controller Display Applicable REYQ8P~48P Models Method of Check the communication state between inverter PC board and control PC board by micro- computer.
  • Page 329 Troubleshooting by Indication on the Remote Controller SiBE37-701 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Does the Was the PC board model setting of the Make correct model setting. (A1P) replaced with a spare substitute PC board match the (For setting procedure, refer to...
  • Page 330 SiBE37-701 Troubleshooting by Indication on the Remote Controller Troubleshooting The fuse Replace the noise F400U of the A3P has been filter of the A3P. molten down. Disconnect the sensor connector (X2A or X4A) from the fan motor, and then turn ON the power supply. Is any malfunction code Take countermeasures...

  • Page 331: Inverter Over-Ripple Protection

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.41 “ ” Outdoor Unit: Inverter Over-Ripple Protection Remote Controller Display Applicable REYQ8P~48P Models Method of Imbalance in supply voltage is detected in PC board. Imbalance in the power supply voltage causes increased ripple of voltage of the main circuit Malfunction capacitor in the inverter.
  • Page 332 Be sure to explain to the user that Give the user a copy of "notification of inspection results"and leave there is a "power supply imbalance" it up to him to improve the imbalance. for which DAIKIN is not responsible. (V2816) Troubleshooting...

  • Page 333: P4" Outdoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.42 “ ” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor Remote Controller Display Applicable REYQ8P~48P Models Method of Resistance of radiation fin thermistor is detected when the compressor is not operating. Malfunction Detection Malfunction...
  • Page 334 SiBE37-701 Troubleshooting by Indication on the Remote Controller Inverter PC board for compressor ∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P437. Troubleshooting...

  • Page 335: Pj" Outdoor Unit: Faulty Field Setting After Replacing Main Pc Board Or Faulty Combination Of Pc Board

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.43 “ ” Outdoor Unit: Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board Remote Controller Display Applicable REYQ8P~48P Models Method of This malfunction is detected according to communications with the inverter. Malfunction Detection Malfunction...
  • Page 336 SiBE37-701 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. Was the PC board (A1P) replaced with a substitute PC board? Is the model setting of the Make correct setting of substitute PC board...

  • Page 337: U0" Outdoor Unit: Gas Shortage Alert

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.44 “ ” Outdoor Unit: Gas Shortage Alert Remote Controller Display Applicable REYQ8P~48P Models Method of Detect gas shortage based on the temperature difference between low pressure or suction pipe and heat exchanger. Malfunction Detection Malfunction...
  • Page 338 SiBE37-701 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. In cooling mode Set up a pressure gauge at the service port on the low pressure side.

  • Page 339: Reverse Phase, Open Phase

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.45 “ ” Reverse Phase, Open Phase Remote Controller Display Applicable REYQ8P~48P Models Method of The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged. Malfunction Detection Malfunction...

  • Page 340: U2" Outdoor Unit

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.46 “ ” Outdoor Unit: Power Supply Insufficient or Instantaneous Failure Remote Controller Display Applicable REYQ8P~48P Models Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Detection Malfunction...
  • Page 341 Troubleshooting by Indication on the Remote Controller SiBE37-701 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check for power supply voltage. Voltage between phases: On-site causes. 380 to 415V Phase Make proper wire connections voltage: 220 without open phase, erroneous...
  • Page 342 SiBE37-701 Troubleshooting by Indication on the Remote Controller Troubleshooting <Single> <Multi> Check for connector connections: Remove Check for connector connections: Remove and insert the connectors shown below. and insert the connectors shown below. Furthermore, check the connectors for Furthermore, check the connectors for terminal conditions and continuity.

  • Page 343: U3" Outdoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE37-701 “ ” Outdoor Unit: 3.47 Check Operation not Executed Remote Controller Display Applicable REYQ8P~48P 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 344: Malfunction Of Transmission Between Indoor Units

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.48 “ ” Malfunction of Transmission between Indoor Units Remote Controller Display Applicable All model of indoor unit REYQ8P~48P Models Method of Check if the transmission between indoor unit and outdoor unit is correctly executed using microcomputer.
  • Page 345 Troubleshooting by Indication on the Remote Controller SiBE37-701 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check the detailed malfunction status in the monitor mode. (Refer to P250~251 for how to check.) In Check 4, LED lamp indicates...
  • Page 346 SiBE37-701 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. Continued from the previous page In Check 4, LED lamp indicates as follows: Start operation of all the indoor units.

  • Page 347: Remote Controller And Indoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.49 “ ” Indoor Unit: Malfunction of Transmission between Remote Controller and Indoor Unit Remote Controller Display Applicable All models of indoor units 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 348: Outdoor Unit: Transmission Failure (Across Outdoor Units)

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.50 “ ” Outdoor Unit: Transmission Failure (Across Outdoor Units) Remote Controller Display Applicable All models of outdoor units Models Method of Microcomputer checks if transmission between outdoor units. Malfunction Detection Malfunction When transmission is not carried out normally for a certain amount of time Decision Conditions...
  • Page 349 Troubleshooting by Indication on the Remote Controller SiBE37-701 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check the LED lamps for “Check 3” corresponding to the malfunction code “U7”...
  • Page 350 SiBE37-701 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. Diagnosis Flow 1 Check 3 Check 4 Check if any disconnection or connection error is detected in Correct the connecting wiring connecting wires with...
  • Page 351 Troubleshooting by Indication on the Remote Controller SiBE37-701 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 2 Check 3 Check 4 Switch cooling/heating in Set the cooling/heating switch of a lump.
  • Page 352 SiBE37-701 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. Diagnosis Flow 3 Check 3 Check 4 Check the connection status of connecting wires of Multi Slave 1 Correct the connecting wires of the with outdoor multi.
  • Page 353 Troubleshooting by Indication on the Remote Controller SiBE37-701 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 6 Check 3 Check 4 Are manual address settings (of the slave Correct the manual address units 1 and 2) correct in order to settings.

  • Page 354: Sub Remote Controllers

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.51 “ ” Indoor Unit: Malfunction of Transmission between Main and Sub Remote Controllers Remote Controller Display Applicable All models of indoor units 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 355: U9" Indoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.52 “ ” Indoor Unit: Malfunction of Transmission between Indoor and Outdoor Units in the Same System Remote Controller Display Applicable All models of indoor units REYQ8P~48P Models Method of Detect malfunction signal for the other indoor units within the circuit by outdoor unit PC board. Malfunction Detection Malfunction...

  • Page 356: Improper Combination Of Indoor And Outdoor Units, Indoor Units And Remote Controller

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.53 “ ” Improper Combination of Indoor and Outdoor Units, Indoor Units and Remote Controller Remote Controller Display Applicable All models of indoor unit REYQ8P~48P Models Method of A difference occurs in data by the type of refrigerant between indoor and outdoor units. The number of indoor units is out of the allowable range.
  • Page 357 Troubleshooting by Indication on the Remote Controller SiBE37-701 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check the LED lamps for “Check 3” corresponding to the malfunction code “ ”...
  • Page 358 SiBE37-701 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. Diagnosis Flow 1 Check 3 Check 4 The number of indoor units connected to the same refrigerant circurt system Replace the main PC board of should not be more than...
  • Page 359 Troubleshooting by Indication on the Remote Controller SiBE37-701 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 3 Check 3 Check 4 Check Check if the outdoor if the unit is not unit PC board is replaced connected to outdoor...
  • Page 360 SiBE37-701 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. Diagnosis Flow 5 Check 3 Check 4 Is the model BSVQ-P Connect the model BSVQ-P. connected? Replace the outdoor unit PC board as shown below.
  • Page 361 Troubleshooting by Indication on the Remote Controller SiBE37-701 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 7 Check 3 Check 4 Is the wiring between Correct the connection wiring. the BS units correct? Replace the BS unit PC board concerned.

  • Page 362: Uc" Address Duplication Of Centralized Controller

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.54 “ ” Address Duplication of Centralized Controller Remote Controller Display Applicable All models of indoor unit Centralized controller Models Method of The principal indoor unit detects the same address as that of its own on any other indoor unit. Malfunction Detection Malfunction...

  • Page 363: Malfunction Of Transmission Between Centralized Controller And Indoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.55 “ ” Malfunction of Transmission between Centralized Controller and Indoor Unit Remote Controller Display Applicable All models of indoor units Intelligent Touch Controller Centralized controller Models Schedule timer Method of Microcomputer checks if transmission between indoor unit and centralized controller is normal. Malfunction Detection Malfunction...
  • Page 364 SiBE37-701 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 the indoor unit for which “UE” is displayed. Is the the transmission Continued to A malfunction (UE) (on the following...
  • Page 365 Troubleshooting by Indication on the Remote Controller SiBE37-701 Troubleshooting Check the transmission wiring between central equipment for any broken Abnormal wire. For details, refer to Correct the wiring. information in the “Procedure for checking broken wires” section. (Refer to P372) Normal Check the transmission...

  • Page 366: Uf" System Is Not Set Yet

    SiBE37-701 Troubleshooting by Indication on the Remote Controller 3.56 “ ” System is not Set yet Remote Controller Display Applicable All models of indoor units REYQ8P~48P 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 367: Uh" Malfunction Of System, Refrigerant System Address Undefined

    Troubleshooting by Indication on the Remote Controller SiBE37-701 3.57 “ ” Malfunction of System, Refrigerant System Address Undefined Remote Controller Display Applicable All models of indoor units REYQ8P~48P Models Method of Detect an indoor unit with no address setting. Malfunction Detection Malfunction The malfunction decision is made as soon as the abnormality aforementioned is detected.
  • Page 368 SiBE37-701 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. Does electricity a malfunction being introduce for occur even after 12 the first time after minutes elapses from the Normal installation or after an indoor...

  • Page 369: Troubleshooting (Op: Central Remote Controller)

    Troubleshooting (OP: Central Remote Controller) SiBE37-701 Troubleshooting (OP: Central Remote Controller) “ ” PC Board Defect Remote Controller Display Applicable Central remote controller Intelligent Touch Controller Schedule timer Models Method of Detect an abnormality in the DIII-NET polarity circuit. Malfunction Detection Malfunction When + polarity and - polarity are detected at the same time.

  • Page 370: Malfunction Of Transmission Between Optional Controllers For Centralized Control

    SiBE37-701 Troubleshooting (OP: Central Remote Controller) “ ” Malfunction of Transmission between Optional Controllers for Centralized Control Remote Controller Display Applicable Central remote controller Intelligent Touch Controller Schedule timer Models Method of Detect the malfunction according to DIII-NET transmission data. (The system will be automatically reset.) Malfunction Detection...

  • Page 371: Improper Combination Of Optional Controllerslers For Centralized Controllers

    Troubleshooting (OP: Central Remote Controller) SiBE37-701 “ ” Improper Combination of Optional Controllers for Centralized Control Remote Controller Display Applicable Central remote controller Intelligent touch controller Schedule timer Models Method of Detect the malfunction according to DIII-NET transmission data. Malfunction Detection Malfunction When the schedule timer is set to individual use mode, other central component is present.
  • Page 372 SiBE37-701 Troubleshooting (OP: Central Remote Controller) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Not available for combined Has the use with the remote control remote control adapter adapter.

  • Page 373: Mc" Address Duplication, Improper Setting

    Troubleshooting (OP: Central Remote Controller) SiBE37-701 “ ” Address Duplication, Improper Setting Remote Controller Display Applicable Central remote controller Intelligent Touch Controller Schedule timer Models Method of Detect the malfunction according to DIII-NET transmission data. Malfunction Detection Malfunction Two or more units of central remote controllers and Intelligent Touch Controllers are connected, and all of them are set to master unit central setting or slave unit central setting.

  • Page 374: Troubleshooting (Op: Unified On/Off Controller)

    SiBE37-701 Troubleshooting (OP: Unified ON/OFF Controller) Troubleshooting (OP: Unified ON/OFF Controller) Operation Lamp Blinks Remote Operation lamp blinks Controller Display Applicable All model of indoor units Models Unified ON/OFF controller Method of Detect the malfunction according to DIII-NET transmission data. Malfunction Detection Malfunction...
  • Page 375 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701 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 376: Display "Under Centralized Control" Blinks (Repeats Single Blink)

    SiBE37-701 Troubleshooting (OP: Unified ON/OFF Controller) Display “Under Centralized Control” Blinks (Repeats Single Blink) Remote “under centralized control” (Repeats single blink) Controller Display Applicable Unified ON/OFF controller Central remote controller, Schedule timer Models Method of Detect the malfunction according to DIII-NET transmission data. Malfunction Detection Malfunction...
  • Page 377 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701 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 its address controllers for centralized...
  • Page 378 SiBE37-701 Troubleshooting (OP: Unified ON/OFF Controller) 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 379: Display "Under Centralized Control" Blinks (Repeats Double Blink)

    Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701 Display “Under Centralized Control” Blinks (Repeats Double Blink) Remote “under centralized control” (Repeats double blink) Controller Display Applicable Unified ON/OFF controller Models Method of Detect the malfunction according to DIII-NET transmission data. Malfunction Detection Malfunction When no central control addresses are set to indoor units.
  • Page 380 SiBE37-701 Troubleshooting (OP: Unified ON/OFF Controller) [CHECK 1] Check on connector of fan motor (Power supply cable) (1) Turn off the power supply. Measure the resistance between phases of U,V,W at the motor side connectors (three-core wire) to check that the values are balanced and there is no short circuiting, while connector or relay connector is disconnected.
  • Page 381 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701 [CHECK 3] Check the Factors of Overheat Operation Identify the defective points referring to the failure factor analysis (FTA) as follows. Hot gas circuit clogging Faulty hot Defective solenoid ← Check if coil resistance and insulation gas bypass valve coil control...
  • Page 382 SiBE37-701 Troubleshooting (OP: Unified ON/OFF Controller) [CHECK 4] Power Transistor Check Perform the following procedures prior to check. (1) Power Off. (2) Remove all the wiring connected to the PC board where power transistors are mounted on. ∗ Preparing a tester in the analog system is recommended. [Preparation] A tester in the digital system with diode check function will ·...
  • Page 383 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701 [CHECK 5] 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 ←Conduct visual checks for pipe conditions.
  • Page 384 SiBE37-701 Troubleshooting (OP: Unified ON/OFF Controller) [CHECK 6] 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 385 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701 [CHECK 7] Broken Wire Check of the Connecting Wires 1. Procedure for checking outdoor-outdoor unit transmission wiring for broken wires On the system shown below, turn OFF the power supply to all equipment, short-circuit between the outdoor-outdoor unit terminal parts F1 and F2 in the "Outdoor Unit A"...
  • Page 386 SiBE37-701 Troubleshooting (OP: Unified ON/OFF Controller) [CHECK 8] Master Unit Central Connector Setting Table The master unit central setting connector (CN1/X1A) is mounted at the factory. • To independently use a single unit of the intelligent Touch controller or a single unit of the central remote controller, do not dismount the master unit central setting connector (i.e., use the connector with the factory setting unchanged).
  • Page 387 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701 [CHECK 9] Master-Slave Unit Setting Table Combination of Intelligent Touch Controller and Central Remote Controller Master Slave ∗ Pattern Master/ Master/ Master/ Master/ 1-00~4-15 5-00~8-15 1-00~4-15 5-00~8-15 Slave Slave Slave Slave Master Master Slave Slave Master —...
  • Page 388 SiBE37-701 Troubleshooting (OP: Unified ON/OFF Controller) [Check 10] Check for causes of wet operation. Referring to the Fault Tree Analysis (FTA) shown below, identify faulty points. Faulty crankcase heater Refrigerant accumulation Frequent ON/OFF of compressor ←Refer to information in the [Check 6] Overcharge of refrigerant section.
  • Page 389 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701 [Check 11] Check for overcharge of refrigerant. In case of VRV Systems, the only way to judge as the overcharge of refrigerant is with operating conditions due to the relationship to pressure control and electronic expansion valve control. As information for making a judgment, refer to information provided below.
  • Page 390 SiBE37-701 Troubleshooting (OP: Unified ON/OFF Controller) [Check 12] Check for shortage of refrigerant. In case of VRV Systems, the only way to judge as the shortage of refrigerant is with operating conditions due to the relationship to pressure control and electronic expansion valve control. As information for making a judgment, refer to information provided below.
  • Page 391 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701 [Check 13] Vacuuming and dehydration procedure Conduct vacuuming and dehydration in the piping system following the procedure for <Normal vacuuming and dehydration> described below. Furthermore, if moisture may get mixed in the piping system, follow the procedure for <Special vacuuming and dehydration>...
  • Page 392 SiBE37-701 Troubleshooting (OP: Unified ON/OFF Controller) [Check 14] List of inverter-related malfunction codes Code Name Condition for determining malfunction Major cause Instantaneous overcurrent of • Inverter output current exceeds 32.3A even • Liquid sealing inverter compressor instantaneously. • Faulty compressor •...
  • Page 393 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701 [Check 15] Concept of inverter-related malfunction codes Transmission error When transmissions between the main PC board and the inverter Main (Control) PC board PC board are not normal Instantaneous overcurrent of inverter compressor (When inverter output current exceeds 32.3A even instantaneously) Overcurrent of inverter compressor An overcurrent of 19.0A or more continues...

  • Page 394: Part 7 Appendix

    SiBE37-701 Part 7 Appendix 1. Piping Diagrams..................384 1.1 Outdoor Unit ..................384 1.2 Indoor Unit....................389 1.3 BS Unit ....................394 2. Wiring Diagrams for Reference............395 2.1 Outdoor Unit ..................395 2.2 Field Wiring ..................400 2.3 Indoor Unit....................403 2.4 BS Unit ....................417 3. List of Electrical and Functional Parts ..........418 3.1 Outdoor Unit ..................418 3.2 Indoor Side ...................422 4.

  • Page 395: Piping Diagrams

    Piping Diagrams SiBE37-701 1. Piping Diagrams Outdoor Unit REYQ8P / 10P / 12P Appendix...
  • Page 396 SiBE37-701 Piping Diagrams REYQ14P / 16P Appendix...
  • Page 397 Piping Diagrams SiBE37-701 REMQ8P 3D057743 Appendix...
  • Page 398 SiBE37-701 Piping Diagrams REMQ10P, 12P 3D057742 Appendix...
  • Page 399 Piping Diagrams SiBE37-701 REMQ14P, 16P 3D057741 Appendix...

  • Page 400: Indoor Unit

    SiBE37-701 Piping Diagrams Indoor Unit FXFQ-P Appendix...
  • Page 401 Piping Diagrams SiBE37-701 FXZQ Refrigerant pipe connection port diameters (mm) Model Liquid φ12.7 φ6.4 FXZQ20M / 25M / 32M / 40M / 50M Appendix...
  • Page 402 SiBE37-701 Piping Diagrams FXCQ, FXDQ25/25-M, FXSQ Refrigerant pipe connection port diameters Model Liquid φ12.70 φ6.35 FXSQ20, 25, 32, 40, 50 φ15.90 φ9.52 FXSQ63, 80, 100, 125 φ12.70 φ6.35 FXCQ20, 25, 32, 40, 50 φ15.90 φ9.52 FXCQ63, 80, 125 φ12.70 φ6.35 FXDQ20, 25 C:3TW25515-1 C:3TW21175-1C...
  • Page 403 Piping Diagrams SiBE37-701 FXKQ-MA 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 Code Name Code Main function Used for gas superheated degree control while in Electronic expansion valve cooling operation or subcooled degree control while in heating operation.
  • Page 404 SiBE37-701 Piping Diagrams FXDQ-NA, P 4D043864J Refrigerant pipe connection port diameters (mm) Model Liquid FXDQ20NA, P / 25NA, P / 32NA, P / φ12.7 φ6.4 40NA / 50NAVE φ15.9 φ9.5 FXDQ63NAVE Appendix...

  • Page 405: Bs Unit

    Piping Diagrams SiBE37-701 BS Unit 4D057985A Appendix...

  • Page 406: Wiring Diagrams For Reference

    SiBE37-701 Wiring Diagrams for Reference 2. Wiring Diagrams for Reference Outdoor Unit REYQ8P / 10P / 12PY1B Appendix...
  • Page 407 Wiring Diagrams for Reference SiBE37-701 REYQ14P / 16PY1B Appendix...
  • Page 408 SiBE37-701 Wiring Diagrams for Reference REMQ8P7Y1B Appendix...
  • Page 409 Wiring Diagrams for Reference SiBE37-701 REMQ10P / 12P7Y1B Appendix...
  • Page 410 SiBE37-701 Wiring Diagrams for Reference REMQ14P / 16P7Y1B Appendix...

  • Page 411: Field Wiring

    Wiring Diagrams for Reference SiBE37-701 Field Wiring REYQ8P / 10P / 12P / 14P / 16PY1B Appendix...
  • Page 412 SiBE37-701 Wiring Diagrams for Reference REYQ18P / 20P / 22P / 24P / 26P / 28P / 30P / 32P7Y1B Appendix...
  • Page 413 Wiring Diagrams for Reference SiBE37-701 REYQ34P / 36P / 38P / 40P / 42P / 44P / 46P / 48P7Y1B Appendix...

  • Page 414: Indoor Unit

    SiBE37-701 Wiring Diagrams for Reference Indoor Unit FXFQ20P / 25P / 32P / 40P / 50P / 63P / 80P / 100P / 125PVEB Appendix...
  • Page 415 Wiring Diagrams for Reference SiBE37-701 FXZQ20M / 25M / 32M / 40M / 50MV1 Appendix...
  • Page 416 SiBE37-701 Wiring Diagrams for Reference FXCQ20M / 25M / 32M / 63MV3 Appendix...
  • Page 417 Wiring Diagrams for Reference SiBE37-701 FXCQ40M / 50M / 80M / 125MV3 Appendix...
  • Page 418 SiBE37-701 Wiring Diagrams for Reference FXKQ25MA / 32MA / 40MA / 63MAVE Appendix...
  • Page 419 Wiring Diagrams for Reference SiBE37-701 FXDQ20P / 25P / 32P FXDQ20NA / 25NA / 32NA / 40NA / 50NA / 63NAVE (with Drain Pump) Appendix...
  • Page 420 SiBE37-701 Wiring Diagrams for Reference FXDQ20M / 25MV3 Appendix...
  • Page 421 Wiring Diagrams for Reference SiBE37-701 FXSQ20M / 25M / 32M / 40M / 50M / 63MV3 Appendix...
  • Page 422 SiBE37-701 Wiring Diagrams for Reference FXSQ80M / 100M / 125MV3 Appendix...
  • Page 423 Wiring Diagrams for Reference SiBE37-701 FXMQ40MA / 50MA / 63MA / 80MA / 100MA / 125MAVE Appendix...
  • Page 424 SiBE37-701 Wiring Diagrams for Reference FXMQ200MA / 250MAVE Appendix...
  • Page 425 Wiring Diagrams for Reference SiBE37-701 FXHQ32MA / 63MA / 100MAVE Appendix...
  • Page 426 SiBE37-701 Wiring Diagrams for Reference FXAQ20MA / 25MA / 32MAVE / 40MA / 50MA / 63MAVE Appendix...
  • Page 427 Wiring Diagrams for Reference SiBE37-701 FXLQ20MA / 25MA / 32MA / 40MA / 50MA / 63MAVE FXNQ20MA / 25MA / 32MA / 40MA / 50MA / 63MAVE Appendix...

  • Page 428: Bs Unit

    SiBE37-701 Wiring Diagrams for Reference BS Unit Appendix...

  • Page 429: List Of Electrical And Functional Parts

    List of Electrical and Functional Parts SiBE37-701 List of Electrical and Functional Parts Outdoor Unit 3.1.1 REYQ8PY1~12PY1 Model Item Name Symbol REYQ8PY1 REYQ10PY1 REYQ12PY1 Type JT1GCVDKYR@SA Inverter OC protection 14.7A device Type JT170G-KYE@T Compressor STD 1 OC protection 15.0A device Type STD 2 —...
  • Page 430 SiBE37-701 List of Electrical and Functional Parts 3.1.2 REYQ14PY1~16PY1 Model Item Name Symbol REYQ14PY1 REYQ16PY1 Type JT1GCVDKYR@SA Inverter OC protection 14.7A device Type JT170G-KYE@T Compressor STD 1 OC protection 15.0A device Type JT170G-KYE@T STD 2 OC protection 15.0A device OC protection Fan motor M1F, M2F 1.2A...
  • Page 431 List of Electrical and Functional Parts SiBE37-701 3.1.3 REMQ8PY1~12PY1 Model Item Name Symbol REMQ8PY1 REMQ10PY1 REMQ12PY1 Type JT1GCVDKYR@SA Inverter OC protection 14.7A device Type — JT170G-KYE@T Compressor STD 1 OC protection — 15.0A device Type — — STD 2 OC protection —...
  • Page 432 SiBE37-701 List of Electrical and Functional Parts 3.1.4 REMQ14PY1~16PY1 Model Item Name Symbol REMQ14PY1 REMQ16PY1 Type JT1GCVDKYR@SA Inverter OC protection 14.7A device Type JT170G-KYE@T Compressor STD 1 OC protection 15.0A device Type JT170G-KYE@T STD 2 OC protection 15.0A device OC protection Fan motor M1F, M2F 1.2A...

  • Page 433: Indoor Side

    List of Electrical and Functional Parts SiBE37-701 Indoor Side 3.2.1 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)
  • Page 434 SiBE37-701 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 435 List of Electrical and Functional Parts SiBE37-701 Model FXDQ FXDQ FXDQ Parts Name Symbol Remark FXDQ FXDQ FXDQ 20NAVE, 25NAVE, 32NAVE, 40NAVE 50NAVE 63NAVE Wired Remote BRC1D52 Controller Remote Option Controller Wireless Remote BRC4C62 Controller AC 220~240V 50Hz 1φ62W 1φ130W Fan Motor Thermal protector Motors...
  • Page 436 SiBE37-701 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 437 List of Electrical and Functional Parts SiBE37-701 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 438 SiBE37-701 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 439: Option List

    Option List SiBE37-701 Option List Option List of Controllers Operation Control System Optional Accessories Type FXDQ-P FXMQ- FXLQ-MA FXCQ-M FXFQ-P FXZQ-M FXKQ-MA FXDQ-NA FXSQ-M FXDQ-M FXHQ-MA FXAQ-MA Item FXNQ-MA Wireless H/R BRC7C62 BRC7F532F BRC7E530 BRC4C61 BRC4C62 BRC4C62 BRC4C62 BRC4C62 BRC7E63 BRC7E618 BRC4C62 Remote controller Wired...
  • Page 440 SiBE37-701 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 441: Option Lists (Outdoor Unit)

    Option List SiBE37-701 Option Lists (Outdoor Unit) REYQ8 ~ 16PY1 Series VRV III H/R REYQ10PY1 REYQ12PY1 REYQ8PY1 Models REYQ14PY1 Optional accessories REYQ16PY1 KHRP25M33H KHRP25M33H, KHRP25M72H Refnet header Model (Max. 8 branch) (Max. 8 branch) (Max. 8 branch) KHRP25A22T, KHRP25A33T Refnet joint Model KHRP25A22T, KHRP25A33T (KHRP25A72T+KHRP25M72TP)

  • Page 442: Piping Installation Point

    SiBE37-701 Piping Installation Point Piping Installation Point Piping Installation Point 5m or less than 5m Maximum length from a connection Connection Connection kit. 10m or less from first branch. Kit A Kit B (Equivalent Piping Length 13m) Since there is a possibility that oil may be collected on a stop machine side, install piping between outdoor units to go to level or go up to an outdoor unit, and to make a slope.

  • Page 443: The Example Of A Wrong Pattern

    Piping Installation Point SiBE37-701 The Example of a Wrong Pattern Wrong × Oil is collected to the outdoor unit at the time of a stop, because of bottom omission of piping. (V3039) Wrong × Oil is collected to the low level outdoor unit at the time of a stop, because of downward slope of piping.

  • Page 444: Example Of Connection

    SiBE37-701 Example of connection 6. Example of connection Branch with REFNET joint Branch with REFNET joint and header Branch with REFNET header Example of connection (Connection of 8 indoor units) Outdoor unit Outdoor unit Outdoor unit REFNET joint (A, B) Outdoor Indoor REFNET header...
  • Page 445 Example of connection SiBE37-701 How to select the REFNET joint How to select the REFNET header Outdoor unit multi connection piping kit and Refrigerant branch kit selection When using REFNET joint at the first branch counted from the outdoor unit side, Choose from the following table in accordance with the total capacity index of all choose from the following table in accordance with the outdoor unit capacity type.
  • Page 446 SiBE37-701 Example of connection How to calculate the REFRIGERANT AMOUNT HEAT RECOVER SYSTEM additional refrigerant Total length(m) Total length(m) FOR EXCEEDING CONNECTION MODEL NAME THE AMOUNT OF REFRIGERANT 0.37 0.26 of liquid piping of liquid piping to be charged CAPACITY OF INDOOR UNIT size at φ22.2 size at φ19.1 REYQ8 ~ 16PY1...
  • Page 447 Example of connection SiBE37-701 Appendix...

  • Page 448: Thermistor Resistance / Temperature Characteristics

    SiBE37-701 Thermistor Resistance / Temperature Characteristics Thermistor Resistance / Temperature Characteristics Indoor unit For air suction For liquid pipe For gas pipe Outdoor unit for fin thermistor R1T Outdoor unit For outdoor air For coil For suction pipe For Receiver gas pipe For Receiver outlet liquid pipe (kΩ) TºC...
  • Page 449 Thermistor Resistance / Temperature Characteristics SiBE37-701 Outdoor Unit Thermistors for Discharge Pipe ∼ (R3T, R31 33T) (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...

  • Page 450: Pressure Sensor

    SiBE37-701 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 451: Method Of Checking The Inverter's Power Transistors And Diode Modules

    Method of Checking the Inverter’s Power Transistors and Diode Modules SiBE37-701 Method of Checking the Inverter’s Power Transistors and Diode Modules Method of Checking the Inverter’s Power Transistors and Diode 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 452: Mode

    SiBE37-701 Method of Checking the Inverter’s Power Transistors and Diode Modules 1. Power module checking When using the analog type of multiple When using the digital type of multiple tester, make measurement in resistance tester, make measurement in diode check Ω...
  • Page 453 Method of Checking the Inverter’s Power Transistors and Diode Modules SiBE37-701 Appendix...

  • Page 454: Part 8 Precautions For New Refrigerant (R-410A)

    SiBE37-701 Part 8 Precautions for New Refrigerant (R-410A) 1. Precautions for New Refrigerant (R-410A) .........444 1.1 Outline ....................444 1.2 Refrigerant Cylinders................446 1.3 Service Tools..................447 Precautions for New Refrigerant (R-410A)

  • Page 455: Precautions For New Refrigerant (R-410A)

    Precautions for New Refrigerant (R-410A) SiBE37-701 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 456 SiBE37-701 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 457: Refrigerant Cylinders

    Precautions for New Refrigerant (R-410A) SiBE37-701 Refrigerant Cylinders Cylinder specifications • The cylinder is painted refrigerant color (pink). • 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 458: Service Tools

    SiBE37-701 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 459 Precautions for New Refrigerant (R-410A) SiBE37-701 1. Flaring tool Flare gauge Specifications • 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 • Change of dimension A Dimension A For class-1: R-407C For class-2: R-410A...
  • Page 460 SiBE37-701 Precautions for New Refrigerant (R-410A) 2. Torque wrench Specifications • Dimension B Unit:mm Nominal size Class-1 Class-2 Previous No change in tightening torque No change in pipes of other sizes Differences • Change of dimension B Only 1/2", 5/8" are extended For class-1: R-407C For class-2: R-410A Dimension B...
  • Page 461 Precautions for New Refrigerant (R-410A) SiBE37-701 4. Leak tester Specifications • Hydrogen detecting type, etc. • Applicable refrigerants R-410A, R-407C, R-404A, R-507A, R-134a, etc. Differences • Previous testers detected chlorine. Since HFCs do not contain chlorine, new tester detects hydrogen. 5.
  • Page 462 SiBE37-701 Precautions for New Refrigerant (R-410A) • Temperature scale indicates the relationship between pressure and temperature in gas saturated state. Differences • Change in pressure • Change in service port diameter 7. Charge hose for R-410A (Hose with ball valve) Specifications •...
  • Page 463 Precautions for New Refrigerant (R-410A) SiBE37-701 9. Weigher for refrigerant charge Specifications • High accuracy TA101A (for 10-kg cylinder) = ± 2g TA101B (for 20-kg cylinder) = ± 5g • Equipped with pressure-resistant sight glass to check liquid refrigerant charging. •...

  • Page 464: Index

    SiBE37-701 Index Detailed Explanation of Setting Modes ....194 Display “Under Centralized Control” Blinks A0 .................252 (Repeats Double Blink) ........ 368 A1 .................253 Display “Under Centralized Control” Blinks A3 .................254 (Repeats Single Blink) ........365 A6 ............256, 258, 259 Drain Level above Limit ........266 A7 .................260 A9 ..............262, 264 Abnormal Discharge Pipe Temperature ....285...
  • Page 465 SiBE37-701 J6 .................297 Malfunction of Thermistor (R2T) for J7 .................298 Heat Exchanger ........... 268 J9 .................300 Malfunction of Thermistor (R3T) for JA .................301 Gas Pipes ............. 269 JC .................303 Malfunction of Thermistor (R4T or R12T) for Outdoor Unit Heat Exchanger ...... 297 Malfunction of Thermistor (R8T or R10T) for L1 .................305 Suction Pipe ..........
  • Page 466 SiBE37-701 REMQ8P (Multi 8HP) ........60 REYQ14P, 16P ..........58 REYQ8P, 10P, 12P .........56 Refrigerant Flow for Each Operation Mode ....73 REYQ14P, 16P ..........81 REYQ18P, 20P ..........89 REYQ8P, 10P, 12P .........73 Refrigerant Overcharged ........287 Reverse Phase, Open Phase .......328 Set Model Display (LED) ........188 Setting at Replacement by Spare PC Board ..204 Setting by Push Button Switches ......208 Setting Mode 1 .............210...
  • Page 467 SiBE37-701 Index...

  • Page 468: Drawings & Flow Charts

    SiBE37-701 Drawings & Flow Charts Discharge Pipe Protection Control ...... 134 Display “Under Centralized Control” Blinks Abnormal Discharge Pipe Temperature ....285 (Repeats Double Blink) ........ 368 Abnormal Outdoor Fan Motor Signal ....290 Display “Under Centralized Control” Blinks Actuation of High Pressure Switch .......273 (Repeats Single Blink) .........
  • Page 469 SiBE37-701 Improper Combination of Optional Controllers for Malfunction of Transmission between Centralized Centralized Control ........360 Controller and Indoor Unit ......352 Inspection Mode ...........242 Malfunction of Transmission between Indoor and Inverter Compressor Motor Lock ......277 Outdoor Units in the Same System ....344 Inverter Compressor Starting Failure ....314 Malfunction of Transmission between Inverter Over-Ripple Protection ......320...
  • Page 470 SiBE37-701 REYQ14P, 16P ..........81 REYQ8P, 10P, 12P .........73 Refrigerant Overcharged ........287 Remote Controller Self-Diagnosis Function ..245 Remote Controller Service Mode ......243 Reverse Phase, Open Phase ......328 Self-diagnosis by Wired Remote Controller ..238 Self-diagnosis by Wireless Remote Controller ............239 Setting by Push Button Switches ......208 Setting Mode 1 .............210 Setting Mode 2 .............211 Setting of Low Noise Operation and Demand...
  • Page 471 SiBE37-701 viii Drawings & Flow Charts...
  • Page 472 Daikin Industries, Ltd.’s products are manufactured for export to numerous countries throughout the Warning world. Daikin Industries, Ltd. does not have control over which products are exported to and used in a particular country. Prior to purchase, please therefore confirm with your local authorised importer, distributor and/or retailer whether this product conforms to the applicable standards, and is suitable for use, in the region where the product will be used.

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