Daikin VRV III RXYQ5-54PY1 Service Manual
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Daikin VRV III RXYQ5-54PY1 Service Manual

R-410a heat pump 50hz
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Si34 - 601A
RXYQ5-54PY1
R-410A Heat Pump 50Hz

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Summary of Contents for Daikin VRV III RXYQ5-54PY1

  • Page 1 Si34 - 601A RXYQ5-54PY1 R-410A Heat Pump 50Hz...

  • Page 2: Table Of Contents

    Si34-601A R-410A Heat Pump 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 Si34-601A Special Control..................109 Startup Control ..................109 3.2 Large capacity start up control (Heating) ..........110 Oil Return Operation ................111 Defrosting Operation ................113 Pump-down Residual Operation ............114 3.6 Standby ....................115 Stopping Operation ................116 Protection Control ................118 High Pressure Protection Control............118 Low Pressure Protection Control............119 Discharge Pipe Protection Control ............120 Inverter Protection Control ..............121 STD Compressor Overload Protection..........122...
  • Page 4 Si34-601A 2.4 Operation of The Remote Controller’s Inspection / Test Operation Button ................209 2.5 Remote Controller Service Mode ............210 2.6 Remote Controller Self-Diagnosis Function .........212 3. Troubleshooting by Indication on the Remote Controller ....220 3.1 “A0” Indoor Unit: Error of External Protection Device ......220 3.2 “A1”...
  • Page 5 Si34-601A 3.38 “P4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor.........272 3.39 “PJ” Outdoor Unit: Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board............274 3.40 “UO” Outdoor Unit: Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure..........275 3.41 “U1”...
  • Page 6 Si34-601A 4.2 Option Lists (Outdoor Unit)..............359 Piping Installation Point...............361 5.1 Piping Installation Point ................361 The Example of A Wrong Pattern............362 6. Example of connection (R-410A Type) ..........363 Thermistor Resistance / Temperature Characteristics......365 Pressure Sensor .................367 Method of Checking The Inverter’s Power Transistors and Diode Modules ................368 Part 8 Precautions for New Refrigerant (R-410A) ....

  • Page 7: Introduction

    Introduction Si34-601A 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 Si34-601A 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 Si34-601A 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 Si34-601A 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 2006 VRVIII series Heat Pump System. Daikin offers a wide range of models to respond to building and office air conditioning needs. We are confident that customers will be able to find the models that best suit their needs.

  • Page 12: Part 1 General Information

    Si34-601A 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..................7 General Information...

  • Page 13: Model Names Of Indoor/Outdoor Units

    Model Names of Indoor/Outdoor Units Si34-601A 1. Model Names of Indoor/Outdoor Units Indoor Units Type Model Name Power Supply Ceiling Mounted FXCQ — 125M — — Cassette Type (Double Flow) Ceiling Mounted FXFQ — 100M 125M — — Cassette Type (Multi Flow) 600×600 Ceiling FXZQ...

  • Page 14: External Appearance

    Si34-601A External Appearance 2. External Appearance Indoor Units Ceiling Mounted Cassette Type (Double Flow) Outdoor air processing unit FXCQ20M FXCQ25M FXMQ125MF FXCQ32M FXMQ200MF FXCQ40M FXMQ250MF FXCQ50M FXCQ63M FXCQ80M FXCQ125M Ceiling Mounted Cassette Ceiling Suspended Type Type (Multi Flow) FXHQ32MA FXHQ63MA FXFQ25M FXHQ100MA FXFQ32M...

  • Page 15: Outdoor Units

    External Appearance Si34-601A Outdoor Units RXYQ5P RXYQ8P, 10P (12P: EUROPE) RXYQ12P, 14P, 16P, 18P 8, 10HP 12, 14, 16, 18HP RXYQ20P, 22P, 24P, 26P, 28P RXYQ30P, 32P, 34P, 36P 20, 22, 24, 26, 28HP 30, 32, 34, 36HP RXYQ38P, 40P, 42P, 44P, 46P RXYQ48P, 50P, 52P, 54P 38, 40, 42, 44, 46HP 48, 50, 52, 54HP...

  • Page 16: Combination Of Outdoor Units

    44HP ● ●● 46HP Heat Pump: BHFP22P151 ● ●● 48HP ● ●● 50HP ● ●● 52HP ●●● 54HP Note: For multiple connection of 18HP system or more, an optional Daikin Outdoor Unit Multi Connection Piping Kit is required. General Information...
  • Page 17 ●● ● 42HP ● ●● 44HP Heat Pump: BHFP22P151 ● ● ● 46HP ●●● 48HP ●● ● 50HP Note: For multiple connection of 16HP system or more, an optional Daikin Outdoor Unit Multi Connection Piping Kit is required. General Information...

  • Page 18: Model Selection

    Si34-601A Model Selection 4. Model Selection VRV III Heat Pump Series Connectable indoor units number and capacity Normal Series 10HP 12HP 14HP 16HP 18HP System name RXYQ5P RXYQ8P RXYQ10P RXYQ12P RXYQ14P RXYQ16P RXYQ18P Outdoor unit 1 RXYQ5P RXYQ8P RXYQ10P RXYQ12P RXYQ14P RXYQ16P RXYQ18P...
  • Page 19 Model Selection Si34-601A High COP Series (Energy Saving Series) 16HP 18HP System name RXYQ16PH RXYQ18PH Outdoor unit 1 RXYQ8P RXYQ8P Outdoor unit 2 RXYQ8P RXYQ10P Outdoor unit 3 – – Total number of connectable indoor units Total capacity of connectable 22.40~58.24 25.20~65.52 indoor units (kW)
  • Page 20 Si34-601A Model Selection Connectable Indoor Unit Type Model Name Power Supply Ceiling Mounted FXCQ — 125M — — Cassette Type (Double Flow) Ceiling Mounted FXFQ — 100M 125M — — Cassette Type (Multi Flow) 600×600 Ceiling Mounted Cassette FXZQ — —...
  • Page 21 Model Selection Si34-601A Differences from Conventional Models Differences Item Object New model (P Model) Conventional model (MA 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 22: Part 2 Specifications

    Si34-601A Part 2 Specifications Specifications ..................12 Outdoor Units ..................12 Indoor Units ....................33 Specifications...

  • Page 23: Specifications

    Specifications Si34-601A Specifications Outdoor Units Heat Pump 50Hz Standard Series <RXYQ-P> Model Name RXYQ5PY1(E) RXYQ8PY1(E) kcal / h 12,100 19,400 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 48,100 77,000 14.1 22.5 ★ 2 Cooling Capacity (19.0°CWB) 14.0 22.4 kcal / h 13,800 21,500 ★...
  • Page 24 Si34-601A Specifications Model Name RXYQ10PY1(E) RXYQ12PY1(E) kcal / h 24,300 29,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 96,200 115,000 28.2 33.7 ★ 2 Cooling Capacity (19.0°CWB) 28.0 33.5 kcal / h 27,100 32,300 ★ 3 Heating Capacity Btu / h 107,000 128,000 31.5...
  • Page 25 Specifications Si34-601A Model Name RXYQ14PY1(E) RXYQ16PY1(E) kcal / h 34,600 39,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 137,000 155,000 40.2 45.3 ★ 2 Cooling Capacity (19.0°CWB) 40.0 45.0 kcal / h 38,700 43,000 ★ 3 Heating Capacity Btu / h 154,000 171,000 45.0...
  • Page 26 Si34-601A Specifications Model Name (Combination Unit) RXYQ18PY1(E) RXYQ20PY1(E) — Model Name (Independent Unit) RXYQ8PY1(E)+RXYQ12PY1(E) kcal / h 42,000 48,300 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 168,000 192,000 49.3 56.2 ★ 2 Cooling Capacity (19.0°CWB) 55.9 kcal / h 48,600 53,800 ★...
  • Page 27 Specifications Si34-601A Model Name (Combination Unit) RXYQ22PY1(E) RXYQ24PY1(E) Model Name (Independent Unit) RXYQ10PY1(E)+RXYQ12PY1(E) RXYQ8PY1(E)+RXYQ16PY1(E) kcal / h 53,200 58,300 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 211,000 231,000 61.9 67.8 ★ 2 Cooling Capacity (19.0°CWB) 61.5 67.4 kcal / h 59,300 64,500 ★...
  • Page 28 Si34-601A Specifications Model Name (Combination Unit) RXYQ26PY1(E) RXYQ28PY1(E) Model Name (Independent Unit) RXYQ8PY1(E)+RXYQ18PY1(E) RXYQ10PY1(E)+RXYQ18PY1(E) kcal / h 61,700 66,700 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 250,000 26,400 71.8 77.5 ★ 2 Cooling Capacity (19.0°CWB) 71.4 77.0 kcal / h 70,100 75,700 ★...
  • Page 29 Specifications Si34-601A Model Name (Combination Unit) RXYQ30PY1(E) RXYQ32PY1(E) Model Name (Independent Unit) RXYQ12PY1(E)+RXYQ18PY1(E) RXYQ16PY1(E)+RXYQ16PY1(E) kcal / h 71,400 77,800 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 283,000 309,000 90.5 ★ 2 Cooling Capacity (19.0°CWB) 82.5 kcal / h 80,800 86,000 ★...
  • Page 30 Si34-601A Specifications Model Name (Combination Unit) RXYQ34PY1(E) RXYQ36PY1(E) Model Name (Independent Unit) RXYQ16PY1(E)+RXYQ18PY1(E) RXYQ18PY1(E)+RXYQ18PY1(E) kcal / h 81,400 85,100 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 323,000 338,000 94.6 ★ 2 Cooling Capacity (19.0°CWB) 94.0 kcal / h 92,000 97,200 ★...
  • Page 31 Specifications Si34-601A Model Name (Combination Unit) RXYQ38PY1(E) RXYQ40PY1(E) Model Name (Independent Unit) RXYQ8PY1(E)+RXYQ12PY1(E)+RXYQ18PY1(E) RXYQ8PY1(E)+RXYQ16PY1(E)+RXYQ16PY1(E) kcal / h 91,200 97,200 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 362,000 386,000 ★ 2 Cooling Capacity (19.0°CWB) kcal / h 102,000 108,000 ★ 3 Heating Capacity Btu / h 406,000...
  • Page 32 Si34-601A Specifications Model Name (Combination Unit) RXYQ42PY1(E) RXYQ44PY1(E) Model Name (Independent Unit) RXYQ8PY1(E)+RXYQ16PY1(E)+RXYQ18PY1(E) RXYQ8PY1(E)+RXYQ18PY1(E)+RXYQ18PY1(E) kcal / h 101,000 104,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 399,000 413,000 ★ 2 Cooling Capacity (19.0°CWB) kcal / h 114,000 119,000 ★ 3 Heating Capacity Btu / h 450,000...
  • Page 33 Specifications Si34-601A Model Name (Combination Unit) RXYQ46PY1(E) RXYQ48PY1(E) Model Name (Independent Unit) RXYQ10PY1(E)+RXYQ18PY1(E)+RXYQ18PY1(E) RXYQ12PY1(E)+RXYQ18PY1(E)+RXYQ18PY1(E) kcal / h 109,000 114,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 433,000 454,000 ★ 2 Cooling Capacity (19.0°CWB) kcal / h 124,000 130,000 ★ 3 Heating Capacity Btu / h 495,000...
  • Page 34 Si34-601A Specifications Model Name (Combination Unit) RXYQ50PY1(E) RXYQ52PY1(E) Model Name (Independent Unit) RXYQ14PY1(E)+RXYQ18PY1(E)+RXYQ18PY1(E) RXYQ16PY1(E)+RXYQ18PY1(E)+RXYQ18PY1(E) kcal / h 120,000 124,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 474,000 491,000 ★ 2 Cooling Capacity (19.0°CWB) kcal / h 136,000 140,000 ★ 3 Heating Capacity Btu / h 539,000...
  • Page 35 Specifications Si34-601A Model Name (Combination Unit) RXYQ54PY1(E) Model Name (Independent Unit) RXYQ18PY1(E)+RXYQ18PY1(E)+RXYQ18PY1(E) kcal / h 127,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 505,000 ★ 2 Cooling Capacity (19.0°CWB) kcal / h 146,000 ★ 3 Heating Capacity Btu / h 580,000 Casing Color Ivory White (5Y7.5/1)
  • Page 36 Si34-601A Specifications Heat Pump 50Hz High COP Series <RXYQ-PH> Model Name RXYQ16PHY1(E) RXYQ18PHY1(E) Model Name (Independent Unit) RXYQ8PY1(E)+RXYQ8PY1(E) RXYQ8PY1(E)+RXYQ10PY1(E) kcal / h 38,800 43,600 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 154,000 173,000 45.1 50.7 ★ 2 Cooling Capacity (19.0°CWB) 44.8 50.4 kcal / h...
  • Page 37 Specifications Si34-601A Model Name RXYQ24PHY1(E) RXYQ26PHY1(E) Model Name (Independent Unit) RXYQ8PY1(E)+RXYQ8PY1(E)+RXYQ8PY1(E) RXYQ8PY1(E)+RXYQ8PY1(E)+RXYQ10PY1(E) kcal / h 58,100 63,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 231,000 250,000 67.6 73.2 ★ 2 Cooling Capacity (19.0°CWB) 67.2 72.8 kcal / h 64,500 70,100 ★...
  • Page 38 Si34-601A Specifications Model Name RXYQ28PHY1(E) RXYQ30PHY1(E) Model Name (Independent Unit) RXYQ8PY1(E)+RXYQ8PY1(E)+RXYQ12PY1(E) RXYQ8PY1(E)+RXYQ10PY1(E)+RXYQ12PY1(E) kcal / h 67,800 72,600 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 269,000 288,000 78.8 84.4 ★ 2 Cooling Capacity (19.0°CWB) 78.3 83.9 kcal / h 75,300 80,800 ★...
  • Page 39 Specifications Si34-601A Model Name RXYQ32PHY1(E) RXYQ34PHY1(E) Model Name (Independent Unit) RXYQ8PY1(E)+RXYQ12PY1(E)+RXYQ12PY1(E) RXYQ10PY1(E)+RXYQ12PY1(E)+RXYQ12PY1(E) kcal / h 77,300 82,200 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 307,000 326,000 89.9 95.6 ★ 2 Cooling Capacity (19.0°CWB) 89.4 kcal / h 86,000 92,000 ★...
  • Page 40 Si34-601A Specifications Model Name RXYQ36PHY1(E) RXYQ38PHY1(E) Model Name (Independent Unit) RXYQ12PY1(E)+RXYQ12PY1(E)+RXYQ12PY1(E) RXYQ12PY1(E)+RXYQ12PY1(E)+RXYQ14PY1(E) kcal / h 87,700 92,900 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 348,000 368,000 ★ 2 Cooling Capacity (19.0°CWB) kcal / h 97,200 103,000 ★ 3 Heating Capacity Btu / h 386,000 409,000...
  • Page 41 Specifications Si34-601A Model Name RXYQ40PHY1(E) RXYQ42PHY1(E) Model Name (Independent Unit) RXYQ12PY1(E)+RXYQ12PY1(E)+RXYQ16PY1(E) RXYQ12PY1(E)+RXYQ12PY1(E)+RXYQ18PY1(E) kcal / h 97,200 101,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 386,000 399,000 ★ 2 Cooling Capacity (19.0°CWB) kcal / h 108,000 114,000 ★ 3 Heating Capacity Btu / h 427,000 450,000...
  • Page 42 Si34-601A Specifications Model Name RXYQ44PHY1(E) RXYQ46PHY1(E) Model Name (Independent Unit) RXYQ12PY1(E)+RXYQ16PY1(E)+RXYQ16PY1(E) RXYQ12PY1(E)+RXYQ16PY1(E)+RXYQ18PY1(E) kcal / h 108,000 111,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 427,000 440,000 ★ 2 Cooling Capacity (19.0°CWB) kcal / h 119,000 124,000 ★ 3 Heating Capacity Btu / h 471,000 491,000...
  • Page 43 Specifications Si34-601A Model Name RXYQ48PHY1(E) RXYQ50PHY1(E) Model Name (Independent Unit) RXYQ16PY1(E)+RXYQ16PY1(E)+RXYQ16PY1(E) RXYQ16PY1(E)+RXYQ16PY1(E)+RXYQ18PY1(E) kcal / h 117,000 120,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 464,000 478,000 ★ 2 Cooling Capacity (19.0°CWB) kcal / h 129,000 134,000 ★ 3 Heating Capacity Btu / h 512,000 532,000...

  • Page 44: Indoor Units

    Si34-601A Specifications Indoor Units Ceiling Mounted Cassette Type (Double Flow) Model FXCQ20MVE FXCQ25MVE FXCQ32MVE FXCQ40MVE kcal/h 2,000 2,500 3,200 4,000 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 7,800 9,900 12,600 16,000 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 4,300 ★...
  • Page 45 Specifications Si34-601A Ceiling Mounted Cassette Type (Double Flow) Model FXCQ50MVE FXCQ63MVE FXCQ80MVE FXCQ125MVE kcal/h 5,000 6,300 8,000 12,500 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 19,800 24,900 31,700 49,500 14.5 ★ 2 Cooling Capacity (19.0°CWB) 14.0 kcal/h 5,400 6,900 8,600 13,800 ★...
  • Page 46 Si34-601A Specifications Ceiling Mounted Cassette Type (Multi-flow) Model FXFQ25MVE FXFQ32MVE FXFQ40MVE FXFQ50MVE kcal/h 2,500 3,200 4,000 5,000 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 9,900 12,600 16,000 19,800 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 2,800 3,400 4,300 5,400 ★ 3 Heating Capacity Btu/h 10,900 13,600...
  • Page 47 Specifications Si34-601A Ceiling Mounted Cassette Type (Multi-flow) Model FXFQ63MVE FXFQ80MVE FXFQ100MVE FXFQ125MVE kcal/h 6,300 8,000 10,000 12,500 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 24,900 31,700 39,600 49,500 11.6 14.5 ★ 2 Cooling Capacity (19.0°CWB) 11.2 14.0 kcal/h 6,900 8,600 10,800 13,800 ★...
  • Page 48 Si34-601A Specifications 600×600 Ceiling Mounted Cassette Type (Multi Flow) Model FXZQ20M7V1B FXZQ25M7V1B FXZQ32M7V1B kcal/h 2,000 2,500 3,150 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 ★ 3 Heating Capacity Btu/h 8,500 10,900 13,600...
  • Page 49 Specifications Si34-601A 600×600 Ceiling Mounted Cassette Type (Multi Flow) Model FXZQ40M7V1B FXZQ50M7V1B kcal/h 4,000 5,000 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 ★ 3 Heating Capacity Btu/h 17,000 21,500 Casing Galvanized Steel Plate Galvanized Steel Plate Dimensions: (H×W×D) 260×575×575...
  • Page 50 Si34-601A Specifications Ceiling Mounted Cassette Corner Type Model FXKQ25MAVE FXKQ32MAVE FXKQ40MAVE FXKQ63MAVE kcal/h 2,500 3,200 4,000 6,300 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 9,900 12,600 16,000 24,900 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 2,800 3,400 4,300 6,900 ★ 3 Heating Capacity Btu/h 10,900 13,600...
  • Page 51 Specifications Si34-601A Slim Ceiling Mounted Duct Type (with Drain Pump) Model FXDQ20NAVE FXDQ25NAVE FXDQ32NAVE kcal/h 2,000 2,500 3,200 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 7,800 9,900 12,600 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 ★ 3 Heating Capacity Btu/h 8,500 10,900...
  • Page 52 Si34-601A Specifications Slim Ceiling Mounted Duct Type (with Drain Pump) Model FXDQ40NAVE FXDQ50NAVE FXDQ63NAVE kcal/h 4,000 5,000 6,300 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 16,000 19,800 24,900 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 ★ 3 Heating Capacity Btu/h 17,100 21,500...
  • Page 53 Specifications Si34-601A Slim Ceiling Mounted Duct Type (without Drain Pump) Model FXDQ20NVET FXDQ25NVET FXDQ32NVET kcal/h 2,000 2,500 3,200 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 7,800 9,900 12,600 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 ★ 3 Heating Capacity Btu/h 8,500 10,900...
  • Page 54 Si34-601A Specifications Slim Ceiling Mounted Duct Type (without Drain Pump) Model FXDQ40NVET FXDQ50NVET FXDQ63NVET kcal/h 4,000 5,000 6,300 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 16,000 19,800 24,900 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 ★ 3 Heating Capacity Btu/h 17,100 21,500...
  • Page 55 Specifications Si34-601A Slim Ceiling Mounted Duct Type (PVE: with Drain Pump PVET: without Drain Pump) FXDQ20PVE FXDQ25PVE FXDQ32PVE Model FXDQ20PVET FXDQ25PVET FXDQ32PVET kcal/h 2,000 2,500 3,200 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 7,800 9,900 12,600 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800...
  • Page 56 Si34-601A Specifications Ceiling Mounted Built-in Type Model FXSQ20MVE FXSQ25MVE FXSQ32MVE kcal/h 2,000 2,500 3,200 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 7,800 9,900 12,600 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 ★ 3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Galvanized Steel Plate Galvanized Steel Plate...
  • Page 57 Specifications Si34-601A Ceiling Mounted Built-in Type Model FXSQ40MVE FXSQ50MVE FXSQ63MVE kcal/h 4,000 5,000 6,300 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 16,000 19,800 24,900 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 ★ 3 Heating Capacity Btu/h 17,100 21,500 27,300 Casing Galvanized Steel Plate Galvanized Steel Plate...
  • Page 58 Si34-601A Specifications Ceiling Mounted Built-in Type Model FXSQ80MVE FXSQ100MVE FXSQ125MVE kcal/h 8,000 10,000 12,500 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 31,700 39,600 49,500 11.6 14.5 ★ 2 Cooling Capacity (19.0°CWB) 11.2 14.0 kcal/h 8,600 10,800 13,800 ★ 3 Heating Capacity Btu/h 34,100 42,700...
  • Page 59 Specifications Si34-601A Ceiling Mounted Duct Type Model FXMQ40MAVE FXMQ50MAVE FXMQ63MAVE FXMQ80MAVE kcal/h 4,000 5,000 6,300 8,000 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 16,000 19,800 24,900 31,700 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 8,600 ★ 3 Heating Capacity Btu/h 17,100 21,500...
  • Page 60 Si34-601A Specifications Ceiling Mounted Duct Type Model FXMQ100MAVE FXMQ125MAVE FXMQ200MAVE FXMQ250MAVE kcal/h 10,000 12,500 19,800 24,800 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 39,600 49,500 78,500 98,300 11.6 14.5 23.0 28.8 ★ 2 Cooling Capacity (19.0°CWB) 11.2 14.0 22.4 28.0 kcal/h 10,800 13,800 21,500...
  • Page 61 Specifications Si34-601A Ceiling Suspended Type Model FXHQ32MAVE FXHQ63MAVE FXHQ100MAVE kcal/h 3,200 6,300 10,000 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 12,600 24,900 39,600 11.6 ★ 2 Cooling Capacity (19.0°CWB) 11.2 kcal/h 3,400 6,900 10,800 ★ 3 Heating Capacity Btu/h 13,600 27,300 42,700 12.5 Casing Color...
  • Page 62 Si34-601A Specifications Wall Mounted Type Model FXAQ20MAVE FXAQ25MAVE FXAQ32MAVE kcal/h 2,000 2,500 3,200 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 7,800 9,900 12,600 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 ★ 3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color White (3.0Y8.5/10.5) White (3.0Y8.5/10.5) White (3.0Y8.5/10.5)
  • Page 63 Specifications Si34-601A Wall Mounted Type Model FXAQ40MAVE FXAQ50MAVE FXAQ63MAVE kcal/h 4,000 5,000 6,300 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 16,000 19,800 24,900 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 ★ 3 Heating Capacity Btu/h 17,100 21,500 27,300 Casing Color White (3.0Y8.5/10.5) White (3.0Y8.5/10.5) White (3.0Y8.5/10.5)
  • Page 64 Si34-601A Specifications Floor Standing Type Model FXLQ20MAVE FXLQ25MAVE FXLQ32MAVE kcal/h 2,000 2,500 3,200 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 7,800 9,900 12,600 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 ★ 3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Ivory White (5Y7.5/1)
  • Page 65 Specifications Si34-601A Floor Standing Type Model FXLQ40MAVE FXLQ50MAVE FXLQ63MAVE kcal/h 4,000 5,000 6,300 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 16,000 19,800 24,900 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 ★ 3 Heating Capacity Btu/h 17,100 21,500 27,300 Casing Color Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Ivory White (5Y7.5/1)
  • Page 66 Si34-601A Specifications Concealed Floor Standing Type Model FXNQ20MAVE FXNQ25MAVE FXNQ32MAVE kcal/h 2,000 2,500 3,200 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 7,800 9,900 12,600 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 ★ 3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color Galvanized Steel Plate Galvanized Steel Plate...
  • Page 67 Specifications Si34-601A Concealed Floor Standing Type Model FXNQ40MAVE FXNQ50MAVE FXNQ63MAVE kcal/h 4,000 5,000 6,300 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 16,000 19,800 24,900 ★ 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 ★ 3 Heating Capacity Btu/h 17,100 21,500 27,300 Casing Color Galvanized Steel Plate Galvanized Steel Plate...
  • Page 68 Si34-601A Specifications Ceiling Suspended Cassette Type Indoor Unit FXUQ71MAV1 FXUQ100MAV1 FXUQ125MAV1 Model Connection Unit BEVQ71MAVE BEVQ100MAVE BEVQ125MAVE kcal/h 7,100 10,000 12,500 ★ 1 Cooling Capacity (19.5°CWB) Btu/h 28,300 39,600 49,500 11.6 14.5 ★ 2 Cooling Capacity (19.0°CWB) 11.2 14.0 kcal/h 7,700 10,800 12,000...
  • Page 69 Specifications Si34-601A Outdoor Air Processing Unit Model FXMQ125MFV1 FXMQ200MFV1 FXMQ250MFV1 kcal/h 12,000 19,300 24,100 ★ 1 Cooling Capacity Btu/h 47,800 76,400 95,500 14.0 22.4 28.0 kcal/h 7,700 12,000 15,000 ★ 1 Heating Capacity Btu/h 30,400 47,400 59,400 13.9 17.4 Casing Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate...

  • Page 70: Part 3 Refrigerant Circuit

    Si34-601A Part 3 Refrigerant Circuit Refrigerant Circuit .................60 1.1 RXYQ5P....................60 1.2 RXYQ8P....................62 RXYQ10P, 12P ..................64 RXYQ14P, 16P, 18P ................66 1.5 Outdoor air processing unit FXMQ125MFV1~250MFV1......68 Functional Parts Layout ................69 RXYQ5P....................69 RXYQ8P....................70 RXYQ10P, 12P (12P: EUROPE) ............71 2.4 RXYQ12P....................72 RXYQ14P, 16P, 18P ................73 Refrigerant Flow for Each Operation Mode...........74 Refirgerant Circuit...

  • Page 71: Refrigerant Circuit

    Refrigerant Circuit Si34-601A Refrigerant Circuit RXYQ5P No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 52Hz and 188Hz by using the inverter. The number of operating steps is as follows when Inverter compressor is Inverter compressor (INV) operated.
  • Page 72 Si34-601A Refrigerant Circuit RXYQ5P 3D050782 Refirgerant Circuit...

  • Page 73: Rxyq8P

    Refrigerant Circuit Si34-601A RXYQ8P No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 52Hz and 266Hz by using the inverter, while Standard compressor is operated with commercial power supply Inverter compressor (INV) only. The number of operating steps is as follows when Inverter compressor is operated in combination with Standard compressor.
  • Page 74 Si34-601A Refrigerant Circuit RXYQ8P 3D050783 Refirgerant Circuit...

  • Page 75: Rxyq10P, 12P

    Refrigerant Circuit Si34-601A RXYQ10P, 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 76 Si34-601A Refrigerant Circuit RXYQ10P, 12P 3D050784 Refirgerant Circuit...

  • Page 77: Rxyq14P, 16P, 18P

    Refrigerant Circuit Si34-601A RXYQ14P, 16P, 18P No. in refrigerant Symbol Name Major Function system diagram Inverter compressor (INV) Inverter compressor is operated on frequencies between 52Hz and 266Hz by using Standard compressor 1 the inverter, while Standard compressor is operated with commercial power supply (STD1) only.
  • Page 78 Si34-601A Refrigerant Circuit RXYQ14P, 16P, 18P 3D050785 Refirgerant Circuit...

  • Page 79: Outdoor Air Processing Unit

    Refrigerant Circuit Si34-601A Outdoor air processing unit FXMQ125MFV1~250MFV1 1.5.1 Refrigerant System 4D018650B Main Control Equipment Code Symbol Name Main function Used to control the flow rate of refrigerant, and Motorized valve make the SH control while in cooling or the SC control while in heating.∗...

  • Page 80: Functional Parts Layout

    Si34-601A Functional Parts Layout Functional Parts Layout RXYQ5P Plan Accumulator ass'y Heat exchanger ACCUMULATOR THERMISTOR Front View THERMISTOR Pressure switch (High pressure protection) (S1PH) 4 way valve THERMISTOR (Y3S) Solenoid valve (Hot gas bypass) THERMISTOR (Y1S) ELECTRONIC EXPANSION VALVE THERMISTOR Solenoid valve (Accumulator oil return) (Y2S) THERMISTOR...

  • Page 81: Rxyq8P

    Functional Parts Layout Si34-601A RXYQ8P Plan Heat exchanger Accumulator High pressure sensor (S1NPH) THERMISTOR Front View THERMISTOR THERMISTOR ELECTRONIC ELECTRONIC THERMISTOR THERMISTOR THERMISTOR THERMISTOR Refirgerant Circuit...

  • Page 82: Rxyq10P, 12P (12P: Europe)

    Si34-601A Functional Parts Layout RXYQ10P, 12P (12P: EUROPE) Plan Accumulator Heat exchanger THERMISTOR THERMISTOR Front View THERMISTOR THERMISTOR ELECTRONIC ELECTRONIC THERMISTOR THERMISTOR THERMISTOR THERMISTOR Refirgerant Circuit...

  • Page 83: Rxyq12P

    Functional Parts Layout Si34-601A RXYQ12P Plan Heat exchanger PRESSURE SWITCH (HIGH PRESSURE PROTECTION) (S2PH) Accumulator PRESSURE SWITCH (HIGH PRESSURE PROTECTION) (S1PH) THERMISTOR (MIC, DISCHARGE PIPE) THERMISTOR (M2C, DISCHARGE PIPE) (R31T) (R32T) Front View FAN MOTOR FAN MOTOR (M2F) (M1F) THERMISTOR (R5T) THERMISTOR (R7T)

  • Page 84: Rxyq14P, 16P, 18P

    Si34-601A Functional Parts Layout RXYQ14P, 16P, 18P Plan Heat exchanger Accumulator THERMISTOR THERMISTOR THERMISTOR Front View THERMISTOR THERMISTOR ELECTRONIC ELECTRONIC THERMISTOR THERMISTOR THERMISTOR THERMISTOR Refirgerant Circuit...

  • Page 85: Refrigerant Flow For Each Operation Mode

    Refrigerant Flow for Each Operation Mode Si34-601A Refrigerant Flow for Each Operation Mode RXYQ5P Cooling Operation Indoor unit operation Fan ON Fan ON " ON " Fan OFF " OFF " " ON " Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure gas"...
  • Page 86 Si34-601A Refrigerant Flow for Each Operation Mode Cooling Oil Return Operation Indoor unit operation Fan ON Fan OFF Fan ON " OFF " " ON " " ON " Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure gas" "High temperature, high pressure liquid"...
  • Page 87 Refrigerant Flow for Each Operation Mode Si34-601A Heating Oil Return & Defrost Operation Indoor unit operation Fan OFF Fan OFF Fan OFF " ON " " OFF " " ON " Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure gas" "High temperature, high pressure liquid"...
  • Page 88 Si34-601A Refrigerant Flow for Each Operation Mode Heating Operation Indoor unit operation Fan ON Fan OFF " ON " " OFF " " ON " Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure"...
  • Page 89 Refrigerant Flow for Each Operation Mode Si34-601A RXYQ8P Cooling Operation Indoor unit operation Fan ON Fan ON " ON " Fan OFF " OFF " " ON " "High temperature, high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid" "Low temperature, low pressure"...
  • Page 90 Si34-601A Refrigerant Flow for Each Operation Mode Cooling Oil Return Indoor unit operation Fan OFF Fan ON Fan ON " OFF " " ON " " ON " "High temperature, high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid" "Low temperature, low pressure"...
  • Page 91 Refrigerant Flow for Each Operation Mode Si34-601A Heating Oil Return & Defrost Indoor unit operation " ON " " OFF " " ON " Fan OFF Fan OFF Fan OFF "High temperature, high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid"...
  • Page 92 Si34-601A Refrigerant Flow for Each Operation Mode Heating Operation Indoor unit operation Fan ON Fan LL Fan OFF " ON " " OFF " " ON " "High temperature, high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid" "Low temperature, low pressure"...
  • Page 93 Refrigerant Flow for Each Operation Mode Si34-601A RXYQ10P, 12P Cooling Operation Indoor unit operation Fan ON Fan ON " ON " Fan OFF " OFF " " ON " "High temperature, high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid"...
  • Page 94 Si34-601A Refrigerant Flow for Each Operation Mode Cooling Oil Return Indoor unit operation Fan OFF Fan ON Fan ON " OFF " " ON " " ON " "High temperature, high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid" "Low temperature, low pressure"...
  • Page 95 Refrigerant Flow for Each Operation Mode Si34-601A Heating Oil Return & Defrost Indoor unit operation " ON " " OFF " " ON " Fan OFF Fan OFF Fan OFF "High temperature, high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid"...
  • Page 96 Si34-601A Refrigerant Flow for Each Operation Mode Heating Operation Indoor unit operation Fan ON Fan LL Fan OFF " ON " " OFF " " ON " "High temperature, high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid" "Low temperature, low pressure"...
  • Page 97 Refrigerant Flow for Each Operation Mode Si34-601A RXYQ14P, 16P, 18P Cooling Operation Indoor unit operation Fan ON Fan ON Fan OFF " ON " " OFF " " ON " "High temperature, high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid"...
  • Page 98 Si34-601A Refrigerant Flow for Each Operation Mode Cooling Oil Return Operation Indoor unit operation Fan ON Fan OFF Fan ON " ON " " OFF " " ON " "High temperature, high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid"...
  • Page 99 Refrigerant Flow for Each Operation Mode Si34-601A Heating Oil Return & Defrost Operation Indoor unit operation " ON " " OFF " " ON " Fan OFF Fan OFF Fan OFF "High temperature, high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid"...
  • Page 100 Si34-601A Refrigerant Flow for Each Operation Mode Heating Operation Indoor unit operation Fan ON Fan LL " OFF " " ON " Fan OFF "High temperature, high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid" "Low temperature, low pressure"...
  • Page 101 Refrigerant Flow for Each Operation Mode Si34-601A Refirgerant Circuit...

  • Page 102: Part 4 Function

    Si34-601A Part 4 Function 1. Function general ...................92 1.1 Symbol ....................92 1.2 Operation Mode..................93 2. Basic Control..................94 2.1 Normal Operation ...................94 2.2 Compressor PI Control................95 2.3 Electronic Expansion Valve PI Control..........107 2.4 Step Control of Outdoor Unit Fans ............107 2.5 Outdoor Unit Fan Control in Cooling Operation ........108 3.

  • Page 103: Function General

    Function general Si34-601A 1. Function general Symbol Symbol Electric symbol Description or function 20S1 Four way valve (Energize during heating) – Discharge pipe superheated degree DSHi – Discharge pipe superheat of inverter compressor DSHs – Discharge pipe superheat of standard compressor –...

  • Page 104: Operation Mode

    Si34-601A Function general Operation Mode Operation in stop mode Indoor unit stop or Indoor unit thermostat ON thermostat OFF Malfunction/Standby (Retry) Restart standby Pressure (Compressor stop) equalization prior to startup Malfunction/ Standby (Retry) Indoor unit stop or thermostat OFF Startup control Pump-down Operation mode residual...

  • Page 105: Basic Control

    Basic Control Si34-601A Basic Control Normal Operation 2.1.1 List of Functions in Normal Operation Function of Functional Part (Electric Part Name Symbol Symbol) Normal Cooling Normal Heating PI control, High pressure PI control, High pressure protection, Low pressure protection, Low pressure ...

  • Page 106: Compressor Pi Control

    Si34-601A Basic Control 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 107 Basic Control Si34-601A Operating Priority and Rotation of Compressors (For multi standard connection system) 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.
  • Page 108 Si34-601A Basic Control RXYQ40P, 42P, 44P No. 1 No. 2 No. 4 No. 6 No. 3 No. 5 No. 7 No. 3 No. 1 No. 4 No. 6 No. 2 No. 5 No. 7 No. 2 No. 3 No. 5 No. 7 No.
  • Page 109 Basic Control Si34-601A Compressor Step Control (Multi outdoor unit connection is available on the standard connection system) 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".
  • Page 110 Si34-601A Basic Control represents the range in which “Hz” is not stepped up. Two-unit multi system RXYQ20PY1 (8+12HP) RXYQ22PY1 (10+12HP) (To increase Step No.) (To decrease Step No.) (To increase Step No.) (To decrease Step No.) Master Slave Master Slave Master Slave Master...
  • Page 111 Basic Control Si34-601A represents the range in which “Hz” is not stepped up. RXYQ24PY1 (8+16HP) RXYQ26PY1 (8+18HP) (To increase Step No.) (To decrease Step No.) (To increase Step No.) (To decrease Step No.) Master Slave Master Slave Master Slave Master Slave STEP STEP...
  • Page 112 Si34-601A Basic Control represents the range in which “Hz” is not stepped up. RXYQ28PY1, 30PY1 (10/12+18HP) RXYQ 32PY1 (16+16HP) (To increase Step No.) (To decrease Step No.) (To increase Step No.) (To decrease Step No.) Master Slave Master Slave Master Slave Master Slave...
  • Page 113 Basic Control Si34-601A represents the range in which “Hz” is not stepped up. RXYQ 34PY1 (16+18HP) RXYQ36PY1 (18+18HP) (To increase Step No.) (To decrease Step No.) (To increase Step No.) (To decrease Step No.) Master Slave Master Slave Master Slave Master Slave STEP...
  • Page 114 Si34-601A Basic Control represents the range in which “Hz” is not stepped up. Three-unit multi system RXYQ38PY1 (8+12+18HP) RXYQ 40PY1 (8+16+16HP) (To increase Step No.) (To decrease Step No.) (To increase Step No.) (To decrease Step No.) Master Slave Slave Master Slave Slave...
  • Page 115 Basic Control Si34-601A represents the range in which “Hz” is not stepped up. RXYQ 42PY1 (8+16+18HP) RXYQ44PY1 (8+18+18HP) (To increase Step No.) (To decrease Step No.) (To increase Step No.) (To decrease Step No.) Master Slave Slave Master Slave Slave Master Slave Slave...
  • Page 116 Si34-601A Basic Control represents the range in which “Hz” is not stepped up. RXYQ46PY1, 48PY1 (10/12+18+18HP) RXYQ50PY1, 52PY1 (14/16+18+18HP) (To increase Step No.) (To decrease Step No.) (To increase Step No.) (To decrease Step No.) Master Slave Slave Master Slave Slave Master Slave...
  • Page 117 Basic Control Si34-601A RXYQ54PY1 (18+18+18HP) (To increase Step No.) (To decrease Step No.) Master Slave Slave Master Slave Slave STEP STEP unit unit1 unit2 unit unit1 unit2 52 Hz 52 Hz 52 Hz 52 Hz 56 Hz 56 Hz 56 Hz 56 Hz 62 Hz 62 Hz 62 Hz 62 Hz...

  • Page 118: Electronic Expansion Valve Pi Control

    Si34-601A Basic Control Electronic Expansion Valve PI Control Main Motorized Valve EV1 Control Carries out the motorized valve (Y1E) PI control to maintain the evaporator outlet superheated degree (SH) at constant during heating operation to make maximum use of the outdoor unit heat exchanger (evaporator).

  • Page 119: Outdoor Unit Fan Control In Cooling Operation

    Basic Control Si34-601A 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. Upper limit of fan revolutions: Step 8 Pc <...

  • Page 120: Special Control

    Si34-601A 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 121: Large Capacity Start Up Control (Heating)

    Special Control Si34-601A 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 122: Oil Return Operation

    Si34-601A Special Control Oil Return Operation In order to prevent the compressor from running out of oil, the oil return operation is conducted to recover oil flown out from the compressor to the system side. 3.3.1 Oil Return Operation in Cooling Operation [Start conditions] Referring to the set conditions for the following items, start the oil return operation in cooling.
  • Page 123 Special Control Si34-601A 3.3.2 Oil Return Operation in Heating Operation Oil return preparation Outdoor Unit Actuator Oil return operation Post-oil-return operation operation 124 Hz + OFF + OFF Compressor Upper limit control 176 Hz + ON + ON 2-steps increase/20sec. till Pc - Pe>0.4 MPa STEP7 Outdoor unit fan...

  • Page 124: Defrosting Operation

    Si34-601A Special Control Defrosting Operation To defrost the outdoor unit heat exchanger while in Evaporator, the defrost operation is conducted to recover the heating capacity. [Start conditions] Referring to the set conditions for the following items, start the defrosting operation. •...

  • Page 125: Pump-Down Residual Operation

    Special Control Si34-601A 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 126: Standby

    Si34-601A Special Control Standby 3.6.1 Restart Standby Used to forcedly stop the compressor for a period of 3 minutes, in order to prevent the frequent ON/OFF of the compressor and equalize the pressure within the refrigerant system. Actuator Operation Compressor Ta>30°C: STEP4 Outdoor unit fan Ta≤30°C: OFF...

  • Page 127: Stopping Operation

    Special Control Si34-601A 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. Actuator Operation Compressor Outdoor unit fan Four way valve Holds Main motorized valve (EV1) 0 pls Subcooling motorized valve (EV2) 0 pls...
  • Page 128 Si34-601A Special Control 3.7.3 Stopping Operation of Slave Units During Master Unit is in Operation with Multi-Outdoor-Unit System While the master unit is in operation, this mode is used to set the refrigerant flow rate to a required level using a slave unit in the stopped mode.

  • Page 129: Protection Control

    Protection Control Si34-601A 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 130: Low Pressure Protection Control

    Si34-601A Protection Control Low Pressure Protection Control This low pressure protection control is used to protect compressors against the transient decrease of low pressure. [In cooling operation] ★ In the case of multi-outdoor-unit system, the entire system performs this control in the following sequence.

  • Page 131: Discharge Pipe Protection Control

    Protection Control Si34-601A 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. ★ Each compressor performs the discharge pipe temperature protection control individually in the following sequence.

  • Page 132: Inverter Protection Control

    Si34-601A 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 133: Std Compressor Overload Protection

    Protection Control Si34-601A 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 134: Other Control

    Si34-601A Other Control Other Control Outdoor Unit Rotation In the case of multi-outdoor-unit system, this outdoor unit rotation is used to prevent the compressor from burning out due to unbalanced oil level between outdoor units. [Details of outdoor unit rotation] In the case of multi-outdoor-unit system, each outdoor unit is given an operating priority for the control.

  • Page 135: Emergency Operation

    Other Control Si34-601A <In Cooling> · There are outdoor units that stop operation. · Low pressure of all outdoor units in operation < 0.25 MPa. Normal operation Normal operation Master Slave 1 Slave 2 Master Slave 1 Slave 2 Outdoor unit Priority Priority Priority...
  • Page 136 Si34-601A Other Control 5.2.2 In the Case of 1-Outdoor-Unit System (RXYQ8P to 18P) [Set the system to operation prohibition mode by compressor] • In order to set an INV compressor to operation LED display (7:ON :OFF :Blink) prohibition mode, set No. 42 of Setting mode 2 to H1P----H7P "EMERGENCY OPERATION".
  • Page 137 Other Control Si34-601A Note : In order to forcedly clear the automatic backup operation, reset the power supply with the outdoor unit in the stopped state. Function...
  • Page 138 Si34-601A Other Control [Emergency operation with settings in service mode] ∗ “Inhibition of operation” is set with each outdoor unit. Make the following settings with the master unit. (Setting with the slave unit becomes disabled.) ∗ Discriminate the operating status of the master unit / slave units through the following LED display.

  • Page 139: Demand Operation

    Other Control Si34-601A Demand Operation In order to save the power consumption, the capacity of outdoor unit is saved with control forcibly by using “Demand 1 Setting” or “Demand 2 Setting”. To operate the unit with this mode, additional setting of “Continuous Demand Setting” or external input by external control adapter is required.

  • Page 140: Outline Of Control (Indoor Unit)

    Si34-601A Outline of Control (Indoor Unit) 6. Outline of Control (Indoor Unit) Drain Pump Control 1. The drain pump is controlled by the ON/OFF buttons (4 button (1) - (4) given in the figure below). 6.1.1 When the Float Switch is Tripped While the Cooling Thermostat is ∗...
  • Page 141 Outline of Control (Indoor Unit) Si34-601A 6.1.3 When the Float Switch is Tripped During Heating Operation: During heating operation, if the float switch is not reset even after the 5 minutes operation, 5 seconds stop, 5 minutes operation cycle ends, operation continues until the switch is reset. 6.1.4 When the Float Switch is Tripped and “AF”...

  • Page 142: Louver Control For Preventing Ceiling Dirt

    Si34-601A Outline of Control (Indoor Unit) Louver Control for Preventing Ceiling Dirt We have added a control feature that allows you to select the range of in which air direction can be adjusted in order to prevent the ceiling surrounding the air discharge outlet of ceiling mounted cassette type units from being soiled.

  • Page 143: Thermostat Sensor In Remote Controller

    Outline of Control (Indoor Unit) Si34-601A 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 144 Si34-601A Outline of Control (Indoor Unit) Heating When heating, the hot air rises to the top of the room, resulting in the temperature being lower near the floor where the occupants are. When controlling by body thermostat sensor only, the unit may therefore be turned off by the thermostat before the lower part of the room reaches the preset temperature.

  • Page 145: Thermostat Control While In Normal Operation

    Outline of Control (Indoor Unit) Si34-601A 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 146: Electronic Expansion Valve Control

    Si34-601A Outline of Control (Indoor Unit) Electronic Expansion Valve Control • Electronic expansion Valve Control In cooling, to maximize the capacity of indoor unit heat exchanger (evaporator), operate the electronic expansion valve under PI control so that the evaporator outlet superheated degree (SH) will become constant.

  • Page 147: Freeze Prevention

    Outline of Control (Indoor Unit) Si34-601A 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 148: 6.10 List Of Swing Flap Operations

    Si34-601A Outline of Control (Indoor Unit) (2) The heater control (ON/OFF) Condensing pressure 50ºC 60ºC is conducted by converting equivalent saturated the heater temperature into temperature the condensing pressure equivalent saturated temperature (Tc) according to the temperature detection through the high pressure sensor (SINPH) of the outdoor unit. [Fan residual operation] While the heater turns OFF, in order to prevent the activation of the thermal protector, the fan conducts residual operation for a given period of time after the heater turns OFF.

  • Page 149: Control Of Outdoor Air Processing Unit (Unique Control For Outdoor Air Processing Unit)

    Outline of Control (Indoor Unit) Si34-601A 6.11 Control of Outdoor Air Processing Unit (Unique Control for Outdoor Air Processing Unit) 6.11.1 Selection of Operation Mode (by suction air thermostat) Objective To select cooling, heating, or fan operation mode according to the suction air (outdoor air) temperature.
  • Page 150 Si34-601A Outline of Control (Indoor Unit) 6.11.2 Discharge Air Temperature Control Used to control the EV (electronic expansion valve) opening and thermostat ON/OFF so as to keep the discharge air temperature at the set temperature. (1) Cooling operations Refrigerant Discharge Temp.
  • Page 151 Outline of Control (Indoor Unit) Si34-601A (2) Heating operations Refrigerant Discharge (From Outdoor unit) Temp. Setting Refrigerant T1: Temperature detected by suction air thermistor Th1 T2: Temperature detected by liquid pipe temp. thermistor Th2 T3: Temperature detected by gas pipe temp. thermistor Th3 T4: Temperature detected by discharge air thermistor Th4 Tc : Outdoor unit condensing temperature EV: Electronic expansion valve opening...
  • Page 152 Si34-601A Outline of Control (Indoor Unit) (3) Thermostat OFF by discharge air temperature <Cooling> Target discharge air temp. Ts – Discharge air temp. T4 >5 degree continue for 5 minutes. → → Thermostat stops for 1 minute. Thermostat ON <Heating> ...
  • Page 153 Outline of Control (Indoor Unit) Si34-601A Function...

  • Page 154: Part 5 Test Operation

    Si34-601A Part 5 Test Operation Test Operation ..................144 1.1 Installation Process ................144 Procedure and Outline .................145 Operation When Power is Turned On ..........159 Outdoor Unit PC Board Layout ............160 Field Setting ..................161 Field Setting from Remote Controller ...........161 3.2 Field Setting from Outdoor Unit............174 Test Operation...

  • Page 155: Test Operation

    Test Operation Si34-601A 1. Test Operation Installation Process Below Fiure 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 156: Procedure And Outline

    Si34-601A 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 157 Test Operation Si34-601A 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 158 Si34-601A Test Operation 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 ciruit insulation measurement has been completed. (measuring after the shutoff valve is opened will cause the insulation value to drop.) 1.2.3.1 Preparations...
  • Page 159 Test Operation Si34-601A 1.2.3.2 Air Tight Test and Vacuum Drying Method After finished piping work, carry out air tight test and vacuum drying. <Air tight test> Pressurize the liquid and gas pipes to 4.0MPa (40bar) (do not pressurize more than 4.0MPa (40bar)).
  • Page 160 Si34-601A Test Operation [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 145 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 161 Test Operation Si34-601A [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 162 Si34-601A Test Operation 1.2.4.2 Procedure of Adding Refrigerant Charging and Check Operation 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 163 Test Operation Si34-601A 3. Open the valve C (See the figure 31. The valve A, B and the liquid and gas side shutout valve must be left closed), and charge the refrigerant of the “additional charging amount” from the liquid side shutout valve service port. If the “additional charging amount”...
  • Page 164 Si34-601A Test Operation [Refrigerant Charging Operation Procedure] STEP1 Open the liquid and gas side shutoff valves (The valve A~C must be closed. The valve A~C means the valves in the figure 33.) [Display of normal system] C/H SELECTOR SERV. MODE TEST/ L.N.O.P DEMA- MONI- MULTI...
  • Page 165 Test Operation Si34-601A NOTE: • For check operation, the following work will be performed. Check of shutoff valve opening Check of miswiring Judgment of piping length Check of refrigerant overcharge • It takes about 40 minutes to complete the check operation. [Check Operation Procedure] STEP1 Make the onsite setting as needed using the dip switches on the outdoor unit PC-board (A1P) with the power off (See “1.2.5.1 Onsite Settings With the Power Off”)
  • Page 166 Si34-601A Test Operation [Remote controller displays malfunction code] Malfunction Installation error Remedial action code E3, E4 The shutoff valve of the outdoor F3, F6 Open the shutoff valve. unit is left closed. The phases of the power to the Exchange two of the three phases (L1, L2, L3) to outdoor unit is reversed.
  • Page 167 Test Operation Si34-601A 1.2.5 Onsite Settings NOTE: In the case of a multi system, all onsite settings should be made on the master unit. Settings made on sub units are invalid. The outdoor unit to which the indoor unit transmission wire are connected is the master unit, and all other units are sub units.
  • Page 168 Si34-601A Test Operation 1.2.6 Test Run 1.2.6.1 Before Test Run • Make sure the following works are completed in accordance with the installation manual. Piping work Wiring work Air tight test Vacuum drying Additional refrigerant charge • Check that all work for the indoor unit are finished and there are no danger to operate. 1.2.6.2 Test Run After check operation is completed, operate the unit normally and check the following.
  • Page 169 Test Operation Si34-601A 1.2.6.3 Checks after Test Run Perform the following checks after the test run is complete. • Record the contents of field setting. → Record them on the accessory “REQUEST FOR THE INDICATION” label. And attach the label on the back side of the front panel. •...

  • Page 170: Operation When Power Is Turned On

    Si34-601A 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 171: Outdoor Unit Pc Board Layout

    Outdoor Unit PC Board Layout Si34-601A 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 172: Field Setting

    Si34-601A 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 173 Field Setting Si34-601A 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 174 Si34-601A 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 175 Field Setting Si34-601A 3.1.4 Setting Contents and Code No. – VRV Indoor unit Mode Setting Setting Contents Second Code No.(Note 3) Switch system indoor Note 2 unit 10(20) Filter contamination heavy/ Super Light Approx. Heavy Approx. — — settings light (Setting for display long life 10,000 5,000...
  • Page 176 Si34-601A Field Setting 3.1.5 Applicable range of Field setting Ceiling mounted cassette type Slim Ceiling Ceiling Ceiling Wall Floor Concealed Outdoor Ceiling mounted mounted suspended mounted standing Floor Ceiling Multi flow Double Corner mounted built-in duct type type type standing suspende processing flow...
  • Page 177 Field Setting Si34-601A 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 178 Si34-601A Field Setting 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 179 Field Setting Si34-601A 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 180 Si34-601A Field Setting 3.1.7 Outdoor Air Processing Unit-Field Setting (Remote Controller) Setting Setting position No. Mode Setting contents Stain of filter 2500hr 1250hr — — — — — — — — — — — — — Filtering (20) time Display —...
  • Page 181 Field Setting Si34-601A 3.1.8 Centralized Control Group No. Setting BRC1A 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 182 Si34-601A Field Setting BRC7C Type Group No. setting by wireless remote controller for centralized control 1. When in the normal mode, push “ ” button for 4 seconds or more, and operation then BRC7E Type enters the “field set mode.” BRC4C Type 2.
  • Page 183 Field Setting Si34-601A 3.1.9 Setting of Operation Control Mode from Remote Controller (Local Setting) The operation control mode is compatible with a variety of controls and operations by limiting the functions of the operation remote controller. Furthermore, operations such as remote controller ON/OFF can be limited in accordance with the combination conditions.
  • Page 184 Si34-601A 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 185: Field Setting From Outdoor Unit

    Field Setting Si34-601A 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 186 Si34-601A Field Setting Setting item Content and objective of setting Overview of setting procedure Indoor unit fan Used to operate the indoor unit in the Set No. 5 of "Setting mode 2" to indoor unit forced H operation stopped state in forced H operation mode. forced fan H.
  • Page 187 Field Setting Si34-601A Setting by dip switches Using dip switches on the PC board enables field setting shown below. However, make no changes of factory settings except for DS1-1. Dipswitch Setting item Description Setting Used to set cool / heat select by Cool/Heat selector DS1-1 Cool / Heat select equipped with outdoor unit.
  • Page 188 Si34-601A Field Setting “Detail of DS1-1~4, DS2-1~4 setting” (for Overseas general) Unit Setting method ( represents the position of switches) HEAT PUMP(5HP) Set DS2-1 to ON. RXYQ5PY1 HEAT PUMP(8HP) Set DS2-1 and DS2-3 to ON. RXYQ8PY1 HEAT PUMP(10HP) Set DS2-1, DS2-2 and DS2-3 RXYQ10PY1 to ON.
  • Page 189 Field Setting Si34-601A Setting by pushbutton switches The following settings are made by pushbutton 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 190 Si34-601A Field Setting a. “Setting mode 1” This mode is used to set and check the following items. 1. Set items ············ In order to make COOL/HEAT selection in a batch of outdoor unit group, change the setting. • COOL/HEAT selection (IND) ·····················Used to select COOL or HEAT by individual outdoor unit (factory set).
  • Page 191 Field Setting Si34-601A Setting item Description b. “Setting mode 2” Used to make setting of contents to display on the digital Degital 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 192 Si34-601A Field Setting Setting item Description Setting of difference Make the setting when the outdoor unit is installed 40 m in elevation for the or more below the indoor unit. outdoor unit Emergency operation (Setting for the master unit operation prohibition in multi- outdoor-unit system)
  • Page 193 Field Setting Si34-601A Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set 8777777 Address 8777778 Binary number Degital pressure gauge kit display (4 digits) 8778888 8777777 ∗ Address Binary number 8777778 Cool / Heat Unified address...
  • Page 194 Si34-601A Field Setting Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set 8777778 ∗ ENECUT test ENECUT output OFF operation (Domestic Japan only) ENECUT output forced ON 8777787 Level 1 (outdoor fan with 6 step or lower) 8777778 8777787 ∗...
  • Page 195 Field Setting Si34-601A c. Monitor mode LED display Setting item Data display H2P H3P H5P H6P To enter the monitor mode, push the 9 7 7 7 7 7 7 Various settings Lower 4 digits MODE (BS1) button when in “Setting mode 1”.
  • Page 196 Si34-601A Field Setting Push the SET button and match with the LEDs No. 1 - 15, push the RETURN button, and confirm the data for each setting. ★ Data such as addresses and number of units is expressed as binary numbers; the two ways of expressing are as follows: The No.
  • Page 197 Field Setting Si34-601A 3.2.2 Cool / Heat Mode Switching There are the following 4 cool/heat switching modes. Set cool/heat separately for each outdoor unit system by indoor unit remote controller. Set cool/heat separately for each outdoor unit system by cool/heat selector. Set cool/heat for more than one outdoor unit system simultaneously in accordance with unified master outdoor unit by indoor unit remote controller.
  • Page 198 Si34-601A Field Setting Set Cool / Heat Separately for Each Outdoor Unit System by Cool / Heat Selector It does not matter whether or not there is outdoor - outdoor unit wiring. Set outdoor unit PC board DS1-1 to OUT (factory set). Set cool/heat switching to IND (individual) for “Setting mode 1”...
  • Page 199 Field Setting Si34-601A Set Cool / Heat for More Than One Outdoor Unit System Simultaneously in Accordance with Unified Master Outdoor Unit by Indoor Unit Remote Controller Install the external control adapter for outdoor unit on either the outdoor-outdoor, indoor- outdoor transmission line.
  • Page 200 Si34-601A Field Setting Set Cool / Heat for More Than One Outdoor Unit System Simultaneously in Accordance with Unified Master Outdoor Unit by Cool / Heat Selector Install the external control adapter for outdoor unit on either the outdoor-outdoor, indoor- outdoor transmission line.
  • Page 201 Field Setting Si34-601A Supplementation on When switching cool/heat for each adapter PC board with the use of more than one adapter PC board, set the address of the external control adaptor for outdoor unit PC board DS1 and DS2 so that it matches the unified cool/heat address of outdoor unit main PC board. Address setting for (Set lower 5 digits with binary number.) [No.0 to No.31] External control adaptor for outdoor unit...
  • Page 202 Si34-601A Field Setting 3.2.3 Setting of Low Noise Operation and Demand Operation Setting of Low Noise Operation By connecting the external contact input to the low noise input of the outdoor unit external control adapter (optional), you can lower operating noise by 2-3 dB. Setting Content Mode 1...
  • Page 203 Field Setting Si34-601A Image of operation in the case of A Image of operation in the case of B Image of operation in the case of A and B Test Operation...
  • Page 204 Si34-601A Field Setting Setting of Demand Operation By connecting the external contact input to the demand input of the outdoor unit external control adapter (optional), the power consumption of unit operation can be saved suppressing the compressor operating condition. Set item Condition Content Demand 1...
  • Page 205 Field Setting Si34-601A 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 206 Si34-601A Field Setting Detailed Setting Procedure of Low Noise Operation and Demand Control 1. Setting mode 1 (H1P off) → In setting mode 2, push the BS1 (MODE button) one time. Setting mode 2 is entered and H1P lights. During the setting mode 1 is displayed, “In low noise operation” and “In demand control” are displayed.
  • Page 207 Field Setting Si34-601A : 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 208 Si34-601A Field Setting 3.2.4 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 209 Field Setting Si34-601A 3.2.5 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 210: Part 6 Troubleshooting

    Si34-601A Part 6 Troubleshooting 1. Symptom-based Troubleshooting ............201 2. Troubleshooting by Remote Controller ..........204 2.1 The INSPECTION / TEST Button............204 2.2 Self-diagnosis by Wired Remote Controller .........205 2.3 Self-diagnosis by Wireless Remote Controller ........206 2.4 Operation of The Remote Controller’s Inspection / Test Operation Button ................209 2.5 Remote Controller Service Mode ............210 2.6 Remote Controller Self-Diagnosis Function .........212...
  • Page 211 Si34-601A 3.29 “J9” Outdoor Unit: Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor (R5T) ..............257 3.30 “JA” Outdoor Unit: Malfunction of High Pressure Sensor......258 3.31 “JC” Outdoor Unit: Malfunction of Low Pressure Sensor.......259 3.32 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise ..........260 3.33 “L5”...

  • Page 212: Symptom-Based Troubleshooting

    Si34-601A Symptom-based Troubleshooting 1. Symptom-based Troubleshooting Symptom Supposed Cause Countermeasure The system does not start operation at all. Blowout of fuse(s) Turn Off the power supply and then replace the fuse(s). Cutout of breaker(s) • If the knob of any breaker is in its OFF position, turn ON the power supply.
  • Page 213 Symptom-based Troubleshooting Si34-601A 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 214 Si34-601A Symptom-based Troubleshooting 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 215: Troubleshooting By Remote Controller

    Troubleshooting by Remote Controller Si34-601A 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 216: Self-Diagnosis By Wired Remote Controller

    Si34-601A Troubleshooting by Remote Controller Self-diagnosis by Wired Remote Controller Explanation If operation stops due to malfunction, the remote controller’s operation LED blinks, and malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.) The malfunction code enables you to tell what kind of malfunction caused operation to stop.

  • Page 217: Self-Diagnosis By Wireless Remote Controller

    Troubleshooting by Remote Controller Si34-601A 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 218 Si34-601A Troubleshooting by Remote Controller The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed. Troubleshooting...
  • Page 219 Troubleshooting by Remote Controller Si34-601A Troubleshooting...

  • Page 220: Operation Of The Remote Controller's Inspection / Test Operation Button

    Si34-601A Troubleshooting by Remote Controller Operation of The Remote Controller’s Inspection / Test Operation Button Unit Malfunction code Inspection Normal display (No display) Malfunction code blinks when a malfunction occurs. Inspection/test Push the button. operation Unit Example of capacity code display 0 7 1...

  • Page 221: Remote Controller Service Mode

    Troubleshooting by Remote Controller Si34-601A Remote Controller Service Mode How to Enter the Service Mode Service Mode 1. Select the mode No. Set the desired mode No. with the button. Operation (For wireless remote controller, Mode 43 only can be set.) Method 2.
  • Page 222 Si34-601A Troubleshooting by Remote Controller Mode Function Contents and operation method Remote controller display example Malfunction Display malfunction hysteresis. hysteresis display The history No. can be changed with the Unit 1 button. Malfunction code 2-U4 Malfunction code Hystory No: 1 - 9 1: Latest (VE007) Display of sensor...

  • Page 223: Remote Controller Self-Diagnosis Function

    Troubleshooting by Remote Controller Si34-601A Remote Controller Self-Diagnosis Function The remote controller switches are equipped with a self diagnosis function so that more appropriate maintenance can be carried out. If a malfunction occurs during operation, the operation lamp, malfunction code and display of malfunctioning unit No. let you know the contents and location of the malfunction.
  • Page 224 Si34-601A Troubleshooting by Remote Controller 8: ON 7: OFF 9: Blink Malfunction Operation Inspection Unit No. Malfunction contents Page code lamp display Referred Indoor Unit Error of external protection device PC board defect, E PROM defect Malfunction of drain level control system (S1L) Fan motor (M1F) lock, overload Malfunction of swing flap motor (MA) Malfunction of moving part of electronic expansion...
  • Page 225 Troubleshooting by Remote Controller Si34-601A 8: ON 7: OFF 9: 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 226 Si34-601A Troubleshooting by Remote Controller Troubleshooting...
  • Page 227 Troubleshooting by Remote Controller Si34-601A Malfunction code indication by outdoor unit PC board <Monitor mode> Contents of malfunction Malfunction To enter the monitor mode, push the code MODE (BS1) button when in Abnormal discharge pressure HPS activated “Setting mode 1”. Abnormal suction pressure Abnormal Pe Compressor lock...
  • Page 228 Si34-601A Troubleshooting by Remote Controller 8: ON 7: OFF 9:Blink Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Malfunction code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P ∗...
  • Page 229 Troubleshooting by Remote Controller Si34-601A <Monitor mode> Contents of malfunction Malfunction To enter the monitor mode, push the code MODE (BS1) button when in Open phase/Power supply imbalance Imbalance of inverter power supply “Setting mode 1”. voltage Faulty temperature sensor inside Faulty thermistor of inverter box switch box Faulty temperature sensor of inverter...
  • Page 230 Si34-601A Troubleshooting by Remote Controller 8: ON 7: OFF 9:Blink Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Malfunction code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P ∗...

  • Page 231: Troubleshooting By Indication On The Remote Controller

    Troubleshooting by Indication on the Remote Controller Si34-601A 3. Troubleshooting by Indication on the Remote Controller “A0” Indoor Unit: Error of External Protection Device Remote Controller Display Applicable All indoor unit models Models Method of Detect open or short circuit between external input terminals in indoor unit. Malfunction Detection Malfunction...

  • Page 232: A1" Indoor Unit: Pc Board Defect

    Si34-601A Troubleshooting by Indication on the Remote Controller “A1” Indoor Unit: PC Board Defect Remote Controller Display Applicable All indoor unit models Models Method of Check data from E²PROM. Malfunction Detection Malfunction When data could not be correctly received from the E²PROM E²PROM : Type of nonvolatile memory.

  • Page 233: A3" Indoor Unit: Malfunction Of Drain Level Control System (S1L)

    Troubleshooting by Indication on the Remote Controller Si34-601A “A3” Indoor Unit: Malfunction of Drain Level Control System (S1L) Remote Controller Display Applicable FXCQ, FXFQ, FXSQ, FXKQ, FXDQ, FXMQ, FXUQ, FXHQ (Option), FXMQ200,250M (Option), FXAQ (Option), FXMQ-MF (Option) Models Method of By float switch OFF detection Malfunction Detection...
  • Page 234 Si34-601A 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 235: A6" Indoor Unit: Fan Motor (M1F) Lock, Overload

    Troubleshooting by Indication on the Remote Controller Si34-601A “A6” Indoor Unit: Fan Motor (M1F) Lock, Overload Remote Controller Display Applicable All indoor units Models Method of Detection by failure of signal for detecting number of turns to come from the fan motor Malfunction Detection Malfunction...

  • Page 236: A7" Indoor Unit: Malfunction Of Swing Flap Motor (M1S)

    Si34-601A Troubleshooting by Indication on the Remote Controller “A7” 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 237 Troubleshooting by Indication on the Remote Controller Si34-601A 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 238: A9" Indoor Unit: Malfunction Of Moving Part Of

    Si34-601A Troubleshooting by Indication on the Remote Controller “A9” Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E) Remote Controller Display Applicable All indoor unit models Models Method of Use a microcomputer to check the electronic expansion valve for coil conditions. Malfunction Detection Malfunction...
  • Page 239 Troubleshooting by Indication on the Remote Controller Si34-601A ∗ 1: Coil check method for the moving part of the electronic expansion valve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins. (Normal) Pin No.

  • Page 240: Af" Indoor Unit: Drain Level Above Limit

    Si34-601A Troubleshooting by Indication on the Remote Controller “AF” Indoor Unit: Drain Level above Limit Remote Controller Display Applicable FXCQ, FXFQ, FXSQ, FXKQ, FXMQ, FXDQ, FXMQ-MF, FXUQ Models Method of Water leakage is detected based on float switch ON/OFF operation while the compressor is in non-operation.

  • Page 241: Aj" Indoor Unit: Malfunction Of Capacity Determination Device

    Troubleshooting by Indication on the Remote Controller Si34-601A “AJ” Indoor Unit: Malfunction of Capacity Determination Device Remote controller display Applicable All indoor unit models Models Method of Capacity is determined according to resistance of the capacity setting adaptor and the memory inside the IC memory on the indoor unit PC board, and whether the value is normal or abnormal Malfunction is determined.

  • Page 242: C4" Indoor Unit: Malfunction Of Thermistor (R2T) For Heat Exchanger

    Si34-601A Troubleshooting by Indication on the Remote Controller “C4” Indoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger Remote Controller Display Applicable All indoor unit models Models Method of Malfunction detection is carried out by temperature detected by heat exchanger thermistor. Malfunction Detection Malfunction...

  • Page 243: 3.10 "C5" Indoor Unit

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.10 “C5” Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes Remote Controller Display Applicable All indoor unit models Models Method of Malfunction detection is carried out by temperature detected by gas pipe thermistor. Malfunction Detection Malfunction...

  • Page 244: 3.11 "C9" Indoor Unit

    Si34-601A Troubleshooting by Indication on the Remote Controller 3.11 “C9” Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction detection is carried out by temperature detected by suction air temperature thermistor.

  • Page 245: Cj" Indoor Unit: Malfunction Of Thermostat Sensor In

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.12 “CJ” Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction detection is carried out by temperature detected by remote controller air temperature thermistor.

  • Page 246: E1" Outdoor Unit: Pc Board Defect

    Si34-601A Troubleshooting by Indication on the Remote Controller 3.13 “E1” Outdoor Unit: PC Board Defect Remote Controller Display Applicable RXYQ5P~54P 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 247: E3" Outdoor Unit: Actuation Of High Pressure Switch

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.14 “E3” Outdoor Unit: Actuation of High Pressure Switch Remote Controller Display Applicable RXYQ5P~54P 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 mode.
  • Page 248 Si34-601A Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check for the points shown below. Is the stop valve open? Is the HPS connector properly connected to the main PCB? Does the high pressure switch have continuity? Are the...

  • Page 249: E4" Outdoor Unit: Actuation Of Low Pressure Sensor

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.15 “E4” Outdoor Unit: Actuation of Low Pressure Sensor Remote Controller Display Applicable RXYQ5P~54P Models Method of Abnormality is detected by the pressure value with the low pressure sensor. Malfunction Detection Malfunction Error is generated when the low pressure is dropped under specific pressure.
  • Page 250 Si34-601A Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is the stop Open the stop valve. valve open? Mount a pressure gauge on the low-pressure service port. Connect the Service Checker.

  • Page 251: Outdoor Unit: Inverter Compressor Motor Lock

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.16 “E5” Outdoor Unit: Inverter Compressor Motor Lock Remote Controller Display Applicable RXYQ5P~54P 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 252 Si34-601A Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is the stop valve open? On-site causes. Open the stop valve. Power OFF Check the compressor cable for disconnection and flaws.

  • Page 253: Outdoor Unit: Std Compressor Motor Overcurrent/Lock

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.17 “E6” Outdoor Unit: STD Compressor Motor Overcurrent/ Lock Remote Controller Display Applicable RXYQ5P~54P 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 254: Outdoor Unit: Malfunction Of Outdoor Unit Fan Motor

    Si34-601A Troubleshooting by Indication on the Remote Controller “E7” 3.18 Outdoor Unit: Malfunction of Outdoor Unit Fan Motor Remote Controller Display Applicable RXYQ5P~54P Models Method of Malfunction of fan motor system is detected according to the fan speed detected by hall IC when the fan motor runs.
  • Page 255 Troubleshooting by Indication on the Remote Controller Si34-601A 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.
  • Page 256 Si34-601A Troubleshooting by Indication on the Remote Controller Troubleshooting Check 1 Check for the fan motor connector (Power supply cable) Resistance of the U, V, and W phases of the fan motor has got imbalanced or short Replace the outdoor unit fan circuits have been established motor.

  • Page 257: Electronic Expansion Valve (Y1E, Y2E)

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.19 “E9” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E, Y2E) Remote Controller Display Applicable RXYQ5P~54PY1 Models Method of Check disconnection of connector Check continuity of expansion valve coil Malfunction Detection Malfunction...
  • Page 258 Si34-601A Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn power supply off, and turn power supply on again. Return to normal? External factor other than malfunction (for example, noise etc.).

  • Page 259: F3" Outdoor Unit: Abnormal Discharge Pipe Temperature

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.20 “F3” Outdoor Unit: Abnormal Discharge Pipe Temperature Remote Controller Display Applicable RXYQ5P~54P 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 When the discharge pipe temperature rises suddenly...

  • Page 260: Outdoor Unit: Refrigerant Overcharged

    Si34-601A Troubleshooting by Indication on the Remote Controller 3.21 “F6” Outdoor Unit: Refrigerant Overcharged Remote Controller Display Applicable RXYQ5P~54P 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 261: Outdoor Unit: Abnormal Outdoor Fan Motor Signal

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.22 “H7” Outdoor Unit: Abnormal Outdoor Fan Motor Signal Remote Controller Display Applicable RXYQ5P~54P 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 262: H9" Outdoor Unit: Malfunction Of Thermistor (R1T) For Outdoor Air

    Si34-601A Troubleshooting by Indication on the Remote Controller 3.23 “H9” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air Remote Controller Display Applicable RXYQ5P~54P Models Method of Malfunction is detected from the temperature detected by the outdoor air thermistor. Malfunction Detection Malfunction When the outside air temperature thermistor has short circuit or open circuit.

  • Page 263: Outdoor Unit: Current Sensor Malfunction

    Troubleshooting by Indication on the Remote Controller Si34-601A “J2” 3.24 Outdoor Unit: Current Sensor Malfunction Remote Controller Display Applicable RXYQ5P~54P 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 264: J3" Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R3, R31~33T)

    Si34-601A Troubleshooting by Indication on the Remote Controller 3.25 “J3” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R3, R31~33T) Remote Controller Display Applicable RXYQ5P~54P Models Method of Malfunction is detected from the temperature detected by discharge pipe temperature thermistor. Malfunction Detection Malfunction When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.

  • Page 265: J5" Outdoor Unit: Malfunction Of Thermistor (R2T), (R7T)

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.26 “J5” Outdoor Unit: Malfunction of Thermistor (R2T), (R7T) for Suction Pipe Remote Controller Display Applicable RXYQ5P~54P Models Method of Malfunction is detected from the temperature detected by the suction pipe temperature thermistor.

  • Page 266: J6" Outdoor Unit: Malfunction Of Thermistor (R4T) For Outdoor Unit Heat Exchanger

    Si34-601A Troubleshooting by Indication on the Remote Controller 3.27 “J6” Outdoor Unit: Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger Remote Controller Display Applicable RXYQ5P~54P Models Method of Malfunction is detected from the temperature detected by the heat exchanger thermistor. Malfunction Detection Malfunction...

  • Page 267: J7" Outdoor Unit: Malfunction Of Liquid Pipe Thermistor (R6T)

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.28 “J7” Outdoor Unit: Malfunction of Liquid Pipe Thermistor (R6T) Remote Controller Display Applicable RXYQ5P~54P Models Method of Malfunction is detected according to the temperature detected by liquid pipe thermistor. Malfunction Detection Malfunction When the liquid pipe thermistor is short circuited or open.

  • Page 268: Gas Pipe Thermistor (R5T)

    Si34-601A Troubleshooting by Indication on the Remote Controller 3.29 “J9” Outdoor Unit: Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor (R5T) Remote Controller Display Applicable RXYQ5P~54P Models Method of Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor.

  • Page 269: Ja" Outdoor Unit: Malfunction Of High Pressure Sensor

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.30 “JA” Outdoor Unit: Malfunction of High Pressure Sensor Remote Controller Display Applicable RXYQ5P~54P 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 270: Jc" Outdoor Unit: Malfunction Of Low Pressure Sensor

    Si34-601A Troubleshooting by Indication on the Remote Controller 3.31 “JC” Outdoor Unit: Malfunction of Low Pressure Sensor Remote Controller Display Applicable RXYQ5P~54P Models Method of Malfunction is detected from pressure detected by low pressure sensor. Malfunction Detection Malfunction When the low pressure sensor is short circuit or open circuit. Decision Conditions Supposed...

  • Page 271: L4" Outdoor Unit: Malfunction Of Inverter Radiating Fin

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.32 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Remote Controller Display Applicable RXYQ5P~54P 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 93°C.
  • Page 272 Si34-601A Troubleshooting by Indication on the Remote Controller Inverter PCB for compressor ∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P365. Troubleshooting...

  • Page 273: L5" Outdoor Unit: Inverter Compressor Abnormal

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.33 “L5” Outdoor Unit: Inverter Compressor Abnormal Remote Controller Display Applicable RXYQ5P~54P 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 274 Si34-601A Troubleshooting by Indication on the Remote Controller Troubleshooting The insulation Power OFF resistance is low (i.e., Repalce the compressor. not more than 100kΩ.) Check the compressor motor coil for any broken wire. Some phase has a broken wire. Check the power transistor on the inverter PC board using a multiple tester.

  • Page 275: L8" Outdoor Unit: Inverter Current Abnormal

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.34 “L8” Outdoor Unit: Inverter Current Abnormal Remote Controller Display Applicable RXYQ5P~54P 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) Decision Conditions Supposed...
  • Page 276 Si34-601A Troubleshooting by Indication on the Remote Controller Troubleshooting Is a difference between high pressure Faulty pressure and low pressure prior equalization: to startup Check the refrigerant 0.2MPa? system. Power ON Does the malfunction End of measures: L8 recur? It can take a maximum of 60 minutes Check the refrigerant to determine the malfunction.

  • Page 277: L9" Outdoor Unit: Inverter Start Up Error

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.35 “L9” Outdoor Unit: Inverter Start up Error Remote Controller Display Applicable RXYQ5P~54P Models Method of This malfunction code will be output if overcurrent occurs at the time of startup. Malfunction Detection Malfunction When the startup control is failed.
  • Page 278 Si34-601A Troubleshooting by Indication on the Remote Controller Troubleshooting Is a difference between high pressure Faulty pressure and low pressure prior equalization: to startup Check the refrigerant 0.2MPa? system. Power ON Does the malfunction End of measures: L9 recur? It can take a maximum of 60 minutes Check the refrigerant to determine the malfunction.

  • Page 279: 3.36 "Lc" Outdoor Unit

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.36 “LC” Outdoor Unit: Malfunction of Transmission Between Inverter and Control PC Board Remote Controller Display Applicable RXYQ5P~54P Models Method of Check the communication state between inverter PC board and control PC board by micro- computer.
  • Page 280 Si34-601A 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. Are the fan transmission wire connectors (X3A: Black, Connect the connectors X4A: Yellow) wrongly to the corresponding connected? color (black or yellow).
  • Page 281 Troubleshooting by Indication on the Remote Controller Si34-601A Troubleshooting Is the micro controller This is not LC. normal monitor (green) of the A1P blinking? Recheck for the malfunction code. Check 10 or more seconds after the power supply is turned ON. Power ON The A3P, A4P, and A3P: Replace the...

  • Page 282: P1" Outdoor Unit: Inverter Over-Ripple Protection

    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 283: P4" Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise Sensor

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.38 “P4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor Remote Controller Display Applicable RXYQ5P~54P Models Method of Resistance of radiation fin thermistor is detected when the compressor is not operating. Malfunction Detection Malfunction...
  • Page 284 Si34-601A Troubleshooting by Indication on the Remote Controller Inverter PCB for compressor ∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P365. Troubleshooting...

  • Page 285: Pj" Outdoor Unit: Faulty Field Setting After Replacing Main Pc Board Or Faulty Combination Of Pc Board

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.39 “PJ” Outdoor Unit: Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board Remote Controller Display Applicable RXYQ5P~54P Models Method of The faulty (or no) field setting after replacing PC board or faulty PC board combination is detected through communications with the inverter.

  • Page 286: 3.40 "Uo" Outdoor Unit

    Si34-601A Troubleshooting by Indication on the Remote Controller 3.40 “UO” Outdoor Unit: Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure Remote Controller Display Applicable RXYQ5P~54P Models Method of Short of gas malfunction is detected by discharge pipe temperature thermistor. Malfunction Detection Malfunction...

  • Page 287: Reverse Phase, Open Phase

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.41 “U1” Reverse Phase, Open Phase Remote Controller Display Applicable RXYQ5P~54P 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 288: Instantaneous Failure

    Si34-601A Troubleshooting by Indication on the Remote Controller 3.42 “U2” Outdoor Unit: Power Supply Insufficient or Instantaneous Failure Remote Controller Display Applicable RXYQ5P~54P Models Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Detection Malfunction...
  • Page 289 Troubleshooting by Indication on the Remote Controller Si34-601A 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 290 Si34-601A Troubleshooting by Indication on the Remote Controller Troubleshooting Check for connector connections: Remove and insert the connectors shown below. Furthermore, check the connectors for terminal conditions and continuity. If any wiring has damage, replace • X1M power receiving terminal ⇔ X400A A2P the harness.

  • Page 291: U3" Outdoor Unit: Check Operation Not Executed

    Troubleshooting by Indication on the Remote Controller Si34-601A “U3” Outdoor Unit: 3.43 Check Operation not Executed Remote Controller Display Applicable RXYQ5P~54P 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 292: Malfunction Of Transmission Between Indoor Units

    Si34-601A Troubleshooting by Indication on the Remote Controller 3.44 “U4” Malfunction of Transmission Between Indoor Units Remote Controller Display Applicable All model of indoor unit RXYQ5P~54P Models Method of Microcomputer checks if transmission between indoor and outdoor units is normal. Malfunction Detection Malfunction...
  • Page 293 Troubleshooting by Indication on the Remote Controller Si34-601A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. the indoor or outdoor unit PC board been replaced, or has the indoor - outdoor Push and hold the RESET or outdoor - outdoor unit button on the master outdoor...

  • Page 294: Remote Controller And Indoor Unit

    Si34-601A Troubleshooting by Indication on the Remote Controller 3.45 “U5” 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 295: Indoor Unit: Malfunction Of Transmission Between Outdoor Units

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.46 “U7” Indoor Unit: Malfunction of Transmission Between Outdoor Units Remote Controller Display Applicable All models of indoor 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 296 Si34-601A 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 there any broken wire or erroneous wire connection in the Fix the outdoor units multi communication wiring of connection transmission multi outdoor unit...

  • Page 297: Sub Remote Controllers

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.47 “U8” 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 298: U9" Indoor Unit: Malfunction Of Transmission Between Indoor

    Si34-601A Troubleshooting by Indication on the Remote Controller 3.48 “U9” Indoor Unit: Malfunction of Transmission Between Indoor and Outdoor Units in the Same System Remote Controller Display Applicable All models of indoor units Models Method of Detect the malfunction signal of any other indoor unit within the system concerned. Malfunction Detection Malfunction...

  • Page 299: Improper Combination Of Indoor And Outdoor Units, Indoor Units And Remote Controller

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.49 “UA” Improper Combination of Indoor and Outdoor Units, Indoor Units and Remote Controller Remote Controller Display Applicable All models of indoor unit RXYQ5P~54P 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 300 Si34-601A 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. Reset all power supplies for indoor and outdoor units connected to one and the same system.

  • Page 301: Uc" Address Duplication Of Centralized Controller

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.50 “UC” 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 302: Malfunction Of Transmission Between Centralized Controller And Indoor Unit

    Si34-601A Troubleshooting by Indication on the Remote Controller 3.51 “UE” 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 303 Troubleshooting by Indication on the Remote Controller Si34-601A 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 304 Si34-601A Troubleshooting by Indication on the Remote Controller 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 P.304) Normal Check the transmission wiring with the master...

  • Page 305: Uf" System Is Not Set Yet

    Troubleshooting by Indication on the Remote Controller Si34-601A 3.52 “UF” System is not Set yet Remote Controller Display Applicable All models of indoor units RXYQ5P~54P 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 306: Uh" Malfunction Of System, Refrigerant System Address Undefined

    Si34-601A Troubleshooting by Indication on the Remote Controller 3.53 “UH” Malfunction of System, Refrigerant System Address Undefined Remote Controller Display Applicable All models of indoor units RXYQ5P~54P 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 307 Troubleshooting by Indication on the Remote Controller Si34-601A 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 308: Troubleshooting (Op: Central Remote Controller)

    Si34-601A Troubleshooting (OP: Central Remote Controller) Troubleshooting (OP: Central Remote Controller) “M1” PC Board Defect Remote Controller Display Applicable Central remote 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. Decision Conditions Supposed...

  • Page 309: M8" Malfunction Of Transmission Between Optional Controllers For Centralized Control

    Troubleshooting (OP: Central Remote Controller) Si34-601A “M8” 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 310 Si34-601A 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. Were any changes made to the number of units of central equipment? (The central Reset the power supplies of equipment was connected once, every central equipment.

  • Page 311: Improper Combination Of Optional Controllerslers For Centralized Controllers

    Troubleshooting (OP: Central Remote Controller) Si34-601A “MA” 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 312 Si34-601A 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 313: Mc" Address Duplication, Improper Setting

    Troubleshooting (OP: Central Remote Controller) Si34-601A “MC” 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 314 Si34-601A Troubleshooting (OP: Central Remote Controller) Master-Slave Unit Combination of Intelligent Touch Controller and Central Remote Controller Setting Table 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 315 Troubleshooting (OP: Central Remote Controller) Si34-601A Procedures for 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 Detecting Broken between the outdoor-outdoor unit terminal parts F1 and F2 in the "Outdoor Unit A" that is Wires in farthest from the central remote controller, and then conduct continuity checks between the Transmission...

  • Page 316: Troubleshooting (Op: Unified On/Off Controller)

    Si34-601A 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 317 Troubleshooting (OP: Unified ON/OFF Controller) Si34-601A 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 318: Display "Under Centralized Control" Blinks (Repeats Single Blink)

    Si34-601A 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 319 Troubleshooting (OP: Unified ON/OFF Controller) Si34-601A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Has a once connected optional controller for centralized Reset power supply control been disconnected simultaneously for all optional or itsaddress controllers for centralized...
  • Page 320 Si34-601A 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 321: Display "Under Centralized Control" Blinks (Repeats Double Blink)

    Troubleshooting (OP: Unified ON/OFF Controller) Si34-601A 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 322 Si34-601A Troubleshooting (OP: Unified ON/OFF Controller) Check No. 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 323 Troubleshooting (OP: Unified ON/OFF Controller) Si34-601A [CHECK 3] 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 324 Si34-601A Troubleshooting (OP: Unified ON/OFF Controller) [CHECK 4] 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 325 Troubleshooting (OP: Unified ON/OFF Controller) Si34-601A Troubleshooting...

  • Page 326: Part 7 Appendix

    Si34-601A Part 7 Appendix 1. Piping Diagrams..................316 1.1 Outdoor Unit ..................316 1.2 Indoor Unit....................320 2. Wiring Diagrams for Reference............324 2.1 Outdoor Unit ..................324 2.2 Field Wiring ..................329 2.3 Indoor Unit....................332 3. List of Electrical and Functional Parts ..........348 3.1 Outdoor Unit ..................348 3.2 Indoor Side ...................351 4.

  • Page 327: Piping Diagrams

    Piping Diagrams Si34-601A 1. Piping Diagrams Outdoor Unit RXYQ5PY1 3D050782 Appendix...
  • Page 328 Si34-601A Piping Diagrams RXYQ8P 3D050783 Appendix...
  • Page 329 Piping Diagrams Si34-601A RXYQ10P / 12PY1 3D050784 Appendix...
  • Page 330 Si34-601A Piping Diagrams RXYQ14P / 16P / 18PY1 3D050785 Appendix...

  • Page 331: Indoor Unit

    Piping Diagrams Si34-601A Indoor Unit FXCQ, FXFQ, FXKQ, FXSQ, FXMQ, FXHQ, FXAQ, FXLQ, FXNQ Gas piping connection port Heat exchanger Flare connection : φ15.9 or less Attached piping : Above φ19.1 Liquid piping connection port (Flare connection) Electronic Filter Filter expansion valve DU220-602J Code...
  • Page 332 Si34-601A Piping Diagrams FXZQ Refrigerant pipe connection port diameters (mm) Model Liquid φ12.7 φ6.4 FXZQ20M / 25M / 32M / 40M / 50M Appendix...
  • Page 333 Piping Diagrams Si34-601A FXDQ 4D043864H Refrigerant pipe connection port diameters (mm) Model Liquid FXDQ20N(A), P / 25N(A), P / 32N(A), P / φ12.7 φ6.4 40N(A) / 50N(A)VE(T) φ15.9 φ9.5 FXDQ63N(A)VE(T) FXMQ125MF / 200MF / 250MFV1 4D018650B Refrigerant pipe connection port diameters (mm) Model Liquid...
  • Page 334 Si34-601A Piping Diagrams FXUQ + BEVQ Indoor unit 4D037995F Connection Unit 4D034127B Appendix...

  • Page 335: Wiring Diagrams For Reference

    Wiring Diagrams for Reference Si34-601A 2. Wiring Diagrams for Reference Outdoor Unit RXYQ5PY1 Appendix...
  • Page 336 Si34-601A Wiring Diagrams for Reference RXYQ8PY1 Appendix...
  • Page 337 Wiring Diagrams for Reference Si34-601A RXYQ10PY1 Appendix...
  • Page 338 Si34-601A Wiring Diagrams for Reference RXYQ12PY1 Appendix...
  • Page 339 Wiring Diagrams for Reference Si34-601A RXYQ14P / 16P / 18PY1 Appendix...

  • Page 340: Field Wiring

    Si34-601A Wiring Diagrams for Reference Field Wiring RXYQ5P / 8P / 10P / 12P / 14P / 16P / 18PY1 Appendix...
  • Page 341 Wiring Diagrams for Reference Si34-601A RXYQ20P / 22P / 24P / 26P / 28P / 30P / 32PY1 Appendix...
  • Page 342 Si34-601A Wiring Diagrams for Reference RXYQ34P / 36P / 38P / 40P / 42P / 44P / 46P / 48P / 50P / 52P / 54PY1 Appendix...

  • Page 343: Indoor Unit

    Wiring Diagrams for Reference Si34-601A Indoor Unit FXCQ20M / 25M / 32M / 63MVE Appendix...
  • Page 344 Si34-601A Wiring Diagrams for Reference FXCQ40M / 50M / 80M/ 125MVE Appendix...
  • Page 345 Wiring Diagrams for Reference Si34-601A FXFQ25M / 32M / 40M / 50M / 63M / 80M / 100M / 125MVE Appendix...
  • Page 346 Si34-601A Wiring Diagrams for Reference FXZQ20M / 25M / 32M / 40M / 50M7V1B Appendix...
  • Page 347 Wiring Diagrams for Reference Si34-601A FXKQ25MA / 32MA / 40MA / 63MAVE Appendix...
  • Page 348 Si34-601A Wiring Diagrams for Reference FXDQ20P / 25P / 32P FXDQ20NA / 25NA / 32NA / 40NA / 50NA / 63NAVE (with Drain Pump) Appendix...
  • Page 349 Wiring Diagrams for Reference Si34-601A FXDQ20P / 25P / 32P FXDQ20N / 25N / 32N / 40N / 50N / 63NVET (without Drain Pump) Appendix...
  • Page 350 Si34-601A Wiring Diagrams for Reference FXSQ20M / 25M / 32M / 40M / 50M / 63M / 80M / 100M / 125MVE Appendix...
  • Page 351 Wiring Diagrams for Reference Si34-601A FXMQ40MA / 50MA / 63MA / 80MA / 100MA / 125MAVE Appendix...
  • Page 352 Si34-601A Wiring Diagrams for Reference FXMQ200MA / 250MAVE Appendix...
  • Page 353 Wiring Diagrams for Reference Si34-601A FXHQ32MA / 63MA / 100MAVE Appendix...
  • Page 354 Si34-601A Wiring Diagrams for Reference FXAQ20MA / 25MA / 32MAVE / 40MA / 50MA / 63MAVE Appendix...
  • Page 355 Wiring Diagrams for Reference Si34-601A FXLQ20MA / 25MA / 32MA / 40MA / 50MA / 63MAVE FXNQ20MA / 25MA / 32MA / 40MA / 50MA / 63MAVE Appendix...
  • Page 356 Si34-601A Wiring Diagrams for Reference FXUQ71MA / 100MA / 125MAV1 Appendix...
  • Page 357 Wiring Diagrams for Reference Si34-601A FXMQ125MF / 200MF / 250MFV1 3D044996C Appendix...
  • Page 358 Si34-601A Wiring Diagrams for Reference BEVQ71MA / 100MA / 125MAVE 3D044901B Appendix...

  • Page 359: List Of Electrical And Functional Parts

    List of Electrical and Functional Parts Si34-601A List of Electrical and Functional Parts Outdoor Unit 3.1.1 RXYQ5PY1~8PY1 Model Item Name Symbol RXYQ5PY1 RXYQ8PY1 Type JT1GCVDKYR@S Inverter OC protection 14.7A device Type Compressor STD 1 — OC protection device Type STD 2 —...
  • Page 360 Si34-601A List of Electrical and Functional Parts 3.1.2 RXYQ10PY1~12PY1 Model Item Name Symbol RXYQ10PY1 RXYQ12PY1 Type JT1GCVDKYR@S Inverter OC protection 14.7A device Type JT170G-KYE@T Compressor STD 1 OC protection 15.0A device Type STD 2 — OC protection device OC protection Fan motor device (for General overseas : 1.14A)
  • Page 361 List of Electrical and Functional Parts Si34-601A Model Item Name Symbol RXYQ14PY1 RXYQ16PY1 RXYQ18PY1 Type JT1GCVDKYR@S 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 1.14A device...

  • Page 362: Indoor Side

    Si34-601A List of Electrical and Functional Parts Indoor Side 3.2.1 Indoor Unit Model Parts Name Symbol Remark FXFQ25 FXFQ32 FXFQ40 FXFQ50 FXFQ63 FXFQ80 FXFQ100 FXFQ125 Wired Remote BRC1C62 Controller Remote Option Controller Wireless Remote BRC7E61W Controller Fan Motor DC380V 30W 8P DC 380V 120W 8P AC220-240V (50Hz) AC220V (60Hz) Drain Pump...
  • Page 363 List of Electrical and Functional Parts Si34-601A Model Parts Name Symbol Remark FXKQ FXKQ FXKQ FXKQ 25MAVE 32MAVE 40MAVE 63MAVE Wired Remote BRC1C62 Option Controller Remote Controller Wireless Remote BRC4C61 Controller AC 220~240V 50Hz 1φ15W 4P 1φ20W 4P 1φ45W 4P Fan Motor Thermal protector 120°C : OFF 105°C :...
  • Page 364 Si34-601A List of Electrical and Functional Parts Model Parts Name Symbol Remark FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ 20MVE 25MVE 32MVE 40MVE 50MVE 63MVE 80MVE 100MVE 125MVE Wired Remote BRC1C62 Controller Remote Option Controller Wireless Remote BRC4C62 Controller AC 220~240V 50Hz 1φ125...
  • Page 365 List of Electrical and Functional Parts Si34-601A Model Parts Name Symbol Remark FXHQ FXHQ FXHQ 32MAVE 63MAVE 100MAVE Wired Remote BRC1C62 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 366 Si34-601A 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 BRC1C62 Controller Remote Option Controller Wireless Remote BRC4C62 Controller AC 220~240V 50Hz Fan Motor 1φ15W 1φ25W 1φ35W...
  • Page 367 List of Electrical and Functional Parts Si34-601A Model Parts Name Symbol Remark FXUQ71MAV1 FXUQ100MAV1 FXUQ125MAV1 Wired Remote BRC1C62 Controller Remote Option Controller Wireless Remote BRC7C528W Controller AC 220~240V 50Hz 1φ45W 1φ90W Fan Motor Thermal protector 130°C : OFF 83°C : ON Thermal protector 130°C Motors AC220-240V (50Hz) AC220V (60Hz)

  • Page 368: Option List

    Si34-601A Option List Option List Option List of Controllers Operation Control System Optional Accessories Type FXDQ-N(A) FXLQ-MA FXCQ-M FXFQ-M FXKQ-MA FXUQ-M FXSQ-M FXMQ-MA FXHQ-MA FXAQ-MA FXDQ-P FXNQ-MA Item Wireless BRC7C62 BRC7E61W BRC4C61 BRC4C62 BRC7C528W BRC4C62 BRC7E63W BRC7E618 BRC4C62 Remote controller Wired BRC1C62 Wired remote controller...
  • Page 369 Option List Si34-601A Building management system Part name Model No. Function intelligent • Air-Conditioning management system that can be controlled by a basic Hardware Touch DCS601C51 compact all-in-one unit. Controller DIII-NET Hardware plus DCS601A52 • Additional 64 groups (10 outdoor units) is possible. adaptor Option P.P.D.

  • Page 370: Option Lists (Outdoor Unit)

    Si34-601A Option List Option Lists (Outdoor Unit) RXYQ5 ~ 18PY1 RXYQ12PY1 RXYQ12PY1E RXYQ8PY1 RXYQ8PY1E RXYQ14PY1 RXYQ14PY1E Optional accessories RXYQ5PY1 RXYQ5PY1E RXYQ10PY1 RXYQ10PY1E RXYQ16PY1 RXYQ16PY1E RXYQ18PY1 RXYQ18PY1E Cool/Heat Selector KRC19-26A Fixing box KJB111A KHRP26M22H, KHRP26M22H, KHRP26M33H, KHRP26M22H (Max. 4 branch) (Max. 4 branch) (Max. 8 branch) Refnet header (Max.
  • Page 371 Option List Si34-601A RXYQ16 ~ 18PHY1 RXYQ16PHY1 RXYQ16PHY1E Optional accessories RXYQ18PHY1 RXYQ18PHY1E Cool/Heat Selector KRC19-26A Fixing box KJB111A KHRP26M22H, KHRP26M33H, (Max. 4 branch) (Max. 8 branch) Refnet header KHRP26M72H (Max. 8 branch) Refnet joint KHRP26A22T, KHRP26A33T, KHRP26A72T Outdoor unit multi connection piping kit BHFP22P100 KWC26C280 ×...

  • Page 372: Piping Installation Point

    Si34-601A 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 373: The Example Of A Wrong Pattern

    Piping Installation Point Si34-601A 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 374: Example Of Connection (R-410A Type)

    Si34-601A Example of connection (R-410A Type) 6. Example of connection (R-410A Type) Example refrigerant branch using REFNET joint Example refrigerant branch using REFNET joint and REFNET header Example refrigerant branch using REFNET header Example of connection (Connection of 8 indoor units) Outdoor unit REFNET header REFNET joint (A •...
  • Page 375 Example of connection (R-410A Type) Si34-601A ∗Note 1 When the equivalent pipe length between outdoor and indoor units is 90m or more, the size of main pipes (both gas-side and liquid-side) must be increased. Depending on the length of the piping, the capacity may drop, but even in such case it is able to increase the size of main pipes. The first refrigerant branch kit Outdoor unit Indoor unit...

  • Page 376: Thermistor Resistance / Temperature Characteristics

    Si34-601A 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 377 Thermistor Resistance / Temperature Characteristics Si34-601A 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 378: Pressure Sensor

    Si34-601A 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 379: Method Of Checking The Inverter's Power Transistors And Diode Modules

    Method of Checking The Inverter’s Power Transistors and Diode Modules Si34-601A 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 380 Si34-601A 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 381 Method of Checking The Inverter’s Power Transistors and Diode Modules Si34-601A Appendix...

  • Page 382: Part 8 Precautions For New Refrigerant (R-410A)

    Si34-601A Part 8 Precautions for New Refrigerant (R-410A) 1. Precautions for New Refrigerant (R-410A) .........372 1.1 Outline ....................372 1.2 Refrigerant Cylinders................374 1.3 Service Tools..................375 Precautions for New Refrigerant (R-410A)

  • Page 383: Precautions For New Refrigerant (R-410A)

    Precautions for New Refrigerant (R-410A) Si34-601A 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 384 Si34-601A 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 385: Refrigerant Cylinders

    Precautions for New Refrigerant (R-410A) Si34-601A Refrigerant Cylinders Cylinder specifications 2 The cylinder is painted refrigerant color (pink). 2 The cylinder valve is equipped with a siphon tube. Cylinder Refrigerant can be charged in liquid state with cylinder in upright position. Caution: Do not lay cylinder on its side during charging, since it cause refrigerant in gas state to enter the system.

  • Page 386: Service Tools

    Si34-601A 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 387 Precautions for New Refrigerant (R-410A) Si34-601A 1. Flaring tool Flare gauge Specifications 2 Dimension A Unit:mm Tube O.D. −0.4 Nominal size Class-2 (R-410A) Class-1 (Conventional) 6.35 9.52 13.2 13.0 12.70 16.6 16.2 15.88 19.7 19.4 19.05 24.0 23.3 Differences 2 Change of dimension A Dimension A For class-1: R-407C For class-2: R-410A...
  • Page 388 Si34-601A Precautions for New Refrigerant (R-410A) 2. Torque wrench Specifications 2 Dimension B Unit:mm Nominal size Class-1 Class-2 Previous No change in tightening torque No change in pipes of other sizes Differences 2 Change of dimension B Only 1/2", 5/8" are extended For class-1: R-407C For class-2: R-410A Dimension B...
  • Page 389 Precautions for New Refrigerant (R-410A) Si34-601A 4. Leak tester Specifications 2 Hydrogen detecting type, etc. 2 Applicable refrigerants R-410A, R-407C, R-404A, R-507A, R-134a, etc. Differences 2 Previous testers detected chlorine. Since HFCs do not contain chlorine, new tester detects hydrogen. 5.
  • Page 390 Si34-601A Precautions for New Refrigerant (R-410A) 2 Temperature scale indicates the relationship between pressure and temperature in gas saturated state. Differences 2 Change in pressure 2 Change in service port diameter 7. Charge hose for R-410A (Hose with ball valve) Specifications 2 Working pressure 5.08 MPa (51.8 kg/cm 2 Rupture pressure 25.4 MPa (259 kg/cm...
  • Page 391 Precautions for New Refrigerant (R-410A) Si34-601A 9. Weigher for refrigerant charge Specifications 2 High accuracy TA101A (for 10-kg cylinder) = ± 2g TA101B (for 20-kg cylinder) = ± 5g 2 Equipped with pressure-resistant sight glass to check liquid refrigerant charging. 2 A manifold with separate ports for HFCs and previous refrigerants is equipped as standard accessories.

  • Page 392: Index

    Si34-601A Index E9 ................ 246 Electronic Expansion Valve PI Control ....107 A0 .................220 Emergency Operation ......... 124 A1 .................221 Error of External Protection Device ..... 220 A3 .................222 A6 .................224 A7 .................225 F3 ................ 248 A9 .................227 F6 ................ 249 Abnormal Discharge Pipe Temperature ....248 Fan Motor (M1F) Lock, Overload ......
  • Page 393 Si34-601A L5 .................262 Malfunction of Transmission Between Optional L8 .................264 Controllers for Centralized Control ....298 L9 .................266 Malfunction of Transmission Between LC .................268 Outdoor Units ..........284 List of Electrical and Functional Parts ....348 Malfunction of Transmission Between Remote Indoor Unit .............351 Controller and Indoor Unit ......
  • Page 394 Si34-601A Setting of Low Noise Operation and Demand Operation ............191 Special Control .............109 Specifications ............12 Indoor Units .............33 Outdoor Units ..........12 Standby ..............115 Startup Control .............109 STD Compressor Overload Protection ....122 Step Control of Outdoor Unit Fans .......107 Stopping Operation ..........116 Symptom-based Troubleshooting ......201 System is not Set yet ...........294 Test Operation .............144...
  • Page 395 Si34-601A Index...

  • Page 396: Drawings & Flow Charts

    Si34-601A Drawings & Flow Charts Field Setting from Outdoor Unit ......174 Mode changing procedure ......178 Abnormal Discharge Pipe Temperature ....248 Setting by dip switches ......... 176 Abnormal Outdoor Fan Motor Signal ....250 Freeze Prevention ..........136 Actuation of High Pressure Switch .......236 Functional Parts Layout ........
  • Page 397 Si34-601A Malfunction of Thermistor (R4T) Simplified Remote Controller ......163 for Outdoor Unit Heat Exchanger ....255 BRC2A51, BRC2C51 ........163 Malfunction of Thermostat Sensor in Remote System is not Set yet .......... 294 Controller ............234 Malfunction of Transmission Between Centralized Controller and Indoor Unit ......291 Test Operation ............
  • Page 398 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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