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Daikin VRV II RXYQ5MATL Service Manual

R-410a heat pump 60hz
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Si39 - 504
RXYQ5-48MAYL(E), TL(E)
R-410A Heat Pump 60Hz

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Summary of Contents for Daikin VRV II RXYQ5MATL

  • Page 1 Si39 - 504 RXYQ5-48MAYL(E), TL(E) R-410A Heat Pump 60Hz...

  • Page 2: Table Of Contents

    Si39-504 R-410A Heat Pump 60Hz 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 Si39-504 Pump-down Residual Operation ............81 3.5 Standby ....................82 Stopping Operation ................83 Pressure Equalization prior to Startup............85 Protection Control .................86 High Pressure Protection Control............86 Low Pressure Protection Control............87 Discharge Pipe Protection Control ............88 Inverter Protection Control ..............89 STD Compressor Overload Protection...........90 4.6 Injection Control (only for RXYQ5MA)............90 Other Control..................91 Outdoor Unit Rotation................91...
  • Page 4 Si39-504 3.5 “A7” Indoor Unit: Malfunction of Swing Flap Motor (MA) .......175 3.6 “A9” Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (20E) ............177 3.7 “AF” Indoor Unit: Drain Level above Limit..........179 3.8 “AJ” Indoor Unit: Malfunction of Capacity Determination Device ..180 3.9 “C4”...
  • Page 5 Si39-504 3.44 “U5” Indoor Unit: Malfunction of Transmission Between Remote Controller and Indoor Unit............221 3.45 “U7” Indoor Unit: Malfunction of Transmission Between Outdoor Units ..................222 3.46 “U8” Indoor Unit: Malfunction of Transmission Between Main and Sub Remote Controllers ............224 3.47 “U9” Indoor Unit: Malfunction of Transmission Between Indoor and Outdoor Units in the Same System........225 3.48 “UA”...
  • Page 6 Si39-504 5.1 Piping Installation Point ................295 The Example of A Wrong Pattern............296 6. Selection of Pipe Size, Joints and Header ..........297 Thermistor Resistance / Temperature Characteristics......299 Pressure Sensor .................301 Method of Replacing The Inverter’s Power Transistors and Diode Modules ..................302 Part 8 Precautions for New Refrigerant (R-410A) ....

  • Page 7: Introduction

    Introduction Si39-504 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 Si39-504 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 Si39-504 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 Si39-504 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 VRVII 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

    Si39-504 Part 1 General Information 1. Model Names of Indoor/Outdoor Units............2 2. External Appearance................3 2.1 Indoor Units ....................3 2.2 Outdoor Units ...................4 3. Combination of Outdoor Units..............5 4. Model Selection..................6 General Information...

  • Page 13: Model Names Of Indoor/Outdoor Units

    Model Names of Indoor/Outdoor Units Si39-504 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) Ceiling Mounted FXKQ...

  • Page 14: External Appearance

    Si39-504 External Appearance 2. External Appearance Indoor Units Ceiling Mounted Cassette Type (Double Flow) Ceiling Mounted Duct Type FXMQ40M FXCQ20M FXCQ25M FXMQ50M FXCQ32M FXMQ63M FXCQ40M FXMQ80M FXCQ50M FXMQ100M FXCQ63M FXMQ40~125M FXCQ80M FXMQ125M FXCQ125M FXMQ200M FXMQ250M FXMQ200 · 250M Ceiling Mounted Cassette Type (Multi Flow) Ceiling Suspended Type FXFQ25M FXHQ32M...

  • Page 15: Outdoor Units

    External Appearance Si39-504 Outdoor Units RXYQ5MA RXYQ8MA, 10MA RXYQ12MA, 14MA, 16MA 8,10HP 12,14,16HP RXYQ18MA, 20MA RXYQ22MA, 24MA, 26MA 18, 20HP 22, 24, 26HP RXYQ28MA, 30MA, 32MA RXYQ34MA, 36MA 28, 30, 32HP 34, 36HP RXYQ38MA, 40MA, 42MA RXYQ44MA, 46MA, 48MA 38, 40, 42HP 44, 46, 48HP General Information...

  • Page 16: Combination Of Outdoor Units

    Heat Pump: BHFP22MA90 26HP 28HP 30HP 32HP 34HP 36HP 38HP 40HP Heat Pump: BHFP22MA135 42HP 44HP 46HP 48HP Note: For multiple connection of 18HP system or more, an optional Daikin Outdoor Unit Multi Connection Piping Kit is required. General Information...

  • Page 17: Model Selection

    Model Selection Si39-504 4. Model Selection VRV II Heat Pump Series Connectable indoor units number and capacity 10HP 12HP 14HP 16HP System name RXYQ5MA RXYQ8MA RXYQ10MA RXYQ12MA RXYQ14MA RXYQ16MA Outdoor unit 1 RXYQ5MA RXYQ8MA RXYQ10MA RXYQ12MA RXYQ14MA RXYQ16MA Outdoor unit 2 –...
  • Page 18 Si39-504 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) Ceiling Mounted FXKQ — — — —...
  • Page 19 Model Selection Si39-504 Differences from Conventional Models Differences Item Object New model (MA Model) Conventional model (M Model) NONE Compressor Connection of equalizer oil pipe (No particular changes in terms of service) Equalizer oil pipe for multi- NONE outdoor-unit system Refilling quantity due to piping Refilling quantity due to piping Workability...

  • Page 20: Part 2 Specifications

    Si39-504 Part 2 Specifications Specifications ..................10 Outdoor Units ..................10 Indoor Units ....................21 Specifications...

  • Page 21: Specifications

    Specifications Si39-504 Specifications Outdoor Units RXYQ5MAYL(E) RXYQ8MAYL(E) Model Name RXYQ5MATL(E) RXYQ8MATL(E) kcal / h 12,100 21,800 1 Cooling Capacity (19.5°CWB) Btu / h 48,100 86,700 14.1 25.4 2 Cooling Capacity (19.0°CWB) 14.0 25.2 kcal / h 13,800 24,400 3 Heating Capacity Btu / h 54,600 97,000...
  • Page 22 Si39-504 Specifications RXYQ10MAYL(E) RXYQ12MAYL(E) Model Name RXYQ10MATL(E) RXYQ12MATL(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 27,000 32,300 3 Heating Capacity Btu / h 107,000 128,000 31.5...
  • Page 23 Specifications Si39-504 RXYQ14MAYL(E) RXYQ16MAYL(E) Model Name RXYQ14MATL(E) RXYQ16MATL(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 24 Si39-504 Specifications RXYQ18MAYL(E) RXYQ20MAYL(E) Model Name (Combination Unit) RXYQ18MATL(E) RXYQ20MATL(E) RXYQ8MAYL(E)+RXYQ10MAYL(E) RXYQ10MAYL(E)+RXYQ10MAYL(E) Model Name (Independent Unit) RXYQ8MATL(E)+RXYQ10MATL(E) RXYQ10MATL(E)+RXYQ10MATL(E) kcal / h 46,000 48,400 1 Cooling Capacity (19.5°CWB) Btu / h 183,000 192,000 53.5 56.3 2 Cooling Capacity (19.0°CWB) 53.2 56.0 kcal / h 51,500 54,200...
  • Page 25 Specifications Si39-504 RXYQ22MAYL(E) RXYQ24MAYL(E) Model Name (Combination Unit) RXYQ22MATL(E) RXYQ24MATL(E) RXYQ10MAYL(E)+RXYQ12MAYL(E) RXYQ10MAYL(E)+RXYQ14MAYL(E) Model Name (Independent Unit) RXYQ10MATL(E)+RXYQ12MATL(E) RXYQ10MATL(E)+RXYQ14MATL(E) kcal / h 53,200 58,800 1 Cooling Capacity (19.5°CWB) Btu / h 211,000 233,000 61.9 68.4 2 Cooling Capacity (19.0°CWB) 61.5 68.0 kcal / h 59,300 65,800...
  • Page 26 Si39-504 Specifications RXYQ26MAYL(E) RXYQ28MAYL(E) Model Name (Combination Unit) RXYQ26MATL(E) RXYQ28MATL(E) RXYQ10MAYL(E)+RXYQ16MAYL(E) RXYQ12MAYL(E)+RXYQ16MAYL(E) Model Name (Independent Unit) RXYQ10MATL(E)+RXYQ16MATL(E) RXYQ12MATL(E)+RXYQ16MATL(E) kcal / h 63,100 68,000 1 Cooling Capacity (19.5°CWB) Btu / h 250,000 270,000 73.4 79.0 2 Cooling Capacity (19.0°CWB) 73.0 78.5 kcal / h 70,000 75,300...
  • Page 27 Specifications Si39-504 RXYQ30MAYL(E) RXYQ32MAYL(E) Model Name (Combination Unit) RXYQ30MATL(E) RXYQ32MATL(E) RXYQ14MAYL(E)+RXYQ16MAYL(E) RXYQ16MAYL(E)+RXYQ16MAYL(E) Model Name (Independent Unit) RXYQ14MATL(E)+RXYQ16MATL(E) RXYQ16MATL(E)+RXYQ16MATL(E) kcal / h 73,500 77,800 1 Cooling Capacity (19.5°CWB) Btu / h 292,000 309,000 85.5 90.5 2 Cooling Capacity (19.0°CWB) 85.0 90.0 kcal / h 81,700 86,000...
  • Page 28 Si39-504 Specifications RXYQ34MAYL(E) RXYQ36MAYL(E) Model Name (Combination Unit) RXYQ34MATL(E) RXYQ36MATL(E) RXYQ10MAYL(E)+RXYQ10MAYL(E)+RXYQ14MAYL(E) RXYQ10MAYL(E)+RXYQ10MAYL(E)+RXYQ16MAYL(E) Model Name (Independent Unit) RXYQ10MATL(E)+RXYQ10MATL(E)+RXYQ14MATL(E) RXYQ10MATL(E)+RXYQ10MATL(E)+RXYQ16MATL(E) kcal / h 83,100 87,700 1 Cooling Capacity (19.5°CWB) Btu / h 330,000 348,000 96.6 2 Cooling Capacity (19.0°CWB) 96.0 kcal / h 92,900 97,200 3 Heating Capacity...
  • Page 29 Specifications Si39-504 RXYQ38MAYL(E) RXYQ40MAYL(E) Model Name (Combination Unit) RXYQ38MATL(E) RXYQ40MATL(E) RXYQ10MAYL(E)+RXYQ12MAYL(E)+RXYQ16MAYL(E) RXYQ10MAYL(E)+RXYQ14MAYL(E)+RXYQ16MAYL(E) Model Name (Independent Unit) RXYQ10MATL(E)+RXYQ12MATL(E)+RXYQ16MATL(E) RXYQ10MATL(E)+RXYQ14MATL(E)+RXYQ16MATL(E) kcal / h 92,900 98,000 1 Cooling Capacity (19.5°CWB) Btu / h 368,000 389,000 2 Cooling Capacity (19.0°CWB) kcal / h 102,000 109,000 3 Heating Capacity Btu / h...
  • Page 30 Si39-504 Specifications RXYQ42MAYL(E) RXYQ44MAYL(E) Model Name (Combination Unit) RXYQ42MATL(E) RXYQ44MATL(E) RXYQ10MAYL(E)+RXYQ16MAYL(E)+RXYQ16MAYL(E) RXYQ12MAYL(E)+RXYQ16MAYL(E)+RXYQ16MAYL(E) Model Name (Independent Unit) RXYQ10MATL(E)+RXYQ16MATL(E)+RXYQ16MATL(E) RXYQ12MATL(E)+RXYQ16MATL(E)+RXYQ16MATL(E) kcal / h 102,000 108,000 1 Cooling Capacity (19.5°CWB) Btu / h 406,000 427,000 2 Cooling Capacity (19.0°CWB) kcal / h 114,000 119,000 3 Heating Capacity Btu / h...
  • Page 31 Specifications Si39-504 RXYQ46MAYL(E) RXYQ48MAYL(E) Model Name (Combination Unit) RXYQ46MATL(E) RXYQ48MATL(E) RXYQ14MAYL(E)+RXYQ16MAYL(E)+RXYQ16MAYL(E) RXYQ16MAYL(E)+RXYQ16MAYL(E)+RXYQ16MAYL(E) Model Name (Independent Unit) RXYQ14MATL(E)+RXYQ16MATL(E)+RXYQ16MATL(E) RXYQ16MATL(E)+RXYQ16MATL(E)+RXYQ16MATL(E) kcal / h 113,000 117,000 1 Cooling Capacity (19.5°CWB) Btu / h 447,000 464,000 2 Cooling Capacity (19.0°CWB) kcal / h 125,000 129,000 3 Heating Capacity Btu / h...

  • Page 32: Indoor Units

    Si39-504 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 3 Heating Capacity Btu/h 8,500 10,900...
  • Page 33 Specifications Si39-504 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 3 Heating Capacity Btu/h 21,500 27,300...
  • Page 34 Si39-504 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 17,100 21,500...
  • Page 35 Specifications Si39-504 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 3 Heating Capacity Btu/h 27,300 34,100...
  • Page 36 Si39-504 Specifications Ceiling Mounted Cassette Corner Type Model FXKQ25MVE FXKQ32MVE FXKQ40MVE FXKQ63MVE 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 17,100 27,300...
  • Page 37 Specifications Si39-504 Slim Ceiling Mounted Duct Type (with Drain Pump) Model FXDQ20NVE FXDQ25NVE FXDQ32NVE 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...
  • Page 38 Si39-504 Specifications Slim Ceiling Mounted Duct Type (with Drain Pump) Model FXDQ40NVE FXDQ50NVE FXDQ63NVE 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...
  • Page 39 Specifications Si39-504 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 13,600 Casing Galvanized Steel Plate...
  • Page 40 Si39-504 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 27,300 Casing Color Galvanized Steel Plate...
  • Page 41 Specifications Si39-504 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 Galvanized Steel Plate Dimensions: (H×W×D)
  • Page 42 Si39-504 Specifications 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 Galvanized Steel Plate Dimensions: (H×W×D)
  • Page 43 Specifications Si39-504 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 54,600 10.0 12.5...
  • Page 44 Si39-504 Specifications Ceiling Mounted Duct Type Model FXMQ40MVE FXMQ50MVE FXMQ63MVE FXMQ80MVE 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 27,300 34,100 10.0...
  • Page 45 Specifications Si39-504 Ceiling Mounted Duct Type Model FXMQ100MVE FXMQ125MVE FXMQ200MVE FXMQ250MVE 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 27,100 3 Heating Capacity...

  • Page 46: Ceiling Suspended Type

    Si39-504 Specifications Ceiling Suspended Type Model FXHQ32MVE FXHQ63MVE FXHQ100MVE 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 White (10Y9/0.5) White (10Y9/0.5) White (10Y9/0.5)
  • Page 47 Specifications Si39-504 Wall Mounted Type Model FXAQ20MVE FXAQ25MVE FXAQ32MVE 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) Dimensions: (H×W×D)
  • Page 48 Si39-504 Specifications Wall Mounted Type Model FXAQ40MVE FXAQ50MVE FXAQ63MVE 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) Dimensions: (H×W×D)

  • Page 49: Floor Standing Type

    Specifications Si39-504 Floor Standing Type Model FXLQ20MVE FXLQ25MVE FXLQ32MVE 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) Dimensions: (H×W×D)
  • Page 50 Si39-504 Specifications Floor Standing Type Model FXLQ40MVE FXLQ50MVE FXLQ63MVE 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) Dimensions: (H×W×D)
  • Page 51 Specifications Si39-504 Concealed Floor Standing Type Model FXNQ20MVE FXNQ25MVE FXNQ32MVE 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 Galvanized Steel Plate Dimensions: (H×W×D)
  • Page 52 Si39-504 Specifications Concealed Floor Standing Type Model FXNQ40MVE FXNQ50MVE FXNQ63MVE 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 Galvanized Steel Plate Dimensions: (H×W×D)
  • Page 53 Specifications Si39-504 Specifications...

  • Page 54: Part 3 Refrigerant Circuit

    Si39-504 Part 3 Refrigerant Circuit Refrigerant Circuit .................44 RXYQ5MA .....................44 RXYQ8MA, 10MA, 12MA ..............46 RXYQ14MA, 16MA ................48 Functional Parts Layout ................50 RXYQ5MA....................50 RXYQ8MA, 10MA, 12MA ...............51 RXYQ14MA, 16MA ................52 Refrigerant Flow for Each Operation Mode...........53 Refirgerant Circuit...

  • Page 55: Refrigerant Circuit

    Refrigerant Circuit Si39-504 Refrigerant Circuit RXYQ5MA No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 52 Hz and 210 Hz by using the inverter. The number of operating steps is as follows when Inverter compressor is Inverter compressor (INV) operated.
  • Page 56 Si39-504 Refrigerant Circuit RXYQ5MA 3D048203 Refirgerant Circuit...

  • Page 57: Rxyq8Ma, 10Ma, 12Ma

    Refrigerant Circuit Si39-504 RXYQ8MA, 10MA, 12MA No. in refrigerant Symbol Name Major Function system diagram Inverter compressor (INV) Inverter compressor is operated on frequencies between 52 Hz and 210 Hz by using the inverter, while Standard compressor is operated with commercial power supply only.
  • Page 58 Si39-504 Refrigerant Circuit RXYQ8MA, 10MA, 12MA 3D048033A Refirgerant Circuit...

  • Page 59: Rxyq14Ma, 16Ma

    Refrigerant Circuit Si39-504 RXYQ14MA, 16MA No. in refrigerant Symbol Name Major Function system diagram Inverter compressor (INV) Inverter compressor is operated on frequencies between 52 Hz and 210 Hz by using Standard compressor 1 the inverter, while Standard compressor is operated with commercial power supply (STD1) only.
  • Page 60 Si39-504 Refrigerant Circuit RXYQ14MA, 16MA 3D048034A Refirgerant Circuit...

  • Page 61: Functional Parts Layout

    Functional Parts Layout Si39-504 Functional Parts Layout RXYQ5MA Plan Solenoid valve (Injection)Y4S High pressure switch (High pressure protection INV)S1PH Solenoid valve (Receiver gas discharging)Y2S Solenoid valve (Hot gas bypass)Y1S Thermistor (INV discharge pipe)R3T Front View Fan motor Pressure sensor (High pressure)S1NPH 4-way valve Electronic expansion valve coil Thermistor...

  • Page 62: Rxyq8Ma, 10Ma, 12Ma

    Si39-504 Functional Parts Layout RXYQ8MA, 10MA, 12MA Plan Solenoid valve (Hot gas bypass)Y1S Thermistor High pressure switch High pressure switch Thermistor (Discharge pipe M1C)R31T (High pressure protection)S1PH (High pressure protection)S2PH (Discharge pipe M2C)R32T Front View Fan motor Solenoid valve (Receiver gas discharging)Y2S Thermistor (Receiver outlet liquid pipe)R6T Pressure sensor...

  • Page 63: Rxyq14Ma, 16Ma

    Functional Parts Layout Si39-504 RXYQ14MA, 16MA Plan Solenoid valve (Hot gas bypass)Y1S High presure switch (High pressure protection)S3PH High pressure switch Thermistor High pressure switch Thermistor Thermistor (High pressure (Discharge pipe (Discharge pipe M3C)R33T (Discharge pipe M1C)R31T (High pressure protection)S2PH M2C)R32T protection)S1PH Front View...

  • Page 64: Refrigerant Flow For Each Operation Mode

    Si39-504 Refrigerant Flow for Each Operation Mode Refrigerant Flow for Each Operation Mode RXYQ5MA 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 65 Refrigerant Flow for Each Operation Mode Si39-504 Cooling Oil Return Operation Indoor unit operation Fan ON Fan OFF " OFF " Fan OFF " ON " " ON " Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure gas" "High temperature, high pressure liquid"...
  • Page 66 Si39-504 Refrigerant Flow for Each Operation Mode 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 67 Refrigerant Flow for Each Operation Mode Si39-504 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 68 Si39-504 Refrigerant Flow for Each Operation Mode RXYQ8MA, 10MA, 12MA 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 69 Refrigerant Flow for Each Operation Mode Si39-504 Cooling Oil Return Indoor unit operation Fan ON Fan OFF " OFF " " ON " " ON " Fan OFF "High temperature, high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid" "Low temperature, low pressure"...
  • Page 70 Si39-504 Refrigerant Flow for Each Operation Mode 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 71 Refrigerant Flow for Each Operation Mode Si39-504 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 72 Si39-504 Refrigerant Flow for Each Operation Mode RXYQ14MA, 16MA 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 73 Refrigerant Flow for Each Operation Mode Si39-504 Cooling Oil Return Operation Indoor unit operation Fan ON " ON " " OFF " " ON " Fan OFF Fan OFF "High temperature, high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid"...
  • Page 74 Si39-504 Refrigerant Flow for Each Operation Mode 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 75 Refrigerant Flow for Each Operation Mode Si39-504 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 76: Part 4 Function

    Si39-504 Part 4 Part 4 Part 4 Part 4 Function Function Function Function 1. Function general ...................66 1.1 Symbol ....................66 1.2 Operation Mode..................67 2. Basic Control..................68 2.1 Normal Operation ...................68 2.2 Compressor PI Control................69 2.3 Electronic Expansion Valve PI Control...........75 2.4 Step Control of Outdoor Unit Fans ............75 2.5 Outdoor Unit Fan Control in Cooling Operation ........76 3.

  • Page 77: Function General

    Function general Si39-504 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 78: Operation Mode

    Si39-504 Function general Operation Mode Operation in stop mode Indoor unit stop or Indoor unit thermostat ON thermostat OFF Malfunction/Standby Restart standby Pressure (Compressor stop) equalization prior to startup Malfunction/ Standby Indoor unit stop or thermostat OFF Startup control Pump-down •...

  • Page 79: Basic Control

    Basic Control Si39-504 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 80: Compressor Pi Control

    Si39-504 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 81 Basic Control Si39-504 Operating Priority and Rotation of Compressors Each compressor operates in the following order of priority. INV: Inverter compressor In the case of multi-outdoor-unit system, each compressor operates in any of Pattern 1 STD1: Standard compressor 1 through Pattern 3 according to the rotation of outdoor units. STD2: Standard compressor 2 Pattern 1 Pattern 2...
  • Page 82 Si39-504 Basic Control Compressor Step Control Compressor operations vary with the following steps according to information in "2.2 Compressor PI Control". Furthermore, the operating priority of compressors is subject to information in " Operating Priority and Rotation of Compressors". RXYQ5MA RXYQ8MA,10MA,12MA RXYQ14MA,16MA STEP...
  • Page 83 Basic Control Si39-504 RXYQ18MA, 20MA, 22MA RXYQ24MA, 26MA, 28MA (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 STEP STEP unit unit unit unit unit unit...
  • Page 84 Si39-504 Basic Control RXYQ30MA, 32MA RXYQ34MA, 36MA, 38MA (To increase Step No.) (To decrease Step No.) (To increase Step No.) (To decrease Step No.) Master Slave Master Slave Master Slave Slave Master Slave Slave STEP STEP STEP STEP unit unit unit unit unit...
  • Page 85 Basic Control Si39-504 RXYQ46MA, 48MA RXYQ40MA, 42MA, 44MA (To decrease Step No.) (To increase Step No.) (To decrease Step No.) (To increase Step No.) Master Slave Slave Master Slave Slave Master Slave Slave Master Slave Slave STEP STEP STEP STEP unit unit1 unit2...

  • Page 86: Electronic Expansion Valve Pi Control

    Si39-504 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 87: Outdoor Unit Fan Control In Cooling Operation

    Basic Control Si39-504 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 88: Special Control

    Si39-504 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 89: Oil Return Operation

    Special Control Si39-504 Oil Return Operation In order to prevent the compressor from running out of oil, the oil return operation is conducted to recover oil flown out from the compressor to the system side. 3.2.1 Oil Return Operation in Cooling Operation [Start conditions] Referring to the set conditions for the following items, start the oil return operation in cooling.
  • Page 90 Si39-504 Special Control 3.2.2 Oil Return Operation in Heating Operation Oil return preparation Outdoor Unit Actuator Oil return operation Post-oil-return operation operation 1-step increase from Compressor Upper limit control 124 Hz + ON + OFF (74 Hz + OFF + OFF) to (Pc - Pe>0.4 MPa) time STEP7 Outdoor unit fan...

  • Page 91: Defrosting Operation

    Special Control Si39-504 Defrosting Operation To defrost the outdoor unit heat exchanger while in heating operation, 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 92: Pump-Down Residual Operation

    Si39-504 Special Control Pump-down Residual Operation 3.4.1 Pump-down Residual Operation in Cooling Operation If the liquid refrigerant stays in the heat exchanger 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 heat exchanger while the compressor stops, the pump-down residual operation is conducted.

  • Page 93: Standby

    Special Control Si39-504 Standby 3.5.1 Restart Standby Used to forcedly stop the compressor for a period of five minutes, in order to prevent the frequent ON/OFF of the compressor and equalize the pressure within the refrigerant system. Actuator Operation Remarks ...

  • Page 94: Stopping Operation

    Si39-504 Special Control Stopping Operation 3.6.1 When System is in Stop Mode 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 Hot gas bypass valve (SVP)
  • Page 95 Special Control Si39-504 3.6.3 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 96: Pressure Equalization Prior To Startup

    Si39-504 Special Control Pressure Equalization prior to Startup Actuator Operation Remarks Compressor — Cooling:OFF Outdoor unit fan — Heating:STEP 4 Four way valve Holds — Main motorized valve (EV1) 0 pls — Subcooling motorized valve (EV2) 0 pls — Hot gas bypass valve (SVP) In the case of RXYQ5M, this valve turns ON.

  • Page 97: Protection Control

    Protection Control Si39-504 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] In the case of multi-outdoor-unit system, each outdoor unit performs this control individually in the following sequence.

  • Page 98: Low Pressure Protection Control

    Si39-504 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 99: Discharge Pipe Protection Control

    Protection Control Si39-504 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 100: Inverter Protection Control

    Si39-504 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 101: Std Compressor Overload Protection

    Protection Control Si39-504 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 102: Other Control

    Si39-504 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 103: Emergency Operation

    Other Control Si39-504 Emergency Operation If the compressor cannot operate, this control inhibits any applicable compressor or outdoor unit from operating to perform emergency operation only with the operative compressor or outdoor unit. Caution In order to disable the compressor operation due to a failure or else, be sure to do so in emergency operation mode.
  • Page 104 Si39-504 Other Control convenience of oil equalization. • For RXYQ14MA and 16MA, only the STD1 compressor cannot be put into operation prohibition mode for the convenience of oil equalization. • For the system with a single outdoor unit (RXYQ8MA to 16MA), automatic backup operation is not functional.

  • Page 105: Demand Operation

    Other Control Si39-504 • In order to set the slave unit 1 to operation prohibition mode, set No. 39 of Setting mode 2 to LED display (7:ON :OFF :Blink) "SLAVE 1 OPERATION PROHIBITION". H1P----H7P (Procedure) (1) Press and hold the MODE button (BS1) for a period 7777777 777777 of 5 seconds or more.

  • Page 106: Outline Of Control (Indoor Unit)

    Si39-504 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 107 Outline of Control (Indoor Unit) Si39-504 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 108: Louver Control For Preventing Ceiling Dirt

    Si39-504 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 109: Thermostat Sensor In Remote Controller

    Outline of Control (Indoor Unit) Si39-504 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”.) Cooling If there is a significant difference in the preset temperature and the suction temperature, fine...
  • Page 110 Si39-504 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 111: Thermostat Control While In Normal Operation

    Outline of Control (Indoor Unit) Si39-504 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 112: Freeze Prevention

    Si39-504 Outline of Control (Indoor Unit) 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 113: Heater Control

    Outline of Control (Indoor Unit) Si39-504 Heater Control The heater control is conducted in the following manner. [Normal control] While in heating operation, the heater Set temperature control (ON/OFF) is conducted as shown on the right. 2ºC 2ºC [Overload control] When the system is overloaded in heating operation, the heater will 43ºC...

  • Page 114: List Of Swing Flap Operations

    Si39-504 Outline of Control (Indoor Unit) List of Swing Flap Operations Swing flaps operate as shown in table below. Flap FXCQ FXFQ FXHQ FXAQ FXKQ Swing Horizontal Horizontal Horizontal Hot start from defrosting operation Wind direction set OFF Horizontal Horizontal Horizontal Swing Horizontal...
  • Page 115 Outline of Control (Indoor Unit) Si39-504 Function...

  • Page 116: Part 5 Test Operation

    Si39-504 Part 5 Test Operation Test Operation ..................106 Procedure and Outline .................106 Operation When Power is Turned On ..........110 Outdoor Unit PC Board Layout ............111 Field Setting ..................112 Field Setting from Remote Controller ...........112 3.2 Field Setting from Outdoor Unit............124 Test Operation...

  • Page 117: Test Operation

    Test Operation Si39-504 Test Operation Procedure and Outline Follow the following procedure to conduct the initial test operation after installation. 1.1.1 Check work prior to turn power supply on ¡ Is the wiring performed as specified? ¡ Check the below items. Is the designated wire used? ¡...
  • Page 118 Si39-504 Test Operation 1.1.2 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 119 Test Operation Si39-504 1.1.3 Check Operation * During check operation, mount front panel to avoid the misjudging. * Check operation is mandatory for normal unit operation. (When the check operation is not executed, alarm code "U3" will be displayed.) If the LED "H1P" turns OFF, the system is set to "Setting mode 1". Check Setting mode 1.
  • Page 120 Si39-504 Test Operation Malfunction code In case of an alarm code displayed on remote controller: Cause of trouble due to faulty Alarm Countermeasure installation work code The stop valve of an outdoor unit is left Open the stop valve. closed. The phases of the power to the outdoor Exchange two of the three phases (L1, L2, L3) to make a positive units are reversed.

  • Page 121: Operation When Power Is Turned On

    Test Operation Si39-504 Operation When Power is Turned On 1.2.1 When Turning On Power First Time The unit cannot be run for up to 12 minutes to automatically set the master power and address (indoor-outdoor address, etc.). Status Outdoor unit Test lamp H2P ..

  • Page 122: Outdoor Unit Pc Board Layout

    Si39-504 Outdoor Unit PC Board Layout Outdoor Unit PC Board Layout Outdoor unit PC board C/H SELECTOR (2) Set mode display (LED) TEST: 9 MODE L.N.O.P DEMAND MASTER SLAVE HWL : 8 MULTI H1P H2P H3P H4P H5P H6P H7P (3) Mode setting switch MODE RETURN...

  • Page 123: Field Setting

    Field Setting Si39-504 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 124 Si39-504 Field Setting 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 125 Field Setting Si39-504 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 [BS3] BUTTON ( ) (temperature setting ).
  • Page 126 Si39-504 Field Setting 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 127 Field Setting Si39-504 3.1.5 Applicable range of Field setting Ceiling mounted cassette type Slim Ceiling Ceiling Ceiling Wall Floor Concealed Ceiling mounted mounted suspended mounted standing Floor Multi Double Corner mounted built-in duct type type type type standing flow flow type duct type type...

  • Page 128: Detailed Explanation Of Setting Modes

    Si39-504 Field Setting 3.1.6 Detailed Explanation of Setting Modes Filter Sign Setting If switching the filter sign ON time, set as given in the table below. Set Time Filter Specs. Standard Long Life Ultra Long Life Filter Setting Contamination Light 200 hrs.
  • Page 129 Field Setting Si39-504 Air Flow Adjustment - Ceiling height Make the following setting according to the ceiling height. The setting position No. is set to “01” at the factory. In the Case of FXAQ, FXHQ Setting Switch Setting Position Mode No. Setting Wall-mounted type: Standard 13(23)
  • Page 130 Si39-504 Field Setting Setting of Air Flow Direction Adjustment Range Make the following air flow direction setting according to the respective purpose. Setting Table Mode No. First Code No. Second Code No. Setting Upward (Draft prevention) 13 (23) Standard Downward (Ceiling soiling prevention) Air flow rate switching at discharge grille for field air flow rate switching When the optional parts (high performance filter, etc.) is installed, sets to change fan speed for...
  • Page 131 Field Setting Si39-504 3.1.7 Centralized Control Group No. Setting BRC1A Type Set the group number of each group of the indoor unit from the remote controller. (In case of no remote controller, also connect the remote controller and set the group No. Then, remove the remote controller.) 1.
  • Page 132 Si39-504 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 133 Field Setting Si39-504 3.1.8 Setting of Operation Control Mode from Remote Controller (Local Setting) The operation control mode is compatible with a variety of controls and operations by limiting the functions of the operation remote controller. Furthermore, operations such as remote controller ON/OFF can be limited in accordance with the combination conditions.
  • Page 134 Si39-504 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 135: Field Setting From Outdoor Unit

    Field Setting Si39-504 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 136 Si39-504 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 137 Field Setting Si39-504 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 Cool / Heat select Used to set cool / heat select by remote controller DS1-1 equipped with outdoor unit.
  • Page 138 Si39-504 Field Setting “Detail of DS1-1~4, DS2-1~4 setting” Unit Setting method ( represents the position of switches) HEAT PUMP(5HP) Set DS2-1 to ON. RXYQ5MA HEAT PUMP(8HP) Set DS2-1 and DS2-3 to ON. RXYQ8MA HEAT PUMP(10HP) Set DS2-1, DS2-2 and DS2-3 RXYQ10MA to ON.
  • Page 139 Field Setting Si39-504 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 140 Si39-504 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 141 Field Setting Si39-504 Setting item Description b. “Setting mode 2” Cool/heat unified Sets address for cool/heat unified operation. address Push and hold the MODE (BS1) Low noise/demand Address for low noise/demand operation button for 5 seconds and set to address “Setting mode 2”.
  • Page 142 Si39-504 Field Setting Setting item Description Emergency operation (Setting for the master unit operation prohibition in multi- outdoor-unit system) Emergency operation Used to temporarily prohibit the applicable outdoor unit (Setting for the from operating should there be any faulty part in multi- slave unit 1 outdoor-unit system.
  • Page 143 Field Setting Si39-504 Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set 8777777 ∗ Address Binary number 8777778 Cool / Heat Unified address (6 digits) 8788888 8777777 ∗ Address Binary number 8777778 Low noise/demand address...
  • Page 144 Si39-504 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 8 step or lower) 8777778 8777787 ∗...
  • Page 145 Field Setting Si39-504 c. Monitor mode LED display Setting item Data display To enter the monitor mode, push the 9 7 7 7 7 7 7 Various settings See below MODE (BS1) button when in “Setting mode 1”. 9 7 7 7 7 7 8 C/H unified address 9 7 7 7 7 8 7 Low noise/demand address...
  • Page 146 Si39-504 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 147 Field Setting Si39-504 3.2.2 Cool / Heat Mode Switching There are the following 4 cool/heat switching modes. Set cool/heat separately for each outdoor unit system by indoor unit remote controller. Set cool/heat separately for each outdoor unit system by cool/heat switching remote controller.
  • Page 148 Si39-504 Field Setting Set Cool / Heat Separately for Each Outdoor Unit System by Cool / Heat Switching Remote Controller It does not matter whether or not there is outdoor - outdoor unit wiring. Set outdoor unit PC board DS1-1 to OUT (factory set). Set cool/heat switching to IND (individual) for “Setting mode 1”...
  • Page 149 Field Setting Si39-504 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 150 Si39-504 Field Setting Set Cool / Heat for More Than One Outdoor Unit System Simultaneously in Accordance with Unified Master Outdoor Unit by Cool / Heat Switching Remote Controller Install the external control adapter for outdoor unit on either the outdoor-outdoor, indoor- outdoor transmission line.
  • Page 151 Field Setting Si39-504 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 152 Si39-504 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 153 Field Setting Si39-504 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 154 Si39-504 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 155 Field Setting Si39-504 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 156 Si39-504 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 157 Field Setting Si39-504 : 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 158 Si39-504 Field Setting 3.2.4 Setting of Refrigerant Additional Charging Operation When additional refrigerant is not charged all with outdoor unit in stop mode, operate the outdoor unit and charge the liquid refrigerant from the service port of liquid stop value. The additional charging operation is activated by pushbutton switch on the outdoor unit PC board.
  • Page 159 Field Setting Si39-504 [Operation procedure detail] After turning the respective power supply switch of indoor and outdoor units off and charging the refrigerant, turn on the power of indoor and outdoor units. Do not fail to turn the power off and charge the refrigerant with outdoor unit in stop mode before adding the refrigerant following this procedure, otherwise resulting in trouble.
  • Page 160 Si39-504 Field Setting 3.2.6 Setting of Vacuuming Mode In order to perform vacuuming operation at site, fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves. [Operating procedure] With Setting Mode 2 while the unit stops, set “Refrigerant recovery / Vacuuming mode” to ON.
  • Page 161 Field Setting Si39-504 Test Operation...

  • Page 162: Part 6 Troubleshooting

    Si39-504 Part 6 Part 6 Part 6 Part 6 Troubleshooting Troubleshooting Troubleshooting Troubleshooting 1. Symptom-based Troubleshooting ............154 2. Troubleshooting by Remote Controller ..........157 2.1 The INSPECTION / TEST Button............157 2.2 Self-diagnosis by Wired Remote Controller .........158 2.3 Self-diagnosis by Wireless Remote Controller ........159 2.4 Operation of The Remote Controller’s Inspection / Test Operation Button ................162 2.5 Remote Controller Service Mode ............163...
  • Page 163 Si39-504 3.29 “J9” Outdoor Unit: Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor (R5T) ..............203 3.30 “JA” Outdoor Unit: Malfunction of High Pressure Sensor......204 3.31 “JC” Outdoor Unit: Malfunction of Low Pressure Sensor.......205 3.32 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise.................206 3.33 “L5”...
  • Page 164 Si39-504 6. Troubleshooting (OP: Unified ON/OFF Controller) ......245 6.1 Operation Lamp Blinks .................245 6.2 Display “Under Centralized Control” Blinks (Repeats Single Blink) ..247 6.3 Display “Under Centralized Control” Blinks (Repeats Double Blink) ..250 Troubleshooting...

  • Page 165: Symptom-Based Troubleshooting

    Symptom-based Troubleshooting Si39-504 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 166 Si39-504 Symptom-based Troubleshooting Symptom Supposed Cause Countermeasure The system This symptom occurs The system is in preparation Wait for a period of approximately conducts air immediately after turning ON mode of operation. 10 minutes. blasting the power supply. operation but not cooling or heating operation.
  • Page 167 Symptom-based Troubleshooting Si39-504 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 168: Troubleshooting By Remote Controller

    Si39-504 Troubleshooting by Remote Controller 2. Troubleshooting by Remote Controller The INSPECTION / TEST Button The following modes can be selected by using the [Inspection/Test Operation] button on the remote control. Depress Inspection/Test Operation button for more than 4 seconds. Indoor unit settings can be made Service data can be obtained.

  • Page 169: Self-Diagnosis By Wired Remote Controller

    Troubleshooting by Remote Controller Si39-504 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 170: Self-Diagnosis By Wireless Remote Controller

    Si39-504 Troubleshooting by Remote Controller Self-diagnosis by Wireless Remote Controller In the Case of If equipment stops due to a malfunction, the operation indicating LED on the light reception section flashes. BRC7C Type The malfunction code can be determined by following the procedure described below. (The BRC7E Type malfunction code is displayed when an operation error has occurred.
  • Page 171 Troubleshooting by Remote Controller Si39-504 The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed. Troubleshooting...
  • Page 172 Si39-504 Troubleshooting by Remote Controller Troubleshooting...

  • Page 173: Operation Of The Remote Controller's Inspection / Test Operation Button

    Troubleshooting by Remote Controller Si39-504 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 174: Remote Controller Service Mode

    Si39-504 Troubleshooting by Remote Controller Remote Controller Service Mode How to Enter the Service Mode Service Mode 1. Select the mode No. Operation Set the desired mode No. with the button. (For wireless remote controller, Mode 43 only can be set.) Method 2.
  • Page 175 Troubleshooting by Remote Controller Si39-504 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 176: Remote Controller Self-Diagnosis Function

    Si39-504 Troubleshooting by Remote Controller Remote Controller Self-Diagnosis Function The remote controller switches are equipped with a self diagnosis function so that more appropriate maintenance can be carried out. If a malfunction occurs during operation, the operation lamp, malfunction code and display of malfunctioning unit No. let you know the contents and location of the malfunction.
  • Page 177 Troubleshooting by Remote Controller Si39-504 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 178 Si39-504 Troubleshooting by Remote Controller 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 System...

  • Page 179: Troubleshooting

    Troubleshooting by Remote Controller Si39-504 Malfunction code indication by outdoor unit PC board Monitor mode <Monitor mode> To enter the monitor mode, push the Contents of malfunction Malfunction MODE (BS1) button when in code “Setting mode 1”. Abnormal discharge pressure HPS activated Abnormal suction pressure Abnormal Pe...
  • Page 180 Si39-504 Troubleshooting by Remote Controller 8: ON 7: OFF 9:Blink Malfunction Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 code Malfunction code 1st Malfunction code 2nd Malfunction Master digit display section digit display section location Slave 1 Slave 2 Troubleshooting...

  • Page 181: Troubleshooting By Indication On The Remote Controller

    Troubleshooting by Indication on the Remote Controller Si39-504 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 182: A1" Indoor Unit: Pc Board Defect

    Si39-504 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 183: A3" Indoor Unit: Malfunction Of Drain Level Control System (S1L)

    Troubleshooting by Indication on the Remote Controller Si39-504 “ A3 ” Indoor Unit: Malfunction of Drain Level Control System (S1L) Remote Controller Display Applicable FXCQ, FXFQ, FXSQ, FXKQ, FXDQ, FXMQ, FXHQ (Option), FXMQ200,250M (Option), FXAQ (Option) Models Method of By float switch OFF detection Malfunction Detection Malfunction...
  • Page 184 Si39-504 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 185: A6" Indoor Unit: Fan Motor (M1F) Lock, Overload

    Troubleshooting by Indication on the Remote Controller Si39-504 “ 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 186: A7" Indoor Unit: Malfunction Of Swing Flap Motor (Ma)

    Si39-504 Troubleshooting by Indication on the Remote Controller “ A7 ” Indoor Unit: Malfunction of Swing Flap Motor (MA) 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...
  • Page 187 Troubleshooting by Indication on the Remote Controller Si39-504 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 188: A9" Indoor Unit: Malfunction Of Moving Part Of

    Si39-504 Troubleshooting by Indication on the Remote Controller “ A9 ” Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (20E) 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 189 Troubleshooting by Indication on the Remote Controller Si39-504 ∗1: Coil check method for the moving part of the electronic expansion valve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins. (Normal) Pin No. 1.

  • Page 190: Af" Indoor Unit: Drain Level Above Limit

    Si39-504 Troubleshooting by Indication on the Remote Controller “ AF ” Indoor Unit: Drain Level above Limit Remote Controller Display Applicable FXCQ, FXFQ, FXSQ, FXKQ, FXMQ, FXDQ Models Method of Water leakage is detected based on float switch ON/OFF operation while the compressor is in non-operation.

  • Page 191: Aj" Indoor Unit: Malfunction Of Capacity Determination Device

    Troubleshooting by Indication on the Remote Controller Si39-504 “ 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 192: C4" Indoor Unit: Malfunction Of Thermistor (R2T) For

    Si39-504 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 193: 3.10 " C5 " Indoor Unit

    Troubleshooting by Indication on the Remote Controller Si39-504 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 194: 3.11 " C9 " Indoor Unit

    Si39-504 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 195: Cj" Indoor Unit: Malfunction Of Thermostat Sensor In

    Troubleshooting by Indication on the Remote Controller Si39-504 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 196: E1" Outdoor Unit: Pc Board Defect

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.13 “ E1 ” Outdoor Unit: PC Board Defect Remote Controller Display Applicable RXYQ5MA~48MA 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 197: E3" Outdoor Unit: Actuation Of High Pressure Switch

    Troubleshooting by Indication on the Remote Controller Si39-504 3.14 “ E3 ” Outdoor Unit: Actuation of High Pressure Switch Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Abnormality is detected when the contact of the high pressure protection switch opens. Malfunction Detection Malfunction...

  • Page 198: E4" Outdoor Unit: Actuation Of Low Pressure Sensor

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.15 “ E4 ” Outdoor Unit: Actuation of Low Pressure Sensor Remote Controller Display Applicable RXYQ5MA~48MA 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 199: Outdoor Unit: Compressor Motor Lock

    Troubleshooting by Indication on the Remote Controller Si39-504 3.16 “ E5 ” Outdoor Unit: Compressor Motor Lock Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Inverter PC board takes the position signal from UVWN line connected between the inverter and compressor, and detects the position signal pattern.

  • Page 200: Outdoor Unit: Std Compressor Motor Overcurrent/Lock

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.17 “ E6 ” Outdoor Unit: STD Compressor Motor Overcurrent/ Lock Remote Controller Display Applicable RXYQ5MA~48MA 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 201: Outdoor Unit: Malfunction Of Outdoor Unit Fan Motor

    Troubleshooting by Indication on the Remote Controller Si39-504 “ E7 ” 3.18 Outdoor Unit: Malfunction of Outdoor Unit Fan Motor Remote Controller Display Applicable RXYQ5MA~48MA 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 202 Si39-504 Troubleshooting by Indication on the Remote Controller Troubleshooting Check No. 1 Check on pulse input of position signal of fan inverter PC board Is the LED (HAP) on fan inverter Replace the fan inverter PC PC board blinking? board. Check No.

  • Page 203: E9" Outdoor Unit: Malfunction Of Moving Part Of

    Troubleshooting by Indication on the Remote Controller Si39-504 3.19 “ E9 ” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E, Y2E) Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Check disconnection of connector Check continuity of expansion valve coil Malfunction Detection Malfunction...
  • Page 204 Si39-504 Troubleshooting by Indication on the Remote Controller ∗1 Coil check method for the moving part of the electronic expansion valve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins. (Normal) Pin No. 1.

  • Page 205: F3" Outdoor Unit: Abnormal Discharge Pipe Temperature

    Troubleshooting by Indication on the Remote Controller Si39-504 3.20 “ F3 ” Outdoor Unit: Abnormal Discharge Pipe Temperature Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor. Malfunction Detection Malfunction...

  • Page 206: Outdoor Unit: Refrigerant Overcharged

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.21 “ F6 ” Outdoor Unit: Refrigerant Overcharged Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Refrigerant overcharge is detected from the suction pipe and subcooling heat exchanger gas pipe temperature during check operation. Malfunction Detection Malfunction...

  • Page 207: Outdoor Unit: Abnormal Outdoor Fan Motor Signal

    Troubleshooting by Indication on the Remote Controller Si39-504 3.22 “ H7 ” Outdoor Unit: Abnormal Outdoor Fan Motor Signal Remote Controller Display Applicable RXYQ5MA~48MA 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 208: 3.23 " H9 " Outdoor Unit

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.23 “ H9 ” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air Remote Controller Display Applicable RXYQ5MA~48MA Models Method of The abnormal detection is based on current detected by current sensor. Malfunction Detection Malfunction...

  • Page 209: Outdoor Unit: Current Sensor Malfunction

    Troubleshooting by Indication on the Remote Controller Si39-504 “ J2 ” 3.24 Outdoor Unit: Current Sensor Malfunction Remote Controller Display Applicable RXYQ5MA~48MA 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 210: 3.25 " J3 " Outdoor Unit

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.25 “ J3 ” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R3, R31~33T) Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Malfunction is detected from the temperature detected by discharge pipe temperature thermistor.

  • Page 211: 3.26 " J5 " Outdoor Unit

    Troubleshooting by Indication on the Remote Controller Si39-504 3.26 “ J5 ” Outdoor Unit: Malfunction of Thermistor (R2T) for Suction Pipe Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Malfunction is detected from the temperature detected by the suction pipe temperature thermistor.

  • Page 212: J6" Outdoor Unit: Malfunction Of Thermistor (R4T) For

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.27 “ J6 ” Outdoor Unit: Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger Deicer Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Malfunction is detected from the temperature detected by the heat exchanger thermistor. Malfunction Detection Malfunction...

  • Page 213: 3.28 " J7 " Outdoor Unit

    Troubleshooting by Indication on the Remote Controller Si39-504 3.28 “ J7 ” Outdoor Unit: Malfunction of Receiver Outlet Liquid Pipe Thermistor (R6T) Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Malfunction is detected according to the temperature detected by receiver outlet liquid pipe thermistor.

  • Page 214: 3.29 " J9 " Outdoor Unit

    Si39-504 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 RXYQ5MA~48MA Models Method of Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor.

  • Page 215: Ja" Outdoor Unit: Malfunction Of High Pressure Sensor

    Troubleshooting by Indication on the Remote Controller Si39-504 3.30 “ JA ” Outdoor Unit: Malfunction of High Pressure Sensor Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Malfunction is detected from the pressure detected by the high pressure sensor. Malfunction Detection Malfunction When the discharge pipe pressure sensor is short circuit or open circuit.

  • Page 216: Jc" Outdoor Unit: Malfunction Of Low Pressure Sensor

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.31 “ JC ” Outdoor Unit: Malfunction of Low Pressure Sensor Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Malfunction is detected from pressure detected by low pressure sensor. Malfunction Detection Malfunction When the suction pipe pressure sensor is short circuit or open circuit.

  • Page 217: 3.32 " L4 " Outdoor Unit

    Troubleshooting by Indication on the Remote Controller Si39-504 3.32 “ L4 ” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Fin temperature is detected by the thermistor of the radiation fin. Malfunction Detection Malfunction...

  • Page 218: L5" Outdoor Unit: Inverter Compressor Abnormal

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.33 “ L5 ” Outdoor Unit: Inverter Compressor Abnormal Remote Controller Display Applicable RXYQ5MA~48MA 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 219: L8" Outdoor Unit: Inverter Current Abnormal

    Troubleshooting by Indication on the Remote Controller Si39-504 3.34 “ L8 ” Outdoor Unit: Inverter Current Abnormal Remote Controller Display Applicable RXYQ5MA~48MA 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 13.5A: YL (380V) or 25.1A: TL (220V)) Decision Conditions...

  • Page 220: L9" Outdoor Unit: Inverter Start Up Error

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.35 “ L9 ” Outdoor Unit: Inverter Start up Error Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Malfunction is detected from current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected during startup (Inverter secondary current 13.5A: YL (380V) or 25.1A: TL (220V)) Decision Conditions...

  • Page 221: 3.36 " Lc " Outdoor Unit

    Troubleshooting by Indication on the Remote Controller Si39-504 3.36 “ LC ” Outdoor Unit: Malfunction of Transmission Between Inverter and Control PC Board Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Check the communication state between inverter PC board and control PC board by micro- computer.
  • Page 222 Si39-504 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 connectors between the main PC board (A1P), Connect transmission wiring and fan drive PC board (A3P) turn on again.

  • Page 223: 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 224: P4" Outdoor Unit: Malfunction Of Inverter Radiating Fin

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.38 “ P4 ” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Resistance of radiation fin thermistor is detected when the compressor is not operating. Malfunction Detection Malfunction...

  • Page 225: 3.39 " Uo " Outdoor Unit

    Troubleshooting by Indication on the Remote Controller Si39-504 3.39 “ UO ” Outdoor Unit: Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Short of gas malfunction is detected by discharge pipe temperature thermistor. Malfunction Detection Malfunction...

  • Page 226: Reverse Phase, Open Phase

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.40 “ U1 ” Reverse Phase, Open Phase Remote Controller Display Applicable 3 phase outdoor unit only Models Method of The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged.

  • Page 227: U2" Outdoor Unit: Power Supply Insufficient Or

    Troubleshooting by Indication on the Remote Controller Si39-504 3.41 “ U2 ” Outdoor Unit: Power Supply Insufficient or Instantaneous Failure Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Detection Malfunction...
  • Page 228 Si39-504 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 voltage of power Correct power supply. supply 380V (YL) or 220V (TL)? Turn on again.

  • Page 229: U3" Outdoor Unit: Check Operation Not Executed

    Troubleshooting by Indication on the Remote Controller Si39-504 “ U3 ” Outdoor Unit: 3.42 Check Operation not executed Remote Controller Display Applicable RXYQ5MA~48MA 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 230: Malfunction Of Transmission Between Indoor Units

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.43 “ U4 ” Malfunction of Transmission Between Indoor Units Remote Controller Display Applicable All model of indoor unit Models RXYQ5MA~48MA Method of Microcomputer checks if transmission between indoor and outdoor units is normal. Malfunction Detection Malfunction...
  • Page 231 Troubleshooting by Indication on the Remote Controller Si39-504 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 232: Remote Controller And Indoor Unit

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.44 “ 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 233: Indoor Unit: Malfunction Of Transmission Between Outdoor Units

    Troubleshooting by Indication on the Remote Controller Si39-504 3.45 “ 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...
  • Page 234 Si39-504 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 outdoor units multi Fix the outdoor units multi connection transmission connection transmission wiring normal? wiring and reset power.

  • Page 235: U8" Indoor Unit: Malfunction Of Transmission Between

    Troubleshooting by Indication on the Remote Controller Si39-504 3.46 “ 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 236: U9" Indoor Unit: Malfunction Of Transmission Between

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.47 “ 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 237 Troubleshooting by Indication on the Remote Controller Si39-504 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. "U9" has been displayed for 2 Re-diagnose by display after minutes or more. passage of 2 minutes or more.

  • Page 238: Ua" Improper Combination Of Indoor And Outdoor Units

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.48 “ UA ” Improper Combination of Indoor and Outdoor Units, Indoor Units and Remote Controller Remote Controller Display Applicable All models of indoor unit RXYQ5MA~48MA Models Remote controller Method of A difference occurs in data by the type of refrigerant between indoor and outdoor units. The number of indoor units is outside of the allowable range.

  • Page 239: Uc" Address Duplication Of Centralized Controller

    Troubleshooting by Indication on the Remote Controller Si39-504 3.49 “ UC ” Address Duplication of Centralized Controller Remote Controller Display Applicable All models of indoor unit Models Centralized controller Method of The principal indoor unit detects the same address as that of its own on any other indoor unit. Malfunction Detection Malfunction...

  • Page 240: Malfunction Of Transmission Between Centralized Controller And Indoor Unit

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.50 “ UE ” Malfunction of Transmission Between Centralized Controller and Indoor Unit Remote Controller Display Applicable All models of indoor units Centralized controller Models Method of Microcomputer checks if transmission between indoor unit and centralized controller is normal. Malfunction Detection Malfunction...
  • Page 241 Troubleshooting by Indication on the Remote Controller Si39-504 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. an indoor unit once connected been removed Reset power supply or its address simultaneously for all optional changed? controllers for centralized...

  • Page 242: Uf" System Is Not Set Yet

    Si39-504 Troubleshooting by Indication on the Remote Controller 3.51 “ UF ” System is not Set yet Remote Controller Display Applicable All models of indoor units Models RXYQ5MA~48MA 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 243: Uh" Malfunction Of System, Refrigerant System Address Undefined

    Troubleshooting by Indication on the Remote Controller Si39-504 3.52 “ UH ” Malfunction of System, Refrigerant System Address Undefined Remote Controller Display Applicable All models of indoor units RXYQ5MA~48MA Models Method of Detect an indoor unit with no address setting. Malfunction Detection Malfunction...

  • Page 244: Troubleshooting (Op: Central Remote Controller)

    Si39-504 Troubleshooting (OP: Central Remote Controller) Troubleshooting (OP: Central Remote Controller) “ M1 ” PC Board Defect Remote Controller Display Applicable Central remote controller 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 245: M8" Malfunction Of Transmission Between Optional

    Troubleshooting (OP: Central Remote Controller) Si39-504 “ M8 ” Malfunction of Transmission Between Optional Controllers for Centralized Control Remote Controller Display Applicable Central remote controller Models Method of Detect the malfunction according to DIII-NET transmission data. (The system will be automatically reset.) Malfunction Detection...

  • Page 246: Improper Combination Of Optional Controllerslers For Centralized Controllers

    Si39-504 Troubleshooting (OP: Central Remote Controller) “ MA ” Improper Combination of Optional Controllers for Centralized Control Remote Controller Display Applicable Central remote controller 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. When multiple master controller are present.
  • Page 247 Troubleshooting (OP: Central Remote Controller) Si39-504 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Cannot be used in combination with a wiring the wiring adaptor for adaptor for electrical electrical appendices appendices.

  • Page 248: Mc" Address Duplication, Improper Setting

    Si39-504 Troubleshooting (OP: Central Remote Controller) “ MC ” Address Duplication, Improper Setting Remote Controller Display Applicable Central remote controller Models Method of Detect the malfunction according to DIII-NET transmission data. Malfunction Detection Malfunction Two units are both set to master controller mode or slave controller mode. Decision Conditions Supposed...

  • Page 249: Troubleshooting (Op: Schedule Timer)

    Troubleshooting (OP: Schedule Timer) Si39-504 Troubleshooting (OP: Schedule Timer) “ UE ” Malfunction of Transmission Between Centralized Controller and Indoor Unit Remote Controller Display Applicable Schedule timer Models All models of indoor units Method of Microcomputer checks if transmission between indoor unit and centralized controller is normal. Malfunction Detection Malfunction...
  • Page 250 Si39-504 Troubleshooting (OP: Schedule Timer) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. an indoor unit once connected been Reset power supply removed or its address simultaneously for all optional changed? controllers for centralized control.

  • Page 251: Pc Board Defect

    Troubleshooting (OP: Schedule Timer) Si39-504 “ M1 ” PC Board Defect Remote Controller Display Applicable 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 252: M8" Malfunction Of Transmission Between Optional

    Si39-504 Troubleshooting (OP: Schedule Timer) “ M8 ” Malfunction of Transmission Between Optional Controllers for Centralized Control Remote Controller Display Applicable Schedule timer Models Method of Detect the malfunction according to DIII-NET transmission data. (The system will be automatically reset.) Malfunction Detection Malfunction...

  • Page 253: Improper Combination Of Optional Controllerslers For Centralized Controllers

    Troubleshooting (OP: Schedule Timer) Si39-504 “ MA ” Improper Combination of Optional Controllers for Centralized Control Remote Controller Display Applicable 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. When multiple master controller are present.
  • Page 254 Si39-504 Troubleshooting (OP: Schedule Timer) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Cannot be used in combination with a wiring Is the wiring adaptor for electrical adaptor for electrical appendices.

  • Page 255: Mc" Address Duplication, Improper Setting

    Troubleshooting (OP: Schedule Timer) Si39-504 “ MC ” Address Duplication, Improper Setting Remote Controller Display Applicable Schedule timer Models Method of Detect the malfunction according to DIII-NET transmission data. Malfunction Detection Malfunction When two or more schedule timers are connected. Decision Conditions Supposed...

  • Page 256: Troubleshooting (Op: Unified On/Off Controller)

    Si39-504 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 Unified ON/OFF controller Models Method of Detect the malfunction according to DIII-NET transmission data. Malfunction Detection Malfunction...
  • Page 257 Troubleshooting (OP: Unified ON/OFF Controller) Si39-504 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 258: Display "Under Centralized Control" Blinks (Repeats Single Blink)

    Si39-504 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 259 Troubleshooting (OP: Unified ON/OFF Controller) Si39-504 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 260 Si39-504 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 261: Display "Under Centralized Control" Blinks (Repeats Double Blink)

    Troubleshooting (OP: Unified ON/OFF Controller) Si39-504 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 262 Si39-504 Troubleshooting (OP: Unified ON/OFF Controller) Check No. 1 Check on pulse input of position signal of fan inverter PC board (1) Disconnect the connector X2A while power supply OFF and operation OFF. (2) Is the voltage between pins No. 4 and 5 on X2A approx. 15 V after power supply is turned (3) Connect the connector X2A while power supply OFF and operation OFF.
  • Page 263 Troubleshooting (OP: Unified ON/OFF Controller) Si39-504 Check No. 2 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 264: Part 7 Appendix

    Si39-504 Part 7 Part 7 Part 7 Part 7 Appendix Appendix Appendix Appendix 1. Piping Diagrams..................254 1.1 Outdoor Unit ..................254 1.2 Indoor Unit....................257 2. Wiring Diagrams for Reference............259 2.1 Outdoor Unit ..................259 2.2 Field Wiring ..................265 2.3 Indoor Unit....................271 3. List of Electrical and Functional Parts ..........283 3.1 Outdoor Unit ..................283 3.2 Indoor Side ...................287 4.

  • Page 265: Piping Diagrams

    Piping Diagrams Si39-504 1. Piping Diagrams Outdoor Unit RXYQ5MAYL(E), TL(E) 3D048203 Appendix...
  • Page 266 Si39-504 Piping Diagrams RXYQ8MA / 10MA / 12MAYL(E), TL(E) 3D048033A Appendix...
  • Page 267 Piping Diagrams Si39-504 RXYQ14MA / 16MAYL(E), TL(E) 3D048034A Appendix...

  • Page 268: Indoor Unit

    Si39-504 Piping Diagrams 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 269 Piping Diagrams Si39-504 FXDQ 4D043864E Refrigerant pipe connection port diameters (mm) Model Liquid φ12.7 φ6.4 FXDQ20N / 25N / 32N / 40N / 50NVE(T) φ15.9 φ9.5 FXDQ63NVE(T) Appendix...

  • Page 270: Wiring Diagrams For Reference

    Si39-504 Wiring Diagrams for Reference 2. Wiring Diagrams for Reference Outdoor Unit 2.1.1 RXYQ-MAYL(E) RXYQ5MAYL(E) Appendix...
  • Page 271 Wiring Diagrams for Reference Si39-504 RXYQ8MA / 10MA / 12MAYL(E) Appendix...
  • Page 272 Si39-504 Wiring Diagrams for Reference RXYQ14MA / 16MAYL(E) Appendix...
  • Page 273 Wiring Diagrams for Reference Si39-504 2.1.2 RXYQ-MATL(E) RXYQ5MATL(E) Appendix...
  • Page 274 Si39-504 Wiring Diagrams for Reference RXYQ8MA / 10MA / 12MATL(E) Appendix...
  • Page 275 Wiring Diagrams for Reference Si39-504 RXYQ14MA / 16MATL(E) Appendix...

  • Page 276: Field Wiring

    Si39-504 Wiring Diagrams for Reference Field Wiring 2.2.1 RXYQ-MAYL(E) RXYQ5MA / 8MA / 10MA / 12MA / 14MA / 16MAYL(E) Appendix...
  • Page 277 Wiring Diagrams for Reference Si39-504 RXYQ18MA / 20MA / 22MA / 24MA / 26MA / 28MA / 30MA / 32MAYL(E) Appendix...
  • Page 278 Si39-504 Wiring Diagrams for Reference RXYQ34MA / 36MA / 38MA / 40MA / 42MA / 44MA / 46MA / 48MAYL(E) Appendix...
  • Page 279 Wiring Diagrams for Reference Si39-504 2.2.2 RXYQ-MATL(E) RXYQ5MA / 8MA / 10MA / 12MA / 14MA / 16MATL(E) Appendix...
  • Page 280 Si39-504 Wiring Diagrams for Reference RXYQ18MA / 20MA / 22MA / 24MA / 26MA / 28MA / 30MA / 32MATL(E) Appendix...
  • Page 281 Wiring Diagrams for Reference Si39-504 RXYQ34MA / 36MA / 38MA / 40MA / 42MA / 44MA / 46MA / 48MATL(E) Appendix...

  • Page 282: Indoor Unit

    Si39-504 Wiring Diagrams for Reference Indoor Unit FXCQ20M / 25M / 32M / 63MVE Appendix...
  • Page 283 Wiring Diagrams for Reference Si39-504 FXCQ40M / 50M / 80M / 125MVE Appendix...
  • Page 284 Si39-504 Wiring Diagrams for Reference FXFQ25M / 32M / 40M / 50M / 63M / 80M / 100M / 125MVE Appendix...
  • Page 285 Wiring Diagrams for Reference Si39-504 FXKQ25M / 32M / 40M / 63MVE Appendix...
  • Page 286 Si39-504 Wiring Diagrams for Reference FXDQ20N / 25N / 32N / 40N / 50N / 63NVE (with Drain Pump) Appendix...
  • Page 287 Wiring Diagrams for Reference Si39-504 FXDQ20N / 25N / 32N / 40N / 50N / 63NVET (without Drain Pump) Appendix...
  • Page 288 Si39-504 Wiring Diagrams for Reference FXSQ20M / 25M / 32M / 40M / 50M / 63M / 80M / 100M / 125MVE Appendix...
  • Page 289 Wiring Diagrams for Reference Si39-504 FXMQ40M / 50M / 63M / 80M / 100M / 125MVE Appendix...
  • Page 290 Si39-504 Wiring Diagrams for Reference FXMQ200M / 250MVE Appendix...
  • Page 291 Wiring Diagrams for Reference Si39-504 FXHQ32M / 63M / 100MVE Appendix...
  • Page 292 Si39-504 Wiring Diagrams for Reference FXAQ20M / 25M / 32MVE / 40M / 50M / 63MVE Appendix...
  • Page 293 Wiring Diagrams for Reference Si39-504 FXLQ20M / 25M / 32M / 40M / 50M / 63MVE FXNQ20M / 25M / 32M / 40M / 50M / 63MVE Appendix...

  • Page 294: List Of Electrical And Functional Parts

    Si39-504 List of Electrical and Functional Parts List of Electrical and Functional Parts Outdoor Unit 3.1.1 RXYQ5MAY1~16MAYL Model Item Name Symbol RXYQ5MAYL RXYQ8MAYL RXYQ10MAYL Type JT1G-VDKYR@T Inverter OC protection 13.5A device Type JT170G-KYH@T Compressor STD 1 — OC protection 15.0A device Type STD 2...
  • Page 295 List of Electrical and Functional Parts Si39-504 Model Item Name Symbol RXYQ12MAYL RXYQ14MAYL RXYQ16MAYL Type JT1G-VDKYR@T Inverter OC protection 13.5A device Type JT170G-KYH@T Compressor STD 1 OC protection 15.0A device Type JT170G-KYH@T STD 2 — OC protection 15.0A device OC protection Fan motor 1.8A device...
  • Page 296 Si39-504 List of Electrical and Functional Parts 3.1.2 RXYQ5MAY1~16MATL Model Item Name Symbol RXYQ5MATL RXYQ8MATL RXYQ10MATL Type JT100G-VDK@S3 Inverter OC protection 25.1A device Type JT170G-K Compressor STD 1 — OC protection device Type STD 2 — OC protection device OC protection Fan motor 3.2A 6.4A...
  • Page 297 List of Electrical and Functional Parts Si39-504 Model Item Name Symbol RXYQ12MATL RXYQ14MATL RXYQ16MATL Type JT100G-VDK@S3 Inverter OC protection 25.1A device Type JT170G-K Compressor STD 1 OC protection device Type JT170G-K STD 2 — OC protection device OC protection Fan motor 6.4A device Electronic expansion valve (Main)

  • Page 298: Indoor Side

    Si39-504 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 BRC1A61 Option Controller Remote Controller Wireless Remote BRC7E61W Option Controller Fan Motor DC380V 30W 8P DC 380V 120W 8P AC220-240V (50Hz) AC220V (60Hz) Drain Pump...
  • Page 299 List of Electrical and Functional Parts Si39-504 Model Parts Name Symbol Remark FXKQ FXKQ FXKQ FXKQ 25MVE 32MVE 40MVE 63MVE Wired Remote BRC1A61 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 300 Si39-504 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 BRC1A62 Controller Remote Option Controller Wireless Remote BRC4C62 Controller AC 220~240V 50Hz 1φ125...
  • Page 301 List of Electrical and Functional Parts Si39-504 Model Parts Name Symbol Remark FXHQ FXHQ FXHQ 32MVE 63MVE 100MVE Wired Remote BRC1A61 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 9.0µF-400V...
  • Page 302 Si39-504 List of Electrical and Functional Parts Model Parts Name Symbol Remark FXLQ FXLQ FXLQ FXLQ FXLQ FXLQ 20MVE 25MVE 32MVE 40MVE 50MVE 63MVE Wired Remote BRC1A62 Controller Remote Option Controller Wireless Remote BRC4C62 Controller AC 220~240V 50Hz Fan Motor 1φ15W 1φ25W 1φ35W...

  • Page 303: Option List

    Option List Si39-504 Option List Option List of Controllers Operation Control System Optional Accessories Type FXLQ-M FXCQ-M FXFQ-M FXKQ-M FXDQ-N FXSQ-M FXMQ-M FXHQ-M FXAQ-M FXNQ-M Item Wireless BRC7C62 BRC7E61W BRC4C61 BRC4C62 BRC4C62 BRC7E63W BRC7E618 BRC4C62 Remote controller Wired BRC1A61 BRC1A62 BRC1A62 BRC1A61 BRC1A62...
  • Page 304 Si39-504 Option List 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 305: Option Lists (Outdoor Unit)

    Option List Si39-504 Option Lists (Outdoor Unit) RXYQ5MAY1 ~ 16MAYL(E), TL(E) RXYQ12MAYL(E), TL(E) RXYQ8MAYL(E), TL(E) Optional accessories RXYQ5MAYL(E), TL(E) RXYQ14MAYL(E), TL(E) RXYQ10MAYL(E), TL(E) RXYQ16MAYL(E), TL(E) Cool/Heat Selector KRC19-26A Fixing box KJB111A KHRP26M22H KHRP26M22H KHRP26M22H (Max. 4 branch), (Max. 4 branch), (Max.

  • Page 306: Piping Installation Point

    Si39-504 Piping Installation Point Piping Installation Point Piping Installation Point The projection part between multi connection piping kits When the piping length between the multi connection kits or between multi connection kit and outdoor unit is 2m or more, prepare a vertical projection part (200mm or more as shown below) only on the gas pipe line location less than 2m from multi connection kit.

  • Page 307: The Example Of A Wrong Pattern

    Piping Installation Point Si39-504 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 Outdoor Unit - Multi Connection Piping Kit Actual piping length 10m or less, equivalent length 13m or less Max.allowable Actual piping length 150m or less, equivalent length 175m or Multi Connection Piping Kit - Indoor Unit...

  • Page 308: Selection Of Pipe Size, Joints And Header

    Si39-504 Selection of Pipe Size, Joints and Header 6. Selection of Pipe Size, Joints and Header Example of connection (R-410A Type) RXYQ5~48MA(Heat Pump) Appendix...
  • Page 309 Selection of Pipe Size, Joints and Header Si39-504 ∗Note 1 Appendix...

  • Page 310: Thermistor Resistance / Temperature Characteristics

    Si39-504 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 311 Thermistor Resistance / Temperature Characteristics Si39-504 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 312: Pressure Sensor

    Si39-504 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 313: Method Of Replacing The Inverter's Power Transistors And Diode Modules

    Method of Replacing The Inverter’s Power Transistors and Diode Modules Si39-504 Method of Replacing The Inverter’s Power Transistors and Diode Modules Method of Replacing The Inverter’s Power Transistors and Diode Modules Inverter PC board Inverter PC board (A2P) PC0409 Fasten Tab X11A Electronic circuit IGBT...
  • Page 314 Si39-504 Method of Replacing The Inverter’s Power Transistors and Diode Modules Power Transistor IGBT (On Inverter PC Board) (Decision) If other than given above, the power unit is defective and must be replaced. Note: Above figures are measured by analogue tester. Make sure to set “Tester Range” to “x 1k”. Diode Module (Decision) If other than given above, the diode module is defective and must be replaced.
  • Page 315 Method of Replacing The Inverter’s Power Transistors and Diode Modules Si39-504 Appendix...

  • Page 316: Part 8 Precautions For New Refrigerant (R-410A)

    Si39-504 Part 8 Precautions for New Precautions for New Precautions for New Precautions for New Refrigerant (R-410A) Refrigerant (R-410A) Refrigerant (R-410A) Refrigerant (R-410A) 1. Precautions for New Refrigerant (R-410A) .........306 1.1 Outline ....................306 1.2 Refrigerant Cylinders................308 1.3 Service Tools..................309 Precautions for New Refrigerant (R-410A)

  • Page 317: Precautions For New Refrigerant (R-410A)

    Precautions for New Refrigerant (R-410A) Si39-504 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 318 Si39-504 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 319: Refrigerant Cylinders

    Precautions for New Refrigerant (R-410A) Si39-504 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 320: Service Tools

    Si39-504 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 321 Precautions for New Refrigerant (R-410A) Si39-504 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 322 Si39-504 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 323 Precautions for New Refrigerant (R-410A) Si39-504 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 324 Si39-504 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 325 Precautions for New Refrigerant (R-410A) Si39-504 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 326: Index

    Si39-504 Index Index Index Index E5 ................ 188 E6 ................ 189 A0 .................170 E7 ................ 190 A1 .................171 E9 ................ 192 A3 .................172 Electronic Expansion Valve PI Control ....75 A6 .................174 Emergency Operation ........... 92 A7 .................175 Error of External Protection Device ..... 170 A9 .................177 Abnormal Discharge Pipe Temperature ....194 Abnormal Outdoor Fan Motor Signal ....196...
  • Page 327 Si39-504 L8 .................208 Malfunction of Transmission Between Optional L9 .................209 Controllers for Centralized Control ..234, 241 LC .................210 Malfunction of Transmission Between List of Electrical and Functional Parts ....283 Outdoor Units ..........222 Indoor Unit .............287 Malfunction of Transmission Between Remote Outdoor Unit ..........283 Controller and Indoor Unit ......
  • Page 328 Si39-504 Special Control ............77 Specifications ............10 Indoor Units .............21 Outdoor Units ..........10 Standby ..............82 Startup Control ............77 STD Compressor Motor Overcurrent/Lock ...189 STD Compressor Overload Protection ....90 Step Control of Outdoor Unit Fans ......75 Stopping Operation ..........83 Symptom-based Troubleshooting ......154 System is not Set yet ...........231 Test Operation .............106 Procedure and Outline ........106...
  • Page 329 Si39-504 Drawings & Flow Charts Drawings & Flow Charts Drawings & Flow Charts Drawings & Flow Charts Abnormal Discharge Pipe Temperature ....194 Improper Combination of Indoor and Outdoor Units, Abnormal Outdoor Fan Motor Signal ....196 Indoor Units and Remote Controller .... 227 Actuation of High Pressure Switch .......186 Improper Combination of Optional Controllers for Actuation of Low Pressure Sensor .......187...
  • Page 330 Si39-504 Malfunction of Transmission Between Indoor and Outdoor Units in the Same System ....225 Test Operation ............ 106 Malfunction of Transmission Between Thermostat Sensor in Remote Controller ....98 Indoor Units ...........219 Cooling ............98 Malfunction of Transmission Between Inverter and Heating ............
  • Page 331 Printed in Singapore 01/2006 COS...

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