Daikin RXYQ5-48MAY1 Service Manual
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Daikin RXYQ5-48MAY1 Service Manual

R410a heat pump 50hz
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Si39-407
RXYQ5-48MAY1
R410A Heat Pump 50Hz

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Summary of Contents for Daikin RXYQ5-48MAY1

  • Page 1 Si39-407 RXYQ5-48MAY1 R410A Heat Pump 50Hz...

  • Page 2: Table Of Contents

    Si39-407 R410A Heat Pump 50Hz 1. Introduction ................... vii 1.1 Safety Cautions ..................vii 1.2 PREFACE ....................xi 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 Si39-407 Defrosting Operation ................88 Pump-down Residual Operation ............89 3.5 Standby ....................90 Stopping Operation ................91 Pressure Equalization prior to Startup............93 Protection Control .................94 High Pressure Protection Control............94 Low Pressure Protection Control............95 Discharge Pipe Protection Control ............96 Inverter Protection Control ..............97 STD Compressor Overload Protection...........98 4.6 Injection Control (only for RXYQ5MA)............98 Other Control..................99 Outdoor Unit Rotation................99...
  • Page 4 Si39-407 3.2 “A1” Indoor Unit: PC Board Defect............183 3.3 “A3” Indoor Unit: Malfunction of Drain Level Control System (S1L) ..184 3.4 “A6” Indoor Unit: Fan Motor (M1F) Lock, Overload.......186 3.5 “A7” Indoor Unit: Malfunction of Swing Flap Motor (MA) .......187 3.6 “A9”...
  • Page 5 Si39-407 3.44 “U5” Malfunction of Transmission Between Remote Controller and Indoor Unit..................233 3.45 “U7” Malfunction of Transmission Between Outdoor Units....234 3.46 “U8” Malfunction of Transmission Between Master and Slave Remote Controllers .............236 3.47 “U9” Malfunction of Transmission Between Indoor and Outdoor Units in the Same System ..........237 3.48 “UA”...
  • Page 6 Si39-407 4.2 Option Lists (Outdoor Unit)..............311 Piping Installation Point...............312 5.1 Piping Installation Point ................312 The Example of A Wrong Pattern............313 Selection of Pipe Size, Joints and Header ..........314 6.1 RXYQ5MAY1, RXYQ8MAY1, RXYQ10MAY1, RXYQ12MAY1, RXYQ14MAY1, RXYQ16MAY1314 6.2 RXYQ18MAY1, RXYQ20MAY1, RXYQ22MAY1, RXYQ24MAY1, RXYQ26MAY1, RXYQ28MAY1, RXYQ30MAY1, RXYQ32MAY1, RXYQ34MAY1, RXYQ36MAY1, RXYQ38MAY1, RXYQ40MAY1, RXYQ42MAY1, RXYQ44MAY1, RXYQ46MAY1, RXYQ48MAY1316...

  • Page 7: Introduction

    Introduction Si39-407 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 Si39-407 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 Si39-407 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 Si39-407 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 2005 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

    Si39-407 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

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  • Page 14: External Appearance

    Si39-407 External Appearance 2. External Appearance Indoor Units Ceiling Mounted Cassette Type (Double Flow) Ceiling Suspended Type FXCQ20M FXHQ32M FXCQ25M FXHQ63M FXCQ32M FXHQ100M FXCQ40M FXCQ50M FXCQ63M FXCQ80M FXCQ125M Ceiling Mounted Cassette Type (Multi Flow) Wall Mounted Type FXFQ25M FXAQ20M FXFQ32M FXAQ25M FXFQ40M FXAQ32M...

  • Page 15: Outdoor Units

    External Appearance Si39-407 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

    20HP 22HP 24HP 26HP 28HP 30HP 32HP 34HP Heat Pump: BHFP22MA135 36HP 38HP 40HP 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

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  • Page 18 6L 0RGHO 6HOHFWLRQ &RQQHFWDEOH ,QGRRU 8QLW 7\SH 0RGHO 1DPH 3RZHU 6XSSO\ &HLOLQJ 0RXQWHG );&4 ² 0 ² ² &DVVHWWH 7\SH 'RXEOH )ORZ &HLOLQJ 0RXQWHG );=4 ² ² ² ² ² ² &DVVHWWH 7\SH 0XOWL )ORZ î &HLOLQJ 0RXQWHG );)4 ² 0 0 ²...

  • Page 19: Model Selection

    Model Selection Si39-407 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

    Si39-407 Part 2 Specifications Specifications ..................10 Outdoor Units ..................10 Indoor Units ....................21 Specifications...

  • Page 21: Specifications

    Specifications Si39-407 Specifications Outdoor Units Model Name RXYQ5MAY1 RXYQ8MAY1 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 16.0...
  • Page 22 Si39-407 Specifications Model Name RXYQ10MAY1 RXYQ12MAY1 kcal / h 24,300 29,000 1 Cooling Capacity (19.5°CWB) Btu / h 96,300 115,000 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 108,000 128,000 31.5 37.5...
  • Page 23 Specifications Si39-407 Model Name RXYQ14MAY1 RXYQ16MAY1 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 50.0...
  • Page 24 Si39-407 Specifications Model Name (Combination Unit) RXYQ18MAY1 RXYQ20MAY1 Model Name (Independent Unit) RXYQ8MAY1+RXYQ10MAY1 RXYQ10MAY1+RXYQ10MAY1 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 54,000 3 Heating Capacity Btu / h...
  • Page 25 Specifications Si39-407 Model Name (Combination Unit) RXYQ22MAY1 RXYQ24MAY1 Model Name (Independent Unit) RXYQ10MAY1+RXYQ12MAY1 RXYQ10MAY1+RXYQ14MAY1 kcal / h 53,200 58,800 1 Cooling Capacity (19.5°CWB) Btu / h 211,000 234,000 61.9 68.4 2 Cooling Capacity (19.0°CWB) 61.5 68.0 kcal / h 59,300 65,800 3 Heating Capacity Btu / h...
  • Page 26 Si39-407 Specifications Model Name (Combination Unit) RXYQ26MAY1 RXYQ28MAY1 Model Name (Independent Unit) RXYQ10MAY1+RXYQ16MAY1 RXYQ12MAY1+RXYQ16MAY1 kcal / h 63,100 68,000 1 Cooling Capacity (19.5°CWB) Btu / h 251,000 270,000 73.4 79.0 2 Cooling Capacity (19.0°CWB) 73.0 78.5 kcal / h 70,000 75,300 3 Heating Capacity Btu / h...
  • Page 27 Specifications Si39-407 Model Name (Combination Unit) RXYQ30MAY1 RXYQ32MAY1 Model Name (Independent Unit) RXYQ14MAY1+RXYQ16MAY1 RXYQ16MAY1+RXYQ16MAY1 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 3 Heating Capacity Btu / h...
  • Page 28 Si39-407 Specifications Model Name (Combination Unit) RXYQ34MAY1 RXYQ36MAY1 Model Name (Independent Unit) RXYQ10MAY1+RXYQ10MAY1+RXYQ14MAY1 RXYQ10MAY1+RXYQ10MAY1+RXYQ16MAY1 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 Btu / h 370,000 387,000...
  • Page 29 Specifications Si39-407 Model Name (Combination Unit) RXYQ38MAY1 RXYQ40MAY1 Model Name (Independent Unit) RXYQ10MAY1+RXYQ12MAY1+RXYQ16MAY1 RXYQ10MAY1+RXYQ14MAY1+RXYQ16MAY1 kcal / h 92,900 98,000 1 Cooling Capacity (19.5°CWB) Btu / h 369,000 389,000 2 Cooling Capacity (19.0°CWB) kcal / h 102,000 109,000 3 Heating Capacity Btu / h 407,000 433,000...
  • Page 30 Si39-407 Specifications Model Name (Combination Unit) RXYQ42MAY1 RXYQ44MAY1 Model Name (Independent Unit) RXYQ10MAY1+RXYQ16MAY1+RXYQ16MAY1 RXYQ12MAY1+RXYQ16MAY1+RXYQ16MAY1 kcal / h 102,000 108,000 1 Cooling Capacity (19.5°CWB) Btu / h 406,000 427,000 2 Cooling Capacity (19.0°CWB) kcal / h 114,000 119,000 3 Heating Capacity Btu / h 450,000 470,000...
  • Page 31 Specifications Si39-407 Model Name (Combination Unit) RXYQ46MAY1 RXYQ48MAY1 Model Name (Independent Unit) RXYQ14MAY1+RXYQ16MAY1+RXYQ16MAY1 RXYQ16MAY1+RXYQ16MAY1+RXYQ16MAY1 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 496,000 513,000...

  • Page 32: Indoor Units

    Si39-407 Specifications Indoor Units Ceiling Mounted Cassette Type (Double Flow) Model FXCQ20MVE FXCQ25MVE FXCQ32MVE FXCQ40MVE kcal/h 2,000 2,500 3,150 4,000 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 15,900 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 Si39-407 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 19,900 25,000 31,800 49,600 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 Si39-407 Specifications Ceiling Mounted Cassette Type (Multi Flow) 600×600 Model FXZQ20MVE FXZQ25MVE FXZQ32MVE kcal/h 2,000 2,500 3,150 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Galvanized Steel Plate Galvanized Steel Plate...
  • Page 35 Specifications Si39-407 Ceiling Mounted Cassette Type (Multi Flow) 600×600 Model FXZQ40MVE FXZQ50MVE kcal/h 4,000 5,000 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 3 Heating Capacity Btu/h 17,000 21,500 Casing Galvanized Steel Plate Galvanized Steel Plate Dimensions: (H×W×D) 260×575×575 260×575×575...
  • Page 36 Si39-407 Specifications Ceiling Mounted Cassette Type (Multi-flow) Model FXFQ25MVE FXFQ32MVE FXFQ40MVE FXFQ50MVE kcal/h 2,500 3,150 4,000 5,000 1 Cooling Capacity (19.5°CWB) Btu/h 9,900 12,500 15,900 19,900 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 17,000 21,500...
  • Page 37 Specifications Si39-407 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 25,000 31,800 39,700 49,600 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 38 Si39-407 Specifications Ceiling Mounted Cassette Corner Type Model FXKQ25MVE FXKQ32MVE FXKQ40MVE FXKQ63MVE kcal/h 2,500 3,150 4,000 6,300 1 Cooling Capacity (19.5°CWB) Btu/h 9,900 12,500 15,900 25,000 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 17,000 27,300...
  • Page 39 Specifications Si39-407 Slim Ceiling Mounted Duct Type Model FXDQ20NVE FXDQ25NVE FXDQ32NVE kcal/h 2,000 2,500 3,150 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate Dimensions: (H×W×D)
  • Page 40 Si39-407 Specifications Slim Ceiling Mounted Duct Type Model FXDQ40NVE FXDQ50NVE FXDQ63NVE kcal/h 4,000 5,000 6,300 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Color Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate...
  • Page 41 Specifications Si39-407 Ceiling Mounted Built-in Type Model FXSQ20MVE FXSQ25MVE FXSQ32MVE kcal/h 2,000 2,500 3,150 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate Dimensions: (H×W×D)
  • Page 42 Si39-407 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 15,900 19,900 25,000 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate Dimensions: (H×W×D)
  • Page 43 Specifications Si39-407 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 31,800 39,700 49,600 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 Si39-407 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 15,900 19,900 25,000 31,800 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 8,600 3 Heating Capacity Btu/h 17,000 21,500 27,300 34,100 10.0...
  • Page 45 Specifications Si39-407 Ceiling Mounted Duct Type Model FXMQ100MVE FXMQ125MVE FXMQ200MVE FXMQ250MVE kcal/h 10,000 12,500 20,000 25,000 1 Cooling Capacity (19.5°CWB) Btu/h 39,700 49,600 79,000 99,000 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 27,000 3 Heating Capacity...

  • Page 46: Ceiling Suspended Type

    Si39-407 Specifications Ceiling Suspended Type Model FXHQ32MVE FXHQ63MVE FXHQ100MVE kcal/h 3,150 6,300 10,000 1 Cooling Capacity (19.5°CWB) Btu/h 12,500 25,000 39,700 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 Si39-407 Wall Mounted Type Model FXAQ20MVE FXAQ25MVE FXAQ32MVE kcal/h 2,000 2,500 3,150 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 3 Heating Capacity Btu/h 8,500 10,900 13,600 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 Si39-407 Specifications Wall Mounted Type Model FXAQ40MVE FXAQ50MVE FXAQ63MVE kcal/h 4,000 5,000 6,300 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 3 Heating Capacity Btu/h 17,000 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 Specifications Si39-407 Floor Standing Type Model FXLQ20MVE FXLQ25MVE FXLQ32MVE kcal/h 2,000 2,500 3,150 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Dimensions: (H×W×D)
  • Page 50 Si39-407 Specifications Floor Standing Type Model FXLQ40MVE FXLQ50MVE FXLQ63MVE kcal/h 4,000 5,000 6,300 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Color Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Dimensions: (H×W×D)
  • Page 51 Specifications Si39-407 Concealed Floor Standing Type Model FXNQ20MVE FXNQ25MVE FXNQ32MVE kcal/h 2,000 2,500 3,150 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate Dimensions: (H×W×D)
  • Page 52 Si39-407 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 15,900 19,900 25,000 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Color Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate Dimensions: (H×W×D)
  • Page 53 Specifications Si39-407 Ceiling Suspended Cassette Type Indoor Unit FXUQ71MV1 FXUQ100MV1 FXUQ125MV1 Model Connection Unit BEVQ71MVE BEVQ100MVE BEVQ125MVE kcal/h 7,100 10,000 12,500 1 Cooling Capacity (19.5°CWB) Btu/h 28,200 39,700 49,600 11.6 14.5 2 Cooling Capacity (19.0°CWB) 11.2 14.0 kcal/h 7,700 10,800 12,000 3 Heating Capacity Btu/h...
  • Page 54 Si39-407 Specifications Wall Mounted Type Model FXAQ20MHV1 FXAQ25MHV1 FXAQ32MHV1 kcal/h 2,000 2,500 3,150 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color White (3.0Y8.5/0.5) White (3.0Y8.5/0.5) White (3.0Y8.5/0.5) Dimensions: (H×W×D)
  • Page 55 Specifications Si39-407 Wall Mounted Type Model FXAQ40MHV1 FXAQ50MHV1 kcal/h 4,000 5,000 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 3 Heating Capacity Btu/h 17,000 21,500 Casing Color White (3.0Y8.5/0.5) White (3.0Y8.5/0.5) Dimensions: (H×W×D) 290×1,050×230 290×1,050×230 Rows×Stages×Fin Pitch 2×14×1.4...
  • Page 56 Si39-407 Specifications Floor Standing Type Model FXLQ20MHV1 FXLQ25MHV1 FXLQ32MHV1 kcal/h 2,000 2,500 3,150 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Dimensions: (H×W×D)
  • Page 57 Specifications Si39-407 Floor Standing Type Model FXLQ40MHV1 FXLQ50MHV1 kcal/h 4,000 5,000 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 3 Heating Capacity Btu/h 17,000 21,500 Casing Color Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Dimensions: (H×W×D) 600×1,140×222 600×1,420×222 Rows×Stages×Fin Pitch...
  • Page 58 Si39-407 Specifications Outdoor Air Processing Unit Model FXMQ125MFV1 FXMQ200MFV1 FXMQ250MFV1 kcal/h 12,000 19,300 24,100 1 Cooling Capacity Btu/h 47,800 76,500 95,600 14.0 22.4 28.0 kcal/h 7,700 12,000 15,000 1 Heating Capacity Btu/h 30,000 47,500 59,400 13.9 17.4 Casing Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate Dimensions: (H×W×D)
  • Page 59 Specifications Si39-407 Specifications...

  • Page 60: Part 3 Refrigerant Circuit

    Si39-407 Part 3 Refrigerant Circuit Refrigerant Circuit .................50 RXYQ5MA .....................50 RXYQ8MA, 10MA, 12MA ..............52 RXYQ14MA, 16MA ................54 1.4 Outdoor air processing unit FXMQ125MFV1~250MFV1......56 Functional Parts Layout ................57 RXYQ5MA....................57 RXYQ8MA, 10MA, 12MA ...............58 RXYQ14MA, 16MA ................59 Refrigerant Flow for Each Operation Mode...........60 Refirgerant Circuit...

  • Page 61: Refrigerant Circuit

    Refrigerant Circuit Si39-407 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 62 Si39-407 Refrigerant Circuit RXYQ5MA 3D048203 Refirgerant Circuit...

  • Page 63: Rxyq8Ma, 10Ma, 12Ma

    Refrigerant Circuit Si39-407 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 64 Si39-407 Refrigerant Circuit RXYQ8MA, 10MA, 12MA 3D048033A Refirgerant Circuit...

  • Page 65: Rxyq14Ma, 16Ma

    Refrigerant Circuit Si39-407 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 66 Si39-407 Refrigerant Circuit RXYQ14MA, 16MA 3D048034A Refirgerant Circuit...

  • Page 67: Outdoor Air Processing Unit

    Refrigerant Circuit Si39-407 Outdoor air processing unit FXMQ125MFV1~250MFV1 1.4.1 Refrigerant System 4D018650B Main Control Equipment Code Symbol Name Main function Used to control the flow rate of refrigerant, and Motorized valve make the SH control while in cooling or the SC control while in heating.∗...

  • Page 68: Functional Parts Layout

    Si39-407 Functional Parts Layout 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 69: Rxyq8Ma, 10Ma, 12Ma

    Functional Parts Layout Si39-407 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 70: Rxyq14Ma, 16Ma

    Si39-407 Functional Parts Layout 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 71: Refrigerant Flow For Each Operation Mode

    Refrigerant Flow for Each Operation Mode Si39-407 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 72 Si39-407 Refrigerant Flow for Each Operation Mode 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 73 Refrigerant Flow for Each Operation Mode Si39-407 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 74 Si39-407 Refrigerant Flow for Each Operation Mode Heating Operation Indoor unit operation Fan ON Fan OFF " ON " " OFF " " ON " Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure"...
  • Page 75 Refrigerant Flow for Each Operation Mode Si39-407 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 76 Si39-407 Refrigerant Flow for Each Operation Mode 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 77 Refrigerant Flow for Each Operation Mode Si39-407 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 78 Si39-407 Refrigerant Flow for Each Operation Mode Heating Operation Indoor unit operation Fan ON Fan LL Fan OFF " ON " " OFF " " ON " "High temperature, high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid" "Low temperature, low pressure"...
  • Page 79 Refrigerant Flow for Each Operation Mode Si39-407 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 80 Si39-407 Refrigerant Flow for Each Operation Mode 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 81 Refrigerant Flow for Each Operation Mode Si39-407 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 82 Si39-407 Refrigerant Flow for Each Operation Mode Heating Operation Indoor unit operation Fan ON Fan LL " OFF " " ON " Fan OFF "High temperature, high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid" "Low temperature, low pressure"...
  • Page 83 Refrigerant Flow for Each Operation Mode Si39-407 Refirgerant Circuit...

  • Page 84: Part 4 Function

    Si39-407 Part 4 Part 4 Part 4 Part 4 Function Function Function Function 1. Function general ...................74 1.1 Symbol ....................74 1.2 Operation Mode..................75 2. Basic Control..................76 2.1 Normal Operation ...................76 2.2 Compressor PI Control................77 2.3 Electronic Expansion Valve PI Control...........83 2.4 Step Control of Outdoor Unit Fans ............83 2.5 Outdoor Unit Fan Control in Cooling Operation ........84 3.

  • Page 85: Function General

    Function general Si39-407 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 86: Operation Mode

    Si39-407 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 87: Basic Control

    Basic Control Si39-407 Basic Control Normal Operation 2.1.1 List of Functions in Normal Operation For master units 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 protection, Td protection, protection, Td protection,...

  • Page 88: Compressor Pi Control

    Si39-407 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 temperature achieve target value (TeS).
  • Page 89 Basic Control Si39-407 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 90 Si39-407 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 91 Basic Control Si39-407 RXYQ30MA,32MA RXYQ34MA,36MA,38MA Master Slave Master Slave Slave STEP unit unit unit unit unit unit STEP unit unit1 unit2 unit unit unit unit No.1 No.2 No.3 No.4 No.1 No.2 No.3 No.4 52Hz 52Hz 57Hz 57Hz 62Hz 62Hz 68Hz 68Hz 74Hz 74Hz...
  • Page 92 Si39-407 Basic Control RXYQ40MA,42MA,44MA STEP Master unit INV Slave unit1 INV Slave unit2 INV STD unit No.1 STD unit No.2 STD unit No.3 STD unit No.4 STD unit No.5 52Hz 57Hz 62Hz 68Hz 74Hz 81Hz 88Hz 96Hz 104Hz 110Hz 116Hz 124Hz 133Hz 143Hz...
  • Page 93 Basic Control Si39-407 RXYQ46MA,48MA Master unit Slave unit1 Slave unit2 STEP STD unit No.1 STD unit No.2 STD unit No.3 STD unit No.4 STD unit No.5 STD unit No.6 52Hz 57Hz 62Hz 68Hz 74Hz 81Hz 88Hz 96Hz 104Hz 110Hz 116Hz 124Hz 133Hz 143Hz...

  • Page 94: Electronic Expansion Valve Pi Control

    Si39-407 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 95: Outdoor Unit Fan Control In Cooling Operation

    Basic Control Si39-407 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 96: Special Control

    Si39-407 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 97: Oil Return Operation

    Special Control Si39-407 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 98: Si39

    Si39-407 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 99: Defrosting Operation

    Special Control Si39-407 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 100: Pump-Down Residual Operation

    Si39-407 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 101: Standby

    Special Control Si39-407 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 102: Stopping Operation

    Si39-407 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 ON Main motorized valve (EV1) 0 pls Subcooling motorized valve (EV2) 0 pls Hot gas bypass valve (SVP)
  • Page 103 Special Control Si39-407 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 104: Pressure Equalization Prior To Startup

    Si39-407 Special Control Pressure Equalization prior to Startup Actuator Operation Remarks Compressor — Cooling:OFF Outdoor unit fan — Heating:STEP 4 Four way valve Holds ON — 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 105: Protection Control

    Protection Control Si39-407 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 106: Low Pressure Protection Control

    Si39-407 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 107: Discharge Pipe Protection Control

    Protection Control Si39-407 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 108: Inverter Protection Control

    Si39-407 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 109: Std Compressor Overload Protection

    Protection Control Si39-407 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 110: Other Control

    Si39-407 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 111: Emergency Operation

    Other Control Si39-407 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 112 Si39-407 Other Control • For RXYQ14MA and 16MA, if the INV compressor is set to operation prohibition mode, only a single STD compressor will operate for the 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.

  • Page 113: Demand Operation

    Other Control Si39-407 • In order to set the SLAVE 2 to operation prohibition mode, set No. 40 of Setting mode 2 to "SLAVE 2 LED display (7:ON :OFF :Blink) OPERATION PROHIBITION". H1P---H7P (Procedure) (1) Press and hold the PAGE button (BS1) for a period 7777777 777777 of 5 seconds or more.

  • Page 114: Outline Of Control (Indoor Unit)

    Si39-407 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 115 Outline of Control (Indoor Unit) Si39-407 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 116: Louver Control For Preventing Ceiling Dirt

    Si39-407 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 117: Thermostat Sensor In Remote Controller

    Outline of Control (Indoor Unit) Si39-407 Thermostat Sensor in Remote Controller Temperature is controlled by both the thermostat sensor in remote controller and air suction thermostat in the indoor unit. (This is however limited to when the field setting for the thermostat sensor in remote controller is set to “Use.”...
  • Page 118 Si39-407 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 119: Thermostat Control While In Normal Operation

    Outline of Control (Indoor Unit) Si39-407 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 120: Freeze Prevention

    Si39-407 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 121: Control Of Outdoor Air Processing Unit (Unique Control For Outdoor Air Processing Unit)

    Outline of Control (Indoor Unit) Si39-407 Control of Outdoor Air Processing Unit (Unique Control for Outdoor Air Processing Unit) 6.7.1 Selection of Operation Mode (by suction air thermostat) Objective To select cooling, heating, or fan operation mode according to the suction air (outdoor air) temperature.
  • Page 122 Si39-407 Outline of Control (Indoor Unit) 6.7.2 Discharge Air Temperature Control Used to control the EV (electronic expansion valve) opening and thermostat ON/OFF so as to keep the discharge air temperature at the set temperature. (1) Cooling operations Refrigerant Discharge Temp.
  • Page 123 Outline of Control (Indoor Unit) Si39-407 (2) Heating operations Refrigerant Discharge (From Outdoor unit) Temp. Setting Refrigerant T1: Temperature detected by suction air thermistor Th1 T2: Temperature detected by liquid pipe temp. thermistor Th2 T3: Temperature detected by gas pipe temp. thermistor Th3 T4: Temperature detected by discharge air thermistor Th4 Tc : Outdoor unit condensing temperature EV: Electronic expansion valve opening...

  • Page 124: Heater Control

    Si39-407 Outline of Control (Indoor Unit) (3) Thermostat OFF by discharge air temperature <Cooling> Target discharge air temp. Ts – Discharge air temp. T4 >5 degree continue for 5 minutes. →Thermostat stops for 1 minute. →Thermostat ON <Heating> Discharge air temp. T4 – Target discharge air temp. Ts >5 degree  ...

  • Page 125: List Of Swing Flap Operations

    Outline of Control (Indoor Unit) Si39-407 (2) The heater control (ON/OFF) Condensing pressure 50ºC 60ºC is conducted by converting equivalent saturated the heater temperature into temperature the condensing pressure equivalent saturated temperature (Tc) according to the temperature detection through the high pressure sensor (SINPH) of the outdoor unit. [Fan residual operation] While the heater turns OFF, in order to prevent the activation of the thermal protector, the fan conducts residual operation for a given period of time after the heater turns OFF.

  • Page 126: Part 5 Test Operation

    Si39-407 Part 5 Test Operation Test Operation ..................116 Procedure and Outline .................116 Operation When Power is Turned On ..........120 Outdoor Unit PC Board Layout ............121 Field Setting ..................122 Field Setting from Remote Controller ...........122 3.2 Field Setting from Outdoor Unit............135 Test Operation...

  • Page 127: Test Operation

    Test Operation Si39-407 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 128 Si39-407 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 129 Test Operation Si39-407 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 130 Si39-407 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 131: Operation When Power Is Turned On

    Test Operation Si39-407 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 132: Outdoor Unit Pc Board Layout

    Si39-407 Outdoor Unit PC Board Layout Outdoor Unit PC Board Layout Outdoor unit PC board (2) Set mode display (LED) H1P H2P H3P H4P H5P H6P H7P (3) Mode setting switch MODE RETURN TEST RESET (1) Microcomputer normal monitor 1 2 3 4 1 2 3 4 (4) Local setting switch Connection terminal for transmission use...

  • Page 133: Field Setting

    Field Setting Si39-407 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 134 Si39-407 Field Setting 3.1.2 Wireless Remote Controller - Indoor Unit BRC7C type 1. When in the normal mode, push the “ ” button for 4 seconds or more, and operation then enters the “field set mode.” 2. Select the desired “mode No.” with the “ ”...
  • Page 135 Field Setting Si39-407 3.1.3 Simplified Remote Controller BRC2A51 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 136 Si39-407 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 137 Field Setting Si39-407 3.1.5 Applicable range of Field setting Ceiling mounted cassette type Slim Ceiling Ceiling Ceiling Wall Floor Concealed Outdoor Ceiling mounted mounted suspended mounted standing Floor Ceiling Multi Double Corner mounted built-in duct type type type standing suspended processing flow flow...

  • Page 138: Detailed Explanation Of Setting Modes

    Si39-407 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 139 Field Setting Si39-407 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 140 Si39-407 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 13 (23) Upward (Draft prevention) 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 141 Field Setting Si39-407 3.1.7 Outdoor Air Processing Unit-Field Setting (Remote Controller) Setting position No. Setting Mode Setting contents Stain of filter 2500hr 1250hr — — — — — — — — — — — — — Filtering (20) time Display —...
  • Page 142 Si39-407 Field Setting 3.1.8 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 143 Field Setting Si39-407 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 enters the “field set mode.” 2. Set mode No. “00” with “ ”...
  • Page 144 Si39-407 Field Setting 3.1.9 Setting of Operation Control Mode from Remote Controller (Local Setting) The operation control mode is compatible with a variety of controls and operations by limiting the functions of the operation remote controller. Furthermore, operations such as remote controller ON/OFF can be limited in accordance with the combination conditions.
  • Page 145 Field Setting Si39-407 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 146: Field Setting From Outdoor Unit

    Si39-407 Field Setting 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 147 Field Setting Si39-407 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 148 Si39-407 Field Setting 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 149 Field Setting Si39-407 “Detail of DS1-4, DS2-1~4 setting” Previous unit Mfg. No. Setting method ( represents the position of switches) HEAT PUMP(5HP) 6300001~6300272 Set DS2-1 to ON. RXYQ5MAY1 HEAT PUMP(8HP) 6300001~6300491 Set DS2-1 and DS2-3 to ON. RXYQ8MAY1 HEAT Set DS2-1, DS2-2 and DS2-3 PUMP(10HP) 6300001~6301014 to ON.
  • Page 150 Si39-407 Field Setting 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 indication as shown below.
  • Page 151 Field Setting Si39-407 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 (individual) ············Used to select COOL or HEAT by individual outdoor unit (factory set).
  • Page 152 Si39-407 Field Setting Setting item Description b. “Setting mode 2” Cool/heat unified Sets address for cool/heat unified operation. address Push and hold the MODE button Low noise/demand Address for low noise/demand operation (BS1) for 5 seconds and set to address “Setting mode 2”.
  • Page 153 Field Setting Si39-407 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 154 Si39-407 Field Setting Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set 8777777 ∗ Address Binary number 8777778 Cool / Heat Unified address (6 digits) 8788888 8777777 ∗ Address Binary number 8777778 Low noise/demand address...
  • Page 155 Field Setting Si39-407 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 156 Si39-407 Field Setting c. Monitor mode LED display Setting item Data display To enter the monitor mode, push the Number of units for sequential 9 7 7 7 7 7 7 See below MODE button (BS1) when in starting, and others “Setting mode 1”.
  • Page 157 Field Setting Si39-407 Push the SET button and match with the LEDs No. 1 - 15, push the RETURN button, and enter 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 158 Si39-407 Field Setting 3.2.2 Cool / Heat Mode Switching There are the following 5 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 159 Field Setting Si39-407 Set Cool / Heat Separately for Each Outdoor Unit System by Cool/Heat Switching Remote Controller It does not matter whether or not there is outdoor - outdoor unit wiring. Set outdoor unit PC board DS1-1 to “outdoor” (factory set). Set cool/heat switching to “individual”...
  • Page 160 Si39-407 Field Setting Setting of COOL/HEAT selection in a batch of outdoor unit system by each outdoor unit external control adapter with the use of COOL/HEAT centralized remote controller Mount the outdoor unit external control adapter (optional part) to OUT-OUT, IN-OUT, or IN- IN transmission line.
  • Page 161 Field Setting Si39-407 Setting of COOL/HEAT in a batch of multi-outdoor-unit system according to the master outdoor unit for the batch control with the use of COOL/HEAT selection remote controller Mount the COOL/HEAT selection remote controller to the master outdoor unit for the batch control.
  • Page 162 Si39-407 Field Setting Address setting for (Set lower 5 digits with binary number.) [No.0 to No.31] Adapter PCB Address Outdoor unit PCB LED Set with setting mode 2 No 0 77777 No 1 77778 No 2 77787 No 3 77788 No 4 77877 No 30...
  • Page 163 Field Setting Si39-407 Address setting procedure Adjust the Address No. (middle 2 digits) and the Pin No. (lower 3 digits) of the external control adapter (dip switch) to those of the outdoor unit main PC board (LED), using binary numbers. External control adapter Address Outdoor unit main PC board LED...
  • Page 164 Si39-407 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 165 Field Setting Si39-407 Image of operation in the case of A Image of operation in the case of B Image of operation in the case of A, B Test Operation...
  • Page 166 Si39-407 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. A. When the demand operation is carried out by external instructions (with the use of the outdoor unit external control adapter).
  • Page 167 Field Setting Si39-407 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 168 Si39-407 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 169 Field Setting Si39-407 Setting Setting Setting No. indication Setting No. indication Setting Setting contents indication (Initial setting) contents contents H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P Night-time low noise (Factory...
  • Page 170 Si39-407 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 171 Field Setting Si39-407 [Operation procedure detail] After turning the respective remote 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 172 Si39-407 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 to turn on some solenoid valves. [Operating procedure] With Setting Mode 2 while the unit stops, set (B) Refrigerant recovery / Vacuuming mode to ON.
  • Page 173 Field Setting Si39-407 Test Operation...

  • Page 174: Part 6 Troubleshooting

    Si39-407 Part 6 Part 6 Part 6 Part 6 Troubleshooting Troubleshooting Troubleshooting Troubleshooting 1. Symptom-based Troubleshooting ............166 2. Troubleshooting by Remote Controller ..........169 2.1 The INSPECTION / TEST Button............169 2.2 Self-diagnosis by Wired Remote Controller .........170 2.3 Self-diagnosis by Wireless Remote Controller ........171 2.4 Operation of The Remote Controller’s Inspection / Test Operation Button ................174 2.5 Remote Controller Service Mode ............175...
  • Page 175 Si39-407 3.28 “J8” Malfunction of Oil Equalizing Pipe Thermistor (R7T).....214 3.29 “J9” Malfunction of Receiver Gas Pipe Thermistor (R5T).....215 3.30 “JA” Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor ................216 3.31 “JC” Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor ..217 3.32 “L4”...
  • Page 176 Si39-407 6. Troubleshooting (OP: Unified ON/OFF Controller) ......258 6.1 Operation Lamp Blinks .................258 6.2 Display “Under Host Computer Integrate Control” Blinks (Repeats Single Blink)................260 6.3 Display “Under Host Computer Integrate Control” Blinks (Repeats Double Blink) ................263 Troubleshooting...

  • Page 177: Symptom-Based Troubleshooting

    Symptom-based Troubleshooting Si39-407 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 178 Si39-407 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 179 Symptom-based Troubleshooting Si39-407 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 180: Troubleshooting By Remote Controller

    Si39-407 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 181: Self-Diagnosis By Wired Remote Controller

    Troubleshooting by Remote Controller Si39-407 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 182: Self-Diagnosis By Wireless Remote Controller

    Si39-407 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 malfunction code is displayed when an operation error has occurred.
  • Page 183 Troubleshooting by Remote Controller Si39-407 The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed. Troubleshooting...
  • Page 184 Si39-407 Troubleshooting by Remote Controller Troubleshooting...

  • Page 185: Operation Of The Remote Controller's Inspection / Test Operation Button

    Troubleshooting by Remote Controller Si39-407 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 186: Remote Controller Service Mode

    Si39-407 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 187 Troubleshooting by Remote Controller Si39-407 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 188: Remote Controller Self-Diagnosis Function

    Si39-407 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 189 Troubleshooting by Remote Controller Si39-407 Malfunction Operation Inspection Unit No. Malfunction contents Page code lamp display Referred Indoor Error of external protection device Unit PC board defect, E PROM defect Malfunction of drain level control system (33H) Fan motor (MF) lock, overload Malfunction of swing flap motor (MA) Malfunction of moving part of electronic expansion valve (20E)
  • Page 190 Si39-407 Troubleshooting by Remote Controller Malfunction Operation Inspection Unit No. Malfunction contents Page code lamp display Referred Outdoor Malfunction of power unit — Unit Malfunction of transmission between inverter and control PC board Inverter over-ripple protection Malfunction of inverter radiating fin temperature rise sensor System Low pressure drop due to refrigerant shortage or...

  • Page 191: Malfunction Code Indication By Outdoor Unit Pcb

    Troubleshooting by Remote Controller Si39-407 Malfunction code indication by outdoor unit PCB Monitor mode Contents of malfunction Malfunction To enter the monitor mode, push the code MODE button (BS1) when in “Setting mode 1”. Abnormal discharge pressure HPS activated Abnormal suction pressure Abnormal Pe Compressor lock Detection of INV compressor lock...
  • Page 192 Si39-407 Troubleshooting by Remote Controller Malfunction Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 code LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED3 LED1 LED2 LED4 LED5 LED6 LED7 : ON : ON Malfunction code 1st...

  • Page 193: Troubleshooting By Indication On The Remote Controller

    Troubleshooting by Indication on the Remote Controller Si39-407 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 Malfunction Detection Malfunction Decision Conditions Supposed...

  • Page 194: A1" Indoor Unit: Pc Board Defect

    Si39-407 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 195: A3" Indoor Unit: Malfunction Of Drain Level Control System (S1L)

    Troubleshooting by Indication on the Remote Controller Si39-407 “ A3 ” Indoor Unit: Malfunction of Drain Level Control System (S1L) Remote Controller Display Applicable FXCQ, FXFQ, FXZQ, FXSQ, FXKQ, FXDQ, FXMQ, FXUQ, FXHQ (Option), FXMQ200,250M (Option), FXAQ (Option), FXMQ-MF (Option) Models Method of By float switch OFF detection...
  • Page 196 Si39-407 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 197: A6" Indoor Unit

    Troubleshooting by Indication on the Remote Controller Si39-407 “ 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 198: A7" Indoor Unit: Malfunction Of Swing Flap Motor (Ma)

    Si39-407 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 199 Troubleshooting by Indication on the Remote Controller Si39-407 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 200: A9" Indoor Unit: Malfunction Of Moving Part Of Electronic Expansion Valve (20E)

    Si39-407 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 Malfunction Detection Malfunction Decision Conditions Supposed Malfunction of moving part of electronic expansion valve Defect of indoor unit PC board Causes Defect of connecting cable...
  • Page 201 Troubleshooting by Indication on the Remote Controller Si39-407 ∗1: Coil check method for the moving part of the electronic expansion valve Discount the electronic expansion valve from the PC board and check the continuity between the connector pins. (Normal) Pin No. 1.

  • Page 202: Af" Indoor Unit: Drain Level Above Limit

    Si39-407 Troubleshooting by Indication on the Remote Controller “ AF ” Indoor Unit: Drain Level above Limit Remote Controller Display Applicable FXCQ, FXFQ, FXZQ, FXSQ, FXKQ, FXMQ, FXDQ, FXMQ-MF, FXUQ Models Method of Water leakage is detected based on float switch ON/OFF operation while the compressor is in non-operation.

  • Page 203: Aj" Indoor Unit: Malfunction Of Capacity Determination Device

    Troubleshooting by Indication on the Remote Controller Si39-407 “ 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 204: C4" Indoor Unit: Malfunction Of Thermistor (R2T)

    Si39-407 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 205: 3.10 " C5 " Indoor Unit

    Troubleshooting by Indication on the Remote Controller Si39-407 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 206: 3.11 " C9 " Indoor Unit

    Si39-407 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 207: Cj" Indoor Unit: Malfunction Of Thermostat Sensor In

    Troubleshooting by Indication on the Remote Controller Si39-407 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 208: E1" Outdoor Unit: Pc Board Defect

    Si39-407 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 209: E3" Outdoor Unit: Actuation Of High Pressure Switch

    Troubleshooting by Indication on the Remote Controller Si39-407 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 210: E4" Outdoor Unit: Actuation Of Low Pressure Sensor

    Si39-407 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 Malfunction Detection Malfunction Error is generated when the low pressure is dropped under specific pressure. Decision Conditions Supposed...

  • Page 211: Compressor Motor Lock

    Troubleshooting by Indication on the Remote Controller Si39-407 3.16 “ E5 ” 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. Malfunction Detection Malfunction...

  • Page 212: Std Compressor Motor Overcurrent/Lock

    Si39-407 Troubleshooting by Indication on the Remote Controller 3.17 “ E6 ” 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 213: Malfunction Of Outdoor Unit Fan Motor

    Troubleshooting by Indication on the Remote Controller Si39-407 “ E7 ” 3.18 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 214 Si39-407 Troubleshooting by Indication on the Remote Controller Troubleshooting Check No. 12 Check on pulse input of position signal of fan inverter Is the LED (HAP) on fan inverter Replace the fan inverter PCB blinking? PCB. Check No. 8 Check on connector of fan motor (Power supply cable) Are the resistance values...

  • Page 215: E9" Outdoor Unit: Malfunction Of Moving Part Of

    Troubleshooting by Indication on the Remote Controller Si39-407 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 216 Si39-407 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 217: F3" Outdoor Unit: Abnormal Discharge Pipe Temperature

    Troubleshooting by Indication on the Remote Controller Si39-407 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 218: Refrigerant Overcharged

    Si39-407 Troubleshooting by Indication on the Remote Controller 3.21 “ F6 ” Refrigerant Overcharged Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Refrigerant overcharge is detected from the receiver gas pipe temperature during test operation. Malfunction Detection Malfunction When the receiver gas pipe temperature is lower than evaporating temperature during test operation.

  • Page 219: Abnormal Outdoor Fan Motor Signal

    Troubleshooting by Indication on the Remote Controller Si39-407 3.22 “ H7 ” 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 220: H9" Outdoor Unit: Malfunction Of Thermistor For

    Si39-407 Troubleshooting by Indication on the Remote Controller 3.23 “ H9 ” Outdoor Unit: Malfunction of Thermistor for Outdoor Air (R1T) Remote Controller Display Applicable RXYQ5MA~48MA Models Method of The abnormal detection is based on current detected by current sensor. Malfunction Detection Malfunction...

  • Page 221: Current Sensor Malfunction

    Troubleshooting by Indication on the Remote Controller Si39-407 “ J2 ” 3.24 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 222: 3.25 " J3 " Outdoor Unit

    Si39-407 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 223: 3.26 " J5 " Outdoor Unit

    Troubleshooting by Indication on the Remote Controller Si39-407 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 224: 3.27 " J6 " Outdoor Unit

    Si39-407 Troubleshooting by Indication on the Remote Controller 3.27 “ J6 ” Outdoor Unit: Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Malfunction is detected from the temperature detected by the heat exchanger thermistor. Malfunction Detection Malfunction...

  • Page 225: Malfunction Of Oil Equalizing Pipe Thermistor (R7T)

    Troubleshooting by Indication on the Remote Controller Si39-407 3.28 “ J8 ” Malfunction of Oil Equalizing Pipe Thermistor (R7T) Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Malfunction is detected according to the temperature detected by oil equalizing pipe thermistor. Malfunction Detection Malfunction...

  • Page 226: Malfunction Of Receiver Gas Pipe Thermistor (R5T)

    Si39-407 Troubleshooting by Indication on the Remote Controller 3.29 “ J9 ” Malfunction of Receiver Gas Pipe Thermistor (R5T) Remote Controller Display Applicable RXYQ5MA~48MA Models Method of Malfunction is detected according to the temperature detected by receiver gas pipe thermistor. Malfunction Detection Malfunction...

  • Page 227: 3.30 " Ja " Outdoor Unit

    Troubleshooting by Indication on the Remote Controller Si39-407 3.30 “ JA ” Outdoor Unit: Malfunction of Discharge Pipe 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...

  • Page 228: 3.31 " Jc " Outdoor Unit

    Si39-407 Troubleshooting by Indication on the Remote Controller 3.31 “ JC ” Outdoor Unit: Malfunction of Suction Pipe 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 229: 3.32 " L4 " Outdoor Unit

    Troubleshooting by Indication on the Remote Controller Si39-407 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 230: L5" Outdoor Unit: Inverter Compressor Abnormal

    Si39-407 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 231: L8" Outdoor Unit: Inverter Current Abnormal

    Troubleshooting by Indication on the Remote Controller Si39-407 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. Decision Conditions Supposed...

  • Page 232: L9" Outdoor Unit: Inverter Start Up Error

    Si39-407 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 Decision Conditions Supposed...

  • Page 233: 3.36 " Lc " Outdoor Unit

    Troubleshooting by Indication on the Remote Controller Si39-407 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 234 Si39-407 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 235: 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 236: P4" Outdoor Unit: Malfunction Of Inverter Radiating Fin

    Si39-407 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 237: Uo" Low Pressure Drop Due To Refrigerant Shortage Or

    Troubleshooting by Indication on the Remote Controller Si39-407 3.39 “ UO ” 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 238: Reverse Phase, Open Phase

    Si39-407 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 Detection is based on the voltage in main circuit capacitor for inverter and supply voltage. The phase of each phase are detected by reverse phase detection circuit and right phase or Malfunction reverse phase are judged.

  • Page 239: Power Supply Insufficient Or Instantaneous Failure

    Troubleshooting by Indication on the Remote Controller Si39-407 3.41 “ U2 ” 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 240 Si39-407 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. connection wire connected Repair wiring. between the connector X21A and X6A? Turn on again. 220 ~ 240 V of Turn K1M ON.

  • Page 241: Check Operation Not Executed

    Troubleshooting by Indication on the Remote Controller Si39-407 “ U3 ” 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 242: Malfunction Of Transmission Between Indoor Units

    Si39-407 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 243: Si39

    Troubleshooting by Indication on the Remote Controller Si39-407 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 244: U5" Malfunction Of Transmission Between Remote Controller

    Si39-407 Troubleshooting by Indication on the Remote Controller 3.44 “ U5 ” 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 245: Malfunction Of Transmission Between Outdoor Units

    Troubleshooting by Indication on the Remote Controller Si39-407 3.45 “ U7 ” Malfunction of Transmission Between Outdoor Units Remote Controller Display Applicable All models of indoor units Models Method of Microcomputer checks if transmission between indoor unit and remote controller is normal. Malfunction Detection Malfunction...
  • Page 246 Si39-407 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 247: U8" Malfunction Of Transmission Between Master

    Troubleshooting by Indication on the Remote Controller Si39-407 3.46 “ U8 ” Malfunction of Transmission Between Master and Slave 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 248: Malfunction Of Transmission Between Indoor And Outdoor Units In The Same System

    Si39-407 Troubleshooting by Indication on the Remote Controller 3.47 “ U9 ” Malfunction of Transmission Between Indoor and Outdoor Units in the Same System Remote Controller Display Applicable All models of indoor units Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Malfunction of transmission within or outside of other system...
  • Page 249 Troubleshooting by Indication on the Remote Controller Si39-407 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 250: Ua" Excessive Number Of Indoor Units

    Si39-407 Troubleshooting by Indication on the Remote Controller 3.48 “ UA ” Excessive Number of Indoor Units Remote Controller Display Applicable All models of indoor unit Models RXYQ5MA~48MA Method of Malfunction Detection Malfunction Decision Conditions Supposed Excess of connected indoor units Defect of outdoor unit PC board (A1P) Causes Mismatching of the refrigerant type of indoor and outdoor unit.

  • Page 251: Uc" Address Duplication Of Central Remote Controller

    Troubleshooting by Indication on the Remote Controller Si39-407 3.49 “ UC ” Address Duplication of Central Remote Controller Remote Controller Display Applicable All models of indoor unit Models Centralized controller Method of Malfunction Detection Malfunction Decision Conditions Supposed Address duplication of centralized remote controller Defect of indoor unit PC board Causes Troubleshooting...

  • Page 252: Malfunction Of Transmission Between Central Remote Controller And Indoor Unit

    Si39-407 Troubleshooting by Indication on the Remote Controller 3.50 “ UE ” Malfunction of Transmission Between Central Remote 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 remote controller is normal.
  • Page 253 Troubleshooting by Indication on the Remote Controller Si39-407 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. an indoor unit once connected been remove Reset power supply or its address simultaneously for all optional changed? controllers for centralized...

  • Page 254: Uf" Refrigerant System Not Set, Incompatible Wiring/Piping

    Si39-407 Troubleshooting by Indication on the Remote Controller 3.51 “ UF ” Refrigerant System not Set, Incompatible Wiring/ Piping Remote Controller Display Applicable All models of indoor units RXYQ5MA~48MA Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Improper connection of transmission wiring between outdoor unit and outdoor unit outside control adaptor Causes Failure to execute wiring check operation...

  • Page 255: Uh" Malfunction Of System, Refrigerant System Address Undefined

    Troubleshooting by Indication on the Remote Controller Si39-407 3.52 “ UH ” Malfunction of System, Refrigerant System Address Undefined Remote Controller Display Applicable All models of indoor units RXYQ5MA~48MA Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Improper connection of transmission wiring between outdoor unit and outdoor unit outside control adaptor Causes Defect of indoor unit PC board...

  • Page 256: Troubleshooting (Op: Central Remote Controller)

    Si39-407 Troubleshooting (OP: Central Remote Controller) Troubleshooting (OP: Central Remote Controller) “ UE ” Malfunction of Transmission Between Central Remote Controller and Indoor Unit Remote Controller Display Applicable All models of indoor units Models RXYQ5MA~48MA Method of Microcomputer checks if transmission between indoor unit and central remote controller is normal.

  • Page 257: Pc Board Defect

    Troubleshooting (OP: Central Remote Controller) Si39-407 “ M1 ” PC Board Defect Remote Controller Display Applicable Centralized remote controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Defect of central remote controller PC board Causes Troubleshooting Replace the central remote controller PC board. Troubleshooting...

  • Page 258: Malfunction Of Transmission Between Optional Controllerslers For Centralized Controllers

    Si39-407 Troubleshooting (OP: Central Remote Controller) “ M8 ” Malfunction of Transmission Between Optional Controllers for Centralized Control Remote Controller Display Applicable Centralized remote controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Malfunction of transmission between optional controllers for centralized control Defect of PC board of optional controllers for centralized control Causes Troubleshooting...

  • Page 259: Improper Combination Of Optional Controllerslers For Centralized Controllers

    Troubleshooting (OP: Central Remote Controller) Si39-407 “ MA ” Improper Combination of Optional Controllers for Centralized Control Remote Controller Display Applicable Centralized remote controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Improper combination of optional controllers for centralized control More than one master controller is connected Causes Defect of PC board of optional controller for centralized control...
  • Page 260 Si39-407 Troubleshooting (OP: Central Remote Controller) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Cannot be used in combination with a wiring the wiring adaptor for adaptor for electrical electrical appendices appendices.

  • Page 261: Mc" Address Duplication, Improper Setting

    Troubleshooting (OP: Central Remote Controller) Si39-407 “ MC ” Address Duplication, Improper Setting Remote Controller Display Applicable Central remote controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Address duplication of centralized remote controller Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 262: Troubleshooting (Op: Schedule Timer)

    Si39-407 Troubleshooting (OP: Schedule Timer) Troubleshooting (OP: Schedule Timer) “ UE ” Malfunction of Transmission Between Central Remote Controller and Indoor Unit Remote Controller Display Applicable Schedule timer Models Method of Microcomputer checks if transmission between indoor unit and centralized remote controller is normal.
  • Page 263 Troubleshooting (OP: Schedule Timer) Si39-407 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. an indoor unit once connected been Reset power supply removeor its address simultaneously for all optional changed? controllers for centralized control.

  • Page 264: Pc Board Defect

    Si39-407 Troubleshooting (OP: Schedule Timer) “ M1 ” PC Board Defect Remote Controller Display Applicable Schedule timer Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Defect of schedule timer PC board Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 265: M8" Malfunction Of Transmission Between Optional

    Troubleshooting (OP: Schedule Timer) Si39-407 “ M8 ” Malfunction of Transmission Between Optional Controllers for Centralized Control Remote Controller Display Applicable All models of indoor units, schedule timer Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Malfunction of transmission between optional controllers for centralized control Defect of PC board of optional controllers for centralized control Causes Troubleshooting...

  • Page 266: Improper Combination Of Optional Controllerslers For Centralized Controllers

    Si39-407 Troubleshooting (OP: Schedule Timer) “ MA ” Improper Combination of Optional Controllers for Centralized Control Remote Controller Display Applicable All models of indoor units, schedule timer Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Improper combination of optional controllers for centralized control More than one master controller is connected.
  • Page 267 Troubleshooting (OP: Schedule Timer) Si39-407 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 268: Mc" Address Duplication, Improper Setting

    Si39-407 Troubleshooting (OP: Schedule Timer) “ MC ” Address Duplication, Improper Setting Remote Controller Display Applicable All models of indoor units, Models schedule timer Method of Malfunction Detection Malfunction Decision Conditions Supposed Address duplication of optional controller for centralized control Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector,...

  • Page 269: Troubleshooting (Op: Unified On/Off Controller)

    Troubleshooting (OP: Unified ON/OFF Controller) Si39-407 Troubleshooting (OP: Unified ON/OFF Controller) Operation Lamp Blinks Remote Operation lamp blinks Controller Display Applicable All models of indoor units Unified ON/OFF controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Malfunction of transmission between optional controller and indoor unit Connector for setting master controller is disconnected Causes Defect of unified ON/OFF controller...
  • Page 270 Si39-407 Troubleshooting (OP: Unified ON/OFF Controller) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is a malfunction code displayed on the Diagnose the cause with the remote controller? air conditioner's failure diagnosis manual.

  • Page 271: Display "Under Host Computer Integrate Control" Blinks (Repeats Single Blink)

    Troubleshooting (OP: Unified ON/OFF Controller) Si39-407 Display “Under Host Computer Integrate Control” Blinks (Repeats Single Blink) Remote “under host computer integrated control” (Repeats single blink) Controller Display Applicable Unified ON/OFF controller Central controller, Schedule timer Models Method of Malfunction Detection Malfunction Decision Conditions...
  • Page 272 Si39-407 Troubleshooting (OP: Unified ON/OFF Controller) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Has a once connected optional controller for centralized Reset power supply control been disconnected simultaneously for all optional or itsaddress controllers for centralized...
  • Page 273 Troubleshooting (OP: Unified ON/OFF Controller) Si39-407 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 274: Display "Under Host Computer Integrate Control" Blinks (Repeats Double Blink)

    Si39-407 Troubleshooting (OP: Unified ON/OFF Controller) Display “Under Host Computer Integrate Control” Blinks (Repeats Double Blink) Remote “under host computer integrated control” (Repeats double blink) Controller Display Applicable Unified ON/OFF controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Central control address (group No.) is not set for indoor unit.
  • Page 275 Troubleshooting (OP: Unified ON/OFF Controller) Si39-407 Check No. 8 Check on connector of fan motor (Power supply cable) (1) Turn off the power supply. Measure the resistance between phases of U,V,W at the motor side connectors (three-core wire) to check that the values are balanced and there is no short circuiting, while connector or relay connector is disconnected.
  • Page 276 Si39-407 Troubleshooting (OP: Unified ON/OFF Controller) Check No. 12 Check on pulse input of position signal of fan inverter PCB (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 277 Troubleshooting (OP: Unified ON/OFF Controller) Si39-407 Troubleshooting...

  • Page 278: Part 7 Appendix

    Si39-407 Part 7 Part 7 Part 7 Part 7 Appendix Appendix Appendix Appendix 1. Piping Diagrams..................268 1.1 Outdoor Unit ..................268 1.2 Indoor Unit....................271 2. Wiring Diagrams for Reference............277 2.1 Outdoor Unit ..................277 2.2 Field Wiring ..................280 2.3 Indoor Unit....................283 3. List of Electrical and Functional Parts ..........301 3.1 Outdoor Unit ..................301 3.2 Indoor Side ...................303 4.

  • Page 279: Piping Diagrams

    Piping Diagrams Si39-407 1. Piping Diagrams Outdoor Unit RXYQ5MAY1 3D048203 Appendix...
  • Page 280 Si39-407 Piping Diagrams RXYQ8MAY1 RXYQ10MAY1 RXYQ12MAY1 3D048033A Appendix...
  • Page 281 Piping Diagrams Si39-407 RXYQ14MAY1 RXYQ16MAY1 3D048034A Appendix...

  • Page 282: Indoor Unit

    Si39-407 Piping Diagrams Indoor Unit FXCQ, FXZQ, 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...
  • Page 283 Piping Diagrams Si39-407 FXDQ 4D043864B Refrigerant pipe connection port diameters (mm) Model Liquid φ12.7 φ6.4 FXDQ20N / 25N / 32N / 40N / 50NVE φ15.9 φ9.5 FXDQ63NVE Appendix...
  • Page 284 Si39-407 Piping Diagrams FXMQ125MFV1/200MFV1/250MFV1 4D018650B Refrigerant pipe connection port diameters (mm) Model Liquid φ15.9 φ9.5 FXMQ125MFV1 φ19.1 φ9.5 FXMQ200MFV1 φ22.2 φ9.5 FXMQ250MFV1 Appendix...
  • Page 285 Piping Diagrams Si39-407 FXUQ + BEVQ Indoor unit 4D037995E Connection Unit 4D034127B Appendix...
  • Page 286 Si39-407 Piping Diagrams FXAQ + BEVQ Indoor unit 4D047084 Connection Unit 4D034127B Appendix...
  • Page 287 Piping Diagrams Si39-407 FXLQ + BEVQ Indoor unit 4D047084 Connection Unit 4D034127B Appendix...

  • Page 288: Wiring Diagrams For Reference

    Si39-407 Wiring Diagrams for Reference 2. Wiring Diagrams for Reference Outdoor Unit RXYQ5MAY1 Appendix...
  • Page 289 Wiring Diagrams for Reference Si39-407 RXYQ8MAY1 RXYQ10MAY1 RXYQ12MAY1 Appendix...
  • Page 290 Si39-407 Wiring Diagrams for Reference RXYQ14MAY1 RXYQ16MAY1 Appendix...

  • Page 291: Field Wiring

    Wiring Diagrams for Reference Si39-407 Field Wiring RXYQ5MAY1, 8MAY1, 10MAY1, 12MAY1, 14MAY1, 16MAY1 Appendix...
  • Page 292 Si39-407 Wiring Diagrams for Reference RXYQ18MAY1, 20MAY1, 22MAY1, 24MAY1, 26MAY1, 28MAY1, 30MAY1, 32MAY1 Appendix...
  • Page 293 Wiring Diagrams for Reference Si39-407 RXYQ34MAY1, 36MAY1, 38MAY1, 40MAY1, 42MAY1, 44MAY1, 46MAY1, 48MAY1 Appendix...

  • Page 294: Indoor Unit

    Si39-407 Wiring Diagrams for Reference Indoor Unit FXCQ20M / 25M / 32M / 63MVE Appendix...
  • Page 295 Wiring Diagrams for Reference Si39-407 FXCQ40M / 50M / 80M/ 125MVE Appendix...
  • Page 296 Si39-407 Wiring Diagrams for Reference FXZQ20M / 25M / 32M / 40M / 50MVE Appendix...
  • Page 297 Wiring Diagrams for Reference Si39-407 FXFQ25M / 32M / 40M / 50M / 63M / 80M / 100M / 125MVE Appendix...
  • Page 298 Si39-407 Wiring Diagrams for Reference FXKQ25M / 32M / 40M / 63MVE Appendix...
  • Page 299 Wiring Diagrams for Reference Si39-407 FXDQ20N / 25N / 32N / 40N / 50N / 63NVE Appendix...
  • Page 300 Si39-407 Wiring Diagrams for Reference FXSQ20M / 25M / 32M / 40M / 50M / 63M / 80M / 100M / 125MVE Appendix...
  • Page 301 Wiring Diagrams for Reference Si39-407 FXMQ40M / 50M / 63M / 80M / 100M / 125MVE Appendix...
  • Page 302 Si39-407 Wiring Diagrams for Reference FXMQ200M / 250MVE Appendix...
  • Page 303 Wiring Diagrams for Reference Si39-407 FXHQ32M / 63M / 100MVE Appendix...
  • Page 304 Si39-407 Wiring Diagrams for Reference FXAQ20M / 25M / 32MVE / 40M / 50M / 63MVE Appendix...
  • Page 305 Wiring Diagrams for Reference Si39-407 FXLQ20M / 25M / 32M / 40M / 50M / 63MVE FXNQ20M / 25M / 32M / 40M / 50M / 63MVE Appendix...
  • Page 306 Si39-407 Wiring Diagrams for Reference FXUQ71M / 100M / 125MV1 Appendix...
  • Page 307 Wiring Diagrams for Reference Si39-407 FXAQ20MH / 25MH / 32MH / 40MH / 50MHV1 Appendix...
  • Page 308 Si39-407 Wiring Diagrams for Reference FXLQ20MH / 25MH / 32MH / 40MH / 50MHV1 Appendix...
  • Page 309 Wiring Diagrams for Reference Si39-407 FXMQ125MF / 200MF / 250MFV1 3D044996B Appendix...
  • Page 310 Si39-407 Wiring Diagrams for Reference BEVQ50MVE Notes 3D046579A Appendix...
  • Page 311 Wiring Diagrams for Reference Si39-407 BEVQ71M / 100M / 125MVE Notes 3D044901A Appendix...

  • Page 312: List Of Electrical And Functional Parts

    Si39-407 List of Electrical and Functional Parts List of Electrical and Functional Parts Outdoor Unit 3.1.1 RXYQ5MAY1~16MAY1 Model Item Name Symbol RXYQ5MAY1 RXYQ8MAY1 RXYQ10MAY1 Type JT1G-VDKYR@T Inverter OC protection 13.5A device Type JT170G-KYE@T Compressor STD 1 — OC protection 15.0A device Type STD 2...
  • Page 313 List of Electrical and Functional Parts Si39-407 Model Item Name Symbol RXYQ12MAY1 RXYQ14MAY1 RXYQ16MAY1 Type JT1G-VDKYR@T Inverter OC protection 13.5A device Type JT170G-KYE@T Compressor STD 1 OC protection 15.0A device Type JT170G-KYE@T STD 2 — OC protection 15.0A device OC protection Fan motor 1.8A device...

  • Page 314: Indoor Side

    Si39-407 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 315 List of Electrical and Functional Parts Si39-407 Model Parts Name Symbol Remark FXZQ FXZQ FXZQ FXZQ FXZQ 20MVE 25MVE 32MVE 40MVE 50MVE Wired Remote BRC1A61 Controller Remote Option Controller Wireless Remote BRC7E530W Controller AC 220~240V 50Hz Fan Motor 1φ55W 4P Thermal Fuse 135°C Capacitor, fan motor 4.0µ...
  • Page 316 Si39-407 List of Electrical and Functional Parts Model Parts Name Symbol Remark FXDQ FXDQ FXDQ FXDQ FXDQ FXDQ 20MVE 25MVE 32MVE 40MVE 50MVE 63MVE Wired Remote BRC1A62 Controller Remote Option Controller Wireless Remote BRC4C62 Controller AC 220~240V 50Hz 1φ62W 1φ130W Fan Motor Thermal protector Motors...
  • Page 317 List of Electrical and Functional Parts Si39-407 Model Parts Name Symbol Remark FXMQ FXMQ FXMQ FXMQ FXMQ FXMQ FXMQ FXMQ 40MVE 50MVE 63MVE 80MVE 100MVE 125MVE 200MVE 250MVE Wired Remote BRC1A62 Controller Remote Option Controller Wireless Remote BRC4C62 Controller AC 220~240V 50Hz Fan Motor 1φ100W 1φ160W...
  • Page 318 Si39-407 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 319 List of Electrical and Functional Parts Si39-407 Model Parts Name Symbol Remark FXUQ71MV1 FXUQ100MV1 FXUQ125MV1 Wired Remote BRC1A61 Option Controller Remote Controller Wireless Remote BRC7C528W Option Controller AC 220~240V 50Hz 1φ45W 1φ90W Fan Motor Thermal protector 130°C : OFF 83°C : ON Thermal protector 130°C Motors AC220-240V (50Hz) AC220V (60Hz)

  • Page 320: Option List

    Si39-407 Option List Option List Option List of Controllers Operation Control System Optional Accessories Type FXLQ-M(H) FXCQ-M FXFQ-M FXZQ-M FXKQ-M FXDQ FXUQ-M FXSQ-M FXMQ-M FXHQ-M FXAQ-M(H) FXMQ-MF FXNQ-M Item Wireless BRC7C62 BRC7E61W BRC7E530W BRC4C61 BRC4C62 BRC7C528W BRC4C62 BRC7E63W BRC7E618 BRC4C62 —...

  • Page 321: System Configuration

    Option List Si39-407 System Configuration Part name Model No. Function Up to 64 groups of indoor units (128 units)can be connected, and ON/OFF, temperature Central remote controller DCS302C61 setting and monitoring can be accomplished individually or simultaneously. Connectable up to “2” controllers in one system. Up to 16 groups of indoor units (128 units) can be turned, ON/OFF individually or Unified ON/OFF controller DCS301B61...

  • Page 322: Option Lists (Outdoor Unit)

    Si39-407 Option List Option Lists (Outdoor Unit) RXYQ5MAY1 ~ 16MAY1 RXYQ12MAY1 RXYQ8MAY1 Optional accessories RXYQ5MAY1 RXYQ14MAY1 RXYQ10MAY1 RXYQ16MAY1 Cool/Heat Selector KRC19-26A Fixing box KJB111A KHRP26M22H, KHRP26M22H, KHRP26M22H, KHRP26M33H KHRP26M33H, KHRP26M33H, (Max. 4 branch) (Max. 4 branch) (Max. 4 branch) Refnet header (Max.

  • Page 323: Piping Installation Point

    Piping Installation Point Si39-407 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 324: The Example Of A Wrong Pattern

    Si39-407 Piping Installation Point 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 325: Selection Of Pipe Size, Joints And Header

    Selection of Pipe Size, Joints and Header Si39-407 Selection of Pipe Size, Joints and Header RXYQ5MAY1, RXYQ8MAY1, RXYQ10MAY1, RXYQ12MAY1, RXYQ14MAY1, RXYQ16MAY1 6.1.1 How to select the REFNET Joint How to select the REFNET Joint Select the REFNET Joint from the following table when using REFNET Joints at the first branch counted from the outdoor unit side.
  • Page 326 Si39-407 Selection of Pipe Size, Joints and Header 6.1.3 How to select the REFNET header When connecting the indoor unit larger than 250 or more, use with KHRP26M33T,M72T to upper stream side. (Do not connect downstream side) Select the proper REFNET Header using the following table based on the total capacity index of indoor units installed after the header.

  • Page 327: Rxyq18May1, Rxyq20May1, Rxyq22May1, Rxyq24May1

    Selection of Pipe Size, Joints and Header Si39-407 RXYQ18MAY1, RXYQ20MAY1, RXYQ22MAY1, RXYQ24MAY1, RXYQ26MAY1, RXYQ28MAY1, RXYQ30MAY1, RXYQ32MAY1, RXYQ34MAY1, RXYQ36MAY1, RXYQ38MAY1, RXYQ40MAY1, RXYQ42MAY1, RXYQ44MAY1, RXYQ46MAY1, RXYQ48MAY1 6.2.1 How to select the REFNET Joint How to select the REFNET Joint Select the REFNET Joint from the following table.When using REFNET Joints at the first branch counted from the outdoor unit side.
  • Page 328 Si39-407 Selection of Pipe Size, Joints and Header Wall thickness of refrigerant pipe (Unit : mm) Temper grade O Type 1/2H Type φ6.4 φ9.5 φ12.7 φ15.9 φ19.1 φ22.2 φ25.4 φ28.6 φ31.8 φ34.9 φ38.1 φ41.3 Copper tube O.D Copper tube W.T (Minimum 0.80 0.80...

  • Page 329: Outdoor Unit Multi Connection Piping Kit

    Selection of Pipe Size, Joints and Header Si39-407 6.2.6 Outdoor Unit Multi Connection Piping Kit Select the piping kit according to the No. of outdoor units No. of outdoor units Multi Connection Piping Kit BHFP22M90 2 units BHFP22M90P BHFP22M135 3 units BHFP22M135P 6.2.7 Piping between REFNET Joint and Indoor Unit Pipe size for direct connection to indoor unit must be the same as the connection size of indoor...

  • Page 330: Thermistor Resistance / Temperature Characteristics

    Si39-407 Thermistor Resistance / Temperature Characteristics Thermistor Resistance / Temperature Characteristics Indoor unit For air suction For liquid pipe For gas pipe Outdoor unit For outdoor air For coil For suction pipe For Receiver gas pipe (kΩ) T°C T°C 197.81 192.08 16.10 15.76...
  • Page 331 Thermistor Resistance / Temperature Characteristics Si39-407 Outdoor Unit Thermistors for Discharge Pipe (R3T) (kΩ)) T°C T°C T°C 640.44 624.65 72.32 70.96 13.35 13.15 609.31 594.43 69.64 68.34 12.95 12.76 579.96 565.78 67.06 65.82 12.57 12.38 552.00 538.63 64.60 63.41 12.20 12.01 525.63 512.97...

  • Page 332: Pressure Sensor

    Si39-407 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 333: Method Of Replacing The Inverter's Power Transistors And Diode Modules

    Method of Replacing The Inverter’s Power Transistors and Diode Modules Si39-407 0HWKRG RI 5HSODFLQJ 7KH ,QYHUWHU¶V 3RZHU 7UDQVLVWRUV DQG 'LRGH 0RGXOHV 0HWKRG RI 5HSODFLQJ 7KH ,QYHUWHU¶V 3RZHU 7UDQVLVWRUV DQG 'LRGH 0RGXOHV Inverter P.C.Board Inverter PC board (A2P) PC0409 Fasten Tab X11A Electronic circuit IGBT...
  • Page 334 Si39-407 Method of Replacing The Inverter’s Power Transistors and Diode Modules 3RZHU 7UDQVLVWRU ,*%7 2Q ,QYHUWHU 3& %RDUG 'HFLVLRQ ,I RWKHU WKDQ JLYHQ DERYH WKH SRZHU XQLW LV GHIHFWLYH DQG PXVW EH UHSODFHG 1RWH $ERYH ILJXUHV DUH PHDVXUHG E\ DQDORJXH WHVWHU 0DNH VXUH WR VHW ³7HVWHU 5DQJH´ WR ³[ N´ 'LRGH 0RGXOH 'HFLVLRQ ,I RWKHU WKDQ JLYHQ DERYH WKH GLRGH PRGXOH LV GHIHFWLYH DQG PXVW EH UHSODFHG...
  • Page 335 Method of Replacing The Inverter’s Power Transistors and Diode Modules Si39-407 Appendix...

  • Page 336: Part 8 Precautions For New Refrigerant (R410A)

    Si39-407 Part 8 Precautions for New Precautions for New Precautions for New Precautions for New Refrigerant (R410A) Refrigerant (R410A) Refrigerant (R410A) Refrigerant (R410A) 1. Precautions for New Refrigerant (R410A)...........326 1.1 Outline ....................326 1.2 Refrigerant Cylinders................328 1.3 Service Tools..................329 Precautions for New Refrigerant (R410)

  • Page 337: Precautions For New Refrigerant (R410A)

    Precautions for New Refrigerant (R410A) Si39-407 Precautions for New Refrigerant (R410A) Outline 1.1.1 About Refrigerant R410A Characteristics of new refrigerant, R410A 1. Performance Almost the same performance as R22 and R407C 2. Pressure Working pressure is approx. 1.4 times more than R22 and R407C. 3.
  • Page 338 Si39-407 Precautions for New Refrigerant (R410A) Thermodynamic characteristic of R410A 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 (R410)

  • Page 339: Refrigerant Cylinders

    Precautions for New Refrigerant (R410A) Si39-407 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 340: Service Tools

    Si39-407 Precautions for New Refrigerant (R410A) Service Tools R410A is used under higher working pressure, compared to previous refrigerants (R22,R407C). Furthermore, the refrigerating machine oil has been changed from Suniso oil to Ether oil, and if oil mixing is occurred, sludge results in the refrigerants and causes other problems. Therefore, gauge manifolds and charge hoses that are used with a previous refrigerant (R22,R407C) can not be used for products that use new refrigerants.
  • Page 341 Precautions for New Refrigerant (R410A) Si39-407 1. Flaring tool Flare gauge Specifications 2 Dimension A Unit:mm Tube O.D. −0.4 Nominal size Class-2 (R410A) Class-1 (Conventional) 6.35 9.52 13.2 13.0 12.70 16.6 16.2 15.88 19.7 19.4 19.05 24.0 23.3 Differences 2 Change of dimension A Dimension A For class-1: R407C For class-2: R410A...
  • Page 342 Si39-407 Precautions for New Refrigerant (R410A) 2. Torque wrench Specifications 2 Dimension B Unit:mm Nominal size Class-1 Class-2 Previous No change in tightening torque No change in pipes of other sizes Differences 2 Change of dimension B Only 1/2", 5/8" are extended For class-1: R407C For class-2: R410A Dimension B...
  • Page 343 Precautions for New Refrigerant (R410A) Si39-407 4. Leak tester Specifications 2 Hydrogen detecting type, etc. 2 Applicable refrigerants R410A, R407C, R404A, R507A, R134a, etc. Differences 2 Previous testers detected chlorine. Since HFCs do not contain chlorine, new tester detects hydrogen. 5.
  • Page 344 Si39-407 Precautions for New Refrigerant (R410A) 2 Temperature scale indicates the relationship between pressure and temperature in gas saturated state. Differences 2 Change in pressure 2 Change in service port diameter 7. Charge hose for R410A (Hose with ball valve) Specifications 2 Working pressure 5.08 MPa (51.8 kg/cm 2 Rupture pressure 25.4 MPa (259 kg/cm...
  • Page 345 Precautions for New Refrigerant (R410A) Si39-407 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 346: Index

    Si39-407 Index Index Index Index A0 .................182 E1 ................ 197 A1 .................183 E3 ................ 198 A3 .................184 E4 ................ 199 A6 .................186 E5 ................ 200 A7 .................187 E6 ................ 201 A9 .................189 E7 ................ 202 Abnormal Discharge Pipe Temperature ....206 E9 ................
  • Page 347 Si39-407 Malfunction of Transmission Between Indoor and Outdoor Units in the Same System ....237 L4 .................218 Malfunction of Transmission Between L5 .................219 Indoor Units ..........231 L8 .................220 Malfunction of Transmission Between L9 .................221 Inverter and Control PC Board ..... 222 LC .................222 Malfunction of Transmission Between List of Electrical and Functional Parts ....301...
  • Page 348 Si39-407 Selection of Pipe Size, Joints and Header ...314 Service Tools ............329 Setting by pushbutton switches ......139 Setting Contents and Code No......125 Setting of Low Noise Operation and Demand Operation ............153 Setting of Refrigerant Additional Charging Operation ........159 Special Control ............85 Specifications ............10 Indoor Units .............21 Outdoor Units ..........10...
  • Page 349 Si39-407 Index...

  • Page 350: Drawings & Flow Charts

    Si39-407 Drawings & Flow Charts Drawings & Flow Charts Drawings & Flow Charts Drawings & Flow Charts Field Setting from Outdoor Unit ......135 Mode changing procedure ......139 Abnormal Discharge Pipe Temperature ....206 Setting by dip switches ......... 137 Abnormal Outdoor Fan Motor Signal ....208 Freeze Prevention ..........
  • Page 351 Si39-407 Malfunction of Thermostat Sensor in Setting of Refrigerant Additional Remote Controller .........196 Charging Operation ........159 Malfunction of Transmission Between Check Operation ........... 161 Central Remote Controller and Simplified Remote Controller ......124 Indoor Unit ........241 BRC2A51 ............124 Malfunction of Transmission Between Indoor and Outdoor Units in the Same System ....237 Malfunction of Transmission Between...
  • Page 352 Printed in Singapore 03/2005 COS...

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