Page 1 SiE39-404 Service Manual R-410A Heat Pump 50Hz...
Page 2: Table Of Contents
SiE39-404 R410A Heat Pump 50Hz 1. Introduction .................... vi 1.1 Safety Cautions ..................vi 1.2 PREFACE ....................x Part 1 General Information ............1 1. Model Names of Indoor/Outdoor Units............2 2. External Appearance................3 2.1 Indoor Units ....................3 2.2 Outdoor Units ...................4 3.
Page 3 SiE39-404 3. Special Control..................85 3.1 Startup Control ..................85 3.2 Oil Return Operation ................86 3.3 Defrosting Operation ................88 3.4 Pump-down Residual Operation ............89 3.5 Restart Standby..................90 3.6 Stopping Operation ................91 3.7 Pressure Equalization prior to Startup............93 4. Protection Control .................94 4.1 High Pressure Protection Control............94 4.2 Low Pressure Protection Control............95 4.3 Discharge Pipe Protection Control ............96 4.4 Inverter Protection Control ..............97...
Page 4 SiE39-404 2.5 “A7” Indoor Unit: Malfunction of Swing Flap Motor (MA) .......178 2.6 “A9” Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (20E) ............180 2.7 “AF” Indoor Unit: Drain Level above Limit..........182 2.8 “AJ” Indoor Unit: Malfunction of Capacity Determination Device ..183 2.9 “C4”...
Page 5 SiE39-404 2.47 “U9” Malfunction of Transmission Between Indoor and Outdoor Units in the Same System ............228 2.48 “UA” Excessive Number of Indoor Units ..........230 2.49 “UC” Address Duplication of Central Remote Controller ......231 2.50 “UE” Malfunction of Transmission Between Central Remote Controller and Indoor Unit ..............232 2.51 “UF”...
Page 6 SiE39-404 4. Option List ...................301 4.1 Option List of Controllers..............301 4.2 Option Lists (Outdoor Unit)..............303 5. Piping Installation Point...............304 5.1 Piping Installation Point ................304 5.2 The Example of A Wrong Pattern............305 6. Selection of Pipe Size, Joints and Header ..........306 6.1 RXYQ5MY1B, RXYQ8MY1B, RXYQ10MY1B, RXYQ12MY1B, RXYQ14MY1B, RXYQ16MY1B ..................306...
Page 7: Introduction
Introduction SiE39-404 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. Warnings The caution items are classified into “ Warning” and “ Caution”. The “ Warning” items are especially important since they can lead to death or serious injury if they are not followed closely.
Page 8 SiE39-404 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 SiE39-404 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 SiE39-404 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 2004 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
SiE39-404 Part 1 General Information 1. Model Names of Indoor/Outdoor Units............2 2. External Appearance................3 2.1 Indoor Units ....................3 2.2 Outdoor Units ...................4 3. Combination of Outdoor Units..............5 4. Model Selection..................6 General Information...
Page 13: Model Names Of Indoor/Outdoor Units
Model Names of Indoor/Outdoor Units SiE39-404 1. Model Names of Indoor/Outdoor Units Indoor Units Type Model Name Power Supply Ceiling Mounted FXCQ — 125M — — Cassette Type (Double Flow) Ceiling Mounted FXZQ — — — — — — Cassette Type (Multi Flow) 600×600 Ceiling Mounted Cassette Type...
Page 14: External Appearance
SiE39-404 External Appearance 2. External Appearance Indoor Units Ceiling Mounted Cassette Type (Double Flow) Wall Mounted Type FXCQ20M FXAQ20M FXCQ25M FXAQ25M FXCQ32M FXAQ32M FXCQ40M FXAQ40M FXCQ50M FXAQ50M FXCQ63M FXAQ63M FXCQ80M FXCQ125M Ceiling Mounted Cassette Floor Standing Type Type (Multi Flow) 600×600 FXLQ20M(H) FXLQ25M(H)
Page 15: Outdoor Units
External Appearance SiE39-404 Outdoor Units RXYQ5M RXYQ8M, 10M RXYQ12M, 14M, 16M 8,10HP 12,14,16HP RXYQ18M, 20M RXYQ22M, 24M, 26M 18, 20HP 22, 24, 26HP RXYQ28M, 30M , 32M RXYQ34M, 36M 28, 30, 32HP 34, 36HP RXYQ38M, 40M , 42M RXYQ44M, 46M, 48M 38, 40, 42HP 44, 46, 48HP General Information...
Page 16: Combination Of Outdoor Units
20HP 22HP 24HP 26HP 28HP 30HP 32HP 34HP Heat Pump: BHFP22M135+BHFP22M135P 36HP 38HP 40HP 42HP 44HP 46HP 48HP Note: For multiple connection of 18HP systems or more, an optional Daikin outdoor unit multi connection piping kit is required. General Information...
Page 17: Model Selection
Model Selection SiE39-404 4. Model Selection VRV II Heat Pump Series Connectable indoor units number and capacity 10HP 12HP 14HP 16HP System name RXYQ5M RXYQ8M RXYQ10M RXYQ12M RXYQ14M RXYQ16M Outdoor unit 1 RXYQ5M RXYQ8M RXYQ10M RXYQ12M RXYQ14M RXYQ16M Outdoor unit 2 –...
Page 18 SiE39-404 Model Selection Connectable Indoor Unit Type Model Name Power Supply Ceiling Mounted FXCQ — 125M — — Cassette Type (Double Flow) Ceiling Mounted FXZQ — — — — — — Cassette Type (Multi Flow) 600×600 Ceiling Mounted FXFQ — 100M 125M —...
Page 19 Model Selection SiE39-404 General Information...
Page 20: Part 2 Specifications
SiE39-404 Part 2 Specifications 1. Specifications ..................10 1.1 Outdoor Units ..................10 1.2 Indoor Units ....................21 Specifications...
Page 21: Specifications
Specifications SiE39-404 1. Specifications Outdoor Units Model Name RXYQ5MY1B RXYQ8MY1B kcal / h 12,500 20,000 H1 Cooling Capacity (19.5°CWB) Btu / h 49,500 78,900 14.5 23.1 H2 Cooling Capacity (19.0°CWB) 14.0 22.4 kcal / h 13,800 21,500 H3 Heating Capacity Btu / h 54,600 85,400...
Page 22 SiE39-404 Specifications Model Name RXYQ10MY1B RXYQ12MY1B kcal / h 25,000 30,000 H1 Cooling Capacity (19.5°CWB) Btu / h 98,700 118,000 28.9 34.6 H2 Cooling Capacity (19.0°CWB) 28.0 33.5 kcal / h 27,000 32,300 H3 Heating Capacity Btu / h 108,000 128,000 31.5 37.5...
Page 23 Specifications SiE39-404 Model Name RXYQ14MY1B RXYQ16MY1B kcal / h 35,500 40,000 H1 Cooling Capacity (19.5°CWB) Btu / h 141,000 157,000 41.3 45.9 H2 Cooling Capacity (19.0°CWB) 40.0 44.5 kcal / h 38,700 43,000 H3 Heating Capacity Btu / h 154,000 171,000 45.0 50.0...
Page 24 SiE39-404 Specifications Model Name (Combination Unit) RXYQ18MY1B RXYQ20MY1B Model Name (Independent Unit) RXYQ8MY1B+RXYQ10MY1B RXYQ10MY1B+RXYQ10MY1B kcal / h 45,000 50,000 H1 Cooling Capacity (19.5°CWB) Btu / h 178,000 197,000 52.0 57.8 H2 Cooling Capacity (19.0°CWB) 50.4 56.0 kcal / h 48,500 54,000 H3 Heating Capacity Btu / h...
Page 25 Specifications SiE39-404 Model Name (Combination Unit) RXYQ22MY1B RXYQ24MY1B Model Name (Independent Unit) RXYQ10MY1B+RXYQ12MY1B RXYQ10MY1B+RXYQ14MY1B kcal / h 55,000 60,500 H1 Cooling Capacity (19.5°CWB) Btu / h 217,000 240,000 63.5 70.2 H2 Cooling Capacity (19.0°CWB) 61.5 68.0 kcal / h 59,300 65,700 H3 Heating Capacity Btu / h...
Page 26 SiE39-404 Specifications Model Name (Combination Unit) RXYQ26MY1B RXYQ28MY1B Model Name (Independent Unit) RXYQ10MY1B+RXYQ16MY1B RXYQ12MY1B+RXYQ16MY1B kcal / h 65,000 70,000 H1 Cooling Capacity (19.5°CWB) Btu / h 256,000 275,000 74.9 80.5 H2 Cooling Capacity (19.0°CWB) 72.5 78.0 kcal / h 70,000 75,300 H3 Heating Capacity Btu / h...
Page 27 Specifications SiE39-404 Model Name (Combination Unit) RXYQ30MY1B RXYQ32MY1B Model Name (Independent Unit) RXYQ14MY1B+RXYQ16MY1B RXYQ16MY1B+RXYQ16MY1B kcal / h 75,500 80,000 H1 Cooling Capacity (19.5°CWB) Btu / h 298,000 314,000 87.2 91.9 H2 Cooling Capacity (19.0°CWB) 84.5 89.0 kcal / h 81,700 86,000 H3 Heating Capacity Btu / h...
Page 28 SiE39-404 Specifications Model Name (Combination Unit) RXYQ34MY1B RXYQ36MY1B Model Name (Independent Unit) RXYQ10MY1B+RXYQ10MY1B+RXYQ14MY1B RXYQ10MY1B+RXYQ10MY1B+RXYQ16MY1B kcal / h 85,500 90,000 H1 Cooling Capacity (19.5°CWB) Btu / h 338,000 354,000 99.1 H2 Cooling Capacity (19.0°CWB) 96.0 kcal / h 92,700 97,000 H3 Heating Capacity Btu / h 370,000 387,000...
Page 29 Specifications SiE39-404 Model Name (Combination Unit) RXYQ38MY1B RXYQ40MY1B Model Name (Independent Unit) RXYQ10MY1B+RXYQ12MY1B+RXYQ16MY1B RXYQ10MY1B+RXYQ14MY1B+RXYQ16MY1B kcal / h 95,000 101,000 H1 Cooling Capacity (19.5°CWB) Btu / h 374,000 397,000 H2 Cooling Capacity (19.0°CWB) kcal / h 102,000 109,000 H3 Heating Capacity Btu / h 407,000 433,000...
Page 30 SiE39-404 Specifications Model Name (Combination Unit) RXYQ42MY1B RXYQ44MY1B Model Name (Independent Unit) RXYQ10MY1B+RXYQ16MY1B+RXYQ16MY1B RXYQ12MY1B+RXYQ16MY1B+RXYQ16MY1B kcal / h 105,000 110,000 H1 Cooling Capacity (19.5°CWB) Btu / h 413,000 432,000 H2 Cooling Capacity (19.0°CWB) kcal / h 113,000 118,000 H3 Heating Capacity Btu / h 450,000 470,000...
Page 31 Specifications SiE39-404 Model Name (Combination Unit) RXYQ46MY1B RXYQ48MY1B Model Name (Independent Unit) RXYQ14MY1B+RXYQ16MY1B+RXYQ16MY1B RXYQ16MY1B+RXYQ16MY1B+RXYQ16MY1B kcal / h 116,000 120,000 H1 Cooling Capacity (19.5°CWB) Btu / h 455,000 471,000 H2 Cooling Capacity (19.0°CWB) kcal / h 125,000 129,000 H3 Heating Capacity Btu / h 496,000 513,000...
Page 32: Indoor Units
SiE39-404 Specifications Indoor Units Ceiling Mounted Cassette Type (Double Flow) Model FXCQ20MVE FXCQ25MVE FXCQ32MVE FXCQ40MVE kcal/h 2,000 2,500 3,150 4,000 H1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 15,900 H2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 4,300 H3 Heating Capacity Btu/h 8,500 10,900...
Page 33 Specifications SiE39-404 Ceiling Mounted Cassette Type (Double Flow) Model FXCQ50MVE FXCQ63MVE FXCQ80MVE FXCQ125MVE kcal/h 5,000 6,300 8,000 12,500 H1 Cooling Capacity (19.5°CWB) Btu/h 19,900 25,000 31,800 49,600 14.5 H2 Cooling Capacity (19.0°CWB) 14.0 kcal/h 5,400 6,900 8,600 13,800 H3 Heating Capacity Btu/h 21,500 27,300...
Page 34 SiE39-404 Specifications Ceiling Mounted Cassette Type (Multi Flow) 600×600 Model FXZQ20MVE FXZQ25MVE FXZQ32MVE kcal/h 2,000 2,500 3,150 H1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 H2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 H3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Galvanized Steel Plate Galvanized Steel Plate...
Page 35 Specifications SiE39-404 Ceiling Mounted Cassette Type (Multi Flow) 600×600 Model FXZQ40MVE FXZQ50MVE kcal/h 4,000 5,000 H1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 H2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 H3 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 SiE39-404 Specifications Ceiling Mounted Cassette Type (Multi-flow) Model FXFQ25MVE FXFQ32MVE FXFQ40MVE FXFQ50MVE kcal/h 2,500 3,150 4,000 5,000 H1 Cooling Capacity (19.5°CWB) Btu/h 9,900 12,500 15,900 19,900 H2 Cooling Capacity (19.0°CWB) kcal/h 2,800 3,400 4,300 5,400 H3 Heating Capacity Btu/h 10,900 13,600 17,000 21,500...
Page 37 Specifications SiE39-404 Ceiling Mounted Cassette Type (Multi-flow) Model FXFQ63MVE FXFQ80MVE FXFQ100MVE FXFQ125MVE kcal/h 6,300 8,000 10,000 12,500 H1 Cooling Capacity (19.5°CWB) Btu/h 25,000 31,800 39,700 49,600 11.6 14.5 H2 Cooling Capacity (19.0°CWB) 11.2 14.0 kcal/h 6,900 8,600 10,800 13,800 H3 Heating Capacity Btu/h 27,300 34,100...
Page 38 SiE39-404 Specifications Ceiling Mounted Cassette Corner Type Model FXKQ25MVE FXKQ32MVE FXKQ40MVE FXKQ63MVE kcal/h 2,500 3,150 4,000 6,300 H1 Cooling Capacity (19.5°CWB) Btu/h 9,900 12,500 15,900 25,000 H2 Cooling Capacity (19.0°CWB) kcal/h 2,800 3,400 4,300 6,900 H3 Heating Capacity Btu/h 10,900 13,600 17,000 27,300...
Page 39 Specifications SiE39-404 Slim Ceiling Mounted Duct Type Model FXDQ20NVE FXDQ25NVE FXDQ32NVE kcal/h 2,000 2,500 3,150 H1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 H2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 H3 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 SiE39-404 Specifications Slim Ceiling Mounted Duct Type Model FXDQ40NVE FXDQ50NVE FXDQ63NVE kcal/h 4,000 5,000 6,300 H1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 H2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 H3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Color Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate...
Page 41 Specifications SiE39-404 Ceiling Mounted Built-in Type Model FXSQ20MVE FXSQ25MVE FXSQ32MVE kcal/h 2,000 2,500 3,150 H1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 H2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 H3 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 SiE39-404 Specifications Ceiling Mounted Built-in Type Model FXSQ40MVE FXSQ50MVE FXSQ63MVE kcal/h 4,000 5,000 6,300 H1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 H2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 H3 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 SiE39-404 Ceiling Mounted Built-in Type Model FXSQ80MVE FXSQ100MVE FXSQ125MVE kcal/h 8,000 10,000 12,500 H1 Cooling Capacity (19.5°CWB) Btu/h 31,800 39,700 49,600 11.6 14.5 H2 Cooling Capacity (19.0°CWB) 11.2 14.0 kcal/h 8,600 10,800 13,800 H3 Heating Capacity Btu/h 34,100 42,700 54,600 10.0 12.5...
Page 44 SiE39-404 Specifications Ceiling Mounted Duct Type Model FXMQ40MVE FXMQ50MVE FXMQ63MVE FXMQ80MVE kcal/h 4,000 5,000 6,300 8,000 H1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 31,800 H2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 8,600 H3 Heating Capacity Btu/h 17,000 21,500 27,300 34,100 10.0...
Page 45 Specifications SiE39-404 Ceiling Mounted Duct Type Model FXMQ100MVE FXMQ125MVE FXMQ200MVE FXMQ250MVE kcal/h 10,000 12,500 20,000 25,000 H1 Cooling Capacity (19.5°CWB) Btu/h 39,700 49,600 79,000 99,000 11.6 14.5 23.0 28.8 H2 Cooling Capacity (19.0°CWB) 11.2 14.0 22.4 28.0 kcal/h 10,800 13,800 21,500 27,000 H3 Heating Capacity...
Page 46: Ceiling Suspended Type
SiE39-404 Specifications Ceiling Suspended Type Model FXHQ32MVE FXHQ63MVE FXHQ100MVE kcal/h 3,150 6,300 10,000 H1 Cooling Capacity (19.5°CWB) Btu/h 12,500 25,000 39,700 11.6 H2 Cooling Capacity (19.0°CWB) 11.2 kcal/h 3,400 6,900 10,800 H3 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 SiE39-404 Wall Mounted Type Model FXAQ20MVE FXAQ25MVE FXAQ32MVE kcal/h 2,000 2,500 3,150 H1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 H2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 H3 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 SiE39-404 Specifications Wall Mounted Type Model FXAQ40MVE FXAQ50MVE FXAQ63MVE kcal/h 4,000 5,000 6,300 H1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 H2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 H3 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 SiE39-404 Floor Standing Type Model FXLQ20MVE FXLQ25MVE FXLQ32MVE kcal/h 2,000 2,500 3,150 H1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 H2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 H3 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 SiE39-404 Specifications Floor Standing Type Model FXLQ40MVE FXLQ50MVE FXLQ63MVE kcal/h 4,000 5,000 6,300 H1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 H2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 H3 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 SiE39-404 Concealed Floor Standing Type Model FXNQ20MVE FXNQ25MVE FXNQ32MVE kcal/h 2,000 2,500 3,150 H1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 H2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 H3 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 SiE39-404 Specifications Concealed Floor Standing Type Model FXNQ40MVE FXNQ50MVE FXNQ63MVE kcal/h 4,000 5,000 6,300 H1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 H2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 H3 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 SiE39-404 Ceiling Suspended Cassette Type Indoor Unit FXUQ71MV1 FXUQ100MV1 FXUQ125MV1 Model Connection Unit BEVQ71MVE BEVQ140MVE BEVQ140MVE kcal/h 7,100 10,000 12,500 H1 Cooling Capacity (19.5°CWB) Btu/h 28,200 39,700 49,600 11.6 14.5 H2 Cooling Capacity (19.0°CWB) 11.2 14.0 kcal/h 7,700 10,800 13,800 H3 Heating Capacity Btu/h...
Page 54 SiE39-404 Specifications Wall Mounted Type Model FXAQ20MHV1 FXAQ25MHV1 FXAQ32MHV1 kcal/h 2,000 2,500 3,150 H1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 H2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 H3 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 SiE39-404 Wall Mounted Type Model FXAQ40MHV1 FXAQ50MHV1 kcal/h 4,000 5,000 H1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 H2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 H3 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 SiE39-404 Specifications Floor Standing Type Model FXLQ20MHV1 FXLQ25MHV1 FXLQ32MHV1 kcal/h 2,000 2,500 3,150 H1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 H2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 H3 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 SiE39-404 Floor Standing Type Model FXLQ40MHV1 FXLQ50MHV1 kcal/h 4,000 5,000 H1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 H2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 H3 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 SiE39-404 Specifications Outdoor Air Processing Unit Model FXMQ125MFV1 FXMQ200MFV1 FXMQ250MFV1 kcal/h 12,000 19,300 24,100 H1 Cooling Capacity Btu/h 47,800 76,500 95,600 14.0 22.4 28.0 kcal/h 7,700 12,000 15,000 H1 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 SiE39-404 Specifications...
Page 60: Part 3 Refrigerant Circuit
SiE39-404 Part 3 Refrigerant Circuit 1. Refrigerant Circuit .................50 1.1 RXYQ5M ( Products after January, 2004)...........50 1.2 RXYQ8, 10, 12M ( Products after January, 2004).......52 1.3 RXYQ14, 16M ( Products after January, 2004) ........54 1.4 Outdoor air processing unit FXMQ125~250MFV1 .........56 2.
Page 61: Refrigerant Circuit
Refrigerant Circuit SiE39-404 1. Refrigerant Circuit RXYQ5M ( Products after January, 2004) 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 SiE39-404 Refrigerant Circuit RXYQ5M Filter Solenoid valve Heat exchanger pipe Filter Solenoid valve Filter Filter Electronic Capillary expansion valve tube Heat exchanger Four way valve High pressure Pressure sensor regulating valve Filter High pressure switch Filter Compressor Capillary Solenoid tube valve Low pressure sensor...
Page 63: Rxyq8, 10, 12M ( Products After January, 2004)
Refrigerant Circuit SiE39-404 RXYQ8, 10, 12M ( Products after January, 2004) 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 SiE39-404 Refrigerant Circuit RXYQ8, 10, 12M Solenoid Capillary Check valve tube Filter valve Heat exchanger pipe Filter Electronic Filter expansion valve Filter Pressure regulating valve Electronic expansion Check valve valve Solenoid valve Check valve Heat exchanger Four way valve Pressure High pressure regulating sensor...
Page 65: Rxyq14, 16M ( Products After January, 2004)
Refrigerant Circuit SiE39-404 RXYQ14, 16M ( Products after January, 2004) 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 SiE39-404 Refrigerant Circuit RXYQ14, 16M Solenoid Capillary Check valve tube Filter valve Heat exchanger Filter pipe Electronic Filter expansion valve Filter Pressure regulatin valve Electronic expansion Check valve valve Solenoid valve Check valve Heat exchanger Four way valve Pressure High pressure regulatin sensor valve...
Page 67: Outdoor Air Processing Unit Fxmq125~250Mfv1
Refrigerant Circuit SiE39-404 Outdoor air processing unit FXMQ125~250MFV1 1.4.1 Refrigerant System Gas pipe connection port Heat exchanger Filter Capillary tube Distributor Solenoid valve Liquid pipe connection port Check valve Filter Filter Electronic expansion valve 4D018650B Main Control Equipment Code Symbol Name Main function Used to control the flow rate of refrigerant, and...
Page 68: Functional Parts Layout
SiE39-404 Functional Parts Layout 2. Functional Parts Layout RXYQ5M Plan High pressur switch (High pressure protection INV) S1PH Thermistor (INV discharge pipe) Front View Fan motor Solenoid valve (Hot gas bypass) Solenoid valve Pressure sensor (Receiver gas discharchgin) (High pressure) S1NPH Solenoid valve (Injection) Y4S 4 way valve...
Page 69: Rxyq8, 10, 12M
Functional Parts Layout SiE39-404 RXYQ8, 10, 12M Plan High pressure switch Solenoid valve (High pressure protection INV) (oil equalizing of multi outdoor unit system) S1PH High pressure switch (High pressure protection STD1) S2PH Front View Fan motor Solenoid valve (Hot gas bypass) Solenoid valve (Receiver gas discharge) Pressure sensor...
Page 70: Rxyq14, 16M
SiE39-404 Functional Parts Layout RXYQ14, 16M Plan Solenoid valve (Oil equalizing of multi outdoor system) High pressure switch High pressure switch High pressure switch (High pressure protection INV) (High pressure protection STD1) (High pressure protection STD2) S1PH S2PH S3PH Front View Fan motor Solenoid valve Pressure sensor...
Page 71: Refrigerant Flow For Each Operation Mode
Refrigerant Flow for Each Operation Mode SiE39-404 3. Refrigerant Flow for Each Operation Mode RXYQ5M Cooling Operation Indoor unit operation Fan ON 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 72 SiE39-404 Refrigerant Flow for Each Operation Mode Cooling Oil Return Operation Indoor unit operation Fan ON Fan OFF 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 EXV : Normal control...
Page 73 Refrigerant Flow for Each Operation Mode SiE39-404 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 Low temperature, low pressure EXV : 512 pls...
Page 74 SiE39-404 Refrigerant Flow for Each Operation Mode Heating Operation Indoor unit operation Fan ON Fan LL 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 Electronic Electronic...
Page 75 Refrigerant Flow for Each Operation Mode SiE39-404 RXYQ8, 10, 12M Cooling Operation Indoor unit operation Fan ON 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 Electronic...
Page 76 SiE39-404 Refrigerant Flow for Each Operation Mode Cooling Oil Return Indoor unit operation Fan ON Fan OFF 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 EXV : 200 pls EXV : 200 pls...
Page 77 Refrigerant Flow for Each Operation Mode SiE39-404 Heating Oil Return & Defrost 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 Low temperature, low pressure EXV : 512 pls...
Page 78 SiE39-404 Refrigerant Flow for Each Operation Mode Heating Operation Indoor unit operation Fan ON Fan LL Fan OFF Heat exchanger Heat exchanger Heat exchanger High temperature, high pressure gas High temperature, high pressure liquid Low temperature, low pressure Electronic expansion valve Electronic expansion valve Electronic expansion valve Filter...
Page 79 Refrigerant Flow for Each Operation Mode SiE39-404 RXYQ14, 16M Cooling Operation Indoor unit operation Fan ON 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 Electronic...
Page 80 SiE39-404 Refrigerant Flow for Each Operation Mode Cooling Oil Return Operation Indoor unit operation Fan ON Fan OFF 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 EXV : Normal control...
Page 81 Refrigerant Flow for Each Operation Mode SiE39-404 Heating Oil Return & Defrost Operation Indoor unit operation Fan OFF Fan OFF " ON " " OFF " Fan OFF " ON " Heat exchanger Heat exchanger Heat exchanger High temperature, high pressure gas High temperature, high pressure liquid Low temperature, low pressure EXV : 512 pls...
Page 82 SiE39-404 Refrigerant Flow for Each Operation Mode Heating Operation Indoor unit operation Fan ON Fan LL Fan OFF Fan OFF Heat exchanger Heat exchanger Heat exchanger High temperature, high pressure gas High temperature, high pressure liquid Low temperature, low pressure Electronic expansion valve Electronic expansion valve Electronic expansion valve...
Page 83 Refrigerant Flow for Each Operation Mode SiE39-404 Refirgerant Circuit...
Page 84: Part 4 Function
SiE39-404 Part 4 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 Cooling Operation Fan Control...............84 3. Special Control..................85 3.1 Startup Control ..................85 3.2 Oil Return Operation ................86 3.3 Defrosting Operation ................88 3.4 Pump-down Residual Operation ............89...
Page 85: Function General
Function general SiE39-404 1. Function general Symbol Symbol Electric symbol Description or function 20S1 Four way valve (Energize during heating) – Discharge pie superheat DSHi – Discharge pie superheat of inverter compressor DSHs – Discharge pie superheat of standard compressor –...
Page 86: Operation Mode
SiE39-404 Function general Operation Mode Operation in Operation in stop mode stop mode Indoor unit stop or Indoor unit stop or Indoor unit thermostat ON thermostat OFF thermostat OFF Malfunction/Standby Restart standby Pressure (Compressor stop) equalization prior to startup Malfunction/ Standby Indoor unit stop or thermostat OFF...
Page 87: Basic Control
Basic Control SiE39-404 2. Basic Control Normal Operation Cooling Operation Actuator Operation Remarks Used for high pressure protection control, low pressure protection control, discharge pipe Compressor Compressor PI control temperature protection control, and compressor operating frequency upper limit control with inverter protection control.
Page 88: Compressor Pi Control
SiE39-404 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 SiE39-404 Compressor Operating Priority 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 SiE39-404 Basic Control RXYQ5M RXYQ8,10,12M RXYQ14,16M STEP STEP STD1 STEP STD1 STD2 52Hz 52Hz 52Hz 57Hz 57Hz 57Hz 62Hz 62Hz 62Hz 68Hz 68Hz 68Hz 74Hz 74Hz 74Hz 81Hz 81Hz 81Hz 88Hz 88Hz 88Hz 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 110Hz 110Hz 110Hz 116Hz...
Page 91 Basic Control SiE39-404 RXYQ30,32M RXYQ34,36,38M 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 SiE39-404 Basic Control RXYQ40,42,44M 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 SiE39-404 RXYQ46,48M 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
SiE39-404 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: Cooling Operation Fan Control
Basic Control SiE39-404 Cooling Operation Fan Control In cooling operation with low outdoor air temperature, this control is used to provide the adequate amount of circulation air with liquid pressure secured by high pressure control using outdoor unit fan. STEP9 Pc: HP pressure sensor detection value Pc<2.8MPa Pc>3.3MPa...
Page 96: Special Control
SiE39-404 Special Control 3. Special Control Startup Control 3.1.1 Startup Control in Cooling Operation Actuator Operation Remarks Compressor operating frequency Compressor Differential pressure control increases by 1 step / 20 sec until Pc - Pe>0.4 MPa. Initial compressor operating frequency is set to STEP 1.
Page 97: Oil Return Operation
Special Control SiE39-404 Oil Return Operation 3.2.1 Oil Return Operation in Cooling Operation Oil return preparation Outdoor unit actuator Oil return operation Post-oil-return operation operation Compressor Upper limit control 124 Hz + ON + OFF 52 Hz + OFF + OFF Outdoor unit fan Fan control Fan control...
Page 98 SiE39-404 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 STEP8 Outdoor unit fan...
Page 99: Defrosting Operation
Special Control SiE39-404 Defrosting Operation Defrost preparation Outdoor unit actuator Defrost operation Post Defrost operation operation 1-step increase from Compressor Upper limit control 143 Hz + ON + ON (74 Hz + OFF + OFF) to (Pc - Pe>0.4 MPa) STEP8 Outdoor unit fan STEP9...
Page 100: Pump-Down Residual Operation
SiE39-404 Special Control Pump-down Residual Operation 3.4.1 Pump-down Residual Operation in Cooling Operation Actuator Master unit operation Slave unit operation Compressor 210 Hz + OFF + OFF Outdoor unit fan Fan control Four way valve Main motorized valve (EV1) 1400 pls 0 pls Subcooling motorized valve (EV2) 0 pls...
Page 101: Restart Standby
Special Control SiE39-404 Restart Standby Actuator Operation Remarks ⎯ Compressor Ta>30°C: STEP5 ⎯ Outdoor unit fan Ta≤30°C: OFF ⎯ Four way valve Holds ON ⎯ Main motorized valve (EV1) 0 pls ⎯ Subcooling motorized valve (EV2) 0 pls In the case of RXYQ5M , this valve Hot gas bypass valve (SVP) turns ON.
Page 102: Stopping Operation
SiE39-404 Special Control Stopping Operation 3.6.1 When System is in Stop Mode 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) Oil equalization valve (SVO) Receiver gas discharging valve (SVG) Non-operating unit liquid pipe stop valve (SVSL)
Page 103 Special Control SiE39-404 3.6.2 Stopping Operation of Slave Units During Master Unit is in Operation With Multi-Outdoor-Unit System In cooling operation: The system operates in Mode A or Mode B listed in the table below. Actuator Mode-A operation Mode-B operation Compressor Outdoor unit fan STEP4...
Page 104: Pressure Equalization Prior To Startup
SiE39-404 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 SiE39-404 4. 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
SiE39-404 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 SiE39-404 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
SiE39-404 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 SiE39-404 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 Demand to operate. CT detection current value>A 200- V unit 400- V unit for more than 3 sec.
Page 110: Other Control
SiE39-404 Other Control 5. 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 SiE39-404 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 "For making a compressor unable to operate due to malfunction, etc., be sure to conduct the work with emergency operation setting.
Page 112 SiE39-404 Other Control • With RXYQ14M and 16M, if INV compressor is inhibited from operating, only 1 STD compressor can operate for reasons of oil equalization. • With RXYQ14M and 16M, STD1 compressor cannot be inhibited from operating for reasons of oil equalization.
Page 113: Demand Operation
Other Control SiE39-404 • To inhibit the slave unit 2 from operating → Set LED display (7:ON 7:OFF 9:Blink) setting mode 2 from No. 40 to No. 2. H1P---H7P (Procedure) 7777777 (1) Press and hold the MODE button (BS1) for 5 sec. or more.
Page 114: Outline Of Control (Indoor Unit)
SiE39-404 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 Remote control “A3”...
Page 115: Remote Controller
Outline of Control (Indoor Unit) SiE39-404 6.1.3 When the Float Switch is Tripped During Heating Operation: Remote control “A3” flashing malfunction stop Thermostat (running) Humidifier Reset Float switch Drain pump 5 min. 5 sec. 5 min. 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.
Page 116: Louver Control For Preventing Ceiling Dirt
SiE39-404 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) SiE39-404 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 SiE39-404 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: Freeze Prevention
Outline of Control (Indoor Unit) SiE39-404 Freeze Prevention Freeze When the temperature detected by liquid pipe temperature thermistor (R2T) of the indoor unit Prevention by Off heat exchanger drops too low, the unit enters freeze prevention operation in accordance with the following conditions, and is also set in accordance with the conditions given below.
Page 120: Control Of Outdoor Air Processing Unit (Unique Control For Outdoor Air Processing Unit)
SiE39-404 Outline of Control (Indoor Unit) Control of outdoor air Processing unit (Unique Control for Outdoor Air Processing Unit) 6.5.1 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 121 Outline of Control (Indoor Unit) SiE39-404 6.5.2 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 122 SiE39-404 Outline of Control (Indoor Unit) (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 123 Outline of Control (Indoor Unit) SiE39-404 (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. <Heating> Discharge air temp. T4 – Target discharge air temp. Ts >5 degree continue for 5 &...
Page 124: Part 5 Test Operation
SiE39-404 Part 5 Test Operation 1. Test Operation ..................114 1.1 Procedure and Outline .................114 1.2 Operation When Power is Turned On ..........117 2. Outdoor Unit PC Board Layout ............118 3. Field Setting ..................119 3.1 Field Setting from Remote Controller ...........119 3.2 Field Setting from Outdoor Unit............132 Test Operation...
Page 125: Test Operation
Test Operation SiE39-404 1. 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. Are the designated wires used? 2Power wiring Is the grounding work completed?
Page 126 SiE39-404 Test Operation 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.) The test operation is started automatically. Press and hold the TEST ⎧...
Page 127 Test Operation SiE39-404 1.1.4 Confirmation on normal operation • Conduct normal unit operation after the check operation has been completed. (When outdoor air temperature is 24ºC or higher, the unit can not be operated with heating mode. See the instruction manual attached.) Confirm that the indoor/outdoor units can be operated normally.
Page 128: Operation When Power Is Turned On
SiE39-404 Test Operation Operation When Power is Turned On 1.2.1 When Turning On Power First Time The unit cannot be run for up to 12 minutes to automatically set the master power and address (indoor-outdoor address, etc.). Status Outdoor unit Test lamp H2P ..
Page 129: Outdoor Unit Pc Board Layout
Outdoor Unit PC Board Layout SiE39-404 2. Outdoor Unit PC Board Layout Outdoor unit PC board (2) Set mode display (LED) (3) Mode setting switch H1P H2P H3P H4P H5P H6P H7P B S2 B S4 MODE RETURN TEST RESET (1) Microcomputer normal monitor 1 2 3 4 1 2 3 4...
Page 130: Field Setting
SiE39-404 Field Setting 3. 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 131 Field Setting SiE39-404 3.1.2 Wireless Remote Controller - Indoor Unit BRC7C type MODE NO. FIELD SET MODE SECOND CODE NO. FIRST CODE NO. 1, 6 (V2770) 1. When in the normal mode, push the button for 4 seconds or more, and operation then enters the “field set mode.”...
Page 132 SiE39-404 Field Setting 3.1.3 Simplified Remote Controller BRC2A51 MODE NO. FIRST CODE NO. UNIT NO. SECOND CODE NO. (V0294) 1. Remove the upper part of remote controller. 2. When in the normal mode, press the [BS6] BUTTON (2) (field set), and the FIELD SET MODE is entered.
Page 133 Field Setting SiE39-404 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 134 SiE39-404 Field Setting 3.1.5 Applicable range of Field setting Ceiling mounted cassette type Slim Ceiling Ceiling Ceiling Wall Floor Concealed Outdoor Ceiling mounted mounted suspended mounted standing Floor Ceiling Multi Double Corner mounted built-in duct type type type standing suspended processing flow flow...
Page 135: Detailed Explanation Of Setting Modes
Field Setting SiE39-404 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 136 SiE39-404 Field Setting 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 137 Field Setting SiE39-404 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 138 SiE39-404 Field Setting 3.1.7 Outdoor Air Processing Unit-Field Setting (Remote Controller) Setting Setting position No. Mode Setting contents Stain of filter 2500hr 1250hr — — — — — — — — — — — — — Filtering (20) time Display —...
Page 139 Field Setting SiE39-404 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 140 SiE39-404 Field Setting BRC7C Type Group No. setting by wireless remote controller for centralized control 1. When in the normal mode, push button for 4 seconds or more, and operation then enters the “field set mode.” 2. Set mode No. “00” with button.
Page 141 Field Setting SiE39-404 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 142 SiE39-404 Field Setting How to Select Whether operation by remote controller will be possible or not for turning on/off, controlling temperature or setting operation mode is selected and decided by the operation mode given on Operation Mode the right edge of the table below. Example ON by remote OFF by remote...
Page 143: Field Setting From Outdoor Unit
Field Setting SiE39-404 Field Setting from Outdoor Unit 3.2.1 Field Setting from Outdoor Unit Setting by dip switches The following field settings are made by dip switches on PC board. Dipswitch Setting item Description Setting Used to set cool / heat select by remote controller DS1-1 Cool / Heat select equipped with outdoor unit.
Page 144 SiE39-404 Field Setting “Detail of DS1-4, DS2-1~4 setting” Previous unit Mfg. No. Setting method ( represents the position of switches) HEAT PUNP(5HP) 6300001~6300272 Set DS2-1 to ON. RXYQ5MY1B HEAT PUNP(8HP) 6300001~6300491 Set DS2-1 and DS2-3 to ON. RXYQ8MY1B HEAT Set DS2-1, DS2-2 and DS2-3 PUNP(10HP) 6300001~6301014 to ON.
Page 145 Field Setting SiE39-404 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 146 SiE39-404 Field Setting a. “Setting mode 1” LED display example Setting (displaying) item “Normally, “Setting mode 1” is set. Display for malfunction / In case of other status, push MODE ∗ preparing / test run button (BS1) one time and set to “Setting mode 1”.
Page 147 Field Setting SiE39-404 b. “Setting mode 2” Setting item Description Operates by Standard compressor only when inverter compressor malfunctions. Temporary operation until the Push and hold the MODE button EMG (Emergency compressor is replaced. Since the comfortability is (BS1) for 5 seconds and set to operation 1) extremely deteriorated, immediately replace the “Setting mode 2”.
Page 148 SiE39-404 Field Setting Setting item Description Emergency operation (Setting for the master unit operation prohibition in multi- outdoor-unit system) Emergency operation Used to temporarily prohibit the applicable outdoor unit (Setting for the from operating should there be any faulty part in multi- slave unit 1 outdoor-unit system.
Page 149 Field Setting SiE39-404 Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set 8777778 ∗ EMG (emergency Normal operation operation) 8777787 INV compressor Emergency operation operation inhibited. 8777777 ∗ Address 8777778 Binary number Cool / Heat Unified address...
Page 150 SiE39-404 Field Setting Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set 8777778 About 20:00 Night-time low noise 8777787 ∗ About 22:00 (factory operation start setting 8777877 About 24:00 8777778 About 6:00 8777787 Night-time low noise...
Page 151 Field Setting SiE39-404 c. Monitor mode LED display Setting item Data display 9 7 7 7 7 7 7 To enter the monitor mode, push the Number of units for sequential See below starting, and others MODE button (BS1) when in “Setting 9 7 7 7 7 7 8 mode 1”.
Page 152 SiE39-404 Field Setting Push the SET button and match with the LEDs No. 1 - 15, push the RETURN button, and enter the data for each setting. H Data such as addresses and number of units is expressed as binary numbers; the two ways of expressing are as follows: The No.
Page 153 Field Setting SiE39-404 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 154 SiE39-404 Field Setting Set Cool / Heat Separately for Each Outdoor Unit System by Cool/Heat Switching Remote Controller It does not matter whether or not there is outdoor - outdoor unit wiring. Set outdoor unit PC board DS1-1 to “outdoor” (factory set). Set cool/heat switching to “individual”...
Page 155 Field Setting SiE39-404 Set Cool / Heat for More Than One Outdoor Unit System Simultaneously in Accordance with Unified Master Outdoor Unit by Indoor Unit Remote Controller Install the outdoor unit external control adapter on either the outdoor-outdoor, indoor- outdoor, or transmission line. Set outdoor unit PC board DS1-1 to “Indoor”...
Page 156 SiE39-404 Field Setting Set Cool / Heat for More Than One Outdoor Unit System Simultaneously in Accordance with Unified Master Outdoor Unit by Cool/Heat Switching Remote Controller Add and change the following items to H Install cool/heat switching remote controller on the group master outdoor unit. H Set SS1 on the group master outdoor unit PC board.
Page 157 Field Setting SiE39-404 Address setting for (Set lower 5 digits with binary number.) [No.0 to No.31] Outdoor unit PCB LED Adapter PCB Address Set with setting mode 2 77777 No. 0 77778 No. 1 77787 No. 2 77788 No. 3 77877 No.
Page 158 SiE39-404 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. A.
Page 159 Field Setting SiE39-404 Image of operation in the case of A If capacity precedence is set in Operation sound ‘Capacity precedence setting’, the fan speed will be increased according to the load of air conditioning when load is heavier. Rated operation sound Operation sound during low Low noise mode instruction...
Page 160 SiE39-404 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 161 Field Setting SiE39-404 Image of operation in the case of A Power consumption The power Rated power consumption consumption during 80 % of rated power consumption the demand level 1 Demand level 1 instructing Demand level 2 instructing Demand level 3 instructing 70 % of rated power consumption instructing can be 60 % of rated power consumption...
Page 162 SiE39-404 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 163 Field Setting SiE39-404 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 164 SiE39-404 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 165 Field Setting SiE39-404 [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 166 SiE39-404 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 167 Field Setting SiE39-404 Test Operation...
Page 168: Part 6 Troubleshooting
SiE39-404 Part 6 Troubleshooting 1. Troubleshooting by Remote Controller ..........160 1.1 The INSPECTION / TEST Button............160 1.2 Self-diagnosis by Wired Remote Controller .........161 1.3 Self-diagnosis by Wireless Remote Controller ........162 1.4 Operation of The Remote Controller’s Inspection / Test Operation Button ................165 1.5 Remote Controller Service Mode ............166 1.6 Remote Controller Self-Diagnosis Function .........168 2.
Page 169 SiE39-404 2.31 “JC” Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor ..208 2.32 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise................209 2.33 “L5” Outdoor Unit: Inverter Compressor Abnormal .......210 2.34 “L8” Outdoor Unit: Inverter Current Abnormal........211 2.35 “L9” Outdoor Unit: Inverter Start up Error..........212 2.36 “LC”...
Page 170 SiE39-404 5.2 Display “Under Host Computer Integrate Control” Blinks (Repeats Single Blink)................251 5.3 Display “Under Host Computer Integrate Control” Blinks (Repeats Double Blink) ................254 Troubleshooting...
Page 171: Troubleshooting By Remote Controller
Troubleshooting by Remote Controller SiE39-404 1. 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. Service data can be obtained.
Page 172: Self-Diagnosis By Wired Remote Controller
SiE39-404 Troubleshooting by Remote Controller Self-diagnosis by Wired Remote Controller Explanation If operation stops due to malfunction, the remote controller’s operation LED blinks, and malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.) The malfunction code enables you to tell what kind of malfunction caused operation to stop.
Page 173: Self-Diagnosis By Wireless Remote Controller
Troubleshooting by Remote Controller SiE39-404 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 BRC7C ~ Type section flashes. The malfunction code can be determined by following the procedure described below. (The malfunction code is displayed when an operation error has occurred.
Page 174 SiE39-404 Troubleshooting by Remote Controller The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed. ‘Advance’ button ‘Backward’ button Troubleshooting...
Page 175 Troubleshooting by Remote Controller SiE39-404 Normal status Enters inspection mode from normal status when the INSPECTION/TEST button is pressed. 1 Press INSPECTION/TEST button. If no button is pressed for 1 minute, equipment returns to normal status. 3 Press MODE selector button.
Page 176: Operation Of The Remote Controller's Inspection / Test Operation Button
SiE39-404 Troubleshooting by Remote Controller Operation of The Remote Controller’s Inspection / Test Operation Button Unit Malfunction code Inspection Normal display (No display) Malfunction code blinks when a malfunction occurs. Inspection/test Push the button. operation Unit Example of capacity code display 0 7 1...
Page 177: Remote Controller Service Mode
Troubleshooting by Remote Controller SiE39-404 Remote Controller Service Mode How to Enter the Service Mode Normal operation Field set Service mode mode mode Push the button for 4 seconds or longer. Push the button for 4 seconds or longer. (VFO020) Service Mode 1.
Page 178 SiE39-404 Troubleshooting by Remote Controller Mode Function Contents and operation method Remote controller display example Malfunction Display malfunction hysteresis. hysteresis display Unit 1 The history No. can be changed with the button. Malfunction code 2-U4 Malfunction code Hystory No: 1 - 9 1: Latest (VE007) Display of sensor...
Page 179: Remote Controller Self-Diagnosis Function
Troubleshooting by Remote Controller SiE39-404 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 180 SiE39-404 Troubleshooting by Remote Controller 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 181 Troubleshooting by Remote Controller SiE39-404 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 182: Malfunction Code Indication By Outdoor Unit Pcb
SiE39-404 Troubleshooting by Remote Controller 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 Abnormal discharge pressure HPS activated mode 1”. Abnormal suction pressure Abnormal Pe Compressor lock Detection of INV compressor lock...
Page 183 Troubleshooting by Remote Controller SiE39-404 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 LED1 LED2 LED3 LED4 LED5 LED6 LED7 : ON : ON Malfunction code 1st...
Page 184: Troubleshooting By Indication On The Remote Controller
SiE39-404 Troubleshooting by Indication on the Remote Controller 2. 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 Actuation of external protection device Causes...
Page 185: A1" Indoor Unit: Pc Board Defect
Troubleshooting by Indication on the Remote Controller SiE39-404 “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 Decision E²PROM : Type of nonvolatile memory.
Page 186: A3" Indoor Unit: Malfunction Of Drain Level Control System (S1L)
SiE39-404 Troubleshooting by Indication on the Remote Controller “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 Malfunction Detection...
Page 187 Troubleshooting by Indication on the Remote Controller SiE39-404 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is power supply 220~240V provided? Provide 220~240V power supply. The float A short switch is connected to circuit connector is Connect either a short circuit...
Page 188: A6" Indoor Unit: Fan Motor (M1F) Lock, Overload
SiE39-404 Troubleshooting by Indication on the Remote Controller “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 189: A7" Indoor Unit: Malfunction Of Swing Flap Motor (Ma)
Troubleshooting by Indication on the Remote Controller SiE39-404 “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 Decision motor is energized for a specified amount of time (about 30 seconds).
Page 190 SiE39-404 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 220~240V provided? Provide 220~240V power supply. Indoor unit is a model equipped Replace indoor unit PC board.
Page 191: A9" Indoor Unit: Malfunction Of Moving Part Of Electronic Expansion Valve (20E)
Troubleshooting by Indication on the Remote Controller SiE39-404 “A9” Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (20E) Remote Controller Display Applicable All indoor unit models Models Method of Detection by failure of signal for detecting number of turns to come from the fan motor Malfunction Detection Malfunction...
Page 192 SiE39-404 Troubleshooting by Indication on the Remote Controller ∗1: Coil check method for the moving part of the electronic expansion valve Discount the electronic expansion valve from the PC board and check the continuity between the connector pins. (Normal) Pin No. 1.
Page 193: Af" Indoor Unit: Drain Level Above Limit
Troubleshooting by Indication on the Remote Controller SiE39-404 “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 194: Aj" Indoor Unit: Malfunction Of Capacity Determination Device
SiE39-404 Troubleshooting by Indication on the Remote Controller “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 Malfunction inside the IC memory on the indoor unit PC board, and whether the value is normal or abnormal is determined.
Page 195: C4" Indoor Unit: Malfunction Of Thermistor (R2T) For Heat Exchanger
Troubleshooting by Indication on the Remote Controller SiE39-404 “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 196: C5" Indoor Unit: Malfunction Of Thermistor (R3T) For Gas Pipes
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.10 “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 197: C9" Indoor Unit: Malfunction Of Thermistor (R1T) For Suction Air
Troubleshooting by Indication on the Remote Controller SiE39-404 2.11 “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 Malfunction thermistor.
Page 198: Cj" Indoor Unit: Malfunction Of Thermostat Sensor In Remote Controller
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.12 “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 Malfunction temperature thermistor.
Page 199: E1" Outdoor Unit: Pc Board Defect
Troubleshooting by Indication on the Remote Controller SiE39-404 2.13 “E1” Outdoor Unit: PC Board Defect Remote Controller Display Applicable RXYQ5~48M Models Method of Check data from E²PROM Malfunction Detection Malfunction When data could not be correctly received from the E²PROM Decision E²PROM : Type of nonvolatile memory.
Page 200: E3" Outdoor Unit: Actuation Of High Pressure Switch
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.14 “E3” Outdoor Unit: Actuation of High Pressure Switch Remote Controller Display Applicable RXYQ5~48M Models Method of Abnormality is detected when the contact of the high pressure protection switch opens. Malfunction Detection Malfunction Error is generated when the HPS activation count reaches the number specific to the operation Decision...
Page 201: E4" Outdoor Unit: Actuation Of Low Pressure Sensor
Troubleshooting by Indication on the Remote Controller SiE39-404 2.15 “E4” Outdoor Unit: Actuation of Low Pressure Sensor Remote Controller Display Applicable RXYQ5~48M Models Method of Malfunction Detection Malfunction Error is generated when the low pressure is dropped under specific pressure. Decision Conditions Supposed...
Page 202: E5" Compressor Motor Lock
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.16 “E5” Compressor Motor Lock Remote Controller Display Applicable RXYQ5~48M 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 203: E6" Compressor Motor Overcurrent/Lock
Troubleshooting by Indication on the Remote Controller SiE39-404 2.17 “E6” Compressor Motor Overcurrent/Lock Remote Controller Display Applicable Outdoor unit 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 Decision 2 seconds.
Page 204: E7" Malfunction Of Outdoor Unit Fan Motor
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.18 “E7” Malfunction of Outdoor Unit Fan Motor Remote Controller Display Applicable RXYQ5~48M 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 205 Troubleshooting by Indication on the Remote Controller SiE39-404 Troubleshooting Check No. 12 Check on pulse input of position signal of fan inverter Is the LED Replace the fan inverter (HAP) on fan inverter PCB. PCB blinking? Check No. 8 Check on connector of fan motor (Power supply cable) Are the resistance values...
Page 206: E9" Outdoor Unit: Malfunction Of Moving Part Of Electronic Expansion Valve (Y1E, Y2E)
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.19 “E9” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E, Y2E) Remote Controller Display Applicable RXYQ5~48M Models Method of Check disconnection of connector Malfunction Check continuity of expansion valve coil Detection Malfunction Error is generated under no common power supply when the power is on.
Page 207 Troubleshooting by Indication on the Remote Controller SiE39-404 ∗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 208: F3" Outdoor Unit: Abnormal Discharge Pipe Temperature
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.20 “F3” Outdoor Unit: Abnormal Discharge Pipe Temperature Remote Controller Display Applicable RXYQ5~48M Models Method of Abnormality is detected according to the temperature detected by the discharge pipe Malfunction temperature sensor. Detection Malfunction When the discharge pipe temperature rises to an abnormally high level Decision...
Page 209: F6" Refrigerant Overcharged
Troubleshooting by Indication on the Remote Controller SiE39-404 2.21 “F6” Refrigerant Overcharged Remote Controller Display Applicable RXYQ5~48M 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 Decision operation.
Page 210: H7" Abnormal Outdoor Fan Motor Signal
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.22 “H7” Abnormal Outdoor Fan Motor Signal Remote Controller Display Applicable RXYQ5~48M 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 211: H9" Outdoor Unit: Malfunction Of Thermistor For Outdoor Air (R1T)
Troubleshooting by Indication on the Remote Controller SiE39-404 2.23 “H9” Outdoor Unit: Malfunction of Thermistor for Outdoor Air (R1T) Remote Controller Display Applicable RXYQ5~48M Models Method of The abnormal detection is based on current detected by current sensor. Malfunction Detection Malfunction When the outside air temperature sensor has short circuit or open circuit.
Page 212: J2" Current Sensor Malfunction
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.24 “J2” Current Sensor Malfunction Remote Controller Display Applicable RXYQ5~48M 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 Decision standard compressor operation.
Page 213: J3" Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R3, R31~33T)
Troubleshooting by Indication on the Remote Controller SiE39-404 2.25 “J3” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R3, R31~33T) Remote Controller Display Applicable RXYQ5~48M Models Method of Malfunction is detected from the temperature detected by discharge pipe temperature Malfunction thermistor. Detection Malfunction When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.
Page 214: J5" Outdoor Unit: Malfunction Of Thermistor (R2T) For Suction Pipe
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.26 “J5” Outdoor Unit: Malfunction of Thermistor (R2T) for Suction Pipe Remote Controller Display Applicable RXYQ5~48M Models Method of Malfunction is detected from the temperature detected by the suction pipe temperature Malfunction thermistor.
Page 215: J6" Outdoor Unit: Malfunction Of Thermistor (R4T) For Outdoor Unit Heat Exchanger
Troubleshooting by Indication on the Remote Controller SiE39-404 2.27 “J6” Outdoor Unit: Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger Remote Controller Display Applicable RXYQ5~48M Models Method of Malfunction is detected from the temperature detected by the heat exchanger thermistor. Malfunction Detection Malfunction...
Page 216: J8" Malfunction Of Oil Equalizing Pipe Thermistor (R7T)
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.28 “J8” Malfunction of Oil Equalizing Pipe Thermistor (R7T) Remote Controller Display Applicable RXYQ5~48M Models Method of Malfunction is detected according to the temperature detected by oil equalizing pipe thermistor. Malfunction Detection Malfunction When the oil equalizing pipe thermistor is short circuited or open.
Page 217: J9" Malfunction Of Receiver Gas Pipe Thermistor (R5T)
Troubleshooting by Indication on the Remote Controller SiE39-404 2.29 “J9” Malfunction of Receiver Gas Pipe Thermistor (R5T) Remote Controller Display Applicable RXYQ5~48M Models Method of Malfunction is detected according to the temperature detected by receiver gas pipe thermistor. Malfunction Detection Malfunction When the receiver gas pipe thermistor is short circuited or open.
Page 218: Ja" Outdoor Unit: Malfunction Of Discharge Pipe Pressure Sensor
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.30 “JA” Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor Remote Controller Display Applicable RXYQ5~48M Models Method of Malfunction is detected from the pressure detected by the high pressure sensor. Malfunction Detection Malfunction When the discharge pipe pressure sensor is short circuit or open circuit.
Page 219: Jc" Outdoor Unit: Malfunction Of Suction Pipe Pressure Sensor
Troubleshooting by Indication on the Remote Controller SiE39-404 2.31 “JC” Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor Remote Controller Display Applicable RXYQ5~48M 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. Decision Conditions Supposed...
Page 220: L4" Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.32 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Remote Controller Display Applicable RXYQ5~48M Models Method of Fin temperature is detected by the thermistor of the radiation fin. Malfunction Detection Malfunction When the temperature of the inverter radiation fin increases above 89°C.
Page 221: L5" Outdoor Unit: Inverter Compressor Abnormal
Troubleshooting by Indication on the Remote Controller SiE39-404 2.33 “L5” Outdoor Unit: Inverter Compressor Abnormal Remote Controller Display Applicable RXYQ5~48M 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. Decision (Instantaneous overcurrent also causes activation.) Conditions...
Page 222: L8" Outdoor Unit: Inverter Current Abnormal
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.34 “L8” Outdoor Unit: Inverter Current Abnormal Remote Controller Display Applicable RXYQ5~48M 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 223: L9" Outdoor Unit: Inverter Start Up Error
Troubleshooting by Indication on the Remote Controller SiE39-404 2.35 “L9” Outdoor Unit: Inverter Start up Error Remote Controller Display Applicable RXYQ5~48M 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 224: Lc" Outdoor Unit: Malfunction Of Transmission Between Inverter And Control Pc Board
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.36 “LC” Outdoor Unit: Malfunction of Transmission Between Inverter and Control PC Board Remote Controller Display Applicable RXYQ5~48M Models Method of Check the communication state between inverter PC board and control PC board by micro- Malfunction computer.
Page 225 Troubleshooting by Indication on the Remote Controller SiE39-404 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 226: P1" Outdoor Unit: Inverter Over-Ripple Protection
Give the user a copy of "notification of inspection results"and leave Be sure to explain to the user that it up to him to improve the imbalance. there is a "power supply imbalance" for which DAIKIN is not responsible. (V2816) Troubleshooting...
Page 227: P4" Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise Sensor
Troubleshooting by Indication on the Remote Controller SiE39-404 2.38 “P4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor Remote Controller Display Applicable RXYQ5~48M Models Method of Resistance of radiation fin thermistor is detected when the compressor is not operating. Malfunction Detection Malfunction...
Page 228: Uo" Low Pressure Drop Due To Refrigerant Shortage Or Electronic Expansion Valve Failure
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.39 “UO” Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure Remote Controller Display Applicable RXYQ5~48M Models Method of Short of gas malfunction is detected by discharge pipe temperature thermistor. Malfunction Detection Malfunction...
Page 229: U1" Reverse Phase, Open Phase
Troubleshooting by Indication on the Remote Controller SiE39-404 2.40 “U1” Reverse Phase, Open Phase Remote Controller Display Applicable H3 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 230: U2" Power Supply Insufficient Or Instantaneous Failure
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.41 “U2” Power Supply Insufficient or Instantaneous Failure Remote Controller Display Applicable RXYQ5~48M Models Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Detection Malfunction Decision...
Page 231 Troubleshooting by Indication on the Remote Controller SiE39-404 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 232: U3" Check Operation Not Executed
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.42 “U3” Check Operation not executed Remote Controller Display Applicable RXYQ5~48M 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 233: U4" Malfunction Of Transmission Between Indoor Units
Troubleshooting by Indication on the Remote Controller SiE39-404 2.43 “U4” Malfunction of Transmission Between Indoor Units Remote Controller Display Applicable All model of indoor unit Models RXYQ5~48M Method of Microcomputer checks if transmission between indoor and outdoor units is normal. Malfunction Detection Malfunction...
Page 234 SiE39-404 Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. the indoor or outdoor unit PC board been replaced, or has the indoor - outdoor Push and hold the RESET or outdoor - outdoor unit button on the master outdoor...
Page 235: U5" Malfunction Of Transmission Between Remote Controller And Indoor Unit
Troubleshooting by Indication on the Remote Controller SiE39-404 2.44 “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 Malfunction transmission between indoor unit and remote controller (main and sub) is normal.
Page 236: U7" Malfunction Of Transmission Between Outdoor Units
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.45 “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 237 Troubleshooting by Indication on the Remote Controller SiE39-404 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 238: U8" Malfunction Of Transmission Between Master And Slave Remote Controllers
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.46 “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 Malfunction transmission between indoor unit and remote controller (main and sub) is normal.
Page 239: U9" Malfunction Of Transmission Between Indoor And Outdoor Units In The Same System
Troubleshooting by Indication on the Remote Controller SiE39-404 2.47 “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 Causes Malfunction of electronic expansion valve in indoor unit of other system...
Page 240 SiE39-404 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. "U9" has been displayed for 2 Re-diagnose by display after minutes or more. passage of 2 minutes or more.
Page 241: Ua" Excessive Number Of Indoor Units
Troubleshooting by Indication on the Remote Controller SiE39-404 2.48 “UA” Excessive Number of Indoor Units Remote Controller Display Applicable All models of indoor unit Models RXYQ5~48M Method of Malfunction Detection Malfunction Decision Conditions Supposed Excess of connected indoor units Causes Defect of outdoor unit PC board (A1P) Mismatching of the refrigerant type of indoor and outdoor unit.
Page 242: Uc" Address Duplication Of Central Remote Controller
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.49 “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 Causes Defect of indoor unit PC board Troubleshooting...
Page 243: Ue" Malfunction Of Transmission Between Central Remote Controller And Indoor Unit
Troubleshooting by Indication on the Remote Controller SiE39-404 2.50 “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 Malfunction normal.
Page 244 SiE39-404 Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. an indoor unit once connected been remove Reset power supply or its address simultaneously for all optional changed? controllers for centralized...
Page 245: Uf" Refrigerant System Not Set, Incompatible Wiring/Piping
Troubleshooting by Indication on the Remote Controller SiE39-404 2.51 “UF” Refrigerant System not Set, Incompatible Wiring/ Piping Remote Controller Display Applicable All models of indoor units RXYQ5~48M Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Improper connection of transmission wiring between outdoor unit and outdoor unit outside Causes control adaptor Failure to execute wiring check operation...
Page 246: Uh" Malfunction Of System, Refrigerant System Address Undefined
SiE39-404 Troubleshooting by Indication on the Remote Controller 2.52 “UH” Malfunction of System, Refrigerant System Address Undefined Remote Controller Display Applicable All models of indoor units RXYQ5~48M Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Improper connection of transmission wiring between outdoor unit and outdoor unit outside Causes control adaptor Defect of indoor unit PC board...
Page 247: Troubleshooting (Op: Central Remote Controller)
Troubleshooting (OP: Central Remote Controller) SiE39-404 3. 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 RXYQ5~48M Method of Microcomputer checks if transmission between indoor unit and central remote controller is Malfunction normal.
Page 248: M1" Pc Board Defect
SiE39-404 Troubleshooting (OP: Central Remote Controller) “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 249: M8" Malfunction Of Transmission Between Optional Controllers For Centralized Control
Troubleshooting (OP: Central Remote Controller) SiE39-404 “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 Causes Defect of PC board of optional controllers for centralized control Troubleshooting...
Page 250: Ma" Improper Combination Of Optional Controllers For Centralized Control
SiE39-404 Troubleshooting (OP: Central Remote Controller) “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 Causes More than one master controller is connected Defect of PC board of optional controller for centralized control Troubleshooting...
Page 251 Troubleshooting (OP: Central Remote Controller) SiE39-404 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 252: Mc" Address Duplication, Improper Setting
SiE39-404 Troubleshooting (OP: Central Remote Controller) “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, or parts damage may be occurred.
Page 253: Troubleshooting (Op: Schedule Timer)
Troubleshooting (OP: Schedule Timer) SiE39-404 4. 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 Malfunction normal.
Page 254 SiE39-404 Troubleshooting (OP: Schedule Timer) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. an indoor unit once connected been Reset power supply removeor its address simultaneously for all optional changed? controllers for centralized control.
Page 255: M1" Pc Board Defect
Troubleshooting (OP: Schedule Timer) SiE39-404 “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 256: M8" Malfunction Of Transmission Between Optional Controllers For Centralized Control
SiE39-404 Troubleshooting (OP: Schedule Timer) “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 Causes Defect of PC board of optional controllers for centralized control Troubleshooting...
Page 257: Ma" Improper Combination Of Optional Controllers For Centralized Control
Troubleshooting (OP: Schedule Timer) SiE39-404 “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 Causes More than one master controller is connected.
Page 258 SiE39-404 Troubleshooting (OP: Schedule Timer) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Cannot be used in combination with a wiring Is the wiring adaptor for electrical adaptor for electrical appendices.
Page 259: Mc" Address Duplication, Improper Setting
Troubleshooting (OP: Schedule Timer) SiE39-404 “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, Caution or parts damage may be occurred.
Page 260: Troubleshooting (Op: Unified On/Off Controller)
SiE39-404 Troubleshooting (OP: Unified ON/OFF Controller) 5. 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 Causes Connector for setting master controller is disconnected Defect of unified ON/OFF controller...
Page 261 Troubleshooting (OP: Unified ON/OFF Controller) SiE39-404 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is a malfunction Diagnose the cause with the code displayed on the air conditioner's failure remote controller? diagnosis manual.
Page 262: Display "Under Host Computer Integrate Control" Blinks (Repeats Single Blink)
SiE39-404 Troubleshooting (OP: Unified ON/OFF Controller) 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 263 Troubleshooting (OP: Unified ON/OFF Controller) SiE39-404 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 264 SiE39-404 Troubleshooting (OP: Unified ON/OFF Controller) Is the wiring adaptor for Cannot be used in electrical appendices combination with a wiring connected? adaptor for electrical appendices. Remove the wiring adaptor for electrical appendices and reset the power supply for all optional controllers for centralized control simultaneously.
Page 265: Display "Under Host Computer Integrate Control" Blinks (Repeats Double Blink)
Troubleshooting (OP: Unified ON/OFF Controller) SiE39-404 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 266 SiE39-404 Troubleshooting (OP: Unified ON/OFF Controller) 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 267 Troubleshooting (OP: Unified ON/OFF Controller) SiE39-404 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 268: Part 7 Replacement Procedure For Inv Compressor, Vrv Ii (Rxyq5M To 48M)
SiE39-404 Part 7 Replacement procedure for INV compressor, VRV II (RXYQ5M to 48M) 1. Replacement procedure for INV compressor, VRV II (RXYQ5M-48M) ...............258 1.1 Replacement procedure ...............258 Replacement procedure for INV compressor, VRV II (RXYQ5M to 48M)
Page 269: Replacement Procedure For Inv Compressor
Replacement procedure for INV compressor, VRV II (RXYQ5M-48M) SiE39-404 1. Replacement procedure for INV compressor, VRV II (RXYQ5M-48M) Replacement procedure (1) Collect the refrigerant by using refrigerant Suction pipe recovery unit. (Since the setting on outdoor unit PCB is required for refrigerant recovery, refer to the warning plate Discharge pipe "Precautions in service work"...
Page 270: Part 8 Appendix
SiE39-404 Part 8 Appendix 1. Piping Diagrams..................260 1.1 Outdoor Unit ..................260 1.2 Indoor Unit....................263 2. Wiring Diagrams for Reference............269 2.1 Outdoor Unit ..................269 2.2 Field Wiring ..................272 2.3 Indoor Unit....................275 3. List of Electrical and Functional Parts ..........293 3.1 Outdoor Unit ..................293 3.2 Indoor Side ...................295 4.
Page 271: Piping Diagrams
Piping Diagrams SiE39-404 1. Piping Diagrams Outdoor Unit RXYQ5MY1B Filter Solenoid valve Heat exchanger pipe Filter Solenoid valve Filter Filter Electronic Capillary expansion valve tube Heat exchanger Four way valve High pressure Pressure switch Filter regulating valve High pressure switch Filter Compressor Capillary...
Page 272 SiE39-404 Piping Diagrams RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B Solenoid Capillary Check valve Filter tube valve Heat exchanger pipe Filter Filter Electronic expansion valve Filter Pressure regulating valve Electronic expansion valve Check valve Solenoid valve Check valve Four way Heat exchanger valve Pressure High pressure regulating sensor...
Page 273 Piping Diagrams SiE39-404 RXYQ14MY1B RXYQ16MY1B Solenoid Capillary Check valve valve tube Filter Heat exchanger pipe Filter Filter Electronic expansion valve Filter Pressure regulating valve Electronic expansion valve Check valve Solenoid valve Check valve Heat exchanger Four way valve High pressure Pressure sensor regulating...
Page 274: Indoor Unit
SiE39-404 Piping Diagrams Indoor Unit FXCQ, FXZQ, FXFQ, FXKQ, FXSQ, FXMQ, FXHQ, FXAQ, FXLQ, FXNQ Gas piping connection port Heat exchanger Flare connection: ø 15.9 or less Attached piping: Above ø 19.1 Liquid piping connection port (Flare connection) Electronic Filter Filter expansion valve DU220-602D...
Page 275 Piping Diagrams SiE39-404 FXDQ Gas side Liquid side Electronic expansion valve Filter Filter Indoor heat exchanger 4D043864A Refrigerant pipe connection port diameters (mm) Model Liquid φ12.7 φ6.4 FXDQ20N / 25N / 32N / 40N / 50NVE φ15.9 φ9.5 FXDQ63NVE Appendix...
Page 276 SiE39-404 Piping Diagrams FXMQ125/200/250MFV1 Gas pipe connection port Heat exchanger Filter Capillary tube Distributor Solenoid valve Liquid pipe connection port Check valve Filter Filter Electronic expansion valve 4D018650B Refrigerant pipe connection port diameters (mm) Model Liquid φ15.9 φ9.5 FXMQ125MFV1 φ19.1 φ9.5 FXMQ200MFV1 φ22.2...
Page 277 Piping Diagrams SiE39-404 FXUQ + BEVQ Indoor unit Indoor heat exchanger Field piping ø 9. 5C1220T-0 Filter outdoor unit Field piping ø 15.9 C1220T-0 Indoor unit 4D037995B Connection Unit Electronic iquid piping Liquid piping expansion valve onnection port connection port Filter Filter Gas piping...
Page 278 SiE39-404 Piping Diagrams FXAQ + BEVQ Indoor unit Gas pipe connection port Heat exchanger Liquid pipe connection port Filter 4D047084 Connection Unit Electronic Liquid piping Liquid piping expansion valve connection port connection port Filter Filter Gas piping Gas piping connection port connection port 4D034127B Appendix...
Page 279 Piping Diagrams SiE39-404 FXLQ + BEVQ Indoor unit Gas pipe connection port Heat exchanger Liquid pipe connection port Filter 4D047084 Connection Unit Electronic Liquid piping Liquid piping expansion valve connection port connection port Filter Filter Gas piping Gas piping connection port connection port 4D034127B Appendix...
Page 280: Wiring Diagrams For Reference
SiE39-404 Wiring Diagrams for Reference 2. Wiring Diagrams for Reference Outdoor Unit RXYQ5MY1B Appendix...
Page 281 Wiring Diagrams for Reference SiE39-404 RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B Appendix...
Page 282 SiE39-404 Wiring Diagrams for Reference RXYQ14MY1B RXYQ16MY1B Appendix...
Page 283: Field Wiring
Wiring Diagrams for Reference SiE39-404 Field Wiring RXYQ5~16MY1B Appendix...
Page 284 SiE39-404 Wiring Diagrams for Reference RXYQ18, 20, 22, 24, 26, 28, 30, 32MY1B Appendix...
Page 285 Wiring Diagrams for Reference SiE39-404 RXYQ34, 36, 38, 40, 42, 44, 46, 48MY1B Appendix...
Page 286: Indoor Unit
SiE39-404 Wiring Diagrams for Reference Indoor Unit FXCQ20M / 25M / 32M / 63MVE Appendix...
Page 287 Wiring Diagrams for Reference SiE39-404 FXCQ40M / 50M / 80M/ 125MVE Appendix...
Page 288 SiE39-404 Wiring Diagrams for Reference FXZQ20M / 25M / 32M / 40M / 50MVE Appendix...
Page 289 Wiring Diagrams for Reference SiE39-404 FXFQ25M / 32M / 40M / 50M / 63M / 80M / 100M / 125MVE Appendix...
Page 290 SiE39-404 Wiring Diagrams for Reference FXKQ25M / 32M / 40M / 63MVE Appendix...
Page 291 Wiring Diagrams for Reference SiE39-404 FXDQ20N / 25N / 32N / 40N / 50N / 63NVE Appendix...
Page 292 SiE39-404 Wiring Diagrams for Reference FXSQ20M / 25M / 32M / 40M / 50M / 63M / 80M / 100M / 125MVE Appendix...
Page 293 Wiring Diagrams for Reference SiE39-404 FXMQ40M / 50M / 63M / 80M / 100M / 125MVE Appendix...
Page 294 SiE39-404 Wiring Diagrams for Reference FXMQ200M / 250MVE Appendix...
Page 295 Wiring Diagrams for Reference SiE39-404 FXHQ32M / 63M / 100MVE Appendix...
Page 296 SiE39-404 Wiring Diagrams for Reference FXAQ20M / 25M / 32MVE / 40M / 50M / 63MVE Appendix...
Page 297 Wiring Diagrams for Reference SiE39-404 FXLQ20M / 25M / 32M / 40M / 50M / 63MVE FXNQ20M / 25M / 32M / 40M / 50M / 63MVE Appendix...
Page 298 SiE39-404 Wiring Diagrams for Reference FXUQ71M / 100M / 125MV1 Appendix...
Page 299 Wiring Diagrams for Reference SiE39-404 FXAQ20MH / 25MH / 32MH / 40MH / 50MHV1 Appendix...
Page 300 SiE39-404 Wiring Diagrams for Reference FXLQ20MH / 25MH / 32MH / 40MH / 50MHV1 Appendix...
Page 301 Wiring Diagrams for Reference SiE39-404 FXMQ125MF / 200MF / 250MFV1 Electric parts box Power supply ~ 50Hz 220-240V In case of FXMQ 200 • 250MFV1 Note: 4 Input from outside Note: 2 Transmission wiring, central remote control Note: 3 Wired remote control In case of FXMQ125MFV1 (Optional accessory) Drain pump kit...
Page 302 SiE39-404 Wiring Diagrams for Reference BEVQ50MVE BEV unit Power supply Printed circuit board Power supply printed circuit 220-240V 220-240V board assy (220-240V/16V) Fuse ( , 10A, 250V) Light emitting diode (Service monitor-green) Thermistor (Gas) Selector switch (M/S) Terminal strip (Power) To indoor unit Terminal strip (Transmission) Electronic expansion valve...
Page 303 Wiring Diagrams for Reference SiE39-404 BEVQ71M / 100M / 125MVE BEV unit Power supply Printed circuit board assy Power supply printed circuit 220-240V 220-240V board assy (220-240V/16V) Fuse ( , 10A, 250V) Light emitting diode (Service monitor-green) Thermistor (Gas) Selector switch (M/S) Terminal strip (Power) To indoor unit Terminal strip (Transmission)
Page 304: List Of Electrical And Functional Parts
SiE39-404 List of Electrical and Functional Parts 3. List of Electrical and Functional Parts Outdoor Unit 3.1.1 RXYQ5~16MY1B * Valve in ( ) are for RXYQ5MY1B Model Item Name Symbol RXYQ5MY1B RXYQ8MY1B RXYQ10MY1B Compressor Inverter Type JT1FCVDKYR JT1FCVDKTYR JT1FCVDKTYR 3.2kW 1.2kW 2.7kW Output...
Page 305 List of Electrical and Functional Parts SiE39-404 Model Item Name Symbol RXYQ12MY1B RXYQ14MY1B RXYQ16MY1B Compressor Inverter Type JT1FCVDKTYR JT1FCVDKTYR JT1FCVDKTYR 4.2kW 2.0kW 3.0kW Output STD.1 Type JT170FCKYE JT170FCKYE JT170FCKYE 4.5kW 4.5kW 4.5kW Output STD.2 Type — JT170FCKYE JT170FCKYE 4.5kW 4.5kW Output Crankcase heater (INV) E1HC...
Page 306: Indoor Side
SiE39-404 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 307 List of Electrical and Functional Parts SiE39-404 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 308 SiE39-404 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 309 List of Electrical and Functional Parts SiE39-404 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 310 SiE39-404 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 311 List of Electrical and Functional Parts SiE39-404 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 312: Option List
SiE39-404 Option List 4. 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) FXNQ-M FXMQ-MF Item Wireless BRC7C62 BRC7E61W BRC7E530W BRC4C61 BRC4C62 BRC7C528W BRC4C62 BRC7E63W BRC7E618 BRC4C62 —...
Page 313: System Configuration
Option List SiE39-404 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 314: Option Lists (Outdoor Unit)
SiE39-404 Option List Option Lists (Outdoor Unit) RXYQ5 ~ 16MY1B RXYQ12MY1B RXYQ8MY1B Optional accessories RXYQ5MY1B RXYQ14MY1B RXYQ10MY1B RXYQ16MY1B Cool/Heat Selector KRC19-26A Fixing box KJB111A KHRP26M22H, KHRP26M22H, KHRP26M22H, KHRP26M33H KHRP26M33H, KHRP26M33H, (Max. 4 branch) (Max. 4 branch) KHRP26M72H Refnet header (Max. 8 branch) (Max.
Page 315: Piping Installation Point
Piping Installation Point SiE39-404 5. Piping Installation Point Piping Installation Point Max. 5m Connection Connection Maximum length from a connection kit. Kit A Kit B 10m or less from first branch. (Equivalent Piping Length 13m) Since there is a possibility that oil may be collected on a stop machine side, install piping between outdoor units to go to level or go up to an outdoor unit, and to make a slope.
Page 316: The Example Of A Wrong Pattern
SiE39-404 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 Wrong × Oil is collected to the low level outdoor unit at the time of a stop, because of downward slope of piping.
Page 317: Selection Of Pipe Size, Joints And Header
Selection of Pipe Size, Joints and Header SiE39-404 6. Selection of Pipe Size, Joints and Header RXYQ5MY1B, RXYQ8MY1B, RXYQ10MY1B, RXYQ12MY1B, RXYQ14MY1B, RXYQ16MY1B 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 318 SiE39-404 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 319: Rxyq18My1B, Rxyq20My1B, Rxyq22My1B, Rxyq24My1B
Selection of Pipe Size, Joints and Header SiE39-404 RXYQ18MY1B, RXYQ20MY1B, RXYQ22MY1B, RXYQ24MY1B, RXYQ26MY1B, RXYQ28MY1B, RXYQ30MY1B, RXYQ32MY1B, RXYQ34MY1B, RXYQ36MY1B, RXYQ38MY1B, RXYQ40MY1B, RXYQ42MY1B, RXYQ44MY1B, RXYQ46MY1B, RXYQ48MY1B 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 320 SiE39-404 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 321: Outdoor Unit Multi Connection Piping Kit
Selection of Pipe Size, Joints and Header SiE39-404 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 322: Thermistor Resistance / Temperature Characteristics
SiE39-404 Thermistor Resistance / Temperature Characteristics 7. 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...
Page 323 Thermistor Resistance / Temperature Characteristics SiE39-404 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 324: Pressure Sensor
SiE39-404 Pressure Sensor 8. 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) (kg/cm²) 51.0 5.0...
Page 325: Method Of Replacing The Inverter's Power Transistors And Diode Modules
Method of Replacing The Inverter’s Power Transistors and Diode Modules SiE39-404 9. Method of Replacing The Inverter’s Power Transistors and Diode Modules Method of Replacing The Inverter’s Power Transistors and Diode Modules Inverter P.C.Board Inverter PC board (AIP) PC0208 Fasten Tab X10A X11A P2 P1...
Page 326 SiE39-404 Method of Replacing The Inverter’s Power Transistors and Diode Modules Power Transistor IGBT (On Inverter PC Board) Approx. 4k ¡ Continuity " " " " " " " " (Approx. 250k ) (Approx. 100k ) " " Approx. 4k ¡ Continuity In the case of continuity, the resistance must be...
Page 327 Method of Replacing The Inverter’s Power Transistors and Diode Modules SiE39-404 Appendix...
Page 328: Part 9 Precautions For New Refrigerant (R410)
SiE39-404 Part 9 Precautions for New Refrigerant (R410) 1. Precautions for New Refrigerant (R410) ..........318 1.1 Outline ....................318 1.2 Refrigerant Cylinders................320 1.3 Service Tools..................321 Precautions for New Refrigerant (R410)
Page 329: Precautions For New Refrigerant (R410)
Precautions for New Refrigerant (R410) SiE39-404 1. Precautions for New Refrigerant (R410) 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 330 SiE39-404 Precautions for New Refrigerant (R410) Thermodynamic characteristic of R410A DAIREP ver2.0 Temperature Steam pressure Density Specific heat at constant Specific enthalpy Specific entropy (°C) (kPa) (kg/m pressure (kJ/kgK) (kJ/kg) (kJ/KgK) Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor 36.13 36.11...
Page 331: Refrigerant Cylinders
Precautions for New Refrigerant (R410) SiE39-404 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 332: Service Tools
SiE39-404 Precautions for New Refrigerant (R410) 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 333 Precautions for New Refrigerant (R410) SiE39-404 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...
Page 334 SiE39-404 Precautions for New Refrigerant (R410) 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 335 Precautions for New Refrigerant (R410) SiE39-404 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 336 SiE39-404 Precautions for New Refrigerant (R410) 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 337 Precautions for New Refrigerant (R410) SiE39-404 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 338: Index
SiE39-404 Index A0 .................173 E1 ................ 188 A1 .................174 E3 ................ 189 A3 .................175 E4 ................ 190 A6 .................177 E5 ................ 191 A7 .................178 E6 ................ 192 A9 .................180 E7 ................ 193 AF ................182 E9 ................ 195 AJ .................183 Electronic Expansion Valve PI Control ....83 Abnormal Discharge Pipe Temperature ....197 Emergency Operation .........
Page 339 SiE39-404 L8 .................211 Malfunction of Transmission Between Indoor and L9 .................212 Outdoor Units in the Same System ....228 LC ................213 Malfunction of Transmission Between Inverter and List of Electrical and Functional Parts ....293 Control PC Board ......... 213 Indoor Unit .............295 Malfunction of Transmission Between Master and Outdoor Unit ..........293 Slave Remote Controllers ......
Page 340 SiE39-404 STD Compressor Overload Protection ....98 Selection of Pipe Size, Joints and Header ...306 Service Tools ............321 Setting Contents and Code No......122 Setting by dip switches ........132 Setting by pushbutton switches ......134 Setting of Low Noise Operation and Demand Operation ............147 Setting of Refrigerant Additional Charging Operation ........153...
Page 341 SiE39-404 Index...
Page 342: Drawings & Flow Charts
SiE39-404 Drawings & Flow Charts Field Setting From Outdoor Unit Mode changing procedure ......134 Abnormal Discharge Pipe Temperature ....197 Setting by pushbutton switches ....134 Abnormal Outdoor Fan Motor Signal ....199 Field Setting from Outdoor Unit Actuation of High Pressure Switch .......189 Setting by dip switches .........
Page 343 SiE39-404 Malfunction of Suction Pipe Pressure Sensor ..208 RXYQ8, 10, 12M ..........52 Malfunction of Swing Flap Motor (MA) ....178 Refrigerant Cylinders .......... 320 Malfunction of System, Refrigerant Refrigerant Flow for Each Operation Mode ... 60 System Address Undefined ......235 RXYQ14, 16M ..........
Page 344 Daikin Europe N.V. is approved by LRQA for its Quality Daikin units comply with the European regulations that Management System in accordance with the ISO9001 guarantee the safety of the product. standard. ISO9001 pertains to quality assurance regarding design, development, manufacturing as well as to services related to the product.

Daikin VRV II RXYQ5MY1B Service Manual

Part 1 General Information

Part 2 Specifications

Part 3 Refrigerant Circuit

Part 4 Function

Part 5 Test Operation

Part 6 Troubleshooting

Part 7 Replacement Procedure for INV Compressor, VRV II (RXYQ5M to 48M)

Part 8 Appendix

Part 9 Precautions for New Refrigerant (R410)

Index

Drawings & Flow Charts

Quick Links

Troubleshooting

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Summary of Contents for Daikin VRV II RXYQ5MY1B