Page 1 Si39-302 R410A Heat Pump 50Hz...
Page 2: Table Of Contents
Si39-302 R410A Heat Pump 50Hz R410A Heat Pump 50Hz ..............i 1. Introduction .................... vi 1.1 Safety Cautions ..................vi 1.2 PREFACE ....................x Part 1 General Information ............1 1. Model Names of Indoor/Outdoor Units............2 2. External Appearance................3 2.1 Indoor Units ....................3 2.2 Outdoor Units ...................4 3.
Page 3 Si39-302 3.3 Defrosting Operation ................77 3.4 Pump-down Residual Operation ............78 3.5 Restart Standby..................79 3.6 Stopping Operation ................80 3.7 Pressure Equalization prior to Startup............82 4. Protection Control .................83 4.1 High Pressure Protection Control............83 4.2 Low Pressure Protection Control............84 4.3 Discharge Pipe Protection Control ............85 4.4 Inverter Protection Control ..............86 4.5 STD Compressor Overload Protection...........87 5.
Page 4 Si39-302 2.9 “C4” Indoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger ................167 2.10 “C5” Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes..168 2.11 “C9” Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air..169 2.12 “CJ” Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller ................170 2.13 “E1”...
Page 5 Si39-302 2.49 “UE” Malfunction of Transmission Between Central Remote Controller and Indoor Unit..................214 2.50 “UF” Refrigerant System not Set, Incompatible Wiring/Piping ....216 2.51 “UH” Malfunction of System, Refrigerant System Address Undefined...217 3. Troubleshooting (OP: Central Remote Controller) ......218 3.1 “UE” Malfunction of Transmission Between Central Remote Controller and Indoor Unit............218 3.2 “M1”...
Page 6 Si39-302 5. Piping Installation Point...............273 5.1 Piping Installation Point ................273 5.2 The Example of A Wrong Pattern............274 6. Selection of Pipe Size, Joints and Header ..........275 6.1 RXYQ5MY1B, RXYQ8MY1B, RXYQ10MY1B, RXYQ12MY1B, RXYQ14MY1B, RXYQ16MY1B ............275 6.2 RXYQ18MY1B, RXYQ20MY1B, RXYQ22MY1B, RXYQ24MY1B, RXYQ26MY1B, RXYQ28MY1B, RXYQ30MY1B, RXYQ32MY1B, RXYQ34MY1B, RXYQ36MY1B, RXYQ38MY1B, RXYQ40MY1B, RXYQ42MY1B, RXYQ44MY1B, RXYQ46MY1B, RXYQ48MY1B ..277 7.
Page 7: Introduction
Introduction Si39-302 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ Warning” Warnings items are especially important since they can lead to death or serious injury if they are not followed closely.
Page 8 Si39-302 Introduction Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.
Page 9 Introduction Si39-302 Warning Be sure to use the specified cable to connect between the indoor and outdoor units. Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals. Improper connections can cause excessive heat generation or fire.
Page 10 Si39-302 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 2003 VRVII series Heat Pump System. Daikin offers a wide range of models to respond to building and office air conditioning needs. We are confident that customers will be able to find the models that best suit their needs.
Page 12: Part 1 General Information
Si39-302 Part 1 General Information 1. Model Names of Indoor/Outdoor Units............2 2. External Appearance................3 2.1 Indoor Units ....................3 2.2 Outdoor Units ...................4 3. Combination of Outdoor Units..............5 4. Model Selection..................6 General Information...
Page 13: Model Names Of Indoor/Outdoor Units
Model Names of Indoor/Outdoor Units Si39-302 1. Model Names of Indoor/Outdoor Units Indoor Units Type Model Name Power Supply Ceiling mounted FXCQ — 125M — — cassette type (Double flow) Ceiling mounted cassette type FXZQ — — — — — —...
Page 14: External Appearance
Si39-302 External Appearance External Appearance Indoor Units Ceiling mounted cassette type (Double flow) Ceiling mounted duct type FXCQ20M FXMQ40M FXCQ25M FXMQ50M FXCQ32M FXMQ63M FXCQ40M FXMQ80M FXCQ50M FXMQ100M FXMQ40~125M FXCQ63M FXMQ125M FXCQ80M FXMQ200M FXCQ125M FXMQ250M FXMQ200 · 250M Ceiling mounted cassette type Ceiling suspended type (Multi flow) 600×600...
Page 15: Outdoor Units
External Appearance Si39-302 Outdoor Units RXYQ5M RXYQ8M,10M RXYQ12M,14M,16M RXYQ18M, 20M 8,10HP 12,14,16HP 18, 20HP RXYQ22M, 24M, 26M RXYQ28M, 30M, 32M 22, 24, 26HP 28, 30, 32HP RXYQ34M, 36M RXYQ38M, 40M, 42M 34, 36HP 38, 40, 42HP RXYQ44M, 46M, 48M 44, 46, 48HP General Information...
Page 16: Combination Of Outdoor Units
Si39-302 Combination of Outdoor Units 3. Combination of Outdoor Units Module System Capacity Number of units 10HP 12HP 14HP 16HP 18HP 20HP 22HP 24HP 26HP 28HP 30HP 32HP 34HP 36HP 38HP 40HP 42HP 44HP 46HP G G G 48HP 18~48HP are realized by combining 8, 10, 12, 14 and 16HP. General Information...
Page 17: Model Selection
Model Selection Si39-302 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 Si39-302 Model Selection Connectable indoor unit Type Model Name Power Supply Ceiling mounted FXCQ — 125M — — cassette type (Double flow) Ceiling mounted cassette type FXZQ — — — — — — (Multi flow) 600×600 Ceiling mounted FXFQ — 100M 125M —...
Page 19 Model Selection Si39-302 General Information...
Page 20: Part 2 Specifications
Si39-302 Part 2 Specifications 1. Specifications ..................10 1.1 Outdoor Units ..................10 1.2 Indoor Units ....................21 Specifications...
Page 21: Specifications
Specifications Si39-302 Specifications Outdoor Units Model Name RXYQ5MY1B RXYQ8MY1B kcal / h 12,500 20,000 1 Cooling Capacity (19.5°CWB) Btu / h 49,500 78,900 14.5 23.1 2 Cooling Capacity (19.0°CWB) 14.0 22.4 kcal / h 13,800 21,500 3 Heating Capacity Btu / h 54,600 85,400 16.0...
Page 22 Si39-302 Specifications Model Name RXYQ10MY1B RXYQ12MY1B kcal / h 25,000 30,000 1 Cooling Capacity (19.5°CWB) Btu / h 98,700 118,000 28.9 34.6 2 Cooling Capacity (19.0°CWB) 28.0 33.5 kcal / h 27,000 32,300 3 Heating Capacity Btu / h 108,000 128,000 31.5 37.5...
Page 23 Specifications Si39-302 Model Name RXYQ14MY1B RXYQ16MY1B kcal / h 35,500 40,000 1 Cooling Capacity (19.5°CWB) Btu / h 141,000 157,000 41.3 45.9 2 Cooling Capacity (19.0°CWB) 40.0 44.5 kcal / h 38,700 43,000 3 Heating Capacity Btu / h 154,000 171,000 45.0 50.0...
Page 24 Si39-302 Specifications Model Name (Combination Unit) RXYQ18MY1B RXYQ20MY1B Model Name (Independent Unit) RXYQ8MY1B+RXYQ10MY1B RXYQ10MY1B+RXYQ10MY1B kcal / h 45,000 50,000 1 Cooling Capacity (19.5°CWB) Btu / h 178,000 197,000 52.0 57.8 2 Cooling Capacity (19.0°CWB) 50.4 56.0 kcal / h 48,500 54,000 3 Heating Capacity Btu / h...
Page 25 Specifications Si39-302 Model Name (Combination Unit) RXYQ22MY1B RXYQ24MY1B Model Name (Independent Unit) RXYQ10MY1B+RXYQ12MY1B RXYQ10MY1B+RXYQ14MY1B kcal / h 55,000 60,500 1 Cooling Capacity (19.5°CWB) Btu / h 217,000 240,000 63.5 70.2 2 Cooling Capacity (19.0°CWB) 61.5 68.0 kcal / h 59,300 65,700 3 Heating Capacity Btu / h...
Page 26 Si39-302 Specifications Model Name (Combination Unit) RXYQ26MY1B RXYQ28MY1B Model Name (Independent Unit) RXYQ10MY1B+RXYQ16MY1B RXYQ12MY1B+RXYQ16MY1B kcal / h 65,000 70,000 1 Cooling Capacity (19.5°CWB) Btu / h 256,000 275,000 74.9 80.5 2 Cooling Capacity (19.0°CWB) 72.5 78.0 kcal / h 70,000 75,300 3 Heating Capacity Btu / h...
Page 27 Specifications Si39-302 Model Name (Combination Unit) RXYQ30MY1B RXYQ32MY1B Model Name (Independent Unit) RXYQ14MY1B+RXYQ16MY1B RXYQ16MY1B+RXYQ16MY1B kcal / h 75,500 80,000 1 Cooling Capacity (19.5°CWB) Btu / h 298,000 314,000 87.2 91.9 2 Cooling Capacity (19.0°CWB) 84.5 89.0 kcal / h 81,700 86,000 3 Heating Capacity Btu / h...
Page 28 Si39-302 Specifications Model Name (Combination Unit) RXYQ34MY1B RXYQ36MY1B Model Name (Independent Unit) RXYQ10MY1B+RXYQ10MY1B+RXYQ14MY1B RXYQ10MY1B+RXYQ10MY1B+RXYQ16MY1B kcal / h 85,500 90,000 1 Cooling Capacity (19.5°CWB) Btu / h 338,000 354,000 99.1 2 Cooling Capacity (19.0°CWB) 96.0 kcal / h 92,700 97,000 3 Heating Capacity Btu / h 370,000 387,000...
Page 29 Specifications Si39-302 Model Name (Combination Unit) RXYQ38MY1B RXYQ40MY1B Model Name (Independent Unit) RXYQ10MY1B+RXYQ12MY1B+RXYQ16MY1B RXYQ10MY1B+RXYQ14MY1B+RXYQ16MY1B kcal / h 95,000 101,000 1 Cooling Capacity (19.5°CWB) Btu / h 374,000 397,000 2 Cooling Capacity (19.0°CWB) kcal / h 102,000 109,000 3 Heating Capacity Btu / h 407,000 433,000...
Page 30 Si39-302 Specifications Model Name (Combination Unit) RXYQ42MY1B RXYQ44MY1B Model Name (Independent Unit) RXYQ10MY1B+RXYQ16MY1B+RXYQ16MY1B RXYQ12MY1B+RXYQ16MY1B+RXYQ16MY1B kcal / h 105,000 110,000 1 Cooling Capacity (19.5°CWB) Btu / h 413,000 432,000 2 Cooling Capacity (19.0°CWB) kcal / h 113,000 118,000 3 Heating Capacity Btu / h 450,000 470,000...
Page 31 Specifications Si39-302 Model Name (Combination Unit) RXYQ46MY1B RXYQ48MY1B Model Name (Independent Unit) RXYQ14MY1B+RXYQ16MY1B+RXYQ16MY1B RXYQ16MY1B+RXYQ16MY1B+RXYQ16MY1B kcal / h 116,000 120,000 1 Cooling Capacity (19.5°CWB) Btu / h 455,000 471,000 2 Cooling Capacity (19.0°CWB) kcal / h 125,000 129,000 3 Heating Capacity Btu / h 496,000 513,000...
Page 32: Indoor Units
Si39-302 Specifications Indoor Units Ceiling Mounted Cassette Type (Double Flow) Model FXCQ20MVE FXCQ25MVE FXCQ32MVE FXCQ40MVE kcal/h 2,000 2,500 3,150 4,000 # # # # 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 15,900 # # # # 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800...
Page 33 Specifications Si39-302 Ceiling Mounted Cassette Type (Double Flow) Model FXCQ50MVE FXCQ63MVE FXCQ80MVE FXCQ125MVE kcal/h 5,000 6,300 8,000 12,500 # # # # 1 Cooling Capacity (19.5°CWB) Btu/h 19,900 25,000 31,800 49,600 14.5 # # # # 2 Cooling Capacity (19.0°CWB) 14.0 kcal/h 5,400...
Page 34 Si39-302 Specifications Ceiling Mounted Cassette Type (Multi Flow) 600×600 Model FXZQ20MVE FXZQ25MVE FXZQ32MVE kcal/h 2,000 2,500 3,150 # # # # 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 # # # # 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 # # # # 3 Heating Capacity...
Page 35 Specifications Si39-302 Ceiling Mounted Cassette Type (Multi Flow) 600×600 Model FXZQ40MVE FXZQ50MVE kcal/h 4,000 5,000 # # # # 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 # # # # 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 # # # # 3 Heating Capacity Btu/h 17,000...
Page 36 Si39-302 Specifications Ceiling Mounted Cassette Type (Multi-flow) Model FXFQ25MVE FXFQ32MVE FXFQ40MVE FXFQ50MVE kcal/h 2,500 3,150 4,000 5,000 1 Cooling Capacity (19.5°CWB) Btu/h 9,900 12,500 15,900 19,900 2 Cooling Capacity (19.0°CWB) kcal/h 2,800 3,400 4,300 5,400 # # # # 3 Heating Capacity Btu/h 10,900 13,600...
Page 37 Specifications Si39-302 Ceiling Mounted Cassette Type (Multi-flow) Model FXFQ63MVE FXFQ80MVE FXFQ100MVE FXFQ125MVE kcal/h 6,300 8,000 10,000 12,500 1 Cooling Capacity (19.5°CWB) Btu/h 25,000 31,800 39,700 49,600 11.6 14.5 2 Cooling Capacity (19.0°CWB) 11.2 14.0 kcal/h 6,900 8,600 10,800 13,800 # # # # 3 Heating Capacity Btu/h 27,300...
Page 38 Si39-302 Specifications Ceiling Mounted Cassette Corner Type Model FXKQ25MVE FXKQ32MVE FXKQ40MVE FXKQ63MVE kcal/h 2,500 3,150 4,000 6,300 1 Cooling Capacity (19.5°CWB) Btu/h 9,900 12,500 15,900 25,000 2 Cooling Capacity (19.0°CWB) kcal/h 2,800 3,400 4,300 6,900 # # # # 3 Heating Capacity Btu/h 10,900 13,600...
Page 39 Specifications Si39-302 Ceiling Mounted Built-in Type Model FXSQ20MVE FXSQ25MVE FXSQ32MVE kcal/h 2,000 2,500 3,150 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 # # # # 3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Galvanized Steel Plate...
Page 40 Si39-302 Specifications Ceiling Mounted Built-in Type Model FXSQ40MVE FXSQ50MVE FXSQ63MVE kcal/h 4,000 5,000 6,300 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 # # # # 3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Galvanized Steel Plate...
Page 41 Specifications Si39-302 Ceiling Mounted Built-in Type Model FXSQ80MVE FXSQ100MVE FXSQ125MVE kcal/h 8,000 10,000 12,500 1 Cooling Capacity (19.5°CWB) Btu/h 31,800 39,700 49,600 11.6 14.5 2 Cooling Capacity (19.0°CWB) 11.2 14.0 kcal/h 8,600 10,800 13,800 # # # # 3 Heating Capacity Btu/h 34,100 42,700...
Page 42 Si39-302 Specifications Ceiling Mounted Duct Type Model FXMQ40MVE FXMQ50MVE FXMQ63MVE FXMQ80MVE kcal/h 4,000 5,000 6,300 8,000 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 31,800 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 8,600 # # # # 3 Heating Capacity Btu/h 17,000 21,500...
Page 43 Specifications Si39-302 Ceiling Mounted Duct Type Model FXMQ100MVE FXMQ125MVE FXMQ200MVE FXMQ250MVE kcal/h 10,000 12,500 20,000 25,000 1 Cooling Capacity (19.5°CWB) Btu/h 39,700 49,600 79,000 99,000 11.6 14.5 23.0 28.8 2 Cooling Capacity (19.0°CWB) 11.2 14.0 22.4 28.0 kcal/h 10,800 13,800 21,500 27,000 # # # #...
Page 44: Ceiling Suspended Type
Si39-302 Specifications Ceiling Suspended Type Model FXHQ32MVE FXHQ63MVE FXHQ100MVE kcal/h 3,150 6,300 10,000 # # # # 1 Cooling Capacity (19.5°CWB) Btu/h 12,500 25,000 39,700 11.6 # # # # 2 Cooling Capacity (19.0°CWB) 11.2 kcal/h 3,400 6,900 10,800 # # # # 3 Heating Capacity Btu/h 13,600...
Page 45 Specifications Si39-302 Wall Mounted Type Model FXAQ20MVE FXAQ25MVE FXAQ32MVE kcal/h 2,000 2,500 3,150 # # # # 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 # # # # 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 # # # # 3 Heating Capacity Btu/h 8,500...
Page 46 Si39-302 Specifications Wall Mounted Type Model FXAQ40MVE FXAQ50MVE FXAQ63MVE kcal/h 4,000 5,000 6,300 # # # # 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 # # # # 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 # # # # 3 Heating Capacity Btu/h 17,000...
Page 47: Floor Standing Type
Specifications Si39-302 Floor Standing Type Model FXLQ20MVE FXLQ25MVE FXLQ32MVE kcal/h 2,000 2,500 3,150 # # # # 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 # # # # 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 # # # # 3 Heating Capacity Btu/h 8,500...
Page 48 Si39-302 Specifications Floor Standing Type Model FXLQ40MVE FXLQ50MVE FXLQ63MVE kcal/h 4,000 5,000 6,300 # # # # 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 # # # # 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 # # # # 3 Heating Capacity Btu/h 17,000...
Page 49 Specifications Si39-302 Concealed Floor Standing Type Model FXNQ20MVE FXNQ25MVE FXNQ32MVE kcal/h 2,000 2,500 3,150 # # # # 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 # # # # 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 # # # # 3 Heating Capacity Btu/h 8,500...
Page 50 Si39-302 Specifications Concealed Floor Standing Type Model FXNQ40MVE FXNQ50MVE FXNQ63MVE kcal/h 4,000 5,000 6,300 # # # # 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 # # # # 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 # # # # 3 Heating Capacity Btu/h 17,000...
Page 51 Specifications Si39-302 Specifications...
Page 52: Part 3 Refrigerant Circuit
Si39-302 Part 3 Refrigerant Circuit 1. Refrigerant Circuit .................42 1.1 RXYQ5M ....................42 1.2 RXYQ8, 10, 12M ..................44 1.3 RXYQ14, 16M ..................46 2. Functional Parts Layout ................48 2.1 RXYQ5M ....................48 2.2 RXYQ8, 10, 12M ..................49 2.3 RXYQ14, 16M ..................50 3. Refrigerant Flow for Each Operation Mode...........51 Refirgerant Circuit...
Page 53: Refrigerant Circuit
Refrigerant Circuit Si39-302 Refrigerant Circuit RXYQ5M 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 54 Si39-302 Refrigerant Circuit RXYQ5M Refirgerant Circuit...
Page 55: Rxyq8, 10, 12M
Refrigerant Circuit Si39-302 RXYQ8, 10, 12M 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 56 Si39-302 Refrigerant Circuit RXYQ8, 10, 12M Subcooling heat exchanger 4D040338A Refirgerant Circuit...
Page 57: Rxyq14, 16M
Refrigerant Circuit Si39-302 RXYQ14, 16M 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 58 Si39-302 Refrigerant Circuit RXYQ14, 16M Subcooling heat exchanger 4D040339A Refirgerant Circuit...
Page 59: Functional Parts Layout
Functional Parts Layout Si39-302 Functional Parts Layout RXYQ5M Plan Front View Refirgerant Circuit...
Page 60: Rxyq8, 10, 12M
Si39-302 Functional Parts Layout RXYQ8, 10, 12M Plan Front View Refirgerant Circuit...
Page 61: Rxyq14, 16M
Functional Parts Layout Si39-302 RXYQ14, 16M Plan Front View Refirgerant Circuit...
Page 62: Refrigerant Flow For Each Operation Mode
Si39-302 Refrigerant Flow for Each Operation Mode 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 63 Refrigerant Flow for Each Operation Mode Si39-302 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 64 Si39-302 Refrigerant Flow for Each Operation Mode Heating Oil Return & Defrost Operation Indoor unit operation Fan OFF Fan OFF Fan OFF " ON " " OFF " " ON " Heat exchanger Heat exchanger Heat exchanger High temperature, high pressure gas High temperature, high pressure liquid Low temperature, low pressure EXV : 512 pls...
Page 65 Refrigerant Flow for Each Operation Mode Si39-302 Heating Operation Indoor unit operation Fan ON Fan LL Fan OFF " ON " " OFF " " OFF " Heat exchanger Heat exchanger Heat exchanger High temperature, high pressure gas High temperature, high pressure liquid Low temperature, low pressure Electronic Electronic...
Page 66 Si39-302 Refrigerant Flow for Each Operation Mode 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 67 Refrigerant Flow for Each Operation Mode Si39-302 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 68 Si39-302 Refrigerant Flow for Each Operation Mode 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 69 Refrigerant Flow for Each Operation Mode Si39-302 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 70 Si39-302 Refrigerant Flow for Each Operation Mode 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 71 Refrigerant Flow for Each Operation Mode Si39-302 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 72 Si39-302 Refrigerant Flow for Each Operation Mode Heating Oil Return & Defrost Operation Indoor unit operation Fan OFF Fan OFF Fan OFF " ON " " OFF " " ON " Heat exchanger Heat exchanger Heat exchanger High temperature, high pressure gas High temperature, high pressure liquid Low temperature, low pressure EXV : 512 pls...
Page 73 Refrigerant Flow for Each Operation Mode Si39-302 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 74: Part 4 Function
Si39-302 Part 4 Part 4 Part 4 Part 4 Function Function Function Function 1. Operation Mode ..................64 2. Basic Control..................65 2.1 Normal Operation ...................65 2.2 Compressor PI Control................66 2.3 Electronic Expansion Valve PI Control...........72 2.4 Cooling Operation Fan Control...............73 3. Special Control..................74 3.1 Startup Control ..................74 3.2 Oil Return Operation ................75 3.3 Defrosting Operation ................77...
Page 75: Operation Mode
Operation Mode Si39-302 Operation Mode Operation in stop mode Indoor unit stop or Indoor unit thermostat ON thermostat OFF Malfunction/Standby Restart standby Pressure (Compressor stop) equalization prior to startup Malfunction/ Standby Indoor unit stop or thermostat OFF Startup control • Cooling startup Pump-down control residual...
Page 76: Basic Control
Si39-302 Basic Control 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 77: Compressor Pi Control
Basic Control Si39-302 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 78 Si39-302 Basic Control 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 79 Basic Control Si39-302 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 80 Si39-302 Basic Control 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 81 Basic Control Si39-302 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 82 Si39-302 Basic Control 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 83: Electronic Expansion Valve Pi Control
Basic Control Si39-302 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 84: Cooling Operation Fan Control
Si39-302 Basic Control 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<2.8 MPa Pc>3.3 MPa...
Page 85: Special Control
Special Control Si39-302 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. Outdoor unit fan High pressure control 1-step increase with Pc>2.2 MPa...
Page 86: Oil Return Operation
Si39-302 Special Control 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 87: Si39
Special Control Si39-302 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 88: Defrosting Operation
Si39-302 Special Control 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 89: Pump-Down Residual Operation
Special Control Si39-302 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) 0 pls (1400pls) 0 pls ∗Value in ( ) are for RXYQ5M only.
Page 90: Restart Standby
Si39-302 Special Control 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 91: Stopping Operation
Special Control Si39-302 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 charging valve (SVL) Receiver gas discharging valve (SVG)
Page 92 Si39-302 Special Control 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 93: Pressure Equalization Prior To Startup
Special Control Si39-302 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 94: Protection Control
Si39-302 Protection Control 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 95: Low Pressure Protection Control
Protection Control Si39-302 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 96: Discharge Pipe Protection Control
Si39-302 Protection Control 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 97: Inverter Protection Control
Protection Control Si39-302 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 98: Std Compressor Overload Protection
Si39-302 Protection Control STD Compressor Overload Protection This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of STD compressor such as locking. STD compressor ON Demand to operate. CT detection current value>A 200- V unit 400- V unit for more than 3 sec.
Page 99: Other Control
Other Control Si39-302 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 100: Emergency Operation
Si39-302 Other Control 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 101 Other Control Si39-302 • 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 102: Demand Operation
Si39-302 Other Control • 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) (1) Press and hold the MODE button (BS1) for 5 sec. or 7777777 more.
Page 103: Outline Of Control (Indoor Unit)
Outline of Control (Indoor Unit) Si39-302 6. Outline of Control (Indoor Unit) Drain Pump Control 1. The drain pump is controlled by the ON/OFF buttons (4 button (1) - (4) given in the figure below). 6.1.1 When the Float Switch is Tripped While the Cooling Thermostat is ∗...
Page 104 Si39-302 Outline of Control (Indoor Unit) 6.1.3 When the Float Switch is Tripped During Heating Operation: During heating operation, if the float switch is not reset even after the 5 minutes operation, 5 seconds stop, 5 minutes operation cycle ends, operation continues until the switch is reset. 6.1.4 When the Float Switch is Tripped and “AF”...
Page 105: Louver Control For Preventing Ceiling Dirt
Outline of Control (Indoor Unit) Si39-302 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 106: Thermostat Sensor In Remote Controller
Si39-302 Outline of Control (Indoor Unit) 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 107 Outline of Control (Indoor Unit) Si39-302 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 108: Freeze Prevention
Si39-302 Outline of Control (Indoor Unit) Freeze Prevention Freeze When the temperature detected by liquid pipe temperature thermistor (R2T) of the indoor unit heat exchanger drops too low, the unit enters freeze prevention operation in accordance with Prevention by Off the following conditions, and is also set in accordance with the conditions given below.
Page 109 Outline of Control (Indoor Unit) Si39-302 Function...
Page 110: Part 5 Test Operation
Si39-302 Part 5 Test Operation 1. Test Operation ..................100 1.1 Procedure and Outline .................100 1.2 Operation When Power is Turned On ..........103 2. Outdoor Unit PC Board Layout ............104 3. Field Setting ..................105 3.1 Field Setting from Remote Controller ...........105 3.2 Field Setting from Outdoor Unit............117 Test Operation...
Page 111: Test Operation
Test Operation Si39-302 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? ¡...
Page 112 Si39-302 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.
Page 113 Test Operation Si39-302 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 114: Operation When Power Is Turned On
Si39-302 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 115: Outdoor Unit Pc Board Layout
Outdoor Unit PC Board Layout Si39-302 Outdoor Unit PC Board Layout Outdoor unit PC board (2) Set mode display (LED) H1P H2P H3P H4P H5P H6P H7P (3) Mode setting switch MODE RETURN TEST RESET (1) Microcomputer normal monitor 1 2 3 4 1 2 3 4 (4) Local setting switch Connection terminal for transmission use...
Page 116: Field Setting
Si39-302 Field Setting Field Setting Field Setting from Remote Controller Individual function of indoor unit can be changed from the remote controller. At the time of installation or after service inspection / repair, make the local setting in accordance with the following description.
Page 117 Field Setting Si39-302 3.1.2 Wireless Remote Controller - Indoor Unit BRC7C type 1. When in the normal mode, push the button for 4 seconds or more, and operation then enters the “field set mode.” 2. Select the desired “mode No.” with the button.
Page 118 Si39-302 Field Setting 3.1.3 Simplified Remote Controller BRC2A51 Group No. setting by simplified remote controller. 1. Remove the cover of remote controller. 2. While in normal mode, press the [BS6] BUTTON (field set) to enter the FIELD SET MODE. 3. Select the mode No. [00] with [BS2] BUTTON (temperature setting L) and [BS3] BUTTON (temperature setting M).
Page 119 Field Setting Si39-302 3.1.4 Setting Contents and Code No. – VRV 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 120 Si39-302 Field Setting 3.1.5 Applicable range of Field setting Ceiling mounted cassette type Ceiling Ceiling Ceiling Wall Floor Concealed mounted mounted suspended mounted standing Floor Multi Double flow Corner type built-in type duct type type type type standing flow type FXFQ FXCQ FXKQ...
Page 121: Detailed Explanation Of Setting Modes
Field Setting Si39-302 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 122 Si39-302 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 123 Field Setting Si39-302 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 124 Si39-302 Field Setting 3.1.7 Centralized Control Group No. Setting BRC1A Type If carrying out centralized control by central remote controller or unified ON/OFF controller, group No. must be set for each group individually by remote controller. Group No. setting by remote controller for centralized control 1.
Page 125 Field Setting Si39-302 Group No. Setting Example Centoral Remote Controller Indoor/Outdoor Outdoor/Outdoor Indoor/Outdoor Outdoor/Outdoor F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 Group Control by Remote Contoller Main 1-00...
Page 126 Si39-302 Field Setting 3.1.8 Setting of Operation Control Mode from Remote Controller (Local Setting) The operation control mode is compatible with a variety of controls and operations by limiting the functions of the operation remote controller. Furthermore, operations such as remote controller ON/OFF can be limited in accordance with the combination conditions.
Page 127 Field Setting Si39-302 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 128: Field Setting From Outdoor Unit
Si39-302 Field Setting 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 Cool / Heat select Used to set cool / heat select by remote controller DS1-1 equipped with outdoor unit.
Page 129 Field Setting Si39-302 MODE RETURN TEST RESET (V2760) There are the following three setting modes. Setting mode 1 (H1P off) Initial status (when normal) : Used to select the cool/heat setting. Also indicates during “abnormal”, “low noise control” and “demand control”. Setting mode 2 (H1P on) Used to modify the operating status and to set program addresses, etc.
Page 130 Si39-302 Field Setting a. “Setting mode 1” “Normally, “Setting mode 1” is set. In case of other status, push MODE button (BS1) one time and set to “Setting mode 1”. <Selection of setting items> LED display example Push the SET button (BS2) and set Setting (displaying) item LED display to a setting item you want.
Page 131 Field Setting Si39-302 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 132 Si39-302 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 133 Field Setting Si39-302 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) INV compressor 8777787 Emergency operation operation inhibited. 8777777 ∗ Address Binary number 8777778 Cool / Heat Unified address...
Page 134 Si39-302 Field Setting Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set About 20:00 8777778 Night-time low noise 8777787 ∗ About 22:00 (factory operation start setting About 24:00 8777877 About 6:00 8777778 Night-time low noise About 7:00...
Page 135 Field Setting Si39-302 c. Monitor mode LED display Setting item Data display To enter the monitor mode, push the Number of units for sequential 9 7 7 7 7 7 7 See below MODE button (BS1) when in starting, and others “Setting mode 1”.
Page 136 Si39-302 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. Data such as addresses and number of units is expressed as binary numbers; the two ways of expressing are as follows: The No.
Page 137 Field Setting Si39-302 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 138 Si39-302 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 139 Field Setting Si39-302 & 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.
Page 140 Si39-302 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 & . Install cool/heat switching remote controller on the group master outdoor unit. Set SS1 on the group master outdoor unit PC board.
Page 141 Field Setting Si39-302 Address setting for & and ' (Set lower 5 digits with binary number.) [No.0 to No.31] Adapter PCB Address Outdoor unit PCB LED Set with setting mode 2 No 0 77777 No 1 77778 No 2 77787 No 3 77788 No 4...
Page 142 Si39-302 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 143 Field Setting Si39-302 Image of operation in the case of A Image of operation in the case of B Image of operation in the case of A, B Test Operation...
Page 144 Si39-302 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 145 Field Setting Si39-302 Image of operation in the case of A Power consumption The power Rated power consumption consumption during 80 % of rated power consumption Demand level 1 instructing Demand level 2 instructing Demand level 3 instructing the demand level 1 70 % of rated power consumption instructing can be 60 % of rated power consumption...
Page 146 Si39-302 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 147 Field Setting Si39-302 & 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 "...
Page 148 Si39-302 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 149 Field Setting Si39-302 [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 150 Si39-302 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 151 Field Setting Si39-302 Test Operation...
Page 152: Part 6 Troubleshooting
Si39-302 Part 6 Part 6 Part 6 Part 6 Troubleshooting Troubleshooting Troubleshooting Troubleshooting 1. Troubleshooting by Remote Controller ..........143 1.1 The INSPECTION / TEST Button............143 1.2 Self-diagnosis by Wired Remote Controller .........144 1.3 Self-diagnosis by Wireless Remote Controller ........145 1.4 Operation of The Remote Controller’s Inspection / Test Operation Button ................148 1.5 Remote Controller Service Mode ............149 1.6 Remote Controller Self-Diagnosis Function .........151...
Page 153 Si39-302 2.31 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise................191 2.32 “L5” Outdoor Unit: Inverter Compressor Abnormal .......192 2.33 “L8” Outdoor Unit: Inverter Current Abnormal........193 2.34 “L9” Outdoor Unit: Inverter Start up Error..........194 2.35 “LC” Outdoor Unit: Malfunction of Transmission Between Inverter and Control PC Board ..........195 2.36 “P1”...
Page 154: Troubleshooting By Remote Controller
Si39-302 Troubleshooting by Remote Controller 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. Indoor unit settings can be made Service data can be obtained.
Page 155: Self-Diagnosis By Wired Remote Controller
Troubleshooting by Remote Controller Si39-302 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 156: Self-Diagnosis By Wireless Remote Controller
Si39-302 Troubleshooting by Remote Controller Self-diagnosis by Wireless Remote Controller In the Case of If equipment stops due to a malfunction, the operation indicating LED on the light reception section flashes. BRC7C ~ Type The malfunction code can be determined by following the procedure described below. (The malfunction code is displayed when an operation error has occurred.
Page 157 Troubleshooting by Remote Controller Si39-302 The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed. Troubleshooting...
Page 158 Si39-302 Troubleshooting by Remote Controller Troubleshooting...
Page 159: Operation Of The Remote Controller's Inspection / Test Operation Button
Troubleshooting by Remote Controller Si39-302 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 160: Remote Controller Service Mode
Si39-302 Troubleshooting by Remote Controller Remote Controller Service Mode How to Enter the Service Mode Service Mode 1. Select the mode No. Operation Set the desired mode No. with the button. (For wireless remote controller, Mode 43 only can be set.) Method 2.
Page 161 Troubleshooting by Remote Controller Si39-302 Mode Function Contents and operation method Remote controller display example Malfunction Display malfunction hysteresis. hysteresis display The history No. can be changed with the Unit 1 button. Malfunction code 2-U4 Malfunction code Hystory No: 1 - 9 1: Latest (VE007) Display of sensor...
Page 162: Remote Controller Self-Diagnosis Function
Si39-302 Troubleshooting by Remote Controller Remote Controller Self-Diagnosis Function The remote controller switches are equipped with a self diagnosis function so that more appropriate maintenance can be carried out. If a malfunction occurs during operation, the operation lamp, malfunction code and display of malfunctioning unit No. let you know the contents and location of the malfunction.
Page 163 Troubleshooting by Remote Controller Si39-302 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 164 Si39-302 Troubleshooting by Remote Controller Malfunction Operation Inspection Unit No. Malfunction contents Page code lamp display Referred Outdoor Malfunction of power unit — Unit Malfunction of transmission between inverter and control PC board Inverter over-ripple protection Malfunction of inverter radiating fin temperature rise sensor System Low pressure drop due to refrigerant shortage or...
Page 165: Malfunction Code Indication By Outdoor Unit Pcb
Troubleshooting by Remote Controller Si39-302 Malfunction code indication by outdoor unit PCB Monitor mode Contents of malfunction Malfunction To enter the monitor mode, push the code MODE button (BS1) when in “Setting mode 1”. Abnormal discharge pressure HPS activated Abnormal suction pressure Abnormal Pe Compressor lock Detection of INV compressor lock...
Page 166 Si39-302 Troubleshooting by Remote Controller Malfunction Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 code LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED3 LED1 LED2 LED4 LED5 LED6 LED7 : ON : ON Malfunction code 1st...
Page 167: Troubleshooting By Indication On The Remote Controller
Troubleshooting by Indication on the Remote Controller Si39-302 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...
Page 168: A1" Indoor Unit: Pc Board Defect
Si39-302 Troubleshooting by Indication on the Remote Controller “ A1 ” Indoor Unit: PC Board Defect Remote Controller Display Applicable All indoor unit models Models Method of Check data from E²PROM. Malfunction Detection Malfunction When data could not be correctly received from the E²PROM E²PROM : Type of nonvolatile memory.
Page 169: A3" Indoor Unit: Malfunction Of Drain Level Control System (33H)
Troubleshooting by Indication on the Remote Controller Si39-302 “ A3 ” Indoor Unit: Malfunction of Drain Level Control System (33H) Remote Controller Display Applicable FXCQ, FXFQ, FXSQ, FXAQ, FXKQ, FXHQ (Option) , FXMQ (Option) Models Method of By float switch OFF detection Malfunction Detection Malfunction...
Page 170 Si39-302 Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is power supply Provide 220~240V power 220~240V provided? supply. The float A short switch is connected to circuit connector is Connect either a short circuit...
Page 171: A6" Indoor Unit: Fan Motor (M1F) Lock, Overload
Troubleshooting by Indication on the Remote Controller Si39-302 “ 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 172: A7" Indoor Unit: Malfunction Of Swing Flap Motor (Ma)
Si39-302 Troubleshooting by Indication on the Remote Controller “ A7 ” Indoor Unit: Malfunction of Swing Flap Motor (MA) Remote Controller Display Applicable FXCQ, FXAQ, FXFQ, FXHQ, FXKQ Models Method of Utilizes ON/OFF of the limit switch when the motor turns. Malfunction Detection Malfunction...
Page 173 Troubleshooting by Indication on the Remote Controller Si39-302 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is power supply Provide 220~240V power 220~240V provided? supply. Indoor unit is a model equipped Replace indoor unit PC board.
Page 174: A9" Indoor Unit: Malfunction Of Moving Part Of Electronic Expansion Valve (20E)
Si39-302 Troubleshooting by Indication on the Remote Controller “ A9 ” Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (20E) Remote Controller Display Applicable All indoor unit models Models Method of Detection by failure of signal for detecting number of turns to come from the fan motor Malfunction Detection Malfunction...
Page 175 Troubleshooting by Indication on the Remote Controller Si39-302 ∗ 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.
Page 176: Af" Indoor Unit: Drain Level Above Limit
Si39-302 Troubleshooting by Indication on the Remote Controller “ AF ” Indoor Unit: Drain Level above Limit Remote Controller Display Applicable FXCQ, FXFQ, FXSQ, FXKQ, FXMQ Models Method of Water leakage is detected based on float switch ON/OFF operation while the compressor is in non-operation.
Page 177: Aj" Indoor Unit: Malfunction Of Capacity Determination Device
Troubleshooting by Indication on the Remote Controller Si39-302 “ AJ ” Indoor Unit: Malfunction of Capacity Determination Device Remote controller display Applicable All indoor unit models Models Method of Capacity is determined according to resistance of the capacity setting adaptor and the memory inside the IC memory on the indoor unit PC board, and whether the value is normal or abnormal Malfunction is determined.
Page 178: C4" Indoor Unit: Malfunction Of Thermistor (R2T)
Si39-302 Troubleshooting by Indication on the Remote Controller “ C4 ” Indoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger Remote Controller Display Applicable All indoor unit models Models Method of Malfunction detection is carried out by temperature detected by heat exchanger thermistor. Malfunction Detection Malfunction...
Page 179: C5" Indoor Unit: Malfunction Of Thermistor (R3T) For Gas Pipes
Troubleshooting by Indication on the Remote Controller Si39-302 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 180: C9" Indoor Unit: Malfunction Of Thermistor (R1T) For Suction Air
Si39-302 Troubleshooting by Indication on the Remote Controller 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 thermistor.
Page 181: Cj" Indoor Unit: Malfunction Of Thermostat Sensor In
Troubleshooting by Indication on the Remote Controller Si39-302 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 temperature thermistor.
Page 182: E1" Outdoor Unit: Pc Board Defect
Si39-302 Troubleshooting by Indication on the Remote Controller 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 E²PROM : Type of nonvolatile memory.
Page 183: E3" Outdoor Unit: Actuation Of High Pressure Switch
Troubleshooting by Indication on the Remote Controller Si39-302 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...
Page 184: E4" Outdoor Unit: Actuation Of Low Pressure Sensor
Si39-302 Troubleshooting by Indication on the Remote Controller 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 185: E5" Compressor Motor Lock
Troubleshooting by Indication on the Remote Controller Si39-302 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 186: E6" Compressor Motor Overcurrent/Lock
Si39-302 Troubleshooting by Indication on the Remote Controller 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 2 seconds.
Page 187: E7" Malfunction Of Outdoor Unit Fan Motor
Troubleshooting by Indication on the Remote Controller Si39-302 “ E7 ” 2.18 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 188 Si39-302 Troubleshooting by Indication on the Remote Controller Troubleshooting Check No. 12 Check on pulse input of position signal of fan inverter Is the LED (HAP) on fan inverter Replace the fan inverter PCB blinking? PCB. Check No. 8 Check on connector of fan motor (Power supply cable) Are the resistance values...
Page 189: E9" Outdoor Unit: Malfunction Of Moving Part Of
Troubleshooting by Indication on the Remote Controller Si39-302 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 Check continuity of expansion valve coil Malfunction Detection Malfunction...
Page 190 Si39-302 Troubleshooting by Indication on the Remote Controller ∗ 1 Coil check method for the moving part of the electronic expansion valve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins. (Normal) Pin No.
Page 191: F3" Outdoor Unit: Abnormal Discharge Pipe Temperature
Troubleshooting by Indication on the Remote Controller Si39-302 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 temperature sensor. Malfunction Detection Malfunction...
Page 192: F6" Refrigerant Overcharged
Si39-302 Troubleshooting by Indication on the Remote Controller 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 operation.
Page 193: H7" Abnormal Outdoor Fan Motor Signal
Troubleshooting by Indication on the Remote Controller Si39-302 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 194: H9" Outdoor Unit: Malfunction Of Thermistor For Outdoor Air (R1T)
Si39-302 Troubleshooting by Indication on the Remote Controller 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...
Page 195: J2" Current Sensor Malfunction
Troubleshooting by Indication on the Remote Controller Si39-302 “ J2 ” 2.24 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 standard compressor operation.
Page 196: J3" Outdoor Unit: Malfunction Of Discharge
Si39-302 Troubleshooting by Indication on the Remote Controller 2.25 “ J3 ” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R31~33T) Remote Controller Display Applicable RXYQ5~48M Models Method of Malfunction is detected from the temperature detected by discharge pipe temperature thermistor. Malfunction Detection Malfunction...
Page 197: J5" Outdoor Unit: Malfunction Of Thermistor (R2T) For Suction Pipe
Troubleshooting by Indication on the Remote Controller Si39-302 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 thermistor.
Page 198: J6" Outdoor Unit: Malfunction Of Thermistor (R4T) For Outdoor Unit Heat Exchanger
Si39-302 Troubleshooting by Indication on the Remote Controller 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 199: J9" Malfunction Of Receiver Gas Pipe Thermistor (R5T)
Troubleshooting by Indication on the Remote Controller Si39-302 2.28 “ 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...
Page 200: Ja" Outdoor Unit: Malfunction Of Discharge Pipe Pressure Sensor
Si39-302 Troubleshooting by Indication on the Remote Controller 2.29 “ 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...
Page 201: Jc" Outdoor Unit: Malfunction Of Suction Pipe Pressure Sensor
Troubleshooting by Indication on the Remote Controller Si39-302 2.30 “ 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.
Page 202: L4" Outdoor Unit: Malfunction Of Inverter Radiating
Si39-302 Troubleshooting by Indication on the Remote Controller 2.31 “ 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...
Page 203: L5" Outdoor Unit: Inverter Compressor Abnormal
Troubleshooting by Indication on the Remote Controller Si39-302 2.32 “ 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. (Instantaneous overcurrent also causes activation.) Decision Conditions...
Page 204: L8" Outdoor Unit: Inverter Current Abnormal
Si39-302 Troubleshooting by Indication on the Remote Controller 2.33 “ 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 205: L9" Outdoor Unit: Inverter Start Up Error
Troubleshooting by Indication on the Remote Controller Si39-302 2.34 “ 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 206: Lc" Outdoor Unit: Malfunction Of Transmission Between Inverter And Control Pc Board
Si39-302 Troubleshooting by Indication on the Remote Controller 2.35 “ 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- computer.
Page 207 Troubleshooting by Indication on the Remote Controller Si39-302 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 208: P1" Outdoor Unit: Inverter Over-Ripple Protection
Be sure to explain to the user that Give the user a copy of "notification of inspection results"and leave there is a "power supply imbalance" it up to him to improve the imbalance. for which DAIKIN is not responsible. (V2816) Troubleshooting...
Page 209: P4" Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise Sensor
Troubleshooting by Indication on the Remote Controller Si39-302 2.37 “ 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 210: Uo" Low Pressure Drop Due To Refrigerant Shortage Or
Si39-302 Troubleshooting by Indication on the Remote Controller 2.38 “ 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 211: U1" Reverse Phase, Open Phase
Troubleshooting by Indication on the Remote Controller Si39-302 2.39 “ U1 ” Reverse Phase, Open Phase Remote Controller Display Applicable 3 phase outdoor unit only Models Method of Detection is based on the voltage in main circuit capacitor for inverter and supply voltage. The phase of each phase are detected by reverse phase detection circuit and right phase or Malfunction reverse phase are judged.
Page 212: U2" Power Supply Insufficient Or Instantaneous Failure
Si39-302 Troubleshooting by Indication on the Remote Controller 2.40 “ 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...
Page 213 Troubleshooting by Indication on the Remote Controller Si39-302 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 214: U3" Check Operation Not Executed
Si39-302 Troubleshooting by Indication on the Remote Controller “ U3 ” 2.41 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 215: U4" Malfunction Of Transmission Between Indoor Units
Troubleshooting by Indication on the Remote Controller Si39-302 2.42 “ 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 216 Si39-302 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 217: U5" Malfunction Of Transmission Between Remote Controller
Troubleshooting by Indication on the Remote Controller Si39-302 2.43 “ U5 ” Malfunction of Transmission Between Remote Controller and Indoor Unit Remote Controller Display Applicable All models of indoor units Models Method of In case of controlling with 2-remote controller, check the system using microcomputer is signal transmission between indoor unit and remote controller (main and sub) is normal.
Page 218: U7" Malfunction Of Transmission Between Outdoor Units
Si39-302 Troubleshooting by Indication on the Remote Controller 2.44 “ 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 219 Troubleshooting by Indication on the Remote Controller Si39-302 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 220: U8" Malfunction Of Transmission Between Master And Slave Remote Controllers
Si39-302 Troubleshooting by Indication on the Remote Controller 2.45 “ U8 ” Malfunction of Transmission Between Master and Slave Remote Controllers Remote Controller Display Applicable All models of indoor units Models Method of In case of controlling with 2-remote controller, check the system using microcomputer if signal transmission between indoor unit and remote controller (main and sub) is normal.
Page 221: U9" Malfunction Of Transmission Between Indoor And Outdoor Units In The Same System
Troubleshooting by Indication on the Remote Controller Si39-302 2.46 “ U9 ” Malfunction of Transmission Between Indoor and Outdoor Units in the Same System Remote Controller Display Applicable All models of indoor units Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Malfunction of transmission within or outside of other system...
Page 222 Si39-302 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 223: Ua" Excessive Number Of Indoor Units
Troubleshooting by Indication on the Remote Controller Si39-302 2.47 “ 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 Defect of outdoor unit PC board (A1P) Causes Mismatching of the refrigerant type of indoor and outdoor unit.
Page 224: Uc" Address Duplication Of Central Remote Controller
Si39-302 Troubleshooting by Indication on the Remote Controller 2.48 “ UC ” Address Duplication of Central Remote Controller Remote Controller Display Applicable All models of indoor unit Models Centralized controller Method of Malfunction Detection Malfunction Decision Conditions Supposed Address duplication of centralized remote controller Defect of indoor unit PC board Causes Troubleshooting...
Page 225: Ue" Malfunction Of Transmission Between Central Remote Controller And Indoor Unit
Troubleshooting by Indication on the Remote Controller Si39-302 2.49 “ UE ” Malfunction of Transmission Between Central Remote Controller and Indoor Unit Remote Controller Display Applicable All models of indoor units Centralized controller Models Method of Microcomputer checks if transmission between indoor unit and centralized remote controller is normal.
Page 226 Si39-302 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 227: Uf" Refrigerant System Not Set, Incompatible Wiring/Piping
Troubleshooting by Indication on the Remote Controller Si39-302 2.50 “ 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 control adaptor Causes Failure to execute wiring check operation...
Page 228: Uh" Malfunction Of System, Refrigerant System Address Undefined
Si39-302 Troubleshooting by Indication on the Remote Controller 2.51 “ 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 control adaptor Causes Defect of indoor unit PC board...
Page 229: Troubleshooting (Op: Central Remote Controller)
Troubleshooting (OP: Central Remote Controller) Si39-302 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 normal.
Page 230: M1" Pc Board Defect
Si39-302 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 231: M8" Malfunction Of Transmission Between Optional Controllers For Centralized Control
Troubleshooting (OP: Central Remote Controller) Si39-302 “ M8 ” Malfunction of Transmission Between Optional Controllers for Centralized Control Remote Controller Display Applicable Centralized remote controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Malfunction of transmission between optional controllers for centralized control Defect of PC board of optional controllers for centralized control Causes Troubleshooting...
Page 232: Ma" Improper Combination Of Optional Controllers For Centralized Control
Si39-302 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 More than one master controller is connected Causes Defect of PC board of optional controller for centralized control...
Page 233 Troubleshooting (OP: Central Remote Controller) Si39-302 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 234: Mc" Address Duplication, Improper Setting
Si39-302 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, Caution or parts damage may be occurred.
Page 235: Troubleshooting (Op: Schedule Timer)
Troubleshooting (OP: Schedule Timer) Si39-302 Troubleshooting (OP: Schedule Timer) “ UE ” Malfunction of Transmission Between Central Remote Controller and Indoor Unit Remote Controller Display Applicable Schedule timer Models Method of Microcomputer checks if transmission between indoor unit and centralized remote controller is normal.
Page 236 Si39-302 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 237: M1" Pc Board Defect
Troubleshooting (OP: Schedule Timer) Si39-302 “ 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 238: M8" Malfunction Of Transmission Between Optional Controllers For Centralized Control
Si39-302 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 Defect of PC board of optional controllers for centralized control Causes Troubleshooting...
Page 239: Ma" Improper Combination Of Optional Controllers For Centralized Control
Troubleshooting (OP: Schedule Timer) Si39-302 “ MA ” Improper Combination of Optional Controllers for Centralized Control Remote Controller Display Applicable All models of indoor units, schedule timer Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Improper combination of optional controllers for centralized control More than one master controller is connected.
Page 240 Si39-302 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 241: Mc" Address Duplication, Improper Setting
Troubleshooting (OP: Schedule Timer) Si39-302 “ MC ” Address Duplication, Improper Setting Remote Controller Display Applicable All models of indoor units, Models schedule timer Method of Malfunction Detection Malfunction Decision Conditions Supposed Address duplication of optional controller for centralized control Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector,...
Page 242: Troubleshooting (Op: Unified On/Off Controller)
Si39-302 Troubleshooting (OP: Unified ON/OFF Controller) Troubleshooting (OP: Unified ON/OFF Controller) Operation Lamp Blinks Remote Operation lamp blinks Controller Display Applicable All models of indoor units Unified ON/OFF controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Malfunction of transmission between optional controller and indoor unit Connector for setting master controller is disconnected Causes Defect of unified ON/OFF controller...
Page 243 Troubleshooting (OP: Unified ON/OFF Controller) Si39-302 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is a malfunction code displayed on the Diagnose the cause with the remote controller? air conditioner's failure diagnosis manual.
Page 244: Display "Under Host Computer Integrate Control" Blinks (Repeats Single Blink)
Si39-302 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 245 Troubleshooting (OP: Unified ON/OFF Controller) Si39-302 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 246 Si39-302 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 247: Display "Under Host Computer Integrate Control" Blinks (Repeats Double Blink)
Troubleshooting (OP: Unified ON/OFF Controller) Si39-302 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 248 Si39-302 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 249 Troubleshooting (OP: Unified ON/OFF Controller) Si39-302 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 250: Part 7 Replacement Procedure For Inv Compressor, Vrv Ii (Rxyq5M To 48M)
Si39-302 Part 7 Part 7 Part 7 Part 7 Replacement procedure Replacement procedure Replacement procedure Replacement procedure for INV compressor, for INV compressor, for INV compressor, for INV compressor, VRV II (RXYQ5M to 48M) VRV II (RXYQ5M to 48M) VRV II (RXYQ5M to 48M) VRV II (RXYQ5M to 48M) 1.
Page 251: Replacement Procedure For Inv Compressor
Replacement procedure for INV compressor, VRV II (RXYQ5M-48M) Si39-302 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 252: Part 8 Appendix
Si39-302 Part 8 Part 8 Part 8 Part 8 Appendix Appendix Appendix Appendix 1. Piping Diagrams .................242 1.1 Outdoor Unit ..................242 1.2 Indoor Unit ...................245 2. Wiring Diagrams for Reference ............246 2.1 Outdoor Unit ..................246 2.2 Field Wiring ..................249 2.3 Indoor Unit................... 252 3.
Page 253: Piping Diagrams
Piping Diagrams Si39-302 1. Piping Diagrams Outdoor Unit RXYQ5MY1B 4D040337A Appendix...
Page 254 Si39-302 Piping Diagrams RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B 4D040338A Appendix...
Page 255 Piping Diagrams Si39-302 RXYQ14MY1B RXYQ16MY1B 4D040339A Appendix...
Page 256: Indoor Unit
Si39-302 Piping Diagrams Indoor Unit FXCQ, FXZQ, FXFQ, FXKQ, FXSQ, FXMQ, FXHQ, FXAQ, FXLQ, FXNQ Gas piping connection port Heat exchanger Flare connection : φ15.9 or less Attached piping : Above φ19.1 Liquid piping connection port (Flare connection) Electronic Filter Filter expansion valve DU220-602D...
Page 257: Wiring Diagrams For Reference
Wiring Diagrams for Reference Si39-302 2. Wiring Diagrams for Reference Outdoor Unit RXYQ5MY1B Appendix...
Page 258 Si39-302 Wiring Diagrams for Reference RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B Appendix...
Page 259 Wiring Diagrams for Reference Si39-302 RXYQ14MY1B RXYQ16MY1B Appendix...
Page 260: Field Wiring
Si39-302 Wiring Diagrams for Reference Field Wiring RXYQ5~16MY1B Appendix...
Page 261 Wiring Diagrams for Reference Si39-302 RXYQ18~32MY1B Appendix...
Page 262 Si39-302 Wiring Diagrams for Reference RXYQ34~48MY1B Appendix...
Page 263: Indoor Unit
Wiring Diagrams for Reference Si39-302 Indoor Unit FXCQ20M / 25M / 32M / 63MVE Appendix...
Page 264 Si39-302 Wiring Diagrams for Reference FXCQ40M / 50M / 80M/ 125MVE Appendix...
Page 265 Wiring Diagrams for Reference Si39-302 FXZQ20M / 25M / 32M / 40M / 50MVE Appendix...
Page 266 Si39-302 Wiring Diagrams for Reference FXFQ25M / 32M / 40M / 50M / 63M / 80M / 100M / 125MVE Appendix...
Page 267 Wiring Diagrams for Reference Si39-302 FXKQ25M / 32M / 40M / 63MVE Appendix...
Page 268 Si39-302 Wiring Diagrams for Reference FXSQ20M / 25M / 32M / 40M / 50M / 63M / 80M / 100M / 125MVE Appendix...
Page 269 Wiring Diagrams for Reference Si39-302 FXMQ40M / 50M / 63M / 80M / 100M / 125MVE Appendix...
Page 270 Si39-302 Wiring Diagrams for Reference FXMQ200M / 250MVE Appendix...
Page 271 Wiring Diagrams for Reference Si39-302 FXHQ32M / 63M / 100MVE Appendix...
Page 272 Si39-302 Wiring Diagrams for Reference FXAQ20M / 25M / 32MVE / 40M / 50M / 63MVE Appendix...
Page 273 Wiring Diagrams for Reference Si39-302 FXLQ20M / 25M / 32M / 40M / 50M / 63MVE FXNQ20M / 25M / 32M / 40M / 50M / 63MVE Appendix...
Page 274: List Of Electrical And Functional Parts
Si39-302 List of Electrical and Functional Parts List of Electrical and Functional Parts Outdoor Unit 3.1.1 RXYQ5~16MY1B Model Item Name Symbol RXYQ5MY1B RXYQ8MY1B RXYQ10MY1B Compressor Inverter Type JT1FCVDKYR JT1FCVDKTYR JT1FCVDKTYR 3.2kW 1.2kW 2.7kW Output STD.1 Type — JT170FCKYE JT170FCKYE 4.5kW 4.5kW Output STD.2...
Page 275 List of Electrical and Functional Parts Si39-302 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 276: Indoor Side
Si39-302 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 277 List of Electrical and Functional Parts Si39-302 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 1 φ 55W 4P Fan Motor Thermal Fuse 135°C 4.0 µ...
Page 278 Si39-302 List of Electrical and Functional Parts Model Parts Name Symbol Remark FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ 20MVE 25MVE 32MVE 40MVE 50MVE 63MVE 80MVE 100MVE 125MVE Wired Remote BRC1A62 Controller Remote Option Controller Wireless Remote BRC4C62 Controller AC 220~240V 50Hz 1 φ...
Page 279 List of Electrical and Functional Parts Si39-302 Model Parts Name Symbol Remark FXHQ FXHQ FXHQ 32MVE 63MVE 100MVE Wired Remote BRC1A61 Option Remote Controller Controller Wireless Controller BRC7E63W AC 220~240V/220V 50Hz/60Hz 1 φ 63W 1 φ 130W Fan Motor Thermal protector 130°C : OFF 80°C : ON Motors 3.0 µ...
Page 280 Si39-302 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 1 φ 15W 1 φ...
Page 281: Option List
Option List Si39-302 Option List Option List of Controllers Operation Control System Optional Accessories Type FXLQ-M FXCQ-M FXZQ-M FXFQ-M FXKQ-M FXSQ-M FXMQ-M FXHQ-M FXAQ-M FXNQ-M Item Remote Wireless BRC7C62 BRC7E530W BRC7E61W BRC4C61 BRC4C62 BRC7E63W BRC7E618 BRC4C62 controller Wired BRC1A61 BRC1A62 BRC1A61 BRC1A62 Set back time clock...
Page 282 Si39-302 Option List System Configuration Part name Model No. Function ! Up to 64 groups of indoor units (128 units)can be connected, and ON/OFF, Central remote controller DCS302B61 temperature 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 Unified ON/OFF controller DCS301B61...
Page 283: Option Lists (Outdoor Unit)
Option List Si39-302 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 284: Piping Installation Point
Si39-302 Piping Installation Point Piping Installation Point Piping Installation Point Max. 5m Maximum length from a connection Connection Connection kit. 10m or less from first branch. Kit A Kit B (Equivalent Piping Length 13m) Since there is a possibility that oil may be collect ed 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 285: The Example Of A Wrong Pattern
Piping Installation Point Si39-302 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 286: Selection Of Pipe Size, Joints And Header
Si39-302 Selection of Pipe Size, Joints and Header 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 287 Selection of Pipe Size, Joints and Header Si39-302 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 288: Rxyq18My1B, Rxyq20My1B, Rxyq22My1B, Rxyq24My1B
Si39-302 Selection of Pipe Size, Joints and Header 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 289 Selection of Pipe Size, Joints and Header Si39-302 Wall thickness of refrigerant pipe (Unit : mm) Temper grade O Type 1/2H Type φ 6.4 φ 9.5 φ 12.7 φ 15.9 φ 19.1 φ 22.2 φ 25.4 φ 28.6 φ 31.8 φ 34.9 φ 38.1 φ4 1.3 Copper tube O.D Copper tube W.T (Minimum...
Page 290: Outdoor Unit Multi Connection Piping Kit
Si39-302 Selection of Pipe Size, Joints and Header 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 291: Thermistor Resistance / Temperature Characteristics
Thermistor Resistance / Temperature Characteristics Si39-302 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 (k Ω ) T°C T°C 197.81 192.08...
Page 292 Si39-302 Thermistor Resistance / Temperature Characteristics Outdoor Unit Thermistors for Discharge Pipe (R3T) (k Ω )) 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...
Page 293: Pressure Sensor
Pressure Sensor Si39-302 Pressure Sensor = 1.38V-0.69 : Detected Pressure [High Side] MPa = 0.57V-0.28 : Detected Pressure [Low Side] MPa : High pressure (MPa) : Output Voltage [High Side] V Detected Pressure : Low pressure (MPa) : Output Voltage [Low Side] V V : Voltage (V) High Pressure (P Low Pressure (P...
Page 294: Method Of Replacing The Inverter's Power Transistors And Diode Modules
Si39-302 Method of Replacing The Inverter’s Power Transistors and Diode Modules 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 295 Method of Replacing The Inverter’s Power Transistors and Diode Modules Si39-302 Power Transistor IGBT (On Inverter PC Board) (Decision) If other than given above, the power unit is defective and must be replaced. If using a digital tester, ∞ and continuity may be reversed. Note: Diode Module (Decision)
Page 296: Part 9 Precautions For New Refrigerant (R410)
Si39-302 Part 9 Precautions for New Precautions for New Precautions for New Precautions for New Refrigerant (R410) Refrigerant (R410) Refrigerant (R410) Refrigerant (R410) 1. Precautions for New Refrigerant (R410) ..........286 1.1 Outline ....................286 1.2 Refrigerant Cylinders ................288 1.3 Service Tools ..................289 Precautions for New Refrigerant (R410)
Page 297: Precautions For New Refrigerant (R410)
Precautions for New Refrigerant (R410) Si39-302 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 298 Si39-302 Precautions for New Refrigerant (R410) Thermodynamic characteristic of R410A Temperature Steam pressure Density Specific heat at constant Specific enthalpy Specific entropy (kPa) (kg/m pressure (kJ/kgK) (kJ/kg) (kJ/KgK) Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Precautions for New Refrigerant (R410)
Page 299: Refrigerant Cylinders
Precautions for New Refrigerant (R410) Si39-302 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 300: Service Tools
Si39-302 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 301 Precautions for New Refrigerant (R410) Si39-302 1. Flaring tool Flare gauge Specifications 2 Dimension A Unit:mm Tube O.D. -0.4 Nominal size Class-2 (R410A) Class-1 (Conventional) 6.35 9.52 13.2 13.0 12.70 16.6 16.2 15.88 19.7 19.4 19.05 24.0 23.3 Differences 2 Change of dimension A Dimension A For class-1: R407C For class-2: R410A...
Page 302 Si39-302 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 303 Precautions for New Refrigerant (R410) Si39-302 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 304 Si39-302 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 305 Precautions for New Refrigerant (R410) Si39-302 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 306: Index
Si39-302 Index Index Index Index A0 .................156 E1 ................ 171 A1 .................157 E3 ................ 172 A3 .................158 E4 ................ 173 A6 .................160 E5 ................ 174 A7 .................161 E6 ................ 175 A9 .................163 E7 ................ 176 AF ................165 E9 ................ 178 AJ .................166 Electronic Expansion Valve PI Control ....
Page 307 Si39-302 L9 .................194 Malfunction of Transmission Between LC ................195 Indoor and Outdoor Units in the List of Electrical and Functional Parts ....263 Same System ..........210 Indoor Unit .............265 Malfunction of Transmission Between Outdoor Unit ..........263 Inverter and Control PC Board ..... 195 Louver Control for Preventing Ceiling Dirt ....94 Malfunction of Transmission Between Low Pressure Drop Due to Refrigerant...
Page 308 Si39-302 Selection of Pipe Size, Joints and Header ...275 Service Tools ............289 Setting Contents and Code No......108 Setting by dip switches ........117 Setting of Low Noise Operation and Demand Operation ............131 Setting of Refrigerant Additional Charging Operation ............137 Special Control ............74 Specifications ............10 Indoor Units .............21 Outdoor Units ..........10...
Page 309 Si39-302 Index...
Page 310: Drawings & Flow Charts
Si39-302 Drawings & Flow Charts Drawings & Flow Charts Drawings & Flow Charts Drawings & Flow Charts Mode changing procedure ......118 Setting by pushbutton switches ....117 Abnormal Discharge Pipe Temperature ....180 Field Setting from Outdoor Unit Abnormal Outdoor Fan Motor Signal ....182 Setting by dip switches .........
Page 311 Si39-302 Malfunction of Suction Pipe Pressure Sensor ...........190 Refrigerant Circuit ..........42 Malfunction of Swing Flap Motor (MA) ....161 RXYQ14, 16M ..........46 Malfunction of System, Refrigerant RXYQ5M ............42 System Address Undefined ......217 RXYQ8, 10, 12M ..........44 Malfunction of Thermistor (R1T) for Refrigerant Cylinders ..........
Page 312 Head office: Zandvoordestraat 300, B-8400 Oostende, Belgium Umeda Center Bldg., 4-12, Nakazaki-Nishi 2-chome, Kita-ku, Osaka, 530-8323 Japan Tokyo office: Shinjuku Sumitomo Bldg., 6-1 Nishi-Shinjuku 2-chome, Shinjuku-ku, Tokyo, 163-0235 Japan For further improvement, specifications or designs are subject to change without prior notice. Printed in Singapore 04/2003 AK...

Daikin R410As 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

Related Manuals for Daikin R410As

Summary of Contents for Daikin R410As