Page 1 Si39-306 R410A Heat Recovery 50Hz...
Page 2: Table Of Contents
Si39-306 R410A Heat Recovery 50Hz R410A Heat Recovery 50Hz............i 1. Introduction ................... vii 1.1 Safety Cautions ..................vii 1.2 PREFACE ....................xi Part 1 General Information ............1 1. Model Names of Indoor/Outdoor Units............2 External Appearance................3 2.1 Indoor Units ....................3 2.2 Outdoor Units ...................4 3.
Page 3 Si39-306 3. Special Control..................69 Startup Control ..................69 Oil Return Operation ................71 Defrosting Operation ................73 3.4 Pressure Equalizing Control..............74 Pump-down Residual Operation ............75 Restart Standby..................76 Stopping Operation ................77 Pressure Equalization Prior to Startup ...........79 Protection Control .................80 High Pressure Protection Control............80 Low Pressure Protection Control............81 Discharge Pipe Protection Control ............82 Inverter Protection Control ..............83...
Page 4 Si39-306 2.6 “A9” Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (20E).................155 2.7 “AF” Indoor Unit: Drain Level above Limit..........157 2.8 “AJ” Indoor Unit: Malfunction of Capacity Determination Device ..158 2.9 “C4” Indoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger ................159 2.10 “C5”...
Page 5 Si39-306 2.47 “U5” Malfunction of Transmission between Remote Controller and Indoor Unit ..............202 2.48 “U7” Malfunction of Transmission between Outdoor Units ....203 2.49 “U8” Malfunction of Transmission between Master and Slave Remote Controllers .............205 2.50 “U9” Malfunction of Transmission between Indoor and Outdoor Units in the Same System ............206 2.51 “UA”...
Page 6 Si39-306 2. Wiring Diagrams for Reference............242 2.1 Outdoor Unit ..................242 2.2 Field Wiring ..................244 2.3 Indoor Unit....................247 2.4 BS Unit ....................258 List of Electrical and Functional Parts ..........259 Outdoor Unit ..................259 3.2 Indoor Side ...................260 Option List ...................265 4.1 Option List of Controllers..............265 4.2 Option Lists (Outdoor Unit)..............267 Piping Installation Point...............268 5.1 Piping Installation Point ................268...
Page 7: Introduction
Introduction Si39-306 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 Si39-306 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 Si39-306 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 Si39-306 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 Recovery 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
Si39-306 Part 1 General Information 1. Model Names of Indoor/Outdoor Units............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 Si39-306 1. Model Names of Indoor/Outdoor Units Indoor Units Type Model Name Power Supply Ceiling mounted cassette type FXCQ — 125M — — (Double flow) Ceiling mounted cassette type FXZQ — — — — — —...
Page 14: External Appearance
Si39-306 External Appearance External Appearance Indoor Units Ceiling mounted cassette type (Double flow) Ceiling suspended type FXCQ20M FXHQ32M FXCQ25M FXHQ63M FXCQ32M FXHQ100M FXCQ40M FXCQ50M FXCQ63M FXCQ80M FXCQ125M Ceiling mounted cassette type Wall mounted type (Multi flow) 600×600 FXAQ20M FXZQ20M FXAQ25M FXZQ25M FXAQ32M FXZQ32M...
Page 15: Outdoor Units
External Appearance Si39-306 Outdoor Units REYQ8M,10M REYQ12M,14M,16M 8,10HP 12,14,16HP REYQ18M,20M REYQ22M, 24M, 26M 18, 20HP 22, 24, 26HP REYQ28M, 30M, 32M REYQ34M, 36M 28, 30, 32HP 34, 36HP REYQ38M, 40M, 42M REYQ44M, 46M, 48M 38, 40, 42HP 44, 46, 48HP General Information...
Page 16: Combination Of Outdoor Units
Si39-306 Combination of Outdoor Units 3. Combination of Outdoor Units Module System Number of Capacity units 10HP 12HP 14HP 16HP 18HP 20HP 22HP 24HP 26HP 28HP 30HP 32HP 34HP 36HP 38HP 40HP 42HP 44HP 46HP 48HP Up to a maximum 48HP are realized by combining 8, 10, 12, 14 and 16HP. General Information...
Page 17: Model Selection
Model Selection Si39-306 4. Model Selection VRV II Heat Recovery Series Connectable indoor units number and capacity 10HP 12HP 14HP 16HP 18HP System name REYQ8M REYQ10M REYQ12M REYQ14M REYQ16M REYQ18M Outdoor unit 1 REYQ8M REYQ10M REYQ12M REYQ14M REYQ16M REYQ8M Outdoor unit 2 –...
Page 18 Si39-306 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 Si39-306 General Information...
Page 20: Part 2 Specifications
Si39-306 Part 2 Specifications 1. Specifications ..................10 1.1 Outdoor Units ..................10 Indoor Units ....................21 1.3 BS Units ....................40 Specifications...
Page 21: Specifications
Specifications Si39-306 1. Specifications Outdoor Units Model Name REYQ8MY1B REYQ10MY1B kcal / h 20,000 25,000 1 Cooling Capacity (19.5°CWB) Btu / h 78,900 98,700 23.1 28.9 2 Cooling Capacity (19.0°CWB) 22.4 28.0 kcal / h 21,500 27,000 3 Heating Capacity Btu / h 85,400 108,000...
Page 22 Si39-306 Specifications Model Name REYQ12MY1B REYQ14MY1B kcal / h 30,000 35,500 1 Cooling Capacity (19.5°CWB) Btu / h 118,000 141,000 34.6 41.3 2 Cooling Capacity (19.0°CWB) 33.5 40.0 kcal / h 32,300 38,700 3 Heating Capacity Btu / h 128,000 154,000 37.5 45.0...
Page 23 Specifications Si39-306 REYQ18MY1B Model Name REYQ16MY1B REYQ8MY1B+REYQ10MY1B kcal / h 40,000 45,000 1 Cooling Capacity (19.5°CWB) Btu / h 157,000 178,000 45.9 52.0 2 Cooling Capacity (19.0°CWB) 44.5 50.4 kcal / h 43,000 48,500 3 Heating Capacity Btu / h 171,000 193,000 50.0...
Page 24 Si39-306 Specifications Model Name (Combination Unit) REYQ20MY1B REYQ22MY1B Model Name (Independent Unit) REYQ10MY1B+REYQ10MY1B REYQ10MY1B+REYQ12MY1B kcal / h 50,000 55,000 1 Cooling Capacity (19.5°CWB) Btu / h 197,000 217,000 57.8 63.5 2 Cooling Capacity (19.0°CWB) 56.0 61.5 kcal / h 54,000 59,300 3 Heating Capacity Btu / h...
Page 25 Specifications Si39-306 Model Name (Combination Unit) REYQ24MY1B REYQ26MY1B Model Name (Independent Unit) REYQ10MY1B+REYQ14MY1B REYQ10MY1B+REYQ16MY1B kcal / h 60,500 65,000 1 Cooling Capacity (19.5°CWB) Btu / h 240,000 256,000 70.2 74.9 2 Cooling Capacity (19.0°CWB) 68.0 72.5 kcal / h 65,700 70,000 3 Heating Capacity Btu / h...
Page 26 Si39-306 Specifications Model Name (Combination Unit) REYQ28MY1B REYQ30MY1B Model Name (Independent Unit) REYQ12MY1B+REYQ16MY1B REYQ14MY1B+REYQ16MY1B kcal / h 70,000 75,500 1 Cooling Capacity (19.5°CWB) Btu / h 275,000 298,000 80.5 87.2 2 Cooling Capacity (19.0°CWB) 78.0 84.5 kcal / h 75,300 81,700 3 Heating Capacity Btu / h...
Page 27 Specifications Si39-306 Model Name (Combination Unit) REYQ32MY1B REYQ34MY1B Model Name (Independent Unit) REYQ16MY1B+REYQ16MY1B REYQ10MY1B+REYQ10MY1B+REYQ14MY1B kcal / h 80,000 85,500 1 Cooling Capacity (19.5°CWB) Btu / h 314,000 338,000 91.9 99.1 2 Cooling Capacity (19.0°CWB) 89.0 96.0 kcal / h 86,000 92,700 3 Heating Capacity Btu / h...
Page 28 Si39-306 Specifications Model Name (Combination Unit) REYQ36MY1B REYQ38MY1B Model Name (Independent Unit) REYQ10MY1B+REYQ10MY1B+REYQ16MY1B REYQ10MY1B+REYQ12MY1B+REYQ16MY1B kcal / h 90,000 95,000 1 Cooling Capacity (19.5°CWB) Btu / h 354,000 374,000 2 Cooling Capacity (19.0°CWB) kcal / h 97,000 102,000 3 Heating Capacity Btu / h 387,000 407,000...
Page 29 Specifications Si39-306 Model Name (Combination Unit) REYQ40MY1B REYQ42MY1B Model Name (Independent Unit) REYQ10MY1B+REYQ14MY1B+REYQ16MY1B REYQ10MY1B+REYQ16MY1B+REYQ16MY1B kcal / h 101,000 105,000 1 Cooling Capacity (19.5°CWB) Btu / h 397,000 413,000 2 Cooling Capacity (19.0°CWB) kcal / h 109,000 113,000 3 Heating Capacity Btu / h 433,000 450,000...
Page 30 Si39-306 Specifications Model Name (Combination Unit) REYQ44MY1B REYQ46MY1B Model Name (Independent Unit) REYQ12MY1B+REYQ16MY1B+REYQ16MY1B REYQ14MY1B+REYQ16MY1B+REYQ16MY1B kcal / h 110,000 116,000 1 Cooling Capacity (19.5°CWB) Btu / h 432,000 455,000 2 Cooling Capacity (19.0°CWB) kcal / h 118,000 125,000 3 Heating Capacity Btu / h 470,000 496,000...
Page 31 Specifications Si39-306 Model Name (Combination Unit) REYQ48MY1B Model Name (Independent Unit) REYQ16MY1B+REYQ16MY1B+REYQ16MY1B kcal / h 120,000 1 Cooling Capacity (19.5°CWB) Btu / h 471,000 2 Cooling Capacity (19.0°CWB) kcal / h 129,000 3 Heating Capacity Btu / h 513,000 Casing Color Ivory White (5Y7.5/1) Dimensions: (H×W×D) (1600×1240×765)+(1600×1240×765)+(1600×1240×765)
Page 32: Indoor Units
Si39-306 Specifications Indoor Units Ceiling Mounted Cassette Type (Double Flow) Model FXCQ20MVE FXCQ25MVE FXCQ32MVE FXCQ40MVE kcal/h 2,000 2,500 3,150 4,000 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 15,900 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 4,300 3 Heating Capacity Btu/h 8,500 10,900...
Page 33 Specifications Si39-306 Ceiling Mounted Cassette Type (Double Flow) Model FXCQ50MVE FXCQ63MVE FXCQ80MVE FXCQ125MVE kcal/h 5,000 6,300 8,000 12,500 1 Cooling Capacity (19.5°CWB) Btu/h 19,900 25,000 31,800 49,600 14.5 2 Cooling Capacity (19.0°CWB) 14.0 kcal/h 5,400 6,900 8,600 13,800 3 Heating Capacity Btu/h 21,500 27,300...
Page 34 Si39-306 Specifications Ceiling Mounted Cassette Type (Multi Flow)600×600 Model FXZQ20MVE FXZQ25MVE FXZQ32MVE kcal/h 2,000 2,500 3,150 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate...
Page 35 Specifications Si39-306 Ceiling Mounted Cassette Type (Multi Flow)600×600 Model FXZQ40MVE FXZQ50MVE kcal/h 4,000 5,000 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 3 Heating Capacity Btu/h 17,000 21,500 Casing Galvanized Steel Plate Galvanized Steel Plate Dimensions: (H×W×D) 260×575×575 260×575×575...
Page 36 Si39-306 Specifications Ceiling Mounted Cassette Type (Multi-flow) Model FXFQ25MVE FXFQ32MVE FXFQ40MVE FXFQ50MVE kcal/h 2,500 3,150 4,000 5,000 1 Cooling Capacity (19.5°CWB) Btu/h 9,900 12,500 15,900 19,900 2 Cooling Capacity (19.0°CWB) kcal/h 2,800 3,400 4,300 5,400 3 Heating Capacity Btu/h 10,900 13,600 17,000 21,500...
Page 37 Specifications Si39-306 Ceiling Mounted Cassette Type (Multi-flow) Model FXFQ63MVE FXFQ80MVE FXFQ100MVE FXFQ125MVE kcal/h 6,300 8,000 10,000 12,500 1 Cooling Capacity (19.5°CWB) Btu/h 25,000 31,800 39,700 49,600 11.6 14.5 2 Cooling Capacity (19.0°CWB) 11.2 14.0 kcal/h 6,900 8,600 10,800 13,800 3 Heating Capacity Btu/h 27,300 34,100...
Page 38 Si39-306 Specifications Ceiling Mounted Cassette Corner Type Model FXKQ25MVE FXKQ32MVE FXKQ40MVE FXKQ63MVE kcal/h 2,500 3,150 4,000 6,300 1 Cooling Capacity (19.5°CWB) Btu/h 9,900 12,500 15,900 25,000 2 Cooling Capacity (19.0°CWB) kcal/h 2,800 3,400 4,300 6,900 3 Heating Capacity Btu/h 10,900 13,600 17,000 27,300...
Page 39 Specifications Si39-306 Ceiling Mounted Built-in Type Model FXSQ20MVE FXSQ25MVE FXSQ32MVE kcal/h 2,000 2,500 3,150 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate Dimensions: (H×W×D)
Page 40 Si39-306 Specifications Ceiling Mounted Built-in Type Model FXSQ40MVE FXSQ50MVE FXSQ63MVE kcal/h 4,000 5,000 6,300 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate Dimensions: (H×W×D)
Page 41 Specifications Si39-306 Ceiling Mounted Built-in Type Model FXSQ80MVE FXSQ100MVE FXSQ125MVE kcal/h 8,000 10,000 12,500 1 Cooling Capacity (19.5°CWB) Btu/h 31,800 39,700 49,600 11.6 14.5 2 Cooling Capacity (19.0°CWB) 11.2 14.0 kcal/h 8,600 10,800 13,800 3 Heating Capacity Btu/h 34,100 42,700 54,600 10.0 12.5...
Page 42 Si39-306 Specifications Ceiling Mounted Duct Type Model FXMQ40MVE FXMQ50MVE FXMQ63MVE FXMQ80MVE kcal/h 4,000 5,000 6,300 8,000 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 31,800 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 8,600 3 Heating Capacity Btu/h 17,000 21,500 27,300 34,100 10.0...
Page 43 Specifications Si39-306 Ceiling Mounted Duct Type Model FXMQ100MVE FXMQ125MVE FXMQ200MVE FXMQ250MVE kcal/h 10,000 12,500 20,000 25,000 1 Cooling Capacity (19.5°CWB) Btu/h 39,700 49,600 79,000 99,000 11.6 14.5 23.0 28.8 2 Cooling Capacity (19.0°CWB) 11.2 14.0 22.4 28.0 kcal/h 10,800 13,800 21,500 27,000 3 Heating Capacity...
Page 44 Si39-306 Specifications Ceiling Suspended Type Model FXHQ32MVE FXHQ63MVE FXHQ100MVE kcal/h 3,150 6,300 10,000 1 Cooling Capacity (19.5°CWB) Btu/h 12,500 25,000 39,700 11.6 2 Cooling Capacity (19.0°CWB) 11.2 kcal/h 3,400 6,900 10,800 3 Heating Capacity Btu/h 13,600 27,300 42,700 12.5 Casing Color White (10Y9/0.5) White (10Y9/0.5) White (10Y9/0.5)
Page 45 Specifications Si39-306 Wall Mounted Type Model FXAQ20MVE FXAQ25MVE FXAQ32MVE kcal/h 2,000 2,500 3,150 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color White (10Y9/0.5) White (10Y9/0.5) White (10Y9/0.5) Dimensions: (H×W×D)
Page 46 Si39-306 Specifications Wall Mounted Type Model FXAQ40MVE FXAQ50MVE FXAQ63MVE kcal/h 4,000 5,000 6,300 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Color White (B-272) White (B-272) White (B-272) Dimensions: (H×W×D)
Page 47 Specifications Si39-306 Floor Standing Type Model FXLQ20MVE FXLQ25MVE FXLQ32MVE kcal/h 2,000 2,500 3,150 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Dimensions: (H×W×D)
Page 48 Si39-306 Specifications Floor Standing Type Model FXLQ40MVE FXLQ50MVE FXLQ63MVE kcal/h 4,000 5,000 6,300 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Color Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) Dimensions: (H×W×D)
Page 49 Specifications Si39-306 Concealed Floor Standing Type Model FXNQ20MVE FXNQ25MVE FXNQ32MVE kcal/h 2,000 2,500 3,150 1 Cooling Capacity (19.5°CWB) Btu/h 7,900 9,900 12,500 2 Cooling Capacity (19.0°CWB) kcal/h 2,200 2,800 3,400 3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate Dimensions: (H×W×D)
Page 50 Si39-306 Specifications Concealed Floor Standing Type Model FXNQ40MVE FXNQ50MVE FXNQ63MVE kcal/h 4,000 5,000 6,300 1 Cooling Capacity (19.5°CWB) Btu/h 15,900 19,900 25,000 2 Cooling Capacity (19.0°CWB) kcal/h 4,300 5,400 6,900 3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Color Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate Dimensions: (H×W×D)
Page 51: Bs Units
Specifications Si39-306 BS Units Model BSVQ100MV1 BSVQ160MV1 BSVQ250MV1 Power Supply 1 Phase 50Hz 220~240V 1 Phase 50Hz 220~240V 1 Phase 50Hz 220~240V Total Capacity Index of Indoor Unit Less than 100 100 or more but less than 160 160 or more but 250 or less No.
Page 52: Part 3 Refrigerant Circuit
Si39-306 Part 3 Refrigerant Circuit Refrigerant Circuit .................42 REYQ8, 10, 12M ..................42 REYQ14, 16M ..................44 1.3 BSVQ100, 160, 250M ................46 Functional Parts Layout ................47 REYQ8, 10, 12M ..................47 2.2 REYQ14, 16M ..................49 3. Refrigerant Flow for Each Operation Mode...........51 Refirgerant Circuit...
Page 53: Refrigerant Circuit
Refrigerant Circuit Si39-306 Refrigerant Circuit REYQ8, 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 54 Si39-306 Refrigerant Circuit REYQ8, 10, 12M Refirgerant Circuit...
Page 55: Reyq14, 16M
Refrigerant Circuit Si39-306 REYQ14, 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 the inverter, while Standard compressor is operated with Standard compressor 1 (STD1) commercial power supply only.
Page 56 Si39-306 Refrigerant Circuit REYQ14, 16M Refirgerant Circuit...
Page 57: Bsvq100, 160, 250M
Refrigerant Circuit Si39-306 BSVQ100, 160, 250M Symbol Name Major function Solenoid valve (20RT) Used to sub-cool the liquid refrigerant Solenoid valve (20RH) Used to changeover the cooling and heating operation of indoor units Refirgerant Circuit...
Page 58: Functional Parts Layout
Si39-306 Functional Parts Layout Functional Parts Layout REYQ8, 10, 12M 2.1.1 Functional Parts Layout (Solenoid Valve etc.) Plan Solenoid valve (Receiver gas discharge Y4S) Front view Solenoid valve (Oil equalizing of multi outdoor system Y2S) Fan motor M1F Solenoid valve (Hot gas Y1S) Solenoid valve (Receiver gas changing Y3S)
Page 59 Functional Parts Layout Si39-306 2.1.2 Sensor, Pressure Switch Relating Plan Thermistor (Receiver outlet liquid pipe) Front View Thermistor (Sub heat exchanger gas pipe) R82T Pressure sensor (High pressure) S1NPH Thermistor (Sub cooling heat exchanger outlet) Pressure switch Thermistor (High pressure INV) S1PH (Main heat exchanger gas pipe) R81T...
Page 60: Reyq14, 16M
Si39-306 Functional Parts Layout REYQ14, 16M 2.2.1 Functional Parts Layout (Solenoid Valve etc.) Plan Solenoid valve (Receiver gas discharge Y4S) Front View Solenoid valve Solenoid valve (Oil equalizing of multi Fan motor M1F (Hot gas Y1S) outdoor system Y2S) 4 way valve (Sub 20S2) Solenoid valve (Receiver gas changing Y3S) Solenoid valve...
Page 61 Functional Parts Layout Si39-306 2.2.2 Sensor, Pressure Switch Relating Plan Thermistor (Receiver outlet liquid pipe) Thermistor (Sub cooling heat exchanger gas pipe) Front View Pressure sensor (High pressure) S1NPH Pressure switch (High pressure INV) Thermistor S1PH (Sub heat exchanger gas pipe) R82T Pressure switch (High pressure STD1)
Page 62: Refrigerant Flow For Each Operation Mode
Si39-306 Refrigerant Flow for Each Operation Mode 3. Refrigerant Flow for Each Operation Mode Cooling Operation Refirgerant Circuit...
Page 63 Refrigerant Flow for Each Operation Mode Si39-306 Simultaneous Cooling/Heating Operation-MODE A Refirgerant Circuit...
Page 64 Si39-306 Refrigerant Flow for Each Operation Mode Simultaneous Cooling/Heating Operation-MODE B Refirgerant Circuit...
Page 65 Refrigerant Flow for Each Operation Mode Si39-306 Heating or Simultaneous Cooling/Heating Operation-MODE C (In case there are indoor units operating with cooling thermostat “ON”.) Refirgerant Circuit...
Page 66 Si39-306 Refrigerant Flow for Each Operation Mode Heating or Simultaneous Cooling/Heating Operation-MODE C (In case there are indoor units operating all heating or not operation by cooling thermostat “OFF”.) Refirgerant Circuit...
Page 67 Refrigerant Flow for Each Operation Mode Si39-306 Oil Return or Defrost Operation Refirgerant Circuit...
Page 68: Part 4 Function
Si39-306 Part 4 Part 4 Part 4 Part 4 Function Function Function Function 1. Operation Mode ..................58 2. Basic Control..................59 2.1 Normal Operation ...................59 2.2 Compressor PI Control................60 2.3 Electronic Expansion Valve PI Control...........66 2.4 Cooling Operation Fan Control...............67 2.5 Heat Exchange Mode in Heating Operation or Simultaneous Cooling / Heating Operation ..............68 3.
Page 69: Operation Mode
Operation Mode Si39-306 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 70: Basic Control
Si39-306 Basic Control Basic Control Normal Operation Cooling Operation Actuator Operation Remarks Used for high pressure control, low pressure protection control,discharge pipe temperature Compressor Compressor PI control protection control, and compressor operating frequency upper limit control with inverter protection control. ...
Page 71: Compressor Pi Control
Basic Control Si39-306 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 72 Si39-306 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 73 Basic Control Si39-306 REYQ8,10,12M REYQ14,16M STEP STD1 STEP STD1 STD2 52Hz 52Hz 57Hz 57Hz 62Hz 62Hz 68Hz 68Hz 74Hz 74Hz 81Hz 81Hz 88Hz 88Hz 96Hz 96Hz 104Hz 104Hz 110Hz 110Hz 116Hz 116Hz 124Hz 124Hz 133Hz 133Hz 143Hz 143Hz 158Hz 158Hz 165Hz 165Hz 177Hz...
Page 74 Si39-306 Basic Control REYQ30,32M REYQ34,36,38M 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 75 Basic Control Si39-306 REYQ40,42,44M 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 76 Si39-306 Basic Control REYQ46,48M 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 77: Electronic Expansion Valve Pi Control
Basic Control Si39-306 Electronic Expansion Valve PI Control Main Motorized Valve EV1 Control, Sub Motorized Valve EV2 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 78: Cooling Operation Fan Control
Si39-306 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 79: Heat Exchange Mode In Heating Operation Or Simultaneous Cooling / Heating Operation
Basic Control Si39-306 Heat Exchange Mode in Heating Operation or Simultaneous Cooling / Heating Operation In heating or simultaneous cooling / heating operation, a target condensing and evaporating temperature can be secured by switching the air heat exchanger of the outdoor unit (main, sub) into evaporator or condenser with load.
Page 80: Special Control
Si39-306 Special Control Special Control Startup Control This startup control is used to provide the following control to reduce the compressor load resulting from liquid return or else during compressor startup, and also determine the position of four way valves. 3.1.1 Startup Control in Cooling Operation Actuator Operation...
Page 81 Special Control Si39-306 3.1.2 Startup Control in Heating Operation Actuator Operation Remarks Compressor operating frequency Compressor Differential pressure control increases by 1 step until Pc - Pe > 0.4 MPa.  Outdoor unit fan STEP9  Four way valve 1 ...
Page 82: Oil Return Operation
Si39-306 Special Control Oil Return Operation In order to prevent the running-out of refrigerating machine oil in the compressor, the oil flowing out from the compressor to the system side is collected through the oil return operation. 3.2.1 Oil Return Operation in Cooling Operation [Starting conditions] Start oil return operation in cooling operation referring to the following conditions.
Page 83 Special Control Si39-306 3.2.2 Oil Return Operation in Heating Operation [Starting conditions] Start oil return operation in heating operation referring to the following conditions. Cumulative compressor operating time after power supply turns on exceeds 2 hours and the time after the completion of previous oil return operation exceeds 8 hours. And cumulative oil return is calculated based on To, Te compressor load.
Page 84: Defrosting Operation
Si39-306 Special Control Defrosting Operation In order to melt the frost accumulated on the heat exchanger during heating operation, Defrost operation is performed to restore the heating capacity. [Starting conditions] Start defrosting operation referring to the following conditions. * Heat conductivity of outdoor heat exchangers * Heat exchange temperature (Tb) * Timer (Min.
Page 85: Pressure Equalizing Control
Special Control Si39-306 Pressure Equalizing Control This pressure equalization control is used to equalize the pressure of discharge piping and suction piping in order to reduce refrigerant passing noise when changing over the BS units. [Starting conditions] The temperature control of indoor units with thermostat ON does not match up with the state of the BS unit changeover valve to which the indoor units are connected.
Page 86: Pump-Down Residual Operation
Si39-306 Special Control Pump-down Residual Operation If any liquid refrigerant remains in the heat exchanger during compressor startup, the liquid refrigerant will enter the compressor, resulting in the dilution of the refrigerating machine oil in the compressor and the degradation of lubricating capacity. Therefore, before the compressor stops, pump-down operation is performed to collect the refrigerant in the heat exchanger.
Page 87: Restart Standby
Special Control Si39-306 Restart Standby Forced standby is performed to prevent frequent repetition of ON/OFF of the compressor, and to equalize pressure in the refrigerant system. Actuator Operation Remarks  Compressor Ta>30°C: STEP5  Outdoor unit fan Ta≤30°C: OFF  Four way valve 1 Holds ON ...
Page 88: Stopping Operation
Si39-306 Special Control Stopping Operation This operation is used to define the operation of the actuator while the system stops. 3.7.1 When System is in Stop Mode Actuator Operation Compressor Outdoor unit fan Four way valve 1 Holds ON Four way valve 2 Holds ON Main motorized valve (EV1) 0 pls...
Page 89 Special Control Si39-306 3.7.2 Stopping Operation of Slave Units During Master Unit is in Operation with Multi-Outdoor-Unit System This operation is used to make adjustments of required refrigerant amount with non-operating slave units while the master unit is in operation. In cooling operation : The system operates in mode A or mode B listed in the table below.
Page 90: Pressure Equalization Prior To Startup
Si39-306 Special Control Pressure Equalization Prior to Startup This operation is used to reduce the compressor startup load by equalizing the pressure before and after the compressor prior to the startup of the compressor. This operation is also used to turn the inverter on and charge the capacitor. Actuator Operation Compressor...
Page 91: Protection Control
Protection Control Si39-306 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 92: Low Pressure Protection Control
Si39-306 Protection Control Low Pressure Protection Control This low pressure protection control is used to protect compressors against the transient decrease of low pressure. [In cooling operation] In the case of multi-outdoor-unit system, the entire system performs this control in the following sequence.
Page 93: Discharge Pipe Protection Control
Protection Control Si39-306 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 94: Inverter Protection Control
Si39-306 Protection Control Inverter Protection Control Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase. In the case of multi-outdoor-unit system, each INV compressor performs these controls in the following sequence.
Page 95: Std Compressor Overload Protection
Protection Control Si39-306 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 96: Other Control
Si39-306 Other Control Other Control Outdoor Unit Rotation In the case of multi-outdoor-unit system, this outdoor unit rotation is used to prevent the compressor from burning out due to unbalanced oil level between outdoor units. [Details of outdoor unit rotation] In the case of multi-outdoor-unit system, each outdoor unit is given an operating priority for the control.
Page 97: Emergency Operation
Other Control Si39-306 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 98 Si39-306 Other Control • With REYQ14M and 16M, if INV compressor is inhibited from operating, only 1 STD compressor can operate for reasons of oil equalization. • With REYQ14M and 16M, STD1 compressor cannot be inhibited from operating for reasons of oil equalization.
Page 99: Demand Operation
Other Control Si39-306 • To inhibit the slave unit 2 from operating → Set LED display (7:ON :OFF :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 777777 more.
Page 100: Outline Of Control (Indoor Unit)
Si39-306 Outline of Control (Indoor Unit) 6. Outline of Control (Indoor Unit) Drain Pump Control 1. The drain pump is controlled by the ON/OFF buttons (4 button (1) - (4) given in the figure below). 6.1.1 When the Float Switch is Tripped While the Cooling Thermostat is ∗...
Page 101 Outline of Control (Indoor Unit) Si39-306 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 102: Louver Control For Preventing Ceiling Dirt
Si39-306 Outline of Control (Indoor Unit) Louver Control for Preventing Ceiling Dirt We have added a control feature that allows you to select the range of in which air direction can be adjusted in order to prevent the ceiling surrounding the air discharge outlet of ceiling mounted cassette type units from being soiled.
Page 103: Thermostat Sensor In Remote Controller
Outline of Control (Indoor Unit) Si39-306 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 104 Si39-306 Outline of Control (Indoor Unit) Heating When heating, the hot air rises to the top of the room, resulting in the temperature being lower near the floor where the occupants are. When controlling by body thermostat sensor only, the unit may therefore be turned off by the thermostat before the lower part of the room reaches the preset temperature.
Page 105: Freeze Prevention
Outline of Control (Indoor Unit) Si39-306 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 106: Part 5 Test Operation
Si39-306 Part 5 Test Operation Test Operation ..................96 Procedure and Outline ................96 Operation When Power is Turned On ............99 Outdoor Unit PC Board Layout ............100 Field Setting ..................101 3.1 Field Setting from Remote Controller ...........101 3.2 Field Setting from Outdoor Unit............113 Test Operation...
Page 107: Test Operation
Test Operation Si39-306 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 108 Si39-306 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 109 Test Operation Si39-306 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 110: Operation When Power Is Turned On
Si39-306 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 111: Outdoor Unit Pc Board Layout
Outdoor Unit PC Board Layout Si39-306 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 112: Field Setting
Si39-306 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 113 Field Setting Si39-306 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 114 Si39-306 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 ) and [BS3] BUTTON (temperature setting 4.
Page 115 Field Setting Si39-306 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 116 Si39-306 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 117 Field Setting Si39-306 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 118 Si39-306 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 119 Field Setting Si39-306 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 120 Si39-306 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 121 Field Setting Si39-306 Group No. Setting Example Centralized 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 122 Si39-306 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 123 Field Setting Si39-306 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 124: Field Setting From Outdoor Unit
Si39-306 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 DS1-1 Not used Do not change the factory settings. OFF (Factory set) DS1-2 Not used...
Page 125 Field Setting Si39-306 MODE RETURN TEST RESET (V2760) There are the following three setting modes. Setting mode 1 (H1P off) Initial status (when normal) : 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. Usually used in servicing the system.
Page 126 Si39-306 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 127 Field Setting Si39-306 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 comfortableness is (BS1) for 5 seconds and set to operation 1) extremely deteriorated, immediately replace the “Setting mode 2”.
Page 128 Si39-306 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 129 Field Setting Si39-306 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 Low noise/demand...
Page 130 Si39-306 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 131 Field Setting Si39-306 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 132 Si39-306 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 133 Field Setting Si39-306 3.2.2 Cool / Heat Mode Switching Set Cool/Heat Separately for Each BS Unit by Cool/Heat Selector. Set remote controller change over switch (SS1, SS2) as following: • When using COOL/HEAT selector, turn this switch to the BS side. NOTE: This setting must be completed before turning power supply ON.
Page 134 Si39-306 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 135 Field Setting Si39-306 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 136 Si39-306 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 137 Field Setting Si39-306 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 138 Si39-306 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 139 Field Setting Si39-306 Setting Setting Setting No. indication Setting No. indication Setting Setting contents indication (Initial setting) contents contents H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P Night-time low noise (Factory...
Page 140 Si39-306 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 141 Field Setting Si39-306 [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 142 Si39-306 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 143 Field Setting Si39-306 3.2.8 Power Transistor Check Operation When the inverter system malfunctions (malfunction of inverter, INV compressor), to locate where the malfunction occurs, switching to the power transistor check mode of inverter in the service mode setting enables not to judge the position detection signal malfunction but to output waveform only during inverter operation.
Page 144: Part 6 Troubleshooting
Si39-306 Part 6 Part 6 Part 6 Part 6 Troubleshooting Troubleshooting Troubleshooting Troubleshooting 1. Troubleshooting by Remote Controller ..........135 1.1 The INSPECTION / TEST Button............135 1.2 Self-diagnosis by Wired Remote Controller .........136 1.3 Self-diagnosis by Wireless Remote Controller ........137 1.4 Operation of the Remote Controller’s Inspection / Test Operation Button ................140 1.5 Remote Controller Service Mode ............141 1.6 Remote Controller Self-Diagnosis Function .........143...
Page 145 Si39-306 2.33 “JC” Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor ..185 2.34 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise.................186 2.35 “L5” Outdoor Unit: Inverter Compressor Abnormal .......187 2.36 “L8” Outdoor Unit: Inverter Current Abnormal........188 2.37 “L9” Outdoor Unit: Inverter Start up Error..........189 2.38 “LC”...
Page 146: Troubleshooting By Remote Controller
Si39-306 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 147: Self-Diagnosis By Wired Remote Controller
Troubleshooting by Remote Controller Si39-306 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 148: Self-Diagnosis By Wireless Remote Controller
Si39-306 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 149 Troubleshooting by Remote Controller Si39-306 The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed. Troubleshooting...
Page 150 Si39-306 Troubleshooting by Remote Controller Troubleshooting...
Page 151: Operation Of The Remote Controller's Inspection / Test Operation Button
Troubleshooting by Remote Controller Si39-306 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 152: Remote Controller Service Mode
Si39-306 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 153 Troubleshooting by Remote Controller Si39-306 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 154: Remote Controller Self-Diagnosis Function
Si39-306 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 155 Troubleshooting by Remote Controller Si39-306 : ON : Blink : OFF 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 (S1L) Fan motor (MF) lock, overload Malfunction of swing flap motor (MA) Malfunction of moving part of electronic expansion...
Page 156 Si39-306 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 Mismatching of Inverter·Fan driver System...
Page 157 Troubleshooting by Remote Controller Si39-306 Malfunction code indication by outdoor unit PCB Contents of malfunction Malfunction To enter the monitor mode, push the MODE button (BS1) when in code “Setting mode 1”. Abnormal discharge pressure HPS activated Abnormal suction pressure Abnormal Pe Compressor lock Detection of INV compressor lock...
Page 158 Si39-306 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 Malfunction code 1st Malfunction code 2nd Malfunction...
Page 159: Troubleshooting By Indication On The Remote Controller
Troubleshooting by Indication on the Remote Controller Si39-306 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 160: A1" Indoor Unit: Pc Board Defect
Si39-306 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 161: A3" Indoor Unit: Malfunction Of Drain Level Control System (S1L)
Troubleshooting by Indication on the Remote Controller Si39-306 “ A3 ” Indoor Unit: Malfunction of Drain Level Control System (S1L) 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 162 Si39-306 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 163: A6" Indoor Unit: Fan Motor (M1F) Lock, Overload
Troubleshooting by Indication on the Remote Controller Si39-306 “ 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 164: A7" Indoor Unit: Malfunction Of Swing Flap Motor (Ma)
Si39-306 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 165 Troubleshooting by Indication on the Remote Controller Si39-306 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 166: A9" Indoor Unit: Malfunction Of Moving Part Of Electronic Expansion Valve (20E)
Si39-306 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 167 Troubleshooting by Indication on the Remote Controller Si39-306 ∗1: Coil check method for the moving part of the electronic expansion valve Discount the electronic expansion valve from the PC board and check the continuity between the connector pins. (Normal) Pin No. 1.
Page 168: Af" Indoor Unit: Drain Level Above Limit
Si39-306 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 169: Aj" Indoor Unit: Malfunction Of Capacity Determination Device
Troubleshooting by Indication on the Remote Controller Si39-306 “ 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 170: C4" Indoor Unit: Malfunction Of Thermistor (R2T)
Si39-306 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 171: 2.10 " C5 " Indoor Unit
Troubleshooting by Indication on the Remote Controller Si39-306 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 172: C9" Indoor Unit: Malfunction Of Thermistor (R1T) For Suction Air
Si39-306 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 173: Cj" Indoor Unit: Malfunction Of Thermostat Sensor In Remote Controller
Troubleshooting by Indication on the Remote Controller Si39-306 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 174: E1" Outdoor Unit: Pc Board Defect
Si39-306 Troubleshooting by Indication on the Remote Controller 2.13 “ E1 ” Outdoor Unit: PC Board Defect Remote Controller Display Applicable REYQ8~48M 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 175: E3" Outdoor Unit: Actuation Of High Pressure Switch
Troubleshooting by Indication on the Remote Controller Si39-306 2.14 “ E3 ” Outdoor Unit: Actuation of High Pressure Switch Remote Controller Display Applicable REYQ8~48M Models Method of Abnormality is detected when the contact of the high pressure protection switch opens. Malfunction Detection Malfunction...
Page 176: E4" Outdoor Unit: Actuation Of Low Pressure Sensor
Si39-306 Troubleshooting by Indication on the Remote Controller 2.15 “ E4 ” Outdoor Unit: Actuation of Low Pressure Sensor Remote Controller Display Applicable REYQ8~48M Models Method of Malfunction Detection Malfunction Error is generated when the low pressure is dropped under specific pressure. Decision Conditions Supposed...
Page 177: Compressor Motor Lock (Inv Compressor)
Troubleshooting by Indication on the Remote Controller Si39-306 2.16 “ E5 ” Compressor Motor Lock (INV Compressor) Remote Controller Display Applicable REYQ8~48M 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.
Page 178: Compressor Motor Overcurrent/Lock (Std Compressor)
Si39-306 Troubleshooting by Indication on the Remote Controller 2.17 “ E6 ” Compressor Motor Overcurrent/Lock (STD Compressor) Remote Controller Display Applicable REYQ8~48M 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 179: Malfunction Of Outdoor Unit Fan Motor
Troubleshooting by Indication on the Remote Controller Si39-306 “ E7 ” 2.18 Malfunction of Outdoor Unit Fan Motor Remote Controller Display Applicable REYQ8~48M 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 180 Si39-306 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 181: Expansion Valve (Y1E, Y2E, Y3E)
Troubleshooting by Indication on the Remote Controller Si39-306 2.19 “ E9 ” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E, Y2E, Y3E) Remote Controller Display Applicable REYQ8~48M Models Method of Check disconnection of connector Check continuity of expansion valve coil Malfunction Detection Malfunction...
Page 182 Si39-306 Troubleshooting by Indication on the Remote Controller ∗1 Coil check method for the moving part of the electronic expansion valve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins. (Normal) Pin No. 1.
Page 183: F3" Outdoor Unit: Abnormal Discharge Pipe Temperature
Troubleshooting by Indication on the Remote Controller Si39-306 2.20 “ F3 ” Outdoor Unit: Abnormal Discharge Pipe Temperature Remote Controller Display Applicable REYQ8~48M Models Method of Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor. Malfunction Detection Malfunction...
Page 184: Refrigerant Overcharged
Si39-306 Troubleshooting by Indication on the Remote Controller 2.21 “ F6 ” Refrigerant Overcharged Remote Controller Display Applicable REYQ8~48M 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 185: Abnormal Outdoor Fan Motor Signal
Troubleshooting by Indication on the Remote Controller Si39-306 2.22 “ H7 ” Abnormal Outdoor Fan Motor Signal Remote Controller Display Applicable REYQ8~48M 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 186: H9" Outdoor Unit: Malfunction Of Thermistor For Outdoor Air (R1T)
Si39-306 Troubleshooting by Indication on the Remote Controller 2.23 “ H9 ” Outdoor Unit: Malfunction of Thermistor for Outdoor Air (R1T) Remote Controller Display Applicable REYQ8~48M Models Method of The abnormal detection is based on current detected by current sensor. Malfunction Detection Malfunction...
Page 187: Current Sensor Malfunction
Troubleshooting by Indication on the Remote Controller Si39-306 “ J2 ” 2.24 Current Sensor Malfunction Remote Controller Display Applicable REYQ8~48M 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 188: J3" Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R31~33T)
Si39-306 Troubleshooting by Indication on the Remote Controller 2.25 “ J3 ” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R31~33T) Remote Controller Display Applicable REYQ8~48M Models Method of Malfunction is detected from the temperature detected by discharge pipe temperature thermistor. Malfunction Detection Malfunction...
Page 189: J4" Malfunction Of Heat Exchanger Gas Pipe Thermistor (R81, 82T)
Troubleshooting by Indication on the Remote Controller Si39-306 2.26 “J4” Malfunction of Heat Exchanger Gas Pipe Thermistor (R81, 82T) Remote Controller Display Applicable REYQ8~48M Models Method of Malfunction is detected according to the temperature detected by heat exchanger gas pipe thermistor.
Page 190: J5" Outdoor Unit: Malfunction Of Thermistor (R2T) For Suction Pipe
Si39-306 Troubleshooting by Indication on the Remote Controller 2.27 “ J5 ” Outdoor Unit: Malfunction of Thermistor (R2T) for Suction Pipe Remote Controller Display Applicable REYQ8~48M Models Method of Malfunction is detected from the temperature detected by the suction pipe temperature thermistor.
Page 191: Unit Heat Exchanger
Troubleshooting by Indication on the Remote Controller Si39-306 2.28 “ J6 ” Outdoor Unit: Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger Remote Controller Display Applicable REYQ8~48M Models Method of Malfunction is detected from the temperature detected by the heat exchanger thermistor. Malfunction Detection Malfunction...
Page 192: Malfunction Of Receiver Outlet Liquid Pipe Thermistor (R6T)
Si39-306 Troubleshooting by Indication on the Remote Controller 2.29 “ J7 ” Malfunction of Receiver Outlet Liquid Pipe Thermistor (R6T) Remote Controller Display Applicable REYQ8~48M Models Method of Malfunction is detected according to the temperature detected by receiver outlet liquid pipe thermistor.
Page 193: Malfunction Of Oil Equalizing Pipe Thermistor (R7T)
Troubleshooting by Indication on the Remote Controller Si39-306 2.30 “ J8 ” Malfunction of Oil Equalizing Pipe Thermistor (R7T) Remote Controller Display Applicable REYQ8~48M Models Method of Malfunction is detected according to the temperature detected by oil equalizing pipe thermistor. Malfunction Detection Malfunction...
Page 194: Malfunction Of Receiver Gas Pipe Thermistor (R5T)
Si39-306 Troubleshooting by Indication on the Remote Controller 2.31 “ J9 ” Malfunction of Receiver Gas Pipe Thermistor (R5T) Remote Controller Display Applicable REYQ8~48M Models Method of Malfunction is detected according to the temperature detected by receiver gas pipe thermistor. Malfunction Detection Malfunction...
Page 195: Ja" Outdoor Unit: Malfunction Of Discharge Pipe Pressure Sensor
Troubleshooting by Indication on the Remote Controller Si39-306 2.32 “ JA ” Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor Remote Controller Display Applicable REYQ8~48M Models Method of Malfunction is detected from the pressure detected by the high pressure sensor. Malfunction Detection Malfunction...
Page 196: Jc" Outdoor Unit: Malfunction Of Suction Pipe Pressure Sensor
Si39-306 Troubleshooting by Indication on the Remote Controller 2.33 “ JC ” Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor Remote Controller Display Applicable REYQ8~48M 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 197: Temperature Rise
Troubleshooting by Indication on the Remote Controller Si39-306 2.34 “ L4 ” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Remote Controller Display Applicable REYQ8~48M Models Method of Fin temperature is detected by the thermistor of the radiation fin. Malfunction Detection Malfunction...
Page 198: L5" Outdoor Unit: Inverter Compressor Abnormal
Si39-306 Troubleshooting by Indication on the Remote Controller 2.35 “ L5 ” Outdoor Unit: Inverter Compressor Abnormal Remote Controller Display Applicable REYQ8~48M 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 199: L8" Outdoor Unit: Inverter Current Abnormal
Troubleshooting by Indication on the Remote Controller Si39-306 2.36 “ L8 ” Outdoor Unit: Inverter Current Abnormal Remote Controller Display Applicable REYQ8~48M 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 200: L9" Outdoor Unit: Inverter Start Up Error
Si39-306 Troubleshooting by Indication on the Remote Controller 2.37 “ L9 ” Outdoor Unit: Inverter Start up Error Remote Controller Display Applicable REYQ8~48M 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 201: 2.38 " Lc " Outdoor Unit
Troubleshooting by Indication on the Remote Controller Si39-306 2.38 “ LC ” Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board Remote Controller Display Applicable REYQ8~48M Models Method of Check the communication state between inverter PC board and control PC board by micro- computer.
Page 202 Si39-306 Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Are the connectors between the main PC board (A1P), Connect transmission wiring and fan drive PC board (A3P) turn on again.
Page 203: 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 204: P4" Outdoor Unit: Malfunction Of Inverter Radiating Fin
Si39-306 Troubleshooting by Indication on the Remote Controller 2.40 “ P4 ” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor Remote Controller Display Applicable REYQ8~48M Models Method of Resistance of radiation fin thermistor is detected when the compressor is not operating. Malfunction Detection Malfunction...
Page 205: 2.41 " Pj " Outdoor Unit
Troubleshooting by Indication on the Remote Controller Si39-306 2.41 “ PJ ” Outdoor Unit: Mismatching of Inverter · Fan Driver P.C. Board Remote Controller Display Applicable REYQ8~48M Models Method of Detect by communication to INVERTER. Malfunction Detection Malfunction Decide that the INVERTER P.C.Board is correct type or not by using communication data. Decision Conditions Supposed...
Page 206: Uo" Low Pressure Drop Due To Refrigerant Shortage Or
Si39-306 Troubleshooting by Indication on the Remote Controller 2.42 “ UO ” Low Pressure Drop due to Refrigerant Shortage or Electronic Expansion Valve Failure Remote Controller Display Applicable REYQ8~48M Models Method of Short of gas malfunction is detected by discharge pipe temperature thermistor. Malfunction Detection Malfunction...
Page 207: Reverse Phase, Open Phase
Troubleshooting by Indication on the Remote Controller Si39-306 2.43 “ U1 ” Reverse Phase, Open Phase Remote Controller Display Applicable REYQ8~48M 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 208: Power Supply Insufficient Or Instantaneous Failure
Si39-306 Troubleshooting by Indication on the Remote Controller 2.44 “ U2 ” Power Supply Insufficient or Instantaneous Failure Remote Controller Display Applicable REYQ8~48M Models Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Detection Malfunction...
Page 209 Troubleshooting by Indication on the Remote Controller Si39-306 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 210: Check Operation Not Executed
Si39-306 Troubleshooting by Indication on the Remote Controller “ U3 ” 2.45 Check Operation not Executed Remote Controller Display Applicable REYQ8~48M 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 211: Malfunction Of Transmission Between Indoor Units
Troubleshooting by Indication on the Remote Controller Si39-306 2.46 “ U4 ” Malfunction of Transmission between Indoor Units Remote Controller Display Applicable All model of indoor unit Models REYQ8~48M Method of Microcomputer checks if transmission between indoor and outdoor units is normal. Malfunction Detection Malfunction...
Page 212 Si39-306 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 213: U5" Malfunction Of Transmission Between Remote
Troubleshooting by Indication on the Remote Controller Si39-306 2.47 “ 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 214: Malfunction Of Transmission Between Outdoor Units
Si39-306 Troubleshooting by Indication on the Remote Controller 2.48 “ 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 215 Troubleshooting by Indication on the Remote Controller Si39-306 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 216: U8" Malfunction Of Transmission Between Master
Si39-306 Troubleshooting by Indication on the Remote Controller 2.49 “ 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 217: Malfunction Of Transmission Between Indoor And Outdoor Units In The Same System
Troubleshooting by Indication on the Remote Controller Si39-306 2.50 “ 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 218 Si39-306 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 219: Ua" Excessive Number Of Indoor Units
Troubleshooting by Indication on the Remote Controller Si39-306 2.51 “ UA ” Excessive Number of Indoor Units Remote Controller Display Applicable All models of indoor unit Models REYQ8~48M 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 220: Uc" Address Duplication Of Centralized Remote Controller
Si39-306 Troubleshooting by Indication on the Remote Controller 2.52 “ UC ” Address Duplication of Centralized 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 221: Malfunction Of Transmission Between Centralized Remote Controller And Indoor Unit
Troubleshooting by Indication on the Remote Controller Si39-306 2.53 “ UE ” Malfunction of Transmission between Centralized 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 222 Si39-306 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 223: Uf" Refrigerant System Not Set, Incompatible Wiring/Piping
Troubleshooting by Indication on the Remote Controller Si39-306 2.54 “ UF ” Refrigerant System not Set, Incompatible Wiring/ Piping Remote Controller Display Applicable All models of indoor units REYQ8~48M 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 224: Uh" Malfunction Of System, Refrigerant System Address Undefined
Si39-306 Troubleshooting by Indication on the Remote Controller 2.55 “ UH ” Malfunction of System, Refrigerant System Address Undefined Remote Controller Display Applicable All models of indoor units REYQ8~48M 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 225: Troubleshooting (Op: Centralized Remote Controller)
Troubleshooting (OP: Centralized Remote Controller) Si39-306 Troubleshooting (OP: Centralized Remote Controller) “ UE ” Malfunction of Transmission between Centralized Remote Controller and Indoor Unit Remote Controller Display Applicable All models of indoor units Models REYQ8~48M Method of Microcomputer checks if transmission between indoor unit and centralized remote controller is normal.
Page 226: Pc Board Defect
Si39-306 Troubleshooting (OP: Centralized Remote Controller) “ M1 ” PC Board Defect Remote Controller Display Applicable Centralized remote controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Defect of centralized remote controller PC board Causes Troubleshooting Replace the centralized remote controller PC board. Troubleshooting...
Page 227: Malfunction Of Transmission Between Optional Controllers For Centralized Control
Troubleshooting (OP: Centralized Remote Controller) Si39-306 “ 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 228: Improper Combination Of Optional Controllerslers For Centralized Controllers
Si39-306 Troubleshooting (OP: Centralized 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 229 Troubleshooting (OP: Centralized Remote Controller) Si39-306 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 230: Mc" Address Duplication, Improper Setting
Si39-306 Troubleshooting (OP: Centralized Remote Controller) “ MC ” Address Duplication, Improper Setting Remote Controller Display Applicable Centralized 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 231: Troubleshooting (Op: Schedule Timer)
Troubleshooting (OP: Schedule Timer) Si39-306 Troubleshooting (OP: Schedule Timer) “ UE ” Malfunction of Transmission between Centralized 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 232 Si39-306 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 233: Pc Board Defect
Troubleshooting (OP: Schedule Timer) Si39-306 “ 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 234: M8" Malfunction Of Transmission Between Optional
Si39-306 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 235: Improper Combination Of Optional Controllerslers For Centralized Controllers
Troubleshooting (OP: Schedule Timer) Si39-306 “ 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 236 Si39-306 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 237: Mc" Address Duplication, Improper Setting
Troubleshooting (OP: Schedule Timer) Si39-306 “ 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 238: Troubleshooting (Op: Unified On/Off Controller)
Si39-306 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 239 Troubleshooting (OP: Unified ON/OFF Controller) Si39-306 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 240: Display "Under Host Computer Integrate Control" Blinks (Repeats Single Blink)
Si39-306 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 Centralized controller, Schedule timer Models Method of Malfunction Detection Malfunction Decision Conditions...
Page 241 Troubleshooting (OP: Unified ON/OFF Controller) Si39-306 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 its address controllers for centralized...
Page 242 Si39-306 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 243: Display "Under Host Computer Integrate Control" Blinks (Repeats Double Blink)
Troubleshooting (OP: Unified ON/OFF Controller) Si39-306 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 Centralized control address (group No.) is not set for indoor unit.
Page 244 Si39-306 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 245 Troubleshooting (OP: Unified ON/OFF Controller) Si39-306 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 246: Part 7 Replacement Procedure For Inv Compressor, Vrv Ii (Reyq8M To 48M)
Si39-306 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 (REYQ8M to 48M) VRV II (REYQ8M to 48M) VRV II (REYQ8M to 48M) VRV II (REYQ8M to 48M) 1.
Page 247: Vrv Ii (Reyq8M-48M)
Replacement Procedure for INV Compressor, VRV II (REYQ8M-48M) Si39-306 Replacement Procedure for INV Compressor, VRV II (REYQ8M-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 248: Part 8 Appendix
Si39-306 Part 8 Part 8 Part 8 Part 8 Appendix Appendix Appendix Appendix 1. Piping Diagrams..................238 1.1 Outdoor Unit ..................238 1.2 Indoor Unit....................240 1.3 BS Unit ....................241 2. Wiring Diagrams for Reference............242 2.1 Outdoor Unit ..................242 2.2 Field Wiring ..................244 2.3 Indoor Unit....................247 2.4 BS Unit ....................258 List of Electrical and Functional Parts ..........259...
Page 249: Piping Diagrams
Piping Diagrams Si39-306 1. Piping Diagrams Outdoor Unit REYQ8MY1B REYQ10MY1B REYQ12MY1B 4D042069A Appendix...
Page 250 Si39-306 Piping Diagrams REYQ14MY1B REYQ16MY1B 4D042070A Appendix...
Page 251: Indoor Unit
Piping Diagrams Si39-306 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 252: Bs Unit
Si39-306 Piping Diagrams BS Unit BSVQ100MV1 BSVQ160MV1 BSVQ250MV1 4D042115 Appendix...
Page 253: Wiring Diagrams For Reference
Wiring Diagrams for Reference Si39-306 2. Wiring Diagrams for Reference Outdoor Unit REYQ8MY1B REYQ10MY1B REYQ12MY1B Appendix...
Page 254 Si39-306 Wiring Diagrams for Reference REYQ14MY1B REYQ16MY1B Appendix...
Page 255: Field Wiring
Wiring Diagrams for Reference Si39-306 Field Wiring REYQ8, 10, 12, 14, 16MY1B Appendix...
Page 256 Si39-306 Wiring Diagrams for Reference REYQ18, 20, 22, 24, 26, 28, 30, 32MY1B Appendix...
Page 257 Wiring Diagrams for Reference Si39-306 REYQ34, 36, 38, 40, 42, 44, 46, 48MY1B Appendix...
Page 258: Indoor Unit
Si39-306 Wiring Diagrams for Reference Indoor Unit FXCQ20M / 25M / 32M / 63MVE Appendix...
Page 259 Wiring Diagrams for Reference Si39-306 FXCQ40M / 50M / 80M/ 125MVE Appendix...
Page 260 Si39-306 Wiring Diagrams for Reference FXZQ20M / 25M / 32M / 40M / 50MVE Appendix...
Page 261 Wiring Diagrams for Reference Si39-306 FXFQ25M / 32M / 40M / 50M / 63M / 80M / 100M / 125MVE Appendix...
Page 262 Si39-306 Wiring Diagrams for Reference FXKQ25M / 32M / 40M / 63MVE Appendix...
Page 263 Wiring Diagrams for Reference Si39-306 FXSQ20M / 25M / 32M / 40M / 50M / 63M / 80M / 100M / 125MVE Appendix...
Page 264 Si39-306 Wiring Diagrams for Reference FXMQ40M / 50M / 63M / 80M / 100M / 125MVE Appendix...
Page 265 Wiring Diagrams for Reference Si39-306 FXMQ200M / 250MVE Appendix...
Page 266 Si39-306 Wiring Diagrams for Reference FXHQ32M / 63M / 100MVE Appendix...
Page 267 Wiring Diagrams for Reference Si39-306 FXAQ20M / 25M / 32MVE / 40M / 50M / 63MVE Appendix...
Page 268 Si39-306 Wiring Diagrams for Reference FXLQ20M / 25M / 32M / 40M / 50M / 63MVE FXNQ20M / 25M / 32M / 40M / 50M / 63MVE Appendix...
Page 269: Bs Unit
Wiring Diagrams for Reference Si39-306 BS Unit BSVQ100MV1 BSVQ160MV1 BSVQ250MV1 Appendix...
Page 270: List Of Electrical And Functional Parts
Si39-306 List of Electrical and Functional Parts List of Electrical and Functional Parts Outdoor Unit 3.1.1 REYQ8~16MY1B Model Item Name Symbol REYQ8MY1B REYQ10MY1B REYQ12MY1B REYQ14MY1B REYQ16MY1B Type JT100FCVDKTR JT100FCVDKTR JT100FCVDKTR JT100FCVDKTR JT100FCVDKTR Inverter Output 1.2kW 2.7kW 4.2kW 2.0kW 3.0kW Type JT170FCKYE JT170FCKYE JT170FCKYE...
Page 271: Indoor Side
List of Electrical and Functional Parts Si39-306 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 272 Si39-306 List of Electrical and Functional Parts Model Parts Name Symbol Remark FXZQ FXZQ FXZQ FXZQ FXZQ 20MVE 25MVE 32MVE 40MVE 50MVE Wired Remote BRC1A61 Controller Remote Option Controller Wireless Remote BRC7E530W Controller AC 220~240V 50Hz Fan Motor 1φ55W 4P Thermal Fuse 135°C Capacitor, fan motor 4.0µ...
Page 273 List of Electrical and Functional Parts Si39-306 Model Parts Name Symbol Remark FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ 20MVE 25MVE 32MVE 40MVE 50MVE 63MVE 80MVE 100MVE 125MVE Wired Remote BRC1A62 Controller Remote Option Controller Wireless Remote BRC4C62 Controller AC 220~240V 50Hz 1φ125...
Page 274 Si39-306 List of Electrical and Functional Parts Model Parts Name Symbol Remark FXHQ FXHQ FXHQ 32MVE 63MVE 100MVE Wired Remote BRC1A61 Option Remote Controller Controller Wireless Controller BRC7E63W AC 220~240V/220V 50Hz/60Hz Fan Motor 1φ63W 1φ130W Thermal protector 130°C : OFF 80°C : ON Motors 9.0µF-400V...
Page 275 List of Electrical and Functional Parts Si39-306 Model Parts Name Symbol Remark FXLQ FXLQ FXLQ FXLQ FXLQ FXLQ 20MVE 25MVE 32MVE 40MVE 50MVE 63MVE Wired Remote BRC1A62 Controller Remote Option Controller Wireless Remote BRC4C62 Controller AC 220~240V 50Hz Fan Motor 1φ15W 1φ25W 1φ35W...
Page 276: Option List
Si39-306 Option List 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 Wireless BRC7C62 BRC7E530W BRC7E61W BRC4C61 BRC4C62 BRC7E63W BRC7E618 BRC4C62 Remote controller Wired BRC1A61 BRC1A62 BRC1A61 BRC1A62 Set back time clock...
Page 277 Option List Si39-306 Building management system Part name Model No. Function Without Air-Conditioning management system that can be controlled by a DCS601B51 compact all-in-one unit. PPD: Power Proportional Distribution function intelligent Touch Controller New Functions: • Auto cool/heat change-over •Temperature limitation With DCS601B51 •...
Page 278: Option Lists (Outdoor Unit)
Si39-306 Option List Option Lists (Outdoor Unit) REYQ8 ~ 16MY1B REYQ12MY1B REYQ8MY1B Optional accessories REYQ14MY1B REYQ10MY1B REYQ16MY1B KHRP25M33H, KHRP25M72H Refnet header KHRP25M33H (Max. 8 branch) (Max. 8 branch) (Max. 8 branch) Refnet joint KHRP25M22T, KHRP25M33T KHRP25M22T, KHRP25M33T, KHRP25M72T Kit of air discharge duct KPF26B280 KPF26B450 Central drain pan kit...
Page 279: Piping Installation Point
Piping Installation Point Si39-306 Piping Installation Point Piping Installation Point 5m or less than 5m Maximum length from a connection Connection Connection kit. 10m or less from first branch. Kit A Kit B (Equivalent Piping Length 13m) Since there is a possibility that oil may be collected on a stop machine side, install piping between outdoor units to go to level or go up to an outdoor unit, and to make a slope.
Page 280: The Example Of A Wrong Pattern
Si39-306 Piping Installation Point The Example of a Wrong Pattern Wrong × Oil is collected to the outdoor unit at the time of a stop, because of bottom omission of piping. (V3039) Wrong × Oil is collected to the low level outdoor unit at the time of a stop, because of downward slope of piping.
Page 281: Refnet Pipe System
REFNET Pipe System Si39-306 6. REFNET Pipe System Layout Example Heat Recovery System Use of the particular branch fitting appropriate to each individual unit type not only permits the pipes to be laid with ease but also increases the reliability of the system as a whole. Type of Sample systems fitting...
Page 282: Max. Refrigerant Piping Length
Si39-306 REFNET Pipe System Max. Refrigerant Piping Length Outdoor Unit 2 Outdoor Unit 1 Outdoor Unit 3 First Outdoor Branch First Branch BS Units Indoor Units BS Units Indoor Units BS Units Indoor Units (V1924) Max. Refrigerant Piping Length (Actual Piping Length) First outdoor Branch ~ Outdoor units First Branch ~ Indoor Units Outdoor Units ~ Indoor Units...
Page 283 REFNET Pipe System Si39-306 Appendix...
Page 284: Example Of Connection (R410A Type) Reyq8-48M (Heat Recovery)
Si39-306 ([DPSOH RI &RQQHFWLRQ 5$ 7\SH 5(<40 +HDW 5HFRYHU\ Appendix...
Page 285 Si39-306 Appendix...
Page 286: Thermistor Resistance / Temperature Characteristics
Si39-306 Thermistor Resistance / Temperature Characteristics Thermistor Resistance / Temperature Characteristics Indoor unit For air suction For liquid pipe For gas pipe Outdoor unit For outdoor air For suction pipe For coil For sub cooling heat exchanger For receiver outlet For oil equalizing For main heat exchanger gas pipe R81T Outdoor unit For fin R1T...
Page 287 Thermistor Resistance / Temperature Characteristics Si39-306 Outdoor Unit Thermistors for Discharge Pipe (R31, 32, 33T) (kΩ)) T°C T°C T°C 640.44 624.65 72.32 70.96 13.35 13.15 609.31 594.43 69.64 68.34 12.95 12.76 579.96 565.78 67.06 65.82 12.57 12.38 552.00 538.63 64.60 63.41 12.20 12.01...
Page 288: Pressure Sensor
Si39-306 Pressure Sensor Pressure Sensor = 1.38V-0.69 : Detected Pressure [High Side] MPa = 0.57V-0.28 : Detected Pressure [Low Side] MPa : High pressure (MPa) : Output Voltage [High Side] V Detected Pressure : Low pressure (MPa) : Output Voltage [Low Side] V V : Voltage (V) High Pressure (P Low Pressure (P...
Page 289: Method Of Replacing The Inverter's Power Transistors And Diode Modules
Method of Replacing The Inverter’s Power Transistors and Diode Modules Si39-306 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 290 Si39-306 Method of Replacing The Inverter’s Power Transistors and Diode Modules Power Transistor IGBT (On Inverter PC Board) (Decision) If other than given above, the power unit is defective and must be replaced. If using a digital tester, ∞ and continuity may be reversed. Notes: Diode Module (Decision)
Page 291 Method of Replacing The Inverter’s Power Transistors and Diode Modules Si39-306 Appendix...
Page 292: Part 9 Precautions For New Refrigerant (R410)
Si39-306 Part 9 Precautions for New Precautions for New Precautions for New Precautions for New Refrigerant (R410) Refrigerant (R410) Refrigerant (R410) Refrigerant (R410) Precautions for New Refrigerant (R410) ..........282 1.1 Outline ....................282 Refrigerant Cylinders................284 Service Tools..................285 General Information...
Page 293: Precautions For New Refrigerant (R410)
Precautions for New Refrigerant (R410) Si39-306 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 294 Si39-306 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 295: Refrigerant Cylinders
Precautions for New Refrigerant (R410) Si39-306 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 296: Service Tools
Si39-306 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 297 Precautions for New Refrigerant (R410) Si39-306 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 298 Si39-306 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 299 Precautions for New Refrigerant (R410) Si39-306 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 300 Si39-306 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 301 Precautions for New Refrigerant (R410) Si39-306 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 302: Index
Si39-306 Index Index Index Index Symbols A7 ................ 153 A9 ................ 155 “E7”Malfunction of Outdoor Unit Fan Motor ..168 Abnormal Discharge Pipe Temperature ....172 “F6”Refrigerant Overcharged .......173 About Refrigerant R410A ........282 “H7”Abnormal Outdoor Fan Motor Signal ....174 Actuation of High Pressure Switch ...... 164 “H9”...
Page 303 Si39-306 Electronic Expansion Valve PI Control ....66 Low Pressure Protection Control ......81 Emergency Operation ..........86 Emergency operation (STD compressor is inhibited to operate.) ........118 M1 ............... 215, 222 Error of External Protection Device ......148 M8 ............... 216, 223 External Appearance ..........3 MA ...............
Page 304 Si39-306 Precautions for New Refrigerant (R410) ....282 Ultra-Long-Life Filter Sign Setting ....... 106 Pressure Equalization Prior to Startup ....79 Pressure Equalizing Control ........74 Pressure Sensor ..........277 Protection Control ..........80 Pump-down Residual Operation ......75 Refrigerant Circuit ..........42 BSVQ100, 160, 250M ........46 REYQ14, 16M ..........44 REYQ8, 10, 12M ..........42 Refrigerant Cylinders ...........284...
Page 305 Si39-306 Index...
Page 306: Drawings & Flow Charts
Si39-306 Drawings & Flow Charts Drawings & Flow Charts Drawings & Flow Charts Drawings & Flow Charts Symbols Group No. Setting Example ......110 Charge hose for R410A ........289 “E7”Malfunction of Outdoor Unit Fan Motor ..168 Charge mouthpiece ..........290 “F6”Refrigerant Overcharged .......173 Charging cylinder ..........
Page 307 Si39-306 BS Unit ............241 Indoor Unit ............ 240 Individual setting ..........142 Outdoor Unit ..........238 Indoor Unit Piping Installation Point ........268 Malfunction of Moving Part of Electronic Pressure Sensor ..........277 Expansion Valve (20E) .....155 Procedure and Outline .......... 96 Inverter Compressor Abnormal ......187 Inverter Current Abnormal ........188 Inverter Over-Ripple Protection ......192...
Page 308 Si39-306 Weigher for refrigerant charge ......290 Wired Remote Controller ........101 Wireless Remote Controller - Indoor Unit BRC7C type ...........102 Wiring Diagrams for Reference ......242 BS Unit ............258 Field Wiring ............244 Indoor Unit .............247 Outdoor Unit ..........242 Drawings...
Page 309 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 12/2003 COS...

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