Daikin 3MKS50DVM Service Manual Download Page 1

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Si12 - 619A

[Applied Models]

Inverter Multi : Cooling Only

Inverter Multi : Heat Pump

D-Series / E-Series

Summary of Contents for 3MKS50DVM

Page 1: ...Si12 619A Applied Models Inverter Multi Cooling Only Inverter Multi Heat Pump D Series E Series ...

Page 2: ...MA FDKS35EAVMB FTKS25EVMA CDKS25CVMA FTKS35EVMA CDKS35CVMA FTKS50FVM CDKS50CVMA FTKS60FVM CDKS60CVMA FTKS71FVM CDKS25DVMT FTKS50FVMA CDKS35DVMT FTKS60FVMA CDKS50DVMT FTKS71FVMA CDKS60DVMT FTKS20DVMT CDKS25EAVMA FTKS25DVMT CDKS35EAVMA FTKS35DVMT CDKS25EAVMT FTKS50DVMT CDKS35EAVMT FTKS60DVMT FTKS71DVMT FTKS50FVLT FTKS60FVLT FTKS71FVLT Outdoor Unit 3MKS58EVMA 3MKS90EVLT 3MKS50DVM 3MKS75EVMA 4MKS100EV...

Page 3: ...XS60CVMA FLXS60BVMA FTXS60FVMA CDXS25DVMT FVXS35BVMA FTXS71FVMA CDXS35DVMT FVXS50BVMA FTXS20DVMT CDXS50DVMT FFQ25B8V1B FTXS25DVMT CDXS60DVMT FFQ35B8V1B FTXS35DVMT CDXS25EAVMA FFQ50B8V1B FTXS50DVMT CDXS35EAVMA FFQ60B8V1B FTXS60DVMT CDXS25EAVMT FTXS71DVMT CDXS35EAVMT FTXS50FVLT FTXS60FVLT FTXS71FVLT Outdoor Unit 3MXS52EVMA 3MXS90EVLT 3MXS68EVMA 4MXS100EVLT 4MXS80EVMA ...

Page 4: ...00 64 1 6 Outdoor Units E Series 50 58 Class 80 100 Class 67 1 7 Outdoor Units E Series 68 75 Class 70 1 8 Outdoor Units D Series 73 Part 4 Function and Control 77 1 Main Functions 78 1 1 Frequency Principle 78 1 2 Power Airflow Dual Flaps Wide Angle Louvers and Auto Swing 80 1 3 Fan Speed Control for Indoor Units 81 1 4 Programme Dry Function 82 1 5 Automatic Operation 83 1 6 Thermostat Control 8...

Page 5: ...unction 205 4 Code Indication on the Remote Controller 208 4 1 Error Codes and Description of Fault 208 5 Troubleshooting 209 5 1 Indoor Units 209 5 2 Outdoor Units 210 5 3 Indoor Unit PCB Abnormality 211 5 4 Freeze up Protection Control or High Pressure Control 212 5 5 Fan Motor or Related Abnormality 214 5 6 Thermistor or Related Abnormality Indoor Unit 217 5 7 Shutter Drive Motor Shutter Limit ...

Page 6: ...7 Removal of the Distributor 299 1 8 Removal of the Four Way Valve 300 1 9 Removal of the Compressor 301 2 Outdoor Unit E Series 68 71 75 Class D Series 303 2 1 Removal of the Outer Panels 303 2 2 Removal of the Electrical BOX 304 2 3 Removal of the PCB 308 2 4 Removal of the Fan Motor 311 2 5 Removal of the Sound Blanket 312 2 6 Removal of the Four Way Valve Coil Solenoid Valve Coil Electronic Ex...

Page 7: ...19A vi Table of Contents Part 9 Appendix 359 1 Piping Diagrams 360 1 1 Indoor Units 360 1 2 Outdoor Units 364 2 Wiring Diagrams 370 2 1 Indoor Units 370 2 2 Outdoor Units 376 Index i Drawings Flow Charts vii ...

Page 8: ...wer cable plug from the plug socket before disassembling the equipment for repair Working on the equipment that is connected to the power supply may cause an electrical shook If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits do not touch any electrically charged sections of the equipment If the refrigerant gas is discharged during the repair work ...

Page 9: ...ctrical shock Do not clean the air conditioner by splashing water Washing the unit with water may cause an electrical shock Be sure to provide the grounding when repairing the equipment in a humid or wet place to avoid electrical shocks Be sure to turn off the power switch and unplug the power cable when cleaning the equipment The internal fan rotates at a high speed and cause injury Be sure to co...

Page 10: ...eat generation or fire When wiring between the indoor and outdoor units make sure that the terminal cover does not lift off or dismount because of the cable If the cover is not mounted properly the terminal connection section may cause an electrical shock excessive heat generation or fire Do not damage or modify the power cable Damaged or modified power cable may cause an electrical shock or fire ...

Page 11: ...ent children from swallowing it If a child swallows the coin battery see a doctor immediately Warning Caution Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site to prevent electrical shocks Do not install the equipment in a place where there is a possibility of combustible gas leaks If the combustible gas leaks and remains around the u...

Page 12: ...e to install the packing and seal on the installation frame properly If the packing and seal are not installed properly water may enter the room and wet the furniture and floor For unitary type only Caution Icon Type of Information Description Note Note A note provides information that is not indispensable but may nevertheless be valuable to the reader such as tips and tricks Caution Caution A cau...

Page 13: ...Introduction Si12 619A xii ...

Page 14: ...Si12 619A List of Functions 1 Part 1 List of Functions 1 List of Functions 2 1 1 Cooling Only 2 1 2 Heat Pump 10 ...

Page 15: ...e Worry Free Reliability Durability Auto Restart after Power Failure 3 Step Airflow H P Only Self Diagnosis Digital LED Display Comfort Control Auto Fan Speed Wiring Error Check Indoor Unit Quiet Operation Anticorrosion Treatment of Outdoor Heat Exchanger Night Quiet Mode Automatic Outdoor Unit Quiet Operation Manual Flexibility Multi Split Split Type Compatible Indoor Unit Intelligent Eye Flexibl...

Page 16: ...ilure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display 3 D Airflow Wiring Error Check Comfort Airflow Mode Anticorrosion Treatment of Outdoor Heat Exchanger 3 Step Airflow H P Only Flexibility Multi Split Split Type Compatible Indoor Unit Comfort Control Auto Fan Speed Flexible Voltage Correspondence Indoor Unit Quiet Operation High Ceiling Application Night Quiet Mode Autom...

Page 17: ...zontal Auto Swing Right and Left Self Diagnosis Digital LED Display 3 D Airflow Wiring Error Check Comfort Airflow Mode Anticorrosion Treatment of Outdoor Heat Exchanger 3 Step Airflow H P Only Flexibility Multi Split Split Type Compatible Indoor Unit Comfort Control Auto Fan Speed Flexible Voltage Correspondence Indoor Unit Quiet Operation High Ceiling Application Night Quiet Mode Automatic Charg...

Page 18: ...uto Restart after Power Failure Comfort Airflow Mode Self Diagnosis Digital LED Display 3 Step Airflow H P Only Wiring Error Check Comfort Control Auto Fan Speed Anticorrosion Treatment of Outdoor Heat Exchanger Indoor Unit Quiet Operation Night Quiet Mode Automatic Flexibility Multi Split Split Type Compatible Indoor Unit Outdoor Unit Quiet Operation Manual Flexible Voltage Correspondence Intelli...

Page 19: ...ee Reliability Durability Auto Restart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display Comfort Airflow Mode Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort Control Auto Fan Speed Flexibility Multi Split Split Type Compatible Indoor Unit Indoor Unit Quiet Operation Flexible Voltage Correspondence Night Quiet Mode Automatic High...

Page 20: ...Worry Free Reliability Durability Auto Restart after Power Failure Comfort Airflow Mode Self Diagnosis Digital LED Display 3 Step Airflow H P Only Wiring Error Check Comfort Control Auto Fan Speed Anticorrosion Treatment of Outdoor Heat Exchanger Indoor Unit Quiet Operation Flexibility Multi Split Split Type Compatible Indoor Unit Night Quiet Mode Automatic Flexible Voltage Correspondence Outdoor ...

Page 21: ...flow Worry Free Reliability Durability Auto Restart after Power Failure Comfort Airflow Mode Self Diagnosis Digital LED Display 3 Step Airflow H P Only Wiring Error Check Comfort Control Auto Fan Speed Anticorrosion Treatment of Outdoor Heat Exchanger Indoor Unit Quiet Operation Night Quiet Mode Automatic Flexibility Multi Split Split Type Compatible Indoor Unit Outdoor Unit Quiet Operation Manual...

Page 22: ...uto Restart after Power Failure Comfort Airflow Mode Self Diagnosis Digital LED Display 3 Step Airflow H P Only Wiring Error Check Comfort Control Auto Fan Speed Anticorrosion Treatment of Outdoor Heat Exchanger Indoor Unit Quiet Operation Night Quiet Mode Automatic Flexibility Multi Split Split Type Compatible Indoor Unit Outdoor Unit Quiet Operation Manual Intelligent Eye Flexible Voltage Corres...

Page 23: ...irflow Worry Free Reliability Durability Auto Restart after Power Failure Comfort Airflow Mode Self Diagnosis Digital LED Display 3 Step Airflow H P Only Wiring Error Check Comfort Control Auto Fan Speed Anticorrosion Treatment of Outdoor Heat Exchanger Indoor Unit Quiet Operation Flexibility Multi Split Split Type Compatible Indoor Unit Night Quiet Mode Automatic Flexible Voltage Correspondence O...

Page 24: ...ability Auto Restart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display Comfort Airflow Mode Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort Control Auto Fan Speed Flexibility Multi Split Split Type Compatible Indoor Unit Indoor Unit Quiet Operation Flexible Voltage Correspondence Night Quiet Mode Automatic High Ceiling Applicati...

Page 25: ...to Restart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display Comfort Airflow Mode Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort Control Auto Fan Speed Flexibility Multi Split Split Type Compatible Indoor Unit Indoor Unit Quiet Operation Flexible Voltage Correspondence Night Quiet Mode Automatic High Ceiling Application Outdoor...

Page 26: ... Durability Auto Restart after Power Failure Comfort Airflow Mode Self Diagnosis Digital LED Display 3 Step Airflow H P Only Wiring Error Check Comfort Control Auto Fan Speed Anticorrosion Treatment of Outdoor Heat Exchanger Indoor Unit Quiet Operation Flexibility Multi Split Split Type Compatible Indoor Unit Night Quiet Mode Automatic Flexible Voltage Correspondence Outdoor Unit Quiet Operation M...

Page 27: ...ee Reliability Durability Auto Restart after Power Failure Comfort Airflow Mode Self Diagnosis Digital LED Display 3 Step Airflow H P Only Wiring Error Check Comfort Control Auto Fan Speed Anticorrosion Treatment of Outdoor Heat Exchanger Indoor Unit Quiet Operation Flexibility Multi Split Split Type Compatible Indoor Unit Night Quiet Mode Automatic Flexible Voltage Correspondence Outdoor Unit Qui...

Page 28: ...low Worry Free Reliability Durability Auto Restart after Power Failure Comfort Airflow Mode Self Diagnosis Digital LED Display 3 Step Airflow H P Only Wiring Error Check Comfort Control Auto Fan Speed Anticorrosion Treatment of Outdoor Heat Exchanger Indoor Unit Quiet Operation Flexibility Multi Split Split Type Compatible Indoor Unit Night Quiet Mode Automatic Flexible Voltage Correspondence Outd...

Page 29: ...estart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display Comfort Airflow Mode Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort Control Auto Fan Speed Flexibility Multi Split Split Type Compatible Indoor Unit Indoor Unit Quiet Operation Flexible Voltage Correspondence Night Quiet Mode Automatic High Ceiling Application Outdoor Uni...

Page 30: ...Si12 619A Specifications 17 Part 2 Specifications 1 Specifications 18 1 1 Indoor Units Cooling Only 18 1 2 Outdoor Units Cooling Only 32 1 3 Indoor Units Heat Pump 38 1 4 Outdoor Units Heat Pump 48 ...

Page 31: ...ing Connection Liquid mm φ 6 4 φ 6 4 Gas mm φ 9 5 φ 9 5 Drain mm φ18 0 φ18 0 Drawing No 3D049321 3D049322 Model FTKS50BVMB FTKS60BVMB Rated Capacity 5 0kW Class 6 0kW Class Front Panel Color White White Air Flow Rates m min cfm H 11 4 402 16 2 572 M 9 7 342 13 6 480 L 8 0 282 11 4 402 SL 7 1 251 10 2 360 Fan Type Cross Flow Fan Cross Flow Fan Motor Output W 40 43 Speed Steps 5 Steps Quiet Auto 5 S...

Page 32: ... Front Panel Color White White Air Flow Rates m min cfm H 8 7 307 8 7 307 M 6 7 237 6 7 237 L 4 7 166 4 7 166 SL 3 9 138 3 9 138 Fan Type Cross Flow Fan Cross Flow Fan Motor Output W 40 40 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Direction Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Ru...

Page 33: ...50FVM FTKS60FVM Rated Capacity 5 0kW Class 6 0kW Class Front Panel Color White White Air Flow Rates m min cfm H 14 7 519 16 2 572 M 12 6 445 13 9 491 L 10 2 360 11 5 406 SL 9 2 325 10 0 353 Fan Type Cross Flow Fan Cross Flow Fan Motor Output W 43 43 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Direction Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Remov...

Page 34: ...olor White White Air Flow Rates m min cfm H 14 7 519 16 2 572 M 12 6 445 13 9 491 L 10 2 360 11 5 406 SL 9 2 325 10 0 353 Fan Type Cross Flow Fan Cross Flow Fan Motor Output W 43 43 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Direction Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running C...

Page 35: ...g No 3D054878A Model FTKS20DVMT FTKS25DVMT Capacity 2 0kW Class 2 5kW Class Front Panel Color White White Air Flow Rates m min cfm H 8 7 307 8 7 307 M 6 7 237 6 7 237 L 4 7 166 4 7 166 SL 3 9 138 3 9 138 Fan Type Cross Flow Fan Cross Flow Fan Motor Output W 40 40 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Direction Control Right Left Horizontal Downward Right Left Horizontal Downward Ai...

Page 36: ... Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current A 0 19 0 19 Power Consumption W 40 40 Power Factor 95 7 95 7 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 283 800 195 290 795 238 Packaged Dimensions H W D mm 265 855 340 280 840 338 Weight kg 9 9 Gross Weight kg 12 13 Operation Sound H L SL dBA 39 26 23 44 40 35 32 He...

Page 37: ...tion Liquid mm φ 6 4 φ 6 4 Gas mm φ12 7 φ15 9 Drain mm φ18 0 φ18 0 Drawing No 3D049987 3D049988 Model FTKS50FVLT FTKS60FVLT Capacity 5 0kW Class 6 0kW Class Front Panel Color White White Air Flow Rates m min cfm H 14 7 519 16 2 572 M 12 4 438 13 6 480 L 10 3 364 11 4 403 SL 9 5 335 10 2 360 Fan Type Cross Flow Fan Cross Flow Fan Motor Output W 43 43 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Aut...

Page 38: ...ntal Downward Air Filter Removable Washable Mildew Proof Running Current A 0 21 Power Consumption W 45 Power Factor 97 4 Temperature Control Microcomputer Control Dimensions H W D mm 290 1 050 238 Packaged Dimensions H W D mm 337 1 147 366 Weight kg 12 Gross Weight kg 17 Operation Sound H M L SL dBA 46 42 37 34 Heat Insulation Both Liquid and Gas Pipes Piping Connection Liquid mm φ 6 4 Gas mm φ15 ...

Page 39: ...tic Pressure Pa 40 40 Moisture Removal L h 1 2 1 9 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm φ 6 4 φ 6 4 Gas mm φ 9 5 φ 9 5 Drain mm VP20 O D φ26 I D φ20 VP20 O D φ26 I D φ20 Drawing No 3D048947C 3D048948C Model FDKS50CVMB FDKS60CVMB Rated Capacity 5 0kW Class 6 0kW Class Front Panel Color Air Flow Rates m min cfm H 12 0 424 16 0 565 M 11 0 388...

Page 40: ... φ 6 4 Gas mm φ 9 5 φ 9 5 Drain mm VP20 O D φ 26 I D φ 20 VP20 O D φ 26 I D φ 20 Drawing No 3D051882A 3D051884A Model CDKS25CVMA CDKS35CVMA Rated Capacity 2 5kW Class 3 5kW Class Front Panel Color Air Flow Rates m min cfm H 9 5 335 10 0 353 M 8 8 311 9 3 328 L 8 0 282 8 5 300 SL 6 7 237 7 0 247 Fan Type Sirocco Fan Sirocco Fan Motor Output W 62 62 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto ...

Page 41: ...5 33 31 38 36 34 32 Moisture Removal L h 2 9 3 9 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm φ 6 4 φ 6 4 Gas mm φ12 7 φ12 7 Drain mm VP20 O D φ 26 I D φ 20 VP20 O D φ 26 I D φ 20 Drawing No 3D049725 3D049726 Model CDKS25DVMT CDKS35DVMT Capacity 2 5kW Class 3 5kW Class Front Panel Color Air Flow Rates m min cfm H 9 5 335 10 0 353 M 8 8 311 9 3 328...

Page 42: ... O D φ 26 I D φ 20 VP20 O D φ 26 I D φ 20 Drawing No 3D049721 3D049722 Model CDKS25EAVMA CDKS35EAVMA Rated Capacity 2 5kW Class 3 5kW Class Front Panel Color Air Flow Rates m min cfm H 8 7 307 8 7 307 M 8 0 282 8 0 282 L 7 3 258 7 3 258 SL 6 2 219 6 2 219 Fan Type Sirocco Fan Sirocco Fan Motor Output W 62 62 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Filter Removable Washable Mildew Pro...

Page 43: ...co Fan Sirocco Fan Motor Output W 62 62 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Running Current Rated A 0 52 0 52 Power Consumption Rated W 72 72 Power Factor 62 9 62 9 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 200 700 620 200 700 620 Packaged Dimensions H W D mm 274 906 751 274 906 751 Weight kg 21 21 Gross Weight kg 29 29 Operation Sound H M L ...

Page 44: ... Connection Liquid mm φ 6 4 φ 6 4 Gas mm φ 9 5 φ 9 5 Drain mm VP20 O D φ 26 I D φ 20 VP20 O D φ 26 I D φ 20 Drawing No 3D040444A 3D040442A Model FFQ50B8V1B FFQ60B8V1B Rated Capacity 5 0kW Class 6 0kW Class Decoration Panel Color White White Dimensions H W D 55 700 700 55 700 700 Air Flow Rates m min cfm H 12 0 424 15 5 530 M L 8 0 283 10 0 353 SL Fan Type Turbo Fan Turbo Fan Motor Output W 55 55 S...

Page 45: ...mensions H W D mm 735 936 300 735 936 300 Packaged Dimensions H W D mm 792 992 390 792 992 390 Weight kg 49 58 Gross Weight kg 56 64 Operation Sound dBA 46 48 Sound Power dBA 59 61 Piping Connection Liquid mm φ 6 4 3 φ 6 4 3 Gas mm φ 12 7 3 φ 12 7 2 φ 15 9 1 Drain mm φ 18 0 φ 18 0 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes No of Wiring Connection 3 for Power Supply 4 for I...

Page 46: ...ion W H 86 L 55 Starting Current A 11 2 Dimensions H W D mm 770 900 320 Packaged Dimensions H W D mm 900 925 390 Weight kg 69 Gross Weight kg 79 Operation Sound dBA 48 Sound Power dBA 61 Piping Connection Liquid mm φ 6 4 4 Gas mm φ 9 5 1 φ 12 7 1 φ 15 9 2 Drain mm φ 25 0 Heat Insulation Both Liquid and Gas Pipes No of Wiring Connection 3 for Power Supply 4 for Interunit Wiring Max Interunit Piping...

Page 47: ... 0 Dimensions H W D mm 770 900 320 770 900 320 Packaged Dimensions H W D mm 900 925 390 900 925 390 Weight kg 69 69 Gross Weight kg 78 79 Operation Sound dBA 50 50 Piping Connection Liquid mm φ 6 4 3 φ 6 4 4 Gas mm φ 9 5 1 φ 12 7 1 φ 15 9 1 φ 9 5 1 φ 12 7 1 φ 15 9 2 Drain mm φ 25 0 φ 25 0 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes No of Wiring Connection 3 for Power Supply...

Page 48: ...6 300 735 936 300 Packaged Dimensions H W D mm 784 992 390 784 992 390 Weight kg 55 58 Gross Weight kg 60 64 Operation Sound dBA 46 48 Sound Power dBA 59 61 Piping Connection Liquid mm φ 6 4 3 φ 6 4 4 Gas mm φ 9 5 3 φ 9 5 2 φ12 7 1 φ15 9 1 Drain mm φ18 0 φ18 0 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes No of Wiring Connection 3 for Power Supply 4 for Interunit Wiring 3 for...

Page 49: ...735 936 300 Packaged Dimensions H W D mm 792 992 390 792 992 390 Weight kg 49 58 Gross Weight kg 56 64 Operation Sound dBA 46 48 Sound Power dBA 59 61 Piping Connection Liquid mm φ 6 4 3 φ 6 4 3 Gas mm φ 9 5 3 φ12 7 2 φ15 9 1 Drain mm φ18 0 φ18 0 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes No of Wiring Connection 3 for Power Supply 4 for Interunit Wiring 3 for Power Supply ...

Page 50: ...86 L 55 Starting Current A 10 2 Dimensions H W D mm 770 900 320 Packaged Dimensions H W D mm 900 925 390 Weight kg 69 Gross Weight kg 79 Operation Sound dBA 48 Sound Power dBA 61 Piping Connection Liquid mm φ 6 4 4 Gas mm φ 9 5 1 φ12 7 1 φ15 9 2 Drain mm φ25 Heat Insulation Both Liquid and Gas Pipes No of Wiring Connection 3 for Power Supply 4 for Interunit Wiring Max Interunit Piping Length m 70 ...

Page 51: ...as Pipes Piping Connection Liquid mm φ 6 4 φ 6 4 Gas mm φ 9 5 φ 9 5 Drain mm φ18 0 φ18 0 Drawing No 3D049290 3D054406A Model FTXS35EVMA FTXS50FVMA Cooling Heating Cooling Heating Rated Capacity 3 5kW Class 5 0kW Class Front Panel Color White White Air Flow Rates m min cfm H 8 9 314 9 7 342 14 7 519 16 2 572 M 6 9 242 7 9 277 12 6 445 13 8 487 L 4 8 169 6 0 212 10 2 360 11 5 406 SL 4 0 141 5 2 184 ...

Page 52: ... 32 46 42 37 34 46 42 37 34 Sound Power H dBA 61 60 62 62 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm φ 6 4 φ 6 4 Gas mm φ12 7 φ15 9 Drain mm φ18 0 φ18 0 Drawing No 3D054880 3D054881A Model FTXS20DVMT FTXS25DVMT Cooling Heating Cooling Heating Capacity 2 0kW Class 2 5kW Class Front Panel Color White White Air Flow Rates m min cfm H 8 7 307 9 4 33...

Page 53: ...φ 6 4 φ 6 4 Gas mm φ 9 5 φ12 7 Drain mm φ18 0 φ18 0 Drawing No 3D049893A 3D049983 Model FTXS60DVMT FTXS71DVMT Cooling Heating Cooling Heating Capacity 6 0kW Class 7 1kW Class Front Panel Color White White Air Flow Rates m min cfm H 16 2 572 17 4 614 16 7 590 18 5 653 M 13 6 480 15 1 533 14 2 501 15 1 533 L 11 4 402 12 7 448 11 6 409 13 5 477 SL 10 2 360 11 4 402 10 6 374 12 1 427 Fan Type Cross Fl...

Page 54: ...g 12 12 Gross Weight kg 17 17 Operation Sound H M L SL dBA 43 39 34 31 42 38 33 30 45 41 36 33 44 40 35 32 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm φ 6 4 φ 6 4 Gas mm φ12 7 φ12 7 Drain mm φ18 0 φ18 0 Drawing No 3D056231 3D056232 Model FTXS71FVLT Cooling Heating Capacity 7 1kW Class Front Panel Color White Air Flow Rates m min cfm H 17 4 614 19...

Page 55: ...ure Pa 40 40 Moisture Removal L h 1 2 1 9 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm φ 6 4 φ 6 4 Gas mm φ 9 5 φ 9 5 Drain mm VP20 O D φ 26 I D φ 20 VP20 O D φ 26 I D φ 20 Drawing No 3D055393B 3D055394B Model FDXS50CVMA FDXS60CVMA Cooling Heating Cooling Heating Rated Capacity 5 0kW Class 6 0kW Class Front Panel Color Air Flow Rates m min cfm H 1...

Page 56: ...a 40 40 Moisture Removal l h 1 2 1 9 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm φ 6 4 φ 6 4 Gas mm φ 9 5 φ 9 5 Drain mm VP20 O D φ 26 I D φ 20 VP20 O D φ 26 I D φ 20 Drawing No 3D049727 3D049728 Model CDXS50DVMT CDXS60DVMT Cooling Heating Cooling Heating Capacity 5 0kW Class 6 0kW Class Front Panel Color Air Flow Rates m min cfm H 12 0 424 16 0 ...

Page 57: ... mm 274 906 751 274 906 751 Weight kg 21 21 Gross Weight kg 29 29 Operation Sound H M L SL dBA 35 33 31 29 35 33 31 29 35 33 31 29 35 33 31 29 External Static Pressure Pa 30 30 Moisture Removal L h 1 2 1 9 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm φ 6 4 φ 6 4 Gas mm φ 9 5 φ 9 5 Drain mm VP20 O D φ 26 I D φ 20 VP20 O D φ 26 I D φ 20 Drawing No 3...

Page 58: ...0 Drawing No 3D046600 3D046601 Model FLXS50BVMA FLXS60BVMA Cooling Heating Cooling Heating Rated Capacity 5 0kW Class 5 7kW Class Front Panel Color Almond White Almond White Air Flow Rates m min cfm H 11 4 403 12 1 427 12 0 424 12 8 452 M 10 0 353 9 8 346 10 7 378 10 6 374 L 8 5 300 7 5 265 9 3 328 8 4 297 SL 7 5 265 6 8 240 8 3 293 7 5 265 Fan Type Sirocco Fan Sirocco Fan Motor Output W 34 34 Spe...

Page 59: ... H M L SL dBA 39 33 27 24 39 33 26 23 44 40 36 33 45 40 36 33 Sound Power H dBA 56 57 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm φ 6 4 φ 6 4 Gas mm φ 9 5 φ12 7 Drain mm φ20 0 φ20 0 Drawing No 3D054434A 3D055051 Conversion Formulae kcal h kW 860 Btu h kW 3414 cfm m min 35 3 Model FFQ25B8V1B FFQ35B8V1B Cooling Heating Cooling Heating Rated Capacit...

Page 60: ...r Filter Running Current Rated A 0 51 0 46 0 63 0 57 Power Consumption Rated W 117 109 140 131 Power Factor 95 6 98 7 92 6 95 8 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 260 286 575 575 260 286 575 575 Packaged Dimensions H W D mm 370 687 674 370 687 674 Weight kg 17 5 17 5 Gross Weight kg 21 21 Operation Sound H L dBA 38 0 28 0 38 0 28 0 42 0 34 0 42 0 34...

Page 61: ...rting Current A 6 3 9 0 Dimensions H W D mm 735 936 300 735 936 300 Packaged Dimensions H W D mm 792 992 390 792 992 390 Weight kg 49 59 Gross Weight kg 56 64 Operation Sound dBA 46 47 48 49 Sound Power dBA 59 60 61 62 Piping Connection Liquid mm φ 6 4 3 φ 6 4 3 Gas mm φ 9 5 2 φ 12 7 1 φ 12 7 3 Drain mm φ 18 0 φ 18 0 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes No of Wiring ...

Page 62: ...W H 86 L 55 H 55 L 9 Starting Current A 9 7 Dimensions H W D mm 770 900 320 Packaged Dimensions H W D mm 900 925 390 Weight kg 72 Gross Weight kg 81 Operation Sound dBA 48 49 Sound Power dBA 61 62 Piping Connection Liquid mm φ 6 4 4 Gas mm φ 9 5 1 φ 12 7 1 φ 15 9 2 Drain mm φ 25 Heat Insulation Both Liquid and Gas Pipes No of Wiring Connection 3 for Power Supply 4 for Interunit Wiring Max Interuni...

Page 63: ...73 L 9 Starting Current A 14 0 14 0 Dimensions H W D mm 770 900 320 770 900 320 Packaged Dimensions H W D mm 900 925 390 900 925 390 Weight kg 72 72 Gross Weight kg 81 81 Operation Sound dBA 50 51 50 51 Piping Connection Liquid mm φ 6 4 3 φ 6 4 4 Gas mm φ 9 5 1 φ12 7 1 φ15 9 1 φ 9 5 1 φ12 7 1 φ15 9 2 Drain mm φ 25 0 φ 25 0 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes No of W...

Page 64: ...uit Board Connector Wiring Diagram 52 1 1 Wall Mounted Type 52 1 2 Duct Connected Type 56 1 3 Floor Ceiling Suspended Dual Type 58 1 4 Floor Standing Type 61 1 5 Ceiling Mounted Cassette Type 600 600 64 1 6 Outdoor Units E Series 50 58 Class 80 100 Class 67 1 7 Outdoor Units E Series 68 75 Class 70 1 8 Outdoor Units D Series 73 ...

Page 65: ...tralized control HA 4 S26 Connector for display PCB 5 S28 Connector for signal receiver PCB 6 S32 Connector for heat exchanger thermistor 7 S35 Connector for INTELLIGENT EYE sensor PCB 1 S29 Connector for control PCB 1 S27 Connector for control PCB 1 S36 Connector for control PCB 1 V1 Varistor 2 JA Address setting jumper JB Fan speed setting when compressor is OFF on thermostat JC Power failure re...

Page 66: ...Circuit Board Connector Wiring Diagram 53 PCB Detail PCB 1 Control PCB indoor unit PCB 4 INTELLIGENT EYE sensor PCB V1 S1 FU1 S6 S26 S28 S32 JC JB JA LED A S35 S21 R4288 PCB 2 Signal Receiver PCB PCB 3 Display PCB S29 R4289 RTH1 SW1 S27 LED3 LED2 LED1 R4290 S36 R4291 ...

Page 67: ...lized control HA 5 S26 Connector for buzzer PCB 6 S28 Connector for signal receiver PCB 7 S32 Connector for heat exchanger thermistor 8 S35 Connector for Intelligent Eye sensor PCB 1 S29 Connector for control PCB 1 S27 Connector for control PCB 2 S38 Connector for display PCB 1 S37 Connector for buzzer PCB 1 S36 Connector for control PCB 1 V1 Varistor 2 JA Address setting jumper JB Fan speed setti...

Page 68: ...nector Wiring Diagram 55 PCB Detail PCB 1 Control PCB indoor unit PCB 2 Signal Receiver PCB PCB 3 Buzzer PCB PCB 4 Display PCB PCB 5 INTELLIGENT EYE sensor PCB S1 V1 FU1 S6 S8 S26 R2860 S28 S32 JC JB JA LED A S21 S35 SW1 S29 R2861 R2862 RTH1 S38 S27 LED1 LED2 LED3 S37 R2863 S36 R2864 ...

Page 69: ...ontrol to 5 rooms 4 S26 Connector for display PCB 5 S32 Connector for heat exchanger thermistor 1 S1 Connector for control PCB 1 V1 Varistor 2 JA Address setting jumper JB Fan speed setting when compressor is OFF on thermostat JC Power failure recovery function Refer to page 357 for more detail 3 LED A LED for service monitor green 4 FU1 Fuse 3 15A 1 SW1 S1W Forced operation ON OFF switch 2 LED1 L...

Page 70: ...Si12 619A Printed Circuit Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 57 PCB Detail PCB 2 Display PCB ...

Page 71: ...r display PCB 5 S26 Connector for signal receiver PCB 6 S32 Connector for heat exchanger thermistor 7 S37 Connector for power supply PCB 1 S36 Connector for control PCB 1 S25 Connector for control PCB 1 S27 Connector for control PCB 2 S31 Connector for room temperature thermistor 1 JA Address setting jumper JB Fan speed setting when compressor is OFF on thermostat JC Power failure recovery functio...

Page 72: ...Si12 619A Printed Circuit Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 59 PCB Detail PCB 1 Control PCB indoor unit PCB Detail PCB 2 Power Supply PCB ...

Page 73: ... Board Connector Wiring Diagram Si12 619A 60 Printed Circuit Board Connector Wiring Diagram PCB 3 Display PCB PCB 4 Signal Receiver PCB SW1 PbF PHOTO 2P084377 1 SW1 I RTH WLU 3 C1 C2 C3 EX511 REV 12 S27 R4977 S31 RTH ...

Page 74: ...onnector for room temperature heat exchanger thermistor 5 S7 S201 S203 Connector for power supply PCB 6 S25 Connector for signal receiver PCB 7 S301 S302 Connector for DC fan motors 1 S26 Connector for control PCB 1 S24 Connector for control PCB 1 V1 Varistor 2 JA Address setting jumper JB Fan speed setting when compressor is OFF on thermostat JC Power failure recovery function auto restart Refer ...

Page 75: ...Printed Circuit Board Connector Wiring Diagram Si12 619A 62 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB 1 Power Supply PCB 35 class PCB Detail PCB 1 Power Supply PCB 50 class ...

Page 76: ...Si12 619A Printed Circuit Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 63 PCB Detail PCB 2 Control PCB indoor unit PCB 3 Display PCB PCB 4 Signal Receiver PCB ...

Page 77: ...r fan motor 7 X24A Connector for signal receiver PCB when the wireless remote controller is used 8 X25A Connector for drain pump motor 9 X27A Connector for terminal strip for inter unit wiring 10 X33A Optional connector for wiring adaptor PCB 11 X35A Optional connector for group control adaptor 12 X36A Connector for swing motor 13 X40A Optional connector for ON OFF input from outside 14 X60A X61A ...

Page 78: ...ng Diagram Printed Circuit Board Connector Wiring Diagram 65 PCB Detail PCB 1 Control PCB A1P indoor unit X25A X18A X61A X36A X40A X17A X15A HAP Service monitor LED Capacity setting adaptor X5A X35A X24A X60A X19A X11A X33A X10A X27A X20A 2P095006 ...

Page 79: ...rcuit Board Connector Wiring Diagram Si12 619A 66 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB 2 Signal Receiver PCB A3P PCB 3 Display PCB A4P X2A R4873 X1A SS2 LED4 X1A BS1 R4874 LED3 LED2 LED1 ...

Page 80: ...xpansion valve coil D port yellow 7 S40 Connector for overload protector 8 S51 S101 Connector for service monitor PCB 9 S70 Connector for fan motor 10 S80 Connector for four way valve coil 11 S90 Connector for thermistors outdoor air heat exchanger and discharge pipe 12 S92 Connector for gas pipe thermistor 13 S93 Connector for liquid pipe thermistor 14 AC1 AC2 Connector for terminal strip power s...

Page 81: ... PCB 1 Main PCB 50 58 class models PCB 1 Main PCB 80 100 class models V3 V11 AC1 FU2 3 15A HR1 HR2 FU3 3 15A R6041 S40 S20 S70 S90 S93 S92 S23 S21 S22 S51 S10 AC2 S15 S101 V5 S80 V6 V2 FU1 30A V3 AC1 FU2 3 15A HR1 V100 HR2 FU3 3 15A R6060 S40 S20 S21 S22 S23 S70 S90 S92 S93 S24 S51 S5 AC2 S101 S10 V5 S80 V9 V2 FU1 30A ...

Page 82: ...Si12 619A Printed Circuit Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 69 PCB 2 Service Monitor PCB ...

Page 83: ... S71 Connector for S72 on inverter PCB MID2 12 S80 Connector for four way valve coil 13 S90 Connector for thermistors outdoor air heat exchanger and discharge pipe 14 S91 Connector for fin thermistor 15 S92 Connector for gas pipe thermistor 16 S93 Connector for liquid pipe thermistor 17 S101 Connector for S102 on service monitor PCB 18 S102 Connector for S101 on PCB1 19 AC1 Connector for HAC1 or f...

Page 84: ...ontrol PCB outdoor unit PCB 2 Service monitor PCB PCB 3 Filter PCB 1 CN11 Connector for S32 on PCB 2 CN14 Connector for S31 on PCB 3 L1 L2 Connector for reactor S23 S80 E S102 AC1 V2 AC2 V5 FU2 S93 S22 S21 S91 S92 S20 S90 S40 S31 S71 S33 S32 H2 H1 LED A S52 LED 1 LED 2 LED 3 LED 4 S10 S51 S101 2P138922 3P179175 HL FU1 HAC1 V3 HE2 ...

Page 85: ...Printed Circuit Board Connector Wiring Diagram Si12 619A 72 Printed Circuit Board Connector Wiring Diagram Inverter PCB MID2 SPM W V U N S34 S72 S70 FU201 3 15A 3P080085 3EB10032 CN14 CN11 L1 L2 ...

Page 86: ... on PCB 12 S71 Connector for S72 on inverter PCB MID2 13 S80 Connector for four way valve coil 14 S90 Connector for thermistors outdoor air heat exchanger and discharge pipe 15 S91 Connector for fin thermistor 16 S92 Connector for gas pipe thermistor 17 S93 Connector for liquid pipe thermistor 18 S101 Connector for S102 on service monitor PCB 19 S102 Connector for S101 on PCB 20 AC1 Connector for ...

Page 87: ...CB 1 Control PCB outdoor unit PCB 2 Service monitor PCB MID1 1 CN11 Connector for S32 on PCB 2 CN14 Connector for S31 on PCB 3 L1 L2 Connector for reactor S23 S80 E S102 AC1 V2 AC2 V5 FU2 S93 S22 S21 S91 S92 S20 S90 S40 S31 S71 S33 S32 H2 H1 LED A S52 LED 1 LED 2 LED 3 LED 4 S10 S51 S101 2P138922 3P179175 HL FU1 HAC1 V3 HE2 ...

Page 88: ...Si12 619A Printed Circuit Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 75 Inverter PCB MID2 SPM W V U N S34 S72 S70 FU201 3 15A 3P080085 3EB10032 CN14 CN11 L1 L2 ...

Page 89: ...Printed Circuit Board Connector Wiring Diagram Si12 619A 76 Printed Circuit Board Connector Wiring Diagram ...

Page 90: ...tion 91 1 13 Other Functions 92 2 Function of Main Structural Parts 94 2 1 Main Structural Parts 94 2 2 Function of Thermistor 95 3 Control Specification 99 3 1 Mode Hierarchy 99 3 2 Frequency Control 100 3 3 Controls at Mode Changing Start up 103 3 4 Discharge Pipe Temperature Control 104 3 5 Input Current Control 104 3 6 Freeze up Protection Control 105 3 7 Heating Peak cut Control 105 3 8 Fan C...

Page 91: ...le explains the conversion principle Drawing of Inverter The following drawing shows a schematic view of the inverter principle Phase Description 1 The supplied AC power source is converted into the DC power source for the present 2 The DC power source is reconverted into the three phase AC power source with variable frequency When the frequency increases the rotation speed of the compressor incre...

Page 92: ... condition with a small room temperature variation Energy saving heating and cooling Once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power Frequency Limits The following table shows the functions that define the minimum and maximum frequency Forced Cooling Heating Operation For more information refer to Forced operation mode on page 1...

Page 93: ...rflow that guarantees a comfortable air distribution Auto Swing In case of FTK X S20 35D FTK X S25 35E The following table explains the auto swing process for heating cooling dry and fan 3 D Airflow Wall Mounted Type 50 71 Class Alternative repetition of vertical and horizontal swing motions enables uniform air conditioning of the entire room This function is effective for starting the air conditi...

Page 94: ...n 2 In time of thermostat OFF the fan rotates at the following speed Cooling The fan keeps rotating at the set tap Heating The fan stops Automatic Air Flow Control for Heating On heating mode the indoor fan speed will be regulated according to the indoor heat exchanger temperature and the difference between the room temperature and the required set point Automatic Air Flow Control for Cooling The ...

Page 95: ...e room temperature at startup and the temperature set by the microcomputer is divided into two zones Then the unit operates in the dry mode with an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Room temperature at startup Set temperature X Thermostat OFF point Y Thermostat ON point Z 24ºC or more Room temperature at startup X 2 5ºC X 0 5ºC or Y ...

Page 96: ...0 C 2 Main unit setting temperature equals remote controller setting temperature 3 Operation ON OFF point and mode switching point are as follows Heating Cooling switching point Room temperature Main unit setting temperature 2 5 deg Cooling Heating switching point Room temperature Main unit setting temperature 2 5 deg Thermostat ON OFF point is the same as the ON OFF point of cooling or heating op...

Page 97: ...A The monitoring time has passed while the temperature difference is in the zone B Cooling Dry 10 minutes Heating 10 seconds Cooling Dry Wall Mounted Type Floor standing Type Floor Ceiling suspended Type Duct Connected Type Heating Wall Mounted Type Floor standing Type Floor Ceiling suspended Type Duct Connected Type B A OFF ON C Cooling 0 5 C Dry 0 5 C Room temperature setpoint Cooling 2 0 C Dry ...

Page 98: ...ling the room at the set temperature for the first one hour then automatically raises the temperature setting slightly in the case of cooling or lowers it slightly in the case of heating for economical operations This prevents excessive heating in winter and excessive cooling in summer to ensure comfortable sleeping conditions and also conserves electricity Cooling Operation In case of FTK X S25 3...

Page 99: ... by pushing the ECONO button When this function is ON the maximum capacity is also down Approx 20 This function can only be set when the unit is running Pressing the operation stop button causes the settings to be canceled This function and POWERFUL operation cannot be used at the same time The latest command has the priority Details ECONO mode can be activated while the unit is running The remote...

Page 100: ...ine MOLD PROOF operation starts when the following conditions are met 1 MOLD PROOF is set on the remote controller 2 Cooling or dry operation stops MOLD PROOF operation will operate for approximately one hour after dry or cooling mode is turned off The indoor fan rotates at 550 rpm Note 1 This function is not designed to remove existing dust or mold 2 MOLD PROOF operation is not available when the...

Page 101: ...en a microcomputer doesn t have a signal from the sensor in 20 minutes it judges that nobody is in the room and operates the unit in temperature shifted 2 C from the set temperature Cooling Dry 2 C higher Heating 2 C lower and Auto according to the operation mode at that time 1 In case of Fan mode the fan speed reduces by 50 rpm If the sensor detects the outputs 10 times sec or more it judges huma...

Page 102: ...es so as to prevent this phenomena After this 40 minutes the prohibition of the thermostat off is cancelled and it can realize the conditions to conduct thermostat off depending on the room temperature In or after this 40 minutes if the sensor detects human motion detection signal it let the set temperature and the fan speed return to the original set point keeping a normal operation Others The dr...

Page 103: ...ed the function becomes effective when the operation is started If this button is pressed in powerful operation the powerful operation is reset and this function becomes effective The HOME LEAVE button is ineffective in dry mode and fan mode 2 Details of Function A mark representing HOME LEAVE is indicated on the liquid crystal display of the remote controller The indoor unit is operated according...

Page 104: ...5D FTK X S25 35E Ex POWERFUL operation in cooling mode Refer to Fan Speed control on page 81 for detail Operation mode Fan speed Target set temperature COOL H tap 50 rpm 18 C DRY Dry rotating speed 50 rpm Normally targeted temperature in dry operation Approx 2 C HEAT H tap 50 rpm 30 C FAN H tap 50 rpm AUTO Same as cooling heating in POWERFUL operation The target is kept unchanged R4560 Target temp...

Page 105: ...n mode refers to the following table In the case of multi system operation there are times when the unit does not activate with this button Forced operation mode Forced operation mode will be set by pressing the ON OFF button for between 5 to 9 sec while the unit is not operating Note When the ON OFF button is pressed for 10 sec or more the operation will be stopped See page 113 for the detail of ...

Page 106: ...of air required to air condition large living rooms The filter can be used for approximately 3 years if periodic maintenance is performed 1 13 8 Mold Proof Air Filter Prefilter For all indoor units The filter net is treated with mold resisting agent TBZ harmless colorless and odorless Due to this treatment the amount of mold growth is much smaller than that of normal filters 1 13 9 Self Diagnosis ...

Page 107: ...Main Structural Parts 2 1 Main Structural Parts Heat Pump Model Cooling Only Model Note Expansion Valve In Case of 2 port model EVA B 3 port model EVA C 4 port model EVA D Four way valve Compressor EVB EVC EVD EVA Expansion valve R4595 Compressor EVB EVC EVD EVA Expansion valve R4596 ...

Page 108: ...rge pipe temperature becomes lower than the outdoor heat exchanger temperature the discharge pipe thermistor is judged as disconnected B Discharge Pipe Thermistor 1 The discharge pipe thermistor is used for controlling temperature of the discharge pipe If the temperature of discharge pipe used in place of the inner temperature of the compressor rises abnormally the operating frequency drops or the...

Page 109: ...mes lower than the indoor heat exchanger temperature the discharge pipe thermistor is judged as disconnected The indoor heat exchanger thermistors are also used for preventing abnormal high pressure 5 The indoor heat exchanger thermistors are used for detecting incorrect wiring During checking incorrect wiring refrigerant is passed in order from the port A to detect a heat exchanger temperature an...

Page 110: ... pipe temperature becomes lower than the outdoor heat exchanger temperature the discharge pipe thermistor is judged as disconnected B Discharge Pipe Thermistor 1 The discharge pipe thermistor is used for controlling temperature of the discharge pipe If the temperature of discharge pipe used in place of the inner temperature of the compressor rises abnormally the operating frequency drops or the op...

Page 111: ...eezing During the cooling operation if the temperature drops abnormally the operating frequency becomes lower then the operation halts 3 The indoor heat exchanger thermistors are used for anti icing control During the cooling operation if the heat exchanger temperature in the room where operation is halted becomes 1 C or if the room temperature heat exchanger temperature in the room where operatio...

Page 112: ...peration Determine Operating Mode Judge the operating mode command set by each room in accordance with the instructing procedure and determine the operating mode of the system The following procedure will be taken as the modes conflict with each other 1 The system will follow the mode determined first First push first set 2 For the rooms set with different mode select stand by mode Operation lamp ...

Page 113: ...Set a minimum value as an upper limit frequency among the frequency upper limits of the following functions Compressor protection input current discharge pipes Low Hz high pressure peak cutting freeze up protection defrost 3 Determine lower limit frequency Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions Four way valve operating compensati...

Page 114: ...ency must be initialized according to the total of a maximum D value of each room and a total value of Q ΣQ of the operating room the room in which the thermostat is set to ON Q value Indoor unit output determined from indoor unit volume air flow rate and other factors PI Control Determine Frequency Up Down by D Signal 1 P control Calculate a total of the D value in each sampling time 20 seconds a...

Page 115: ...g lower limit Frequency management is carried out only when the frequency rises 5 Upper and lower limit of frequency by PI control The frequency upper and lower limits are set depending on the total of S values of a room When low noise commands come from the indoor unit more than one room or when outdoor unit low noise or quiet commands come from all the rooms the upper limit frequency must be low...

Page 116: ...ped Detail The OFF delay of four way valve Energize the coil for 150 sec after unit operation is stopped 3 3 3 Four Way Valve Operation Compensation Outline Heat Pump Only At the beginning of the operation as the four way valve is switched acquire the differential pressure required for activating the four way valve by having output the operating frequency which is more than a certain fixed frequen...

Page 117: ...ing on the stop zone the compressor operation stops If a drooping current is continues for 1 0 second after rushing on the drooping zone the frequency will be 2 Hz drooping Repeating the above drooping continues until the current rushes on the drooping zone without change In the keep zone the frequency limit will remain In the return reset zone the frequency limit will be cancelled Limitation of c...

Page 118: ...ing Peak cut Control Outline Heat Pump Only During heating operation the signals being sent form the indoor unit allow the operating frequency limitation and prevent abnormal high pressure The signal from the indoor unit must be divided as follows Detail Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 min from operation start and afte...

Page 119: ...ontrol in Indoor Outdoor Unit Silent Operation 1 When Cooling Operation When the outdoor air temperature is less than 37 C the fan tap must be set to L 2 When Heating Operation When the outdoor air temperature is more than 4 C the fan tap must be turned to L only for heat pump model 3 9 Liquid Compression Protection Function 2 Outline In order to obtain the dependability of the compressor the comp...

Page 120: ...starts A 19 256 B 45 64 C A outdoor heat exchanger temperature B output frequency C outdoor air temperature Conditions for Canceling Defrost The target heat exchanger temperature as the canceling condition is selected in the range of 4 C Te 12 C according to the air temperature as the following formula The target heat exchanger temperature 45 64 ambient temperature 14 The defrost operation surely ...

Page 121: ...lectronic expansion valve is fully closed when turning on the power 2 Pressure equalizing control Room Distribution Control 1 Gas pipe isothermal control distribution control in cooling 2 SC control distribution control in heating Open Control 1 Electronic expansion valve control when starting operation 2 Control when frequency changed 3 Control for defrosting only for heat pump model 4 Oil recove...

Page 122: ...re equalizing control Gas pipe isothermal control SC control only for heat pump model Control when frequency changed Control for abnormally high discharge pipe temperature Liquid pipe temperature control for stopped rooms Dew prevention control for indoor rotor Oil recovery control Indoor freeze up protection control Liquid pipe temperature control When power is turned ON Cooling 1 room operation ...

Page 123: ...the average gas pipe temperature open the electronic expansion valve in that room When the gas pipe temperature the average gas pipe temperature close the electronic expansion valve in that room The temperatures are monitored every 40 seconds 3 12 5 SC Control Outline Heat Pump Only Detect the temperature of liquid pipe and heat exchanger of the rooms and compensate the electronic expansion valve ...

Page 124: ...tem should be down 3 12 8 Control when frequency is changed When the target pipe temperature control is active if the target frequency is changed for a specified value in a certain time period cancel the target discharge pipe temperature control and change the opening of the target electronic expansion valve according to the shift 3 12 9 High Temperature of the Discharge Pipe When the compressor i...

Page 125: ...f the OL compressor head temperature exceeds 130 C 120 C for 2YC36 the compressor gets interrupted If the inverter current exceeds 30 A the compressor gets interrupted too 3 13 3 Insufficient Gas Control Outline I Detecting by power consumption If the power consumption is below the specified value and the frequency is higher than the specified frequency it is regarded as insufficient gas The power...

Page 126: ... more than 1 room 2 The outdoor unit is not abnormal and not in the 3 minute stand by mode 3 The operating mode of the outdoor unit is the stop mode 4 The slide selection switch of the forced operation is the cooling mode The forced operation is allowed when the above and conditions are met 4 The slide selection switch of the forced operation is the heating mode The forced operation is allowed whe...

Page 127: ...e indoor unit heat exchanger thermistor is disconnected An indoor unit is in trouble if a trouble occurs during the wiring error checking Emergency stop Any of the LED indicators 1 4 stays on Note 1 It takes about 10 15 minutes after pressing the wiring error check switch to complete the checking Wrong wiring between the upper and lower units cannot be self corrected 2 Wrongly connected liquid and...

Page 128: ...rced operation is over LED1 Room A wiring LED2 Room B wiring 1st flashing LED Port A piping 2nd flashing LED Port B piping The first stay on LED means the room that is connected with Port A The next stay on LED means the one connected with Port B Example Let s suppose the LED indicators are flashing as follows The above means that Port A is connected with Port B and Port B with Room A or self corr...

Page 129: ...room can be set as the priority room Control start conditions Priority room setting is made AND Powerful signal from the priority room unit is received Note The operation mode of the priority room unit has precedence Cancellation of control The control function is canceled when the Powerful operation mode is switched off or 20 minutes elapse after Powerful Operation started 3 16 3 POWERFUL Operati...

Page 130: ...ossible in COOL HEAT mode 3 16 6 ECONO mode proof Setting E series 50 58 class 80 100 class Outline When installing in hotels you can make ECONO mode ineffective on the outdoor unit Operation The ECONO mode can be switched over between effective and ineffective by pressing the forced operation switch SW1 and wiring error check switch SW3 at the same time and holding them for 5 seconds while the co...

Page 131: ...Control Specification Si12 619A 118 Function and Control ...

Page 132: ...12 619A Operation Manual 119 Part 5 Operation Manual 1 System Configuration 120 1 1 Operation Instructions 120 2 Instruction 121 2 1 FTK X S CDK X S FDK X S FLXS FVXS Series 121 2 2 FFQ 25 35 50 60 B 189 ...

Page 133: ...to know a clever method of using it In order to meet this expectation of the users giving sufficient explanations taking enough time can be said to reduce about 80 of the requests for servicing However good the installation work is and however good the functions are the customer may blame either the room air conditioner or its installation work because of improper handling The installation work an...

Page 134: ...em 167 167 167 Care Care and Cleaning 169 172 175 Trouble Shooting Trouble Shooting 186 186 186 Drawing No 3P194550 4 3P194539 2 3P194537 4 3P194539 3 3P192025 1 3P194539 1 3P182978 3 3P142638 9L 3P194444 2 Model Series Duct Connected Type Floor Ceiling Suspended Dual Type Floor standing Type CDKS25 35 50 60C FDK X S25 35 50 60C CDK X S25 35 50 60D FDKS25 35E CDK X S25 35E FLXS25 35 50 60B FVXS35 ...

Page 135: ...erant check the content of the repairs with our service staff Do not attempt to install the air conditioner by your self Incorrect work will result in water leakage electric shocks or fire For installation consult the dealer or a qualified technician In order to avoid electric shock fire or injury if you detect any abnormally such as smell of fire stop the operation and turn off the breaker And ca...

Page 136: ...e Incomplete draining may cause wetting of the building furniture etc Do not operate the air conditioner with wet hands Do not wash the indoor unit with excessive water only use a slightly wet cloth Do not place things such as vessels containing water or anything else on top of the unit Water may pene trate into the unit and degrade electrical insulations resulting in an electric shock To install ...

Page 137: ...Instruction Si12 619A 124 Operation Manual 2 1 3 Names of Parts FTK X S 20 25 35 D FTK X S 25 35 E Names of parts Indoor Unit ON OFF 16 14 13 15 12 1 3 4 5 7 9 10 11 8 6 2 ...

Page 138: ...o start operation Push once again to stop it The operation mode refers to the following table This switch is useful when the remote controller is missing 13 Operation lamp green 14 TIMER lamp yellow 15 INTELLIGENT EYE lamp green 16 Signal receiver It receives signals from the remote controller When the unit receives a signal you will hear a short beep Operation start beep beep Settings changed bee...

Page 139: ... again to stop it 7 MODE selector button It selects the operation mode AUTO DRY COOL HEAT FAN 9 FAN setting button It selects the air flow rate setting 10 SWING button 11 MOLD PROOF button MOLD PROOF operation 12 SENSOR button INTELLIGENT EYE operation 13 ON TIMER button 14 OFF TIMER button 15 TIMER Setting button It changes the time setting 16 TIMER CANCEL button It cancels the timer setting 17 C...

Page 140: ...Si12 619A Instruction Operation Manual 127 FTK X S 50 60 71 F Names of parts Indoor Unit 1 2 4 3 10 11 9 7 8 15 12 13 14 16 6 5 ...

Page 141: ...en you use HOME LEAVE Operation 15 Indoor Unit ON OFF switch Push this switch once to start operation Push once again to stop it The operation mode refer to the following table This switch is useful when the remote controller is missing 16 Signal receiver It receives signals from the remote controller When the unit receives a signal you will hear a short beep Operation start beep beep Settings cha...

Page 142: ...t operation Press once again to stop it 7 MODE selector button It selects the operation mode AUTO DRY COOL HEAT FAN 8 QUIET button OUTDOOR UNIT QUIET operation 9 FAN setting button It selects the air flow rate setting 10 SENSOR button INTELLIGENT EYE operation 11 SWING button Flap Horizontal blade 12 SWING button Louver Vertical blades 13 ON TIMER button 14 OFF TIMER button 15 TIMER Setting button...

Page 143: ...Instruction Si12 619A 130 Operation Manual FTK X S 50 60 71 D FTKS 50 60 71 B Names of parts Indoor Unit Main unit control panel ...

Page 144: ...sh this switch once to start operation Push once again to stop it The operation mode refer to the following table This switch is useful when the remote controller is missing 15 Packaging materials 50 class only If any packaging materials are included please remove before operating 16 Room temperature sensor It senses the air temperature around the unit 17 Signal receiver It receives signals from t...

Page 145: ...ton once to start operation Press once again to stop it 7 MODE selector button It selects the operation mode AUTO DRY COOL HEAT FAN 8 QUIET button for OUTDOOR UNIT QUIET operation 9 FAN setting button It selects the air flow rate setting 10 SENSOR button for INTELLIGENT EYE operation 11 SWING button Flap Horizontal blade 12 SWING button Louver Vertical blades 13 ON TIMER button 14 OFF TIMER button...

Page 146: ...Si12 619A Instruction Operation Manual 133 Duct Connected Type Names of parts Indoor Unit 3 6 8 9 10 7 1 4 5 2 ...

Page 147: ...ation lamp green 8 TIMER lamp yellow 9 HOME LEAVE lamp red Lights up when you use HOME LEAVE operation 10 Indoor Unit ON OFF switch Push this switch once to start operation Push once again to stop it This switch is useful when the remote controller is missing The operation mode refers to the following table Outdoor Unit 11 Air inlet Back and side 12 Refrigerant piping and inter unit cable 13 Drain...

Page 148: ...hanges the temperature setting 6 ON OFF button Press this button once to start operation Press once again to stop it 7 MODE selector button It selects the operation mode AUTO DRY COOL HEAT FAN 8 QUIET button OUTDOOR UNIT QUIET operation 9 FAN setting button It selects the air flow rate setting 10 ON TIMER button 11 OFF TIMER button 12 TIMER Setting button It changes the time setting 13 TIMER CANCE...

Page 149: ...l The descriptions contained in this man ual show the case when installation is being carried out to the ceiling The methods of operation used are the same when installing to a wall Opening the front grille How to open the front grille CAUTION Before opening the front grille be sure to stop the operation and turn the breaker OFF O N OFF 1 2 3 4 5 6 11 12 10 7 9 8 13 14 ...

Page 150: ...witch once to start operation Push once again to stop it The operation mode refers to the following table Push the switch using an object with a sharp tip such as a pen This switch is useful when the remote controller is missing 14 Signal receiver It receives signals from the remote controller When the unit receives a signal you will hear a short beep Operation start beep beep Settings changed bee...

Page 151: ...ng 6 ON OFF button Press this button once to start operation Press once again to stop it 7 MODE selector button It selects the operation mode AUTO DRY COOL HEAT FAN 8 QUIET button 9 FAN setting button It selects the air flow rate setting 10 SWING button 11 ON TIMER button 12 OFF TIMER button 13 TIMER Setting button It changes the time setting 14 TIMER CANCEL button It cancels the timer setting 16 ...

Page 152: ...d turn the breaker OFF Do not touch the metal parts on the inside of the indoor unit as it may result in injury ON OFF 1 2 4 5 2 6 7 8 3 10 14 15 12 13 Air outlet selection switch This setting blows air from upper outlet only This setting automatically decides a blow pattern depending on mode and conditions The unit is shipped from the factory with this setting This setting is recommended Air outl...

Page 153: ...stop it The operation mode refers to the following table This switch is useful when the remote controller is missing 13 Signal receiver Signals are received from the remote controller When the unit receives a signal you will hear a short beep Operation start beep beep Settings changed beep Operation stop beeeeep 14 Air outlet selection switch 15 Room temperature sensor It senses the air temperatur...

Page 154: ...he temperature setting 6 ON OFF button Press this button once to start operation Press once again to stop it 7 MODE selector button It selects the operation mode AUTO DRY COOL HEAT FAN 8 SILENT button for OUTDOOR UNIT SILENT operation 9 FAN setting button It selects the air flow rate setting 10 SWING button 11 ON TIMER button 12 TIMER Setting button It changes the time setting 13 OFF TIMER button ...

Page 155: ...ype and replace the two old batteries together When the system is not used for a long time take the batteries out We recommend replacing once a year although if the remote controller display begins to fade or if reception deteriorates please replace with new alkali batteries Do not use manganese batteries The attached batteries are provided for the initial use of the system The usable period of th...

Page 156: ...ch the unit 2 Fix the holder to a wall a pillar etc with the screws supplied with the holder 3 Place the remote controller in the remote controller holder ATTENTION About remote controller Never expose the remote controller to direct sunlight Dust on the signal transmitter or receiver will reduce the sensitivity Wipe off dust with soft cloth Signal communication may be disabled if an electronic st...

Page 157: ... not going to use the air conditioner for a long period for example in spring or autumn turn the breaker OFF Use the air conditioner in the following conditions Operation outside this humidity or temperature range may cause a safety device to disable the system TEMP ON OFF POWERFUL MODE FAN SWING SENSOR ECONO MOLDPROOF TIMER ON CANCEL OFF QUIET 1 3 2 Recommended temperature setting For cooling 26 ...

Page 158: ...ect a operation mode Each pressing of the button advances the mode setting in sequence AUTO DRY COOL HEAT FAN 2 Press ON OFF button The OPERATION lamp lights up To stop operation 3 Press ON OFF button again Then OPERATION lamp goes off To change the temperature setting 4 Press TEMPERATURE adjustment button DRY or FAN mode AUTO or COOL or HEAT mode The temperature setting is not variable Press to r...

Page 159: ...ts warmer In heating operation frost may occur on the outdoor unit and lower the heating capacity In that case the system switches into defrosting operation to take away the frost During defrosting operation hot air does not flow out of indoor unit Note on COOL operation This air conditioner cools the room by blowing the hot air in the room outside so if the outside temperature is high performance...

Page 160: ...w direction to increase your com fort To adjust the horizontal blades flaps 1 Press SWING button is displayed on the LCD and the flaps will begin to swing 2 When the flaps have reached the desired position press SWING button once more The flaps will stop moving disappears from the LCD TEMP ON OFF POWERFUL MODE FAN SWING SENSOR ECONO MOLDPROOF TIMER ON CANCEL OFF QUIET 1 2 ...

Page 161: ...on flaps and louvres angles When SWING button is selected the flaps swinging range depends on the operation mode See the figure If the unit is operated after being stopped with the flaps pointed down in cooling or dry opera tion the flaps will automatically move to a hor izontal position after about one hour to prevent condensation from forming on them ATTENTION Always use a remote controller to a...

Page 162: ... on the LCD and the flaps will begin to swing 2 When the flap has reached the desired position press SWING button once more The flap will stop moving disappears from the LCD To adjust the vertical blades louvers 3 Press SWING button is displayed on the LCD 4 When the louvers have reached the desired position press the SWING button once more The louvers will stop moving disappears from the LCD TIME...

Page 163: ... selected the flaps swinging range depends on the operation mode See the figure Three Dimensional 3 D Airflow Using three dimensional airflow circulates cold air which tends to collected at the bottom of the room and hot air which tends to collect near the ceiling throughout the room preventing areas of cold and hot developing ATTENTION Always use a remote controller to adjust the flaps angle If y...

Page 164: ...air flow direction to increase your com fort To adjust the horizontal blade flap 1 Press SWING button is displayed on the LCD 2 When the flaps have reached the desired position press SWING button once more The flaps will stop moving C TEMP ON OFF POWERFUL HOME LEAVE MODE FAN SWING O N 1 2 QUIET TIMER ON CANCEL OFF ...

Page 165: ...ected you should set the flap at a near horizontal angle in COOL or DRY mode to obtain the best performance In COOL or DRY mode if the flap is fixed at a downward position the flap automatically moves in about 60 minutes to prevent condensation on it ATTENTION Always use a remote controller to adjust the flap angle If you attempt to move it forcibly with hand when it is swinging the mechanism may ...

Page 166: ... louvers Hold the knob and move the louver You will find a knob on the left side and the right side blades Notes on flap and louvers angle Unless SWING is selected you should set the flap at a near horizontal angle in HEAT mode and at a upward position in COOL or DRY mode to obtain the best performance ATTENTION When adjusting the flap by hand turn off the unit and use the remote controller to res...

Page 167: ...UTION Operating mode Situation Blowing pattern COOL mode When the room has become fully cool or when one hour has passed since turning on the air conditioner So that air does not come into direct contact with people air is blown upper air outlet room temperature is equlised At start of operation or other times when the room is not fully cooled Air is blown from the upper and lower air outlets for ...

Page 168: ...FUL Operation cannot be used together with ECONO or QUIET Operation Priority is given to the function of whichever button is pressed last POWERFUL Operation can only be set when the unit is running Pressing the operation stop button causes the settings to be canceled and the disappears from the LCD In COOL and HEAT mode To maximize the cooling heating effect the capacity of outdoor unit must be in...

Page 169: ...UTDOOR UNIT QUIET operation If using a multi system this function will work only when the OUTDOOR UNIT QUIET operation is set on all operated indoor units However if using priority room setting see Note for multi system This function is available in COOL HEAT and AUTO modes This is not available in FAN and DRY mode POWERFUL operation and OUTDOOR UNIT QUIET operation cannot be used at the same time...

Page 170: ...tion stop button causes the settings to be canceled and the disappears from the LCD ECONO operation is a function which enables efficient operation by limiting the power consumption of the outdoor unit operating frequency ECONO operation functions in AUTO COOL DRY and HEAT modes POWERFUL operation and ECONO operation cannot be used at the same time Priority is given to the function of whichever bu...

Page 171: ... seconds is displayed on the LCD To cancel MOLD PROOF operation 2 Press and hold the MOLD PROOF button for two seconds one more time disappears from the LCD NOTE MOLD PROOF operation will operate for approximately one hour after dry or cooling mode is turned off This function is not designed to remove existing dust or mold MOLD PROOF operation is not available when the unit is turned off using the...

Page 172: ...ate for HOME LEAVE operation When using HOME LEAVE operation for the first time please set the temperature and air flow rate for HOME LEAVE operation Record your preferred temperature and air flow rate 1 Press HOME LEAVE button Make sure is displayed in the remote controller display 2 Adjust the set temperature with or as you like 3 Adjust the air flow rate with FAN setting button as you like Home...

Page 173: ...will be welcomed by a comfortably air conditioned room Push the HOME LEAVE Operation button again and the air conditioner will adjust capacity to the set temperature for normal operation Set the unit to HOME LEAVE Operation before leaving the living room when going to bed The unit will maintain the temperature in the room at a comfortable level while you sleep When you enter the living room in the...

Page 174: ...t INTELLIGENT EYE operation 1 Press SENSOR button is displayed on the LCD To cancel the INTELLIGENT EYE operation 2 Press SENSOR button again disappears from the LCD EX TEMP ON OFF POWERFUL MODE FAN SWING SENSOR ECONO MOLDPROOF TIMER ON CANCEL OFF QUIET 1 2 When somebody in the room Normal operation When nobody in the room 20 min after start energy saving operation Somebody back in the room Back t...

Page 175: ...ivity changes according to indoor unit location the speed of pass ersby temperature range etc The sensor also mistakenly detects pets sunlight fluttering curtains and light reflected off of mirrors as passersby INTELLIGENT EYE operatipon will not go on during powerful operation Night set mode will not go on during you use INTELLIGENT EYE operation Do not place large objects near the sensor Also ke...

Page 176: ...ement To start INTELLIGENT EYE operation 1 Press SENSOR button is displayed on the LCD To cancel the INTELLIGENT EYE operation 2 Press SENSOR button again disappears from the LCD EX TIMER ON CANCEL OFF QUIET 1 2 When somebody in the room Normal operation When nobody in the room 20 min after start energy saving operation Somebody back in the room Back to normal operation ...

Page 177: ... location the speed of passersby temperature range etc The sensor also mistakenly detects pets sunlight fluttering curtains and light reflected off of mirrors as passersby INTELLIGENT EYE operation will not go on during powerful operation Night set mode will not go on during you use INTELLIGENT EYE operation Do not place large objects near the sensor Also keep heating units or humidifiers outside ...

Page 178: ...nges the setting rapidly 3 Press OFF TIMER button again The TIMER lamp lights up To cancel the OFF TIMER operation 4 Press CANCEL button The TIMER lamp goes off NOTE When TIMER is set the present time is not displayed Once you set ON OFF TIMER the time setting is kept in the memory The memory is canceled when remote controller batteries are replaced When operating the unit via the ON OFF Timer the...

Page 179: ...10 minutes Holding down either but ton changes the setting rapidly 3 Press ON TIMER button again The TIMER lamp lights up To cancel ON TIMER operation 4 Press CANCEL button The TIMER lamp goes off To combine ON TIMER and OFF TIMER A sample setting for combining the two timers is shown below ATTENTION In the following cases set the timer again After a breaker has turned OFF After a power failure Af...

Page 180: ... Mode requires initial programming during installation Please consult your retailer or dealer for assistance NIGHT QUIET Mode reduces the operation noise of the outdoor unit during the night time hours to prevent annoyance to neighbors The NIGHT QUIET Mode is activated when the temperature drops 5 C or more below the highest temperature recorded that day Therefore when the temperature difference i...

Page 181: ...nd D are all operating If the unit in Room A enters POWERFUL operation operation capacity will be concentrated in Room A In such a case the cooling heating efficiency of the units in Rooms B C and D may be slightly reduced 3 Priority when using OUTDOOR UNIT QUIET operation Example Room A is the Priority Room in the examples Just by setting the unit in Room A to QUIET operation the air conditioner ...

Page 182: ...fter washing 4 Attach the front panel Set the 2 keys of the front panel into the slots and push them in all the way Close the front panel slowly and push the panel at the 3 points 1 on each side and 1 in the middle CAUTION Units Don t touch the metal parts of the indoor unit If you touch those parts this may cause an injury When removing or attaching the front panel use a robust and stable stool a...

Page 183: ...l detergent thinned with lukewarm water then dry them up in the shade It is recommended to clean the air filters every two weeks Titanium Apatite Photocatalytic Air Purifying Filter The Titanium Apatite Photocatalytic Air Purifying Filter can be renewed by washing it with water once every 6 months We recommend replacing it once every 3 years Maintenance 1 Remove dust with a vacuum cleaner and wash...

Page 184: ...odorize the air 2 cannot clean the air 3 results in poor heating or cooling 4 may cause odour To order Titanium Apatite Photocatalytic Air Purifying Filter contact to the service shop there you bought the air conditioner Dispose of old filters as burnable waste Check that the base stand and other fittings of the outdoor unit are not decayed or corroded Check that nothing blocks the air inlets and ...

Page 185: ...r dry it with cloth dry it up in the shade after washing 4 Attach the front panel Align the rotation dowels on the left and right of the front panel with the slots then push them all the way in Close the front panel slowly Press the panel at both sides and the center CAUTION Units Don t touch the metal parts of the indoor unit If you touch those parts this may cause an injury When removing or atta...

Page 186: ...st does not come off easily wash them with neutral detergent thinned with lukewarm water then dry them up in the shade It is recommended to clean the air filters every two weeks Titanium Apatite Photocatalytic Air purifying Filter The Titanium Apatite Photocatalytic Air Purifying Filter can be renewed by washing it with water once every 6 months We recommend replacing it once every 3 years Mainten...

Page 187: ...nnot deodorize the air 2 cannot clean the air 3 results in poor heating or cooling 4 may cause odour To order Titanium Apatite Photocatalytic Air Purifying Filter contact to the service shop there you bought the air conditioner Dispose of old filters as non flammable waste Check that the base stand and other fittings of the outdoor unit are not decayed or corroded Check that nothing blocks the air...

Page 188: ... in the shade after washing 4 Attach the front grille Align the rotation dowels on the left and right of the front panel with the slots then push them all the way in Close the front panel slowly Press the panel at both sides and the center CAUTION Units When the packaging materials are attached to the front panel please remove them Don t touch the metal parts of the indoor unit If you touch those ...

Page 189: ... vacuum cleaner If the dust does not come off easily wash them with neutral detergent thinned with lukewarm water then dry them up in the shade It is recommended to clean the air filters every two weeks Air purifying filter with photocatalytic deodorizing function gray The air purifying filter with photocatalytic deodorizing function can be renewed by washing it with water once every 6 months We r...

Page 190: ...ttings of the outdoor unit are not decayed or corroded Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit Check that the drain comes smoothly out of the drain hose during COOL or DRY operation If no drain water is seen water may be leaking from the indoor unit Stop operation and consult the service shop if this is the case Operation with dirty filters ...

Page 191: ...hot water to avoid filter shrinking or deformation After cleaning dry them in the shade 3 Replacing the air filter Rear suction Hook the filter behind the flap situated at the top of the unit and push the other side gently over the 3 bends Bottom suction Hook the filter behind the flap situated at the middle of the unit and push the other side gently over the 3 bends Only a qualified service perso...

Page 192: ...room before you use the fan operation Do not operate the air conditioner without filters this to avoid dust accummulation inside the unit Do not remove the air filter except when cleaning Unnecessary handling may damage the filter Do not use gasoline benzene thinner polishing powder liquid insecticide It may cause discoloring or warping Do not let the indoor unit get wet It may cause an electric s...

Page 193: ...ints indicated by Operation without air filters may result in troubles as dust will accumulate inside the indoor unit CAUTION Units Don t touch the metal parts of the indoor unit If you touch those parts this may cause an injury When opening and closing the front grille use a robust and stable stool and watch your steps carefully When opening and closing the front grille support the grille securel...

Page 194: ...warm water then dry them up in the shade It is recommended to clean the air filters every two weeks Air Purifying Filter green Replace approximately once every 3 months 1 Detach the filter element and attach a new one Insert with the green side up It is recommended to replace the air purifying filter every three months Photocatalytic Deodorizing Filter gray Maintenance 1 Dry the photocatalytic deo...

Page 195: ...om the indoor unit Stop operation and consult the ser vice shop if this is the case Operation with dirty filters 1 cannot deodorize the air 2 cannot clean the air 3 results in poor heating or cooling 4 may cause odour The air purifying filter and Photocatalytic deodorizing filter cannot be reused even if washed In principle there is no need to replace the photocatalytic deodorizing filter Remove t...

Page 196: ...he grooves of the unit 3 places Attach the chain to the right inner side of the front grille Close the grille slowly CAUTION Units Hold the front grille firmly so that it does not fall Do not touch the metal parts on the inside of the indoor unit as it may result in injury When removing or attaching the front grille use a robust and stable stool and watch your steps carefully When removing or atta...

Page 197: ...nned with lukewarm water then dry them up in the shade It is recommended to clean the air filters every two weeks Air Purifying Filter green Replace approximately once every 3 months 1 Detach the filter element and attach a new one Insert with the green side up It is recommended to replace the air purifying filter every three months Photocatalytic Deodorizing Filter gray Maintenance 1 Dry the phot...

Page 198: ...e Operation with dusty air filters lowers the cooling heating capacity and wastes energy Air is also prevented from flowing smoothly through the unit creating a noise Operation with dirty filters 1 cannot deodorize the air 2 cannot clean the air 3 results in poor heating or cooling 4 may cause odour The air purifying filter and Photocatalytic deodorizing filter cannot be reused even if washed In p...

Page 199: ...or steam when the air conditioner is in defrost operation In COOL or DRY mode Moisture in the air condenses into water on the cool surface of outdoor unit piping and drips Mists come out of the indoor unit This happens when the air in the room is cooled into mist by the cold air flow during cooling operation The indoor unit gives out odour This happens when smells of the room furniture or cigarett...

Page 200: ...ock the air inlet or the outlet of the indoor and the outdoor units Clean the air filters or take all obstacles away and turn the breaker OFF Then turn it ON again and try operating the air conditioner with the remote controller If the lamp still flashes call the service shop where you bought the air conditioner Are operation modes all the same for indoor units connected to outdoor units in the mu...

Page 201: ...mance It is recommended to have periodical maintenance by a specialist aside from regular cleaning by the user For specialist maintenance contact the service shop where you bought the air conditioner The maintenance cost must be born by the user Call the service shop immediately After a power failure The air conditioner automatically resumes operation in about 3 minutes You should just wait for a ...

Page 202: ...i12 619A Instruction Operation Manual 189 2 2 FFQ 25 35 50 60 B 1 3 4 2 TEST C hr hr TEST NOT AVAILABLE L H 2 10 11 3 1 4 5 6 7 8 14 15 16 17 18 19 20 21 22 12 9 13 a b c d e e f g h i k e f l d j C hr H ...

Page 203: ...o 16 indoor units All indoor units are equally set Two remote controllers control system Two remote controllers control one indoor unit In case of group control system one group of indoor units The unit is individually operated NOTE Contact your Daikin dealer in case of changing the combination or setting of group control and two remote controllers control system Names and functions of parts 1 WHA...

Page 204: ...igerant dose not exceed the limiting concentration even when it leaks If the refrigerant leaks exceeding the level of limiting concentration an oxygen defi ciency accident may happen For installation of separately sold component parts ask a specialist Be sure to use the separately sold component parts designated by our company Incomplete installation performed by yourself may result in a failure a...

Page 205: ... c Where sulfured gas exists such as a hot spring resort d Where there are considerable voltage fluctuations such as a factory or plant e Vehicles and vessels f Where there is much spray of oil and vapor such as a cookery etc g Where there are machines generating electromagnetic waves h Filled with acid and or alkaline steam or vapor Is a snow protection measure taken For details consult your deal...

Page 206: ...p 8 DISPLAY SET TEMPERATURE This display shows the set temperature 9 DISPLAY FAN SPEED This display shows the set fan speed 10 DISPLAY AIR FLOW FLAP Refer to AIR FLOW DIRECTION ADJUST Refer to figure 1 on page 1 11 DISPLAY TIME TO CLEAN AIR FIL TER Refer to HOW TO CLEAN THE AIR FILTER 12 DISPLAY DEFROST Refer to DEFROST OPERATION 13 NON FUNCTIONING DISPLAY If that particular function is not availa...

Page 207: ...he heating capacity of the air conditioner declines as the outside air temperature falls In such a case use the air conditioner in combi nation with other heating systems A warm air circulating system is employed and therefore it takes some time until the entire room is warmed up after the start of operation An indoor fan runs to discharge a gentle wind automatically until the temperature inside t...

Page 208: ... timer setting procedure ends The display or changes from flash ing light to a constant light NOTE When setting the timer Off and On at the same time repeat the above procedure from 1 to 3 once again When the timer is programmed to stop the system after 3 hours and start the system after 4 hours the system will stop after 3 hours and then 1 hour later the system will start After the timer is progr...

Page 209: ...fold or staging Caution must be exercised because of work at a high place HOW TO CLEAN THE AIR FILTER Clean the air filter when the display shows TIME TO CLEAN AIR FILTER It will display that it will operate for a set amount of time Increase the frequency of cleaning if the unit is installed in a room where the air is extremely con taminated If the dirt becomes impossible to clean change the air f...

Page 210: ...tem No 2 7 Shut the suction grille Refer to item No 1 START UP AFTER A LONG STOP Confirm the following Check that the air inlet and outlet are not blocked Remove any obstacle Check if the earth is connected Might there be a broken wire somewhere Contact your dealer if there are any problems Clean the air filter and outside panels After cleaning the air filter make sure to attach it Turn on the mai...

Page 211: ...eration that corresponds to your system If the total capacity of operating indoor units exceeds the limit the indoor unit will assume the STANDBY state FAN and AIR FLOW DIREC TION will be left as set This only applies to cooling only type If another indoor unit commences a HEATING operation after this indoor unit is running in COOLING mode this indoor unit may switch to DRY operation fan on low ai...

Page 212: ...he above mentioned case and none of the above mentioned malfunctions is evident investigate the system according to the following procedures 1 If the system does not operate at all Check if there is a power failure Wait until power is restored If power failure occurs during operation the system automati cally restarts immediately after the power supply recovers Check if the fuse has blown or break...

Page 213: ...Instruction Si12 619A 200 Operation Manual ...

Page 214: ...r and Outdoor Units 221 5 10 Freeze up Protection Control 222 5 11 Outdoor Unit PCB Abnormality 224 5 12 OL Activation Compressor Overload 225 5 13 Compressor Lock 226 5 14 DC Fan Lock 228 5 15 Input Over Current Detection 229 5 16 Four Way Valve Abnormality 231 5 17 Discharge Pipe Temperature Control 233 5 18 High Pressure Control in Cooling 234 5 19 Compressor Sensor System Abnormality 236 5 20 ...

Page 215: ...scribed in the following pages Location of Operation Lamp In case of FTK X S 20 25 35 D Series FTK X S 25 35 E Series In case of FTK X S 50 60 71 F Series In case of FTK X S 50 60 71 D Series FTKS 50 60 71 B Series In case of FDK X S 25 35 50 60 C Series FDKS 25 35 E Series CDK X S 25 35 50 60 C D Series CDK X S 25 35 E Series In case of FVK X S 25 35 50 B Series In case of FLK X S 25 35 50 B Seri...

Page 216: ...ormal If the lamp stops blinking after the above steps there is no malfunction Operation stops and operation lamp blinks only for indoor unit which the different operation mode is set later The first set operation mode has priority Troubleshooting with the LED Indication Outdoor Unit There are green and red LEDs on the PCB The flashing green LED indicates normal equipment condition and the OFF con...

Page 217: ...osis with indoor unit LED indication 209 Diagnosis with outdoor unit LED indication 210 Some indoor units do not operate Check the type of the indoor units Check to make sure that the indoor unit type is compatible with the outdoor unit Diagnosis with indoor unit LED indication 209 Diagnosis with outdoor unit LED indication 210 Equipment operates but does not cool or does not heat only for heat pu...

Page 218: ...ndicate non corresponding codes 2 To cancel the code display hold the timer cancel button down for 5 seconds The code display also cancels itself if the button is not pressed for 1 minute No Code No Code No Code 1 00 12 C7 23 H0 2 U4 13 H8 24 E1 3 F3 14 J3 25 P4 4 E6 15 A3 26 L3 5 L5 16 A1 27 L4 6 A6 17 C4 28 H6 7 E5 18 C5 29 H7 8 F6 19 H9 30 U2 9 C9 20 J6 31 UH 10 U0 21 UA 32 EA 11 E7 22 A5 33 AH...

Page 219: ...k 2 Press the TEMP button Press TEMP or TEMP and change the digit until you hear the sound of beep or pi pi 3 Diagnose by the sound pi The number of tens does not accord with the error code pi pi The number of tens accords with the error code beep The both numbers of tens and units accord with the error code See 7 4 Enter the diagnosis mode again Press the MODE button The digit of the number of un...

Page 220: ...oth numbers of tens and units do not accord with the error code pi pi The number of tens accords with the error code beep The both numbers of tens and units accord with the error code 7 Determine the error code The digits indicated when you hear the beep sound are error code Error codes and description Refer to page 208 8 Exit from the diagnosis mode Press the MODE button R4277 R4278 ...

Page 221: ... Shutter drive motor shutter limit switch abnormality C9 Room temperature thermistor abnormality Outdoor Unit A5 Freeze up protection control E1 Outdoor unit PCB abnormality E5 OL activation compressor overloaded E6 Compressor lock E7 DC fan lock E8 Input over current detection EA Four way valve abnormality F3 Discharge pipe temperature control F6 High pressure control in cooling H0 Compressor sen...

Page 222: ...iagnosis of the outdoor unit A1 Indoor unit PCB abnormality 211 A5 Freeze up protection control or high pressure control heat pump model only 212 A6 Fan motor or related abnormality AC motor 214 DC motor 215 C4 Heat exchanger thermistor or related abnormality 217 C7 Shutter drive motor shutter limit switch abnormality 218 C9 Room temperature thermistor abnormality 217 U4 Signal transmission error ...

Page 223: ...ltage between indoor and outdoor units 259 UH Anti icing function in other rooms 259 5 3 3 4 4 U0 Insufficient gas 253 5 4 3 3 4 U2 Low voltage detection or over voltage detection 257 5 3 4 4 4 U7 Signal transmission error on outdoor unit PCB 258 5 4 3 4 4 A5 Freeze up protection control 222 5 4 4 4 3 E1 Outdoor unit PCB abnormality 224 5 4 3 4 3 E5 OL activation compressor overload 225 5 3 4 4 3 ...

Page 224: ... unit PCB Faulty connector connection Troubleshooting Note Connector Nos vary depending on models Control connector Connector connection check note YES Is it normal NO Correct connections Replace PCBs R1400 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Model Type Connector No Wall Mounted Type Terminal strip Control PCB Duct Connect...

Page 225: ...n according to the temperature detected by the indoor unit heat exchanger thermistor Malfunction Decision Conditions High pressure control During heating operations the temperature detected by the indoor heat exchanger thermistor is above 65 C Freeze up protection When the indoor unit heat exchanger temperature is below 0 C during cooling operation Supposed Causes Operation halt due to clogged air...

Page 226: ...cumulation on the indoor unit heat exchanger YES YES Is there any short circuit Is it very dirty Is it very dirty Does it conform to the thermistor characteristic chart NO Provide sufficient air passage Clean the air filter Clean the heat exchanger Replace the indoor unit PCB Replace the thermistor replace the indoor unit PCB Caution Be sure to turn off power switch before connect or disconnect co...

Page 227: ...r of the fan motor Detection error due to faulty control PCB Troubleshooting Check No 16 Refer to P 269 Rotate the fan by hand Check No 16 Check Hall IC Operate the fan Does it rotate NO Does it rotate smoothly Is there an output Is it at the rated voltage Is there conductivity NO Check the capacitor s conductivity Check the fan motor voltage immediately after re start Is it at the rated voltage C...

Page 228: ...Conditions When the detected rotation speed does not reach the demanded rotation speed of the target tap and is less than 50 of the maximum fan motor rotation speed Supposed Causes Operation halt due to short circuit inside the fan motor winding Operation halt due to breaking of wire inside the fan motor Operation halt due to breaking of the fan motor lead wires Operation halt due to faulty capaci...

Page 229: ...put of fan motor connector Is motor power voltage DC 200V generated Is motor control power voltage DC 15V generated Turn off power supply and disconnect fan motor connector then turn power ON again Does it rotate Stop fan motor Is rotation number command pulse generated Is rotation number command pulse generated Check No 01 Check output of fan motor connector Check No 01 Check output of fan motor ...

Page 230: ...han 120 ohms or below about 50 C more than 1 860 kohms Note The values vary slightly in some models Supposed Causes Faulty connector connection Faulty thermistor Faulty PCB Troubleshooting Check No 06 Refer to P 263 C4 Indoor heat exchanger thermistor C9 Room temperature thermistor Check the connector connection YES Correct the connection Replace the thermistor Replace the indoor unit PCB Replace ...

Page 231: ...relay harness or disconnected connector Detection error due to defective PCB 2 Foreign substance in blow port Troubleshooting Check No 03 Refer to P 260 Turn off the power Check No 03 Check the limit switch continuity Remove such substance Replace the limit switch Reconnect the connector or replace the relay harness Replace the shutter drive motor or the PC board 2 Check the shutter s sealing mate...

Page 232: ...When the data sent from the outdoor unit cannot be received normally or when the content of the data is abnormal Supposed Causes Faulty outdoor unit PCB Faulty indoor unit PCB Indoor unit outdoor unit signal transmission error due to wiring error Indoor unit outdoor unit signal transmission error due to disturbed power supply waveform Indoor unit outdoor unit signal transmission error due to break...

Page 233: ...l PCB Locate the cause of the disturbance of the power supply waveform and correct it Is there any wiring error NO R6471 Is LED A flashing Is the voltage 0 V NO Check No 10 Check power supply waveform Check the voltage of the indoor unit outdoor unit connection wires between No 1 and No 2 and between No 2 and No 3 YES YES NO Is there any disturbance NO Caution Be sure to turn off power switch befo...

Page 234: ... Wrong models interconnected Wrong indoor unit PCB mounted Indoor unit PCB defective Wrong outdoor unit PCB mounted or defective Troubleshooting Check the indoor and outdoor unit model numbers Match the compatible models Change for the specified PCB 1 or 2 Replace the indoor unit PCB or the outdoor unit PCB R6954 Caution Be sure to turn off power switch before connect or disconnect connector or pa...

Page 235: ...n the cooling mode the following conditions A and B are kept together for 5 minutes A Indoor unit heat exchanger temperature 1 C B Indoor unit heat exchanger temperature Room temperature 10 C If the freeze up protection control is activated 4 times continuously the system will be shut down The 4 time counter will reset itself if any of the following errors does not occur for 60 minutes OL radiatio...

Page 236: ...changer thermistor Do the vacuum drying Replace the indoor unit PCB and then start the wiring error check mode R4715 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Wiring or piping out of spec YES NO NO YES NO YES NO YES YES NO Error again Motor functioning Thermistor as specified in its characteristic chart Thermistor as specified i...

Page 237: ...is in abnormal running order Supposed Causes Out of control of microcomputer caused by external factors z Noise z Momentary fall of voltage z Momentary power loss Defective outdoor unit PCB Troubleshooting Replace the outdoor unit PCB Carry out grounding work The cause can be external factors other than malfunction Investigate the cause of noise R5142 Caution Be sure to turn off power switch befor...

Page 238: ... valve defective Troubleshooting Check No 04 Refer to P 261 Check No 05 Refer to P 262 Check No 06 Refer to P 263 Check No 11 Refer to P 266 Insert the thermistor in position Replace the discharge pipe thermistor Replace the valve itself or the coil Replace the four way valve coil or the valve itself Replace the outdoor unit PCB Refer to the refrigerant line check procedure R4697 Caution Be sure t...

Page 239: ...he system will be shut down if the error occurs 16 times Clearing condition Continuous run for about 5 minutes normal Supposed Causes Compressor locked Troubleshooting Turn off the power Disconnect the harnesses U V and W Inverter checker Part No 1225477 Correct the power supply or replace the SPM Replace the outdoor unit PCB Replace the compressor Check the electronic expansion valve Replace it a...

Page 240: ...ous run for about 5 minutes normal Supposed Causes Compressor locked Troubleshooting Turn off the power Disconnect the harnesses U V and W Inverter checker Part No 1225477 Correct the power supply or replace the PM1 Replace the outdoor unit PCB Replace the compressor Check the electronic expansion valve Replace it as required Replace the compressor R5143 Caution Be sure to turn off power switch be...

Page 241: ...dition Continuous run for about 5 minutes normal Supposed Causes Fan motor breakdown Harness or connector disconnected between fan motor and PCB or in poor contact Foreign matters stuck in the fan Troubleshooting Check No 15 Refer to P 268 Turn off the power and reconnect the connector Remove Replace the outdoor unit fan motor Replace the outdoor unit PCB R2843 Caution Be sure to turn off power sw...

Page 242: ...ons The input current is a certain value depending on the model or over for 2 5 seconds The compressor halts if the error occurs and restarts automatically after 3 minutes stand by Supposed Causes Over current due to compressor failure Over current due to defective power transistor Over current due to defective inverter main circuit electrolytic capacitor Over current due to defective outdoor unit...

Page 243: ...ing above its stop level NO YES Normal NO YES Any LED off YES NO Check with the inverter checker Turn off the power and reconnect the harnesses Turn on the power again and get restarted Turn off the power and disconnect the harnesses U V and W Get restarted and measure the input current Check No 08 Check the discharge pressure Check No 07 Check the installation condition Check No 14 Check the main...

Page 244: ...thin their normal ranges in the operating mode Malfunction Decision Conditions Either of the following conditions occurs 6 minutes after the compressor has started Cooling dry operation Outdoor unit heat exchanger temperature Liquid pipe temperature 5 C Heating operation Liquid pipe temperature Outdoor unit heat exchanger temperature 0 C Supposed Causes Connector in poor contact Thermistor defecti...

Page 245: ...turn off power switch before connect or disconnect connector or parts damage may be occurred Four way valve coil disconnected loose YES YES NO Functioning NO Check No 11 Check the refrigerant line Malfunctioning z Water mixed z Shut off valve defective Harness out of connector NO YES Disconnect the harness from the connector Resistance between harnesses about 1500 ohms Malfunctioning Functioning C...

Page 246: ...nding If the compressor stops 6 times straight due to abnormal discharge pipe temperature the system will be shut down The error counter will reset itself if this or any other error does not occur during the following 60 minute compressor running time total time Supposed Causes Refrigerant shortage Four way valve malfunctioning Discharge pipe thermistor defective heat exchanger or outdoor temperat...

Page 247: ...perature being sensed by the heat exchanger thermistor exceeds the limit Malfunction Decision Conditions Activated when the temperature being sensed by the heat exchanger thermistor rises above 65 C The error is cleared when the temperature drops below 50 C Supposed Causes The installation space is not large enough Faulty outdoor unit fan Faulty electronic expansion valve Faulty outdoor unit heat ...

Page 248: ...r the connector or fan motor lead wires Replace the heat exchanger thermistor Replace PCB Replace the electronic expansion valve or coil Replace the PCB Change the air outlet grille position Change the installation location Clean the heat exchanger Check the installation space Check No 09 Outdoor fan check Judgment Check No 06 Heat exchanger thermistor check Judgment Check No 07 Installation condi...

Page 249: ...DC voltage which is detected before the compressor startup Fault condition is identified by compressor current which is detected right after the compressor startup Malfunction Decision Conditions The detected valve of the supply voltage and the DC voltage is obviously low or high The compressor current doesn t run when the compressor is started Supposed Causes Reactor disconnection Compressor disc...

Page 250: ...en all each terminal 10Ω or less NO YES Turn off the power Reactor check Compressor check Reactor connection check Compressor connection check Disconnect the reactor from the outdoor unit PCB and measure the resistance value between reactor terminals with tester Disconnect the compressor relay harness from the outdoor unit PCB and measure the resistance value between the terminals of the each 3 co...

Page 251: ...ssor relay cable disconnected Compressor itself defective Outdoor unit PCB defective Stop valve closed Input voltage out of specification Troubleshooting Check No 13 Refer to P 267 Replace the outdoor unit PCB outdoor unit fan Replace the outdoor unit PCB Reconnect as specified Inverter checker Part No 1225477 Correct the power supply or replace the outdoor unit PCB Replace the compressor R5145 Ca...

Page 252: ...ssor running frequency is below Hz and the CT input is below 0 1 V The input current is also below A If this error repeats 4 times the system will be shut down The error counter will reset itself if this or any other error does not occur during the following 60 minute compressor running time total time Supposed Causes Power transistor defective Internal wiring broken or in poor contact Reactor def...

Page 253: ...r switch before connect or disconnect connector or parts damage may be occurred Running current as shown at right with relay cable 1 or 2 YES Current guideline 2 sec Time Rising with increasing frequency Capacitor charged when the indoor unit or outdoor unit main relay turns on NO NO DC320 30V YES Voltage within the allowable range Supply voltage 15 YES NO Any LED off Compressor running YES NO YES...

Page 254: ...istor Malfunction Decision Conditions When the thermistor input is above 4 96 V or below 0 04 V with the power on the J3 error is judged if the discharge pipe thermistor temperature is smaller than the condenser thermistor temperature or the system will be shut down if all the units are judged with the J8 error Supposed Causes Connector in poor contact Thermistor defective Outdoor unit PCB defecti...

Page 255: ...he following thermistor z Indoor unit heat exchanger thermistor Replace the outdoor unit PC board Replace the indoor unit PC board R4718 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Error displayed again on remote controller NO YES YES YES NO Indoor unit heat exchanger thermistor functioning NO Connector or thermistor disconnected ...

Page 256: ...x temperature rise is detected by checking the radiation fin thermistor with the compressor off Malfunction Decision Conditions With the compressor off the radiation fin temperature is above 80 C The error is cleared when the temperature drops below 70 C Supposed Causes Fin temperature rise due to defective outdoor unit fan Fin temperature rise due to short circuit Fin thermistor defective Connect...

Page 257: ...aution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Error again or outdoor unit fan activated YES z Fin thermistor NO Slightly dirty Check No 09 Check the outdoor unit fan or related Malfunctioning Radiation fin dirty Too dirty Functioning Thermistor as specified in its characteristic chart Above 80 C NO YES NO YES Check the radiation fin ...

Page 258: ... checking the radiation fin thermistor with the compressor off Malfunction Decision Conditions With the compressor off the radiation fin temperature is above 100 C The error is cleared when the temperature drops below 85 C 52 58 class or 70 C 80 100 class Supposed Causes Fin temperature rise due to defective outdoor unit fan Fin temperature rise due to short circuit Fin thermistor defective Connec...

Page 259: ...r switch before connect or disconnect connector or parts damage may be occurred Error again or outdoor unit fan activated YES NO Slightly dirty Check No 09 Check the outdoor unit fan or related Malfunctioning Radiation fin dirty Too dirty Functioning Above 100 C NO YES Check the radiation fin temperature Check No 07 Check the installation condition WARNING To cool down the electricals the outdoor ...

Page 260: ...ture with the compressor on is above 90 C The error is cleared when the temperature drops below 85 C If a radiation fin temperature rise takes place 255 times successively the system will be shut down The error counter will reset itself if this or any other error does not occur during the following 60 minute compressor running time total time Supposed Causes Fin temperature rise due to defective o...

Page 261: ... the power transistor and fin for looseness If they are found to be fit tightly replace the PCB or the power transistor Replace the fan motor Correct the connectors and fan motor leads Replace the outdoor unit PCB Clean up the radiation fin R7097 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Error displayed again YES NO Slightly dir...

Page 262: ...lass or 105 C 80 100 class The error is cleared when the temperature drops below 95 C 52 58 class or 97 C 80 100 class If a radiation fin temperature rise takes place 255 times successively the system will be shut down The error counter will reset itself if this or any other error does not occur during the following 60 minute compressor running time total time Supposed Causes Fin temperature rise ...

Page 263: ... Replace the outdoor unit PCB Clean up the radiation fin R7107 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Error displayed again NO Slightly dirty Check No 09 Check the outdoor unit fan or related Malfunctioning Radiation fin dirty Too dirty Functioning Above 103 C or 105 C depending on the model NO YES Check the radiation fin tem...

Page 264: ...s while the compressor is running An output over current input is fed from the output over current detection circuit to the microcomputer The system will be shut down if the error occurs 16 times Clearing condition Continuous run for about 5 minutes normal Supposed Causes Over current due to defective power transistor Over current due to wrong internal wiring Over current due to abnormal supply vo...

Page 265: ... the wires have been disconnected and reconnected for part replacement for example and the system is interrupted by an output over current take the following procedure Error again NO YES NO YES Voltage as rated YES NO Short circuit or breakage between compressor s coil phases NO YES Normal YES NO Any LED off Turn off the power and turn it on again to get the system started See if the same error oc...

Page 266: ... 7 minutes Input current input voltage 1756 256 output frequency 50 W Output frequency 55 Hz Gas shortage detection II The following conditions continue for 80 seconds Target opening of the electronic expansion valve 450 pulse Cooling discharge temperature 255 256 target discharge temperature 20 C Heating discharge temperature 255 256 target discharge temperature 40 C If a gas shortage error takes...

Page 267: ... exchanger thermistor 1 Replace the PCB 2 Replace the compressor Procedure complete R4719 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Any thermistor disconnected YES Malfunctioning Malfunctioning NO Functioning Stop valve closed NO YES Check the CT YES NO Gas shortage error again Functioning Check No 06 Check the thermistors YES N...

Page 268: ...or 7 minutes DC current 0 01 output frequency 0 3 Output frequency 55 Hz Gas shortage detection II The following conditions continue for 80 seconds Target opening of the electronic expansion valve 450 pulse Cooling discharge temperature 255 256 target discharge temperature 20 C Heating discharge temperature 255 256 target discharge temperature 40 C If a gas shortage error takes place 4 times strai...

Page 269: ...it heat exchanger thermistor 1 Replace the PCB 2 Replace the compressor Procedure complete R5150 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Any thermistor disconnected YES Malfunctioning NO Stop valve closed NO YES YES NO Gas shortage error again Functioning Check No 06 Check the thermistors YES NO Oil oozing at internal piping N...

Page 270: ... occurs 16 times Clearing condition Continuous run for about 60 minutes normal Supposed Causes Supply voltage not as specified Over voltage detector or DC voltage detection circuit defective PAM control part s defective Troubleshooting Check the supply voltage Correct the power supply Check for such factors for a long term Try to get restarted a couple of times Replace the SPM or PM1 Replace the o...

Page 271: ... can not be received successively for 9 sec The abnormality is determined if the above fault conditions occurs once Fault counter is reset when the data from the PM1 can be successfully received Supposed Causes Defective outdoor unit PCB Troubleshooting Replace the outdoor unit PCB The cause can be an external factor other than the malfunction Monitor in long term R5152 Caution Be sure to turn off...

Page 272: ...tion halt due to unspecified internal and or external voltages Operation halt due to mismatching of indoor and outdoor units Supposed Causes Operation halt due to the anti icing function in other rooms Wrong connections at the indoor unit PCB wrongly connected Troubleshooting Check the model name The freeze protection function is activated in other rooms Refer to A5 Correct Reconnect R3066 Caution...

Page 273: ...embly Check the continuity of the switch connection The shutter can be opened and closed with hand Keep the shutter open and closed all the way for each continuity check steps 7 6 5 4 3 2 1 Motor power supply voltage Unused Unused P 0V reference potential Motor control voltage 15 VDC Rotation command voltage 1 5 VDC Rotation pulse input S1 or S301 8 7 6 5 4 3 2 1 Motor power supply voltage Unused ...

Page 274: ...the no operation unit Flow noise of refrigerant in the no operation unit Operation halt due to icing protection Heating The unit does not heat Refrigerant flow rate vary by unit Discharge air temperatures are different by room Peak cut Reset power supply and conduct cooling operation unit by unit 2 Valve body catches at complete close position Symptom Cooling The only unit having problem does not ...

Page 275: ...nit PCB Replace the four way valve coil Replace the four way valve R2856 NO Four way valve coil Cooling dry No continuity Heating Continuity YES YES Four way valve coil resistance at 1500 ohms NO S80 voltage at DC 220 240 V with compressor on Fig 1 Disconnect the four way valve coil from the connector and check the continuity Fig 1 Voltage at S80 DC220 240V ON Compressor Time ...

Page 276: ...rs on the PCB and measure the resistance of each thermistor using tester The relationship between normal temperature and resistance is shown in the graph and the table below Thermistor R25 C 20kΩ B 3950 Temperature C 20 211 0 kΩ 15 150 10 116 5 5 88 0 67 2 5 51 9 10 40 15 31 8 20 25 25 20 30 16 35 13 40 10 6 45 8 7 50 7 2 ...

Page 277: ...ger Change the installation location or direction Check the outside air temperature temperature of air taken in by the outdoor unit The outside air temperature shall be 46 C or lower Check the allowable dimensions of the air suction and discharge area Is the air flow blocked by obstacles or winds blowing in the opposite direction R3048 Abnormal YES YES YES Does the discharged air from other outdoo...

Page 278: ...op valve Replace the pipe installed at the site Clean Replace the compressor R1443 YES YES YES NO NO NO NO At the heat exchanger and air filter dirty Is the stop valve open Is the connection pipe deformed YES High Check the outdoor unit fan system Reconnect R2857 Outdoor unit fan running YES Fan motor lead wire connector disconnected YES NO NO Outdoor unit fan system functioning Go to Check No 15 ...

Page 279: ...eform disturbance near the zero cross sections circled in Fig 2 6 1 10 Inverter Units Refrigerant System Check Check No 11 Fig 1 Fig 2 Refrigerant system check Check for gas leaks See the section on insufficient gas detection Conduct the check after operating the equipment for a sufficient length of time Correct the problem Conduct vacuum drying Replace the refrigerant Is the discharge thermister ...

Page 280: ...ing the tester z For the UVW make measurements at the Faston terminal on the board or the relay connector MULTIMETER DC VOLTAGE RANGE REACTOR LEAD WIRE COMPRESSOR LEAD WIRE OL LEAD WIRE THERMISTOR LEAD WIRE FAN MOTOR LEAD WIRE R6335 ROOM D ROOM C ROOM B ROOM A ELECTRONIC EXPANSION VALVE COIL LEAD WIRE THERMISTOR LEAD WIRE GAS PIPE THERMISTOR LEAD WIRE LIQUID PIPE THERMISTOR LEAD WIRE GAS PIPE THER...

Page 281: ...plied 1 Stop the operation first and then the power and disconnect the connector S70 2 Make sure there is about DC 320 V between pins 4 and 7 3 With the system and the power still off reconnect the connector S70 4 Make a turn of the fan motor with a hand and make sure the pulse 0 15 V appears twice at pins 1 and 4 If the fan motor protection fuse is blown out the outdoor unit fan may also be in tr...

Page 282: ...nnected check the following Output voltage of about 5 V between pins 1 and 3 Generation of 3 pulses between pins 2 and 3 when the fan motor is operating Failure of 1 Æ faulty PCB Æ Replace the PCB Failure of 2 Æ faulty Hall IC Æ Replace the fan motor Both 1 and 2 result Æ Replace the PCB The connector has 3 pins and there are two patterns of lead wire colors ...

Page 283: ...Check Si12 619A 270 Service Diagnosis ...

Page 284: ... 75 Class D Series 303 2 1 Removal of the Outer Panels 303 2 2 Removal of the Electrical BOX 304 2 3 Removal of the PCB 308 2 4 Removal of the Fan Motor 311 2 5 Removal of the Sound Blanket 312 2 6 Removal of the Four Way Valve Coil Solenoid Valve Coil Electronic Expansion Valve Coil and Thermistor 313 2 7 Removal of the Four Way Valve Solenoid Valve and Shunt 315 2 8 Removal of the Solenoid Valve...

Page 285: ...Removal of the Panels and Plates Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 External appearance Take care not to cut your finger by the fins of the heat exchanger 2 Loosen the 4 screws 2 on both sides of the top panel ...

Page 286: ...front panel 4 Loosen the 2 screws each one in front and back of the clamp plate 5 Slide the clamp plate to the left to undo the hooks and remove the plate 6 Undo the upper 2 hooks to remove the front panel Align the position of hole of the upper hook to pull the front panel out Step Procedure Points ...

Page 287: ... 58 Class Si12 619A 274 Removal Procedure 7 Lift the front panel up to remove the left side hooks and open the panel 8 The front panel has the 3 hooks on the left 9 The front panel has the hook on the right Step Procedure Points ...

Page 288: ...door Unit E Series 50 52 58 Class Removal Procedure 275 10 Loosen the 4 screws of the discharge grille 11 Loosen the 2 screws of the stop valve cover And then slide the cover downward to remove Step Procedure Points ...

Page 289: ...Outdoor Unit E Series 50 52 58 Class Si12 619A 276 Removal Procedure When assembling make sure to catch the 5 hooks Step Procedure Points ...

Page 290: ...f all power supplies before disassembling work Step Procedure Points 1 Disconnect the connecting wires Illustrations are for 3 room model 1 Inside structure 2 Disconnect the connecting wires Connecting wires of the A B C D port 1 Black Power supply 2 White Power supply 3 Red Transmission Power Supply wires L Black N White Fasten the wires on the terminal board with screws ...

Page 291: ...connect the each harnesses 1 Detach the fixing tape for the electrical box cover 2 Undo the 4 hooks at the mark of the drip proof cover 3 Lift the cover up to remove 4 Disconnect the connector for fan motor S70 from the PCB Check the LED through the slit Step Procedure Points ...

Page 292: ...he arrangement of the wire harness for fan motor 6 Disconnect the connectors for electronic expansion valve coil S20 White S21 Red S22 Blue S23 Yellow The number of the connectors are different according to the number of the connected indoor units 7 Undo the wire clip Step Procedure Points ...

Page 293: ...Disconnect the connector for overload protector S40 9 Disconnect the connector for relay harness of compressor 10 Disconnect the each connector S90 Outdoor air heat exchanger discharge pipe thermistor S92 Gas pipe thermistor S93 Liquid pipe thermistor Step Procedure Points ...

Page 294: ...2 58 Class Removal Procedure 281 11 Disconnect the connector for four way valve S80 12 The figure shows the arrangement of the wire harness under the electrical box 13 Undo the wire clip for the thermistor lead wire Step Procedure Points ...

Page 295: ...282 Removal Procedure 3 Remove the electrical box 1 Loosen the 2 screws of the earth terminal 4 Disconnect the power supply connecting wires 1 Loosen the screws on the terminal board and disconnect the wires of A B C and D port Step Procedure Points ...

Page 296: ...2 58 Class Removal Procedure 283 2 Detach the outdoor air thermistor 3 Loosen the screw on the right side of the electrical box 4 Loosen the screw in front of the electrical box 5 Lift up the electrical box to remove Step Procedure Points ...

Page 297: ... to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the service PCB 1 External appearance of the service PCB and the terminal board 2 Loosen the one screw of the terminal board and open it 3 Disconnect the connector S52 and S102 from the service PCB ...

Page 298: ...ervice PCB upward to remove 2 Remove the control PCB 1 Disconnect the each connectors on the terminal board 2 Disconnect the 2 connectors for reactor The PCB is down side up for improvement of quality Service monitor LED A Check the LED through the slit 3 Loosen the 3 screws of the PCB Step Procedure Points ...

Page 299: ...elay harness for compressor from the hook 6 Lift up the control PCB to remove In working be careful not to break the control PCB with the excessive force because the PCB and the radiation fin are adhered to one another When assembling make sure to use the silicon material Silicon material Part No 1172698 7 Each wire harness Step Procedure Points ...

Page 300: ...Unit E Series 50 52 58 Class Removal Procedure 287 8 Names of parts on the control PCB 9 Loosen the 2 screws of the radiation fin 10 Loosen the 3 screws of the reactor and the one screw of the clamp Step Procedure Points ...

Page 301: ...tdoor Unit E Series 50 52 58 Class Si12 619A 288 Removal Procedure 3 Disconnect the wire harnesses 4 Remove the terminal board 1 Open the electrical box and remove the terminal board Step Procedure Points ...

Page 302: ...Si12 619A Outdoor Unit E Series 50 52 58 Class Removal Procedure 289 Step Procedure Points ...

Page 303: ...ing work Step Procedure Points 1 Remove the fan motor fixing plate Remove the outer panels and plates Remove the electrical box 2 Take out the fan motor fixing plate toward yourself When assembling fit the lower hooks 3 Loosen the washer fitted nut to remove the propeller fan When assembling align mark of the propeller fan with D cut section of the motor shaft When assembling make sure z mark of t...

Page 304: ...ixing hooks of the lead wire Loosen the 4 screws of the fan motor When assembling put the lead wire through the back of the motor so as not to be entangled with the propeller fan 5 Detach the 4 screws and 4 rubber vibration isolators Step Procedure Points R3249 Lead wire Propeller fan ...

Page 305: ... 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the right side panel Remove the outer panels and plates Remove the electrical box 1 Loosen the 3 screws on the right of the right side panel 2 Loosen the 2 screws on the back 3 Remove the packing There is a hook on the back ...

Page 306: ...al Procedure 293 4 Pull up the right side panel 5 Loosen the 2 screws of the wiring fixture 2 Remove the partition plate 1 Loosen the 2 screws to remove the partition plate 2 Detach the clamp of the relay harness for the compressor Step Procedure Points ...

Page 307: ... the partition plate When assembling make sure to catch the lower hook of the partition plate 3 Remove the sound blanket Since the piping ports on the sound blanket are torn easily remove the blanket carefully 1 Lift up the sound blanket top upper to remove Step Procedure Points ...

Page 308: ...t E Series 50 52 58 Class Removal Procedure 295 2 Remove the sound blanket top lower 3 Undo the fixing strings open the sound blanket body and pull it out 4 Open the sound blanket inner and pull it out Step Procedure Points ...

Page 309: ...l and Thermistor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the electronic expansion valve coil 1 Remove the each electronic expansion valve coil 2 Remove the four way valve coil 1 Loosen the screw to remove the four way valve coil ...

Page 310: ...ty and remove the liquid pipe thermistor S90 Outdoor air thermistor Heat exchanger thermistor Discharge pipe thermistor S92 Gas pipe thermistor Room A Black Room B Gray Room C Brown Room D Red S93 Liquid pipe thermistor Room A Black Room B Gray Room C Yellow Room D Blue 2 Open the putty and remove the gas pipe thermistor 4 Remove the heat exchanger thermistor 1 Remove the heat exchanger thermistor...

Page 311: ...thermistor Meet the edge of the thermistor and clip Be careful not to loose the clip for the discharge pipe thermistor 1 Undo the clip and remove the discharge pipe thermistor 6 Remove the assembly of thermistor 1 The figure shows the arrangement of the assembly of thermistor Step Procedure Points ...

Page 312: ...ts 1 Remove the putty Warning Ventilate when refrigerant leaks during the work If refrigerant contacts fire it will cause to arise toxic gas Caution Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas welding rod Caution From the viewpoint of global environment protection do not discharge the refrigerant gas in the atmosphere Make sure to recover the refr...

Page 313: ...ay valve with wet cloth and provide water so that the cloth will not be dried and avoid excessive heating Keep below 120 C Be careful so as not to break the pipes by pressing it excessively by pliers when withdrawing it In case of the difficulty with gas brazing machine 1 Disconnect the brazed part where is easy to disconnect and restore 2 Cut pipes on the main unit by a miniature copper tube cutt...

Page 314: ... or the name plate Warning Since it may happen that refrigeration oil in the compressor will catch fire prepare wet cloth so as to extinguish fire immediately Warning Ventilate when refrigerant leaks during the work If refrigerant contacts fire it will cause to arise toxic gas Caution Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas welding rod 1 Remov...

Page 315: ...as 6 There is one nut fixing the compressor Remove the nut with an open end spanner Before working make sure that the refrigerant is empty in the circuit Be sure to apply nitrogen replacement when heating up the brazed part 7 Heat up the brazed part of the discharge side and disconnect part a 8 Heat up the brazed part of the suction side and disconnect part b 9 Lift the compressor up to remove Ste...

Page 316: ...val of the Outer Panels Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 External appearance 2 Remove 4 screws of the top panel and 6 screws of the front panel 3 Remove 4 screws of the discharge outlet grill 4 Remove 2 screws of the piping cover ...

Page 317: ... disassembling work Step Procedure Points 1 Removing the tie wires Remove the piping in the backward direction 1 The figure shows the tie pipe connections 2 Remove the terminal board fitting screw Match the colours of the tie wires to A B C and D ports as follows 1 Black Power 2 White Power 3 Red Transmission Wires are fixed to the terminal board with screws Terminal board is made of integral moul...

Page 318: ...wire to the correct connector 1 Disconnect 4 connectors of the electronic expansion valve lead wires 2 Remove the four way valve connector S80 3 Disconnect the thermistor connector and the overload relay connector S40 Overload relay S90 Thermistor Outdoor air heat exchanger discharge pipe S92 Gas pipe thermistor S93 Liquid pipe thermistor Step Procedure Points Connector Electronic expansion valve ...

Page 319: ...06 Removal Procedure 4 Disconnect the compressor relay connector 5 Remove the reactor lead wire 3 Removing the wiring fixture 1 Remove 6 screws of the wiring fixture 4 Removing the electrical box 1 Remove one screw of the electrical box Step Procedure Points ...

Page 320: ...Series 68 71 75 Class D Series Removal Procedure 307 2 Remove the screw of the electrical box 3 Remove the drip proof cover 4 Disconnect the fan motor lead wire 5 Lift up the electrical box and dismount it Step Procedure Points ...

Page 321: ...all power supplies before disassembling work Step Procedure Points 1 Removing the controller PCB 1 Remove the screw of the PCB and release 2 tabs 2 Release the tabs of the terminal board and open the terminal board 3 Disconnect each connector on the back of the terminal board 4 Disconnect the service monitor PCB connector Release the tab to remove the service monitor PCB ...

Page 322: ... 68 71 75 Class D Series Removal Procedure 309 5 Lift up the control PCB 6 Disconnect each wire harness connector linked to the control PCB S31 Pin 9 To CN14 S32 Pin 5 To CN11 S33 Pin 10 To S34 S71 Pin 8 To S72 Step Procedure Points ...

Page 323: ... 619A 310 Removal Procedure 7 The figure shows the control PCB Glass tube fuse 3A 2 Removing the service monitor PCB 1 The figure shows the service monitor PCB 3 Removing the inverter PCB 1 Remove the 7 screws of the inverter PCB Step Procedure Points ...

Page 324: ...tor lead wire connector For reassembling align mark of propeller fan with D cut section of motor shaft Mount the propeller fan while positioning Q mark to the top 1 Remove the propeller fan by removing the washer fitted nut 2 Remove the fan motor Remove the screw of the fan motor mount When reassembling fix the lead wire to avoid contact with the propeller fan 3 Disconnect the lead wire by releasi...

Page 325: ...und Blanket Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove 5 screws of the right side panel 2 Remove 2 screws of the partition board and remove the board 3 Remove the sound blanket top outer and inner ...

Page 326: ...f all power supplies before disassembling work Step Procedure Points 1 Remove the screw of the four way valve coil 2 Remove the screw of the solenoid valve coil 3 Remove the electronic expansion valve coil for each room Place the thermistor so that its end comes up to the end of the presser spring 4 Release the thermistor presser spring and remove the discharge pipe thermistor Be careful not to lo...

Page 327: ...the presser spring Be careful not to lose the presser spring for the discharge pipe thermistor 6 Remove the wire harness S90 Outdoor air thermistor Blue Heat exchanger thermistor Gray Discharge pipe thermistor Black S92 Gas pipe thermistor Room A Black Room B Gray Room C Brown Room D Red S93 Liquid pipe thermistor Room A Black Room B Gray Room C Yellow Room D Blue Step Procedure Points ...

Page 328: ... below 120 C In pulling the pipes be careful not to over tighten them with pliers The pipes may get deformed If the gas welding machine fails to remove the four way valve take the steps below 1 Disconnect the brazed pipe sections that are readily easy to separate and join together later 2 With a small copper tube cutter cut off the internal pipes to easily take out the four way valve Note Never us...

Page 329: ...on Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas welding rod Warning If refrigerant gas leaks during the job ventilate the room Bear in mind that if the refrigerant gas is exposed to open flames noxious gas may be generated Reassembling precautions Wrap the solenoid valve body with wet cloth Splash water over the cloth before it is dried to prevent ...

Page 330: ...an open end spanner Make sure there is no refrigerant gas left inside the refrigerant pipes before starting the job When heating up the brazed parts make sure to carry out the N2 replacement Warning The compressor s refrigerating machine oil may catch fire Have wet cloth at hand for quickly putting out the fire Warning If refrigerant gas leaks during the job ventilate the room Bear in mind that if...

Page 331: ...nutes or more after turning off all power supplies before disassembling work Step Procedure Points External appearance from front side The illustrations can be different depending on the models 1 Removing the suction grille The hooks are secured in the clearances of the heat exchanger fins 1 Undo the 2 hooks at the bottom first R6368 Hooks Rear side R6369 Suction grille R6370 ...

Page 332: ... Removal Procedure 319 2 Next slide the grille downward to undo the 3 top hooks 3 Remove the suction grille 2 Removing the top panel 1 Remove the 4 screws on the back and one screw on the left side panel Step Procedure Points Hooks R6371 R6372 R6373 ...

Page 333: ...ss Si12 619A 320 Removal Procedure 2 Remove the 2 screws on the front and one screw on the right side panel 3 Lift the top panel and remove it 3 Removing the right side panel 1 Remove the 5 screws Step Procedure Points R6374 R6375 R6376 ...

Page 334: ...i12 619A Outdoor Unit E Series 80 90 100 Class Removal Procedure 321 2 Slide the panel downward to undo 2 hooks on the back side Step Procedure Points R6377 Hooks R6378 Hooks Hook Holes Hook Holes R6379 ...

Page 335: ...or Unit E Series 80 90 100 Class Si12 619A 322 Removal Procedure 3 Remove the right side panel 4 Removing the front panel 2 1 Remove the 2 screws Step Procedure Points R6380 Front Panel 1 Front Panel 2 R6381 ...

Page 336: ...Si12 619A Outdoor Unit E Series 80 90 100 Class Removal Procedure 323 2 Slide the panel downward to undo the hook 3 Remove the front panel 2 Step Procedure Points R6382 R6383 R6384 ...

Page 337: ...emoving the front panel 1 Remove the discharge grille and propeller fan first to remove the front panel 1 1 Remove the 4 screws on the discharge grille 2 Pull the bottom of the discharge grille toward yourself Step Procedure Points Front Panel 1 Discharge grille R6385 R6386 ...

Page 338: ...90 100 Class Removal Procedure 325 3 Next slide the grille downward to undo the 2 hooks at the top 4 Remove the discharge grille 5 Remove the propeller fan fixing nut Fan fixing nut M8 Step Procedure Points R6387 Hooks R6388 R6389 R6390 ...

Page 339: ...0 100 Class Si12 619A 326 Removal Procedure 6 Remove the 2 fixing screws on the partition plate 7 Remove the screw at bottom left of the front 8 Remove the screw at bottom of the left side Step Procedure Points R6391 R6392 R6393 ...

Page 340: ...es 80 90 100 Class Removal Procedure 327 9 Remove the screw at bottom of the back side 10 The front panel 1 is provided with a hook on its front Lift the front panel off position to remove it Step Procedure Points R6394 Hook R6395 ...

Page 341: ... Si12 619A 328 Removal Procedure 11 Remove the front panel 1 The back is a little complicated in shape Be sure to detach carefully 6 Removing the rear panel 1 Remove the fixing screw on the partition plate Step Procedure Points R6396 R6397 ...

Page 342: ...Si12 619A Outdoor Unit E Series 80 90 100 Class Removal Procedure 329 2 Slide the panel leftward to undo the hook and remove the partition plate 3 Remove the 5 screws Step Procedure Points R6398 R6399 ...

Page 343: ...tdoor Unit E Series 80 90 100 Class Si12 619A 330 Removal Procedure 4 Remove the wire fixing plate upper 5 Remove the 3 screws 6 Remove the wire fixing plate lower Step Procedure Points R6400 R6401 R6402 ...

Page 344: ...90 100 Class Removal Procedure 331 7 Undo the holder of the thermistor The holder is secured in the clearances of the heat exchanger fins 8 Remove the 3 fixing screws on the partition plate Step Procedure Points R6403 Groove R6404 R6405 ...

Page 345: ...A 332 Removal Procedure 9 Remove the fixing screw from the bottom frame 10 Remove the fixing screw from the shut off valve mounting plate 11 Lift the panel upward to undo the 2 hooks and remove it Step Procedure Points R6406 R6407 Hooks Hooks R6408 ...

Page 346: ...Si12 619A Outdoor Unit E Series 80 90 100 Class Removal Procedure 333 12 Remove the rear panel Step Procedure Points R6409 ...

Page 347: ...ure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the fixing screw from the shut off valve mounting plate 2 Remove the fixing screw on the partition plate 3 Remove the 2 screws to detach the earth wires R6410 R6411 R6412 ...

Page 348: ...rness 6 Disconnect the motorized valve connector S80 Detach the clamp Just pull the push mount type out of position 7 Disconnect the 4 motorized valve connectors for Rooms A B C and D A Connector S20 white B Connector S21 red C Connector S22 blue D Connector S23 yellow Step Procedure Points S70 R6413 R6414 S80 Clamp R6415 A B C D Clamp R6416 ...

Page 349: ...19A 336 Removal Procedure 8 Disconnect the liquid pipe thermistor connector S93 9 Disconnect the gas pipe thermistor connector S92 10 Disconnect the discharge pipe thermistor connector S90 Step Procedure Points Clamp S93 R6417 S92 R6418 S90 R6419 ...

Page 350: ...The wire harness is hooked on the bottom of the electrical box Unhook it and remove the clamp 12 Disconnect the OL connector S40 13 Remove the OL wire harness and the compressor wire harness together from the partition Step Procedure Points Clamp R6420 S40 R6421 Clamp R6422 ...

Page 351: ...nose pliers or the like to pull out the clamp Detach the clamp Just pull the push mount type out of position 15 Disconnect the relay connector of the compressor 16 First slide the box leftward to undo the hook on the right side of the box Step Procedure Points Clamp R6423 R6469 R6424 ...

Page 352: ...Si12 619A Outdoor Unit E Series 80 90 100 Class Removal Procedure 339 17 Lift up the electrical box to remove it Step Procedure Points R6425 ...

Page 353: ... 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Removing the Control PCB 1 Open the cover of the electrical box Undo the 4 hooks The hooks are marked with 2 Remove the 3 screws 3 Undo the 4 hooks 4 Lift up your side of the control PCB R6426 R6427 R6428 R6429 R6430 ...

Page 354: ...er PCB z Connectors S31 S32 For SPM PCB z Connectors S51 S101 For display PCB z Connector S10 For relay PCB z Connectors H1 H2 For DB diode bridge power wire harnesses AC1 red and AC2 black 6 Remove the control PCB 2 Removing the reactor 1 Remove the screw 2 Remove the 3 screws and lift the reactor upward to remove it Step Procedure Points R6431 R6432 R6433 R6434 ...

Page 355: ...s Si12 619A 342 Removal Procedure 3 Removing the display PCB 1 Disconnect the control PCB connectors S52 S102 2 Slightly lift the top hooks to detach 3 Undo the bottom hook to remove the display PCB Step Procedure Points R6435 R6436 R6437 ...

Page 356: ... Series 80 90 100 Class Removal Procedure 343 4 Removing the servicing cover off the terminal block assembly 1 Remove the screw 2 Lift the hook to detach 3 Open the cover toward yourself Step Procedure Points R6438 R6439 R6440 ...

Page 357: ...ng work Step Procedure Points 1 2 Remove the 2 screws at the bottom first Next remove the 2 top screws Be sure to remove the bottom screws first If the top screws are removed first the fan motor the center of gravity of which is toward the front may tilt down or fall getting you injured 3 Remove the fan motor When reassembling be sure to place the wire harness lower R6441 R6442 2 1 R6443 R6444 Har...

Page 358: ...rning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Removing the motorized valve coil The number of motorized valve coils is different depending on the models 1 Pull the motorized valve coils out of position Motorized valve coil R6955 R6446 ...

Page 359: ...Outdoor Unit E Series 80 90 100 Class Si12 619A 346 Removal Procedure 2 Pull out the thermistors Step Procedure Points Gas pipe thermistor R6956 R6448 ...

Page 360: ... 100 Class Removal Procedure 347 3 Peel the putty from the liquid pipe thermistor and pull out the thermistor 2 Removal of Thermistors 1 Pull out the heat exchanger thermistor Step Procedure Points Liquid pipe thermistor R6957 R6450 R6451 ...

Page 361: ...12 619A 348 Removal Procedure 2 Remove the spring from the heat exchanger thermistor Be careful no to lose the spring 3 Slightly open the sound blanket 4 Remove the sound blanket top upper Step Procedure Points R6452 Spring Spring R6453 R6454 ...

Page 362: ...E Series 80 90 100 Class Removal Procedure 349 5 Remove the discharge pipe thermistor 6 Remove the fixture 3 Removing the Four way valve coil and motorized valve coil 1 Remove the screw Step Procedure Points R6455 R6456 R6457 ...

Page 363: ...Outdoor Unit E Series 80 90 100 Class Si12 619A 350 Removal Procedure 2 Remove the Four way valve coil Step Procedure Points R6458 ...

Page 364: ...upplies before disassembling work Step Procedure Points 1 Undo the 2 Velcro tapes off the sound blanket and open the sound blanket outer sleeve 2 Remove the sound blanket top upper The sound blanket is fragile Carefully pass the discharge pipe through it 3 Remove the screw from the partition plate and open the plate slightly to the left for easy work Velcro tapes R6459 R6460 R6461 ...

Page 365: ...e notches of the compressor mount 3 locations 5 Remove the sound blanket top lower The sound blanket is fragile Carefully pass the discharge pipe through it 6 Open the sound blanket inner sleeve and remove part of the muffler The sound blanket is fragile Be careful of the notches of the compressor mount 3 locations Step Procedure Points R6462 R6463 R6464 ...

Page 366: ...Si12 619A Outdoor Unit E Series 80 90 100 Class Removal Procedure 353 7 Remove the sound blanket outer sleeve Step Procedure Points R6465 ...

Page 367: ...e Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the terminal cover 2 Pull out the 3 leads using long nose pliers U red V yellow W blue 3 Remove the OL 4 Remove the 3 screws R6466 R6467 W blue U red V yellow OL R6468 ...

Page 368: ...Si12 619A Others 355 Part 8 Others 1 Others 356 1 1 Test Run from the Remote Controller 356 1 2 Jumper Settings 357 1 3 Application of Silicon Grease to a Power Transistor and a Diode Bridge 358 ...

Page 369: ...n and Testing 1 Measure the supply voltage and make sure that it falls in the specified range 2 Trial operation should be carried out in either cooling or heating mode 3 Carry out the test operation in accordance with the Operation Manual to ensure that all functions and parts such as louver movement are working properly The air conditioner requires a small amount of power in its standby mode If t...

Page 370: ... remote controller 1 Slide the front cover and take it off 2 Cut the address jumper J4 1 2 2 Jumper Setting R4417 ADDRESS JA ADDRESS JA EXIST 1 CUT 2 ADDRESS J4 EXIST CUT 1 2 J4 R4418 Jumper On indoor PCB Function When connected factory set When cut JC Power failure recovery function Auto start Unit does not resume operation after recovering from a power failure Timer ON OFF settings are cleared J...

Page 371: ...sistor and the diode bridge Applying the paste should be implemented in accordance with the following instruction Remark There is the possibility of failure with smoke in case of bad heat radiation To completely wipe off the old silicon grease on a heat radiation fin To evenly apply the silicon grease to the whole Do not have any foreign object such as solder or paper waste between the power trans...

Page 372: ...Si12 619A Appendix 359 Part 9 Appendix 1 Piping Diagrams 360 1 1 Indoor Units 360 1 2 Outdoor Units 364 2 Wiring Diagrams 370 2 1 Indoor Units 370 2 2 Outdoor Units 376 ...

Page 373: ...XCH INDOOR UNIT M 6 4CuT 7 0CuT 9 5CuT HEAT EXCHANGER REFRIGERANT FLOW COOLING 6 4CuT 6 4CuT 4D050757A FIELD PIPING FIELD PIPING 12 7CuT 6 4CuT CROSS FLOW FAN FAN MOTOR 7 9CuT INDOOR UNIT 12 7CuT M HEAT EXCHANGER REFRIGERANT FLOW ON HEAT EXCH THERMISTOR HEATING COOLING 4D040081Q 15 9CuT FIELD PIPING FIELD PIPING 6 4CuT CROSS FLOW FAN FAN MOTOR 7 9CuT INDOOR UNIT 12 7CuT M HEAT EXCHANGER REFRIGERAN...

Page 374: ...uT FIELD PIPING FIELD PIPING 6 4CuT CROSS FLOW FAN FAN MOTOR 7 9CuT INDOOR UNIT 12 7CuT M HEAT EXCHANGER REFRIGERANT FLOW ON HEAT EXCH THERMISTOR COOLING HEATING 4D040082P C 4D045449J FIELD PIPING FIELD PIPING CuT 6 4CuT INDOOR UNIT SIROCCO FAN 6 4CuT CuT FAN MOTOR M REFRIGERANT FLOW HEAT EXCHANGER COOLING HEATING THERMISTOR ON HEAT EXCH CDKS25CVMA CDKS50CVMA CDKS60CVMA CDXS50DVMT CDXS60DVMT CDKS5...

Page 375: ...RMISTOR ON HEAT EXCH REFRIGERANT FLOW COOLING HEATING FIELD PIPING FIELD PIPING 6 4CuT 12 7CuT REFRIGERANT FLOW HEATING COOLING INDOOR UNIT 9 5CuT SIROCCO FAN 12 7CuT FAN MOTOR M HEAT EXCHANGER THERMISTOR ON HEAT EXCH 4D048724A 4D034714C FIELD PIPING FIELD PIPING 6 4CuT 9 5CuT REFRIGERANT FLOW SINGLE UNION JOINT SINGLE UNION JOINT INDOOR UNIT 7 9CuT CROSS FLOW FAN CROSS FLOW FAN COOLING HEATING FA...

Page 376: ... 6 4CuT REFRIGERANT FLOW INDOOR UNIT 9 5CuT MUFFLER MUFFLER CROSS FLOW FAN CROSS FLOW FAN HEATING COOLING FAN MOTOR FAN MOTOR 9 5CuT M M 4 8CuT 4 8CuT 7 0CuT HEAT EXCHANGER 7 0CuT 7 0CuT 7 0CuT ONHEATEXCH THERMISTOR 9 5 12 7 Outdoor unit To 6 4 6 4 MODEL FFQ50 60B8V1B FFQ25 35B8V1B Field piping φ C1220T O Field piping φ C1220T O Indoor unit Indoor heat exchanger C 4D039335 ...

Page 377: ...DOOR UNIT HEADER ELECTRONIC EXPANSION VALVE THERMISTOR DOA COOLING 12 7CuT 6 4CuT STOP VALVE STOP VALVE 6 4CuT 6 4 CuT THERMISTOR DLB LIQUID PIPE LIQUID PIPE 3D054638 EVB EVA EVC ACCUMULATOR DISTRIBUTOR 15 9 CuT THERMISTOR DE 12 7 CuT 12 7CuT REFRIGERANT FLOW GAS PIPE THERMISTOR DGC 12 7 CuT FIELD PIPING GAS SIDE 12 7CuT ROOM B GAS PIPE THERMISTOR DGA 6 4 CuT COMPRESSOR ELECTRONIC EXPANSION VALVE ...

Page 378: ...D PIPE THERMISTOR ROOM A FILTER FILTER FILTER FILTER ROOM B 6 4 CuT ROOM C 15 9 CuT ROOM C 6 4 CuT ROOM D 6 4 CuT ROOMA 9 5 CuT ROOM B 12 7 CuT ROOM D 15 9 CuT ROOMA 6 4 CuT FIELD PIPING LIQUID FIELD PIPING GAS REFRIGERANT FLOW HEADER 12 7CuT 12 7CuT OUTDOOR UNIT COOLING 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT PROPELLER FAN DC FAN MOTOR DISCHARGE PIPE THERMISTOR COMPRESSOR HEAT EXC...

Page 379: ...IQUID PIPING FILTER FILTER EVA EVB EVC 3D038534C REFRIGERANT FLOW 9 5CuT HEAT EXCHANGER THERMISTOR DE OUTDOOR UNIT COOLING 7 9CuT PROPELLER FAN DC FAN MOTOR HEAT EXCHANGER DISCHARGE PIPE THERMISTOR DO COMPRESSOR M OUTDOOR TEMPARATURE THERMISTOR DOA CAPILLARY TUBE ACCUMULATOR 12 7CuT DISTRIBUTOR ACCUMULATOR 9 5CuT 12 7CuT FILTER STOP VALVE LIQUID LINE STOP VALVE GAS LINE HEADER HEADER MOTOR OPERATE...

Page 380: ...MUFFLER FILTER STOP VALVE LIQUIDLINE STOPVALVE GAS LINE HEADER HEADER 6 4CuT 6 4CuT 6 4CuT EXPANSION VALVE EXPANSION VALVE EXPANSION VALVE 12 7CuT 12 7CuT 12 7CuT ELECTRONIC ELECTRONIC ELECTRONIC EVB EVC EVA GAS PIPE THERMISTOR DGC GAS PIPE THERMISTOR DGB GAS PIPE THERMISTOR DGA THERMISTOR DLA THERMISTOR DLC THERMISTOR DLB LIQUID PIPE LIQUID PIPE LIQUID PIPE FILTER FILTER FILTER 6 4 CuT 6 4 CuT 9 ...

Page 381: ... CuT 9 5 CuT 6 4 CuT 6 4 CuT 12 7 CuT ROOM A ROOM C ROOM A ROOM B ROOM C ROOM B GAS FIELD FIELD SIDE SIDE PIPING LIQUID PIPING 3D052055C 3D054639 EVC EVA EVB HEAT EXCHANGER 9 5CuT REFRIGERANT FLOW 12 7CuT DC FAN MOTOR MUFFLER STOP VALVE LIQUID PIPE THERMISTOR DLA 12 7 CuT 6 4 CuT ROOM B 6 4CuT GAS PIPE THERMISTOR DGA GAS LINE HEATING GAS PIPE THERMISTOR DGC OUTDOOR TEMPERATURE HEAT EXCHANGER ROOM ...

Page 382: ...ER FILTER ROOM B 12 7 CuT ROOMA 9 5 CuT ROOM D 6 4 CuT ROOM D 15 9 CuT ROOMA 6 4 CuT ROOM B 6 4 CuT ROOM C 6 4 CuT ROOM C 15 9 CuT FIELD PIPING GAS FIELD PIPING LIQUID 15 9CuT 12 7CuT 15 9CuT MUFFLER MUFFLER 3D051937B REFRIGERANT FLOW HEADER 12 7CuT OUTDOOR UNIT COOLING HEATING 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT PROPELLER FAN DC FAN MOTOR DISCHARGE PIPE THERMISTOR COMPRESSOR H...

Page 383: ...INAL STRIP PROTECTIVE EARTH NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN CAUTION 3D046453B 3D038065G CONTROLLER WIRELESS REMOTE PCB4 PCB3 PCB5 INTELLIGENT EYE LED1 H1P R1T SENSOR t S37 S38 LED2 H2P LED3 H3P PCB2 S27 S36 S1W RECEIVER SIGNAL S26 S35 S21 S29 S28 PCB1 R2T S32 t RECTIFIER 1 RED M1S M S6 ORG YLW PNK 5 BLU 1 TRANSMISSION BRN...

Page 384: ...LW PNK 5 BLU 1 TRANSMISSION BRN RED CIRCUIT M2S S8 M ORG YLW 7 1 3 15A S1 PNK 6 Fu BLU WHT BRN RED BLU ORG H2 H3 H1 INDOOR FG M1F M GRN R1T R2T M1S M2S PCB1 PCB5 WHT RED BLK Fu M1F H1 H3 S1 S38 H1P H3P FG YLW X1M S1W X1M 3 2 1 PROTECTIVE EARTH THE MAIN POWER SUPPLY IS ON AGAIN TURNED OFF AND THEN BACK NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF FIELD WIRING CAUTION 3 2 1 OUTDOOR FRAME GROUND...

Page 385: ...Wiring Diagrams Si12 619A 372 Appendix FTK X S50 60 71FVLT ...

Page 386: ...EARTH TERMINAL FOR CENTRALIZED CONTROL indoor 3 1 S7 BLU GRY PPL S1 RED 6 V1TR 1 M1F M 3 BLK Q1M 130 C 1 WHT YLW TRANSMISSION CIRCUIT C1 3 15A F1U Q1M M1F V1TR S1W X1M Z1C H1P H3P R1T R2T PCB1 PCB2 S1 S32 RTH1 GND H2 H3 H1 FAN MOTOR PRINTED CIRCUIT BOARD NOISE FILTER FERRITE CORE PHASE CONTROL CIRCUIT TERMINAL BLOCK OPERATION SWITCH THERMAL PROTECTOR M1F EMBEDDED THERMISTOR PILOT LAMP Z1C N 2 CONN...

Page 387: ...TICALLY IF ON AGAIN S1W OPERATION SWITCH SW7 S6 S37 X11A X21A CONNECTOR PCB1 PCB4 PRINTED CIRCUIT BOARD R1T R2T THERMISTOR X1M TERMINAL STRIP CAUTION FIELD WIRING 2 3 1 outdoor 3D034713C CONTROLLER WIRELESS REMOTE indoor H1P S1W S2W 4 S4W M2S H2P M1S PCB4 PCB3 H3P RECEIVER SIGNAL M M L1S S24 S42 S26 S41 S23 S25 S6 PCB2 S31 R1T S21 TRANSMISSION S32 R2T CIRCUIT HA 3 15A FU S7 S302 S203 S201 S301 H3 ...

Page 388: ...CIRCUIT BOARD MAGNETIC RELAY M1P PRINTED CIRCUIT BOARD PRINTED CIRCUIT BOARD TERMINAL STRIP TERMINAL STRIP FUSE F5A 250V MOTOR SWING FLAP MOTOR DRAIN PUMP MOTOR INDOOR FAN CAPACITOR M1F THERMISTOR AIR THERMISTOR AIR THERMISTOR COIL 2 THERMISTOR COIL 1 REMOTE CONTROLLER SLAVE INDOOR UNIT X2M 3 2 1 NOTE 3 X24A CONNECTOR A1P TO OUTDOOR RECEIVER DISPLAY UNIT H05VV U4G2 5 UNIT A3P BS1 SS1 SS2 X40A X60A...

Page 389: ...5 GRN YLW YLW GRN outdoor S10 1 7 ROOM A ROOM C 1 MRC R1T AC2 BLU BLU BLK MID2 N BLK 1 PCB1 BLU 1 BLU R4T 2 3 1 8 1 BLU 5 TO INDOOR UNIT TB6 R3T YLW Z3C C BLU YLW M 1 ORG BRN 1 6 1 1 S34 YLW S20 RED S31 1 RED N BLU HE2 1 R12T TB5 BRN CN11 BRN 3 15A BLK BRN GRY SA1 3 15A BLU S21 WHT M1C RED BLK 2 S93 V BLK S102 OUTDOOR DISCHARGE M 3 SW5 L1 BLU YLW S72 FIELD WIRING BLU 1 L GRY BRN 8 AC1 TB4 WHT YLW ...

Page 390: ...OR REACTOR FAN MOTOR COMPRESSOR MOTOR R4T 1 BLK Z4C ROOM A t LIQUID PIPE R5T GRY X11A Z5C ROOM B S93 t R6T S40 YLW YLW BLU RED ROOM C t R7T Q1L BLU 1 ROOM D V t M1F M1C 3 BLK M M 4 W 11 U BLK 3D051965A L N POWER SUPPLY TO INDOOR UNIT ROOM B ROOM A ROOM C 3 3 3 2 2 2 1 1 1 FIELD WIRING indoor GRN SHEETMETAL YLW X4M X3M X2M X1M L 3 3 3 2 2 2 N 1 1 1 outdoor Z3C BLK BLK BLK WHT WHT WHT Z2C YLW BLU RE...

Page 391: ...NT TRANS MID1 SPM MID2 PCB N L 3 2 1 3 2 1 3 2 1 L 3 3 3 2 2 2 N 1 1 1 4 1 3D038533D ROOM A ROOM B ROOM C ROOM D TO INDOOR UNIT 3 3 3 3 2 2 2 2 1 1 1 1 FIELD WIRING V2 V5 MRC W Y1E Y4E MRB MRD S2 S102 X1M X5M E AC1 AC2 L2 HE HL HN R1T R12T H1P H5P Z1C Z3C MRM10 MRM20 H1 H2 L1 MID1 MID2 FU1 FU2 FU201 X3M X4M X5M X2M X1M L 3 3 3 3 2 2 2 2 N 1 1 1 1 FUSE VARISTOR CONNECTOR MOLDED INTERCONNECT DEVICE ...

Page 392: ...N YLW 5 S15 1 GRN YLW BRN V L1 SPM ROOM A GRN W 1 12 S71 PCB2 BLK 3 15A N1 1 ROOM A ROOM C ROOM B BLK N BRN 6 BLU 9 1 RED LIQUID PIPE R1T R12T THERMISTOR S2 S102 CONNECTOR LED A LED 1 4 PILOT LAMP L LIVE N NEUTRAL SW1 FORCED OPERATION ON OFF SW SW2 FORCED OPERATION MODE SELECT SW SW3 WIRING ERROR CHECK SW SW4 PRIORITY ROOM SETTING SW SW5 NIGHT QUIET MODE SETTING SW SA1 SURGE ARRESTER Y1R REVERSING...

Page 393: ... COIL TERMINAL STRIP FIXED PLATE R4T 1 BLK Z4C ROOM A t LIQUID PIPE R5T GRY X11A Z5C ROOM B S93 t R6T S40 YLW YLW BLU RED ROOM C t R7T Q1L BLU 1 ROOM D V t M1F M1C 3 BLK M M 4 W 11 U BLK 3D051963A N L POWER SUPPLY TO INDOOR UNIT ROOM C ROOM A ROOM B 3 3 3 2 2 2 1 1 1 FIELD WIRING indoor GRN SHEETMETAL YLW X4M X3M X2M X1M L 3 3 3 2 2 2 N 1 1 1 outdoor Z3C BLK BLK BLK WHT WHT WHT Z2C YLW BLU RED BRN...

Page 394: ...ompressor lock 226 compressor overload 225 compressor protection function 103 compressor sensor system abnormality 236 connection pipe condensation preventing function 116 connectors 52 54 56 58 61 64 67 70 73 control PCB 285 309 340 control PCB A1P 65 control PCB indoor unit 53 55 56 59 63 control PCB outdoor unit D series 74 control PCB outdoor unit E series 68 75 class models 71 cooling heating...

Page 395: ... 222 freeze up protection control or high pressure control 212 frequency control 100 frequency principle 78 front panel 273 322 324 FU 61 FU1 52 54 56 58 67 70 73 FU2 67 70 73 FU201 70 73 FU3 67 functions 2 fuse 52 54 56 58 61 67 70 73 G gas pipe isothermal control during cooling 110 gas pipe thermistor 95 97 305 314 H H0 236 H1 70 73 341 H2 70 73 341 H6 238 H8 239 H9 241 HA 52 54 HAC1 70 Hall IC ...

Page 396: ...c deodorizing filter 92 PI control 101 piping diagrams 360 position sensor abnormality 238 power failure recovery function 52 54 56 58 61 power supply PCB 59 power supply PCB 35 class 62 power supply PCB 50 class 62 power supply waveforms check 266 power transistor 358 power transistor check 267 power airflow dual flaps 80 POWERFUL operation 155 POWERFUL operation mode 116 preheating operation 103...

Page 397: ...nitor PCB 69 71 308 310 service PCB 284 shunt 315 316 shutter drive motor shutter limit switch abnormality 218 side panel 320 signal receiver PCB 53 55 60 63 signal receiver PCB A3P 66 signal receiving sign 92 signal transmission error between indoor and outdoor units 219 signal transmission error on outdoor unit PCB 258 silicon grease 358 solenoid valve 315 316 solenoid valve coil 313 sound blank...

Page 398: ...6 58 61 V100 67 V11 67 V2 67 70 73 V3 67 70 73 V5 67 70 73 V6 67 V9 67 varistor 52 54 56 58 61 67 70 73 voltage detection function 116 W W 70 73 wide angle louvers 80 wiring diagrams 370 wiring error check 114 X X10A 64 X11A 64 X15A 64 X17A 64 X18A 64 X19A 64 X1A 64 X20A 64 X24A 64 X25A 64 X27A 64 X2A 64 X33A 64 X35A 64 X36A 64 X40A 64 X5A 64 X60A 64 X61A 64 ...

Page 399: ...Si12 619A vi Index ...

Page 400: ...r way valve performance check 262 freeze up protection control 105 222 freeze up protection control or high pressure control 212 frequency control 100 frequency principle 78 function of thermistor 95 cooling only model 97 heat pump model 95 H Hall IC check 269 heating peak cut control 105 high pressure control in cooling 234 HOME LEAVE operation 90 I indoor unit PCB abnormality 211 input current c...

Page 401: ...B 50 class 62 power supply waveforms check 266 power transistor 358 power transistor check 267 priority room setting 116 programme dry function 82 R radiation fin temperature rise 247 remote controller 205 S service monitor PCB 69 71 shutter drive motor shutter limit switch abnormality 218 signal receiver PCB 53 55 60 63 signal receiver PCB A3P 66 signal transmission error between indoor and outdo...

Page 402: ... FFQ50B8V1B 375 FFQ60B8V1B 375 FLXS25BVMA 374 FLXS35BVMA 374 FLXS50BVMA 374 FLXS60BVMA 374 FTK X S20 25 35DVMT 371 FTK X S20DVMA 370 FTK X S25 35EVMA 370 FTK X S50 60 71FVLT 372 FTK X S50 60 71FVMA 371 FTK X S50DVMT 370 FTK X S60 71DVMT 371 FTKS25 35DVM 370 FTKS50 60 71FVM 371 FTKS50BVMB 370 FTKS60 71BVMB 371 FVXS35BVMA 374 FVXS50BVMA 374 wiring error check 114 ...

Page 403: ...Specifications designs and other content appearing in this brochure are current as of April 2007 but subject to change without notice Si 12 619A Printed in Japan 04 2007 B AK ...

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