Page 1 Si04 - 306E Inverter Pair Wall Mounted Type B-Series [Applied Models] Inverter Pair : Cooling Only Inverter Pair : Heat Pump Non-Inverter Pair : Cooling Only Non-Inverter Pair : Heat Pump...
Page 2 Si04-306E Inverter Pair B-Series Cooling Only Indoor Unit <R410A> FTKS50BVMA(8) FTKS50BVMB FTS50BVMB FTKS60BVMA FTKS60BVMB FTS60BVMB FTKS71BVMA FTKS71BVMB FTKS71BAVMB <R22> FTKD50BVM FTKD50BVMA FTKD50BVMT FTKD18BVMS FTKD60BVM FTKD60BVMA FTKD60BVMT FTKD24BVMS FTKD71BVM FTKD71BVMA FTKD71BVMT FTKD28BVMS Outdoor Unit <R410A> RKS50BVMA RKS50BVMB(9) RKS50B2VMB RS50BVMB RKS50BVMG RKS60BVMB(9) RKS60B2VMB...
Page 3: Table Of Contents
Si04-306E 1. Introduction .....................v 1.1 Safety Cautions ..................v 1.2 Used Icons ....................ix Part 1 List of Functions ..............1 1. List of Functions ..................2 1.1 R-410A Series ..................2 1.2 R-22 Series ....................8 Part 2 Specifications ..............13 1. Specifications ..................14 1.1 Cooling Only - R-410A Series ..............14 1.2 Cooling Only - R-22 Series..............19 1.3 Heat Pump - R-410A Series..............23...
Page 4 Si04-306E 3.13 Malfunctions ...................71 3.14 Forced Operation Mode .................73 3.15 Additional Function.................73 3.16 Facility Setting Switch (cooling at low outdoor temperature)....74 Part 5 Operation Manual ............. 75 1. System Configuration................76 2. Instruction....................77 2.1 Safety Precautions .................77 2.2 Names of Parts..................79 2.3 Preparation Before Operation ..............82 2.4 AUTO ·...
Page 5 Si04-306E Part 7 Removal Procedure ............151 1. Indoor Unit...................152 1.1 Removal of the Air Filter / Front Panel ..........152 1.2 Removal of the Front Grille ..............155 1.3 Removal of the Horizontal Blades / Vertical Blades ......157 1.4 Removal of the Electrical Box / PCB / Swing Motor ......159 1.5 Removal of the Heat Exchanger ............165 1.6 Removal of the Fan Rotor / Fan Motor..........168 2.
Page 6: Introduction
Si04-306E Introduction 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ Warning” Warnings items are especially important since they can lead to death or serious injury if they are not followed closely.
Page 7 Introduction Si04-306E Warning Be sure to wear a safety helmet, gloves, and a safety belt when working at a high place (more than 2m). Insufficient safety measures may cause a fall accident. In case of R410A refrigerant models, be sure to use pipes, flare nuts and tools for the exclusive use of the R410A refrigerant.
Page 8 Si04-306E Introduction 1.1.2 Cautions Regarding Safety of Users Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools may cause an electrical shock, excessive heat generation or fire.
Page 9 Introduction Si04-306E Warning Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet securely. If the plug has dust or loose connection, it may cause an electrical shock or fire. Be sure to install the product correctly by using the provided standard For unitary type installation frame.
Page 10: Used Icons
Si04-306E Introduction Caution Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 MΩ or higher. Faulty insulation may cause an electrical shock. Be sure to check the drainage of the indoor unit after the repair. Faulty drainage may cause the water to enter the room and wet the furniture and floor.
Page 11 Introduction Si04-306E...
Page 12: Part 1 List Of Functions
Si04-306E Part 1 List of Functions 1. List of Functions ..................2 1.1 R-410A Series ..................2 1.2 R-22 Series ....................8 List of Functions...
Page 13: List Of Functions
List of Functions Si04-306E List of Functions R-410A Series Category Functions Category Functions Basic Inverter (with Inverter Power Health & Function Control) Clean Air Purifying Filter — — — –5 –5 –5 Operation Limit for Cooling (°CDB) –15 Operation Limit for Heating (°CWB) —...
Page 14 Si04-306E List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean Air Purifying Filter — — –10 ★ –10 Operation Limit for Cooling (°CDB) –15 Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter —...
Page 15 List of Functions Si04-306E Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean Air Purifying Filter — — –10 –10 Operation Limit for Cooling (°CDB) ★ –15 Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter —...
Page 16 Si04-306E List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean Air Purifying Filter — — –10 –10 Operation Limit for Cooling (°CDB) ★ –15 Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter —...
Page 17 List of Functions Si04-306E Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean Air Purifying Filter — — –10 –10 Operation Limit for Cooling (°CDB) –15 –15 Operation Limit for Heating (°CWB) Photocatalytic Deodorizing Filter —...
Page 18 Si04-306E List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) — — Health & Function Clean Air Purifying Filter — — –10 –10 Operation Limit for Cooling (°CDB) –15 Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter —...
Page 19: Series
List of Functions Si04-306E R-22 Series Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean Air Purifying Filter — — –5 –5 Operation Limit for Cooling (°CDB) –15 Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter —...
Page 20 Si04-306E List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean Air Purifying Filter — — –5 –5 Operation Limit for Cooling (°CDB) –15 Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter —...
Page 21 List of Functions Si04-306E Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — Function Clean Operation Limit for Cooling (°CDB) 10~46 Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter — Air Purifying Filter with Photocatalytic PAM Control Deodorizing Function Compressor...
Page 22 Si04-306E List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean Air Purifying Filter — –5 Operation Limit for Cooling (°CDB) –15 Operation Limit for Heating (°CWB) Photocatalytic Deodorizing Filter — Air Purifying Filter with Photocatalytic PAM Control Deodorizing Function Compressor...
Page 23 List of Functions Si04-306E Category Functions Category Functions Basic Function Inverter (with Inverter Power Control) Health & Clean Air Purifying Filter — –5 Operation Limit for Cooling (°CDB) –15 Operation Limit for Heating (°CWB) Photocatalytic Deodorizing Filter — Air Purifying Filter with Photocatalytic PAM Control Deodorizing Function Compressor...
Page 24 Si04-306E Part 2 Specifications 1. Specifications ..................14 1.1 Cooling Only - R-410A Series ..............14 1.2 Cooling Only - R-22 Series..............19 1.3 Heat Pump - R-410A Series..............23 1.4 Heat Pump - R-22 Series ...............30 Specifications...
Page 25: Part 2 Specifications
Specifications Si04-306E Specifications Cooling Only - R-410A Series 50Hz 240V Indoor Units FTKS50BVMA FTKS60BVMA FTKS71BVMA Model Outdoor Units RKS50BVMA RKS60BVMA RKS71BVMA 5.0 (0.9~5.8) 6.0 (0.9~6.7) 7.1 (0.9~8.0) Capacity Btu/h 17,070 (3,070~19,800) 20,480 (3,070~22,870) 24,240 (3,070~27,310) Rated (Min.~Max.) kcal/h 4,300 (770~4,990) 5,160 (770~5,760) 6,110 (770~6,880) Moisture Removal...
Page 26 Si04-306E Specifications 50Hz 230V Indoor Units FTKS50BVMA8 Model Outdoor Units RKS50BVMG 5.00 (0.90~5.80) Capacity Btu/h 17,070 (3,070~19,800) Rated (Min.~Max.) kcal/h 4,300 (770~4,990) Moisture Removal Running Current Rated Power Consumption 1,660 (450~2,300) Rated (Min.~Max.) Power Factor 98.8 3.01 Rated (Min.~Max.) φ Liquid Piping φ...
Page 27 Specifications Si04-306E 50Hz 230V Indoor Units FTKS50BVMB FTKS60BVMB FTKS71BVMB Model Outdoor Units RKS50BVMB(9) RKS60BVMB(9) RKS71BVMB(9) 5.0 (0.9~5.8) 6.0 (0.9~6.7) 7.1 (0.9~8.0) Capacity Btu/h 17,070 (3,070~19,800) 20,480 (3,070~22,870) 24,240 (3,070~27,310) Rated (Min.~Max.) kcal/h 4,300 (770~4,990) 5,160 (770~5,760) 6,110 (770~6,880) Moisture Removal Running Current (Rated) 11.1 Power Consumption...
Page 28 Si04-306E Specifications 50Hz 230V Indoor Units FTKS50BVMB FTKS60BVMB FTKS71BVMB Model Outdoor Units RKS50B2VMB RKS60B2VMB RKS71B2VMB 5.0 (0.9~5.8) 6.0 (0.9~6.7) 7.1 (0.9~8.0) Capacity Btu/h 17,070 (3,070~19,800) 20,480 (3,070~22,870) 24,240 (3,070~27,310) Rated kcal/h 4,300 (770~4,990) 5,160 (770~5,760) 6,110 (770~6,880) Moisture Removal Running Current (Rated) 11.1 Power Consumption 1,660 (450~2,300)
Page 29 Specifications Si04-306E 50Hz 230V Indoor Units FTKS71BAVMB FTS50BVMB FTS60BVMB Model Outdoor Units RKS71B3VMB RS50B(2)VMB RS60B(2)VMB 7.1 (0.9~8.0) Capacity Btu/h 24,240 (3,070~27,310) 17,070 20,480 Rated (Min.~Max.) kcal/h 6,110 (770~6,880) 4,300 5,160 Moisture Removal Running Current (Rated) 11.1 Power Consumption 2,530 (450~3,070) 1,660 2,120 Rated (Min.~Max.)
Page 30: Cooling Only - R-22 Series
Si04-306E Specifications Cooling Only - R-22 Series 50Hz 220-230-240V / 60Hz 220-230V Indoor Units FTKD50BVM FTKD60BVM FTKD71BVM Model Outdoor Units RKD50BVM RKD60BVM RKD71BVM 5.2 (0.9~5.9) 6.2 (0.9~6.5) 7.1 (0.9~7.6) Capacity Btu/h 17,750 (3,070~20,140) 21,170 (3,070~22,190) 24,240 (3,070~25,950) Rated (Min.~Max.) kcal/h 4,470 (770~5,070) 5,330 (770~5,590) 6,110 (770~6,540)
Page 31 Specifications Si04-306E 50Hz 220-230-240V / 60Hz 220-230V Indoor Units FTKD50BVMA FTKD60BVMA FTKD71BVMA Model Outdoor Units RKD50BVMA RKD60BVMA RKD71BVMA 5.2 (0.9~5.9) 6.2 (0.9~7.6) 7.1 (0.9~8.0) Capacity Btu/h 17,750 (3,070~20,140) 21,170 (3,070~22,190) 24,240 (3,070~25,950) Rated (Min.~Max.) kcal/h 4,470 (770~5,070) 5,330 (770~5,590) 6,110 (770~6,540) Moisture Removal Running Current (Rated) 7.4-7.0-6.7/7.4-7.0...
Page 32 Si04-306E Specifications 60Hz 220V Indoor Units FTKD50BVMT FTKD60BVMT FTKD71BVMT Model Outdoor Units RKD50BVMT RKD60BVMT RKD71BVMT 0.9~5.9 0.9~6.5 0.9~7.6 Cooling Capacity (Min.~Max.) kcal/h 775~5,070 775~5,590 775~6,540 Moisture Removal Running Current 14.0 Power Consumption (Min.~Max.) 450~2,300 460~2,710 470~3,210 Power Factor 99.4 99.0 99.0 2.86 2.79...
Page 33 Specifications Si04-306E 50Hz 220V Indoor Units FTKD18BVMS FTKD24BVMS FTKD28BVMS Model Outdoor Units RKD18BVMS RKD24BVMS RKD28BVMS 5.2 (0.9~5.8) 6.1 (0.9~7.0) 7.5 (0.9~7.8) Capacity Btu/h 17,700 (3,070~19,800) 20,800 (3,070~23,900) 25,600 (3,070~26,600) Rated (Min.~Max.) kcal/h 4,470 (770~4,990) 5,250 (770~6,020) 6,450 (775~6,710) Moisture Removal Running Current (Rated) 13.7 Power Consumption...
Page 34: Heat Pump - R-410A Series
Si04-306E Specifications Heat Pump - R-410A Series 50Hz 240V Indoor Units FTXS50BVMA FTXS60BVMA Model RXS50BVMA RXS60BVMA Outdoor Units Cooling Heating Cooling Heating 5.0 (0.9~5.8) 5.8 (0.9~7.5) 6.0 (0.9~6.7) 7.0 (0.9~8.0) Capacity Btu/h 17,070 (3,070~19,800) 19,800 (3,070~25,610) 20,480 (3,070~22,870) 23,900 (3,070~27,310) Rated (Min.~Max.) kcal/h 4,300 (770~4,990)
Page 35 Specifications Si04-306E 50Hz 240V Indoor Units FTXS71BVMA Model RXS71BVMA Outdoor Units Cooling Heating 7.1 (0.9~8.0) 8.5 (0.9~9.5) Capacity Btu/h 24,240 (3,070~27,310) 29,020 (3,070~32,430) Rated (Min.~Max.) kcal/h 6,110 (770~6,880) 7,310 (770~8,170) Moisture Removal — Running Current (Rated) 10.6 11.1 Power Consumption 2,530 (450~3,070) 2,630 (450~3,800) Rated (Min.~Max.)
Page 36 Si04-306E Specifications 50Hz 230V Indoor Units FTXS50BVMB FTXS60BVMB Model RXS50B(2)VMB RXS60B(2)VMB Outdoor Units Cooling Heating Cooling Heating 5.0 (0.9~5.8) 5.8 (0.9~7.5) 6.0 (0.9~6.7) 7.0 (0.9~8.0) Capacity Btu/h 17,070 (3,070~19,800) 19,800 (3,070~25,610) 20,480 (3,070~22,870) 23,900 (3,070~27,310) Rated (Min.~Max.) kcal/h 4,300 (770~4,990) 4,990 (770~6,450) 5,160 (770~5,760) 6,020 (770~6,880)
Page 37 Specifications Si04-306E 50Hz 230V Indoor Units FTXS71BVMB FTXS71BAVMB Model RXS71B(2)VMB RXS71B3VMB Outdoor Units Cooling Heating Cooling Heating 7.1 (0.9~8.0) 8.5 (0.9~9.5) 7.1 (0.9~8.0) 8.5 (0.9~9.5) Capacity Btu/h 24,240 (3,070~27,310) 29,020 (3,070~32,430) 24,240 (3,070~27,310) 29,020 (3,070~32,430) Rated (Min.~Max.) kcal/h 6,110 (770~6,880) 7,310 (770~8,170) 6,110 (770~6,880) 7,310 (770~8,170)
Page 38 Si04-306E Specifications 50Hz 230V Indoor Units ATXS50CVMB Model ARXS50C(2)VMB Outdoor Units Cooling Heating 5.0 (0.9~5.8) 5.8 (0.9~7.5) Capacity Btu/h 17,070 (3,070~19,800) 19,800 (3,070~25,610) Rated (Min.~Max.) kcal/h 4,300 (770~4,990) 4,990 (770~6,450) Moisture Removal — Running Current (Rated) Power Consumption 1,660 (450~2,300) 1,700 (450~2,580) Rated (Min.~Max.) Power Factor...
Page 39 Specifications Si04-306E 50Hz 230V Indoor Units ATXS50DVMB Model ARXS50C(2)VMB Outdoor Units Cooling Heating 5.0 (0.9~5.8) 5.8 (0.9~7.5) Capacity Btu/h 17,070 (3,070~19,800) 19,800 (3,070~25,610) Rated (Min.~Max.) kcal/h 4,300 (770~4,990) 4,990 (770~6,450) Moisture Removal — Running Current (Rated) Power Consumption 1,660 (450~2,300) 1,700 (450~2,580) Rated (Min.~Max.) Power Factor...
Page 40 Si04-306E Specifications 50Hz 230V Indoor Units FTYS50BVMB FTYS60BVMB Model RYS50B(2)VMB RYS60B(2)VMB Outdoor Units Cooling Heating Cooling Heating Capacity Btu/h 17,070 19,800 20,480 23,900 Rated kcal/h 4,300 4,990 5,160 6,020 Moisture Removal — — Running Current (Rated) Power Consumption 1,660 1,700 2,120 2,090 Rated...
Page 41: Heat Pump - R-22 Series
Specifications Si04-306E Heat Pump - R-22 Series 50Hz 220-230-240V / 60Hz 220-230V Indoor Units FTXD50BVMA FTXD60BVMA Model RXD50BVMA RXD60BVMA Outdoor Units Cooling Heating Cooling Heating 5.2 (0.9~5.9) 6.5 (0.9~8.0) 6.2 (0.9~7.6) 7.2 (0.9~9.0) Capacity Btu/h 17,750 (3,070~20,140) 22,190 (3,070~27,310) 21,170 (3,070~25,950) 24,580 (3,070~30,730) Rated (Min.~Max.) kcal/h...
Page 42 Si04-306E Specifications 50Hz 220-230-240V / 60Hz 220-230V Indoor Units FTXD71BVMA Model RXD71BVMA Outdoor Units Cooling Heating 7.1 (0.9~8.0) 8.5 (0.9~9.7) Capacity Btu/h 24,240 (3,070~27,310) 29,020 (3,070~33,120) Rated (Min.~Max.) kcal/h 6,110 (770~6,880) 7,310 (770~8,340) Moisture Removal — Running Current (Rated) 11.9-11.4-10.9/11.9-11.4 11.8-11.3-10.9/11.8-11.3 Power Consumption 2,600 (450~3,350)
Page 43 Specifications Si04-306E 60Hz 220V Indoor Units FTXD50BVMT FTXD60BVMT Model RXD50BVMT RXD60BVMT Outdoor Units Cooling Heating Cooling Heating 0.9~5.9 0.9~8.0 0.9~6.5 0.9~8.1 Capacity (Min.~Max.) kcal/h 775~5,070 775~6,880 775~5,590 775~6,970 Moisture Removal — — Running Current 8.00 9.10 9.60 9.60 Power Consumption (Min.~Max.) 450~2,300 450~2,800 460~2,710...
Page 44 Si04-306E Specifications 60Hz 220V Indoor Units FTXD71BVMT Model RXD71BVMT Outdoor Units Cooling Heating 0.9~7.6 0.9~9.0 Capacity (Min.~Max.) kcal/h 775~6,540 775~7,740 Moisture Removal — Running Current 14.0 12.6 Power Consumption (Min.~Max.) 470~3,210 470~3,600 Power Factor 99.0 99.2 2.48 3.09 φ Liquid Piping φ...
Page 45 Specifications Si04-306E 50Hz 240V Indoor Unit FTXD50BV4 Model RXD50BV4 Outdoor Unit Cooling Heating 4.8 (0.9~5.2) 6.0 (0.9~7.3) Capacity Btu/h 16,390 (3,070~17,750) 20,480 (3,070~24,920) Rated (Min.~Max.) kcal/h 4,130 (770~4,470) 5,160 (770~6,280) Moisture Removal — Running Current (Rated) Power Consumption 1,740 (450~1,950) 1,950 (450~2,300) Rated (Min.~Max.) Power Factor...
Page 46 Si04-306E Specifications 50Hz 240V Indoor Units FTXD80CV4 Model RXD80CV4 Outdoor Units Cooling Heating 8.0(0.9~8.5) 9.5 (0.9~10.2) Capacity Btu/h 27,310 (3,070~29,000) 32,420 (3,070~34,820) Rated (Min.~Max.) kcal/h 6,880 (770~7,310) 8,180 (770~8,780) Moisture Removal — Running Current (Rated) 13.9 14.0 Power Consumption 3,300 (450~3,950) 3,320 (450~3,490) Rated (Min.~Max.) Power Factor...
Page 47 Specifications Si04-306E Specifications...
Page 48: Part 3 Printed Circuit Board Connector Wiring Diagram
Si04-306E Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........38 1.1 Indoor Unit....................38 1.2 Outdoor Unit ...................40 Printed Circuit Board Connector Wiring Diagram...
Page 49: Printed Circuit Board Connector Wiring Diagram
Printed Circuit Board Connector Wiring Diagram Si04-306E 1. Printed Circuit Board Connector Wiring Diagram Indoor Unit Connectors Connector for fan motor Connector for swing motor (horizontal blades) Connector for swing motor (vertical blades) Connector for centralized control (HA) 5) S26, Connector for buzzer PCB 6) S27, S29, Connector for control PCB...
Page 50 Si04-306E Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB (indoor unit) LEDA (R2860) PCB(2): Signal Receiver PCB PCB(3): Buzzer PCB (R2861) RTH1 (R2862) PCB(4): Display PCB PCB(5): INTELLIGENT EYE sensor PCB LED1 LED2 LED3 (R2863) (R2864) Printed Circuit Board Connector Wiring Diagram...
Page 51: Outdoor Unit
Printed Circuit Board Connector Wiring Diagram Si04-306E Outdoor Unit Connectors 1) S10, AC2, Connector for terminal strip Connector for electronic expansion valve coil 3) S31, Connector for SPM 4) S33, Connector for MID 5) S34, S52, S72, S102 Connector for control PCB CN11, CN14 HAC1,...
Page 52 Si04-306E Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB (outdoor unit) FU2(3.15A) S101 (R2865) PCB(2): Power Supply PCB PCB(3): Service Monitor PCB FU1(30A) HAC1 LED A S102 (R5140) (R2866) Printed Circuit Board Connector Wiring Diagram...
Page 53 Printed Circuit Board Connector Wiring Diagram Si04-306E FU201 (3.15A) (R2868) CN11 CN14 (R2869) Printed Circuit Board Connector Wiring Diagram...
Page 54: Part 4 Function And Control
Si04-306E Part 4 Function and Control 1. Main Functions..................44 1.1 Frequency Principle................44 1.2 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing ..46 1.3 Fan Speed Control for Indoor Units............47 1.4 Programme Dry Function ...............48 1.5 Automatic Operation................49 1.6 Thermostat Control.................50 1.7 Night Set Mode..................51 1.8 INTELLIGENT EYE ................52 1.9 HOME LEAVE Operation ...............54...
Page 55: Main Functions
Main Functions Si04-306E 1. Main Functions Note: See the list of functions for the functions applicable to different models. Frequency Principle Main Control The compressor is frequency-controlled during normal operation. The target frequency is set by the following 2 parameters coming from the operating indoor unit: Parameters The load condition of the operating indoor unit The difference between the room temperature and the set temperature...
Page 56 Si04-306E Main Functions Inverter Features The inverter provides the following features: The regulating capacity can be changed according to the changes in the outside temperature and cooling/heating load. Quick heating and quick cooling The compressor rotational speed is increased when starting the heating (or cooling). This enables a quick set temperature.
Page 57: Power-Airflow Dual Flaps, Wide Angle Louvers And Auto-Swing
Main Functions Si04-306E Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing Power-airflow The large flaps send a large volume of air downwards to the floor. The flap provides an optimum control area in cooling, heating and dry mode. Dual Flaps Heating Mode During heating mode, the large flap enables direct warm air straight downwards.
Page 58: Fan Speed Control For Indoor Units
Si04-306E Main Functions Fan Speed Control for Indoor Units Control Mode The airflow rate can be automatically controlled depending on the difference between the set temperature and the room temperature. This is done through phase control and Hall IC control. For more information about Hall IC, refer to the troubleshooting for fan motor on page 113.
Page 59: Programme Dry Function
Main Functions Si04-306E Programme Dry Function Programme dry function removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and airflow volume, the temperature adjustment and fan adjustment buttons are inoperable in this mode. In Case of The microcomputer automatically sets the temperature and fan settings.
Page 60: Automatic Operation
Si04-306E Main Functions Automatic Operation Automatic Cooling / Heating Function (Heat Pump Only) When the AUTO mode is selected with the remote controller, the microcomputer automatically determines the operation mode from cooling and heating according to the room temperature and setting temperature at the time of the operation startup, and automatically operates in that mode.
Page 61: Thermostat Control
Main Functions Si04-306E Thermostat Control Thermostat control is based on the difference between the room temperature and the setpoint. Thermostat OFF Condition The temperature difference is in the zone A. Thermostat ON Condition The temperature difference is above the zone C after being in the zone A. The system resumes from defrost control in any zones except A.
Page 62: Night Set Mode
Si04-306E Main Functions Night Set Mode When the OFF timer is set, the Night Set circuit automatically activates. The Night Set circuit maintains the airflow setting made by users. The Night Set The Night Set circuit continues heating or cooling the room at the set temperature for the first Circuit 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.
Page 63: Intelligent Eye
Main Functions Si04-306E INTELLIGENT EYE This is the function that detects existence of humans in the room by a human motion sensor (INTELLIGENT EYE) and reduces the capacity when there is no human in the room in order to save electricity. Processing 1.
Page 64 Si04-306E Main Functions Since the set temperature is shifted by 2°C higher for 40 minutes, compressor speed becomes low and can realize energy saving operation. But as thermostat is prone to be off by the fact that the set temperature has been shifted, the thermostat-off action is prohibited in 40 minutes so as to prevent this phenomena.
Page 65: Home Leave Operation
Main Functions Si04-306E HOME LEAVE Operation Outline In order to respond to the customer's need for immediate heating and cooling of the room after returning home or for house care, a measure to switch the temperature and air volume from that for normal time over to outing time by one touch is provided.
Page 66: Inverter Powerful Operation
Si04-306E Main Functions 1.10 Inverter POWERFUL Operation Outline In order to exploit the cooling and heating capacity to full extent, operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency. Details of the When POWERFUL button is pushed in each operation mode, the fan speed/setting temperature will be converted to the following states in a period of 20 minutes.
Page 67: Other Functions
Main Functions Si04-306E 1.11 Other Functions 1.11.1 Hot Start Function Heat Pump Only In order to prevent the cold air blast that normally comes when heating is started, the temperature of the heat exchanger of the indoor unit is detected, and either the airflow is stopped or is made very weak thereby carrying out comfortable heating of the room.
Page 68 Si04-306E Main Functions 1.11.6 Self-Diagnosis Digital Display The microcomputer continuously monitors main operating conditions of the indoor unit, outdoor unit and the entire system. When an abnormality occur, the LCD remote controller displays error code. These indications allow prompt maintenance operations. 1.11.7 Auto-restart Function Even if a power failure (including one for just a moment) occurs during the operation, the...
Page 69: Function Of Main Structural Parts
Function of Main Structural Parts Si04-306E 2. Function of Main Structural Parts Function of Thermistor 2.1.1 Heat Pump Model Electrontic expansion valve Four way valve Compressor (R5318) Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. Set a target discharge temperature depending on the outdoor and indoor heat exchanger Exchanger temperature.
Page 70 Si04-306E Function of Main Structural Parts 2.1.2 Cooling Only Model Electrontic expansion valve Compressor (R2828) Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. Exchanger Set a target discharge temperature depending on the outdoor and indoor heat exchanger temperature.
Page 71: Control Specification
Control Specification Si04-306E 3. Control Specification Mode Hierarchy Outline There are two modes; the mode selected in user’s place (normal air conditioning mode) and forced operation mode for installation and providing service. Detail 1. For heat pump model There are following modes; stop, cooling (includes drying), heating (include defrosting) Air conditioner control mode Forced operating mode Forced cooling (for Pump Down Operation)
Page 72: Frequency Control
Si04-306E Control Specification Frequency Control Outline Frequency will be determined according to the difference between room and set temperature. The function is explained as follows. 1. How to determine frequency. 2. Frequency command from an indoor unit. (The difference between a room temperature and the temperature set by the remote controller.) 3.
Page 73 Control Specification Si04-306E 2. Determine upper limit frequency Set a minimum value as an upper limit frequency among the frequency upper limits of the following functions: Compressor protection, input current, discharge pipes, freeze prevention, dew prevention, fin thermistor temperature. 3. Determine lower limit frequency Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions: Pressure difference upkeep.
Page 74: Controls At Mode Changing / Start-Up
Si04-306E Control Specification Controls at Mode Changing / Start-up 3.3.1 Preheating Operation Outline Operate the inverter in the open phase operation with the conditions including the preheating command from the indoor, the outdoor air temperature and discharge pipe temperature. Detail Preheating ON Condition When outdoor air temperature is below 10.5ºC and discharge pipe temperature is below 10.5ºC, inverter in open phase operation starts.(The power consumption of compressor...
Page 75: Discharge Pipe Temperature Control
Control Specification Si04-306E Discharge Pipe Temperature Control Outline The discharge pipe temperature is used as the compressor's internal temperature. If the discharge pipe temperature rises above a certain level, the operating frequency upper limit is set to keep this temperature from going up further. Detail Divide the Zone Keep...
Page 76: Freeze-Up Protection Control
Si04-306E Control Specification Freeze-up Protection Control Outline During cooling operation, the signals being sent from the indoor unit allow the operating frequency limitation and then prevent freezing of the indoor heat exchanger. (The signal from the indoor unit must be divided into the zones as the followings. Detail Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 sec from...
Page 77: Fan Control
Control Specification Si04-306E Fan Control Outline Fan control is carried out with the following conditions. 1. Fan ON control for electric component cooling fan 2. Fan control when defrosting 3. Fan OFF delay when stopped 4. ON/OFF control in cooling operation 5.
Page 78: Low Hz High Pressure Limit
Si04-306E Control Specification 3.10 Low Hz High Pressure Limit Outline Heat Pump Only Set the upper limit of high pressure in a low Hz zone. Set the upper limit of the indoor heat exchanger temperature by its operating frequency of Hz. Separate into three zones, reset zone, unchanged zone and drooping zone and the frequency control must be carried out in such zones.
Page 79: Electronic Expansion Valve Control
Control Specification Si04-306E 3.12 Electronic Expansion Valve Control Outline The following items are included in the electronic expansion valve control. Electronic expansion valve is fully closed 1. Electronic expansion valve is fully closed when turning on the power. 2. Pressure equalizing control Open Control 1.
Page 80 Si04-306E Control Specification 3.12.1 Fully Closing with Power ON Initialize the electronic expansion valve when turning on the power, set the opening position and develop pressure equalizing. 3.12.2 Pressure Equalization Control When the compressor is stopped, open and close the electronic expansion valve and develop pressure equalization.
Page 81 Control Specification Si04-306E 3.12.7 Control when frequency is changed When the target discharge 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 target opening of the electronic expansion valve according to the shift. 3.12.8 Target Discharge Pipe Temperature Control Obtain the target discharge pipe temperature from the indoor and outdoor heat exchanger...
Page 82: Malfunctions
Si04-306E Control Specification 3.13 Malfunctions 3.13.1 Sensor Malfunction Detection Sensor malfunction may occur either in the thermistor or current transformer (CT) system. Relating to Thermistor Malfunction 1. Outdoor heat exchanger thermistor 2. Discharge pipe thermistor 3. Fin thermistor 4. Outside air thermistor Relating to CT Malfunction When the output frequency is more than 55 Hz and the input current is less than 1.25A, carry out abnormal adjustment.
Page 83 Control Specification Si04-306E 3.13.3 Insufficient Gas Control Outline If a power consumption is below the specified value in which the frequency is higher than the specified frequency, it must be regarded as gas insufficient. In addition to such conventional function, if the discharge temperature is higher than the target discharge pipe temperature, and the electronic expansion valve is fully open (450 pulses) more than the specified time, it is considered as an insufficient gas.
Page 84: Forced Operation Mode
Si04-306E Control Specification 3.14 Forced Operation Mode Outline Forced operating mode includes only forced cooling. Detail Forced Cooling Item Forced Cooling Forced operation 1) The outdoor unit is not abnormal allowing conditions and not in the 3-minute standby mode. 2) The operating mode of the outdoor unit is the stop mode.
Page 85: Facility Setting Switch (Cooling At Low Outdoor Temperature)
Control Specification Si04-306E 3.16 Facility Setting Switch (cooling at low outdoor temperature) Outline RKS50/60/71BVMB9, RK(X)S71B2(3)VMB models This function is limited only for facilities (the target of air conditioning is equipment (such as computer)). Never use it in a residence or office (the space where there is a human). Detail You can expand the operation range to –15°C by turning on switch B (SW4) on the PCB.
Page 86: Part 5 Operation Manual
Si04-306E Part 5 Operation Manual 1. System Configuration................76 2. Instruction....................77 2.1 Safety Precautions .................77 2.2 Names of Parts..................79 2.3 Preparation Before Operation ..............82 2.4 AUTO · DRY · COOL · HEAT · FAN Operation ........85 2.5 Adjusting the Airflow Direction..............87 2.6 POWERFUL Operation ................89 2.7 OUTDOOR UNIT QUIET Operation............90 2.8 HOME LEAVE Operation ...............91...
Page 87: System Configuration
System Configuration Si04-306E 1. System Configuration After the installation and test operation of the room air conditioner have been completed, it should be operated and handled as described below. Every user would like to know the correct method of operation of the room air conditioner, to check if it is capable of cooling (or heating) well, and to know a clever method of using it.
Page 88: Instruction
• Do not attempt to repair, relocate, modify or reinstall the air conditioner by yourself. Incorrect work will cause electric shocks, fire etc. For repairs and reinstallation, consult your Daikin dealer for advice and information. • The refrigerant used in the air conditioner is safe. Although leaks should not occur, if for some reason any refrigerant happens to leak into the room, make sure it does not come in contact with any flame as of gas heaters, kerosene heaters or gas range.
Page 89: Installation Site
Instruction Si04-306E • Do not stand or sit on the outdoor unit. Do not place any object on the unit to avoid injury, do not remove the fan guard. • Do not place anything under the indoor or outdoor unit that must be kept away from moisture. In certain conditions, moisture in the air may condense and drip.
Page 90: Names Of Parts
Si04-306E Instruction Names of Parts Names of parts Indoor Unit The illustration shows a 50-class unit Main unit control panel Operation Manual...
Page 91 Instruction Si04-306E Outdoor Unit Indoor Unit 1. Air filter 14. Indoor Unit ON/OFF switch: • Push this switch once to start operation. 2. Air purifying filter with photocatalytic Push once again to stop it. deodorizing function: • The operation mode refer to the following table. •...
Page 92 Si04-306E Instruction Remote Controller HOME LEAVE ON/OFF TEMP POWERFUL MODE QUIET SENSOR SWING CANCEL TIMER < > ARC433A21, A22 1. Signal transmitter: 8. QUIET button: for OUTDOOR UNIT • It sends signals to the indoor unit. QUIET operation (page 15.) 2.
Page 93: Preparation Before Operation
Instruction Si04-306E Preparation Before Operation Preparation Before Operation To set the batteries Position + and – correctly! 1. Press with a finger and slide the front cover to take it off. 2. Set two dry batteries (AAA). 3. Set the front cover as before. ATTENTION About batteries •...
Page 94 Si04-306E Instruction Preparation Before Operation To operate the remote controller • To use the remote controller, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote controller, such as a curtain, the unit will not operate. •...
Page 95 Instruction Si04-306E To set the clock 1. Press “CLOCK button”. is displayed. blinks. 2. Press “TIMER setting button” to set the clock to the present time. Holding down “ ” or “ ” button HOME LEAVE ON/OFF rapidly increases or decreases the time TEMP POWERFUL display.
Page 96: Auto · Dry · Cool · Heat · Fan Operation
Si04-306E Instruction AUTO · DRY · COOL · HEAT · FAN Operation OPERATION AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode.
Page 97 Instruction Si04-306E To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or HEAT or COOL or FAN mode Five levels of airflow rate setting from “ ” to “ ” plus “ ” “ ”...
Page 98: Adjusting The Airflow Direction
Si04-306E Instruction Adjusting the Airflow Direction Adjusting the Airflow Direction You can adjust the airflow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button ”. • “ ” is displayed on the LCD. HOME LEAVE 2.
Page 99 Instruction Si04-306E To 3-D Airflow 1. 3. Press the “SWING button ” and the “SWING button ”: the “ ” and “ ” display will light up and the flap and louvers will move in turn. To cancel 3-D Airflow 2.
Page 100: Powerful Operation
Si04-306E Instruction POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity. To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20 minutes. Then the system automatically operates HOME LEAVE again with the settings which were used ON/OFF...
Page 101: Outdoor Unit Quiet Operation
Instruction Si04-306E OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. To start OUTDOOR UNIT QUIET operation 1.
Page 102: Home Leave Operation
Si04-306E Instruction HOME LEAVE Operation HOME LEAVE Operation HOME LEAVE operation is a function which allows you to record your preferred temperature and airflow rate settings. To start HOME LEAVE operation 1. Press “HOME LEAVE button”. • The HOME LEAVE lamp lights up. 1, 2 HOME LEAVE ON/OFF...
Page 103 Instruction Si04-306E What’s the HOME LEAVE operation Is there a set temperature and airflow rate which is most comfortable, a set temperature and airflow rate which you use the most? HOME LEAVE operation is a function that allows you to record your favorite set temperature and airflow rate.
Page 104: Intelligent Eye Operation
Si04-306E Instruction INTELLIGENT EYE Operation INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “SENSOR button”. To cancel the HOME LEAVE INTELLIGENT EYE ON/OFF TEMP POWERFUL operation 2. Press “SENSOR button” again. MODE [EX.] QUIET...
Page 105 Instruction Si04-306E “INTELLIGENT EYE” is useful for Energy Saving Energy saving operation • Change the temperature –2°C in heating / +2°C in cooling / +1°C in dry mode from set temperature. • Decrease the airflow rate slightly in fan operation. (In FAN mode only) Notes on “INTELLIGENT EYE”...
Page 106: Timer Operation
Si04-306E Instruction 2.10 TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. To use OFF TIMER operation •...
Page 107 Instruction Si04-306E To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time (page 9.). 1. Press “ON TIMER button”. is displayed. blinks. 2. Press “TIMER Setting button” until the time setting reaches the point you like.
Page 108: Care And Cleaning
Si04-306E Instruction 2.11 Care and Cleaning CARE Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. Front grille 1.
Page 109 Instruction Si04-306E Filters 1. Open the front grille. (page 22) 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the air tabs (3 tabs at top) purifying filter with photocatalytic deodorizing function.
Page 110 Si04-306E Instruction Check 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 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. •...
Page 111: Troubleshooting
Instruction Si04-306E 2.12 Troubleshooting Trouble Shooting These cases are not troubles. The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Explanation Operation does not start soon. • This is to protect the air conditioner. •...
Page 112 Si04-306E Instruction Check again. Please check again before calling a repair person. Case Check The air conditioner does not • Hasn’t a breaker turned OFF or a fuse blown? operate. • Isn’t it a power failure? (OPERATION lamp is off) •...
Page 113 Instruction Si04-306E Call the service shop immediately. WARNING When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner. Do not attempt to repair or modify the air conditioner by yourself.
Page 114: Part 6 Service Diagnosis
Si04-306E Part 6 Service Diagnosis 1. Caution for Diagnosis................104 2. Problem Symptoms and Measures .............105 3. Service Check Function ..............106 4. Troubleshooting ..................109 4.1 Error Codes and Description ..............109 4.2 Indoor Unit PCB Abnormality ...............110 4.3 Freeze-up Protection Control or High Pressure Control.......111 4.4 Fan Motor (DC Motor) or Related Abnormality........113 4.5 Thermistor or Related Abnormality (Indoor Unit)........115 4.6 Signal Transmission Error (between Indoor and Outdoor Units)..116...
Page 115: Caution For Diagnosis
Caution for Diagnosis Si04-306E 1. Caution for Diagnosis The Operation lamp flashes when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation. 2.
Page 116: Problem Symptoms And Measures
Si04-306E Problem Symptoms and Measures Problem Symptoms and Measures Symptom Check Item Details of Measure Reference Page None of the units operates. Check the power supply. Check to make sure that the rated voltage is — supplied. Check the type of the indoor units. Check to make sure that the indoor unit type is —...
Page 117: Service Check Function
Service Check Function Si04-306E Service Check Function In the ARC433A series remote controller, the temperature display sections on the main unit indicate corresponding codes. 1. When the timer cancel button is held down for 5 seconds, a “ 00 ” indication flashes on the Check Method 1 temperature display section.
Page 118 Si04-306E Service Check Function Check Method 2 1. Enter the diagnosis mode. Press the 3 buttons (TEMP▲,TEMP▼, MODE) simultaneously. (R4272) The digit of the number of tens blinks. ★ Try again from the start when the digit does not blink. (R4273) 2.
Page 119 Service Check Function Si04-306E 5. Press the TEMP button. Press TEMP▲ or TEMP▼ and change the digit until you hear the sound of “beep”. (R4277) 6. Diagnose by the sound. ★ “pi” : The both numbers of tens and units do not accord with the error code. ★...
Page 120: Troubleshooting
Si04-306E Troubleshooting Troubleshooting Error Codes and Description Reference Code Indication Description Page System — Normal U0★ Insufficient gas Low-voltage detection Signal transmission error (between indoor and outdoor units) Indoor Indoor unit PCB abnormality Unit Freeze-up protection control or high pressure control Fan motor or related abnormality Heat exchanger thermistor abnormality Room temperature thermistor abnormality...
Page 121: Indoor Unit Pcb Abnormality
Troubleshooting Si04-306E Indoor Unit PCB Abnormality Remote Controller Display Method of Evaluation of zero-cross detection of power supply by indoor unit. Malfunction Detection Malfunction When there is no zero-cross detection in approximately 10 continuous seconds. Decision Conditions Supposed Faulty indoor unit PCB Causes Faulty connector connection Troubleshooting...
Page 122: Freeze-Up Protection Control Or High Pressure Control
Si04-306E Troubleshooting Freeze-up Protection Control High Pressure Control Remote Controller Display Method of High pressure control (heat pump model only) Malfunction During heating operations, the temperature detected by the indoor heat exchanger thermistor is used for the high pressure control (stop, outdoor fan stop, etc.) Detection The freeze-up protection control (operation halt) is activated during cooling operation according to the temperature detected by the indoor unit heat exchanger thermistor.
Page 123 Troubleshooting Si04-306E Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Check the air passage. Refer to P.144 Is there any short-circuit? Provide sufficient air passage. Check the intake air filter. Is it very dirty? Clean the air filter.
Page 124: Fan Motor (Dc Motor) Or Related Abnormality
Si04-306E Troubleshooting Fan Motor (DC Motor) or Related Abnormality Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Detection Malfunction 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.
Page 125 Troubleshooting Si04-306E Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.01 Turn off power supply Refer to P.142 and rotate fan by hand. Does fan rotate Replace fan motor. smoothly? Turn power ON and operate fan.
Page 126: Thermistor Or Related Abnormality (Indoor Unit)
Si04-306E Troubleshooting Thermistor or Related Abnormality (Indoor Unit) Remote Controller Display Method of The temperatures detected by the thermistors are used to determine thermistor errors. Malfunction Detection Malfunction When the thermistor input is more than 4.96 V or less than 0.04 V during compressor operation ∗...
Page 127: Signal Transmission Error (Between Indoor And Outdoor Units)
Troubleshooting Si04-306E Signal Transmission Error (between Indoor and Outdoor Units) Remote Controller Display Method of The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is checked whether it is normal. Malfunction Detection Malfunction When the data sent from the outdoor unit cannot be received normally, or when the content of the data is abnormal.
Page 128 Si04-306E Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.10 Check the indoor unit-outdoor unit Refer to P.147 connection wires. Is there any wiring error? Correct the indoor unit-outdoor unit connection wires.
Page 129: Ol Activation (Compressor Overload)
Troubleshooting Si04-306E OL Activation (Compressor Overload) Remote Controller Display Method of A compressor overload is detected through compressor OL. Malfunction Detection Malfunction If the compressor OL is activated twice, the system will be shut down. The error counter will reset itself if this or any other error does not occur during the following Decision 60-minute compressor running time (total time).
Page 130: Compressor Lock
Si04-306E Troubleshooting Compressor Lock Remote Controller Display Method of A compressor lock is detected by checking the compressor running condition through the Malfunction position detection circuit. Detection Malfunction The position detection circuit detects a compressor frequency of below 10 Hz for 20 seconds or a frequency of above 160 Hz.
Page 131: Dc Fan Lock
Troubleshooting Si04-306E DC Fan Lock Remote Controller Display Method of A fan motor or related error is detected by checking the high-voltage fan motor rpm being Malfunction detected by the Hall IC. Detection Malfunction The fan does not start in 30 seconds even when the fan motor is running. The system will be shut down if the error occurs 16 times.
Page 132: Input Over Current Detection
Si04-306E Troubleshooting 4.10 Input Over Current Detection Remote Controller Display Method of An input over-current is detected by checking the input current value being detected by CT with Malfunction the compressor running. Detection Malfunction The following CT input with the compressor running continues for 2.5 seconds. CT input : Above 20 A Decision The system will be shut down if the error occurs 16 times.
Page 133 Troubleshooting Si04-306E Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.07 ∗ An input over-current may result from wrong internal wiring. If the wires have been disconnected and reconnected for part replacement, for example, and the system is interrupted by an input over-current, Refer to P.145 check the wires again.
Page 134: Four Way Valve Abnormality
Si04-306E Troubleshooting 4.11 Four Way Valve Abnormality Remote Controller Display Method of The room temperature thermistor, the indoor unit heat exchanger thermistor, the outdoor Malfunction temperature thermistor and the outdoor unit heat exchanger thermistor are checked to see if they function within their normal ranges in the operating mode. Detection Malfunction A following condition continues over 1 minute after operating 10 minutes.
Page 135 Troubleshooting Si04-306E Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.05 Refer to P.143 Four way valve coil Correct. disconnected (loose)? Check No.06 Refer to P.144 Harness out of connector? Reconnect.
Page 136: Discharge Pipe Temperature Control
Si04-306E Troubleshooting 4.12 Discharge Pipe Temperature Control Remote Controller Display Method of The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the Malfunction temperature being detected by the discharge pipe thermistor. Detection Malfunction If a stop takes place 6 times successively due to abnormal discharge pipe temperature, the system will be shut down.
Page 137: High Pressure Control In Cooling
Troubleshooting Si04-306E 4.13 High Pressure Control in Cooling Remote Controller Display Method of High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the Malfunction temperature being sensed by the heat exchanger thermistor exceeds the limit. Detection Malfunction Activated when the temperature being sensed by the heat exchanger thermistor rises above 60°C.
Page 138 Si04-306E Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.04 Refer to P.142 Check the installation space. Check No.06 Check No. 07 Abnormal Refer to P.144 Change the air outlet grille Check the installation position.
Page 139: Position Sensor Abnormality
Troubleshooting Si04-306E 4.14 Position Sensor Abnormality Remote Controller Display Method of A compressor startup failure is detected by checking the compressor running condition through Malfunction the position detection circuit. Detection Malfunction The compressor fails to start in about 15 seconds after the compressor run command signal is sent.
Page 140: Ct Or Related Abnormality
Si04-306E Troubleshooting 4.15 CT or Related Abnormality Remote Controller Display Method of A CT or related error is detected by checking the compressor running frequency and CT- Malfunction detected input current. Detection Malfunction The compressor running frequency is below 55 Hz and the CT input is below 0.1 V. (The input current is also below 1.25 A.) Decision If this error repeats 4 times, the system will be shut down.
Page 141 Troubleshooting Si04-306E Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.12 Refer to P.148 Turn off the power and turn it on again. Get the system started. ∗...
Page 142: Thermistor Or Related Abnormality (Outdoor Unit)
Si04-306E Troubleshooting 4.16 Thermistor or Related Abnormality (Outdoor Unit) P4 , J3 , J6 , H9 Remote Controller Display Method of This type of error is detected by checking the thermistor input voltage to the microcomputer. Malfunction [A thermistor error is detected by checking the temperature.] Detection Malfunction The thermistor input is above 4.96 V or below 0.04 V with the power on.
Page 143 Troubleshooting Si04-306E Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Refer to P.144 Turn on the power again. Error displayed Reconnect. again on remote controller? Connector or thermistor Reconnect.
Page 144: Electrical Box Temperature Rise
Si04-306E Troubleshooting 4.17 Electrical Box Temperature Rise Remote Controller Display Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor off. Detection Malfunction With the compressor off, the radiation fin temperature is above 80°C (above 75°C in the case of 7.1kW class).
Page 145 Troubleshooting Si04-306E Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 WARNING Turn off the power and turn it on Refer to P.144 again. To cool down the electricals, the outdoor unit fan gets started when the radiation fin temperature rises above 80˚C and stops itself when it...
Page 146: Radiation Fin Temperature Rise
Si04-306E Troubleshooting 4.18 Radiation Fin Temperature Rise Remote Controller Display Method of A radiation fin temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor on. Detection Malfunction If the radiation fin temperature with the compressor on is above 90°C, If a radiation fin temperature rise takes place 4 times successively, the system will be shut Decision down.
Page 147 Troubleshooting Si04-306E Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Refer to P.144 Turn off the power and turn it on again to get the system started. Check No.07 Refer to P.145 Error displayed again?
Page 148: Output Over Current Detection
Si04-306E Troubleshooting 4.19 Output Over Current Detection Remote Controller Display Method of An output over-current is detected by checking the current that flows in the inverter DC section. Malfunction Detection Malfunction A position signal error occurs while the compressor is running. A speed error occurs while the compressor is running.
Page 149 Troubleshooting Si04-306E Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.07 ∗ An output over-current may result from wrong internal wiring. If the wires have been disconnected and Refer to P.145 reconnected for part replacement, for example, and the system is interrupted by an output over-current, check the wires again.
Page 150: Insufficient Gas
Si04-306E Troubleshooting 4.20 Insufficient Gas Remote Controller Display Method of Gas shortage detection I : Malfunction A gas shortage is detected by checking the CT-detected input current value and the compressor running frequency. Detection Gas shortage detection II : A gas shortage is detected by checking the difference between indoor unit heat exchanger temperature and room temperature as well as the difference between outdoor unit heat exchanger temperature and room temperature.
Page 151 Troubleshooting Si04-306E Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.04 Refer to P.142 Any thermistor Replace in position. disconnected? * Discharge pipe thermistor * Indoor / outdoor unit heat exchanger thermistor Check No.06 * Room temperature thermistor * Outdoor air thermistor...
Page 152: Low-Voltage Detection
Si04-306E Troubleshooting 4.21 Low-voltage Detection Remote Controller Display Method of An abnormal voltage rise or drop is detected by checking the detection circuit or DC voltage Malfunction detection circuit. Detection Malfunction An over-voltage signal is fed from the over-voltage detection circuit to the microcomputer, or the voltage being detected by the DC voltage detection circuit is judged to be below 150 V Decision for 0.1 second.
Page 153: Check
Check Si04-306E 5. Check How to Check 5.1.1 Fan Motor Connector Output Check Check No.01 1. Check connector connection. 2. Check motor power supply voltage output (pins 4-7). 3. Check motor control voltage (pins 4-3). 4. Check rotation command voltage output (pins 4-2). 5.
Page 154 Si04-306E Check 5.1.3 Four Way Valve Performance Check Check No.05 Turn off the power and turn it on again. ∗ Four way valve coil Start the heating-mode run. Cooling / dry : No continuity Heating : Continuity voltage at DC 180- Replace the outdoor unit 220 V with compressor PCB.
Page 155: Thermistor Resistance Check
Check Si04-306E 5.1.4 Thermistor Resistance Check Check No.06 Remove the connectors of the thermistors 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.
Page 156: Installation Condition Check
Si04-306E Check 5.1.5 Installation Condition Check Check No.07 Installation condition check Check the Abnormal allowable dimensions Change the position of the air of the air suction and discharge grille or the discharge area. installation location. Normal Does the discharged air from other outdoor unit cause an Change the position of the air increase of the suction...
Page 157: Discharge Pressure Check
Check Si04-306E 5.1.6 Discharge Pressure Check Check No.08 Discharge pressure check High Replace the compressor. Is the stop valve open? Open the stop valve. Is the connection pipe Replace the pipe installed at deformed? the site. Dirty Are the heat exchanger Clean.
Page 158 Si04-306E Check 5.1.8 Power Supply Waveforms Check Check No.10 Measure the power supply waveform between pins 1 and 2 on the terminal board, and check the waveform disturbance. Check to see if the power supply waveform is a sine wave (Fig.1). Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2) [Fig.1] [Fig.2]...
Page 159: Power Transistor Check
Check Si04-306E 5.1.10 Capacitor Voltage Check Check No.12 Before this checking, be sure to check the main circuit for short-circuit. Checking the capacitor voltage With the circuit breaker still on, measure the voltage according to the drawing of the model in question.
Page 160: Main Circuit Electrolytic Capacitor Check
Si04-306E Check 5.1.12 Main Circuit Electrolytic Capacitor Check Check No.14 Checking the main circuit electrolytic capacitor Never touch any live parts for at least 10 minutes after turning off the circuit breaker. If unavoidably necessary to touch a live part, make sure there is no DC voltage using the tester.
Page 161 Check Si04-306E Service Diagnosis...
Page 162: Part 7 Removal Procedure
Si04-306E Part 7 Removal Procedure 1. Indoor Unit...................152 1.1 Removal of the Air Filter / Front Panel ..........152 1.2 Removal of the Front Grille ..............155 1.3 Removal of the Horizontal Blades / Vertical Blades ......157 1.4 Removal of the Electrical Box / PCB / Swing Motor ......159 1.5 Removal of the Heat Exchanger ............165 1.6 Removal of the Fan Rotor / Fan Motor..........168 2.
Page 163: Indoor Unit
Indoor Unit Si04-306E 1. Indoor Unit Removal of the Air Filter / Front Panel Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Features When the signal receiver catches a signal from the remote controller, it...
Page 164 Si04-306E Indoor Unit Step Procedure Points The right and left filters are interchangeable. Insert the air filters along grooves when installing. Set the air filters with displaying “FRONT” on the front side. Insert two claws of the air filter completely. 3.
Page 165 Indoor Unit Si04-306E Step Procedure Points 4. Remove the front panel. While opening the front panel further than it stops, release both axes and remove the front panel. Slide the front panel side to side to release each axis. Align the right and left axes with grooves in turn and insert them to the end when installing.
Page 166: Removal Of The Front Grille
Si04-306E Indoor Unit Removal of the Front Grille 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 service cover. Loosen the screw and remove the service cover by the knob.
Page 167 Indoor Unit Si04-306E Step Procedure Points Undo the three hooks The front grille has three on the top of the front hooks on the center and the grille. both sides of the upper part. Refer to the removal procedure in a reverse way when reassembling.
Page 168: Removal Of The Horizontal Blades / Vertical Blades
Si04-306E Indoor Unit Removal of the Horizontal Blades / Vertical Blades 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 horizontal blades. Open the horizontal It has no fixing screws inside blades.
Page 169 Indoor Unit Si04-306E Step Procedure Points 2. Remove the vertical blades. Undo the right and left pivots. Undo the three claws. Pull the vertical blades rightwards and remove Removal Procedure...
Page 170: Removal Of The Electrical Box / Pcb / Swing Motor
Si04-306E Indoor Unit Removal of the Electrical Box / PCB / Swing Motor 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 front grille. Parts layout 2.
Page 171 Indoor Unit Si04-306E Step Procedure Points 4. Remove the electrical box. Disconnect the four You can remove the connection wirings. electrical box without Loosen the screw and detaching the terminal strip remove the terminal board. strip board. Screw: M4×25 Disconnect the connectors for fan motor (S1).
Page 172 Si04-306E Indoor Unit Step Procedure Points Dislocate the electrical The electrical box has a claw box to the left and undo on its back. the back claw. Pull the electrical box Hook the back claw of the out towards you. electrical box when reassembling.
Page 173 Indoor Unit Si04-306E Step Procedure Points Press the receiver units Release the claws on the down and release the upper side. claws on the upper side, and then undo the claws on the lower side. Cut the clamp. The receiver units Remove the receiver units contain four PCBs.
Page 174 Si04-306E Indoor Unit Step Procedure Points 5. Remove the control PCB. Undo the two claws on the lower side, and then the two claws on the upper side. Remove the control PCB. Control PCB (indoor unit) S1: connector for the fan motor S21: S26: connector for the...
Page 175 Indoor Unit Si04-306E Step Procedure Points 7. Remove the swing motor for vertical blades. Release the swing axis Releasing the swing axis on the right side. Loosen the two screws and detach the swing motor assembly. Loosen the two screws Six claws hold the assembly.
Page 176: Removal Of The Heat Exchanger
Si04-306E Indoor Unit Removal of the Heat Exchanger Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the electrical Caution box. If gas leaks, repair the spot of 1.
Page 177 Indoor Unit Si04-306E Step Procedure Points 2. Remove the indoor unit. Detach the indoor unit from the installation plate. 3. Remove the piping fixture. Release the claw on the upper side of the piping fixture on the back of the unit. 4.
Page 178 Si04-306E Indoor Unit Step Procedure Points Release the claws on the left side. Push the fixing claws on the right side and release. Pull the heat exchanger Caution to the front side and When removing or undo the claws reinstalling heat exchanger, completely, and then lift be sure to wear protective gloves or wrap the heat...
Page 179: Removal Of The Fan Rotor / Fan Motor
Indoor Unit Si04-306E Removal of the Fan Rotor / Fan Motor 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 right side panel. Loosen the two screws. You can remove the fan rotor without detaching the right side panel.
Page 180 Si04-306E Indoor Unit Step Procedure Points 3. Remove the fan motor. Remove the motor. Reassembling the fan motor (1) When reassembling the fan rotor, provide as much as 5mm of play between the side face of the rotor and the bottom frame.
Page 181: Outdoor Unit
Outdoor Unit Si04-306E 2. Outdoor Unit 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. Remove the panels and plates. Loosen the four screws and lift the panel.
Page 182 Si04-306E Outdoor Unit Step Procedure Points The front grille has four claws. Slide the discharge grille upwards and remove it. Loosen the six screws of the front panel. Push the front panel and undo the claw. Lift the clamp plate remove it.
Page 183 Outdoor Unit Si04-306E Step Procedure Points Undo the right side Lift the front panel and claw, and then the left remove it while pushing the side claws. right side panel inwards. Remove the front panel. Lift the front panel and undo the left side claws.
Page 184 Si04-306E Outdoor Unit Step Procedure Points 2. Remove the stop valve cover. Loosen the screw of the stop valve cover. Pull down the stop valve cover to undo the claws and remove it. The stop valve cover has six claws. (R2687) Removal Procedure...
Page 185: Removal Of The Fan Motor / Propeller Fan
Outdoor Unit Si04-306E Removal of the Fan Motor / Propeller Fan Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the top panel and the front panel. Shelter 1.
Page 186 Si04-306E Outdoor Unit Step Procedure Points 2. Remove the motor. Disconnect the connector for fan motor (S70). The illustration shows arrangement of the fan motor lead wire. Removal Procedure...
Page 187 Outdoor Unit Si04-306E Step Procedure Points Unscrew the washer- fitted nut (M10) of the propeller fan with a spanner. Align mark of the propeller fan with D-cut section of the motor shaft when reassembling. Remove the four screws from the motor.
Page 188 Si04-306E Outdoor Unit Step Procedure Points Pull the fan motor out. Put the lead wire through the back of the motor when reassembling. (so as not to be entangled with the propeller fan) (R2697) Removal Procedure...
Page 189: Removal Of The Pcb / Electrical Box
Outdoor Unit Si04-306E Removal of the Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the top panel and the front panel. 1. Remove the right side Terminal strip number panel.
Page 190 Si04-306E Outdoor Unit Step Procedure Points Insert the two claws of the lower part and the one claw of the upper back when Claw reassembling. (R2701) Claws (R2702) 2. Disconnect harnesses. Loosen the fixing screw Service monitor PCB of the cable way board.
Page 191 Outdoor Unit Si04-306E Step Procedure Points Push the claw up to release the cable way board. Open the cable way board. Disconnect the Power supply PCB harnesses from the V3(varistor) HAC1 power supply PCB. (black) ···· to the terminal strip (yellow / green) ····...
Page 192 Si04-306E Outdoor Unit Step Procedure Points Loosen the screw of the control PCB. Undo the two claws and release the control PCB from the ditch of the front side. Disconnect the harnesses while opening the control PCB. S10: to the terminal strip AC2: to the terminal strip...
Page 193 Outdoor Unit Si04-306E Step Procedure Points Disconnect the connectors. S31: to the SPM S32: to the SPM S33: to the MID S71: to the MID S91: fin thermistor Control PCB (outdoor unit) S10: to the terminal strip S20: electronic expansion valve S31: to CN14 of the...
Page 194 Si04-306E Outdoor Unit Step Procedure Points Disconnect the relaying wire connector for the compressor. Release the clamp by pliers. (R2715) Disconnect the reactor harness. Removal Procedure...
Page 195 Outdoor Unit Si04-306E Step Procedure Points Pull the clamp and draw the thermistor harness out from the back of the electrical box. Loosen the screw of the electrical box. Removal Procedure...
Page 196 Si04-306E Outdoor Unit Step Procedure Points Release the clamp of the four way valve harness. (R2720) Lift the electrical box and remove it. Removal Procedure...
Page 197: Removal Of The Reactor
Outdoor Unit Si04-306E Removal of the Reactor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the electrical box. 1. Remove the partition plate. Release the clamp by pliers.
Page 198 Si04-306E Outdoor Unit Step Procedure Points Lift the partition plate and remove it. Loosen the screw. Slide the reactor remove it from the partition plate. Removal Procedure...
Page 199: Removal Of The Sound Blanket
Outdoor Unit Si04-306E Removal of the Sound Blanket Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Disconnect the harness of each thermistor. Release the discharge Pay attention to the direction pipe thermistor.
Page 200 Si04-306E Outdoor Unit Step Procedure Points Remove the sound Since the piping ports on the blanket (side-outer). sound blanket (side-outer) are torn easily, remove the blanket carefully. Remove the sound blanket (top-upper). Remove the sound blanket (top-lower). Remove the sound Since the piping ports on the blanket (side-inner).
Page 201: Removal Of The Four Way Valve
Outdoor Unit Si04-306E Removal of the Four Way Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Loosen the screw of the Provide a protective sheet or four way valve coil.
Page 202: Removal Of The Electronic Expansion Valve
Si04-306E Outdoor Unit Removal of the Electronic Expansion Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the electronic expansion valve coil. Remove the sheets of putty.
Page 203: Removal Of The Compressor
Outdoor Unit Si04-306E Removal of the Compressor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the terminal cover. Disconnect the lead Be careful so as not to burn wires of the the compressor terminals or compressor.
Page 204 Si04-306E Outdoor Unit Step Procedure Points Unscrew the nut of the compressor. Remove the putty of the accumulator. Before working, Warning make sure that the Ventilate when refrigerant refrigerant is empty leaks during the work. in the circuit. (If refrigerant contacts fire, it Be sure to apply will cause to arise toxic gas.) nitrogen...
Page 205 Outdoor Unit Si04-306E Removal Procedure...
Page 206: Part 8 Others
Si04-306E Part 8 Others 1. Others ....................196 1.1 Test Run from the Remote Controller ..........196 1.2 Jumper Settings ...................197 1.3 Application of Silicon Grease to a Power Transistor and a Diode Bridge..................198 Others...
Page 207: Others
Others Si04-306E 1. Others Test Run from the Remote Controller For Heat pump In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable temperature. Trial operation may be disabled in either mode depending on the room temperature. After trial operation is complete, set the temperature to a normal level.
Page 208: Jumper Settings
Si04-306E Others Jumper Settings 1.2.1 When Two Units are Installed in One Room When two indoor units are installed in one room, the two wireless remote controllers can be set for different addresses. How to set the different addresses Control PCB of the indoor unit (1) Remove the front grille.
Page 209: Application Of Silicon Grease To A Power Transistor And A Diode Bridge
Others Si04-306E Application of Silicon Grease to a Power Transistor Diode Bridge Applicable All outdoor units using inverter type compressor for room air conditioner. Models When the printed circuit board of an outdoor unit is replaced, it is required that silicon grease (*1) is certainly applied to the heat radiation part (the contact point to the heat radiation fin) of the power transistor and diode bridge.
Page 210: Part 9 Appendix
Si04-306E Part 9 Appendix 1. Piping Diagrams..................200 1.1 Indoor Units ..................200 1.2 Outdoor Units ..................201 2. Wiring Diagrams..................207 2.1 Indoor Units ..................207 2.2 Outdoor Units ..................210 Appendix...
Page 211: Piping Diagrams
Piping Diagrams Si04-306E Piping Diagrams Indoor Units FTK(X)S50/60BVMA, FTKS50BVMA8, FTKS71BVMA, FTKS71BVMB FTK(X)S50/60BVMB, FT(Y)S50/60BVMB, FTKD60BVM, FTKD60BVMA, FTKD60BVMT, ATXS50CVMB, ATXS50DVMB FTKD18BVMS, FTKS71BAVMB FTKD50BVM, FTK(X)D50BVMA, FTK(X)D50BVMT, FTXD50BV4 INDOOR UNIT INDOOR UNIT ( 7.9CuT ) ( 7.9CuT ) HEAT EXCHANGER HEAT EXCHANGER THERMISTOR ON HEAT EXCH. THERMISTOR ON HEAT EXCH.
Page 212: Outdoor Units
Si04-306E Piping Diagrams Outdoor Units 1.2.1 Cooling Only RKS50BVMA, RKS50BVMG, RKS50BVMB(9), RKS50B2VMB, RS50B(2)VMB OUTDOOR UNIT HEAT EXCHANGER OUTDOOR AIR TEMPERATURE THERMISTOR 7.9CuT 7.9CuT 12.7CuT CAPILLARY TUBE 1 7.9CuT MUFFLER 7.9CuT WITH REFRIGERANT FLOW FILTER 6.4CuT 7.9CuT COOLING HEAT EXCHANGER CAPILLARY TUBE 2 THERMISTOR 7.9CuT CAPILLARY TUBE 3...
Page 213 Piping Diagrams Si04-306E RKS71BVMA, RKS71BVMB(9), RKS71B2VMB, RKS71B3VMB OUTDOOR UNIT HEAT EXCHANGER OUTDOOR AIR TEMPERATURE THERMISTOR 7. 9CuT 7. 9CuT 7. 9CuT 12. 7CuT 7. 9CuT CAPILLARY TUBE 1 7. 9CuT MUFFLER 7. 9CuT WITH 7. 9CuT 7. 9CuT REFRIGERANT FLOW FILTER CAPILLARY TUBE 2 6.
Page 214 Si04-306E Piping Diagrams RKD60BVM, RKD60BVMA, RKD60BVMT, RKD18BVMS OUTDOOR UNIT HEAT EXCHANGER OUTDOOR AIR TEMPERATURE THERMISTOR 7.9CuT 7.9CuT 7.9CuT 12.7CuT 7.9CuT CAPILLARY TUBE 1 7.9CuT MUFFLER 7.9CuT WITH 7.9CuT 7.9CuT REFRIGERANT FLOW FILTER CAPILLARY TUBE 2 6.4CuT COOLING 7.9CuT CAPILLARY TUBE 3 7.9CuT HEAT 7.9CuT...
Page 215: Heat Pump
Piping Diagrams Si04-306E 1.2.2 Heat Pump RXS50BVMA, RXS50B(2)VMB, RYS50B(2)VMB, ARXS50C(2)VMB OUTDOOR UNIT HEAT EXCHANGER OUTDOOR AIR TEMPERATURE THERMISTOR 7.9CuT 12.7CuT 7.9CuT CAPILLARY TUBE 1 7.9CuT MUFFLER 7.9CuT WITH REFRIGERANT FLOW FILTER 6.4CuT 7.9CuT COOLING HEAT EXCHANGER CAPILLARY TUBE 2 THERMISTOR HEATING 7.9CuT CAPILLARY TUBE 3...
Page 216 Si04-306E Piping Diagrams RXS71BVMA, RXS71BVMB, RXS71B2VMB, RXS71B3VMB OUTDOOR UNIT HEAT EXCHANGER OUTDOOR AIR TEMPERATURE THERMISTOR 7. 9CuT 7. 9CuT 7. 9CuT 12. 7CuT 7. 9CuT CAPILLARY TUBE 1 7. 9CuT MUFFLER 7. 9CuT WITH 7. 9CuT 7. 9CuT REFRIGERANT FLOW FILTER CAPILLARY TUBE 2 6.
Page 217 Piping Diagrams Si04-306E RXD60BVMA, RXD60BVMT OUTDOOR UNIT HEAT EXCHANGER OUTDOOR AIR TEMPERATURE THERMISTOR 7.9CuT 7.9CuT 7.9CuT 12.7CuT 7.9CuT CAPILLARY TUBE 1 7.9CuT 7.9CuT MUFFLER 7.9CuT WITH 7.9CuT REFRIGERANT FLOW FILTER CAPILLARY TUBE 2 6.4CuT COOLING 7.9CuT CAPILLARY TUBE 3 7.9CuT HEATING HEAT 7.9CuT...
Page 218: Wiring Diagrams
Si04-306E Wiring Diagrams Wiring Diagrams Indoor Units FTKS50BVMA(8), FTXS50BVMA, FTK(X)S50BVMB, ATXS50CVMB, ATXS50DVMB, FTXD50BV4 FIELD WIRING. PCB3 PCB1 RECTIFIER 3.15A OUTDOOR t° CAUTION TRANSMISSION NOTE THAT OPERATION WILL CIRCUIT RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS PCB4 TURNED OFF AND THEN BACK ON AGAIN.
Page 219 Wiring Diagrams Si04-306E FT(Y)S50BVMB FIELD WIRING. PCB3 PCB1 RECTIFIER 3.15A OUTDOOR t° TRANSMISSION CAUTION CIRCUIT NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF PCB4 THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN. LED1 LED2 : FRAME GROUND : FUSE H1~H3 : HARNESS...
Page 220 Si04-306E Wiring Diagrams FTKD18/24/28BVMS Appendix...
Page 221: Outdoor Units
Wiring Diagrams Si04-306E Outdoor Units RKS50/60/71BVMA, RKS50BVMG, RKS50/60/71BVMB(9), RS50/60B(2)VMB, RKS50/60/71B2VMB RKD50/60/71BVM, RKD50/60/71BVMA, RKD50/60/71BVMT, RKS71B3VMB PCB2 FU201 3.15A MRM20 HAC1 MRM10 X11A CN11 R12T CN14 3.15A TO INDOOR UNIT t° PCB1 POWER SUPPLY S101 ~50Hz 220-240V ~60Hz 220-230V FIELD WIRING indoor t°...
Page 222 Si04-306E Wiring Diagrams RKD18/24/28BVMS Appendix...
Page 223 Wiring Diagrams Si04-306E Appendix...
Page 224: Index
Si04-306E Index Numerics check No.07 ............145 check No.08 ............146 00 .................109 check No.09 ............146 3-D airflow ..............46 check No.10 ............147 3-minute standby ..........57, 63 check No.11 ............147 check No.12 ............148 check No.13 ............148 A1 .................110 check No.14 ............
Page 225 Si04-306E C9 ..............115 H6 ................ 128 E5 ..............118 H8 ................ 129 E6 ..............119 H9 ................ 131 E7 ..............120 HA ..............38, 163 E8 ..............121 HAC1 ............. 40, 180 EA ..............123 Hall IC ............47, 113 F3 ..............125 HE1 ............... 40, 180 F6 ..............126 HE2 ...............
Page 226 Si04-306E mode hierarchy ............60 mounting plate for the bearing ......169 S1 ............38, 160, 163 S10 ............40, 181, 182 S101 ............40, 181, 182 names of parts ............79 S102 .............. 40, 182 NIGHT SET mode ..........51 S20 ............40, 180, 182 S21 ..............
Page 227 Si04-306E indoor heat exchanger thermistor ........58, 59, 115, 159 outdoor air thermistor ........132 outdoor heat exchanger thermistor ........58, 59, 132, 188 radiation fin thermistor ........132 room temperature thermistor ......115 thermistor or related abnormality (indoor unit) ..115 thermistor or related abnormality (outdoor unit) ...131 thermistor resistance check .........144 thermostat control ..........50 TIMER operation ............95...
Page 228 Si04-306E Drawings & Flow Charts ARC433A series ..........106 heating peak-cut control ........65 automatic air flow control ........47 high pressure control in cooling ......126 automatic operation ..........49 HOME LEAVE operation ........54 auto-swing ..............46 indoor unit PCB abnormality ....... 110 buzzer PCB ............39 input current control ..........
Page 229 Si04-306E FTKD50BVM ..........200 power transistor ........... 198 FTKD60BVM ..........200 power transistor check ........148 FTKD60BVMA ..........200 programme dry function ........48 FTKD60BVMT ..........200 FTKD71BVM ..........200 FTKS50BVMA8 ..........200 radiation fin temperature rise ......135 FTKS71BAVMB ..........200 remote controller ..........106 FTKS71BVMA ..........200 FTKS71BVMB ..........200 FTXD50BV4 ..........200 service monitor PCB ..........
Page 230 Si04-306E RXD50BV4 ............210 RXD80CV4 ............210 RXS50/60/71B(2)VMB ........210 RXS50/60/71BVMA ........210 RXS71B3VMB ..........210 RYS50/60B(2)VMB ........210 Drawings & Flow Charts...
Page 231 Si04-306E viii Drawings & Flow Charts...
Page 232 Specifications, designs and other content appearing in this brochure are current as of May 2008 but subject to change without notice. Si 04-306E Printed in Japan 05/2008 B AK...

Daikin B-Series Service Manual

Part 1 List of Functions

Part 2 Specifications

Part 3 Printed Circuit Board Connector Wiring Diagram

Part 4 Function and Control

Part 5 Operation Manual

Part 6 Service Diagnosis

Part 7 Removal Procedure

Part 8 Others

Part 9 Appendix

Index

Quick Links

Troubleshooting

Need help?

Questions and answers

Related Manuals for Daikin B-Series

Summary of Contents for Daikin B-Series

Table of Contents