Page 1 SiBE12 - 522 D-Series [Applied Models] Inverter Multi : Cooling Only Inverter Multi : Heat Pump...
Page 2 SiBE12-522 SUPER MULTI NX D-Series Cooling Only Indoor Unit FTKS20D(2)VMW(L)(9) FTKS20CVMB(9) FDKS25CVMB FLKS25BVMB FTKS25D(2)VMW(L)(9) FTKS25CVMB(9)(8) FDKS35CVMB FLKS35BVMB FTKS35D(2)VMW(L)(9) FTKS35CVMB(9)(8) CDKS50CVMB FLKS50BVMB CTKS50D(2)VMW(L) FTKS50BVMB CDKS60CVMB FLKS60BVMB FTKS60BVMB FVKS25BVMB FTKS71BVMB FVKS35BVMB FVKS50BVMB Outdoor Unit 3MKS50DVMB 4MKS58DVMB 4MKS75DVMB 4MKS90DVMB Heat Pump Indoor Unit...
Page 3: Table Of Contents
SiBE12-522 1. Introduction ................... vii 1.1 Safety Cautions ..................vii Part 1 List of Functions ..............1 1. List of Functions ..................2 1.1 Cooling Only Models ................2 1.2 Heat Pump Models...................5 Part 2 Specifications ..............11 1. Specifications ..................12 1.1 Indoor Units - Cooling Only ..............12 1.2 Outdoor Units - Cooling Only ..............19 1.3 Indoor Units - Heat Pump...............21 1.4 Outdoor Units - Heat Pump ..............30...
Page 4 SiBE12-522 3.9 Liquid Compression Protection Function 2..........76 3.10 Defrost Control ..................77 3.11 Low Hz High Pressure Limit ..............78 3.12 Electronic Expansion Valve Control ............78 3.13 Malfunctions ...................82 3.14 Forced Operation Mode .................83 3.15 Wiring-Error Check.................84 3.16 Additional Function.................86 Part 5 System Configuration............89 1.
Page 5 SiBE12-522 5.14 Input Over Current Detection ...............190 5.15 Four Way Valve Abnormality..............192 5.16 Discharge Pipe Temperature Control...........194 5.17 High Pressure Control in Cooling ............195 5.18 Position Sensor Abnormality ..............197 5.19 CT or Related Abnormality ..............198 5.20 Thermistor or Related Abnormality (Outdoor Unit).......200 5.21 Electrical Box Temperature Rise............202 5.22 Radiation Fin Temperature Rise ............204 5.23 Output Over Current Detection.............206...
Page 6 SiBE12-522 2. Wiring Diagrams..................276 2.1 Indoor Units ..................276 2.2 Outdoor Units ..................280 Index ..................... i Drawings & Flow Charts ..............v Table of Contents...
Page 7 SiBE12-522 Table of Contents...
Page 8: Introduction
SiBE12-522 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 9 Introduction SiBE12-522 Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.
Page 10 SiBE12-522 Introduction Warning Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to the electrical equipment, the internal wiring regulations and the instruction manual for installation when conducting electrical work. Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire.
Page 11 Introduction SiBE12-522 Warning Do not use a joined power cable or extension cable, or share the same power outlet with other electrical appliances, since it can cause an electrical shock, excessive heat generation or fire. Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure.
Page 12: Part 1 List Of Functions
SiBE12-522 Part 1 List of Functions 1. List of Functions ..................2 1.1 Cooling Only Models ................2 1.2 Heat Pump Models...................5 List of Functions...
Page 13: List Of Functions
SiBE12-522 List of Functions 1. List of Functions Cooling Only Models Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — — Virustatic Functions Operation Limit for Cooling (°CDB) — — — Basic Operation Limit for Heating (°CWB) —...
Page 14 SiBE12-522 List of Functions Category Functions Category Functions Basic Health & Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — — — Function Clean Virustatic Functions Operation Limit for Cooling (°CDB) — — — Photocatalytic Deodorizing Filter —...
Page 15 SiBE12-522 List of Functions Category Functions Category Functions Basic Health & Air Purifying Filter with Bacteriostatic Inverter (with Inverter Power Control) — Function Clean & Virustatic Functions –10 Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — Air Purifying Filter with Operation Limit for Heating (°CWB) —...
Page 16: Heat Pump Models
SiBE12-522 List of Functions Heat Pump Models Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — — Virustatic Functions Operation Limit for Cooling (°CDB) — — — Basic Operation Limit for Heating (°CWB) —...
Page 17 SiBE12-522 List of Functions Category Functions Category Functions Basic Health & Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — — — Function Clean Virustatic Functions Operation Limit for Cooling (°CDB) — — — Photocatalytic Deodorizing Filter —...
Page 18 SiBE12-522 List of Functions Category Functions Category Functions Basic Health & Air Purifying Filter with Inverter (with Inverter Power Function Clean Bacteriostatic & Virustatic — Control) Functions –10 Operation Limit for Cooling — — Photocatalytic Deodorizing Filter — (°CDB) –15 Air Purifying Filter with Operation Limit for Heating —...
Page 19 SiBE12-522 List of Functions Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — Virustatic Functions Operation Limit for Cooling (°CDB) — — Basic Function Operation Limit for Heating (°CWB) — — Photocatalytic Deodorizing Filter —...
Page 20 SiBE12-522 List of Functions Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — Virustatic Functions Operation Limit for Cooling (°CDB) — Basic Function Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter — Air Purifying Filter with Photocatalytic PAM Control —...
Page 21 SiBE12-522 List of Functions Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — — –10~ Virustatic Functions Operation Limit for Cooling (°CDB) Basic –15~ Function Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter —...
Page 22: Part 2 Specifications
SiBE12-522 Part 2 Specifications 1. Specifications ..................12 1.1 Indoor Units - Cooling Only ..............12 1.2 Outdoor Units - Cooling Only ..............19 1.3 Indoor Units - Heat Pump...............21 1.4 Outdoor Units - Heat Pump ..............30 Specifications...
Page 23: Specifications
SiBE12-522 Specifications 1. Specifications Indoor Units - Cooling Only Wall Mounted Type 50Hz 230V Model FTKS20D(2)VMW(9) FTKS20D(2)VML Rated Capacity 2.0kW Class 2.0kW Class Front Panel Color White Silver Line 8.7 (307) 8.7 (307) 6.7 (237) 6.7 (237) m³/min Air Flow Rates (cfm) 4.7 (166) 4.7 (166)
Page 24 SiBE12-522 Specifications 50Hz 230V Model FTKS35D(2)VMW(9) FTKS35D(2)VML Rated Capacity 3.5kW Class 3.5kW Class Front Panel Color White Silver Line 8.9 (314) 8.9 (314) 6.9 (244) 6.9 (244) m³/min Air Flow Rates (cfm) 4.8 (169) 4.8 (169) 4.0 (141) 4.0 (141) Type Cross Flow Fan Cross Flow Fan...
Page 25 SiBE12-522 Specifications 50Hz 230V Model FTKS20CVMB(9) FTKS25CVMB(9)(8) Rated Capacity 2.0kW Class 2.5kW Class Front Panel Color White White 7.7 (272) 7.7 (272) 5.9 (208) 5.9 (208) m³/min Air Flow Rates (cfm) 4.2 (148) 4.2 (148) 3.6 (127) 3.6 (127) Type Cross Flow Fan Cross Flow Fan Motor Output...
Page 26 SiBE12-522 Specifications 50Hz 230V Model FTKS60BVMB FTKS71BVMB Rated Capacity 6.0kW Class 7.1kW Class Front Panel Color White White 16.2 (572) 16.7 (590) 13.6 (480) 14.2 (501) m³/min Air Flow Rates (cfm) 11.4 (402) 11.6 (409) 10.2 (360) 10.6 (374) Type Cross Flow Fan Cross Flow Fan Motor Output...
Page 27 SiBE12-522 Specifications Duct Connected Type 50Hz 230V Model FDKS25CVMB FDKS35CVMB Rated Capacity 2.5kW Class 3.5kW Class — — Front Panel Color 9.5 (335) 10.0 (353) 8.8 (311) 9.3 (328) m³/min Air Flow Rates (cfm) 8.0 (282) 8.5 (300) 6.7 (237) 7.0 (247) Type Sirocco Fan...
Page 28 SiBE12-522 Specifications Floor / Ceiling Suspended Dual Type 50Hz 230V Model FLKS25BVMB FLKS35BVMB Rated Capacity 2.5kW Class 3.5kW Class Front Panel Color Almond White Almond White 7.6 (268) 8.6 (304) 6.8 (240) 7.6 (268) m³/min Air Flow Rates (cfm) 6.0 (212) 6.6 (233) 5.2 (184) 5.6 (198)
Page 29 SiBE12-522 Specifications Floor Standing Type 50Hz 230V Model FVKS25BVMB FVKS35BVMB Rated Capacity 2.5kW Class 3.5kW Class Front Panel Color Almond White Almond White 8.1 (286) 8.3 (293) 6.2 (219) 6.3 (222) m³/min Air Flow Rates (cfm) 4.3 (152) 4.3 (152) 3.4 (120) 3.4 (120) Type...
Page 30: Outdoor Units - Cooling Only
SiBE12-522 Specifications Outdoor Units - Cooling Only 50Hz 230V Model 3MKS50DVMB 4MKS58DVMB — — Cooling Capacity — — Power Consumption — — Running Current Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Compressor Model 2YC32HXD 2YC32HXD...
Page 31 SiBE12-522 Specifications 50Hz 230V Model 4MKS75DVMB 4MKS90DVMB Cooling Capacity — — — — Power Consumption — — Running Current Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Compressor Model 2YC45BXD 2YC45BXD Motor Output 1,380 1,380 Model...
Page 32: Indoor Units - Heat Pump
SiBE12-522 Specifications Indoor Units - Heat Pump Wall Mounted Type 50Hz 230V FTXS20D(2)VMW(9) FTXS20D(2)VML Model Cooling Heating Cooling Heating Rated Capacity 2.0kW Class 2.0kW Class Front Panel Color White Silver Line 8.7 (307) 9.4 (332) 8.7 (307) 9.4 (332) 6.7 (237) 7.6 (268) 6.7 (237) 7.6 (268)
Page 33 SiBE12-522 Specifications 50Hz 230V FTXS35D(2)VMW(9) FTXS35D(2)VML Model Cooling Heating Cooling Heating Rated Capacity 3.5kW Class 3.5kW Class Front Panel Color White Silver Line 8.9 (314) 9.7 (342) 8.9 (314) 9.7 (342) 6.9 (244) 7.9 (279) 6.9 (244) 7.9 (279) m³/min Air Flow Rates (cfm) 4.8 (169)
Page 34 SiBE12-522 Specifications 50Hz 230V FTXS20CVMB(9) FTXS25CVMB(9)(8) Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 2.5kW Class Front Panel Color White White 7.7 (272) 7.8 (275) 7.7 (272) 7.8 (275) 5.9 (208) 6.5 (230) 5.9 (208) 6.5 (230) m³/min Air Flow Rates (cfm) 4.2 (148) 5.3 (187)
Page 35 SiBE12-522 Specifications 50Hz 230V FTXS60BVMB FTXS71BVMB Model Cooling Heating Cooling Heating Rated Capacity 6.0kW Class 7.1kW Class Front Panel Color White White 16.2 (572) 17.4 (614) 16.7 (590) 18.5 (653) 13.6 (480) 15.1 (533) 14.2 (501) 15.1 (533) m³/min Air Flow Rates (cfm) 11.4 (402) 12.7 (448)
Page 36 SiBE12-522 Specifications 230V 50Hz ATXS20DVMB ATXS25DVMB Model Cooling Heating Cooling Heating Rated Capacity 2.0kW Class 2.5kW Class Front Panel Color White White 7.7 (272) 7.8 (275) 7.7 (272) 7.8 (275) 5.9 (208) 6.5 (230) 5.9 (208) 6.5 (230) m³/min Air Flow Rates (cfm) 4.2 (148) 5.3 (187)
Page 37 SiBE12-522 Specifications 230V 50Hz ATXS20CVMB(9) ATXS25CVMB(9) Model Cooling Heating Cooling Heating Rated Capacity 2.0kW Class 2.5kW Class Front Panel Color White White 7.7 (272) 7.8 (275) 7.7 (272) 7.8 (275) 5.9 (208) 6.5 (230) 5.9 (208) 6.5 (230) m³/min Air Flow Rates (cfm) 4.2 (148) 5.3 (187)
Page 38 SiBE12-522 Specifications Duct Connected Type 50Hz 230V FDXS25CVMB FDXS35CVMB Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class — — Front Panel Color 9.5 (335) 9.5 (335) 10.0 (353) 10.0 (353) 8.8 (311) 8.8 (311) 9.3 (328) 9.3 (328) m³/min Air Flow Rates (cfm)
Page 39 SiBE12-522 Specifications Floor / Ceiling Suspended Dual Type 50Hz 230V FLXS25BVMB FLXS35BVMB Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class Front Panel Color Almond White Almond White 7.6 (268) 9.2 (325) 8.6 (304) 9.8 (346) 6.8 (240) 8.3 (293) 7.6 (268) 8.9 (314)
Page 40 SiBE12-522 Specifications Floor Standing Type 50Hz 230V FVXS25BVMB FVXS35BVMB Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class Front Panel Color Almond White Almond White 8.1 (286) 9.2 (325) 8.3 (293) 9.2 (325) 6.2 (219) 7.0 (247) 6.3 (222) 7.1 (251) m³/min Air Flow Rates...
Page 41: Outdoor Units - Heat Pump
SiBE12-522 Specifications Outdoor Units - Heat Pump 50Hz 230V 2MXS52DVMB 3MXS52DVMB Model Cooling Heating Cooling Heating — — Cooling Capacity — — Power Consumption — — Running Current Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Compressor Model 2YC32HXD...
Page 42 SiBE12-522 Specifications 50Hz 230V 2AMX52DVMB 3AMX52CVMB Model Cooling Heating Cooling Heating — — Cooling Capacity — — Power Consumption — — Running Current Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Compressor Model 2YC32HXD 2YC32HXD Motor Output...
Page 43 SiBE12-522 Specifications 50Hz 230V 4MXS68DVMB 4MXS80DVMB Model Cooling Heating Cooling Heating — — Cooling Capacity — — Power Consumption — — Running Current Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Compressor Model 2YC45BXD 2YC45BXD Motor Output...
Page 44: Part 3 Printed Circuit Board Connector Wiring Diagram
SiBE12-522 Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........34 1.1 Wall Mounted Type ................34 1.2 Duct Connected Type................41 1.3 Floor / Ceiling Suspended Dual Type.............43 1.4 Floor Standing Type ................45 1.5 Outdoor Units ..................48 Printed Circuit Board Connector Wiring Diagram...
Page 45: Printed Circuit Board Connector Wiring Diagram
SiBE12-522 Printed Circuit Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram Wall Mounted Type 1.1.1 FTK(X)S20~35D, CTK(X)S50D Connectors Connector for fan motor Connector for swing motor (horizontal blades) Connector for centralized control (HA) Connector for display PCB S27, S29, S36 Connector for control PCB Connector for signal receiver PCB Connector for heat exchanger thermistor...
Page 46 SiBE12-522 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB LED A (R4288) PCB(2): Signal Receiver PCB PCB(3): Display PCB LED1 LED2 LED3 RTH1 (R4289) (R4290) PCB(4): INTELLIGENT EYE sensor PCB (R4291) Printed Circuit Board Connector Wiring Diagram...
Page 47 SiBE12-522 Printed Circuit Board Connector Wiring Diagram 1.1.2 FTK(X)S20~35C, ATXS20~35D, ATXS20~35C Connectors Connector for fan motor Connector for swing motor (Horizontal Flap) Connector for fan motor Connector for centralized control to 5 rooms Connector for signal receiver PCB Connector for control PCB Connector for heat exchanger thermistor Connector for INTELLIGENT EYE Sensor PCB Note:...
Page 48 SiBE12-522 Printed Circuit Board Connector Wiring Diagram PCB(1) Control PCB (2) Signal reciever 5V Check 12V Check PCB (3) Intelligent eye sensor (R2413) Printed Circuit Board Connector Wiring Diagram...
Page 49 SiBE12-522 Printed Circuit Board Connector Wiring Diagram PCB Detail Printed Circuit Board Connector Wiring Diagram...
Page 50 SiBE12-522 Printed Circuit Board Connector Wiring Diagram 1.1.3 FTK(X)S50~71B, ATXS50D, ATXS50C 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 Connector for signal receiver PCB Connector for heat exchanger thermistor...
Page 51 SiBE12-522 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB (indoor unit) LED A (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 52: Duct Connected Type
SiBE12-522 Printed Circuit Board Connector Wiring Diagram Duct Connected Type Connectors (on PCB 1) Connector for fan motor 2) S1 (on PCB 2) Connector for control PCB Connector for fan motor Connector for centralized control to 5 rooms Connector for display PCB Connector for room temp / heat exchanger thermistor Note: Other designations...
Page 53 SiBE12-522 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (2): Display PCB Printed Circuit Board Connector Wiring Diagram...
Page 54: Floor / Ceiling Suspended Dual Type
SiBE12-522 Printed Circuit Board Connector Wiring Diagram Floor / Ceiling Suspended Dual Type Connectors Connector for swing motor (horizontal swing) Connector for fan motor Connector for centralized control Connector for display PCB 5) S25, S27, Connector for control PCB Connector for signal receiver PCB Connector for room temperature thermistor Connector for heat exchanger thermistor Connector for power supply PCB...
Page 55 SiBE12-522 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (2): Power Supply PCB PCB (3): Display PCB PCB (4): Signal Receiver PCB Printed Circuit Board Connector Wiring Diagram...
Page 56: Floor Standing Type
SiBE12-522 Printed Circuit Board Connector Wiring Diagram Floor Standing Type Connectors Connector for swing motor and lower air outlet motor Connector for centralized control Connector for signal receiver 4) S31, Connector for room temperature / heat exchanger thermistor 5) S201, S203, Connector for power supply PCB (1) S7, S24, 6) S202, S204,...
Page 57 SiBE12-522 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (1): Power Supply PCB Printed Circuit Board Connector Wiring Diagram...
Page 58 SiBE12-522 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (2): Control PCB PCB (3): Display PCB PCB (4): Signal Receiver PCB Printed Circuit Board Connector Wiring Diagram...
Page 59: Outdoor Units
SiBE12-522 Printed Circuit Board Connector Wiring Diagram Outdoor Units Connectors Connector for electronic expansion valve coil A port Connector for electronic expansion valve coil B port Connector for electronic expansion valve coil C port Connector for electronic expansion valve coil D port Connector for CN14 Connector for CN11 Connector for S34...
Page 60: Part 4 Function And Control
SiBE12-522 Part 4 Function and Control 1. Main Functions..................50 1.1 Frequency Principle................50 1.2 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing ..52 1.3 Fan Speed Control for Indoor Units............53 1.4 Programme Dry Function ...............54 1.5 Automatic Operation................55 1.6 Thermostat Control.................56 1.7 Night Set Mode..................57 1.8 ECONO Mode ..................58 1.9 INTELLIGENT EYE ................59...
Page 61: Main Functions
SiBE12-522 Main Functions 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 62 SiBE12-522 Main Functions Inverter Features The inverter provides the following features: The regulating capacity can be changed according to the changes in the outdoor air 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 63: Power-Airflow Dual Flaps, Wide Angle Louvers And Auto-Swing
SiBE12-522 Main Functions 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 64: Fan Speed Control For Indoor Units
SiBE12-522 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 178.
Page 65: Programme Dry Function
SiBE12-522 Main Functions Programme Dry Function Programme dry function removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and air flow 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 66: Automatic Operation
SiBE12-522 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 67: Thermostat Control
SiBE12-522 Main Functions 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 68: Night Set Mode
SiBE12-522 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 69: Econo Mode
SiBE12-522 Main Functions ECONO Mode Outline FTK(X)S20-35D, CTK(X)S50D The "ECONO mode" reduces the maximum operating current and power consumption by approx. 30% during start up etc.. This mode is particularly convenient for energy-saving-oriented users. It is also a major bonus for those whose breaker capacities do not allow the use of multiple electrical devices and air conditioners.
Page 70: Intelligent Eye
SiBE12-522 Main Functions 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 71 SiBE12-522 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 72: Home Leave Operation
SiBE12-522 Main Functions 1.10 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 73: Inverter Powerful Operation
SiBE12-522 Main Functions 1.11 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 twenty minutes.
Page 74: Other Functions
SiBE12-522 Main Functions 1.12 Other Functions 1.12.1 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 air flow is stopped or is made very weak thereby carrying out comfortable heating of the room.
Page 75 SiBE12-522 Main Functions 1.12.7 Air Purifying Filter with Photocatalytic Deodorizing Function This filter incorporates the benefits the Air Purifying Filter and Photocatalytic Deodorizing Filter in a single unit. Combining the two filters in this way increases the active surface area of the new filter.
Page 76: Function Of Main Structural Parts
SiBE12-522 Function of Main Structural Parts 2. Function of Main Structural Parts Main Structural Parts Heat Pump Model Expansion valve Solenoid valve Four way valve (R4595) Compressor Cooling Only Model Expansion valve Compressor (R4596) Note: Expansion Valve : In Case of 2MK(X)..EVA-B, 3MK(X)..EVA-C, 4MK(X)..EVA-D Function and Control...
Page 77: Function Of Thermistor
SiBE12-522 Function of Main Structural Parts Function of Thermistor 2.2.1 Heat Pump Model Expansion valve Solenoid valve Four way valve Compressor (R4600) A Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. The system sets a target discharge temperature according to the outdoor and indoor heat Exchanger exchanger temperature, and controls the electronic expansion valve opening so that the Thermistor...
Page 78 SiBE12-522 Function of Main Structural Parts D Indoor Heat 1. The indoor heat exchanger thermistors are used for controlling target discharge temperature. Exchanger The system sets a target discharge pipe temperature according to the outdoor and indoor Thermistor (DCN) heat exchanger temperature, and controls the electronic expansion valve opening so that the target discharge temperature can be obtained.
Page 79 SiBE12-522 Function of Main Structural Parts 2.2.2 Cooling Only Model Expansion valve Compressor (R4601) A Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. Exchanger The system sets a target discharge temperature according to the outdoor and indoor heat exchanger temperature, and controls the electronic expansion valve opening so that the Thermistor (DCB)
Page 80 SiBE12-522 Function of Main Structural Parts D Indoor Heat 1. The indoor heat exchanger thermistors are used for controlling target discharge temperature. Exchanger The system sets a target discharge pipe temperature according to the outdoor and indoor Thermistor (DCN) heat exchanger temperature, and controls the electronic expansion valve opening so that the target discharge temperature can be obtained.
Page 81: Control Specification
SiBE12-522 Control Specification 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...
Page 82: Frequency Control
SiBE12-522 Control Specification Frequency Control Outline Frequency that corresponds to each room’s capacity will be determined according to the difference in the temperature of each room and the temperature that is set by the remote controller. The function is explained as follows. 1.
Page 83 SiBE12-522 Control Specification 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-up protection, 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 84: Controls At Mode Changing / Start-Up
SiBE12-522 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 10.5°C and discharge pipe temperature is below 10.5°C, inverter in open phase operation starts.
Page 85: Discharge Pipe Control
SiBE12-522 Control Specification Discharge Pipe 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 Zones (typical value) Management within the Zone...
Page 86: Freeze-Up Protection Control
SiBE12-522 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 87: Fan Control
SiBE12-522 Control Specification Fan Control Outline Fan control is carried out with following functions. 1. Fan ON control for electric component cooling fan 2. Fan control when defrosting 3. Fan OFF delay when stopped 4. ON/OFF control when cooling operation 5.
Page 88: Defrost Control
SiBE12-522 Control Specification 3.10 Defrost Control Outline Heat Pump Only Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor heat exchanger temperature must be more than its fixed value when finishing. Detail Conditions for Starting Defrost The starting conditions must be made with the outdoor air temperature and heat exchanger temperature.
Page 89: Low Hz High Pressure Limit
SiBE12-522 Control Specification 3.11 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 90 SiBE12-522 Control Specification Detail The followings are the examples of control which function in each mode by the electronic expansion valve control. Operation pattern : function × : not function When power is turned ON × × × × × ×...
Page 91 SiBE12-522 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 92 SiBE12-522 Control Specification 3.12.7 Disconnection of the Discharge Pipe Thermistor Outline Detect a disconnected discharge pipe thermistor by comparing the discharge pipe temperature with the condensation temperature. If any is disconnected, open the electronic expansion valve according to the outdoor air temperature and the operating frequency and operate for a specified time, and then stop.
Page 93: Malfunctions
SiBE12-522 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. Gas pipe thermistor 5.
Page 94: Forced Operation Mode
SiBE12-522 Control Specification Detail Judgment by Input Current When an output frequency is exceeds 55 Hz and the input current is less than specified value, the adjustment is made for insufficient gas. Judgment by Discharge Pipe Temperature When discharge pipe temperature is 20°C higher than target value and the electronic expansion value opening is 450 plus (max.), the adjustment is made for insufficient gas.
Page 95: Wiring-Error Check
SiBE12-522 Control Specification 3.15 Wiring-Error Check Outline The convenient Wiring Error Check function is designed for the microcomputer to correct wiring errors itself. If local wiring is unclear in the case of buried piping, for example, just press the wiring error check switch that is behind the right-hand panel of the outdoor unit.
Page 96 SiBE12-522 Control Specification Checking the Those data can be checked by looking at the service monitor LED indicators, when the wiring error checking is over, during forced operation, at the stop of the system. current setting The LED indicators stop flashing when the forced operation is over. data on the LED1…Room A wiring, LED2…Room B wiring microcomputer...
Page 97: Additional Function
SiBE12-522 Control Specification 3.16 Additional Function 3.16.1 Connection Pipe Condensation Preventing Function This control is intended to adjust the electronic expansion valve opening so that the outdoor unit gas pipe temperature (GDN) be kept below 8°C. 3.16.2 Priority Room Setting Electronic expansion valves are controlled to provide the unit designated as the priority room with the capacity of other room units.
Page 98 SiBE12-522 Control Specification 3.16.5 Cooling / Heating Mode Lock Use the S15 connector to set the unit to only cool or heat. Setting to only heat (H): Short-circuit pins 1 and 3 of the connector <S15>. Setting to only cool (C): short-circuit pins 3 and 5 of the connector <S15>. The following specifications apply to the connector housing and pins.
Page 99 SiBE12-522 Control Specification Function and Control...
Page 100: Part 5 System Configuration
SiBE12-522 Part 5 System Configuration 1. System Configuration................90 1.1 Operation Instructions ................90 2. Instruction....................91 2.1 Manual Contents and Reference Page ..........91 2.2 Safety Precautions .................92 2.3 Names of Parts..................94 2.4 Preparation before Operation...............112 2.5 AUTO · DRY · COOL · HEAT · FAN Operation ........115 2.6 Adjusting the Air Flow Direction ............117 2.7 POWERFUL Operation ................127 2.8 OUTDOOR UNIT SILENT Operation ...........128...
Page 101: System Configuration
SiBE12-522 System Configuration 1. System Configuration Operation Instructions 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 102: Instruction
SiBE12-522 Instruction Instruction Manual Contents and Reference Page Wall Mounted Type Model Series FTK(X)S20~35D FTK(X)S20~35C FTK(X)S50~71B CTK(X)S50D ATXS20~35D, ATXS20~35C ATXS50D, ATXS50C Read before Operation Safety Precautions Names of Parts Preparation before Operation Operation AUTO, DRY, COOL, HEAT, FAN Operation Adjusting the Air Flow Direction POWERFUL Operation OUTDOOR UNIT SILENT Operation ECONO Operation...
Page 103: Safety Precautions
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 104: Installation Site
SiBE12-522 Instruction 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 105: Names Of Parts
SiBE12-522 Instruction Names of Parts FTK(X)S20/25/35D, CTK(X)S50D Names of parts Indoor Unit ON/OFF System Configuration...
Page 106 SiBE12-522 Instruction Outdoor Unit Indoor Unit 1. Air filter 12. Indoor Unit ON/OFF switch: • Push this switch once to start operation. 2. Titanium Apatite Photocatalytic Push once again to stop it. Air-Purifying Filter: • The operation mode refers to the following •...
Page 107 SiBE12-522 Instruction Remote Controller ECONO ON/OFF TEMP POWERFUL MODE SWING SILENT COMFORT SENSOR CANCEL TIMER < > ARC433A50, 43 1. Signal transmitter: 8. SILENT button: OUTDOOR UNIT SILENT • It sends signals to the indoor unit. operation 2. Display: 9. FAN setting button: •...
Page 108 SiBE12-522 Instruction FTK(X)S20/25/35C, ATXS20/25/35D, ATXS20/25/35C Names of parts ■ Indoor Unit System Configuration...
Page 109 SiBE12-522 Instruction ■ Outdoor Unit ■ Indoor Unit ■ ■ ■ 1. Air filter 12. Indoor Unit ON/OFF switch: • Push this switch once to start operation. 2. Air purifying fil er wi h pho oca aly ic Push once again to stop it. deodorizing func ion: •...
Page 110 SiBE12-522 Instruction ■ Remote Controller HOME LEAVE ON/OFF TEMP POWERFUL MODE SWING SILENT SENSOR CANCEL TIMER < > ARC433A1, A2 1. Signal transmitter: (AUTO/DRY/COOL/HEAT/FAN) • It sends signals to the indoor unit. 8. SILENT button: for OUTDOOR UNIT 2. Display: SILENT operation 9.
Page 111 SiBE12-522 Instruction FTK(X)S50/60/71B, ATXS50D, ATXS50C Names of parts ■ Indoor Unit The illustration shows a 50-class unit ■ Main unit control panel System Configuration...
Page 112 SiBE12-522 Instruction ■ 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: •...
Page 113 SiBE12-522 Instruction ■ Remote Controller HOME LEAVE ON/OFF TEMP POWERFUL MODE SILENT SENSOR SWING CANCEL TIMER < > ARC433A21, A22 1. Signal transmitter: 8. SILENT button: for OUTDOOR UNIT • It sends signals to the indoor unit. SILENT operation 2. Display: 9.
Page 114 SiBE12-522 Instruction FDK(X)S25/35C, CDK(X)S50/60C Names of parts Indoor Unit System Configuration...
Page 115 SiBE12-522 Instruction ■ Outdoor Unit ■ ■ ■ ■ Indoor Unit 1. Air outlet 10. Indoor Unit ON/OFF switch • Push this switch once to start operation. 2. Air outlet grille (Field supply) Push once again to stop it. • Appearance of the Air outlet grille and Air inlet •...
Page 116 SiBE12-522 Instruction ■ Remote Controller HOME LEAVE ON/OFF TEMP POWERFUL MODE SILENT CANCEL TIMER < > ARC433A7, A8 1. Signal transmitter: 7. MODE selector button: • It sends signals to the indoor unit. • It selects the operation mode. (AUTO/DRY/COOL/HEAT/FAN) 2.
Page 117 SiBE12-522 Instruction FLK(X)S25/35/50/60 Names of parts ■ Indoor Unit The indoor unit can be installed either to the ceiling or to a wall. 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.) ■...
Page 118 SiBE12-522 Instruction ■ Outdoor Unit ■ ■ ■ ■ Indoor Unit 1. Louvres (vertical blades): 13. Indoor unit ON/OFF switch The louvres are inside of the air outlet. • Push this switch once to start operation. Push once again to stop it. •...
Page 119 SiBE12-522 Instruction ■ Remote Controller HOME LEAVE ON/OFF TEMP POWERFUL MODE SWING SILENT CANCEL TIMER < > ARC433A5, A6 1. Signal Transmitter: 7. MODE selector button: • It sends signals to the indoor unit. • It selects the operation mode. (AUTO/DRY/COOL/HEAT/FAN) 2.
Page 120 SiBE12-522 Instruction FVK(X)S25/35/50 Names of parts ■ Indoor Unit ■ Opening the front grille How to open the grille Air outlet selection switch 12 13 • This setting blows air from upper outlet only. This setting automatically decides a blow •...
Page 121 SiBE12-522 Instruction ■ Outdoor Unit ■ ■ ■ ■ Indoor Unit 1. Photocatalytic deodorizing filter and • The operation mode refers to the following Air purifying filter: table. • These filters are attached to the inside of the air Temperature Air flow Mode filters.
Page 122 SiBE12-522 Instruction ■ Remote Controller HOME LEAVE ON/OFF TEMP POWERFUL MODE SWING SILENT CANCEL TIMER < > ARC433A5, A6 1. Signal transmitter: • It selects the operation mode. • It sends signals to the indoor unit. (AUTO/DRY/COOL/HEAT/FAN) 2. Display: 8. SILENT button: for OUTDOOR UNIT •...
Page 123: Preparation Before Operation
SiBE12-522 Instruction 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 ■...
Page 124 SiBE12-522 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 control- ler, such as a curtain, the unit will not operate. •...
Page 125 SiBE12-522 Instruction 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 rapidly HOME LEAVE ON/OFF increases or decreases the time display. TEMP POWERFUL 3.
Page 126: Auto · Dry · Cool · Heat · Fan Operation
SiBE12-522 Instruction AUTO · DRY · COOL · HEAT · FAN 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 127 SiBE12-522 Instruction ■ To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode Five levels of air flow rate setting from “ ” to “ ” plus “ ”...
Page 128: Adjusting The Air Flow Direction
SiBE12-522 Instruction Adjusting the Air Flow Direction FTK(X)S20/25/35D, CTK(X)S50D Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blades (flaps) 1. Press “SWING button”. “ ” is displayed on the LCD and the flaps •...
Page 129 SiBE12-522 Instruction To start COMFORT AIRFLOW operation 3. Press “COMFORT AIRFLOW button”. The flap position will change, preventing air from blowing directly on the occupants of the room. • “ ” is displayed on the LCD. 〈COOL/DRY〉 The flap will go up. 〈HEAT〉...
Page 130 SiBE12-522 Instruction FTK(X)S20/25/35C, ATXS20/25/35D, ATXS20/25/35C Adjusting the Air Flow Direction You can adjust the air flow direction to increase your com- fort. ■ To adjust the horizontal blades (flaps) 1. Press “SWING button”. The display will light up and the flaps will begin to swing.
Page 131 SiBE12-522 Instruction ■ To adjust the vertical blades (louvres) Hold the knob and move the louvres. (You will find a knob on the left-side and the right-side blades.) Notes on flaps and louvres angles • When “ SWING button ” is selected, the flaps In DRY mode or COOL mode swinging range depends on the operation mode.
Page 132 SiBE12-522 Instruction FTK(X)S50/60/71B, ATXS50D, ATXS50C Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. ■ To adjust the horizontal blade (flap) 1. Press “SWING button ”. • “ ” is displayed on the LCD. HOME LEAVE 2.
Page 133 SiBE12-522 Instruction ■ 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 134 SiBE12-522 Instruction FLK(X)S25/35/50/60 Adjusting the Air Flow Direction You can adjust the air flow direction to increase your com- fort. ■ To adjust the horizontal blade (flap) 1. Press “SWING button”. The display will light up and the flaps will begin to swing.
Page 135 SiBE12-522 Instruction ■ To adjust the vertical blades (louvres) • When adjusting the louvre, use a robust and stable stool and watch your steps carefully. Hold the knob and move the louvres. (You will find a knob on the left side and the right side blades.) Notes on flap and louvres angles •...
Page 136 SiBE12-522 Instruction FVK(X)S25/35/50 Adjusting the Air Flow Direction You can adjust the air flow direction to increase your com- fort. ■ To adjust the horizontal blade (flap) 1. Press “SWING button”. The display will light up and the flaps will begin to swing.
Page 137 SiBE12-522 Instruction ■ Air flow selection • Make air flow selection according to what suits you. When setting the air flow selection switch to • Air conditioner automatically decides the appropriate blowing pattern depending on the operating mode/situation. Operating mode Situation Blowing pattern •...
Page 138: Powerful Operation
SiBE12-522 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 ECONO ON/OFF...
Page 139: Outdoor Unit Silent Operation
SiBE12-522 Instruction OUTDOOR UNIT SILENT Operation OUTDOOR UNIT SILENT Operation OUTDOOR UNIT SILENT operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is conve- nient during night. ■...
Page 140: Econo Operation
SiBE12-522 Instruction ECONO Operation ECONO Operation ECONO operation is a function which enables efficient operation by lowering the maximum power con- sumption value. To start ECONO operation 1. Press “ECONO button” . • “ ” is displayed on the LCD. To cancel ECONO opera- tion 2.
Page 141: Home Leave Operation
SiBE12-522 Instruction 2.10 HOME LEAVE Operation HOME LEAVE Operation HOME LEAVE operation is a function which allows you to record your preferred temperature and air flow rate settings. ■ To start HOME LEAVE operation 1. Press “HOME LEAVE button” . •...
Page 142 SiBE12-522 Instruction What’s the HOME LEAVE operation Is there a set temperature and air flow rate which is most comfortable, a set temperature and air flow rate which you use the most? HOME LEAVE operation is a function that allows you to record your favor- ite set temperature and air flow rate.
Page 143: Intelligent Eye Operation
SiBE12-522 Instruction 2.11 INTELLIGENT EYE Operation FTK(X)S20/25/35D, CTK(X)S50D INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. ■ To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ” is displayed on the LCD. ■...
Page 144 SiBE12-522 Instruction INTELLIGENT EYE Operation “INTELLIGENT EYE” is useful for Energy Saving Energy saving operation • Change the temperature –2°C in heating / +2°C in cooling / +2°C in dry mode from set temperature. • Decrease the air flow rate slightly in fan operation. (In FAN mode only) Notes on “INTELLIGENT EYE”...
Page 145 SiBE12-522 Instruction FTK(X)S20/25/35C, ATXS20/25/35D, ATXS20/25/35C 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 INTELLIGENT EYE HOME LEAVE ON/OFF operation TEMP POWERFUL 2.
Page 146 SiBE12-522 Instruction ■ To adjust the angle of the INTELLIGENT EYE sensor • You can adjust the angle of the INTELLIGENT EYE sensor to increase the detection area. (Adjustable angle: 15° to right and left of centre) INTELLIGENT EYE 15˚ 15˚...
Page 147 SiBE12-522 Instruction FTK(X)S50/60/71B, ATXS50D, ATXS50C 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.
Page 148 SiBE12-522 Instruction “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 air flow rate slightly in fan operation. (In FAN mode only) Notes on “INTELLIGENT EYE”...
Page 149: Timer Operation
SiBE12-522 Instruction 2.12 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 opera- tion •...
Page 150 SiBE12-522 Instruction ■ To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. 1. Press “ON TIMER button”. is displayed. blinks. 2. Press “TIMER Setting button” until the time setting reaches the point you like.
Page 151: Note For Multi System
SiBE12-522 Instruction 2.13 Note for Multi System Note for Multi System 〈〈 〈〈 〈〈 〈〈 〉〉 〉〉 〉〉 〉〉 What is a “Multi System”? This system has one outdoor unit connected to multiple indoor units. room Outdoor unit ■ Selecting the Operation Mode room Living room...
Page 152 ■ Maximum Power Input Limitation • The Maximum Power Input Limitation needs to be set when the unit is installed. Contact DAIKIN dealer. • This function limits the power input of the unit to 1700W. It is recommended for locations with low-capacity circuit breakers.
Page 153: Care And Cleaning
SiBE12-522 Instruction 2.14 Care and Cleaning FTK(X)S20/25/35D, CTK(X)S50D 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 panel 1.
Page 154 SiBE12-522 Instruction Filters 1. Open the front panel. 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 Titanium Apatite Photocatalytic Air-Purifying Filter. •...
Page 155 SiBE12-522 Instruction NOTE • 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. • To order Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service shop there you bought the air conditioner.
Page 156 SiBE12-522 Instruction FTK(X)S20/25/35C, ATXS20/25/35D, ATXS20/25/35C 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 157 SiBE12-522 Instruction Filters 1. Open the front grille. 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 purifying filter with Air purifying filter photocatalytic deodorizing function.
Page 158 SiBE12-522 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 159 SiBE12-522 Instruction FTK(X)S50/60/71B, ATXS50D, ATXS50C 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 160 SiBE12-522 Instruction Filters 1. Open the front grille. 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 161 SiBE12-522 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 earth wire is not disconnected or broken. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation.
Page 162 SiBE12-522 Instruction FDK(X)S25/35C, CDK(X)S50/60C CARE Care and Cleaning • Only a qualified service person is allowed to CAUTION perform maintenance. • Before cleaning, be sure to stop the operation and turn the breaker OFF. ■ Cleaning the air filter. 1.Removing the air filter. •...
Page 163 • Clean the drain pan periodically, or drain piping may be clogged with dust and may result in water leakage. Ask your DAIKIN dealer to clean them. • Prepare a cover locally to prevent any dust in the air around the indoor unit from getting in the drain pan, if there is a great deal of dust present.
Page 164 SiBE12-522 Instruction FLK(X)S25/35/50/60 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. Open the front grille. •...
Page 165 SiBE12-522 Instruction Filters 1. Open the front grille. 2. Pull out the air filters. • Push upwards the tab at the center of each air fil- ter, then pull it down. 3. Take off the air purifying filter, photocatalytic deodorizing filter. •...
Page 166 SiBE12-522 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 earth wire is not disconnected or broken. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation.
Page 167 SiBE12-522 Instruction FVK(X)S25/35/50 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. Open the front grille. •...
Page 168 SiBE12-522 Instruction Filters 1. Open the front grille. 2. Remove the air filter. • Press the claws on the right and left of the air filter down slightly, then pull upward. 3. Take off the air purifying filter, Photocatalytic deodorizing filter. •...
Page 169 SiBE12-522 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 earth wire is not disconnected or broken. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation.
Page 170: Troubleshooting
SiBE12-522 Instruction 2.15 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 171 SiBE12-522 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 172 SiBE12-522 Instruction 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.
Page 173: Fault Diagnosis
SiBE12-522 Instruction Fault diagnosis FAULT DIAGNOSIS BY REMOTE CONTROLLER In the ARC433A series, the temperature display sections on the main unit indicate corresponding codes. 1. When the TIMER CANCEL button is held down for 5 seconds, a “ ” indication flashes on the temperature display section.
Page 174 SiBE12-522 Instruction LED ON OUTDOOR UNIT PCB 3MXS, 3MKS, 4MXS, 4MKS series GREEN MICROCOMPUTER MALFUNCTION NORMAL DETECTION DIAGNOSIS LED-A LED1 LED2 LED3 LED4 NORMAL CHECK INDOOR UNIT HIGH PRESSURE PROTECTOR WORKED OR FREEZE-UP IN OPERATING UNIT OR STAND-BY UNIT ∗ OVERLOAD RELAY WORKED OR HIGH DISCHARGE PIPE TEMPERATURE FAULTY COMPRESSOR START INPUT OVERCURRENT...
Page 175 SiBE12-522 Instruction System Configuration...
Page 176: Part 6 Service Diagnosis
SiBE12-522 Part 6 Service Diagnosis 1. Caution for Diagnosis................166 1.1 Troubleshooting with Operation Lamp ..........166 2. Problem Symptoms and Measures .............168 3. Service Check Function ..............169 4. Code Indication on the Remote Controller ..........172 4.1 Error Codes and Description of Fault ...........172 5.
Page 177: Caution For Diagnosis
SiBE12-522 Caution for Diagnosis 1. Caution for Diagnosis Troubleshooting with Operation Lamp 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.
Page 178 SiBE12-522 Caution for Diagnosis Caution: Operation stops suddenly. (Operation lamp blinks.) Cause of above trouble could be "Operation mode conflict". Check followings; Are the operation modes all the same for indoor units connected to Multi system outdoor unit? If not set all indoor units to the same operation mode and confirm that the operation lamp is not blinking.
Page 179: Problem Symptoms And Measures
SiBE12-522 Problem Symptoms and Measures Problem Symptoms and Measures Problem Symptom Check Item Details of Measure Page to be referred 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.
Page 180: Service Check Function
SiBE12-522 Service Check Function Service Check Function In the ARC433A series remote controller, the temperature display sections on the main unit indicate corresponding codes. Check Method 1 1. When the timer cancel button is held down for 5 seconds, a “00” indication flashes on the temperature display section.
Page 181 SiBE12-522 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 182 SiBE12-522 Service Check Function 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 183: Code Indication On The Remote Controller
SiBE12-522 Code Indication on the Remote Controller 4. Code Indication on the Remote Controller Error Codes and Description of Fault Code Indication Description of Problem System Normal Insufficient gas Low-voltage detection Signal transmission error (between indoor and outdoor units) Unspecified voltage (between indoor and outdoor units) Anti-icing function in other rooms Indoor Indoor unit PCB abnormality...
Page 184: Troubleshooting
SiBE12-522 Troubleshooting 5. Troubleshooting Indoor Units - : Not used for troubleshooting ∗ : Varies depending on the cases. Indication on the Description of the Fault Details of fault remote controller (Refer to the indicated page.) Indoor unit in normal condition (Conduct a diagnosis of the outdoor unit.) —...
Page 185: Outdoor Units
SiBE12-522 Troubleshooting Outdoor Units : ON, : OFF, : Blinks Green : Flashes when in normal condition Red : OFF in normal condition - : Not used for troubleshooting ∗ : Varies depending on the cases. Outdoor Unit LED Indication Indication on Description of The Fault the remote...
Page 186: Indoor Unit Pcb Abnormality
SiBE12-522 Troubleshooting 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 187: Freeze-Up Protection Control Or High Pressure Control
SiBE12-522 Troubleshooting Freeze-up Protection Control or 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 188 SiBE12-522 Troubleshooting 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.215 Is there any Provide sufficient air passage. short-circuit? Check the intake air filter. Is it very dirty? Clean the air filter.
Page 189: Fan Motor Or Related Abnormality
SiBE12-522 Troubleshooting Fan Motor or Related Abnormality 5.5.1 AC Motor 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 is less than 50% of the HH tap under maximum fan motor rotation demand.
Page 190 SiBE12-522 Troubleshooting 5.5.2 DC Motor 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 is less than 50% of the H tap under maximum fan motor rotation demand.
Page 191 SiBE12-522 Troubleshooting 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.212 and rotate fan by hand. Check No.02 Does fan rotate Replace fan motor.
Page 192: Thermistor Or Related Abnormality (Indoor Unit)
SiBE12-522 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 193: Shutter Drive Motor / Shutter Limit Switch Abnormality
SiBE12-522 Troubleshooting Shutter Drive Motor / Shutter Limit Switch Abnormality Remote Controller Display Method of The shutter open / close performance is detected by the limit switch attached on its structure. In this way, the shutter drive motor and the shutter limit switch are checked for failure. Malfunction Detection Malfunction...
Page 194: Signal Transmission Error (Between Indoor And Outdoor Units)
SiBE12-522 Troubleshooting 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 195: Unspecified Voltage (Between Indoor And Outdoor Units)
SiBE12-522 Troubleshooting Unspecified Voltage (between Indoor and Outdoor Units) Remote Controller Display Method of The supply power is detected for its requirements (different from pair type and multi type) by the indoor / outdoor transmission signal. Malfunction Detection Malfunction The pair type and multi type are interconnected. Decision Conditions Supposed...
Page 196: Freeze-Up Protection Control
SiBE12-522 Troubleshooting 5.10 Freeze-up Protection Control Remote Controller Display Outdoor Unit LED Display Method of Indoor unit icing, during cooling operation, is detected by checking the temperatures sensed by the indoor unit heat exchanger thermistor and room temperature thermistor that are located in a Malfunction shut-down room.
Page 197 SiBE12-522 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.04 Check the wiring and piping. Refer to P.213 Check No.06 Wiring or piping out of spec? Activate the wiring error Refer to P.215 check mode.
Page 198: Ol Activation (Compressor Overload)
SiBE12-522 Troubleshooting 5.11 OL Activation (Compressor Overload) Remote Controller Display Outdoor Unit LED 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 199: Compressor Lock
SiBE12-522 Troubleshooting 5.12 Compressor Lock Remote Controller Display Outdoor Unit LED Display Method of A compressor lock is detected by checking the compressor running condition through the position detection circuit. Malfunction 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 200: Dc Fan Lock
SiBE12-522 Troubleshooting 5.13 DC Fan Lock Remote Controller Display Outdoor Unit LED Display Method of A fan motor line error is detected by checking the high-voltage fan motor rpm being detected by the Hall IC. Malfunction 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 201: Input Over Current Detection
SiBE12-522 Troubleshooting 5.14 Input Over Current Detection Remote Controller Display Outdoor Unit LED Display Method of Malfunction is detected by checking the input current value. Malfunction Detection Malfunction The following condition continues for 2.5 seconds. Input current ≥ 11A (typical value) Decision The compressor halts if the error occurs, and restarts automatically after 3 minutes stand-by.
Page 202 SiBE12-522 Troubleshooting 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 Refer to P.216 reconnected for part replacement, for example, and the system is interrupted by an input over-current, take the following procedure.
Page 203: Four Way Valve Abnormality
SiBE12-522 Troubleshooting 5.15 Four Way Valve Abnormality Remote Controller Display Outdoor Unit LED Display Method of The liquid pipe thermistor, the outdoor temperature thermistor and the outdoor unit heat exchanger thermistor are checked to see if they function within their normal ranges in the Malfunction operating mode.
Page 204 SiBE12-522 Troubleshooting 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.214 Four-way valve coil Correct. disconnected (loose)? Check No.06 Refer to P.215 Harness out of connector? Reconnect.
Page 205: Discharge Pipe Temperature Control
SiBE12-522 Troubleshooting 5.16 Discharge Pipe Temperature Control Remote Controller Display Outdoor Unit LED Display Method of The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the temperature being detected by the discharge pipe thermistor. Malfunction Detection Malfunction 2YC45 If the temperature being detected by the discharge pipe thermistor rises above 120°C, the Decision...
Page 206: High Pressure Control In Cooling
SiBE12-522 Troubleshooting 5.17 High Pressure Control in Cooling Remote Controller Display Outdoor Unit LED Display Method of High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the temperature being sensed by the heat exchanger thermistor exceeds the limit. Malfunction Detection Malfunction...
Page 207 SiBE12-522 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.213 Check the installation space. Check No.06 Check No.07 Abnormal Installation condition Change the air outlet grille Refer to P.215 check position.
Page 208: Position Sensor Abnormality
SiBE12-522 Troubleshooting 5.18 Position Sensor Abnormality Remote Controller Display Outdoor Unit LED Display Method of A compressor startup failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Detection Malfunction The compressor fails to start in about 15 seconds after the compressor run command signal is sent.
Page 209: Ct Or Related Abnormality
SiBE12-522 Troubleshooting 5.19 CT or Related Abnormality Remote Controller Display Outdoor Unit LED Display Method of A CT or related error is detected by checking the compressor running frequency and CT- detected input current. Malfunction 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 210 SiBE12-522 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.12 Turn off the power and turn it on Refer to P.219 again. Get the system started. ∗...
Page 211: Thermistor Or Related Abnormality (Outdoor Unit)
SiBE12-522 Troubleshooting 5.20 Thermistor or Related Abnormality (Outdoor Unit) P4, J3, J6, J8, J9, H9 Remote Controller Display Outdoor Unit LED Display Method of This type of error is detected by checking the thermistor input voltage to the microcomputer. [A thermistor error is detected by checking the temperature being detected by each thermistor.] Malfunction Detection Malfunction...
Page 212 SiBE12-522 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Turn on the power again. Refer to P.215 Error displayed again Reconnect. on remote controller? Connector or thermistor Reconnect.
Page 213: Electrical Box Temperature Rise
SiBE12-522 Troubleshooting 5.21 Electrical Box Temperature Rise Remote Controller Display Outdoor Unit LED Display Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the compressor off. Malfunction Detection Malfunction With the compressor off, the radiation fin temperature is above 80°C (above 75°C for 80 · 90 class).
Page 214 SiBE12-522 Troubleshooting 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.215 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...
Page 215: Radiation Fin Temperature Rise
SiBE12-522 Troubleshooting 5.22 Radiation Fin Temperature Rise Remote Controller Display Outdoor Unit LED Display Method of A radiation fin temperature rise is detected by checking the radiation fin temperature being detected by the fin thermistor with the compressor on. Malfunction Detection Malfunction The radiation fin temperature with the compressor on is above 90°C (above 85°C for 80 ·...
Page 216 SiBE12-522 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Turn off the power and turn it on Refer to P.215 again to get the system started. Check No.07 Refer to P.216 Error displayed again?
Page 217: Output Over Current Detection
SiBE12-522 Troubleshooting 5.23 Output Over Current Detection Remote Controller Display Outdoor Unit LED 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 218 SiBE12-522 Troubleshooting 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.216 reconnected for part replacement, for example, and the system is interrupted by an output over-current, take the following procedure.
Page 219: Insufficient Gas
SiBE12-522 Troubleshooting 5.24 Insufficient Gas Remote Controller Display Outdoor Unit LED Display Method of Gas shortage detection I: Gas shortage is detected by checking the input current value and the compressor running Malfunction frequency. If the gas is short, the input current is smaller than the normal value. Detection Gas shortage detection II: Gas shortage is detected by checking the discharge temperature and the opening of the...
Page 220 SiBE12-522 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.213 Any thermistor Reconnect in position. disconnected? * Discharge pipe thermistor * Indoor / outdoor unit heat exchanger thermistor Check No.06 * Room temperature thermistor Refer to P.215...
Page 221: Low-Voltage Detection
SiBE12-522 Troubleshooting 5.25 Low-voltage Detection Remote Controller Display Outdoor Unit LED Display Method of An abnormal voltage rise or drop is detected by checking the detection circuit or DC voltage detection circuit. Malfunction 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 222: Anti-Icing Function In Other Rooms / Unspecified Voltage (Between Indoor And Outdoor Units)
SiBE12-522 Troubleshooting 5.26 Anti-icing Function in Other Rooms / Unspecified Voltage (between Indoor and Outdoor Units) UA, UH Remote Controller Display Outdoor Unit LED Display Method of A wrong connection is detected by checking the combination of indoor and outdoor units on the microcomputer.
Page 223: Check
SiBE12-522 Check 6. Check How to Check 6.1.1 Fan Motor Connector Output Check Check No.01 1. Check connector connection. 2. Check motor power supply voltage output (pins 4-7 and 4-8). 3. Check motor control voltage (pins 4-3). 4. Check rotation command voltage output (pins 4-2). 5.
Page 224: Electronic Expansion Valve Check
SiBE12-522 Check 6.1.3 Electronic Expansion Valve Check Check No.04 Conduct the followings to check the electronic expansion valve (EV). 1. Check to see if the EV connector is correctly inserted in the PCB. Compare the EV unit and the connector number. 2.
Page 225 SiBE12-522 Check 6.1.4 Four Way Valve Performance Check Check No.05 Turn off the power and turn it on again. ∗ Four way valve coil Cooling / dry : No continuity Start the heating-mode run. Heating : Continuity S80 voltage at DC 180-220 V with Replace the outdoor unit compressor on? PCB.
Page 226 SiBE12-522 Check 6.1.5 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 227: Installation Condition Check
SiBE12-522 Check 6.1.6 Installation Condition Check Check No.07 Installation condition check Check the allowable Abnormal Change the position of the air dimensions of the air suction discharge grille or the and discharge area. installation location. Normal Does the discharged air from other outdoor Change the position of the air unit cause an increase of discharge grille or the...
Page 228: Discharge Pressure Check
SiBE12-522 Check 6.1.7 Discharge Pressure Check Check No.08 Discharge pressure check High Replace compessor. Open the stop valve. Is the stop valve open? Is the Replace the pipe installed at connection pipe deformed? the site. At the heat exchanger and Clean.
Page 229 SiBE12-522 Check 6.1.9 Power Supply Waveforms Check Check No.10 Measure the power supply waveform between pins 1 and 3 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 230: Power Transistor Check
SiBE12-522 Check 6.1.11 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 231: Main Circuit Electrolytic Capacitor Check
SiBE12-522 Check 6.1.13 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 232 SiBE12-522 Check 6.1.15 Hall IC Check Check No.16 1. Check the connector connection. 2. With the power ON, operation OFF, and the connector connected, 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) faulty PCB Replace the PCB.
Page 233 SiBE12-522 Check Service Diagnosis...
Page 234: Part 7 Removal Procedure
SiBE12-522 Part 7 Removal Procedure 1. Outdoor Unit (80 / 90 Class) ...............224 1.1 Removal of Outer Panels ..............224 1.2 Removal of Propeller Fans..............227 1.3 Removal of Electrical Box ..............228 1.4 Removal of PCB...................235 1.5 Removal of Fan Motor................238 1.6 Removal of Electronic Expansion Valve and Thermistor .....240 1.7 Removal of Sound Blanket and Reactor ..........241 1.8 Removal of Shunt.................243 1.9 Removal of Solenoid Valve and Four Way Valve.........244...
Page 235: Outdoor Unit (80 / 90 Class)
Outdoor Unit (80 / 90 Class) SiBE12-522 1. Outdoor Unit (80 / 90 Class) Removal of Outer Panels Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points External appearance.
Page 236 SiBE12-522 Outdoor Unit (80 / 90 Class) Step Procedure Points Unscrew 3 screws of the right panel, slide it downwards and release the tabs to remove. The figure shows the view of piping connections. Unscrew 1 screw of the front right panel, slide it downwards and release the tabs to remove.
Page 237 Outdoor Unit (80 / 90 Class) SiBE12-522 Step Procedure Points Unscrew 3 screws of the front panel to remove. Remove 4 screws of the discharge outlet grill. Slide the discharge outlet grill upwards and release 6 tabs to remove. Removal Procedure...
Page 238: Removal Of Propeller Fans
SiBE12-522 Outdoor Unit (80 / 90 Class) Removal of Propeller Fans Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the discharge outlet grill To take off propeller fan, remove the washer-fitted nut M8.
Page 239: Removal Of Electrical Box
Outdoor Unit (80 / 90 Class) SiBE12-522 Removal of 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 outer panels Match the colors of the tie such as top and front wires to A, B, C and D ports panels.
Page 240 SiBE12-522 Outdoor Unit (80 / 90 Class) Step Procedure Points Remove the earth wire. Remove 1 screw of the terminal board. Release the tab on the top right of the terminal board. Pull out the terminal Glass tube fuse and varistor board and open it.
Page 241 Outdoor Unit (80 / 90 Class) SiBE12-522 Step Procedure Points 2. Remove each wire harness Disconnect 4 connectors of the electronic expansion Connector Electronic Harness expansion length valve lead wires. valve No. (White) (Red) (Blue) (Yellow) When reconnecting, make sure to match the wire to the correct connector.
Page 242 SiBE12-522 Outdoor Unit (80 / 90 Class) Step Procedure Points Remove the connector for gas pipe thermistor. Remove the connector for thermistor. Outdoor air thermistor (Blue) Discharge pipe thermistor (Black) Heat exchanger thermistor (Gray) Remove the overload relay connector S40. Remove the reactor lead wire.
Page 243 Outdoor Unit (80 / 90 Class) SiBE12-522 Step Procedure Points Remove the relay connector for compressor. Remove the electrical box cover. Disconnect the fan motor connector. Remove the discharge pipe thermistor. Removal Procedure...
Page 244 SiBE12-522 Outdoor Unit (80 / 90 Class) Step Procedure Points Take off the thermistor Place the thermistor so that presser spring, and its end comes up to the end remove the thermistor. of the presser spring. Be careful not to lose the presser spring for the discharge pipe thermistor.
Page 245 Outdoor Unit (80 / 90 Class) SiBE12-522 Step Procedure Points Remove the outdoor air thermistor lead wire from the groove. Remove each wire harness, and dismount the electrical box by lifting it. Removal Procedure...
Page 246: Removal Of Pcb
SiBE12-522 Outdoor Unit (80 / 90 Class) Removal of Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the controller Release the tab of the electrical box, and open the terminal board.
Page 247 Outdoor Unit (80 / 90 Class) SiBE12-522 Step Procedure Points Lift the PCB at the terminal board side. Disconnect each wire harness connector linked to the inverter PCB. Removal Procedure...
Page 248 SiBE12-522 Outdoor Unit (80 / 90 Class) Step Procedure Points The figure shows the S20: Electronic expansion valve controller PCB. coil A port S21: Electronic expansion valve coil B port S22: Electronic expansion valve coil C port S23: Electronic expansion valve coil D port S31: To CN14 (Pin 9) S32: To CN11 (Pin 5)
Page 249: Removal Of Fan Motor
Outdoor Unit (80 / 90 Class) SiBE12-522 Removal of Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the outer panels. Remove the fan motor lead wire connector S70.
Page 250 SiBE12-522 Outdoor Unit (80 / 90 Class) Step Procedure Points Remove 4 screws of the fan motor. Cut the wrapper fixing the lead wire. When reassembling, fix the lead wire to avoid contact with the propeller fan. Remove the fan motor. Removal Procedure...
Page 251: Removal Of Electronic Expansion Valve And Thermistor
Outdoor Unit (80 / 90 Class) SiBE12-522 Removal of Electronic Expansion Valve Thermistor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove each wire Place the thermistor so that harness.
Page 252: Removal Of Sound Blanket And Reactor
SiBE12-522 Outdoor Unit (80 / 90 Class) Removal of Sound Blanket Reactor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Release the clip fixing the compressor lead wire.
Page 253 Outdoor Unit (80 / 90 Class) SiBE12-522 Step Procedure Points Remove the sound Carefully remove the sound blanket (top). blanket, which is easily torn in the piping section. Remove the sound blanket (inner). Remove 1 screw of the reactor. Removal Procedure...
Page 254: Removal Of Shunt
SiBE12-522 Outdoor Unit (80 / 90 Class) Removal of Shunt Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove 6 screws of Fasten the rubber packing the tie wire presser with double-faced adhesive plate.
Page 255: Removal Of Solenoid Valve And Four Way Valve
Outdoor Unit (80 / 90 Class) SiBE12-522 Removal of Solenoid Valve 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 Remove the outer panels. 1.
Page 256 SiBE12-522 Outdoor Unit (80 / 90 Class) Step Procedure Points Before taking this Reassembling precautions procedure, make sure 1. Use non-oxidizing brazing there is no refrigerant gas method. If nitrogen gas is not left in the refrigerant available, braze the parts pipes.
Page 257: Removal Of Compressor
Outdoor Unit (80 / 90 Class) SiBE12-522 1.10 Removal of 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. Remove the overload relay.
Page 258 SiBE12-522 Outdoor Unit (80 / 90 Class) Step Procedure Points Make sure there is no refrigerant gas left inside Warning the refrigerant pipes The compressor's refrigerating before starting the job. machine oil may catch fire. Have When heating up the wet cloth at hand for quickly putting brazed parts, make sure out the fire.
Page 259: Outdoor Unit (50 / 52 / 58 / 68 / 75 Class)
Outdoor Unit (50 / 52 / 58 / 68 / 75 Class) SiBE12-522 2. Outdoor Unit (50 / 52 / 58 / 68 / 75 Class) Removal of Outer Panels Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work.
Page 260: Removal Of Electrical Box
SiBE12-522 Outdoor Unit (50 / 52 / 58 / 68 / 75 Class) Removal of Electrical BOX Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the tie wires The figure shows the tie pipe connections.
Page 261 Outdoor Unit (50 / 52 / 58 / 68 / 75 Class) SiBE12-522 Step Procedure Points Pull out the terminal Glass tube fuse and varistor board to open. cannot be replaced individually because lead- free soldering is provided. 2. Remove each wire harness Disconnect 4 Connector...
Page 262 SiBE12-522 Outdoor Unit (50 / 52 / 58 / 68 / 75 Class) Step Procedure Points Disconnect the compressor relay connector. Remove the reactor lead wire. 3. Removing the wiring fixture Remove 6 screws of the wiring fixture. 4. Removing the electrical box.
Page 263 Outdoor Unit (50 / 52 / 58 / 68 / 75 Class) SiBE12-522 Step Procedure Points Remove 1 screw of the electrical box. Remove the drip-proof cover. Disconnect the fan motor lead wire. Lift up the electrical box and dismount it. Removal Procedure...
Page 264: Removal Of Pcb
SiBE12-522 Outdoor Unit (50 / 52 / 58 / 68 / 75 Class) Removal of Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the controller Remove 1 screw of the PCB, and release two tabs.
Page 265 Outdoor Unit (50 / 52 / 58 / 68 / 75 Class) SiBE12-522 Step Procedure Points Lift up the control PCB. Disconnect each wire harness connector linked to the control PCB. (Pin 9): To CN14 (Pin 5): To CN11 (Pin 10): To S34 (Pin 8): To S72 Removal Procedure...
Page 266 SiBE12-522 Outdoor Unit (50 / 52 / 58 / 68 / 75 Class) Step Procedure Points The figure shows the Glass tube fuse 3A control PCB. 2. Removing the service monitor PCB The figure shows the service monitor PCB. 3. Removing the inverter PCB.
Page 267: Removal Of Fan Motor
Outdoor Unit (50 / 52 / 58 / 68 / 75 Class) SiBE12-522 Removal of Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the fan motor For reassembling, align lead wire connector.
Page 268: Removal Of Sound Blanket
SiBE12-522 Outdoor Unit (50 / 52 / 58 / 68 / 75 Class) Removal of Sound Blanket Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove 5 screws of the right side panel.
Page 269: Removal Of Four Way Valve Coil, Solenoid Valve Coil
Outdoor Unit (50 / 52 / 58 / 68 / 75 Class) SiBE12-522 Removal of Four Way Valve Coil, Solenoid Valve Coil, Electronic Expansion Valve Coil Thermistor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work.
Page 270 SiBE12-522 Outdoor Unit (50 / 52 / 58 / 68 / 75 Class) Step Procedure Points Take off the putty, and Place the thermistor so that remove each its end comes up to the end thermistor. of the presser spring. Be careful not to lose the presser spring for the discharge pipe...
Page 271: Removal Of Four Way Valve, Solenoid Valve And Shunt
Outdoor Unit (50 / 52 / 58 / 68 / 75 Class) SiBE12-522 Removal of Four Way Valve, Solenoid Valve Shunt Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points...
Page 272: Removal Of Solenoid Valve And Shunt
SiBE12-522 Outdoor Unit (50 / 52 / 58 / 68 / 75 Class) Removal of Solenoid Valve Shunt Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Before taking this procedure, make sure there is no refrigerant gas...
Page 273: Removal Of Compressor
Outdoor Unit (50 / 52 / 58 / 68 / 75 Class) SiBE12-522 Removal of 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.
Page 274: Part 8 Others
SiBE12-522 Part 8 Others 1. Others ....................264 1.1 Test Run from the Remote Controller ..........264 1.2 Jumper Settings ...................265 Others...
Page 275: Others
SiBE12-522 Others 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 276: Jumper Settings
SiBE12-522 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 electrical box.
Page 277 SiBE12-522 Others 1.2.3 Adjusting the Angle of the Intelligent Eye Sensor FTK(X)S20-35C, ATXS20-35D, ATXS20-35C Once installation of the indoor unit is complete, adjust the angle of the Intelligent eye sensor to ensure the detection area properly covers the room. (Adjustable angle : 15° to right and left of center) Gently push and slide the sensor to adjust the angle.
Page 278: Part 9 Appendix
SiBE12-522 Part 9 Appendix 1. Piping Diagrams..................268 1.1 Indoor Units ..................268 1.2 Outdoor Units ..................272 2. Wiring Diagrams..................276 2.1 Indoor Units ..................276 2.2 Outdoor Units ..................280 Appendix...
Page 279: Piping Diagrams
SiBE12-522 Piping Diagrams 1. Piping Diagrams Indoor Units 1.1.1 Wall Mounted Type FTK(X)S20/25/35D(2)VMW(L)(9) CTK(X)S50D(2)VMW(L) INDOOR UNIT INDOOR UNIT MAFFLER ASSY MAFFLER ASSY HEAT EXCHANGER HEAT EXCHANGER 7.0CuT 7.0CuT 6.4CuT 6.4CuT THERMISTOR THERMISTOR 6.4CuT 6.4CuT ON HEAT EXCH. ON HEAT EXCH. 6.4CuT 6.4CuT CROSS FLOW FAN...
Page 280 SiBE12-522 Piping Diagrams FTK(X)S50/60BVMB FTK(X)S71BVMB ATXS50DVMB, ATXS50CVMB INDOOR UNIT INDOOR UNIT ( 7.9CuT ) (7.9CuT) HEAT EXCHANGER HEAT EXCHANGER THERMISTOR THERMISTOR ON HEAT ON HEAT EXCH. EXCH. CROSS FLOW FAN CROSS FLOW FAN FIELD PIPING FIELD PIPING (6.4CuT) ( 6.4CuT ) FAN MOTOR FAN MOTOR FIELD PIPING...
Page 281 SiBE12-522 Piping Diagrams 1.1.3 Floor / Ceiling Suspended Dual Type FLKS25/35BVMB FLKS50/60BVMB INDOOR UNIT INDOOR UNIT ( 6. 4CuT ) ( 9. 5CuT ) HEAT EXCHANGER HEAT EXCHANGER THERMISTOR THERMISTOR ON HEAT FIELD PIPING FIELD PIPING ON HEAT ( 6. 4CuT ) EXCH.
Page 282 SiBE12-522 Piping Diagrams 1.1.4 Floor Standing Type FVK(X)S25/35BVMB INDOOR UNIT HEAT EXCHANGER THERMISTOR CROSS FLOW FAN FAN MOTOR ON HEAT EXCH. 7.0CuT 7.0CuT CROSS FLOW FAN FAN MOTOR FIELD PIPING ( 6.4CuT ) SINGLE UNION JOINT 9.5CuT FIELD PIPING ( 9.5CuT ) SINGLE UNION JOINT REFRIGERANT FLOW COOLING...
Page 283: Outdoor Units
SiBE12-522 Piping Diagrams Outdoor Units 1.2.1 Cooling Only 3MKS50DVMB OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE THERMISTOR ( DOA ) MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR ( DLA ) HEADER 6.4CuT 9.5CuT ROOM A ( 6.4CuT ) FILTER MOTOR OPERATED VALVE THERMISTOR ( DLB ) 6.4CuT FIELD...
Page 284 SiBE12-522 Piping Diagrams 4MKS75DVMB OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPARATURE THERMISTOR ( DOA ) MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR ( DLA ) 6.4CuT HEADER 9.5CuT ROOM A ( 6.4 CuT ) FILTER MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR ( DLB ) 6.4CuT ROOM B ( 6.4 CuT )
Page 285 SiBE12-522 Piping Diagrams 1.2.2 Heat Pump 2MXS52DVMB, 2AMX52DVMB OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPARATURE THERMISTOR ( DOA ) HEADER HEADER MOTOR OPERATED VALVE LIQUID PIPE 9.5CuT THERMISTOR(DLA) 6.4CuT ROOM A MOTOR OPERATED VALVE (6.4 CuT) FILTER FIELD LIQUID PIPE THERMISTOR(DLB) PIPING 6.4CuT LIQUID...
Page 286 SiBE12-522 Piping Diagrams 4MXS68DVMB OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE THERMISTOR ( DOA ) MOTOR OPERATED VALVE LIQUID PIPE HEADER THERMISTOR ( DLA ) HEADER 6.4CuT 9.5CuT ROOM A ( 6.4 CuT ) FILTER MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR ( DLB ) 6.4CuT ROOM B ( 6.4 CuT )
Page 287: Wiring Diagrams
SiBE12-522 Wiring Diagrams 2. Wiring Diagrams Indoor Units 2.1.1 Wall Mounted Type FTK(X)S20/25/35D(2)VMW(L)(9), CTK(X)S50D(2)VMW(L) FIELD WIRING. PCB3 PCB1 LED1 RECTIFIER 3.15A LED2 OUTDOOR CAUTION LED3 TRANSMISSION NOTE THAT OPERATION WILL CIRCUIT RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN.
Page 288 SiBE12-522 Wiring Diagrams FTK(X)S50BVMB, ATXS50DVMB, ATXS50CVMB 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. LED1 LED2 LED3 : FRAME GROUND : FUSE : HARNESS...
Page 289 SiBE12-522 Wiring Diagrams 2.1.2 Duct Connected Type FDK(X)S25/35CVMB, CDK(X)S50/60CVMB PCB1 PCB2 V1TR 3.15A outdoor FIELD WIRING. TERMINAL FOR CAUTION CENTRALIZED CONTROL TRANSMISSION NOTE THAT OPERATION WILL CIRCUIT RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK SIGNAL ON AGAIN.
Page 290 SiBE12-522 Wiring Diagrams 2.1.4 Floor Standing Type FVK(X)S25/35/50BVMB PCB3 3.15A → S2W ( 4 ) outdoor TRANSMISSION PCB2 FIELD WIRING. WIRELESS CIRCUIT REMOTE PCB1 CONTROLLER PCB4 : PROTECTIVE EARTH : FUSE S201 S202 H1P , H2P , H3P : PILOT LAMP : LIMIT SWITCH M1F , M2F SIGNAL...
Page 291: Outdoor Units
SiBE12-522 Wiring Diagrams Outdoor Units 2.2.1 Cooling only 3MKS50DVMB POWER SUPPLY FU201 ~50Hz 220-240V MID2 ~60Hz 220-230V 3.15A FIELD WIRING MRM20 MRM10 TO INDOOR UNIT CN11 ROOM A R12T MID1 CN14 3.15A t° ROOM B ROOM C S101 t° t° t°...
Page 292 SiBE12-522 Wiring Diagrams 2.2.2 Heat Pump 2MXS52DVMB, 2AMX52DVMB POWER SUPPLY FU201 MID2 ~50Hz 220-240V ~60Hz 220-230V 3.15A FIELD WIRING MRM20 MRM10 X11A TO INDOOR UNIT CN11 ROOM A MID1 R12T CN14 3.15A t° ROOM B S101 t° t° t° t° t°...
Page 293 SiBE12-522 Wiring Diagrams 4MXS68/80DVMB POWER SUPPLY FU201 MID2 ~50Hz 220-240V 3.15A ~60Hz 220-230V FIELD WIRING MRM20 MRM10 X11A TO INDOOR UNIT CN11 ROOM A MID1 R12T CN14 3.15A t° ROOM B ROOM C S101 ROOM D t° t° t° t° t°...
Page 294 SiBE12-522 Index Numerics control PCB (indoor unit) ......35, 38, 40 control PCB (outdoor unit)........48 3 minutes stand-by..........73 cooling / heating mode lock........87 CT or related abnormality........198 A1................175 A5..............176, 185 DC fan lock............189 A6..............178, 179 defrost control ............77 address setting jumper....34, 36, 39, 41, 43, 45 diagnosis mode ............
Page 295 SiBE12-522 U0 ..............208 insufficient gas control..........82 U2 ..............210 INTELLIGENT EYE ..........59 U4 ..............183 INTELLIGENT EYE operation ......132 UA............184, 211 INTELLIGENT EYE sensor ........266 UH ..............211 INTELLIGENT EYE sensor PCB...... 35, 40 error codes and description of fault.......172 inverter PCB ..........
Page 296 SiBE12-522 overload ..............82 S301 ............... 45 overload relay............250 S302 ............... 45 S31 ..........43, 45, 48, 237, 254 S32 ..... 34, 36, 39, 41, 43, 45, 48, 237, 254 P4................200 S33 ............48, 237, 254 PCB...............235, 253 S35 ............. 34, 36, 39 photocatalytic deodorizing filter.......63 S36 .............
Page 297 SiBE12-522 troubleshooting with the LED indication ....167 troubleshooting with the operation lamp ....166 turning speed pulse input on the outdoor unit PCB check..............220 U0................208 U2................210 U4................183 UA ..............184, 211 UH .................211 unspecified voltage (between indoor and outdoor units) ..184, 211 V1..........34, 36, 39, 41, 43, 45 varistor ..........34, 36, 39, 41, 43 voltage detection function ........86...
Page 298 SiBE12-522 Drawings & Flow Charts HOME LEAVE operation ........61 anti-icing function in other rooms ......211 ARC433A ..............169 indoor unit PCB abnormality ........ 175 automatic air flow control ........53 input current control ..........74 automatic operation..........55 input over current detection........190 auto-swing...............52 installation condition check ........
Page 299 SiBE12-522 ATXS50DVMB ..........269 ATXS50CVMB ..........277 CDK(X)S50/60CVMB ........269 ATXS50DVMB ..........277 CTK(X)S50D(2)VMW(L) .........268 CDK(X)S50/60CVMB........278 FDK(X)S25/35CVMB ........269 CTK(X)S50D(2)VMW(L) ........ 276 FLKS25/35BVMB ...........270 FDK(X)S25/35CVMB ........278 FLKS50/60BVMB ...........270 FLK(X)S25/35/50/60BVMB......278 FLXS25/35BVMB ...........270 FTK(X)S20/25/35CVMB(9)(8)......276 FLXS50/60BVMB ...........270 FTK(X)S20/25/35D(2)VMW(L)(9) ....276 FTK(X)S20/25/35D(2)VMW(L)(9) ....268 FTK(X)S50BVMB...........
Page 300 Improper installation can result in water or refrigerant leakage, electrical shock, fire or explosion. Use only those parts and accessories supplied or specified by Daikin. Ask a qualified installer or contractor to install those parts and accessories. Use of unauthorized parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage, electrical shock, fire or explosion.

Daikin D-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 System Configuration

Part 6 Service Diagnosis

Part 7 Removal Procedure

Part 8 Others

Part 9 Appendix

Quick Links

Troubleshooting

Related Manuals for Daikin D-Series

Summary of Contents for Daikin D-Series

Table of Contents