Page 1 SiENBE12-713 Service Manual F-Series [Applied Models] ! Inverter pair Cooling mode ! Inverter pair Heating mode...
Page 2 SiENBE12-713 SUPER MULTI NX F-Series !Cooling Only Indoor Unit FTKS20D3VMW FTKS20CAVMB FDKS25CAVMB FLKS25BAVMB FTKS20D3VML FTKS25CAVMB FDKS35CAVMB FLKS35BAVMB FTKS25D3VMW FTKS35CAVMB FDKS50CVMB FLKS50BAVMB FTKS25D3VML FTKS50FV1B FDKS60CVMB FLKS60BAVMB FTKS35D3VMW FTKS60FV1B FDKS25EAVMB FVXS25FV1B FTKS35D3VML FTKS71FV1B FDKS35EAVMB FVXS35FV1B FTKS50D2V1W FVXS50FV1B FTKS50D2V1L FHQ35BVV1B FHQ50BVV1B FHQ60BVV1B Outdoor Unit...
Page 3: Table Of Contents
SiENBE12-713 1. Introduction .....................v 1.1 Safety Cautions ..................v 1.2 Used Icons ....................ix Part 1 List of Functions ..............1 1. List of Functions ..................2 1.1 Cooling Only Models ................2 1.2 Heat Pump Models...................7 Part 2 Specifications ..............13 1. Specifications ..................14 1.1 Indoor Units - Cooling Only ..............14 1.2 Outdoor Units - Cooling Only ..............23 1.3 Indoor Units - Heat Pump...............24...
Page 4 SiENBE12-713 3.6 Freeze-up Protection Control ..............89 3.7 Heating Peak-cut Control ...............89 3.8 Fan Control.....................90 3.9 Liquid Compression Protection Function 2..........90 3.10 Defrost Control ..................91 3.11 Electronic Expansion Valve Control ............92 3.12 Malfunctions ...................96 3.13 Forced Operation Mode .................97 3.14 Wiring-Error Check.................98 3.15 Additional Function................100 Part 5 Operation Manual ............
Page 5 SiENBE12-713 5.22 Electrical Box Temperature Rise............265 5.23 Radiation Fin Temperature Rise ............267 5.24 Output Over Current Detection.............269 5.25 Insufficient Gas..................271 5.26 Low-voltage Detection or Over-voltage Detection........273 5.27 Signal Transmission Error (on Outdoor Unit PCB).......274 5.28 Anti-icing Function in Other Rooms / Unspecified Voltage (between Indoor and Outdoor Units) ............275 6.
Page 6: Introduction
SiENBE12-713 Introduction 1. Introduction Safety Cautions " Be sure to read the following safety cautions before conducting repair work. Cautions and " The caution items are classified into “ Warnings Warning” and “ Caution”. The “ Warning” items are especially important since they can lead to death or serious injury if they are not followed closely.
Page 7 Introduction SiENBE12-713 Warning Be sure to wear a safety helmet, gloves, and a safety belt when working at a high place (more than 2m). Insufficient safety measures may cause a fall accident. In case of R410A refrigerant models, be sure to use pipes, flare nuts and tools for the exclusive use of the R410A refrigerant.
Page 8 SiENBE12-713 Introduction 1.1.2 Cautions Regarding Safety of Users Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools may cause an electrical shock, excessive heat generation or fire.
Page 9 Introduction SiENBE12-713 Warning Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet securely. If the plug has dust or loose connection, it may cause an electrical shock or fire. Be sure to install the product correctly by using the provided standard For unitary type installation frame.
Page 10: Used Icons
SiENBE12-713 Introduction Caution Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 MΩ or higher. Faulty insulation may cause an electrical shock. Be sure to check the drainage of the indoor unit after the repair. Faulty drainage may cause the water to enter the room and wet the furniture and floor.
Page 11 Introduction SiENBE12-713...
Page 12: Part 1 List Of Functions
SiENBE12-713 Part 1 List of Functions 1. List of Functions ..................2 1.1 Cooling Only Models ................2 1.2 Heat Pump Models...................7 List of Functions...
Page 13: List Of Functions
List of Functions SiENBE12-713 1. List of Functions Cooling Only Models Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Operation Limit for Heating (°CWB) —...
Page 14 SiENBE12-713 List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Operation Limit for Heating (°CWB) — — Photocatalytic Deodorizing Filter —...
Page 15 List of Functions SiENBE12-713 Category Functions Category Functions # Health & Basic Inverter (with Inverter Power Control) Air Purifying Filter — — — Function Clean Operation Limit for Cooling (°CDB) — — — Photocatalytic Deodorizing Filter — — — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
Page 16 SiENBE12-713 List of Functions Category Functions Category Functions # Health & Basic Inverter (with Inverter Power Control) Air Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — — Photocatalytic Deodorizing Filter — — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
Page 17 List of Functions SiENBE12-713 Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — Function Clean –10 Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
Page 18: Heat Pump Models
SiENBE12-713 List of Functions Heat Pump Models Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Operation Limit for Heating (°CWB) — — Photocatalytic Deodorizing Filter —...
Page 19 List of Functions SiENBE12-713 Category Functions Category Functions # Health & Basic Inverter (with Inverter Power Control) Air Purifying Filter — — — Function Clean Operation Limit for Cooling (°CDB) — — — Operation Limit for Heating (°CWB) — — —...
Page 20 SiENBE12-713 List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — Function Clean Operation Limit for Cooling (°CDB) — Photocatalytic Deodorizing Filter — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
Page 21 List of Functions SiENBE12-713 Category Functions Category Functions # Health & Basic Inverter (with Inverter Power Control) Air Purifying Filter — — — Function Clean Operation Limit for Cooling (°CDB) — — — Photocatalytic Deodorizing Filter — — — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
Page 22 SiENBE12-713 List of Functions Category Functions Category Functions # Health & Basic Inverter (with Inverter Power Control) Air Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — — Photocatalytic Deodorizing Filter — — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
Page 23 List of Functions SiENBE12-713 Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — Function Clean –10 Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — –15 Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
Page 24: Part 2 Specifications
SiENBE12-713 Part 2 Specifications 1. Specifications ..................14 1.1 Indoor Units - Cooling Only ..............14 1.2 Outdoor Units - Cooling Only ..............23 1.3 Indoor Units - Heat Pump...............24 1.4 Outdoor Units - Heat Pump ..............35 Specifications...
Page 25: Specifications
Specifications SiENBE12-713 1. Specifications Indoor Units - Cooling Only Wall Mounted Type 50Hz 230V Model FTKS20D3VMW FTKS20D3VML 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)
Page 26 SiENBE12-713 Specifications 50Hz 230V Model FTKS35D3VMW FTKS35D3VML 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 27 Specifications SiENBE12-713 50Hz 230V Model FTKS20CAVMB FTKS25CAVMB 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 28 SiENBE12-713 Specifications 50Hz 230V Model FTKS60FV1B FTKS71FV1B Rated Capacity 6.0kW Class 7.1kW Class Front Panel Color White White 16.2 (572) 17.4 (614) 13.6 (480) 14.6 (516) m³/min Air Flow Rates (cfm) 11.4 (403) 11.6 (410) 10.2 (360) 10.6 (374) Type Cross Flow Fan Cross Flow Fan Motor Output...
Page 29 Specifications SiENBE12-713 Duct Connected Type 50Hz 230V Model FDKS25CAVMB FDKS35CAVMB 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 30 SiENBE12-713 Specifications 50Hz 230V Model FDKS25EAVMB FDKS35EAVMB Rated Capacity 2.5kW Class 3.5kW Class — — Front Panel Color 8.7 (307) 8.7 (307) 8.0 (282) 8.0 (282) m³/min Air Flow Rates (cfm) 7.3 (258) 7.3 (258) 6.2 (219) 6.2 (219) Type Sirocco Fan Sirocco Fan Motor Output...
Page 31 Specifications SiENBE12-713 Floor / Ceiling Suspended Dual Type 50Hz 230V Model FLKS25BAVMB FLKS35BAVMB 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 32 SiENBE12-713 Specifications Floor Standing Type 50Hz 230V Model FVXS25FV1B FVXS35FV1B Rated Capacity 2.5kW Class 3.5kW Class Front Panel Color White White 8.2 (290) 8.5 (300) 6.5 (229) 6.7 (237) m³/min Air Flow Rates (cfm) 4.8 (169) 4.9 (174) 4.1 (146) 4.5 (158) Type Turbo Fan...
Page 33 Specifications SiENBE12-713 Ceiling-suspended Type 50Hz 230V Model FHQ35BVV1B FHQ50BVV1B FHQ60BVV1B Rated Capacity 3.5kW Class 5.0kW Class 6.0kW Class Color White White White Decoration Panel Dimensions (H×W×D) — — — 13.0 (458) 13.0 (458) 17.0 (600) — — — m³/min Air Flow Rates (cfm) 10.0 (353) 10.0 (353)
Page 34: Outdoor Units - Cooling Only
SiENBE12-713 Specifications Outdoor Units - Cooling Only 50Hz 230V Model 4MKS75F2V1B — Cooling Capacity — Power Consumption — Running Current Casing Color Ivory White Type Hermetically Sealed Swing Type Compressor Model 2YC45DXD Motor Output 1,380 Model FVC50K Refrigerant Oil Charge 0.65 Type R-410A...
Page 35: Indoor Units - Heat Pump
Specifications SiENBE12-713 Indoor Units - Heat Pump Wall Mounted Type 50Hz 230V FTXG25EV1BW FTXG25EV1BS Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 2.5kW Class Front Panel Color Mat Crystal White Mat Crystal Silver 7.7 (271) 9.0 (317) 7.7 (271) 9.0 (317) 6.1 (215) 7.9 (278)
Page 36 SiENBE12-713 Specifications 50Hz 230V CTXG50EV1BW CTXG50EV1BS Model Cooling Heating Cooling Heating Rated Capacity 5.0kW Class 5.0kW Class Front Panel Color Mat Crystal White Mat Crystal Silver 11.3 (398) 12.6 (444) 11.3 (398) 12.6 (444) 9.1 (320) 10.6 (373) 9.1 (320) 10.6 (373) m³/min Air Flow Rates...
Page 37 Specifications SiENBE12-713 50Hz 230V FTXS25D3VMW FTXS25D3VML Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 2.5kW 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) m³/min Air Flow Rates (cfm) 4.7 (166)
Page 38 SiENBE12-713 Specifications 50Hz 230V FTXS50D2V1W FTXS50D2V1L Model Cooling Heating Cooling Heating Rated Capacity 5.0kW Class 5.0kW Class Front Panel Color White White 11.4 (402) 11.4 (402) 11.4 (402) 11.4 (402) 9.3 (328) 9.4 (332) 9.3 (328) 9.4 (332) m³/min Air Flow Rates (cfm) 7.1 (251) 7.4 (261)
Page 39 Specifications SiENBE12-713 50Hz 230V FTXS35CAVMB Model Cooling Heating Rated Capacity 3.5kW Class Front Panel Color White 7.7 (272) 8.1 (286) 6.0 (212) 6.7 (237) m³/min Air Flow Rates (cfm) 4.4 (155) 5.3 (187) 3.8 (134) 4.6 (162) Type Cross Flow Fan Motor Output Speed Steps...
Page 40 SiENBE12-713 Specifications 50Hz 230V FTXS71FV1B Model Cooling Heating Rated Capacity 7.1kW Class Front Panel Color White 17.4 (614) 19.7 (696) 14.6 (516) 16.9 (597) m³/min Air Flow Rates (cfm) 11.6 (410) 14.3 (505) 10.6 (374) 12.7 (448) Type Cross Flow Fan Motor Output Speed Steps...
Page 41 Specifications SiENBE12-713 Duct Connected Type 50Hz 230V FDXS25CAVMB FDXS35CAVMB 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 42 SiENBE12-713 Specifications 50Hz 230V FDXS25EAVMB FDXS35EAVMB Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class — — Front Panel Color 8.7 (307) 8.7 (307) 8.7 (307) 8.7 (307) 8.0 (282) 8.0 (282) 8.0 (282) 8.0 (282) m³/min Air Flow Rates (cfm) 7.3 (258) 7.3 (258)
Page 43 Specifications SiENBE12-713 Floor / Ceiling Suspended Dual Type 50Hz 230V FLXS25BAVMB FLXS35BAVMB 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 44 SiENBE12-713 Specifications Floor Standing Type 50Hz 230V FVXS25FV1B FVXS35FV1B Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class Front Panel Color White White Air Flow Rates 8.2 (290) 8.8 (311) 8.5 (300) 9.4 (332) 6.5 (229) 6.9 (244) 6.7 (237) 7.3 (258) m³/min...
Page 45 Specifications SiENBE12-713 Ceiling-suspended Type 50Hz 230V FHQ35BVV1B FHQ50BVV1B FHQ60BVV1B Model Cooling Heating Cooling Heating Cooling Heating Rated Capacity 3.5kW Class 5.0kW Class 6.0kW Class Color White White White Decoration Panel Dimensions (H×W×D) — — — 13.0 (458) 13.0 (458) 13.0 (458) 13.0 (458) 17.0 (600) 16.0 (565)
Page 46: Outdoor Units - Heat Pump
SiENBE12-713 Specifications Outdoor Units - Heat Pump 50Hz 230V 4MXS68F2V1B Model Cooling Heating — Cooling Capacity — Power Consumption — Running Current Casing Color Ivory White Type Hermetically Sealed Swing Type Compressor Model 2YC45DXD Motor Output 1,380 Model FVC50K Refrigerant Oil Charge 0.65 Type...
Page 47 Specifications SiENBE12-713 Specifications...
Page 48: Part 3 Printed Circuit Board Connector Wiring Diagram
SiENBE12-713 Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........38 1.1 Wall Mounted Type ................38 1.2 Duct Connected Type................47 1.3 Floor / Ceiling Suspended Dual Type.............49 1.4 Floor Standing Type ................52 1.5 Ceiling Suspended Type ................54 1.6 Outdoor Units ..................56 Printed Circuit Board Connector Wiring Diagram...
Page 49: Printed Circuit Board Connector Wiring Diagram
Printed Circuit Board Connector Wiring Diagram SiENBE12-713 1. Printed Circuit Board Connector Wiring Diagram Wall Mounted Type 1.1.1 FTK(X)S20~50D Connectors PCB(1) (Control PCB) 1) S1 Connector for DC fan motor 2) S6 Connector for swing motor (horizontal blades) 3) S21 Connector for centralized control (HA) 4) S26 Connector for display PCB...
Page 50 SiENBE12-713 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 (R5183) (R4290) PCB(4): INTELLIGENT EYE sensor PCB (R4291) Printed Circuit Board Connector Wiring Diagram...
Page 51 Printed Circuit Board Connector Wiring Diagram SiENBE12-713 1.1.2 FTK(X)S20~35C Connectors PCB(1) (Control PCB) PCB(2) (Signal Receiver PCB) 1) S1 Connector for fan motor 2) S6 Connector for swing motor (Horizontal Flap) 3) S7 Connector for fan motor 4) S21 Connector for centralized control to 5 rooms 5) S26 Connector for signal receiver PCB 6) S27...
Page 52 SiENBE12-713 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 53 Printed Circuit Board Connector Wiring Diagram SiENBE12-713 PCB Detail PCB(1): Control PCB PCB(2): Signal Receiver PCB Control PCB Signal Receiver PCB LED1 LED2 LED3 RTH1 5V Check 12V Check LED A (R4987) PCB(3): INTELLIGENT EYE sensor PCB (R4988) Printed Circuit Board Connector Wiring Diagram...
Page 54 SiENBE12-713 Printed Circuit Board Connector Wiring Diagram 1.1.3 FTK(X)S50~71F Connectors PCB(1) (Control PCB) 1) S1 Connector for DC fan motor 2) S6 Connector for swing motor (horizontal blades) 3) S8 Connector for swing motor (vertical blades) 4) S21 Connector for centralized control (HA) 5) S26 Connector for buzzer PCB 6) S28...
Page 55 Printed Circuit Board Connector Wiring Diagram SiENBE12-713 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 56 SiENBE12-713 Printed Circuit Board Connector Wiring Diagram 1.1.4 FTXG25~35E, CTXG50E Connectors PCB(1) (Control PCB) 1) S1 Connector for fan motor 2) S21 Connector for centralized control (HA) 3) S32 Connector for heat exchanger thermistor 4) S36 Connector for INTELLIGENT EYE sensor PCB and control 5) S41 Connector for swing motor 6) S46...
Page 57 Printed Circuit Board Connector Wiring Diagram SiENBE12-713 PCB Detail PCB(1): Control PCB (indoor unit) JA JC LED A (R4991) PCB(2): Signal Receiver PCB RTH1 LED4 LED2 LED3 (R4992) PCB(3): INTELLIGENT EYE sensor PCB (R4988) Printed Circuit Board Connector Wiring Diagram...
Page 58: Duct Connected Type
SiENBE12-713 Printed Circuit Board Connector Wiring Diagram Duct Connected Type Connectors PCB(1) (Control PCB) 1) S1 Connector for AC fan motor 2) S7 Connector for AC fan motor 3) S21 Connector for centralized control to 5 rooms 4) S26 Connector for display PCB 5) S32 Connector for heat exchanger thermistor PCB(2) (Display PCB)
Page 59 Printed Circuit Board Connector Wiring Diagram SiENBE12-713 PCB Detail PCB (2): Display PCB 2P084375 Printed Circuit Board Connector Wiring Diagram...
Page 60: Floor / Ceiling Suspended Dual Type
SiENBE12-713 Printed Circuit Board Connector Wiring Diagram Floor / Ceiling Suspended Dual Type Connectors PCB(1) (Control PCB) 1) S6 Connector for swing motor (horizontal swing) 2) S7 Connector for AC fan motor 3) S21 Connector for centralized control 4) S24 Connector for display PCB 5) S26 Connector for signal receiver PCB...
Page 61 Printed Circuit Board Connector Wiring Diagram SiENBE12-713 PCB Detail PCB (1): Control PCB PCB Detail PCB (2): Power Supply PCB Printed Circuit Board Connector Wiring Diagram...
Page 62 SiENBE12-713 Printed Circuit Board Connector Wiring Diagram PCB (3): Display PCB PCB (4): Signal Receiver PCB EX511 REV 12 PHOTO 2P084377- 1 S31(RTH) (R6057) Printed Circuit Board Connector Wiring Diagram...
Page 63: Floor Standing Type
Printed Circuit Board Connector Wiring Diagram SiENBE12-713 Floor Standing Type Connectors PCB(1) (Sensor PCB) 1) S49 Connector for control PCB PCB(2) (Control PCB) 1) S1 Connector for fan motor 2) S21 Connector for centralized control 3) S26 Connector for service PCB 4) S41 Connector for lower air outlet motor 5) S42...
Page 64 SiENBE12-713 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Sensor PCB 3P191450 PCB(2): Control PCB LED A 2P191446 PCB(3): Service PCB PCB(3): Display PCB LED1 LED2 3P191447 3P191448 Printed Circuit Board Connector Wiring Diagram...
Page 65: Ceiling Suspended Type
Printed Circuit Board Connector Wiring Diagram SiENBE12-713 Ceiling Suspended Type Connectors 1) X5A Connector for Terminal Strip (for Wired Remote Control) 2) X14A Connector for Limit Switch (for Swing Flap) 3) X15A Connector for Drain Pump (Optional Accessory) 4) X17A Connector for Heat Exchanger Thermistor (2) 5) X18A Connector for Heat Exchanger Thermistor (1)
Page 66 SiENBE12-713 Printed Circuit Board Connector Wiring Diagram PCB Detail Capacity X19A X18A X40A X15A setting adaptor X14A X17A X61A X35A X60A X33A (Service monitor LED) X24A X26A X29A X27A X20A X25A 2P095007 Printed Circuit Board Connector Wiring Diagram...
Page 67: Outdoor Units
Printed Circuit Board Connector Wiring Diagram SiENBE12-713 Outdoor Units Connectors PCB(1)(Main PCB) 1) S10 Connector for terminal strip (indoor-outdoor transmission) 2) S15 Connector for COOL / HEAT mode lock 3) S20 Connector for electronic expansion valve coil A port (white) 4) S21 Connector for electronic expansion valve coil B port (red) 5) S22...
Page 68 SiENBE12-713 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Main PCB FU2(3.15A) V100 (30A) S101 FU3(3.15A) 2P194316 Printed Circuit Board Connector Wiring Diagram...
Page 69 Printed Circuit Board Connector Wiring Diagram SiENBE12-713 PCB(2): Service Monitor PCB Printed Circuit Board Connector Wiring Diagram...
Page 70: Part 4 Function And Control
SiENBE12-713 Part 4 Function and Control 1. Main Functions..................60 1.1 Frequency Principle................60 1.2 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing ..62 1.3 Operation Starting Control..............64 1.4 Fan Speed Control for Indoor Units............65 1.5 Programme Dry Function ...............66 1.6 Automatic Operation................67 1.7 Thermostat Control.................68 1.8 Night Set Mode..................69 1.9 ECONO Mode ..................70...
Page 71: Main Functions
Main Functions SiENBE12-713 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 "...
Page 72 SiENBE12-713 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 73: Power-Airflow Dual Flaps, Wide Angle Louvers And Auto-Swing
Main Functions SiENBE12-713 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 74 SiENBE12-713 Main Functions FTK(X)S20-50D The vertical swing flap is controlled not to blow the air directly on the person in the room. " The airflow rate is controlled automatically within the following steps. Cooling: L tap – MH tap (same as AUTOMATIC) Heating: ML tap –...
Page 75: Operation Starting Control
Main Functions SiENBE12-713 Operation Starting Control FTXG25-35E, CTXG50E The system carries out the following control at the beginning to conduct every functional parts properly. 1. Opening the front panel fully 2. Output of the ΔD signal after the front panel starts moving 3.
Page 76: Fan Speed Control For Indoor Units
SiENBE12-713 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 239.
Page 77: Programme Dry Function
Main Functions SiENBE12-713 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 78: Automatic Operation
SiENBE12-713 Main Functions Automatic Operation Automatic Cooling / Heating Function (Heat Pump Only) When the AUTO mode is selected with the remote control, 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 79: Thermostat Control
Main Functions SiENBE12-713 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 80: Night Set Mode
SiENBE12-713 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 81: Econo Mode
Main Functions SiENBE12-713 ECONO Mode Outline FTK(X)S20-50D, FVXS25-50F 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 82: Intelligent Eye (Wall Mounted Type Only)
SiENBE12-713 Main Functions 1.10 INTELLIGENT EYE (Wall Mounted Type Only) 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.
Page 83 Main Functions SiENBE12-713 " 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 84: Home Leave Operation
SiENBE12-713 Main Functions 1.11 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 85: Inverter Powerful Operation
Main Functions SiENBE12-713 1.12 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 Control temperature will be converted to the following states in a period of twenty minutes.
Page 86: Other Functions
SiENBE12-713 Main Functions 1.13 Other Functions 1.13.1 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 87 Main Functions SiENBE12-713 1.13.4 Titanium Apatite Photocatalytic Air-Purifying Filter For FTK(X)S20-50D, FTK(X)S50-71F, FVXS25-50F, FTXG25/35E, CTXG50E This filter combines the Air Purifying Filter and Titanium Apatite Photocatalytic Deodorizing Filter in a single highly effective unit. The filter traps microscopic particles, decompose odours and even deactivates bacteria and viruses.
Page 88: Function Of Main Structural Parts
SiENBE12-713 Function of Main Structural Parts 2. Function of Main Structural Parts Main Structural Parts Heat Pump Model Expansion valve Four way valve (R5066) Compressor Cooling Only Model Expansion valve Compressor (R4596) Note: Expansion Valve : In Case of 2 port model..EVA-B, 3 port model..EVA-C, 4 port model..EVA-D Function and Control...
Page 89: Function Of Thermistor
Function of Main Structural Parts SiENBE12-713 Function of Thermistor 2.2.1 Heat Pump Model Expansion valve Four way valve Compressor (R5067) 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 target discharge temperature can be obtained.
Page 90 SiENBE12-713 Function of Main Structural Parts D Indoor Heat 1. The indoor heat exchanger thermistors are used for controlling target discharge Exchanger temperature. The system sets a target discharge pipe temperature according to the outdoor and indoor Thermistor heat exchanger temperature, and controls the electronic expansion valve opening so that the target discharge temperature can be obtained.
Page 91 Function of Main Structural Parts SiENBE12-713 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. 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 92 SiENBE12-713 Function of Main Structural Parts D Indoor Heat 1. The indoor heat exchanger thermistors are used for controlling target discharge Exchanger temperature. The system sets a target discharge pipe temperature according to the outdoor and indoor Thermistor heat exchanger temperature, and controls the electronic expansion valve opening so that the target discharge temperature can be obtained.
Page 93: Control Specification
Control Specification SiENBE12-713 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 94: Frequency Control
SiENBE12-713 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 control. The function is explained as follows. 1.
Page 95 Control Specification SiENBE12-713 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.
Page 96 SiENBE12-713 Control Specification 5. Upper and lower limit of frequency by PI control The frequency upper and lower limits are set depending on the total of S values of a room. When low noise commands come from the indoor unit more than one room or when outdoor unit low noise or quiet commands come from all the rooms, the upper limit frequency must be lowered than the usual setting.
Page 97: Controls At Mode Changing / Start-Up
Control Specification SiENBE12-713 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. The power consumption of preheating operation is 35W. (The total power consumption depends on the number of the indoor units.) Detail Preheating ON Condition...
Page 98: Compressor Protection Function
SiENBE12-713 Control Specification 3.3.5 Compressor Protection Function When turning the compressor from OFF to ON, the upper limit of frequency must be set as follows. (The function must not be used when defrosting (only for heat pump model).) Frequency 2YC45 FCG3 FCG 3 FCG2...
Page 99: Discharge Pipe Control
Control Specification SiENBE12-713 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) Stop zone...
Page 100: Freeze-Up Protection Control
SiENBE12-713 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. Detail Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 sec from operation start and after 30 sec from changing number of operation room.
Page 101: Fan Control
Control Specification SiENBE12-713 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 102: Defrost Control
SiENBE12-713 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 Under the conditions that the system is in heating operation, 6 minutes after the compressor is started and more than 38 minutes of accumulated time pass since the start of the operation or ending the defrosting.
Page 103: Electronic Expansion Valve Control
Control Specification SiENBE12-713 3.11 Electronic Expansion Valve Control Outline The following items are included in the electronic expansion valve control. Electronic expansion valve is fully closed 1. Electronic expansion valve is fully closed when turning on the power. 2. Pressure equalizing control Room Distribution Control 1.
Page 104 SiENBE12-713 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 105 Control Specification SiENBE12-713 3.11.1 Fully Closing with Power ON Initialize the electronic expansion valve when turning on the power, set the opening position and develop pressure equalizing. The electronic expansion valves are closed further with 720 pulse, and then opened with 150 pulse.
Page 106 SiENBE12-713 Control Specification 3.11.7 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 107: Malfunctions
Control Specification SiENBE12-713 3.12 Malfunctions 3.12.1 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 108: Forced Operation Mode
SiENBE12-713 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 109: Wiring-Error Check
Control Specification SiENBE12-713 3.14 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 110 SiENBE12-713 Control Specification Checking the Those data can be checked by looking at the service monitor LED indicators, when the wiring current setting error checking is over, during forced operation, at the stop of the system. The LED indicators stop flashing when the forced operation is over. data on the LED1…Room A wiring, LED2…Room B wiring microcomputer...
Page 111: Additional Function
Control Specification SiENBE12-713 3.15 Additional Function 3.15.1 Priority Room Setting Electronic expansion valves are controlled to provide the unit designated as the priority room with the capacity of other room units. (Distribution of capacity: Priority room unit --- ΔD Max., other room units --- ΔD -α) $ Setting method Turn off the circuit breaker before changing the setting.
Page 112 SiENBE12-713 Control Specification 3.15.3 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 113 Control Specification SiENBE12-713 Function and Control...
Page 114: Part 5 Operation Manual
SiENBE12-713 Part 5 Operation Manual 1. System Configuration................104 1.1 Operation Instructions ................104 2. Instruction....................105 2.1 FTK(X)S, FTXG, CTXG, FDK(X)S, FLK(X)S Series ......105 2.2 FVXS Series..................181 2.3 FHQ Series...................212 Operation Manual...
Page 115: System Configuration
System Configuration SiENBE12-713 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 116: Instruction
SiENBE12-713 Instruction 2. Instruction FTK(X)S, FTXG, CTXG, FDK(X)S, FLK(X)S Series 2.1.1 Manual Contents and Reference Page Wall Mounted Type Model Series FTXG25/35E FTK(X)S20/25/35/50D FTK(X)S20/25/35C FTK(X)S50/60/71F CTXG50E Read before Operation Safety Precautions Names of Parts Preparation before Operation H Operation AUTO, DRY, COOL, HEAT, FAN Operation H Adjusting the Air Flow Direction POWERFUL Operation H...
Page 117: 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 118 SiENBE12-713 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 119 Instruction SiENBE12-713 2.1.3 Names of Parts FTK(X)S 20/25/35/50 D " Indoor Unit ON/OFF System Configuration...
Page 120 SiENBE12-713 Instruction " Outdoor Unit " Indoor Unit 1. Air filter 12. Indoor Unit ON/OFF switch: 2. Titanium Apatite Photocatalytic Air- • Push this switch once to start operation. Purifying Filter: Push once again to stop it. • These filters are attached to the inside of •...
Page 121 Instruction SiENBE12-713 " Remote control ECONO ON/OFF TEMP POWERFUL MODE SWING QUIET COMFORT SENSOR CANCEL TIMER < > ARC433B50, B43 1. Signal transmitter: 8. QUIET button: OUTDOOR UNIT QUIET • It sends signals to the indoor unit. operation 2. Display: 9.
Page 122 SiENBE12-713 Instruction Names of Parts FTK(X)S 20/25/35 C " Indoor Unit System Configuration...
Page 123 Instruction SiENBE12-713 " Outdoor Unit " Indoor Unit 1. Air filter 12. Indoor Unit ON/OFF switch: 2. Air purifying filter with photocatalystic • Push this switch once to start operation. deodorizing function: Push once again to stop it. • These filters are attached to the inside of •...
Page 124 SiENBE12-713 Instruction " Remote control < ARC433B1, B2 > 1. Signal transmitter: 8. QUIET button: OUTDOOR UNIT QUIET • It sends signals to the indoor unit. operation 2. Display: 9. FAN setting button: • It displays the current settings. • It selects the air flow rate setting.
Page 125 Instruction SiENBE12-713 Names of Parts FTK(X)S 50/60/71 F " Indoor Unit System Configuration...
Page 126 SiENBE12-713 Instruction " Outdoor Unit 50/60 class 71 class " Indoor Unit 1. Air filter 14. HOME LEAVE lamp (red) 2. Titanium Apatite Photocatalytic Air- • Lights up when you use HOME LEAVE Purifying Filter Operation. 3. Air inlet 15. Indoor Unit ON/OFF switch: 4.
Page 127 Instruction SiENBE12-713 " Remote control CANCEL TIMER ARC433B70, 71 1. Signal transmitter: 8. QUIET button: OUTDOOR UNIT QUIET • It sends signals to the indoor unit. operation 2. Display: 9. FAN setting button: • It displays the current settings. • It selects the air flow rate setting.
Page 128 SiENBE12-713 Instruction Names of Parts FTXG 25/35 E, CTXG 50 E " Indoor Unit (With the panel closed) System Configuration...
Page 129 Instruction SiENBE12-713 " Outdoor Unit " Indoor Unit 1. Air filter 12. Indoor Unit ON/OFF switch: 2. Titanium Apatite Photocatalytic Air- • Push this switch once to start operation. Purifying Filter: Push once again to stop it. • These filters are attached to the inside of •...
Page 130 SiENBE12-713 Instruction " Remote control QUIET 1. Signal transmitter: 8. SILENT button: OUTDOOR UNIT SILENT • It sends signals to the indoor unit. operation 2. Display: 9. FAN setting button: • It displays the current settings. • It selects the air flow rate setting. (In this illustration, each section is shown 10.
Page 131 Instruction SiENBE12-713 Names of Parts FDK(X)S 25/35/50/60 C, FDK(X)S 25/35 E " Indoor Unit System Configuration...
Page 132 SiENBE12-713 Instruction " Outdoor Unit " Indoor Unit 1. Air outlet 10. Indoor Unit ON/OFF switch: 2. Air outlet grille: • Push this switch once to start operation. • (Field supply) Appearance of the Air inlet Push once again to stop it. grille may differ with some models.
Page 133 Instruction SiENBE12-713 " Remote control < ARC433B69, B76 > 1. Signal transmitter: 8. QUIET button: OUTDOOR UNIT QUIET • It sends signals to the indoor unit. operation 2. Display: 9. FAN setting button: • It displays the current settings. • It selects the air flow rate setting.
Page 134 SiENBE12-713 Instruction Names of Parts FLK(X)S 25/35/50/60 B " Indoor Unit The indoor unit can be installed either to the ceiling or to a wall. The descriptions contained in this manual show the case when installation is being carried out to the ceiling. (The methodes of operation used are the same when installing to a wall.) "...
Page 135 Instruction SiENBE12-713 " Outdoor Unit " Indoor Unit 1. Louvers (vertical blades): 13. Indoor Unit ON/OFF switch: • The louvers are inside of the air outlet. • Push this switch once to start operation. 2. Air outlet Push once again to stop it. 3.
Page 136 SiENBE12-713 Instruction " Remote control HOME LEAVE ON/OFF TEMP POWERFUL MODE SWING QUIET < ARC433B67, B68 > 1. Signal transmitter: 8. QUIET button: OUTDOOR UNIT QUIET • It sends signals to the indoor unit. operation 2. Display: 9. FAN setting button: •...
Page 137 Instruction SiENBE12-713 2.1.4 Preparation Before Operation " To set the batteries 1. Slide the front cover to take it off. Position correctly! 2. Set two dry batteries (AAA). 3. Set the front cover as before. ATTENTION " About batteries • When replacing the batteries, use batteries of the same type, and replace the two old batteries together.
Page 138 SiENBE12-713 Instruction " To operate the remote control • To use the remote control, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote control, such as a curtain, the unit will not operate. •...
Page 139 Instruction SiENBE12-713 " To set the clock 1. Press “CLOCK button”. 0:00 is displayed. blinks. 2. Press “TIMER setting button” to set the clock to the present time. Holding down “ ” or “ ” button rapidly increases or decreases the time display. 3.
Page 140 SiENBE12-713 Instruction 2.1.5 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. " To start operation 1. Press “MODE selector button” and select a operation mode.
Page 141 Instruction SiENBE12-713 " To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode The air flow rate setting is not variable Five levels of air flow rate setting from “ “...
Page 142 SiENBE12-713 Instruction 2.1.6 Adjusting the air flow direction FTK(X)S 20/25/35/50 D You can adjust the air flow direction to increase your comfort. " To adjust the horizontal blades (flaps) 1. Press “SWING button”. The display on the LCD and the flaps will begin to swing.
Page 143 Instruction SiENBE12-713 " To start COMFORT AIRFLOW operation 1. 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) The flap will go down.
Page 144 SiENBE12-713 Instruction Adjusting the air flow direction FTK(X)S 20/25/35 C You can adjust the air flow direction to increase your comfort. " To adjust the horizontal blades (flaps) 1. Press “SWING button”. The display on the LCD and the flaps will begin to swing.
Page 145 Instruction SiENBE12-713 " To adjust the vertical blades (louvers) Hold the knob and move the louvers. (You will find a knob on the left-side and the right-side blades.) Notes on flaps and louvers angles • When “SWING button” is selected, the flaps swinging range depends on the operation mode.
Page 146 SiENBE12-713 Instruction Adjusting the air flow direction FTK(X)S 50/60/71 F You can adjust the air flow direction to increase your comfort. " To adjust the horizontal blades (flaps) 1. Press “SWING button ”. • “ ”The display on the LCD and the flaps will begin to swing.
Page 147 Instruction SiENBE12-713 " 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 148 SiENBE12-713 Instruction Adjusting the air flow direction FTXG 25/35 E, CTXG 50 E You can adjust the air flow direction to increase your comfort. " To adjust the horizontal blades (flaps) 1. Press “SWING button”. The display on the LCD. 2.
Page 149 Instruction SiENBE12-713 " To start COMFORT AIRFLOW operation 5. Press “COMFORT AIRFLOW button”. • The flap orientation will change, preventing air from blowing directly on the occupants of the room. • “ ” is displayed on LCD. <COOL/DRY> The flap will go up. <HEAT>...
Page 150 SiENBE12-713 Instruction Adjusting the air flow direction FLK(X)S 25/35/50/60 B You can adjust the air flow direction to increase your comfort. " To adjust the horizontal blades (flaps) 1. Press “SWING button”. The display on the LCD and the flaps will begin to swing.
Page 151 Instruction SiENBE12-713 " To adjust the vertical blades (louvers) • When adjusting the louver, use a robust and stable stool and watch your steps carefully. Hold the knob and move the louvers. (You will find a knob on the left side and the right side blades.) Notes on flap and louvers angles.
Page 152 SiENBE12-713 Instruction 2.1.7 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 again with the settings which were used before POWERFUL operation.
Page 153 Instruction SiENBE12-713 2.1.8 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. " To start OUTDOOR UNIT QUIET operation 1.
Page 154 SiENBE12-713 Instruction 2.1.9 ECONO Operation ECONO operation is a function which enables efficient operation by lowering the maximum power consumption value. " To start ECONO operation 1. Press “ECONO button”. • “ ” is displayed on the LCD. " To cancel ECONO operation 2.
Page 155 Instruction SiENBE12-713 2.1.10 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”. • “ ” is displayed on the LCD. •...
Page 156 SiENBE12-713 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 favorite set temperature and air flow rate. You can start your favorite operation mode simply by pressing the HOME LEAVE button on the remote control.
Page 157 Instruction SiENBE12-713 2.1.11 INTELLIGENT EYE Operation FTK(X)S 20/25/35/50 D “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. " To cancel the INTELLIGENT EYE operation 2.
Page 158 SiENBE12-713 Instruction “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 159 Instruction SiENBE12-713 INTELLIGENT EYE Operation FTK(X)S 20/25/35 C “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. " To cancel the INTELLIGENT EYE operation 2.
Page 160 SiENBE12-713 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 an left of centre) INTELLIGENT EYE sensor •...
Page 161 Instruction SiENBE12-713 FTK(X)S 50/60/71 F “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. " To cancel the INTELLIGENT EYE operation 2.
Page 162 SiENBE12-713 Instruction “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 163 Instruction SiENBE12-713 INTELLIGENT EYE Operation FTXG 25/35 E, CTXG 50 E “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 164 SiENBE12-713 Instruction “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 165 Instruction SiENBE12-713 2.1.12 TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. " To use OFF TIMER operation •...
Page 166 SiENBE12-713 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”. • 6:00 is displayed. • “ “blinks. 2. Press “TIMER Setting button” until the time setting reaches the point you like.
Page 167 Instruction SiENBE12-713 2.1.13 Note for Multi System <<What is a “Multi System”? >> This system has one outdoor unit connected to multiple indoor units. " Selecting the Operation Mode Outdoor 1. With the Priority Room Setting present but room unit inactive or not present When more than one indoor unit is operating, room...
Page 168 SiENBE12-713 Instruction Note for Multi System " Priority Room Setting The Priority Room Setting requires initial programming during installation. Please consult your retailer or dealer for assistance. The room designated as the Priority Room takes priority in the following situations: 1.
Page 169 Instruction SiENBE12-713 2.1.14 Care and cleaning FTK(X)S 20/25/35/50 D CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. UNITS " Indoor unit, Outdoor unit and Remote control 1. Wipe them with dry soft cloth. " Front panel 1.
Page 170 SiENBE12-713 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 171 Instruction SiENBE12-713 NOTES • 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 where you bought the air conditioner.
Page 172 SiENBE12-713 Instruction FTK(X)S 20/25/35 C CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. UNITS " Indoor unit, outdoor unit and remote control 1. Wipe them with dry soft cloth. " Front panel 1. Open the front panel. •...
Page 173 Instruction SiENBE12-713 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 air purifying filter with photocatalytic deodorizing function.
Page 174 SiENBE12-713 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 175 Instruction SiENBE12-713 Care and cleaning FTK(X)S 50/60/71 F CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. UNITS " Indoor unit, Outdoor unit and Remote control 1. Wipe them with dry soft cloth. " Front panel 1.
Page 176 SiENBE12-713 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 air purifying filter with tabs (3 tabs at top) photocatalytic deodorizing function.
Page 177 Instruction SiENBE12-713 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 178 SiENBE12-713 Instruction FTXG 25/35 E, CTXG 50 E 2.1.15 Care and Cleaning CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. Always shut down the unit (and close the panel) before doing any work. Opening the panel during operation may cause the panel to fall off.
Page 179 Instruction SiENBE12-713 FILTERS 1. Open the front panel. • Open the front panel by placing a finger on the panel tab on either side of the front panel and the secure it using the supporting plate on the right. 2. Pull out the air filters. •...
Page 180 SiENBE12-713 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 181 Instruction SiENBE12-713 Care and Cleaning FDK(X)S 25/35 C CAUTION • Only a qualified service person is allowed to 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 182 • 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 183 Instruction SiENBE12-713 Care and Cleaning FDK(X)S 50/60 C, FDK(X)S 25/35 E CAUTION • Only a qualified service person is allowed to perform maintenance. • Before cleaning, be sure to stop the operation and turn the breaker OFF. " Cleaning the air filter 1.
Page 184 • 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 185 Instruction SiENBE12-713 Care and Cleaning FLK(X)S 25/35/50/60 B CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. UNITS " Indoor unit, Outdoor unit and Remote control 1.Wipe them with dry soft cloth. " Front panel 1.
Page 186 SiENBE12-713 Instruction FILTERS 1. Open the front grille. 2. Pull out the air filter. • Push upwards the tab at the center of each air filter, then pull it down. 3. Take off the air purifying filter, Photocatalytic deodorizing filter. •...
Page 187 Instruction SiENBE12-713 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 188 SiENBE12-713 Instruction 2.1.16 Troubleshooting 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 189 Instruction SiENBE12-713 Check again Please check again before calling a repair person. Case Check The air conditioner does not operate. • Hasn’t a breaker turned OFF or a fuse blown? (OPERATION lamp is off) • Isn’t it a power failure? •...
Page 190 SiENBE12-713 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 191 Instruction SiENBE12-713 Fault diagnosis. FAULT DIAGNOSIS BY REMOTE CONTROL In the ARC433 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 “00” indication flashes on the temperature display section.
Page 192: Fvxs Series
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 193 Instruction SiENBE12-713 • To avoid oxygen deficiency, ventilate the room sufficiently if equipment with burner is used together with the air conditioner. • Before cleaning, be sure to stop the operation, turn the breaker off or pull out the supply cord.
Page 194 SiENBE12-713 Instruction " Indoor Unit " Opening the front panel How to open the front panel: (page 26.) Air outlet selection switch • This setting blows air from upper outlet only. This setting automatically decides a blow • pattern depending on mode and conditions. •...
Page 195 Instruction SiENBE12-713 " Outdoor Unit 25/35 class 50 class " Indoor Unit 1. Titanium Apatite Photocatalytic Air- 11. Indoor Unit ON/OFF switch: Purifying Filter: • Push this switch once to start operation. • These filters are attached to the inside of Push once again to stop it.
Page 196 SiENBE12-713 Instruction " Remote control <Open the lid> 1. Signal transmitter: 10. SWING button: • It sends signals to the indoor unit. • Adjusting the Air Flow Direction (page 12.) 2. Display: 11. WEEKLY button: • It displays the current settings. (In this WEEKLY TIMER operation (page 19.) illustration, each section is shown with all 12.
Page 197 Instruction SiENBE12-713 2.2.3 Preparation Before Operation " To set the batteries 1. Slide the front cover to take it off. Position correctly! 2. Set two dry batteries (AAA). 3. Set the front cover as before. " To operate the remote control •...
Page 198 SiENBE12-713 Instruction Preparation Before Operation " To set the clock 1. Press “CLOCK button”. 0:00 is displayed. blinks. 2. Press “SELECT button” to set the current day of the week. 3. Press “CLOCK button”. blinks. 4. Press “SELECT button” to set the clock to the present time.
Page 199 Instruction SiENBE12-713 " Turn the breaker ON • Turning ON the breaker opens the flap, then closes it again. (This is a normal procedure.) NOTES " Tips for saving energy • Be careful not to cool (heat) the room too much.Keeping the temperature setting at a Recommended temperature setting moderate level helps save energy.
Page 200 SiENBE12-713 Instruction 2.2.4 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. " To start operation 1. Press “MODE selector button” and select a operation mode.
Page 201 Instruction SiENBE12-713 " To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode The air flow rate setting is not variable Five levels of air flow rate setting from “ “...
Page 202 SiENBE12-713 Instruction 2.2.5 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 ”. • “ ” The display on the LCD and the flaps will begin to swing.
Page 203: Air Flow Selection
Instruction SiENBE12-713 " 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 204 SiENBE12-713 Instruction 2.2.6 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 again with the settings which were used before POWERFUL operation.
Page 205 Instruction SiENBE12-713 2.2.7 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. " To start OUTDOOR UNIT QUIET operation 1.
Page 206 SiENBE12-713 Instruction 2.2.8 ECONO Operation ECONO operation is a function which enables efficient operation by lowering the maximum power consumption value. " To start ECONO operation 1. Press “ECONO button”. • “ ” is displayed on the LCD. " To cancel ECONO operation 2.
Page 207 Instruction SiENBE12-713 2.2.9 TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. " To use OFF TIMER operation •...
Page 208 SiENBE12-713 Instruction Preperation Before Operation " To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time.(page 8) 1. Press “ON TIMER button”. • 6:00 is displayed. • “ON” blinks. 2.
Page 209 Instruction SiENBE12-713 2.2.10 WEEKLY TIMER Operation Up to 4 timer settings can be saved each day of the week. " To use WEEKLY TIMER operation • Make sure the day of the week and time are set. If not, set the day of the week and time. (page 8.) •...
Page 210 SiENBE12-713 Instruction " To use WEEKLY TIMER operation 7. Press “NEXT button”. • The time will be set. • “ ” and the temperature blink. 8. Press “SELECT button” to select the desired temperature. • The temperature can be set between 10°C and 32°C.
Page 211 Instruction SiENBE12-713 " To cancel WEEKLY TIMER operation 11. Press “WEEKLY button” to deactivate the WEEKLY operation. • The “ ” will disappear from the display. • The TIMER lamp goes off. • To reactivate the WEEKLY TIMER operation, press the “WEEKLY button” again. NOTES "...
Page 212 SiENBE12-713 Instruction WEEKLY TIMER Operation " Confirm a reservation • The reservation can be confirmed. 1. Press “ button”. • The day of the week and the reservation number will be displayed. 2. Press “SELECT button” to select the desired day of the week and reservation number to be confirmed.
Page 213 Instruction SiENBE12-713 " Setting WEEKLY TIMER using copy mode • A reservation made once can be easily copied and the same settings used for another day of the week 1. Press “ button”. 2. Press “SELECT button” to confirm the day of the week to be copied.
Page 214 SiENBE12-713 Instruction 2.2.11 Note for Multi System <<What is a “Multi System”? >> This system has one outdoor unit connected to multiple indoor units. " Selecting the Operation Mode Outdoor 1. With the Priority Room Setting present but room unit inactive or not present When more than one indoor unit is operating, room...
Page 215 Instruction SiENBE12-713 " Priority Room Setting The Priority Room Setting requires initial programming during installation. Please consult your retailer or dealer for assistance. The room designated as the Priority Room takes priority in the following situations: 1. Operation Mode Priority As the operation mode of the Priority Room takes precedence, the user can select a different operation mode from other rooms.
Page 216 SiENBE12-713 Instruction 2.2.12 Care and cleaning CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. UNITS " Indoor unit, Outdoor unit and Remote control 1. Wipe them with dry soft cloth. " Front panel 1. Open the front panel. •...
Page 217 Instruction SiENBE12-713 FILTERS 1. Open the front panel. (page 26.) 2. Remove the air filters. • Press the claws on the right and left of the air filter down slightly, then pull upward. 3. Take off the Titanium Apatite Photocatalytic Air-Purifying Filter.
Page 218 SiENBE12-713 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 where you bought the air conditioner.
Page 219 Instruction SiENBE12-713 2.2.13 Troubleshooting 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 220 SiENBE12-713 Instruction Check again Please check again before calling a repair person. Case Check The air conditioner does not operate. • Hasn’t a breaker turned OFF or a fuse blown? (OPERATION lamp is off) • Isn’t it a power failure? •...
Page 221 Instruction SiENBE12-713 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 222 SiENBE12-713 Instruction Fault dignosis. FAULT DIAGNOSIS BY REMOTE CONTROL 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 “00” indication flashes on the temperature display section.
Page 223: Fhq Series
Instruction SiENBE12-713 FHQ Series 5 12 TEST AVAILABLE TEST System Configuration...
Page 224 (one remote control controls one indoor unit) standard control. Before initiating operation, contact your system. Confirm the following if your unit is of the following Daikin dealer for the operation that corresponds to your control sytem type. system.
Page 225 Instruction SiENBE12-713 For installation of separately sold component parts, 2. Safety considerations ask a specialist. Be sure to use the separately sold component parts We recommend that you read this instruction manual carefully designated by our company. before use to gain full advantage of the function of the air Incomplete installation performed by yourself may result in conditioner, and to avoid malfunction due to erroneous a failure, a water leakage, electric shock, and fire.
Page 226 SiENBE12-713 Instruction Do not install the air conditioner at any place where flammable gas may leak out. If the gas leaks out and stays around the air conditioner, a HEATING fire may break out. INDOOR OUTDOOR OUTDOOR UNIT Be sure to install an earth leakage breaker. TEMPERATURE TEMPERATURE Unless it is installed, an electric shock may result.
Page 227 Instruction SiENBE12-713 Regarding wiring DISPLAY “ ” “ ” “ ” “ ” “ ” • All wiring must be performed by an authorized (OPERATION MODE) electrician. This display shows the current OPERATION To do wiring, ask your dealer. Never do it by yourself. MODE.
Page 228 Refer to figure 1 on page [1] • Operating procedure varies with heat pump type and Regarding outside air temperature and heating capacity cooling only type. Contact your Daikin dealer to confirm • The heating capacity of the air conditioner declines as the your system type.
Page 229: Temperature Setting
B. Left and right direction A.UP AND DOWN DIRECTION. • The movable limit of the flap is changeable. Contact your Daikin dealer for details. Press the AIR FLOW DIRECTION ADJUST button System Configuration...
Page 230 SiENBE12-713 Instruction Program timer operation 7. Optimum operation Operate in the following order. Observe the following precautions to ensure the system • The timer is operated in the following two ways. operates. • Programming the stop time ( ) ... The system stops •...
Page 231 Instruction SiENBE12-713 How to clean the air filter 8. Maintenance Clean the air filter when the display shows “ ” (TIME TO (For service personnel) CLEAN AIR FILTER). Only a qualified service person is allowed to perform It will display that it will operate for a set amount of time. maintenance Increase the frequency of cleaning if the unit is installed in a room where the air is extremely contaminated.
Page 232 SiENBE12-713 Instruction How to clean air outlet and outside panels Turn on the main power supply switch • The display on the remote control will be shown when the • Clean with soft cloth. power is turned on. • When it is difficult to remove stains, use water or neutral •...
Page 233 It is necessary to clean the inside of the indoor • The outdoor unit is stopped. unit. Ask your Daikin dealer for details on cleaning the unit. This is because the room temperature has reached the set This operation requires a qualified service person.
Page 234 I. If one of the following malfunctions occurs, take the • If the air filter is clogged. measures shown below and contact your Daikin dealer. Ask a qualified service person to clean the air filters (Refer The system must be repaired by a qualified service person.
Page 235 Instruction SiENBE12-713 System Configuration...
Page 236: Part 6 Service Diagnosis
SiENBE12-713 Part 6 Service Diagnosis 1. Caution for Diagnosis................226 1.1 Troubleshooting with Operation Lamp ..........226 2. Problem Symptoms and Measures .............228 3. Service Check Function ..............229 3.1 Check Method 1 ...................229 3.2 Check Method 2 ...................231 4. Code Indication on the Remote Control ..........233 4.1 Error Codes and Description of Fault ...........233 5.
Page 237: Caution For Diagnosis
Caution for Diagnosis SiENBE12-713 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 238 SiENBE12-713 Caution for Diagnosis In case of FLK(X)S 25/35/50/60 B Series OPERATION lamp (green) (Q0341) 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 239: Problem Symptoms And Measures
Problem Symptoms and Measures SiENBE12-713 2. 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.
Page 240: Service Check Function
SiENBE12-713 Service Check Function 3. Service Check Function Check Method 1 The temperature display sections on the main unit indicate corresponding codes. ARC433 Series 1. When the timer cancel button is held down for 5 seconds, a “00” indication flashes on the temperature display section.
Page 241 Service Check Function SiENBE12-713 ARC452A Series 1. When the timer cancel button is held down for 5 seconds, a “00” indication flashes on the temperature display section. <Open the lid> TIMER CANCEL button It cancels the timer setting. < ARC452A2 > (R6757) 2.
Page 242: Check Method 2
SiENBE12-713 Service Check Function Check Method 2 1. Enter the diagnosis mode. s ,TEMP t , MODE) simultaneously. Press the 3 buttons (TEMP (R4272) The digit of the number of tens blinks. HTry again from the start when the digit does not blink. (R4273) 2.
Page 243 Service Check Function SiENBE12-713 5. Press the TEMP button. s or TEMP t and change the digit until you hear the sound of “beep”. Press TEMP (R4277) 6. Diagnose by the sound. H“pi” : The both numbers of tens and units do not accord with the error code. H“pi pi”...
Page 244: Code Indication On The Remote Control
SiENBE12-713 Code Indication on the Remote Control 4. Code Indication on the Remote Control Error Codes and Description of Fault Code Indication Description of Problem System Normal Insufficient gas Low-voltage detection or over-voltage detection Signal transmission error (between indoor and outdoor units) Signal transmission error (on outdoor unit PCB) Unspecified voltage (between indoor and outdoor units) Anti-icing function in other rooms...
Page 245: Troubleshooting
Troubleshooting SiENBE12-713 5. Troubleshooting Indoor Units - : Not used for troubleshooting ∗ : Varies depending on the cases. Indication on the Description of the Fault Details of fault remote control (Refer to the indicated page.) Indoor unit in normal condition (Conduct a diagnosis of the outdoor unit.) —...
Page 246: Outdoor Units
SiENBE12-713 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 247: Indoor Unit Pcb Abnormality
Troubleshooting SiENBE12-713 Indoor Unit PCB Abnormality Remote Control 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 " Faulty indoor unit PCB Supposed "...
Page 248: Freeze-Up Protection Control Or High Pressure Control
SiENBE12-713 Troubleshooting Freeze-up Protection Control or High Pressure Control Remote Control Display " High pressure control (heat pump model only) Method of 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 "...
Page 249 Troubleshooting SiENBE12-713 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.279 Is there any Provide sufficient air passage. short-circuit? Check the intake air filter. Is it very dirty? Clean the air filter.
Page 250: Fan Motor Or Related Abnormality
SiENBE12-713 Troubleshooting Fan Motor or Related Abnormality 5.5.1 AC Motor Remote Control Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine Malfunction abnormal fan motor operation. Detection Malfunction When the detected rotation speed does not reach the demanded rotation speed of the target Decision tap, and is less than 50% of the maximum fan motor rotation speed.
Page 251 Troubleshooting SiENBE12-713 5.5.2 DC Motor Remote Control Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine Malfunction abnormal fan motor operation. Detection Malfunction When the detected rotation speed does not reach the demanded rotation speed of the target tap, and is less than 50% of the maximum fan motor rotation speed.
Page 252 SiENBE12-713 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.276 and rotate fan by hand. Check No.02 Does fan rotate Replace fan motor.
Page 253: Thermistor Or Related Abnormality (Indoor Unit)
Troubleshooting SiENBE12-713 Thermistor or Related Abnormality (Indoor Unit) C4, C9 Remote Control 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 Decision operation∗.
Page 254: Front Panel Open / Close Fault
SiENBE12-713 Troubleshooting Front Panel Open / Close Fault Remote Control Display Method of Malfunction Detection " The system will be shut down when the error occurs twice. Malfunction Decision Conditions " Malfunction of the reduction motor Supposed " Malfunction or deterioration of the front panel mechanism Causes "...
Page 255: Signal Transmission Error (Between Indoor And Outdoor Unit)
Troubleshooting SiENBE12-713 Signal Transmission Error (between Indoor and Outdoor Unit) Remote Control Display Method of The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is Malfunction checked whether it is normal. Detection Malfunction When the data sent from the outdoor unit cannot be received normally, or when the content of Decision the data is abnormal.
Page 256 SiENBE12-713 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.10 Check the indoor unit-outdoor unit Refer to P.282 connection wires. Is there any wiring error? Correct the indoor unit-outdoor unit connection wires.
Page 257: Unspecified Voltage (Between Indoor And Outdoor Units)
Troubleshooting SiENBE12-713 Unspecified Voltage (between Indoor and Outdoor Units) Remote Control Display Method of The supply power is detected for its requirements (different from pair type and multi type) by the Malfunction indoor / outdoor transmission signal. Detection Malfunction The pair type and multi type are interconnected. Decision Conditions "...
Page 258: Freeze-Up Protection Control
SiENBE12-713 Troubleshooting 5.10 Freeze-up Protection Control Remote Control Display Outdoor Unit LED Display Method of Indoor unit icing, during cooling operation, is detected by checking the temperatures sensed by Malfunction the indoor unit heat exchanger thermistor and room temperature thermistor that are located in a shut-down room.
Page 259 Troubleshooting SiENBE12-713 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.277 Check the wiring and piping. Check No.06 Wiring or piping out of spec? Activate the wiring error Refer to P.279 check mode.
Page 260: Outdoor Unit Pcb Abnormality
SiENBE12-713 Troubleshooting 5.11 Outdoor Unit PCB Abnormality Remote Control Display Outdoor Unit LED Display " Detect within the programme of the microcomputer that the programme is in normal running Method of Malfunction order. Detection " When the programme of the microcomputer is in abnormal running order. Malfunction Decision Conditions...
Page 261: Ol Activation (Compressor Overload)
Troubleshooting SiENBE12-713 5.12 OL Activation (Compressor Overload) Remote Control Display Outdoor Unit LED Display Method of A compressor overload is detected through compressor OL. Malfunction Detection " If the compressor OL is activated twice, the system will be shut down. Malfunction "...
Page 262: Compressor Lock
SiENBE12-713 Troubleshooting 5.13 Compressor Lock Remote Control Display Outdoor Unit LED Display Method of A compressor lock is detected by checking the compressor running condition through the Malfunction position detection circuit. Detection " Judging from current waveform generated when high-frequency voltage is applied to the Malfunction Decision compressor.
Page 263: Dc Fan Lock
Troubleshooting SiENBE12-713 5.14 DC Fan Lock Remote Control 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 Malfunction the Hall IC. Detection " The fan does not start in 30 seconds even when the fan motor is running. Malfunction "...
Page 264: Input Over Current Detection
SiENBE12-713 Troubleshooting 5.15 Input Over Current Detection Remote Control Display Outdoor Unit LED Display Method of Malfunction is detected by checking the input current value. Malfunction Detection " The following condition continues for 2.5 seconds. Malfunction Input current ≥ 20A (typical value) Decision "...
Page 265 Troubleshooting SiENBE12-713 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. * An input over-current may result from wrong internal wiring. If the wires have been disconnected and Check No.07 reconnected for part replacement, for example, and the system is interrupted by an input over-current, Refer to P.280 take the following procedure.
Page 266: Discharge Pipe Temperature Control
SiENBE12-713 Troubleshooting 5.16 Discharge Pipe Temperature Control Remote Control Display Outdoor Unit LED Display Method of The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the Malfunction temperature being detected by the discharge pipe thermistor. Detection Malfunction 2YC45 Decision If the temperature being detected by the discharge pipe thermistor rises above 120°C, the...
Page 267: High Pressure Control In Cooling
Troubleshooting SiENBE12-713 5.17 High Pressure Control in Cooling Remote Control Display Outdoor Unit LED Display Method of High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the Malfunction temperature being sensed by the heat exchanger thermistor exceeds the limit. Detection "...
Page 268 SiENBE12-713 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.277 Check the installation space. Check No.06 Check No.07 Abnormal Installation condition Change the air outlet grille Refer to P.279 check position.
Page 269: Compressor Sensor System Abnormality
Troubleshooting SiENBE12-713 5.18 Compressor Sensor System Abnormality Remote Control Display Outdoor Unit LED Display " Fault condition is identified by the supply voltage and the DC voltage which is detected Method of Malfunction before the compressor startup. " Fault condition is identified by compressor current which is detected right after the Detection compressor startup.
Page 270 SiENBE12-713 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn off the power Reactor connection check Connection OK? Connect properly. Compressor connection check Connection OK? Connect properly. Disconnect the reactor from the outdoor Reactor check unit PCB and measure the resistance...
Page 271: Position Sensor Abnormality
Troubleshooting SiENBE12-713 5.19 Position Sensor Abnormality Remote Control Display Outdoor Unit LED Display Method of A compressor startup failure is detected by checking the compressor running condition through Malfunction the position detection circuit. Detection " The compressor fails to start in about 15 seconds after the compressor run command signal Malfunction Decision is sent.
Page 272: Ct Or Related Abnormality
SiENBE12-713 Troubleshooting 5.20 CT or Related Abnormality Remote Control Display Outdoor Unit LED Display Method of A CT or related error is detected by checking the compressor running frequency and CT- Malfunction detected input current. Detection " The compressor running frequency is below 55 Hz and the CT input is below 0.1 V. Malfunction Decision (The input current is also below 0.5 A.)
Page 273 Troubleshooting SiENBE12-713 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.283 again. Get the system started. ∗...
Page 274: Thermistor Or Related Abnormality (Outdoor Unit)
SiENBE12-713 Troubleshooting 5.21 Thermistor or Related Abnormality (Outdoor Unit) P4, J3, J6, J8, J9, H9 Remote Control Display Outdoor Unit LED Display Method of This type of error is detected by checking the thermistor input voltage to the microcomputer. Malfunction [A thermistor error is detected by checking the temperature being detected by each thermistor.] Detection Malfunction...
Page 275: Sienbe12
Troubleshooting SiENBE12-713 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.279 Error displayed again Reconnect. on remote control? Connector or thermistor Reconnect.
Page 276: Electrical Box Temperature Rise
SiENBE12-713 Troubleshooting 5.22 Electrical Box Temperature Rise Remote Control Display Outdoor Unit LED Display Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor off. Detection " With the compressor off, the radiation fin temperature is above 100°C. Malfunction "...
Page 277 Troubleshooting SiENBE12-713 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.07 WARNING Turn off the power and turn it on Refer to P.280 again. To cool down the electricals, the outdoor unit fan gets started when the radiation fin temperature rises above 100˚C and stops itself...
Page 278: Radiation Fin Temperature Rise
SiENBE12-713 Troubleshooting 5.23 Radiation Fin Temperature Rise Remote Control Display Outdoor Unit LED Display Method of A radiation fin temperature rise is detected by checking the radiation fin temperature being Malfunction detected by the fin thermistor with the compressor on. Detection "...
Page 279 Troubleshooting SiENBE12-713 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.07 Turn off the power and turn it on Refer to P.280 again to get the system started. Check No.09 Refer to P.281 Error displayed again?
Page 280: Output Over Current Detection
SiENBE12-713 Troubleshooting 5.24 Output Over Current Detection Remote Control 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 " A position signal error occurs while the compressor is running. Malfunction "...
Page 281 Troubleshooting SiENBE12-713 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.280 reconnected for part replacement, for example, and the system is interrupted by an output over-current, take the following procedure.
Page 282: Insufficient Gas
SiENBE12-713 Troubleshooting 5.25 Insufficient Gas Remote Control Display Outdoor Unit LED Display Method of Gas shortage detection I: Malfunction Gas shortage is detected by checking the input current value and the compressor running 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 283 Troubleshooting SiENBE12-713 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.277 Any thermistor Reconnect in position. disconnected? * Discharge pipe thermistor * Indoor / outdoor unit heat exchanger thermistor * Room temperature thermistor Check No.06 * Outdoor air thermistor...
Page 284: Low-Voltage Detection Or Over-Voltage Detection
SiENBE12-713 Troubleshooting 5.26 Low-voltage Detection or Over-voltage Detection Remote Control Display Outdoor Unit LED Display Method of An abnormal voltage rise or drop is detected by checking the detection circuit or DC voltage Malfunction detection circuit. Detection " An over-voltage signal is fed from the over-voltage detection circuit to the microcomputer, or Malfunction Decision the voltage being detected by the DC voltage detection circuit is judged to be below 150 V...
Page 285: Signal Transmission Error (On Outdoor Unit Pcb)
Troubleshooting SiENBE12-713 5.27 Signal Transmission Error (on Outdoor Unit PCB) Remote Control Display Outdoor Unit LED Display Method of Communication error between microcomputer mounted on the main PCB and PM1. Malfunction Detection " When the data sent from the PM1 can not be received successively for 9 sec. Malfunction "...
Page 286: Anti-Icing Function In Other Rooms / Unspecified Voltage
SiENBE12-713 Troubleshooting 5.28 Anti-icing Function in Other Rooms / Unspecified Voltage (between Indoor and Outdoor Units) UA, UH Remote Control 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 287: Check
Check SiENBE12-713 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 288: Electronic Expansion Valve Check
SiENBE12-713 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 289: Four Way Valve Performance Check
Check SiENBE12-713 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 220-240 V with Replace the outdoor unit compressor on? PCB.
Page 290 SiENBE12-713 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 291: Installation Condition Check
Check SiENBE12-713 6.1.6 Installation Condition Check Check No.07 Installation condition check Check the allowable Abnormal dimensions of the air suction Change the position of the air and discharge discharge grille or the 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 292: Discharge Pressure Check
SiENBE12-713 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 293: Power Supply Waveforms Check
Check SiENBE12-713 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). "...
Page 294: Capacitor Voltage Check
SiENBE12-713 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 295: Main Circuit Electrolytic Capacitor Check
Check SiENBE12-713 6.1.13 Main Circuit Electrolytic Capacitor Check " Checking the main circuit electrolytic capacitor Check No.14 ! 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 296: Hall Ic Check
SiENBE12-713 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) &...
Page 297 Check SiENBE12-713 Service Diagnosis...
Page 298: Part 7 Removal Procedure
SiENBE12-713 Part 7 Removal Procedure 1. Outdoor Unit..................288 1.1 Removal of the Panels and Plates ............288 1.2 Removal of the Electrical Box ..............292 1.3 Removal of the PCB................300 1.4 Removal of the Propeller Fan / Fan Motor ...........306 1.5 Removal of the Sound Blanket.............308 1.6 Removal of Electronic Expansion Valve Coil, Four Way Valve Coil and Thermistor ...........312 1.7 Removal of the Distributor..............315...
Page 299: Outdoor Unit
Outdoor Unit SiENBE12-713 1. Outdoor Unit Removal of the Panels and Plates Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points " Take care not to cut your External appearance.
Page 300 SiENBE12-713 Outdoor Unit Procedure Points Step Loosen the 6 screws of the front panel. Loosen the 2 screws Clamp plate (each 1 in front and back) of the clamp plate. Slide the clamp plate to the left to undo the hooks and remove the plate.
Page 301 Outdoor Unit SiENBE12-713 Procedure Points Step Lift the front panel up to remove the left side hooks and open the panel. The front panel has the 3 hooks on the left. Hooks The front panel has the 1 hook on the right. Hook Removal Procedure...
Page 302 SiENBE12-713 Outdoor Unit Procedure Points Step Loosen the 4 screws of the discharge grille. Loosen the 2 screws of the stop valve cover. And then slide the Stop valve cover cover downward to remove. " When assembling, make sure to catch the 5 hooks. Removal Procedure...
Page 303: Removal Of The Electrical Box
Outdoor Unit SiENBE12-713 Removal of the Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points ' Illustrations are for 3 room 1. Disconnect the connecting wires model.
Page 304 SiENBE12-713 Outdoor Unit Procedure Points Step 2. Disconnect the each harnesses Detach the fixing tape for the electrical box (cover). Undo the 4 hooks at the mark of the drip proof cover. Lift the cover up to remove. " The shape of [S70] wire is Disconnect the connector for fan motor different depending on the...
Page 305 Outdoor Unit SiENBE12-713 Procedure Points Step The figure shows the arrangement of the wire harness for fan motor. " The number of the Disconnect the connectors for connectors are different electronic expansion according to the number of valve coil. the connected indoor units. [S20] - White [S21] - Red [S22] - Blue...
Page 306 SiENBE12-713 Outdoor Unit Procedure Points Step Disconnect the connector for overload protector [S40]. Remove the OL wire harness and the compressor wire harness together from the partition plate. Clamp " Detach the clamp. 10 Use long-nose pliers or " Just pull the push-mount the like to pull out the clamp.
Page 307 Outdoor Unit SiENBE12-713 Procedure Points Step Disconnect the each connector. [S90] : Outdoor air, heat exchanger, discharge pipe thermistor [S92] : Gas pipe thermistor [S93] : Liquid pipe thermistor Disconnect the connector for four way valve [S80]. Removal Procedure...
Page 308 SiENBE12-713 Outdoor Unit Procedure Points Step The figure shows the arrangement of the wire harness under the electrical box. Undo the wire clip for the thermistor lead wire. 3. Remove the electrical box Service PCB Loosen the 2 screws of Power supply terminal board the earth terminal.
Page 309 Outdoor Unit SiENBE12-713 Procedure Points Step Wiring fixture Detach the outdoor air thermistor. Loosen the screw on the right side of the electrical box. Removal Procedure...
Page 310 SiENBE12-713 Outdoor Unit Procedure Points Step Loosen the 1 screw in front of the electrical box. Lift up the electrical box to remove. Removal Procedure...
Page 311: Removal Of The Pcb
Outdoor Unit SiENBE12-713 Removal of the PCB Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the service PCB Illustrations are for 3 room model. External appearance of the service PCB and the terminal board.
Page 312 SiENBE12-713 Outdoor Unit Procedure Points Step Widen the upper hook and pull the service PCB upward to remove. 2. Remove the control PCB Disconnect the each connectors on the terminal board. Disconnect the 2 connectors for reactor. Loosen the 3 screws of the PCB.
Page 313 Outdoor Unit SiENBE12-713 Procedure Points Step Undo the 3 hooks on the reactor side and slide the control PCB. Undo the relay harness for compressor from the hook. " In working, be careful not to Lift up the control PCB to remove.
Page 314 SiENBE12-713 Outdoor Unit Procedure Points Step " See page 56 for detail. Names of parts on the control PCB. Fuse (FU3) 3.15A 250V (S70) (S40) (S20) (S21) (S22) (S80) (S101) (S15) (S10) Fuse (FU1) (S51) Fuse (FU2) 30A 250V 3.15A 250V Loosen the 2 screws of the radiation fin.
Page 315 Outdoor Unit SiENBE12-713 Procedure Points Step 3. Disconnect the wire harnesses 4. Remove the terminal Illustrations are for 3 room board model. Open the electrical box and remove the terminal board. Removal Procedure...
Page 316 SiENBE12-713 Outdoor Unit Procedure Points Step Removal Procedure...
Page 317: Removal Of The Propeller Fan / Fan Motor
Outdoor Unit SiENBE12-713 Removal of the Propeller Fan / 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 fixing plate.
Page 318 SiENBE12-713 Outdoor Unit Procedure Points Step Undo the 2 fixing hooks of the lead wire. Loosen the 4 screws of the fan motor. Lead wire Propeller fan (R3249) " When assembling, put the lead wire through the back of the motor. (so as not to be entangled with the propeller fan) Detach the 4 screws...
Page 319: Removal Of The Sound Blanket
Outdoor Unit SiENBE12-713 Removal of the Sound Blanket Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points " Remove the outer panels 1. Remove the right side panel and plates.
Page 320 SiENBE12-713 Outdoor Unit Procedure Points Step Pull up the right side panel. Loosen the 2 screws of the wiring fixture. Wiring fixture 2. Remove the partition plate Loosen the 2 screws to remove the partition plate. Detach the clamp of the relay harness for the compressor.
Page 321 Outdoor Unit SiENBE12-713 Procedure Points Step Pull up the partition plate. " When assembling, make sure to catch the lower hook of the partition plate. " Illustrations are different 3. Remove the sound blanket depending on the models. Lift up the sound blanket (top-upper) to remove.
Page 322 SiENBE12-713 Outdoor Unit Procedure Points Step Undo the fixing strings, open the sound blanket (body) and pull it out. Open the sound blanket (inner) and pull it out. Sound blanket (inner) Removal Procedure...
Page 323: Removal Of Electronic Expansion Valve Coil, Four Way Valve Coil And Thermistor
Outdoor Unit SiENBE12-713 Removal of Electronic Expansion Valve Coil, Four Way Valve Coil and Thermistor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the electronic Illustrations are for 3 room expansion valve coil model.
Page 324 SiENBE12-713 Outdoor Unit Procedure Points Step " Meet the edge of the 3. Remove the liquid/gas pipe thermistor thermistor and clip. Open the putty and " The number of ports is remove the liquid pipe different according to the thermistor. models.
Page 325 Outdoor Unit SiENBE12-713 Procedure Points Step " Meet the edge of the 5. Remove the discharge pipe thermistor thermistor and clip. Clip Undo the clip and " Be careful not to loose the remove the discharge clip for the discharge pipe pipe thermistor.
Page 326: Removal Of The Distributor
SiENBE12-713 Outdoor Unit Removal of the Distributor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the putty. Warning Ventilate when refrigerant leaks during the work. (If refrigerant contacts fire, it will cause to arise toxic gas.) Caution...
Page 327: Removal Of The Four Way Valve
Outdoor Unit SiENBE12-713 Removal of the Four Way Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points " Be sure to apply nitrogen Cautions for restoration replacement when 1.
Page 328: Removal Of The Compressor
SiENBE12-713 Outdoor Unit Removal of the Compressor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the terminal Make a note. " Be careful so as not to burn cover the compressor terminals or Remove the terminal...
Page 329 Outdoor Unit SiENBE12-713 Procedure Points Step Remove the 2 sheets of putty. Warning Ventilate when refrigerant leaks during the work. (If refrigerant contacts fire, it will cause to arise toxic gas.) There is one nut fixing the compressor. Remove the nut with an open-end spanner.
Page 330 SiENBE12-713 Part 8 Others 1. Others ....................320 1.1 Test Run from the Remote Control ............320 1.2 Jumper Settings ...................321 Others...
Page 331: Part 8 Others
Others SiENBE12-713 1. Others Test Run from the Remote Control 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. "...
Page 332: Jumper Settings
SiENBE12-713 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 infrared remote controls can be set for different addresses. How to set the different addresses " Control PCB of the indoor unit (1) Remove the electrical box.
Page 333 Others SiENBE12-713 1.2.3 Adjusting the Angle of the Intelligent Eye Sensor FTK(X)S20-35C " 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) "...
Page 334: Part 9 Appendix
SiENBE12-713 Part 9 Appendix 1. Piping Diagrams..................324 1.1 Indoor Units ..................324 1.2 Outdoor Units ..................330 2. Wiring Diagrams..................331 2.1 Indoor Units ..................331 2.2 Outdoor Units ..................336 Appendix...
Page 335: Piping Diagrams
Piping Diagrams SiENBE12-713 1. Piping Diagrams Indoor Units 1.1.1 Wall Mounted Type FTKS20D3VMW(L), FTKS25D3VMW(L), FTKS50D2V1W(L) FTKS35D3VMW(L) INDOOR UNIT MAFFLER ASSY HEAT EXCHANGER INDOOR UNIT 7.0CuT MAFFLER ASSY HEAT EXCHANGER 6.4CuT 7.0CuT 6.4CuT THERMISTOR 6.4CuT ON HEAT EXCH. 6.4CuT THERMISTOR 6.4CuT ON HEAT EXCH.
Page 336 SiENBE12-713 Piping Diagrams FTKS71FV1B FTXG25EV1BW(S), FTXG35EV1BW(S) INDOOR UNIT INDOOR UNIT HEAT EXCHANGER 7.0CuT ( 7.9CuT ) 7.0CuT THERMISTOR 7.0CuT ON HEAT EXCH. HEAT EXCHANGER 7.0CuT THERMISTOR ON HEAT EXCH. CROSS FLOW FAN FIELD PIPING CROSS FLOW FAN (6.4CuT) FIELD PIPING ( 6.4CuT ) FAN MOTOR FAN MOTOR...
Page 337 Piping Diagrams SiENBE12-713 FTXS50D2V1W(L) FTXS20CAVMB, FTXS25CAVMB, FTXS35CAVMB INDOOR UNIT INDOOR UNIT MAFFLER ASSY HEAT EXCHANGER 7.0CuT HEAT EXCHANGER 7.0CuT 6.4CuT 6.4CuT THERMISTOR 6.4CuT ON HEAT EXCH. THERMISTOR 6.4CuT 6.4CuT ON HEAT EXCH. 6.4CuT CROSS FLOW FAN FIELD PIPING CROSS FLOW FAN ( 6.4CuT ) FIELD PIPING (6.4CuT)
Page 338 SiENBE12-713 Piping Diagrams 1.1.2 Duct Connected Type FDKS25CAVMB, FDKS35CAVMB, FDKS50CVMB, FDKS60CVMB, FDKS25EAVMB, FDKS35EAVMB FDXS25CAVMB, FDXS35CAVMB, FDXS50CVMB, FDXS60CVMB, FDXS25EAVMB, FDXS35EAVMB INDOOR UNIT ( 6.4CuT ) HEAT EXCHANGER THERMISTOR FIELD PIPING ON HEAT ( 6.4CuT ) SIROCCO FAN EXCH. FAN MOTOR FIELD PIPING CuT ) CuT ) REFRIGERANT FLOW...
Page 339 Piping Diagrams SiENBE12-713 FLXS25BAVMB, FLXS35BAVMB FLXS50BAVMB, FLXS60BAVMB INDOOR UNIT INDOOR UNIT ( 6.4CuT ) ( 9.5CuT ) HEAT EXCHANGER HEAT EXCHANGER THERMISTOR THERMISTOR FIELD PIPING ON HEAT FIELD PIPING ON HEAT ( 6.4CuT ) EXCH. ( 6.4CuT ) EXCH. SIROCCO FAN SIROCCO FAN FAN MOTOR FAN MOTOR...
Page 340 SiENBE12-713 Piping Diagrams 1.1.5 Ceiling Suspended Type FHQ35/50/60BVV1B Indoor heat exchanger φ Field piping C1220T-0 φ Field piping C1220T-0 Outdoor unit Indoor unit MODEL FHQ35BUV1B FHQ35BVV1B FCQ35BVE FCQ35C7VEB FHQ50, 60BUV1B FHQ50, 60BVV1B FCQ50, 60BVE 12.7 FBQ60BV1 FBQ60BVL FCQ50, 60C7VEB FUQ71, 100, 125BUV1B FUQ71, 100, 125BVV1B FHQ71, 100, 125BUV1B FHQ71, 100, 125BVV1B...
Page 341: Outdoor Units
Piping Diagrams SiENBE12-713 Outdoor Units 1.2.1 Cooling Only 4MKS75F2V1B OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPARATURE THERMISTOR ( DOA ) MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR ( DLA ) HEADER 6.4CuT ROOM A 9.5CuT ( 6.4 CuT ) FILTER MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR ( DLB ) 6.4CuT...
Page 342: Wiring Diagrams
SiENBE12-713 Wiring Diagrams 2. Wiring Diagrams Indoor Units 2.1.1 Wall Mounted Type FTKS20D3VMW(L), FTKS25D3VMW(L), FTKS35D3VMW(L) FTXS20D3VMW(L), FTXS25D3VMW(L), FTXS35D3VMW(L) FIELD WIRING. PCB3 PCB1 RECTIFIER LED1 3.15A OUTDOOR LED2 CAUTION LED3 TRANSMISSION NOTE THAT OPERATION WILL CIRCUIT RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN.
Page 343 Wiring Diagrams SiENBE12-713 FTKS20CAVMB, FTKS25CAVMB, FTKS35CAVMB FTXS20CAVMB, FTXS25CAVMB, FTXS35CAVMB PCB3 S36 S35 PCB1 ® INTELLIGENT EYE SENSOR 3.15A outdoor TERMINAL FOR PCB2 CENTRALIZED CONTROL FIELD WIRING. TRANSMISSION LED1 LED2 LED3 CIRCUIT CAUTION NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS SIGNAL TURNED OFF AND THEN BACK t°...
Page 344 SiENBE12-713 Wiring Diagrams FTXG25EV1BW(S), FTXG35EV1BW(S), CTXG50EV1BW(S) PCB2 LED4 LED3 LED2 SIGNAL RECEIVER GRN / YLW INFRARED FIELD WIRING. t° GRN / YLW REMOTE CONTROL PCB3 PCB1 TRANSMISSION CIRCUIT outdoor INTELLIGENT EYE SENSOR CAUTION NOTE THAT OPERATION WILL 3.15A RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS RECTIFIER TURNED OFF AND THEN BACK...
Page 345 Wiring Diagrams SiENBE12-713 2.1.3 Floor / Ceiling Suspended Dual Type FLKS25BAVMB, FLKS35BAVMB, FLKS50BAVMB, FLKS60BAVMB FLXS25BAVMB, FLXS35BAVMB, FLXS50BAVMB, FLXS60BAVMB PCB3 PCB1 PCB2 3.15A ® outdoor FIELD WIRING. / YLW PCB4 TRANSMISSION CIRCUIT CAUTION NOTE THAT OPERATION WILL SIGNAL RESTART AUTOMATICALLY IF RECEIVER THE MAIN POWER SUPPLY IS indoor...
Page 346 SiENBE12-713 Wiring Diagrams 2.1.5 Ceiling Suspended Type FHQ35/50/60BVV1B PRINTED CIRCUIT BOARD PUSH BUTTON(ON/OFF) CAPACITOR(M1F) :CONNECTER DISCRIMINATION COLOUR FOR COMPONENTS. LIGHT EMITTING DIODE FUSE(F5A 250V) (ON-RED) :CONNECTER COLOUR FOR COMPONENTS. LIGHT EMITTING DIODE t° LIGHT EMITTING DIODE :CONNECTER COLOUR FOR PRINTED CIRCUIT BOARD. (SERVICE MONITOR GREEN) (TIMER-GREEN) IN CASE OF SIMULTANEOUS...
Page 347: Outdoor Units
Wiring Diagrams SiENBE12-713 Outdoor Units 2.2.1 Cooling Only 4MKS75F2V1B MRM20 3.15A POWER SUPPLY V100 MRM10 6(P) 7(N) TO INDOOR UNIT X11A ROOM B 3.15A ROOM A MRC/W PCB1 ROOM C S101 t° t° t° t° t° t° t° t° t° t°...
Page 348: Index
SiENBE12-713 Index Numerics check No.04 ............277 check No.05 ............278 3 minutes stand-by..........86 check No.06 ............279 check No.07 ............280 check No.08 ............281 A1................236 check No.09 ............281 A5..............237, 247 check No.10 ............282 A6..............239, 240 check No.11 ............282 AC1 .................56 check No.12 ............
Page 349 SiENBE12-713 C4 ..............242 front panel control ..........64 C7 ..............243 front panel mechanism ........45, 243 C9 ..............242 front panel open/close fault ........243 E1 ..............249 FU1 ......38, 40, 43, 45, 47, 49, 52, 56 E5 ..............250 FU2 ................ 56 E6 ..............251 FU3 ................
Page 350 SiENBE12-713 L5 ................269 printed circuit board (PCB) LED A......38, 40, 43, 45, 47, 49, 52, 56 buzzer PCB............44 LED1 ........38, 40, 43, 47, 49, 52, 56 ceiling suspended type ........55 LED2 ......38, 40, 43, 45, 47, 49, 52, 56 control PCB..........
Page 351 SiENBE12-713 S38................43 top panel .............. 288 S40..............56, 295 troubleshooting............. 177 S41..............45, 52 indoor units ............ 234 S42................52 outdoor units ..........235 S46..............45, 52 troubleshooting with the LED indication ....227 S47..............45, 52 troubleshooting with the operation lamp ....226 S48................52 turning speed pulse input on the outdoor unit PCB S49..............45, 52 check.............
Page 352 SiENBE12-713 Drawings & Flow Charts fan motor or related abnormality ac motor ............239 anti-icing function in other rooms ......275 DC motor ............240 automatic air flow control ........65 four way valve performance check ...... 278 automatic operation ..........67 freeze-up protection control ....89, 237, 247 auto-swing ..............62 frequency control ...........
Page 353 .........260 FLXS60BAVMB ..........334 power supply PCB ..........50 FTKS20CAVMB ..........332 power supply waveforms check ......282 FTKS20D3VMW(L) ........331 power transistor check .........283 FTKS25CAVMB ..........332 priority room setting ..........100 FTKS25D3VMW(L) ........331 Drawings & Flow Charts...
Page 354 SiENBE12-713 FTKS35CAVMB ..........332 FTKS35D3VMW(L) ........331 FTKS50D2V1W(L) .........331 FTKS50FV1B ..........332 FTKS60FV1B ..........332 FTKS71FV1B ..........332 FTXG25EV1BW(S) ........333 FTXG35EV1BW(S) ........333 FTXS20CAVMB ..........332 FTXS20D3VMW(L) ........331 FTXS25CAVMB ..........332 FTXS25D3VMW(L) ........331 FTXS35CAVMB ..........332 FTXS35D3VMW(L) ........331 FTXS50D2V1W(L) .........331 FTXS50FV1B ..........332 FTXS60FV1B ..........332 FTXS71FV1B ..........332 FVXS25FV1B ..........334 FVXS35FV1B ..........334 FVXS50FV1B ..........334 wiring-error check ...........98 Drawings &...
Page 355 Management System in accordance with the ISO9001 not constitute an offer binding upon Daikin Europe N.V.. Daikin Europe refrigerants has led to its close involvement in standard. ISO9001 pertains to quality assurance regarding N.V. has compiled the content of this publication to the best of its environmental issues.

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Daikin FTKS20D3VMW Service Manual

Part 1 List of Functions

Part 2 Specifications

Part 3 Printed Circuit Board Connector Wiring Diagram

Part 4 Function and Control

Part 5 Operation Manual

Part 6 Service Diagnosis

Part 7 Removal Procedure

Part 8 Others

Part 9 Appendix

Index

Quick Links

Troubleshooting

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Table of Contents