Daikin F-Series Service Manual
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Daikin F-Series Service Manual

Inverter multi for 2 rooms
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See also: Service Manual , Technical Manual
SiBE12 - 712
Inverter Multi for 2 Rooms
F-Series
[Applied Models]
Inverter Multi : Cooling Only
Inverter Multi : Heat Pump

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Summary of Contents for Daikin F-Series

  • Page 1 SiBE12 - 712 Inverter Multi for 2 Rooms F-Series [Applied Models] Inverter Multi : Cooling Only Inverter Multi : Heat Pump...
  • Page 2 SiBE12-712 Inverter Multi for 2 Rooms F-Series Cooling Only Outdoor Unit Indoor Unit 2MKS40FV1B FTKS20D3VMW(L) FDKS25CAVMB FTKS25D3VMW(L) FDKS35CAVMB FTKS35D3VMW(L) FDKS25EAVMB FTKS20CAVMB FDKS35EAVMB FTKS25CAVMB FLKS25BAVMB FTKS35CAVMB FLKS35BAVMB FVXS25FV1B FVXS35FV1B 2AMK40FV1B ATKS20E2V1B ATKS20DAVMB ATKS25E2V1B ATKS25DAVMB ATKS35E2V1B ATKS35DAVMB Heat Pump Outdoor Unit Indoor Unit...

  • Page 3: Table Of Contents

    SiBE12-712 1. Introduction .....................v 1.1 Safety Cautions ..................v 1.2 Used Icons ....................ix Part 1 List of Functions ..............1 1. Cooling Only....................2 2. Heat Pump ....................8 Part 2 Specifications ..............15 1. Cooling Only..................16 1.1 Indoor Units ....................16 1.2 Outdoor Units ..................24 2.
  • Page 4 SiBE12-712 2.9 Liquid Compression Protection Function 2..........83 2.10 Defrost Control ..................84 2.11 Electronic Expansion Valve Control ............85 2.12 Malfunctions ...................89 2.13 Forced Operation Mode .................90 2.14 Additional Function.................91 Part 5 Operation Manual ............. 93 1. System Configuration................94 1.1 Operation Instructions ................94 2.
  • Page 5 SiBE12-712 Part 7 Others ................247 1. Others ....................248 1.1 Test Run from the Remote Controller ..........248 1.2 Jumper Settings ...................249 Part 8 Appendix................. 251 1. Piping Diagrams..................252 1.1 Indoor Units ..................252 1.2 Outdoor Units ..................256 2. Wiring Diagrams..................257 2.1 Indoor Units ..................257 2.2 Outdoor Units ..................261 Index .....................

  • Page 6: Introduction

    SiBE12-712 Introduction 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ Warning” Warnings items are especially important since they can lead to death or serious injury if they are not followed closely.
  • Page 7 Introduction SiBE12-712 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 SiBE12-712 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 SiBE12-712 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

    SiBE12-712 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 SiBE12-712...

  • Page 12: Part 1 List Of Functions

    SiBE12-712 Part 1 List of Functions 1. Cooling Only....................2 2. Heat Pump ....................8 List of Functions...

  • Page 13: Cooling Only

    Cooling Only SiBE12-712 1. Cooling Only 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 14 SiBE12-712 Cooling Only 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 15 Cooling Only SiBE12-712 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 16 SiBE12-712 Cooling Only 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 17 Cooling Only SiBE12-712 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 18 SiBE12-712 Cooling Only 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 19: Heat Pump

    Heat Pump SiBE12-712 2. Heat Pump 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 20 SiBE12-712 Heat Pump 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 Heat Pump SiBE12-712 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 22 SiBE12-712 Heat Pump Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — Function Clean Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — –10 Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 23 Heat Pump SiBE12-712 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 — Air Purifying Filter with Photocatalytic PAM Control —...
  • Page 24 SiBE12-712 Heat Pump 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 25 Heat Pump SiBE12-712 Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — Function Clean Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — Operation Limit for Heating (°CWB) –10 Air Purifying Filter with Photocatalytic Deodorizing Function —...

  • Page 26: Part 2 Specifications

    SiBE12-712 Part 2 Specifications 1. Cooling Only..................16 1.1 Indoor Units ....................16 1.2 Outdoor Units ..................24 2. Heat Pump ....................26 2.1 Indoor Units ....................26 2.2 Outdoor Units ..................36 Specifications...

  • Page 27: Cooling Only

    Cooling Only SiBE12-712 1. Cooling Only Indoor Units 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) 4.7 (166)
  • Page 28 SiBE12-712 Cooling Only 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 29 Cooling Only SiBE12-712 50Hz 230V Model FTKS35CAVMB Rated Capacity 3.5kW Class Front Panel Color White 7.7 (272) 6.0 (212) m³/min Air Flow Rates (cfm) 4.4 (155) 3.8 (134) Type Cross Flow Fan Motor Output Speed Steps 5 Steps, Quiet, Auto Air Direction Control Right, Left, Horizontal, Downward Air Filter...
  • Page 30 SiBE12-712 Cooling Only 50Hz 230V Model ATKS20E2V1B ATKS25E2V1B Rated Capacity 2.0kW Class 2.5kW Class Front Panel Color White White 8.7 (307) 8.7 (307) 6.7 (237) 6.7 (237) m³/min Air Flow Rates (cfm) 4.7 (166) 4.7 (166) 3.9 (138) 3.9 (138) Type Cross Flow Fan Cross Flow Fan...
  • Page 31 Cooling Only SiBE12-712 50Hz 230V Model ATKS25DAVMB ATKS35DAVMB Rated Capacity 2.5kW Class 3.5kW Class Front Panel Color White White 7.7 (272) 7.7 (272) 5.9 (208) 6.0 (212) m³/min Air Flow Rates (cfm) 4.2 (148) 4.4 (155) 3.6 (127) 3.8 (134) Type Cross Flow Fan Cross Flow Fan...
  • Page 32 SiBE12-712 Cooling Only 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 33 Cooling Only SiBE12-712 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)
  • Page 34 SiBE12-712 Cooling Only Floor Standing Type 50Hz 220-230-240V FVXS25FV1B FVXS35FV1B Model Cooling Cooling 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...

  • Page 35: Outdoor Units

    Cooling Only SiBE12-712 Outdoor Units 50Hz 220-230-240V Model 2MKS40FV1B Cooling Capacity — Power Consumption — Running Current — Casing Color Ivory White Type Hermetically Sealed Swing Type Compressor Model 1YC23ABXD Motor Output Model FVC50K Refrigerant Charge 0.45 Type R-410A Refrigerant Charge 1.20 m³/min...
  • Page 36 SiBE12-712 Cooling Only 50Hz 220-230-240V Model 2AMK40FV1B — Cooling Capacity — Power Consumption — Running Current Casing Color Ivory White Type Hermetically Sealed Swing Type Compressor Model 1YC23ABXD Motor Output Model FVC50K Refrigerant Oil Charge 0.45 Type R-410A Refrigerant Charge 1.20 m³/min Air Flow Rates...

  • Page 37: Heat Pump

    Heat Pump SiBE12-712 2. Heat Pump Indoor Units 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 38 SiBE12-712 Heat Pump 50Hz 230V FTXS20D3VMW FTXS20D3VML Model Cooling Heating Cooling Heating Rated Capacity 2.0kW Class 2.0kW Class Front Panel Color White Silver Line 8.7 (307) 9.4 (332) 8.7 (307) 9.4 (332) 6.7 (237) 7.6 (268) 6.7 (237) 7.6 (268) m³/min Air Flow Rates (cfm)
  • Page 39 Heat Pump SiBE12-712 50Hz 230V FTXS35D3VMW FTXS35D3VML Model Cooling Heating Cooling Heating Rated Capacity 3.5kW Class 3.5kW Class Front Panel Color White Silver Line 8.9 (314) 9.7 (342) 8.9 (314) 9.7 (342) 6.9 (244) 7.9 (279) 6.9 (244) 7.9 (279) m³/min Air Flow Rates (cfm)
  • Page 40 SiBE12-712 Heat Pump 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 41 Heat Pump SiBE12-712 50Hz 230V ATXG25EV1B ATXG35EV1B Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class Front Panel Color Mat Crystal White Mat Crystal White 7.7 (271) 9.0 (317) 8.1 (285) 9.6 (338) 6.1 (215) 7.9 (278) 6.5 (229) 8.2 (289) m³/min Air Flow Rates...
  • Page 42 SiBE12-712 Heat Pump 50Hz 230V ATXS35E2V1B Model Cooling Heating Rated Capacity 3.5kW Class Front Panel Color White 8.9 (314) 9.7 (342) 6.9 (244) 7.9 (279) m³/min Air Flow Rates (cfm) 4.8 (169) 6.0 (212) 4.0 (141) 5.2 (184) Type Cross Flow Fan Motor Output Speed Steps...
  • Page 43 Heat Pump SiBE12-712 50Hz 230V ATXS35DAVMB 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 44 SiBE12-712 Heat Pump 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...
  • Page 45 Heat Pump SiBE12-712 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 46 SiBE12-712 Heat Pump Floor Standing Type 50Hz 220-230-240V FVXS25FV1B FVXS35FV1B Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class Front Panel Color White White 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 Air Flow Rates...

  • Page 47: Outdoor Units

    Heat Pump SiBE12-712 Outdoor Units 50Hz 220-230-240V 2MXS40FV1B Model Cooling Heating Capacity — Power Consumption — Running Current — Casing Color Ivory White Type Hermetically Sealed Swing Type Compressor Model 1YC23ABXD Motor Output Model FVC50K Refrigerant Charge 0.45 Type R-410A Refrigerant Charge 1.20...
  • Page 48 SiBE12-712 Heat Pump 50Hz 220-230-240V 2AMX40FV1B Model Cooling Heating — Capacity — Power Consumption — Running Current Casing Color Ivory White Type Hermetically Sealed Swing Type Compressor Model 1YC23ABXD Motor Output Model FVC50K Refrigerant Oil Charge 0.45 Type R-410A Refrigerant Charge 1.20 m³/min...
  • Page 49 Heat Pump SiBE12-712 Specifications...

  • Page 50: Part 3 Printed Circuit Board Connector Wiring Diagram

    SiBE12-712 Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........40 1.1 Wall Mounted Type ................40 1.2 Duct Connected Type................46 1.3 Floor / Ceiling Suspended Dual Type.............48 1.4 Floor Standing Type ................51 1.5 Outdoor Unit ...................53 Printed Circuit Board Connector Wiring Diagram...

  • Page 51: Printed Circuit Board Connector Wiring Diagram

    Printed Circuit Board Connector Wiring Diagram SiBE12-712 Printed Circuit Board Connector Wiring Diagram Wall Mounted Type 1.1.1 FTK(X)S 20/25/35 D, ATK(X)S 20/25/35 E Connectors PCB(1) (Control PCB) Connector for fan motor Connector for swing motor (horizontal blades) Connector for centralized control (HA) Connector for display PCB Connector for signal receiver PCB...
  • Page 52 SiBE12-712 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB +12V LED A (R6039) PCB(2): Signal Receiver PCB PCB(3): Display PCB LED1 LED2 LED3 RTH1 (R5234) (R4290) PCB(4): INTELLIGENT EYE sensor PCB (R4291) Printed Circuit Board Connector Wiring Diagram...
  • Page 53 Printed Circuit Board Connector Wiring Diagram SiBE12-712 1.1.2 FTK(X)S 20/25/35 C, ATK(X)S 20/25/35 D Connectors PCB(1) (Control PCB) Connector for AC fan motor Connector for swing motor (Horizontal Flap) Connector for AC fan motor Connector for centralized control to 5 rooms Connector for signal receiver PCB Connector for heat exchanger thermistor Connector for INTELLIGENT EYE Sensor PCB...
  • Page 54 SiBE12-712 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB PCB(2): Signal Receiver PCB PCB(3): INTELLIGENT EYE Sensor PCB Printed Circuit Board Connector Wiring Diagram...
  • Page 55 Printed Circuit Board Connector Wiring Diagram SiBE12-712 1.1.3 FTXG 25/35 E, ATXG 25/35 E Connectors PCB(1) (Control PCB) Connector for fan motor Connector for centralized control (HA) Connector for heat exchanger thermistor Connector for INTELLIGENT EYE sensor PCB and control Connector for swing motor Connector for signal receiver PCB Connector for reduction motor (front panel mechanism)
  • Page 56 SiBE12-712 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB (indoor unit) JA JC (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 57: Duct Connected Type

    Printed Circuit Board Connector Wiring Diagram SiBE12-712 Duct Connected Type Connectors PCB(1) (Control PCB) Connector for AC fan motor Connector for AC fan motor Connector for centralized control to 5 rooms Connector for display PCB Connector for heat exchanger thermistor PCB(2) (Display PCB) Connector for control PCB Note:...
  • Page 58 SiBE12-712 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (2): Display PCB 2P084375 Printed Circuit Board Connector Wiring Diagram...

  • Page 59: Floor / Ceiling Suspended Dual Type

    Printed Circuit Board Connector Wiring Diagram SiBE12-712 Floor / Ceiling Suspended Dual Type Connectors PCB(1) (Control PCB) Connector for swing motor (horizontal swing) Connector for fan motor Connector for centralized control Connector for display PCB Connector for signal receiver PCB Connector for heat exchanger thermistor Connector for power supply PCB PCB(2) (Power Supply PCB)
  • Page 60 SiBE12-712 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (1): Control PCB PCB Detail PCB (2): Power Supply PCB Printed Circuit Board Connector Wiring Diagram...
  • Page 61 Printed Circuit Board Connector Wiring Diagram SiBE12-712 PCB (3): Display PCB PCB (4): Signal Receiver PCB EX511 REV 12 PHOTO 2P084377- 1 S31(RTH) (R4977) Printed Circuit Board Connector Wiring Diagram...

  • Page 62: Floor Standing Type

    SiBE12-712 Printed Circuit Board Connector Wiring Diagram Floor Standing Type Connectors PCB(1) (Sensor PCB) Connector for control PCB PCB(2) (Control PCB) Connector for fan motor Connector for centralized control Connector for service PCB Connector for lower air outlet motor Connector for swing motor Connector for display PCB Connector for sensor PCB PCB(3) (Service PCB)
  • Page 63 Printed Circuit Board Connector Wiring Diagram SiBE12-712 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 64: Outdoor Unit

    SiBE12-712 Printed Circuit Board Connector Wiring Diagram Outdoor Unit Connectors PCB (1) (Control PCB) Connector for electronic expansion valve coil A port Connector for electronic expansion valve coil B port Connector for overload protector Connector for terminal strip Connector for fan motor Connector for four way valve coil Connector for thermistor (outdoor air, condenser, and discharge pipe)
  • Page 65 Printed Circuit Board Connector Wiring Diagram SiBE12-712 PCB Detail PCB (1): Control PCB LED A S20 S91 S90 S92 2P190760 Printed Circuit Board Connector Wiring Diagram...

  • Page 66: Part 4 Function And Control

    SiBE12-712 Part 4 Function and Control 1. Main Functions..................56 1.1 Frequency Principle................56 1.2 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing ..58 1.3 Operation Starting Control..............60 1.4 Fan Speed Control for Indoor Units............61 1.5 Programme Dry Function ...............62 1.6 Automatic Operation................63 1.7 Thermostat Control.................64 1.8 Night Set Mode..................65 1.9 ECONO Mode ..................66...

  • Page 67: Main Functions

    Main Functions SiBE12-712 1. Main Functions Note: See the list of functions for the functions applicable to different models. Frequency Principle Main Control The compressor is frequency-controlled during normal operation. The target frequency is set by the following 2 parameters coming from the operating indoor unit: Parameters The load condition of the operating indoor unit The difference between the room temperature and the set temperature...
  • Page 68 SiBE12-712 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 69: Power-Airflow Dual Flaps, Wide Angle Louvers And Auto-Swing

    Main Functions SiBE12-712 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 70 SiBE12-712 Main Functions 3-D Airflow FTXG25/35E, ATXG25/35E Alternative repetition of vertical and horizontal swing motions enables uniform air- conditioning of the entire room. This function is effective for starting the air conditioner. When the horizontal swing and vertical swing are both set to auto mode, the airflow become 3-D airflow and the horizontal swing and vertical swing motions are alternated.

  • Page 71: Operation Starting Control

    Main Functions SiBE12-712 Operation Starting Control FTXG25-35E, FTXG25-35E 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 ∆ D signal after the front panel starts moving 3.

  • Page 72: Fan Speed Control For Indoor Units

    SiBE12-712 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 203.

  • Page 73: Programme Dry Function

    Main Functions SiBE12-712 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 74: Automatic Operation

    SiBE12-712 Main Functions Automatic Operation Automatic Cooling / Heating Function (Heat Pump Only) When the AUTO mode is selected with the remote controller, the microcomputer automatically determines the operation mode from cooling and heating according to the room temperature and setting temperature at the time of the operation startup, and automatically operates in that mode.

  • Page 75: Thermostat Control

    Main Functions SiBE12-712 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 76: Night Set Mode

    SiBE12-712 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 77: Econo Mode

    Main Functions SiBE12-712 ECONO Mode Outline FTK(X)S20-35D, FVXS25/35F 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 78: Intelligent Eye

    SiBE12-712 Main Functions 1.10 INTELLIGENT EYE This is the function that detects existence of humans in the room by a human motion sensor (INTELLIGENT EYE) and reduces the capacity when there is no human in the room in order to save electricity.
  • Page 79 Main Functions SiBE12-712 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 80: Home Leave Operation

    SiBE12-712 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 81: Inverter Powerful Operation

    Main Functions SiBE12-712 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 temperature will be converted to the following states in a period of twenty minutes.

  • Page 82: Other Functions

    SiBE12-712 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 83 Main Functions SiBE12-712 1.13.6 Air-Purifying Filter For FLK(X)S25/35B A double structure made up of a bacteriostatic filter and an Air-Purifying Filter traps dust, mildew, mites, tobacco smoke, and allergy-causing pollen. Replace the Air-Purifying Filter once every 3 months. 1.13.7 Air Purifying Filter with Photocatalytic Deodorizing Function For FTK(X)S20-35C, ATK(X)S20-35D This filter incorporates the benefits the Air Purifying Filter and Photocatalytic Deodorizing Filter in a single unit.

  • Page 84: Function Of Thermistor

    SiBE12-712 Main Functions 1.14 Function of Thermistor 1.14.1 Heat Pump Model Expansion valve Four way valve (R7042) Compressor 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 85 Main Functions SiBE12-712 Indoor Heat 1. The indoor heat exchanger thermistors are used for controlling target discharge temperature. The system sets a target discharge pipe temperature according to the outdoor and indoor Exchanger heat exchanger temperature, and controls the electronic expansion valve opening so that Thermistor the target discharge temperature can be obtained.
  • Page 86 SiBE12-712 Main Functions 1.14.2 Cooling Only Model Expansion valve Compressor (R4688) 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 87: Control Specification

    Control Specification SiBE12-712 2. Control Specification Mode Hierarchy Outline There are two modes; the mode selected in user’s place (normal air conditioning mode) and forced operation mode for installation and providing service. Detail 1. For heat pump model There are following modes; stop, cooling (includes drying), heating (include defrosting) Air conditioner control mode Forced operating mode Forced cooling (for Pump Down Operation)

  • Page 88: Frequency Control

    SiBE12-712 Control Specification Frequency Control Outline Frequency that corresponds to each room’s capacity will be determined according to the difference in the temperature of each room and the temperature that is set by the remote controller. The function is explained as follows. 1.
  • Page 89 Control Specification SiBE12-712 For Cooling Only Model 1. Determine command frequency Command frequency will be determined in the following order of priority. 1.1 Limiting frequency by drooping function Input current, discharge pipes, freeze prevention, dew prevention, fin thermistor temperature. 1.2 Indoor frequency command 2.
  • Page 90 SiBE12-712 Control Specification 3. Limit of frequency variation width When the difference between input current and input current drooping value is less than 1 A, the frequency increase width must be limited. 4. Frequency management when other controls are functioning When each frequency is drooping;...

  • Page 91: Controls At Mode Changing / Start-Up

    Control Specification SiBE12-712 Controls at Mode Changing / Start-up 2.3.1 Preheating Operation Outline Operate the inverter in the open phase operation with the conditions including the preheating command from the indoor, the outdoor air temperature and discharge pipe temperature. Detail Preheating ON Condition When outdoor air temperature is below 10.5ºC and discharge pipe temperature is below 10.5ºC, inverter in open phase operation starts.

  • Page 92: Discharge Pipe Temperature Control

    SiBE12-712 Control Specification Discharge Pipe Temperature Control Outline The discharge pipe temperature is used as the compressor's internal temperature. If the discharge pipe temperature rises above a certain level, the operating frequency upper limit is set to keep this temperature from going up further. Detail Divide the Zone Keep...

  • Page 93: Freeze-Up Protection Control

    Control Specification SiBE12-712 Freeze-up Protection Control Outline During cooling operation, the signals being sent from the indoor unit allow the operating frequency limitation and then prevent freezing of the indoor heat exchanger. (The signal from the indoor unit must be divided into the zones as the followings. Detail Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 sec from...

  • Page 94: Fan Control

    SiBE12-712 Control Specification Fan Control Outline Fan control is carried out according to the following priority. 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 95: Defrost Control

    Control Specification SiBE12-712 2.10 Defrost Control Outline Heat Pump Only Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor heat exchanger temperature must be more than its fixed value when finishing. Detail Conditions for Starting Defrost The starting conditions must be made with the outdoor air temperature and heat exchanger temperature.

  • Page 96: Electronic Expansion Valve Control

    SiBE12-712 Control Specification 2.11 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 97 Control Specification SiBE12-712 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 98 SiBE12-712 Control Specification 2.11.1 Fully Closing with Power On Initialize the electronic expansion valve when turning on the power, set the opening position and develop pressure equalizing. 2.11.2 Pressure Equalization Control When the compressor is stopped, open and close the electronic expansion valve and develop pressure equalization.
  • Page 99 Control Specification SiBE12-712 Detail Detect Disconnection If a 780-second timer for open control becomes over, the following adjustment must be made. 1. When the operation mode is cooling When the discharge pipe temperature is lower than the outdoor heat exchanger temperature, the discharge pipe thermistor disconnection must be ascertained.

  • Page 100: 2.12 Malfunctions

    SiBE12-712 Control Specification 2.12 Malfunctions 2.12.1 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 101: Forced Operation Mode

    Control Specification SiBE12-712 Detail Judgment by Input Current When an output frequency is exceeds 51 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 higher than 101°C, the electronic expansion value opening is 450 plus (max.) and the adjustment is made for insufficient gas.

  • Page 102: 2.14 Additional Function

    SiBE12-712 Control Specification 2.14 Additional Function 2.14.1 POWERFUL Operation Mode Compressor operating frequency and outdoor unit airflow rate are increased. 2.14.2 Voltage Detection Function Power supply voltage is detected each time equipment operation starts. Function and Control...
  • Page 103 Control Specification SiBE12-712 Function and Control...

  • Page 104: Part 5 Operation Manual

    SiBE12-712 Part 5 Operation Manual 1. System Configuration................94 1.1 Operation Instructions ................94 2. Instruction....................95 2.1 FTK(X)S, ATK(X)S, FTXG, ATXG, FDK(X)S, FLK(X)S Series ....95 2.2 FVK(X)S Series ..................159 Operation Manual...

  • Page 105: System Configuration

    System Configuration SiBE12-712 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 106: Instruction

    SiBE12-712 Instruction Instruction FTK(X)S, ATK(X)S, FTXG, ATXG, FDK(X)S, FLK(X)S Series 2.1.1 Manual Contents and Reference Page Wall Mounted Type FTK(X)S20/25/35D Model Series FTK(X)S20/25/35C FTXG25/35E ATKS20/25/35E ATK(X)S20/25/35D ATXG25/35E ATXS20/25/35E Read before Operation Safety Precautions Names of Parts Preparation before Operation Operation AUTO, DRY, COOL, HEAT, FAN Operation Adjusting the Air Flow Direction...
  • Page 107 • 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 108: Installation Site

    SiBE12-712 Instruction • Do not place appliances which produce open fire in places exposed to the air flow from the unit or under the indoor unit. It may cause incomplete combustion or deformation of the unit due to the heat. •...
  • Page 109 Instruction SiBE12-712 2.1.3 Names of Parts FTK(X)S 20/25/35 D, ATKS 20/25/35 E, ATXS 20/25/35 E Names of parts Indoor Unit ON/OFF Operation Manual...
  • Page 110 SiBE12-712 Instruction Outdoor Unit Indoor Unit 1. Air filter 12. Indoor Unit ON/OFF switch: • Push this switch once to start operation. 2. Titanium Apatite Photocatalytic Push once again to stop it. Air-Purifying Filter: • The operation mode refers to the following •...
  • Page 111 Instruction SiBE12-712 Remote Controller 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. FAN setting button: •...
  • Page 112 SiBE12-712 Instruction FTK(X)S 20/25/35 C, ATK(X)S 20/25/35 D Names of parts Indoor Unit Operation Manual...
  • Page 113 Instruction SiBE12-712 Outdoor Unit Indoor Unit 1. Air filter 12. Indoor Unit ON/OFF switch: • Push this switch once to start operation. 2. Air purifying filter with Push once again to stop it. photocatalytic deodorizing function: • The operation mode refers to the following •...
  • Page 114 SiBE12-712 Instruction Remote Controller < ARC433B1, B2 > 1. Signal transmitter: (AUTO/DRY/COOL/HEAT/FAN) • It sends signals to the indoor unit. 8. QUIET button: OUTDOOR UNIT QUIET 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 with all 10.
  • Page 115 Instruction SiBE12-712 FTXG 25/35 E, ATXG 25/35 E Names of parts Indoor Unit (With the panel closed) Operation Manual...
  • Page 116 SiBE12-712 Instruction Outdoor Unit Indoor Unit 1. Air filter • The operation mode refers to the following table. 2. Titanium Apatite Photocatalytic Tempera- Air flow Air-Purifying Filter : Mode ture setting rate • These filters are attached to the inside of F(C)TXG AUTO 25°C AUTO...
  • Page 117 Instruction SiBE12-712 Remote Controller QUIET ARC433B41 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 with all 10.
  • Page 118 SiBE12-712 Instruction FDK(X)S 25/35 C, FDK(X)S 25/35 E Names of parts Indoor Unit Operation Manual...
  • Page 119 Instruction SiBE12-712 Outdoor Unit Indoor Unit 1. Air outlet 10. Indoor Unit ON/OFF switch: • Push this switch once to start operation. 2. Air outlet grille: (Field supply) Push once again to stop it. • Appearance of the Air outlet grille and Air inlet •...
  • Page 120 SiBE12-712 Instruction Remote Controller 〈 ARC433B69, B76 〉 1. Signal transmitter: 7. MODE selector button: • It sends signals to the indoor unit. • It selects the operation mode. (AUTO/DRY/COOL/HEAT/FAN) 2. Display: 8. QUIET button: OUTDOOR UNIT QUIET • It displays the current settings. operation (In this illustration, each section is shown with all its displays ON for the purpose of...
  • Page 121 Instruction SiBE12-712 FLK(X)S 25/35 B Names of parts Indoor Unit The indoor unit can be installed either to the ceiling or to a wall. The descriptions contained in this man- ual show the case when installation is being carried out to the ceiling. (The methods of operation used are the same when installing to a wall.) Opening the front panel How to open the front panel...
  • Page 122 SiBE12-712 Instruction 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. Push once again to stop it. 2. Air outlet •...
  • Page 123 Instruction SiBE12-712 Remote Controller HOME LEAVE ON/OFF TEMP POWERFUL MODE SWING QUIET < > ARC433B67, B68 1. Signal transmitter: 7. MODE selector button: • It selects the operation mode. • It sends signals to the indoor unit. (AUTO/DRY/COOL/HEAT/FAN) 2. Display: 8.
  • Page 124 SiBE12-712 Instruction 2.1.4 Preparation before Operation Preparation Before Operation To set the batteries Position + and – correctly! 1. Slide the front cover to take it off. 2. Set two dry batteries (AAA). 3. Set the front cover as before. ATTENTION About batteries •...
  • Page 125 Instruction SiBE12-712 Preparation Before Operation To operate the remote controller • To use the remote controller, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote control- ler, such as a curtain, the unit will not operate. •...
  • Page 126 SiBE12-712 Instruction To set the clock 1. Press “CLOCK button”. is displayed. blinks. 2. Press “TIMER setting button” to set the clock to the present time. Holding down “ ” or “ ” button rapidly increases or decreases the time display. 3.
  • Page 127 Instruction SiBE12-712 2.1.5 AUTO·DRY·COOL·HEAT·FAN Operation AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode. To start operation 1.
  • Page 128 SiBE12-712 Instruction To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode Five levels of air flow rate setting from “ ” to “ ” plus “ ” “ ”...
  • Page 129 Instruction SiBE12-712 2.1.6 Adjusting the Air Flow Direction FTK(X)S 20/25/35 D, ATKS 20/25/35 E, ATXS 20/25/35 E 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”. •...
  • Page 130 SiBE12-712 Instruction To start COMFORT AIRFLOW operation 3. Press “COMFORT AIRFLOW button”. • The flap position will change, preventing air from blowing directly on the occupants of the room. • “ ” is displayed on the LCD. <COOL/DRY> The flap will go up. <HEAT>...
  • Page 131 Instruction SiBE12-712 FTK(X)S 20/25/35 C, ATK(X)S 20/25/35 D Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blades (flaps) 1. Press “SWING button”. • “ ” is displayed on the LCD and the flaps will begin to swing.
  • Page 132 SiBE12-712 Instruction Operation Manual...
  • Page 133 Instruction SiBE12-712 FTXG 25/35 E, ATXG 25/35 E Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button ”. • “ ” is displayed on the LCD. 2.
  • Page 134 SiBE12-712 Instruction 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 the LCD. 〈COOL/DRY〉 The flap will go up. 〈HEAT〉...
  • Page 135 Instruction SiBE12-712 FLK(X)S 25/35 B Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button”. • “ ” is displayed on the LCD and the flaps will begin to swing.
  • Page 136 SiBE12-712 Instruction Operation Manual...
  • Page 137 Instruction SiBE12-712 2.1.7 POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity. To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20 minutes. Then the system automatically operates again with the settings which were used before POWERFUL operation.
  • Page 138 SiBE12-712 Instruction 2.1.8 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is conve- nient during night. To start OUTDOOR UNIT QUIET operation 1.
  • Page 139 Instruction SiBE12-712 2.1.9 ECONO Operation ECONO Operation ECONO operation is a function which enables efficient operation by lowering the maximum power con- sumption value. To start ECONO operation 1. Press “ECONO button” . • “ ” is displayed on the LCD. To cancel ECONO opera- tion 2.
  • Page 140 SiBE12-712 Instruction 2.1.10 HOME LEAVE Operation HOME LEAVE Operation HOME LEAVE operation is a function which allows you to record your preferred temperature and air flow rate settings. To start HOME LEAVE operation 1. Press “HOME LEAVE button” . • “ ”...
  • Page 141 Instruction SiBE12-712 Operation Manual...
  • Page 142 SiBE12-712 Instruction 2.1.11 INTELLIGENT EYE Operation FTK(X)S 20/25/35 D, ATKS 20/25/35 E, ATXS 20/25/35 E INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ”...
  • Page 143 Instruction SiBE12-712 INTELLIGENT EYE Operation “INTELLIGENT EYE” is useful for Energy Saving Energy saving operation • Change the temperature –2°C in heating / +2°C in cooling / +2°C in dry mode from set temperature. • Decrease the air flow rate slightly in fan operation. (In FAN mode only) Notes on “INTELLIGENT EYE”...
  • Page 144 SiBE12-712 Instruction FTK(X)S 20/25/35 C, ATK(X)S 20/25/35 D INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ” is displayed on the LCD. To cancel the INTELLIGENT EYE operation 2.
  • Page 145 Instruction SiBE12-712 Operation Manual...
  • Page 146 SiBE12-712 Instruction FTXG 25/35 E, ATXG 25/35 E INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ” is displayed on the L CD. To cancel the INTELLIGENT EYE operation...
  • Page 147 Instruction SiBE12-712 “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 148 SiBE12-712 Instruction 2.1.12 TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. To use OFF TIMER opera- tion •...
  • Page 149 Instruction SiBE12-712 Operation Manual...
  • Page 150 SiBE12-712 Instruction 2.1.13 Note for Multi System Note for Multi System << >> What is a “Multi System”? This system has one outdoor unit connected to multiple indoor units. room room room Outdoor unit Selecting the Operation Mode room room room Living Living...
  • Page 151 Instruction SiBE12-712 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 152 SiBE12-712 Instruction 2.1.14 Care and Cleaning FTK(X)S 20/25/35 D, ATKS 20/25/35 E, ATXS 20/25/35 E Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote controller 1.
  • Page 153 Instruction SiBE12-712 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 154 SiBE12-712 Instruction NOTE • Operation with dirty filters: (1) cannot deodorize the air. (2) cannot clean the air. (3) results in poor heating or cooling. (4) may cause odour. • To order Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service shop there you bought the air conditioner.
  • Page 155 Instruction SiBE12-712 FTK(X)S 20/25/35 C, ATK(X)S 20/25/35 D Operation Manual...
  • Page 156 SiBE12-712 Instruction Operation Manual...
  • Page 157 Instruction SiBE12-712 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 158 SiBE12-712 Instruction FTXG 25/35 E, ATXG 25/35 E 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 159 Instruction SiBE12-712 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 then secure it using the supporting plate on the right. 2. Pull out the air filters. •...
  • Page 160 SiBE12-712 Instruction NOTE • Operation with dirty filters: (1) cannot deodorize the air. (2) cannot clean the air. (3) results in poor heating or cooling. (4) may cause odour. • To order Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service shop there you bought the air conditioner.
  • Page 161 Instruction SiBE12-712 FDK(X)S 25/35 C, FDK(X)S 25/35 E Care and Cleaning • Only a qualified service person is allowed to CAUTION perform maintenance. • Before cleaning, be sure to stop the operation and turn the breaker OFF. Cleaning the air filter 1.Removing the air filter.
  • Page 162 • 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 163 Instruction SiBE12-712 FLK(X)S 25/35 B Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. Front panel 1. Open the front panel. •...
  • Page 164 SiBE12-712 Instruction Filters 1. Open the front panel. 2. Pull out the air filters. • 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 165 Instruction SiBE12-712 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 166 SiBE12-712 Instruction 2.1.15 Troubleshooting Trouble Shooting These cases are not troubles. The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Explanation Operation does not start soon. • This is to protect the air conditioner. •...
  • Page 167 Instruction SiBE12-712 Check again. Please check again before calling a repair person. Case Check The air conditioner does not • Hasn’t a breaker turned OFF or a fuse blown? operate. • Isn’t it a power failure? (OPERATION lamp is off.) •...
  • Page 168 SiBE12-712 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. Do not attempt to repair or modify the air conditioner by yourself.
  • Page 169 Instruction SiBE12-712 Fault diagnosis. FAULT DIAGNOSIS BY REMOTE CONTROLLER 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 “ ” indication flashes on the temperature display section.

  • Page 170: Fvk(X)S 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 171 Instruction SiBE12-712 • Do not block air inlets nor outlets. Impaired air flow may result in insufficient performance or trouble. • 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.
  • Page 172 SiBE12-712 Instruction 2.2.2 Names of parts Names of parts 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 •...
  • Page 173 Instruction SiBE12-712 Outdoor Unit 25/35 class 50 class Indoor Unit 1. Titanium Apatite Photocatalytic • The operation mode refers to the following Air-Purifying Filter: table. • These filters are attached to the inside of Temperature Air flow Model Mode the air filters. setting rate 2.
  • Page 174 SiBE12-712 Instruction Remote Controller <Open the lid> <ARC452A1> 1. Signal transmitter: 9. ECONO button: • It sends signals to the indoor unit. ECONO operation (page 16.) 10. SWING button: 2. Display: • Adjusting the Air Flow Direction (page 12.) • It displays the current settings. 11.
  • Page 175 Instruction SiBE12-712 2.2.3 Preparation Before Operation Preparation Before Operation To set the batteries 1. Slide the front cover to take it off. Position + and correctly! – 2. Set two dry batteries (LR03·AAA). 3. Set the front cover as before. To operate the remote controller •...
  • Page 176 SiBE12-712 Instruction Preparation Before Operation To set the clock 1. Press “CLOCK button”. 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. Holding down “...
  • Page 177 Instruction SiBE12-712 Turn the breaker ON • Turning ON the breaker closes the flap. (This is a normal procedure.) NOTE Tips for saving energy • Be careful not to cool (heat) the room too much. Recommended temperature setting Keeping the temperature setting at a moderate level helps save energy. •...
  • Page 178 SiBE12-712 Instruction 2.2.4 AUTO · DRY · COOL · HEAT · FAN Operation AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode.
  • Page 179 Instruction SiBE12-712 To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode Five levels of air flow rate setting from “ ” to “ ” plus “ ” “ ”...
  • Page 180 SiBE12-712 Instruction 2.2.5 Adjusting the Air Flow Direction Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button ”. • “ ” is displayed on the LCD and the flaps will begin to swing.
  • Page 181 Instruction SiBE12-712 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 182 SiBE12-712 Instruction 2.2.6 POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity. To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20minutes. Then the system automatically operates again with the settings which were used before POWERFUL operation.
  • Page 183 Instruction SiBE12-712 2.2.7 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. To start OUTDOOR UNIT QUIET operation 1.
  • Page 184 SiBE12-712 Instruction 2.2.8 ECONO Operation 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 185 Instruction SiBE12-712 2.2.9 TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. To use OFF TIMER operation •...
  • Page 186 SiBE12-712 Instruction TIMER 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”. is displayed. blinks. 2. Press “SELECT button” until the time setting reaches the point you like.
  • Page 187 Instruction SiBE12-712 2.2.10 WEEKLY TIMER Operation WEEKLY TIMER Operation Up to 4 timer settings can be saved for 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 188 SiBE12-712 Instruction 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 189 Instruction SiBE12-712 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.
  • Page 190 SiBE12-712 Instruction WEEKLY TIMER Operation Confirming a reservation • The reservation can be confirmed. 1. Press “ button”. • The day of the week and the reservation number of the current day will be displayed. 2. Press “SELECT button” to select the day of the week and the reservation number to be confirmed.
  • Page 191 Instruction SiBE12-712 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. 3.
  • Page 192 SiBE12-712 Instruction 2.2.11 Note for Multi System Note for Multi System 〈〈 〉〉 What is a “Multi System”? This system has one outdoor unit connected to multiple indoor units. Selecting the Operation Mode room Outdoor unit 1. With the Priority Room Setting room present but inactive or not present.
  • Page 193 Instruction SiBE12-712 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. 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 194 SiBE12-712 Instruction 2.2.12 Care and Cleaning Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. Front panel 1.
  • Page 195 Instruction SiBE12-712 Filters 1. Open the front panel. (page 26.) 2. Remove the air filter. • Press the claws on the right and left of the air filter down slightly, then pull upward. 3. Take off the Titanium Apatite Photocatalytic Air-Purifying Filter. •...
  • Page 196 SiBE12-712 Instruction NOTE • Operation with dirty filters: (1) cannot deodorize the air. (2) cannot clean the air. (3) results in poor heating or cooling. (4) may cause odour. • To order Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service shop there you bought the air conditioner.
  • Page 197 Instruction SiBE12-712 2.2.13 Troubleshooting Trouble Shooting These cases are not troubles. The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Explanation Operation does not start soon. • This is to protect the air conditioner. •...
  • Page 198 SiBE12-712 Instruction Check again. Please check again before calling a repair person. Case Check The air conditioner does not • Hasn’t a breaker turned OFF or a fuse blown? operate. • Isn’t it a power failure? (OPERATION lamp is off.) •...
  • Page 199 Instruction SiBE12-712 Call the service shop immediately. WARNING When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner. Do not attempt to repair or modify the air conditioner by yourself.
  • Page 200 SiBE12-712 Instruction Fault diagnosis. FAULT DIAGNOSIS BY REMOTE CONTROLLER In the ARC452A series, the temperature display sections on the main unit indicate corresponding codes. 1. When the TIMER CANCEL button is held down for 5 seconds, a “ ” indication flashes on the temperature display section.
  • Page 201 Instruction SiBE12-712 Operation Manual...

  • Page 202: Part 6 Service Diagnosis

    SiBE12-712 Part 6 Service Diagnosis 1. Caution for Diagnosis................192 2. Problem Symptoms and Measures .............194 3. Service Check Function ..............195 3.1 Check Method 1 ...................195 3.2 Check Method 2 ...................197 4. Troubleshooting ..................199 4.1 Error Codes and Description ..............199 4.2 Indoor Unit PCB Abnormality ...............200 4.3 Freeze-up Protection Control or High Pressure Control.......201 4.4 Fan Motor or Related Abnormality ............203 4.5 Thermistor or Related Abnormality (Indoor Unit)........206...

  • Page 203: Caution For Diagnosis

    Caution for Diagnosis SiBE12-712 1. Caution for Diagnosis The operation lamp flashes when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation. 2.
  • Page 204 SiBE12-712 Caution for Diagnosis In case of FVXS 25/35 F Series OPERATION lamp (green) (R6843) Caution: Operation stops suddenly. (Operation lamp blinks.) Cause of above trouble could be "Operation mode butting". 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 205: Problem Symptoms And Measures

    Problem Symptoms and Measures SiBE12-712 Problem Symptoms and Measures Symptom Check Item Details of Measure Reference Page None of the Units Check the power supply. Check to make sure that the rated voltage is — Operates. supplied. Check the type of the indoor units. Check to make sure that the indoor unit type is —...

  • Page 206: Service Check Function

    SiBE12-712 Service Check Function 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 207 Service Check Function SiBE12-712 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. < ARC452A1 > (R6757) 2.

  • Page 208: Check Method 2

    SiBE12-712 Service Check Function Check Method 2 1. Enter the diagnosis mode. Press the 3 buttons (TEMP ,TEMP , MODE) simultaneously. (R4272) The digit of the number of tens blinks. Try again from the start when the digit does not blink. (R4273) 2.
  • Page 209 Service Check Function SiBE12-712 5. Press the TEMP button. Press TEMP or TEMP and change the digit until you hear the sound of “beep”. (R4277) 6. Diagnose by the sound. “pi” : The both numbers of tens and units do not accord with the error code. “pi pi”...

  • Page 210: Troubleshooting

    SiBE12-712 Troubleshooting 4. Troubleshooting Error Codes and Description Reference Code Indication Description Page System Normal — Insufficient gas Over-voltage detection / low-voltage detection Outdoor unit PCB abnormality or signal transmission circuit abnormality Unspecified voltage (between indoor and outdoor units) Anti-icing function in other rooms Indoor Indoor unit PCB abnormality Unit...

  • Page 211: Indoor Unit Pcb Abnormality

    Troubleshooting SiBE12-712 Indoor Unit PCB Abnormality Remote Controller Display Method of Evaluation of zero-cross detection of power supply by indoor unit. Malfunction Detection Malfunction When there is no zero-cross detection in approximately 10 continuous seconds. Decision Conditions Supposed Faulty indoor unit PCB Causes Faulty connector connection Troubleshooting...

  • Page 212: Freeze-Up Protection Control Or High Pressure Control

    SiBE12-712 Troubleshooting Freeze-up Protection Control or High Pressure Control Remote Controller Display Method of High pressure control (heat pump model only) Malfunction During heating operations, the temperature detected by the indoor heat exchanger thermistor is used for the high pressure control (stop, outdoor fan stop, etc.) Detection The freeze-up protection control (operation halt) is activated during cooling operation according to the temperature detected by the indoor unit heat exchanger thermistor.
  • Page 213 Troubleshooting SiBE12-712 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.240 Is there any Provide sufficient air passage. short-circuit? Check the intake air filter. Is it very dirty? Clean the air filter.

  • Page 214: Fan Motor Or Related Abnormality

    SiBE12-712 Troubleshooting Fan Motor or Related Abnormality 4.4.1 AC Motor Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Detection Malfunction When the detected rotation speed does not reach the demanded rotation speed of the target tap, and is less than 50% of the maximum fan motor rotation speed.
  • Page 215 Troubleshooting SiBE12-712 4.4.2 DC Motor Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Detection Malfunction When the detected rotation speed does not reach the demanded rotation speed of the target tap, and is less than 50% of the maximum fan motor rotation speed.
  • Page 216 SiBE12-712 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.237 and rotate fan by hand. Does fan rotate Replace fan motor. smoothly? Turn power ON and operate fan.

  • Page 217: Thermistor Or Related Abnormality (Indoor Unit)

    Troubleshooting SiBE12-712 Thermistor or Related Abnormality (Indoor Unit) Remote Controller Display Method of The temperatures detected by the thermistors are used to determine thermistor errors. Malfunction Detection Malfunction When the thermistor input is more than 4.96 V or less than 0.04 V during compressor operation∗.

  • Page 218: Front Panel Open / Close Fault

    SiBE12-712 Troubleshooting Front Panel Open / Close Fault Remote Controller Display Method of Malfunction Detection Malfunction The system will be shut down when the error occurs twice. Decision Conditions Supposed Malfunction of the reduction motor Causes Malfunction or deterioration of the front panel mechanism Malfunction of the limit switch Troubleshooting Be sure to turn off power switch before connect or disconnect connector,...

  • Page 219: Freeze-Up Protection Control

    Troubleshooting SiBE12-712 Freeze-up Protection Control Remote Controller Display Method of Indoor unit icing, during cooling operation, is detected by checking the temperatures sensed by the indoor unit heat exchanger thermistor and room temperature thermistor that are located in a Malfunction shut-down room.
  • Page 220 SiBE12-712 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.237 Check the wiring and piping. Check No.06 Correct the wiring or piping Wiring or piping out of spec? Refer to P.240 error.

  • Page 221: Ol Activation (Compressor Overload)

    Troubleshooting SiBE12-712 OL Activation (Compressor Overload) Remote Controller Display Method of A compressor overload is detected through compressor OL. Malfunction Detection Malfunction If the compressor OL is activated twice, the system will be shut down. The error counter will reset itself if this or any other error does not occur during the following Decision 60-minute compressor running time (total time).

  • Page 222: Compressor Lock

    SiBE12-712 Troubleshooting Compressor Lock Remote Controller Display Method of Judging from current waveform generated when high-frequency voltage is applied to the Malfunction compressor. Detection Malfunction The system will be shut down if the error occurs 16 times. Clearing condition: Continuous run for about 11 minutes (normal) Decision Conditions Supposed...

  • Page 223: Dc Fan Lock

    Troubleshooting SiBE12-712 4.10 DC Fan Lock Remote Controller Display Method of A fan motor or related error is detected by checking the high-voltage fan motor rpm being Malfunction detected by the Hall Detection Malfunction The fan does not start in 60 seconds even when the fan motor is running. The system will be shut down if the error occurs 16 times.

  • Page 224: Input Over Current Detection

    SiBE12-712 Troubleshooting 4.11 Input Over Current Detection Remote Controller Display Method of An input over-current is detected by checking the power consumption value of outdoor unit with Malfunction the compressor running. Detection Malfunction The following input value (calculated from power consumption of outdoor unit) with the compressor running continues for 2.5 seconds.
  • Page 225 Troubleshooting SiBE12-712 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.07 ∗ An input over-current may result from wrong internal wiring. If the wires have been disconnected and reconnected for part replacement, for example, and the system is interrupted by an input over-current, Refer to P.241 check the wires again.

  • Page 226: Discharge Pipe Temperature Control

    SiBE12-712 Troubleshooting 4.12 Discharge Pipe Temperature Control Remote Controller Display Method of The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the Malfunction temperature being detected by the discharge pipe thermistor. Detection Malfunction If the temperature being detected by the discharge pipe thermistor rises, the compressor will stop.

  • Page 227: High Pressure Control In Cooling

    Troubleshooting SiBE12-712 4.13 High Pressure Control in Cooling Remote Controller Display Method of High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the Malfunction temperature being sensed by the heat exchanger thermistor exceeds the limit. Detection Malfunction Activated when the temperature being sensed by the heat exchanger thermistor rises above 65°C.
  • Page 228 SiBE12-712 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.04 Check the installation space. Refer to P.237 Check No. 07 Abnormal Check No.06 Installation condition Change the air outlet grille Refer to P.240 check position.

  • Page 229: Compressor Sensor System Abnormality

    Troubleshooting SiBE12-712 4.14 Compressor Sensor System Abnormality Remote Controller Display Method of Fault condition is identified by DC current which is detected before compressor startup. Malfunction Detection Malfunction When the DC current before compressor startup is other than 0.5 to 4.5 V (detected by converting the sensor output to voltage), or the DC voltage is 50 V or less.

  • Page 230: Position Sensor Abnormality

    SiBE12-712 Troubleshooting 4.15 Position Sensor Abnormality Remote Controller Display Method of A compressor startup failure is detected by checking the compressor running condition through Malfunction the position detection circuit. Detection Malfunction The compressor is not running in about 15 seconds after the compressor run command signal is sent.
  • Page 231 Troubleshooting SiBE12-712 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.08 Check the power supply Refer to P.242 Check No. Discharge pressure check. Check No.13 Refer to P.244 Abnormal Replace the stop valve.

  • Page 232: Dc Voltage / Dc Current Sensor Fault

    SiBE12-712 Troubleshooting 4.16 DC Voltage / DC Current Sensor Abnormality Remote Controller Display Method of DC voltage or DC current sensor system fault is identified based on the compressor operation Malfunction frequency and the input current detected by the product of DC current and DC voltage. Detection Malfunction When the compressor operation frequency is more than 52 Hz...

  • Page 233: Thermistor Or Related Abnormality (Outdoor Unit)

    Troubleshooting SiBE12-712 4.17 Thermistor or Related Abnormality (Outdoor Unit) P4,J3,J6,J8,J9,H9 Remote Controller Display Method of This type of error is detected by checking the thermistor input voltage to the microcomputer. Malfunction [A thermistor error is detected by checking the temperature.] Detection Malfunction The thermistor input is above 4.98 V or below 0.02 V with the power on for 5 seconds.
  • Page 234 SiBE12-712 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Turn on the power again. Refer to P.240 Error displayed again Reconnect. on remote controller? Connector or thermistor Reconnect.

  • Page 235: Electrical Box Temperature Rise

    Troubleshooting SiBE12-712 4.18 Electrical Box Temperature Rise Remote Controller Display Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor off. Detection Malfunction With the compressor off, the radiation fin temperature is above 80°C. The error is cleared when the temperature drops below 70°C.
  • Page 236 SiBE12-712 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 (Precaution before turning on the power again) Refer to P.240 Make sure the power has been off for at least 30 seconds. WARNING Turn off the power and turn it on again.

  • Page 237: Radiation Fin Temperature Rise

    Troubleshooting SiBE12-712 4.19 Radiation Fin Temperature Rise Remote Controller Display Method of A radiation fin temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor on. Detection Malfunction If the radiation fin temperature with the compressor on is above 93°C, If a radiation fin temperature rise takes place 255 times successively, the system will be shut Decision down.
  • Page 238 SiBE12-712 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 (Precaution before turning on the power again) Refer to P.240 Make sure the power has been off for at least 30 seconds. WARNING Turn off the power and turn it on again to get the system started.

  • Page 239: Output Over Current Detection

    Troubleshooting SiBE12-712 4.20 Output Over Current Detection Remote Controller Display Method of An output over-current is detected by checking the current that flows in the inverter DC section. Malfunction Detection Malfunction A position signal error occurs while the compressor is running. A speed error occurs while the compressor is running.
  • Page 240 SiBE12-712 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. ∗ An output 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 output over-current, check the wires again.

  • Page 241: Insufficient Gas

    Troubleshooting SiBE12-712 4.21 Insufficient Gas Remote Controller Display Method of Gas shortage detection I : Malfunction A gas shortage is detected by checking the power consumption value and the compressor running frequency. Detection Malfunction Gas shortage detection I : Power consumption < 4578 / 256 (W/Hz) × Compressor running frequency – 638 (W) Decision However, when the status of running frequency >...
  • Page 242 SiBE12-712 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.237 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 243: Over-Voltage Detection / Low-Voltage Detection

    Troubleshooting SiBE12-712 4.22 Over-voltage Detection / Low-voltage Detection Remote Controller Display Method of An abnormal voltage rise (or drop) is detected by checking the detection circuit or DC voltage Malfunction detection circuit. Detection Malfunction An over-voltage signal is fed from the over-voltage detection circuit to the microcomputer, or the voltage being detected by the DC voltage detection circuit is judged to be below 150V for Decision 0.1 second.

  • Page 244: Anti-Icing Function In Other Rooms / Unspecified Voltage

    SiBE12-712 Troubleshooting 4.23 Anti-icing Function in Other Rooms / Unspecified Voltage (between Indoor and Outdoor Units) UA,UH Remote Controller Display Method of A wrong connection is detected by checking the combination of indoor and outdoor units on the microcomputer. Malfunction Detection Malfunction Operation halt due to the anti-icing function in other rooms...

  • Page 245: Outdoor Unit Pcb Abnormality Or Signal Transmission Circuit Abnormality

    Troubleshooting SiBE12-712 4.24 Outdoor Unit PCB Abnormality or Signal Transmission Circuit Abnormality Remote Controller Display Method of 1. Detect within the programme of the microcomputer that the programme is operating normally. Malfunction 2. When indoor-outdoor unit signal transmission can not be performed for more than 15 sec. Detection 3.
  • Page 246 SiBE12-712 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check indoor unit also, because a comunication circuit fault may be caused by the problem related to the indoor unit. Check supply voltage Rated voltage? Rectify the power supply.
  • Page 247 Troubleshooting SiBE12-712 Continued from the previous page Check No.10 Refer to P.242 Does LED A turn off? Check grounding Grounded? Carry out grounding work. The cause seems to be an Check No.10 external factor other than failure of the outdoor unit Power supply waveform check PCB.

  • Page 248: Check

    SiBE12-712 Check 5. Check How to Check 5.1.1 Fan Motor Connector Output Check Check No.01 1. Check connector connection. 2. Check motor power supply voltage output (pins 4-7). 3. Check motor control voltage (pins 4-3). 4. Check rotation command voltage output (pins 4-2). 5.

  • Page 249: Sibe12

    Check SiBE12-712 Valve Body Condition (Symptom) Check Method / Measure (1) Valve body catches at fully opened or half Reset power supply and conduct cooling opened position. operation unit by unit. (Symptom) Cooling: Check the liquid pipe temperature Water leakage at the no-operation unit of no-operation unit.
  • Page 250 SiBE12-712 Check 5.1.4 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 251: Thermistor Resistance Check

    Check SiBE12-712 5.1.5 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 252: Installation Condition Check

    SiBE12-712 Check 5.1.6 Installation Condition Check Check No.07 Installation condition check Check the allowable Abnormal Change the position of the air dimensions of the air suction discharge grille or the and discharge area. installation location. Normal Does the discharged air from other outdoor Change the position of the air unit cause an increase of discharge grille or the...

  • Page 253: Discharge Pressure Check

    Check SiBE12-712 5.1.7 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. Dirty Are the heat exchanger and Clean.
  • Page 254 SiBE12-712 Check 5.1.10 Inverter Units Refrigerant System Check Check No.11 Refrigerant system check the discharge Correct the problem. thermister disconnected from the holder? Is the temperature of the four way valve suction pipe Four way valve defective. abnormaly high? Replace the four way valve. Is any moisture Conduct vacuum drying.

  • Page 255: Power Transistor Check

    Check SiBE12-712 5.1.12 Power Transistor Check Check No.13 Checking the power transistor 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 the power transistor's supply voltage is below 50 V using the tester.
  • Page 256 SiBE12-712 Check 5.1.14 Turning Speed Pulse Input on the Outdoor Unit PCB Check Check No.15 <Propeller fan motor> Make sure the voltage of 270±30V is being applied. (1) Stop the operation first and then the power, and disconnect the connector S70. (2) Make sure there is about DC 270 V between pins 4 and 7.
  • Page 257 Check SiBE12-712 Service Diagnosis...
  • Page 258 SiBE12-712 Part 7 Others 1. Others ....................248 1.1 Test Run from the Remote Controller ..........248 1.2 Jumper Settings ...................249 Others...

  • Page 259: Part 7 Others

    Others SiBE12-712 1. Others Test Run from the Remote Controller For Heat pump In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable temperature. Trial operation may be disabled in either mode depending on the room temperature. After trial operation is complete, set the temperature to a normal level.

  • Page 260: Jumper Settings

    SiBE12-712 Others Jumper Settings 1.2.1 When Two Units are Installed in One Room When two indoor units are installed in one room, the two wireless remote controllers can be set for different addresses. How to set the different addresses Control PCB of the indoor unit (1) Remove the front panel.
  • Page 261 Others SiBE12-712 1.2.3 Adjusting the Angle of the Intelligent Eye Sensor Once installation of the indoor unit is complete, adjust the angle of the Intelligent-eye sensor to ensure the detection area properly covers the room. (Adjustable angle : 15° to right and left of center) Gently push and slide the sensor to adjust the angle.

  • Page 262: Part 8 Appendix

    SiBE12-712 Part 8 Appendix 1. Piping Diagrams..................252 1.1 Indoor Units ..................252 1.2 Outdoor Units ..................256 2. Wiring Diagrams..................257 2.1 Indoor Units ..................257 2.2 Outdoor Units ..................261 Appendix...

  • Page 263: Piping Diagrams

    Piping Diagrams SiBE12-712 Piping Diagrams Indoor Units 1.1.1 Wall Mounted Type FTKS20/25/35D3VMW(L), FTKS20/25/35CAVMB, ATKS20/25/35E2V1B ATKS20/25/35DAVMB INDOOR UNIT INDOOR UNIT MAFFLER ASSY HEAT EXCHANGER 7.0CuT HEAT EXCHANGER 7.0CuT 6.4CuT 6.4CuT THERMISTOR 6.4CuT THERMISTOR ON HEAT EXCH. 6.4CuT ON HEAT EXCH. 6.4CuT 6.4CuT CROSS FLOW FAN FIELD PIPING...
  • Page 264 SiBE12-712 Piping Diagrams FTXS20/25/35CAVMB, ATXS20/25/35DAVMB INDOOR UNIT HEAT EXCHANGER 7.0CuT 6.4CuT THERMISTOR 6.4CuT ON HEAT EXCH. 6.4CuT CROSS FLOW FAN FIELD PIPING (6.4CuT) FAN MOTOR 9.5CuT FIELD PIPING (9.5CuT) REFRIGERANT FLOW COOLING HEATING 4D049319A Appendix...
  • Page 265 Piping Diagrams SiBE12-712 1.1.2 Duct Connected Type FDK(X)S25/35CAVMB, FDK(X)S25/35EAVMB INDOOR UNIT ( 6.4CuT ) HEAT EXCHANGER THERMISTOR ON HEAT FIELD PIPING EXCH. ( 6.4CuT ) SIROCCO FAN FAN MOTOR FIELD PIPING CuT ) CuT ) REFRIGERANT FLOW CDXS25CVMB CDXS50CVMB CDKS25CVMB CDKS50CVMB COOLING CDXS35CVMB...
  • Page 266 SiBE12-712 Piping Diagrams FLXS25/35BAVMB INDOOR UNIT ( 6.4CuT ) HEAT EXCHANGER THERMISTOR FIELD PIPING ON HEAT ( 6.4CuT ) EXCH. SIROCCO FAN FAN MOTOR ( 9.5CuT ) FIELD PIPING ( 9.5CuT ) REFRIGERANT FLOW COOLING HEATING 4D048722A 1.1.4 Floor Standing Type FVXS25/35FV1B INDOOR UNIT MUFFLER ASSY...

  • Page 267: Outdoor Units

    Piping Diagrams SiBE12-712 Outdoor Units 2MKS40FV1B, 2AMK40FV1B OUTDOOR UNIT OUTDOOR TEMPERATURE MUFFLER MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR LIQUID LINE BRANCH WITH HEAT EXCHANGER THERMISTOR MUFFLER PIPE STOP VALVE 7.0CuT FILTER 6.4CuT 6.4CuT 6.4CuT 6.4CuT ROOM A (6.4 CuT) 7.0CuT BRANCH 6.4CuT FIELD...

  • Page 268: Wiring Diagrams

    SiBE12-712 Wiring Diagrams Wiring Diagrams Indoor Units 2.1.1 Wall Mounted Type FTK(X)S20/25/35D3VMW(L), ATK(X)S20/25/35E2V1B 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 269 Wiring Diagrams SiBE12-712 FTXG25/35EV1BW(S), ATXG25/35EV1B PCB2 LED4 LED3 LED2 SIGNAL RECEIVER GRN / YLW WIRELESS FIELD WIRING. t° REMOTE GRN / YLW CONTROLLER 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 270 SiBE12-712 Wiring Diagrams 2.1.2 Duct Connected Type FDK(X)S25/35CAVMB, FDK(X)S25/35EAVMB PCB1 PCB2 V1TR outdoor 3.15A FIELD WIRING. TERMINAL FOR CAUTION CENTRALIZED CONTROL TRANSMISSION NOTE THAT OPERATION WILL CIRCUIT RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK SIGNAL ON AGAIN.
  • Page 271 Wiring Diagrams SiBE12-712 2.1.4 Floor Standing Type FVXS25/35FV1B PCB3 PCB2 → RECTIFIER S2W(4) 3.15A outdoor GRN/YLW FIELD WIRING. WIRELESS TRANSMISSION REMOTE CAUTION CIRCUIT CONTROLLER NOTE THAT OPERATION WILL PCB4 RESTART AUTOMATICALLY IF SIGNAL THE MAIN POWER SUPPLY IS RECEIVER TURNED OFF AND THEN BACK ON AGAIN.

  • Page 272: Outdoor Units

    SiBE12-712 Wiring Diagrams Outdoor Units 2MKS40FV1B, 2AMK40FV1B indoor PCB1 C100 MRM20 IPM1 ROOM A MRM10 ROOM B 3.15A 3.15A 1C11 MRCW S92 RED S91WHT S20 WHT S21 RED POWER SUPPLY 102°C t° t° t° t° t° t° t° (ROOM-A) (ROOM-A) (OUTDOOR) (DISCHARGE) X11A...

  • Page 273: Sibe12

    Wiring Diagrams SiBE12-712 Appendix...

  • Page 274: Index

    SiBE12-712 Index Numerics defrost control ............84 diagnosis mode ........... 197 3 minutes stand-by ..........80 discharge pipe ............88 discharge pipe temperature ........88 discharge pipe temperature control ....81, 215 A1 .................200 discharge pipe thermistor ....73, 75, 87, 223 A5 ..............201, 208 discharge pressure check ........
  • Page 275 SiBE12-712 fan motor connector output check ......237 INTELLIGENT EYE sensor ......43, 250 fan motor or related abnormality INTELLIGENT EYE sensor PCB ..... 41, 45 AC motor ............203 inverter POWERFUL operation ......70 DC motor ............204 inverter units refrigerant system check ....243 fan speed control ............61 fan speed setting ....40, 42, 44, 46, 48, 51, 249 filter...
  • Page 276 SiBE12-712 S49 ..............44, 51 S51 ................ 44 P4 .................222 S6 .............. 40, 42, 48 photocatalytic deodorizing filter ......71 S7 .............. 42, 46, 48 PI control ..............78 S70 ................ 53 piping diagrams ............252 S80 ................ 53 position sensor abnormality .........219 S90 ................
  • Page 277 SiBE12-712 voltage detection function ........91 WEEKLY TIMER operation ......72, 176 wide-angle louvers ..........58 wiring diagrams ............257 Index...
  • Page 278 SiBE12-712 Drawings & Flow Charts freeze-up protection control ......82, 208 freeze-up protection control or adjusting the angle of the INTELLIGENT EYE sensor high pressure control ........201 ...............250 frequency control ........... 77 anti-icing function in other rooms / unspecified voltage frequency principle ..........
  • Page 279 SiBE12-712 piping diagrams duct connected type ........254 floor / ceiling suspended dual type ....254 floor standing type .........255 outdoor units ..........256 wall mounted type ..........252 position sensor abnormality .........219 power supply PCB ..........49 power supply waveforms check ......242 power transistor check .........244 programme dry function .........62 radiation fin temperature rise .......226 sensor PCB ............52...
  • Page 280 Specifications, designs and other content appearing in this brochure are current as of March 2007 but subject to change without notice. SiBE 12-712 Printed in Japan 03/2007 B AK...

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