Page 1 SiBE12- 817 E-Series [Applied Models] Inverter Multi : Cooling Only Inverter Multi : Heat Pump...
Page 2 SiBE12-817 SUPER MULTI NX E-Series Cooling Only Indoor Unit FTXS20G2V1B FDKS50CVMB FLKS25BAVMB FTXS25G2V1B FDKS25EAVMB FLKS35BAVMB FTXS35G2V1B FDKS35EAVMB FLKS50BAVMB FTXS42G2V1B FVXS25FV1B FTXS50G2V1B FVXS35FV1B FVXS50FV1B FHQ35BVV1B FHQ50BVV1B Outdoor Unit 3MKS50E3V1B 4MKS58E3V1B Heat Pump Indoor Unit FTXG25EV1BW FDXS50CVMB FLXS25BAVMB FTXG25EV1BS FDXS25EAVMB FLXS35BAVMB FTXG35EV1BW...
Page 3: Table Of Contents
SiBE12-817 1. Introduction .....................v 1.1 Safety Cautions ..................v 1.2 Used Icons ....................ix Part 1 List of Functions ..............1 1. List of Functions ..................2 1.1 Cooling Only Models ................2 1.2 Heat Pump Models...................6 Part 2 Specifications ..............11 1. Specifications ..................12 1.1 Indoor Units - Cooling Only ..............12 1.2 Outdoor Units - Cooling Only ..............18 1.3 Indoor Units - Heat Pump...............19...
Page 4 SiBE12-817 3.5 Input Current Control................74 3.6 Freeze-up Protection Control ..............75 3.7 Heating Peak-cut Control ...............75 3.8 Fan Control.....................76 3.9 Liquid Compression Protection Function 2..........76 3.10 Defrost Control ..................77 3.11 Electronic Expansion Valve Control ............78 3.12 Malfunctions ...................82 3.13 Forced Operation Mode .................83 3.14 Wiring-Error Check.................84 3.15 Additional Function.................86 Part 5 Operation Manual .............
Page 5 SiBE12-817 5.21 Thermistor or Related Abnormality (Outdoor Unit).......226 5.22 Electrical Box Temperature Rise............228 5.23 Radiation Fin Temperature Rise ............230 5.24 Output Over Current Detection.............232 5.25 Insufficient Gas..................234 5.26 Low-voltage Detection or Over-voltage Detection........236 5.27 Signal Transmission Error (on Outdoor Unit PCB).......237 5.28 Anti-icing Function in Other Rooms / Unspecified Voltage (between Indoor and Outdoor Units) ............238 6.
Page 6: Introduction
SiBE12-817 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 SiBE12-817 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 SiBE12-817 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 SiBE12-817 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
SiBE12-817 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 SiBE12-817...
Page 12: Part 1 List Of Functions
SiBE12-817 Part 1 List of Functions 1. List of Functions ..................2 1.1 Cooling Only Models ................2 1.2 Heat Pump Models...................6 List of Functions...
Page 13: List Of Functions
List of Functions SiBE12-817 1. List of Functions Cooling Only Models Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — Function Clean Operation Limit for Cooling (°CDB) — Operation Limit for Heating (°CWB) —...
Page 14 SiBE12-817 List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
Page 15 List of Functions SiBE12-817 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 SiBE12-817 List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — Function Clean –10 Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
Page 17: Heat Pump Models
List of Functions SiBE12-817 Heat Pump Models Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — — — Function Clean Operation Limit for Cooling (°CDB) — — — Operation Limit for Heating (°CWB) —...
Page 18 SiBE12-817 List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
Page 19 List of Functions SiBE12-817 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 20 SiBE12-817 List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — Function Clean –10 Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — –15 Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
Page 21 List of Functions SiBE12-817 List of Functions...
Page 22: Part 2 Specifications
SiBE12-817 Part 2 Specifications 1. Specifications ..................12 1.1 Indoor Units - Cooling Only ..............12 1.2 Outdoor Units - Cooling Only ..............18 1.3 Indoor Units - Heat Pump...............19 1.4 Outdoor Units - Heat Pump ..............26 Specifications...
Page 23: Specifications
Specifications SiBE12-817 Specifications Indoor Units - Cooling Only Wall Mounted Type 50Hz 230V Model FTXS20G2V1B FTXS25G2V1B Rated Capacity 2.0kW Class 2.5kW Class Front Panel Color White White 9.4 (332) 9.1 (321) 7.4 (262) 7.1 (252) m³/min Airflow Rates (cfm) 5.5 (193) 5.2 (182) 4.0 (141) 3.7 (130)
Page 24 SiBE12-817 Specifications 50Hz 230V Model FTXS50G2V1B Rated Capacity 5.0kW Class Front Panel Color White 10.2 (360) 8.6 (305) m³/min Airflow Rates (cfm) 7.0 (246) 6.0 (212) Type Cross Flow Fan Motor Output Speed Steps 5 Steps, Quiet, Auto Air Direction Control Right, Left, Horizontal, Downward Air Filter Removable / Washable / Mildew Proof...
Page 25 Specifications SiBE12-817 Duct Connected Type 50Hz 230V Model FDKS50CVMB Rated Capacity 5.0kW Class — Front Panel Color 12.0 (424) 11.0 (388) m³/min Airflow Rates (cfm) 10.0 (353) 8.4 (297) Type Sirocco Fan Motor Output Speed Steps 5 Steps, Quiet, Auto Air Filter Removable-Washable-Mildew Proof Running Current (Rated)
Page 26 SiBE12-817 Specifications 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 Airflow Rates (cfm) 6.0 (212) 6.6 (233) 5.2 (184) 5.6 (198)
Page 27 Specifications SiBE12-817 Floor Standing Type 50Hz 230V Model FVXS25FV1B FVXS35FV1B Rated Capacity 2.5kW Class 3.5kW Class Front Panel Color White White 8.2 (290) 8.5 (300) 6.5 (229) 6.7 (237) m³/min Airflow Rates (cfm) 4.8 (169) 4.9 (174) 4.1 (146) 4.5 (158) Type Turbo Fan Turbo Fan...
Page 28 SiBE12-817 Specifications Ceiling Suspended Type 50Hz 230V Model FHQ35BVV1B FHQ50BVV1B Rated Capacity 3.5kW Class 5.0kW Class Color White White Decoration Panel Dimensions (H×W×D) — — 13.0 (458) 13.0 (458) — — m³/min Airflow Rates (cfm) 10.0 (353) 10.0 (353) — —...
Page 29: Outdoor Units - Cooling Only
Specifications SiBE12-817 Outdoor Units - Cooling Only 50Hz 230V Model 3MKS50E3V1B 4MKS58E3V1B — — Cooling Capacity — — Power Consumption — — Running Current Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Compressor Model 2YC36BXD 2YC36BXD...
Page 30: Indoor Units - Heat Pump
SiBE12-817 Specifications Indoor Units - Heat Pump Wall Mounted Type 50Hz 230V FTXG25EV1BW FTXG25EV1BS Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 2.5kW Class Front Panel Color Mat Crystal White Mat Crystal Silver 7.7 (271) 9.0 (317) 7.7 (271) 9.0 (317) 6.1 (215) 7.9 (278)
Page 31 Specifications SiBE12-817 50Hz 230V CTXG50EV1BW CTXG50EV1BS Model Cooling Heating Cooling Heating Rated Capacity 5.0kW Class 5.0kW Class Front Panel Color Mat Crystal White Mat Crystal Silver 11.3 (398) 12.6 (444) 11.3 (398) 12.6 (444) 9.1 (320) 10.6 (373) 9.1 (320) 10.6 (373) m³/min Airflow Rates...
Page 32 SiBE12-817 Specifications 50Hz 230V FTXS35G2V1B FTXS42G2V1B Model Cooling Heating Cooling Heating Rated Capacity 3.5kW Class 4.2kW Class Front Panel Color White White 10.7 (367) 10.6 (374) 9.1 (321) 11.2 (395) 7.7 (270) 8.5 (302) 7.7 (273) 9.4 (333) m³/min Airflow Rates (cfm) 4.8 (170) 6.4 (226)
Page 33 Specifications SiBE12-817 Duct Connected Type 50Hz 230V FDXS50CVMB Model Cooling Heating Rated Capacity 5.0kW Class — Front Panel Color 12.0 (424) 12.0 (424) 11.0 (388) 11.0 (388) m³/min Airflow Rates (cfm) 10.0 (353) 10.0 (353) 8.4 (297) 8.4 (297) Type Sirocco Fan Motor Output Speed...
Page 34 SiBE12-817 Specifications 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 35 Specifications SiBE12-817 50Hz 230V Floor Standing Type 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 Airflow Rates (cfm)
Page 36 SiBE12-817 Specifications Ceiling Suspended Type 50Hz 230V FHQ35BVV1B FHQ50BVV1B Model Cooling Heating Cooling Heating Rated Capacity 3.5kW Class 5.0kW Class Color White White Decoration Panel Dimensions (H×W×D) — — 13.0 (458) 13.0 (458) 13.0 (458) 13.0 (458) — — m³/min Airflow Rates (cfm) 10.0 (353)
Page 37: Outdoor Units - Heat Pump
Specifications SiBE12-817 Outdoor Units - Heat Pump 50Hz 230V 3MXS52E3V1B Model Cooling Heating — Cooling Capacity — Power Consumption — Running Current Casing Color Ivory White Type Hermetically Sealed Swing Type Compressor Model 2YC36BXD Motor Output 1,100 Model FVC50K Refrigerant Oil Charge 0.65 Type...
Page 38: Part 3 Printed Circuit Board Connector Wiring Diagram
SiBE12-817 Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........28 1.1 Wall Mounted Type ................28 1.2 Duct Connected Type................32 1.3 Floor / Ceiling Suspended Dual Type.............34 1.4 Floor Standing Type ................37 1.5 Ceiling Suspended Type ................39 1.6 Outdoor Units ..................41 Printed Circuit Board Connector Wiring Diagram...
Page 39: Printed Circuit Board Connector Wiring Diagram
Printed Circuit Board Connector Wiring Diagram SiBE12-817 Printed Circuit Board Connector Wiring Diagram Wall Mounted Type 1.1.1 FTXS20~50G Connectors PCB(1) (Control PCB) Connector for DC fan motor Connector for centralized control (HA) Connector for INTELLIGENT EYE sensor PCB Connector for heat exchanger thermistor Connector for swing motor Connector for display PCB Connector for signal receiver PCB...
Page 40 SiBE12-817 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB LED A S47 JC JB S21 2P206687 PCB(2): Signal Receiver PCB PCB(3): Display PCB RTH1 LED3 LED2 LED1 (R8246) (R8247) PCB(4): INTELLIGENT EYE sensor PCB 3EB86013 Printed Circuit Board Connector Wiring Diagram...
Page 41 Printed Circuit Board Connector Wiring Diagram SiBE12-817 1.1.2 FTXG25~35E, CTXG50E 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) Connector for front panel limit switch...
Page 42 SiBE12-817 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB (indoor unit) JA JC LED A (R4991) PCB(2): Signal Receiver PCB RTH1 LED4 LED2 LED3 (R4992) PCB(3): INTELLIGENT EYE sensor PCB (R4988) Printed Circuit Board Connector Wiring Diagram...
Page 43: Duct Connected Type
Printed Circuit Board Connector Wiring Diagram SiBE12-817 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 44 SiBE12-817 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (2): Display PCB 2P084375 Printed Circuit Board Connector Wiring Diagram...
Page 45: Floor / Ceiling Suspended Dual Type
Printed Circuit Board Connector Wiring Diagram SiBE12-817 Floor / Ceiling Suspended Dual Type Connectors PCB(1) (Control PCB) Connector for swing motor (horizontal swing) Connector for AC 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 46 SiBE12-817 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 47 Printed Circuit Board Connector Wiring Diagram SiBE12-817 PCB (3): Display PCB PCB (4): Signal Receiver PCB EX511 REV 12 PHOTO 2P084377- 1 S31(RTH) (R6057) Printed Circuit Board Connector Wiring Diagram...
Page 48: Floor Standing Type
SiBE12-817 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 49 Printed Circuit Board Connector Wiring Diagram SiBE12-817 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 50: Ceiling Suspended Type
SiBE12-817 Printed Circuit Board Connector Wiring Diagram Ceiling Suspended Type Connectors Connector for Terminal Strip (for Wired Remote Controller) X14A Connector for Limit Switch (for Swing Flap) X15A Connector for Drain Pump (Optional Accessory) X17A Connector for Heat Exchanger Thermistor (2) X18A Connector for Heat Exchanger Thermistor (1) X19A...
Page 51 Printed Circuit Board Connector Wiring Diagram SiBE12-817 PCB Detail Capacity setting adaptor X19A X18A X40A X15A X14A X17A X61A X35A X60A X33A (Service monitor LED) X24A X26A X27A X29A X20A X25A 2P095007 Printed Circuit Board Connector Wiring Diagram...
Page 52: Outdoor Units
SiBE12-817 Printed Circuit Board Connector Wiring Diagram Outdoor Units Connectors PCB(1)(Main PCB) Connector for terminal strip (indoor-outdoor transmission) Connector for COOL / HEAT mode lock Connector for electronic expansion valve coil A port (white) Connector for electronic expansion valve coil B port (red) Connector for electronic expansion valve coil C port (blue) Connector for electronic expansion valve coil D port (yellow) 7) S40...
Page 53 Printed Circuit Board Connector Wiring Diagram SiBE12-817 PCB Detail PCB(1): Main PCB FU2(3.15A) (30A) S101 FU3(3.15A) (R6041) PCB(2): Service Monitor PCB Printed Circuit Board Connector Wiring Diagram...
Page 54: Part 4 Function And Control
SiBE12-817 Part 4 Function and Control 1. Main Functions..................44 1.1 Frequency Principle................44 1.2 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing ..46 1.3 Operation Starting Control..............48 1.4 Fan Speed Control for Indoor Units............49 1.5 Programme Dry Function ...............50 1.6 Automatic Operation................51 1.7 Thermostat Control.................52 1.8 Night Set Mode..................53 1.9 ECONO Mode ..................54...
Page 55: Main Functions
Main Functions SiBE12-817 1. Main Functions Note: See the list of functions for the functions applicable to different models. Frequency Principle Main Control The compressor is frequency-controlled during normal operation. The target frequency is set by the following 2 parameters coming from the operating indoor unit: Parameters The load condition of the operating indoor unit The difference between the room temperature and the set temperature...
Page 56 SiBE12-817 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 57: Power-Airflow Dual Flaps, Wide Angle Louvers And Auto-Swing
Main Functions SiBE12-817 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing Power-airflow The large flaps send a large volume of air downwards to the floor. The flap provides an optimum control area in cooling, heating and dry mode. Dual Flaps Heating Mode During heating mode, the large flap enables direct warm air straight downwards.
Page 58 SiBE12-817 Main Functions FTXS20-50G The vertical swing flap is controlled not to blow the air directly on the person in the room. The airflow rate is controlled automatically within the following steps. Cooling: L tap – MH tap (same as AUTOMATIC) Heating: Equivalent to ML tap –...
Page 59: Operation Starting Control
Main Functions SiBE12-817 Operation Starting Control FTXG25-35E, CTXG50E The system carries out the following control at the beginning to conduct every functional parts properly. 1. Opening the front panel fully 2. Output of the ∆ D signal after the front panel starts moving 3.
Page 60: Fan Speed Control For Indoor Units
SiBE12-817 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 61: Programme Dry Function
Main Functions SiBE12-817 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 62: Automatic Operation
SiBE12-817 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 63: Thermostat Control
Main Functions SiBE12-817 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 64: Night Set Mode
SiBE12-817 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 65: Econo Mode
Main Functions SiBE12-817 ECONO Mode Outline FTXS20-50G, FVXS25-50F The "ECONO mode" reduces the maximum operating current and power consumption by approx. 30% during start up etc.. This mode is particularly convenient for energy-saving-oriented users. It is also a major bonus for those whose breaker capacities do not allow the use of multiple electrical devices and air conditioners.
Page 66: Intelligent Eye (Ftxg, Ctxg)
SiBE12-817 Main Functions 1.10 INTELLIGENT EYE (FTXG, CTXG) 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 67 Main Functions SiBE12-817 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 68: Area Intelligent Eye
SiBE12-817 Main Functions 1.11 2 AREA INTELLIGENT EYE The following functions can be performed by a human motion sensor (INTELLIGENT EYE). 1. Reduces the capacity when there is no human in the room in order to save electricity. (energy saving operation) 2.
Page 69 Main Functions SiBE12-817 2. The motions in energy saving operation (for example: in cooling) within 20 minutes. 20 min. 20 min. Human detection signal RESET. (From area A or B) Cooling : Set temp. + 2˚C Heating : Set temp. - 2˚C Set temp.
Page 70: Home Leave Operation
SiBE12-817 Main Functions 1.12 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 71: Inverter Powerful Operation
Main Functions SiBE12-817 1.13 Inverter POWERFUL Operation Outline In order to exploit the cooling and heating capacity to full extent, operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency. Details of the When POWERFUL button is pushed in each operation mode, the fan speed / setting temperature will be converted to the following states in a period of 20 minutes.
Page 72: Other Functions
SiBE12-817 Main Functions 1.14 Other Functions 1.14.1 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 73 Main Functions SiBE12-817 1.14.4 Titanium Apatite Photocatalytic Air-Purifying Filter For FTXS20-50G, FVXS25-50F, FTXG25/35E, CTXG50E This filter combines the Air Purifying Filter and Titanium Apatite Photocatalytic Deodorizing Filter in a single highly effective unit. The filter traps microscopic particles, decompose odours and even deactivates bacteria and viruses.
Page 74: Function Of Main Structural Parts
SiBE12-817 Function of Main Structural Parts 2. Function of Main Structural Parts Main Structural Parts Heat Pump Model Expansion valve Four way valve (R5066) Compressor Cooling Only Model Expansion valve Compressor (R4596) Note: Expansion Valve : In Case of 3 port model..EVA-C, 4 port model..EVA-D Function and Control...
Page 75: Function Of Thermistor
Function of Main Structural Parts SiBE12-817 Function of Thermistor 2.2.1 Heat Pump Model Expansion valve Four way valve Compressor (R5067) A Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. 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 76 SiBE12-817 Function of Main Structural Parts D Indoor Heat 1. The indoor heat exchanger thermistors are used for controlling target discharge temperature. Exchanger The system sets a target discharge pipe temperature according to the outdoor and indoor Thermistor heat exchanger temperature, and controls the electronic expansion valve opening so that the target discharge temperature can be obtained.
Page 77 Function of Main Structural Parts SiBE12-817 2.2.2 Cooling Only Model Expansion valve Compressor (R4601) A Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. Exchanger The system sets a target discharge temperature according to the outdoor and indoor heat exchanger temperature, and controls the electronic expansion valve opening so that the Thermistor target discharge temperature can be obtained.
Page 78 SiBE12-817 Function of Main Structural Parts D Indoor Heat 1. The indoor heat exchanger thermistors are used for controlling target discharge temperature. Exchanger The system sets a target discharge pipe temperature according to the outdoor and indoor Thermistor heat exchanger temperature, and controls the electronic expansion valve opening so that the target discharge temperature can be obtained.
Page 79: Control Specification
Control Specification SiBE12-817 3. Control Specification Mode Hierarchy Outline There are two modes; the mode selected in user’s place (normal air conditioning mode) and forced operation mode for installation and providing service. Detail 1. For heat pump model There are following modes; stop, cooling (includes drying), heating (include defrosting) Air conditioner control mode Forced operating mode Forced cooling...
Page 80: Frequency Control
SiBE12-817 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 81 Control Specification SiBE12-817 2. Determine upper limit frequency Set a minimum value as an upper limit frequency among the frequency upper limits of the following functions: Compressor protection, input current, discharge pipes, freeze-up protection, dew prevention, fin thermistor temperature. 3. Determine lower limit frequency Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions: Pressure difference upkeep.
Page 82 SiBE12-817 Control Specification 5. Upper and lower limit of frequency by PI control The frequency upper and lower limits are set depending on the total of S values of a room. When low noise commands come from the indoor unit more than one room or when outdoor unit low noise or quiet commands come from all the rooms, the upper limit frequency must be lowered than the usual setting.
Page 83: Controls At Mode Changing / Start-Up
Control Specification SiBE12-817 Controls at Mode Changing / Start-up 3.3.1 Preheating Operation Outline Operate the inverter in the open phase operation with the conditions including the preheating command from the indoor, the outdoor air temperature and discharge pipe temperature. The power consumption of preheating operation is 35W. (The total power consumption depends on the number of the indoor units.) Detail Preheating ON Condition...
Page 84 SiBE12-817 Control Specification 3.3.5 Compressor Protection Function When turning the compressor from OFF to ON, the upper limit of frequency must be set as follows. (The function must not be used when defrosting (only for heat pump model).) 2YC36 FCG 3 FCG 2 FCG 1 Function and Control...
Page 85: Discharge Pipe Temperature Control
Control Specification SiBE12-817 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 Zones (typical value) Management within the Zone...
Page 86: Freeze-Up Protection Control
SiBE12-817 Control Specification Freeze-up Protection Control Outline During cooling operation, the signals being sent from the indoor unit allow the operating frequency limitation and then prevent freezing of the indoor heat exchanger. Detail Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 sec from operation start and after 30 sec from changing number of operation room.
Page 87: Fan Control
Control Specification SiBE12-817 Fan Control Outline Fan control is carried out according to the following conditions. 1. Fan ON control for electric component cooling fan 2. Fan control when defrosting 3. Fan OFF delay when stopped 4. ON/OFF control when cooling operation 5.
Page 88: Defrost Control
SiBE12-817 Control Specification 3.10 Defrost Control Outline Heat Pump Only Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor heat exchanger temperature must be more than its fixed value when finishing. Detail Conditions for Starting Defrost Under the conditions that the system is in heating operation, 6 minutes after the compressor is started and more than 38 minutes of accumulated time pass since the start of the operation or ending the defrosting.
Page 89: Electronic Expansion Valve Control
Control Specification SiBE12-817 3.11 Electronic Expansion Valve Control Outline The following items are included in the electronic expansion valve control. Electronic expansion valve is fully closed 1. Electronic expansion valve is fully closed when turning on the power. 2. Pressure equalizing control Room Distribution Control 1.
Page 90 SiBE12-817 Control Specification Detail The followings are the examples of control which function in each mode by the electronic expansion valve control. Operation pattern : function × : not function When power is turned ON × × × × × ×...
Page 91 Control Specification SiBE12-817 3.11.1 Fully Closing with Power ON Initialize the electronic expansion valve when turning on the power, set the opening position and develop pressure equalizing. The electronic expansion valves are closed further with 720 pulse, and then opened with 150 pulse.
Page 92 SiBE12-817 Control Specification 3.11.7 Disconnection of the Discharge Pipe Thermistor Outline Detect a disconnected discharge pipe thermistor by comparing the discharge pipe temperature with the condensation temperature. If any is disconnected, open the electronic expansion valve according to the outdoor air temperature and the operating frequency and operate for a specified time, and then stop.
Page 93: Malfunctions
Control Specification SiBE12-817 3.12 Malfunctions 3.12.1 Sensor Malfunction Detection Sensor malfunction may occur either in the thermistor or current transformer (CT) system. Relating to Thermistor Malfunction 1. Outdoor heat exchanger thermistor 2. Discharge pipe thermistor 3. Fin thermistor 4. Gas pipe thermistor 5.
Page 94: Forced Operation Mode
SiBE12-817 Control Specification Detail Judgment by Input Current When an output frequency is exceeds 54 Hz and the input current is less than specified value, the adjustment is made for insufficient gas. Judgment by Discharge Pipe Temperature When discharge pipe temperature is 20°C higher than target value and the electronic expansion value opening is 450 plus (max.), the adjustment is made for insufficient gas.
Page 95: Wiring-Error Check
Control Specification SiBE12-817 3.14 Wiring-Error Check Outline The convenient Wiring Error Check function is designed for the microcomputer to correct wiring errors itself. If local wiring is unclear in the case of buried piping, for example, just press the wiring error check switch that is behind the right-hand panel of the outdoor unit.
Page 96 SiBE12-817 Control Specification Checking the Those data can be checked by looking at the service monitor LED indicators, when the wiring error checking is over, during forced operation, at the stop of the system. current setting The LED indicators stop flashing when the forced operation is over. data on the LED1…Room A wiring, LED2…Room B wiring microcomputer...
Page 97: Additional Function
Control Specification SiBE12-817 3.15 Additional Function 3.15.1 Connection Pipe Condensation Preventing Function This control is intended to adjust the electronic expansion valve opening so that the outdoor unit gas pipe temperature (GDN) be kept below 8°C. 3.15.2 Priority Room Setting Electronic expansion valves are controlled to provide the unit designated as the priority room with the capacity of other room units.
Page 98 SiBE12-817 Control Specification 3.15.4 Cooling / Heating Mode Lock Use the S15 connector to set the unit to only cool or heat. Setting to only heat (H): Short-circuit pins 1 and 3 of the connector <S15>. Setting to only cool (C): short-circuit pins 3 and 5 of the connector <S15>. The following specifications apply to the connector housing and pins.
Page 99 Control Specification SiBE12-817 Function and Control...
Page 100: Part 5 Operation Manual
SiBE12-817 Part 5 Operation Manual 1. System Configuration................90 1.1 Operation Instructions ................90 2. Instruction....................91 2.1 FTXG, CTXG, FDK(X)S, FLK(X)S Series ..........91 2.2 FTXS, FVXS Series................133 2.3 FHQ Series...................175 Operation Manual...
Page 101: System Configuration
System Configuration SiBE12-817 1. System Configuration Operation Instructions After the installation and test operation of the room air conditioner have been completed, it should be operated and handled as described below. Every user would like to know the correct method of operation of the room air conditioner, to check if it is capable of cooling (or heating) well, and to know a clever method of using it.
Page 102: Instruction
SiBE12-817 Instruction Instruction FTXG, CTXG, FDK(X)S, FLK(X)S Series 2.1.1 Manual Contents and Reference Page Wall Mounted Type Model Series FTXG25/35E CTXG50E Read Before Operation Safety Precautions Names of Parts Preparation Before Operation ★ 1 Operation AUTO, DRY, COOL, HEAT, FAN Operation ★...
Page 103 • 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. • Do not insert fingers, poles, or other objects into the moving parts of the front panel or the outlet vent panel.
Page 104 SiBE12-817 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 105 Instruction SiBE12-817 2.1.3 Name of Parts FTXG 25/35 E, CTXG 50 E Names of parts Indoor Unit (With the panel closed) Operation Manual...
Page 106 SiBE12-817 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 107 Instruction SiBE12-817 Remote Controller < ARC433B41 > 1. Signal transmitter: 8. QUIET button: OUTDOOR UNIT QUIET operation • It sends signals to the indoor unit. 9. FAN setting button: 2. Display: • It selects the air flow rate setting. • It displays the current settings. 10.
Page 108 SiBE12-817 Instruction FDK(X)S 50 C, FDK(X)S 25/35 E Names of parts Indoor Unit Operation Manual...
Page 109 Instruction SiBE12-817 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 110 SiBE12-817 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 111 Instruction SiBE12-817 FLK(X)S 25/35/50 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 112 SiBE12-817 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 113 Instruction SiBE12-817 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 114 SiBE12-817 Instruction 2.1.4 Preparation Before Operation Preparation Before Operation To set the batteries Position 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 115 Instruction SiBE12-817 Preparation Before Operation To operate the remote controller • To use the remote controller, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote controller, such as a curtain, the unit will not operate.
Page 116 SiBE12-817 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 117 Instruction SiBE12-817 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.
Page 118 SiBE12-817 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 119 Instruction SiBE12-817 2.1.6 Adjusting the Airflow Direction FTXG 25/35 E, CTXG 50 E Adjusting the Airflow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button ”. • “ ”...
Page 120 SiBE12-817 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 121 Instruction SiBE12-817 FLK(X)S 25/35/50 B Adjusting the Airflow 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 122 SiBE12-817 Instruction To adjust the vertical blades (louvers) • When adjusting the louver, use a robust and stable stool and watch your steps carefully. Hold the knob and move the louvers. (You will find a knob on the left side and the right side blades.) Notes on flap and louvers angles.
Page 123 Instruction SiBE12-817 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 124 SiBE12-817 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 convenient during night. To start OUTDOOR UNIT QUIET operation 1.
Page 125 Instruction SiBE12-817 2.1.9 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 126 SiBE12-817 Instruction What’s the HOME LEAVE operation? Is there a set temperature and air flow rate which is most comfortable, a set temperature and air flow rate which you use the most? HOME LEAVE operation is a function that allows you to record your favor- ite set temperature and air flow rate.
Page 127 Instruction SiBE12-817 2.1.10 INTELLIGENT EYE Operation INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ” is displayed on the LCD. To cancel the INTELLIGENT EYE operation 1, 2...
Page 128 SiBE12-817 Instruction “INTELLIGENT EYE” is useful for Energy Saving Energy saving operation • Change the temperature –2°C in heating / +2°C in cooling / +2°C in dry mode from set temperature. • Decrease the air flow rate slightly in fan operation. (In FAN mode only) Notes on “INTELLIGENT EYE”...
Page 129 Instruction SiBE12-817 2.1.11 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 130 SiBE12-817 Instruction To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. 1. Press “ON TIMER button”. is displayed. blinks. 2. Press “TIMER Setting button” until the time setting reaches the point you like.
Page 131 Instruction SiBE12-817 2.1.12 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 132 SiBE12-817 Instruction Note for Multi System Priority Room Setting The Priority Room Setting requires initial programming during installation. Please consult your retailer or dealer for assistance. The room designated as the Priority Room takes priority in the following situations; 1. 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 133 Instruction SiBE12-817 2.1.13 Care and Cleaning FTXG 25/35 E, CTXG 50 E CARE Care and Cleaning • Before cleaning, be sure to stop the operation and turn the breaker OFF. CAUTION • 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 134 SiBE12-817 Instruction 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 135 Instruction SiBE12-817 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 136 SiBE12-817 Instruction FDK(X)S 50 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 137 • The suction grille is option. • Do not use water or air of 50˚C or higher for cleaning air filters and outside panels. • Ask your DAIKIN dealer how to clean it. Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded.
Page 138 SiBE12-817 Instruction FLK(X)S 25/35/50 Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. Front panel 1. Open the front panel. •...
Page 139 Instruction SiBE12-817 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 140 SiBE12-817 Instruction Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded. Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation. •...
Page 141 Instruction SiBE12-817 2.1.14 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 142 SiBE12-817 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 143 Instruction SiBE12-817 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 144: Ftxs, Fvxs Series
SiBE12-817 Instruction FTXS, FVXS Series 2.2.1 Manual Contents and Reference Page Wall Mounted Type Floor Standing Type Model Series FTXS20-50G FVXS25-50F Read Before Operation Safety Precautions Names of Parts Preparation Before Operation ★ 1 Operation AUTO, DRY, COOL, HEAT, FAN Operation ★...
Page 145 • 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 146 SiBE12-817 Instruction • Do not block air inlets nor outlets. Impaired airflow 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 147 Instruction SiBE12-817 2.2.3 Names of Parts FTXS 20/25/35/42/50 G Names of parts Indoor Unit Operation Manual...
Page 148 SiBE12-817 Instruction Outdoor Unit 20/25/35/42 class 50 class 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 149 Instruction SiBE12-817 Remote Controller <Open the front cover> <ARC452A3> 1. Signal transmitter: 11. SWING button: • It sends signals to the indoor unit. • Vertical blades (louvers) 2. Display: 12. COMFORT/SENSOR button: • It displays the current settings. • COMFORT AIRFLOW and INTELLIGENT (In this illustration, each section is shown EYE operation with all its displays ON for the purpose of...
Page 150 SiBE12-817 Instruction FVXS 25/35/50 F Names of parts Indoor Unit Opening the Front Panel How to open the front panel: Air outlet selection switch • This setting blows air from upper outlet only. This setting automatically decides a blow • pattern depending on mode and conditions.
Page 151 Instruction SiBE12-817 Outdoor Unit 25/35 class 50 class Indoor Unit • The operation mode refers to the following 1. Titanium Apatite Photocatalytic Air-Purifying Filter: table. • These filters are attached to the inside of Temperature Airflow Model Mode the air filters. setting rate 2.
Page 152 SiBE12-817 Instruction Remote Controller <Open the lid> <ARC452A1> 1. Signal transmitter: 9. ECONO button: • It sends signals to the indoor unit. ECONO operation 10. SWING button: 2. Display: • Adjusting the Airflow Direction • It displays the current settings. (In this illustration, each section is shown 11.
Page 153 Instruction SiBE12-817 2.2.4 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 154 SiBE12-817 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 155 Instruction SiBE12-817 Turn the breaker ON • Turning ON the breaker opens once and closes the flaps. (This is a normal procedure.) Checks on Remote Controller Settings • This remote controller is common to the heat pump model and cooling only model. Use the dipswitches on the remote controller to set the heat pump model or cooling only model.
Page 156 SiBE12-817 Instruction 2.2.5 AUTO • DRY • COOL • HEAT • FAN Operation OPERATION AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode.
Page 157 Instruction SiBE12-817 To change the airflow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode Five levels of airflow rate setting from “ ” to “ ” plus “ ” “ ” are available. The airflow rate setting is not variable.
Page 158 SiBE12-817 Instruction 2.2.6 Adjusting the Airflow Direction FTXS 20/25/35/42/50 G Adjusting the Airflow Direction You can adjust the airflow 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 159 Instruction SiBE12-817 To start 3-D Airflow 1. 3. Press the “SWING button ” and the “SWING button ”: the “ ” and “ ” display will light up and the flap and louvers will move in turn. To cancel 3-D Airflow 2.
Page 160 SiBE12-817 Instruction FVXS 25/35/50 F Adjusting the Airflow Direction You can adjust the airflow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button ”. • “ ” is displayed on the LCD and the flaps will begin to swing.
Page 161 Instruction SiBE12-817 Airflow selection • Make airflow selection according to what suits you. When setting the airflow selection switch to • Air conditioner automatically decides the appropriate blowing pattern depending on the operating mode/situation. Operating mode Situation Blowing pattern • When the room has become fully •...
Page 162 SiBE12-817 Instruction 2.2.7 COMFORT AIRFLOW and INTELLIGENT EYE Operation COMFORT AIRFLOW and INTELLIGENT EYE Operation The INTELLIGENT EYE incorporates infrared sensors to detect the presence of people in the conditioned room. When these sensors detect people, the louvers will adjust the airflow direction to an area where people are not present.
Page 163 Instruction SiBE12-817 Notes on “COMFORT AIRFLOW Operation” • The flap position will change, preventing air from blowing directly on the occupants of the room. • POWERFUL operation and COMFORT AIRFLOW operation cannot be used at the same time. • The volume of air will be set to AUTO. If the upward and downward airflow direction is selected, the COMFORT AIRFLOW function will be canceled.
Page 164 SiBE12-817 Instruction COMFORT AIRFLOW and INTELLIGENT EYE Operation Notes on “INTELLIGENT EYE Operation” • While the air conditioner is in INTELLIGENT EYE operation, the louvers will adjust the airflow direction if there are people in the sensing areas of the INTELLIGENT EYE so that the leftward or rightward airflow will not be directed to the people.
Page 165 Instruction SiBE12-817 2.2.8 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 previous settings which were used before POWERFUL operation.
Page 166 SiBE12-817 Instruction 2.2.9 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 167 Instruction SiBE12-817 2.2.10 ECONO Operation ECONO Operation ECONO operation is a function which enables efficient operation by limiting the maximum power consumption value. This function is useful for cases in which attention should be paid to ensure a circuit breaker will not trip when the product runs alongside other appliances.
Page 168 SiBE12-817 Instruction 2.2.11 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 169 Instruction SiBE12-817 To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. 1. Press “ON TIMER button”. is displayed. blinks. 2. Press “SELECT button” until the time setting reaches the point you like.
Page 170 SiBE12-817 Instruction 2.2.12 WEEKLY TIMER Operation WEEKLY TIMER Operation Up to 4 timer settings can be saved for each day of the week. It is convenient if the WEEKLY TIMER is set according to the family’s life style. Using in these cases of WEEKLY TIMER An example of WEEKLY TIMER settings is shown below.
Page 171 Instruction SiBE12-817 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. Program 1 Program 2 Program 3 Program 4 [Monday] 25˚C 27˚C 6:00 8:30 17:30...
Page 172 SiBE12-817 Instruction WEEKLY TIMER Operation 8. Press “SELECT button” to select the desired temperature. • The temperature can be set between 10˚C and 32˚C. Cooling: The unit operates at 18˚C even if it is set at 10 to 17˚C. Heating: The unit operates at 30˚C even if it is set at 31 to 32˚C.
Page 173 Instruction SiBE12-817 Using copy mode • A reservation made once can be easily copied and the same settings used for another day of the week. Program 1 Program 2 Program 3 Program 4 [Monday] 25˚C 27˚C 6:00 8:30 17:30 22:00 COPY Program 1 Program 2 Program 3...
Page 174 SiBE12-817 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 175 Instruction SiBE12-817 2.2.13 Note for Multi System Note for Multi System << >> What is a “Multi System”? This system has one outdoor unit connected to multiple indoor units. room room Outdoor unit room room Selecting the operation mode Living Living room room...
Page 176 SiBE12-817 Instruction Note for Multi System Priority Room Setting The Priority Room Setting requires initial programming during installation. Please consult your retailer or dealer for assistance. The room designated as the Priority Room takes priority in the following situations; 1. 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 177 Instruction SiBE12-817 2.2.14 Care and Cleaning FTXS 20/25/35/42/50 G CARE Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. Front panel 1.
Page 178 SiBE12-817 Instruction Filters 1. Open the front panel. 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the Titanium Apatite Photocatalytic Air-Purifying Filter. •...
Page 179 Instruction SiBE12-817 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 180 SiBE12-817 Instruction FVXS 25/35/50 F CARE Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. Front panel 1.
Page 181 Instruction SiBE12-817 Filters 1. Open the front panel. 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 182 SiBE12-817 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 183 Instruction SiBE12-817 2.2.15 Troubleshooting Trouble Shooting These cases are not troubles. The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Explanation Operation does not start soon. • This is to protect the air conditioner. You should wait for about 3 minutes.
Page 184 SiBE12-817 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 185 Instruction SiBE12-817 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 186: Fhq Series
SiBE12-817 Instruction FHQ Series Operation Manual...
Page 187 If your installation has a customized control system, 1. WHAT TO DO BEFORE OPERATION ask your Daikin dealer for the operation that corre- sponds to your system. This operation manual is for the following systems • Heat pump type with standard control.
Page 188 Contact your Daikin Dealer and verify which Continued operation under such circumstances outdoor unit you have. may result in a failure, electric shock, and fire.
Page 189 Instruction SiBE12-817 Be sure to install an earth leakage breaker. The appliance is not intended for use by young Failure to install an earth leakage breaker may children or infirm persons without supervision. result in electric shocks, or fire. Young children should be supervised to Consult the dealer if the air conditioner sub- ensure that they do not play with the appliance.
Page 190: Operation Range
SiBE12-817 Instruction HEATING 3. OPERATION RANGE INDOOR OUTDOOR OUTDOOR If the temperature or the humidity is beyond the fol- TEMPERA- UNIT TEMPERATURE lowing conditions, safety devices may work and the TURE air conditioner may not operate, or sometimes, – 9 to 21 water may drop from the indoor unit.
Page 191 Instruction SiBE12-817 Regarding wiring DISPLAY “ ” “ ” “ ” “ ” • All wiring must be performed by an authorized (VENTILATION/AIR CLEANING) electrician. This display shows that the total heat To do wiring, ask your dealer. Never do it by your- exchange and the air cleaning unit are in self.
Page 192 Refer to figure 1 on page [1] • Operating procedure varies with heat pump type Regarding outside air temperature and heat- and cooling only type. Contact your Daikin dealer ing capacity to confirm your system type. • The heating capacity of the air conditioner •...
Page 193 • The movable limit of the flap is changeable. Con- • Programming the start time ( tact your Daikin dealer for details..The system starts Press the AIR FLOW DIRECTION ADJUST operating after the set time has elapsed.
Page 194 SiBE12-817 Instruction • Turn off the main power supply switch when it is PROGRAMMING TIME not used for long periods of time. When the main power switch is turned on, some watts of electricity Press the PROGRAMMING TIME button and is being used even if the system is not operating.
Page 195 Instruction SiBE12-817 B)Washing with water Fig. 3 When the air filter is very dirty, use soft brush and neutral detergent. Remove water and dry in the shade. NOTE • Do not wash the air conditioner with hot water of more than 50˚C, as doing so may result in discol- Fig.
Page 196 SiBE12-817 Instruction • When very grimy 9. NOT MALFUNCTION OF THE AIR Directly apply the type of detergent used for CONDITIONER cleaning ventilation fans or ovens, wait 10 min- utes, and then rinse with water. The following symptoms do not indicate air condi- tioner malfunction NOTE •...
Page 197 Refer to page 6. inated, the temperature distribution inside a room becomes uneven. It is necessary to clean the inside of the indoor unit. Ask your Daikin dealer for details on cleaning the unit. This operation requires a qualified service person.
Page 198 • If the doors or the windows are open. MALFUNCTION CODE Shut doors or windows to prevent wind from Measure: Notify your Daikin dealer and inform coming in. him/her of the display. • If direct sunlight enters the room (when cool- ing).
Page 199 Instruction SiBE12-817 Operation Manual...
Page 200: Part 6 Service Diagnosis
SiBE12-817 Part 6 Service Diagnosis 1. Caution for Diagnosis................190 1.1 Troubleshooting with Operation Lamp ..........190 2. Problem Symptoms and Measures .............192 3. Service Check Function ..............193 3.1 Check Method 1 ...................193 3.2 Check Method 2 ...................195 4. Code Indication on the Remote Controller ..........197 4.1 Error Codes and Description of Fault ...........197 5.
Page 201: Caution For Diagnosis
Caution for Diagnosis SiBE12-817 1. Caution for Diagnosis Troubleshooting with Operation Lamp The operation lamp flashes when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation.
Page 202 SiBE12-817 Caution for Diagnosis In case of FLK(X)S 25/35/50 B Series OPERATION lamp (green) (Q0341) Caution: Operation stops suddenly. (Operation lamp blinks.) Cause of above trouble could be "Operation mode conflict". Check followings; Are the operation modes all the same for indoor units connected to Multi system outdoor unit? If not set all indoor units to the same operation mode and confirm that the operation lamp is not blinking.
Page 203: Problem Symptoms And Measures
Problem Symptoms and Measures SiBE12-817 Problem Symptoms and Measures Problem Symptom Check Item Details of Measure Page to be referred None of the units operates. Check the power supply. Check to make sure that the rated voltage is — supplied. Check the type of the indoor units.
Page 204: Service Check Function
SiBE12-817 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 205 Service Check Function SiBE12-817 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 < ARC452A1 > (R6757) 2. Press the timer cancel button repeatedly until a continuous beep is produced. The code indication changes in the sequence shown below, and notifies with a long beep.
Page 206: Check Method 2
SiBE12-817 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 207 Service Check Function SiBE12-817 5. Press the TEMP button. Press TEMP▲ or TEMP▼ and change the digit until you hear the sound of “beep”. (R4277) 6. Diagnose by the sound. ★ “pi” : The both numbers of tens and units do not accord with the error code. ★...
Page 208: Code Indication On The Remote Controller
SiBE12-817 Code Indication on the Remote Controller 4. Code Indication on the Remote Controller Error Codes and Description of Fault Code Indication Description of Problem System Normal Insufficient gas Low-voltage detection or over-voltage detection Signal transmission error (between indoor and outdoor units) Signal transmission error (on outdoor unit PCB) Unspecified voltage (between indoor and outdoor units) Anti-icing function in other rooms...
Page 209: Troubleshooting
Troubleshooting SiBE12-817 5. Troubleshooting Indoor Units - : Not used for troubleshooting ∗ : Varies depending on the cases. Indication on the Description of the Fault Details of fault remote controller (Refer to the indicated page.) Indoor unit in normal condition (Conduct a diagnosis of the outdoor unit.) —...
Page 210: Outdoor Units
SiBE12-817 Troubleshooting Outdoor Units : ON, : OFF, : Blinks Green : Flashes when in normal condition Red : OFF in normal condition - : Not used for troubleshooting ∗ : Varies depending on the cases. Outdoor Unit LED Indication Indication on Description of The Fault the remote...
Page 211: Indoor Unit Pcb Abnormality
Troubleshooting SiBE12-817 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
SiBE12-817 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 SiBE12-817 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.242 Is there any short-circuit? Provide sufficient air passage. Check the intake air filter. Is it very dirty? Clean the air filter.
Page 214: Fan Motor Or Related Abnormality
SiBE12-817 Troubleshooting Fan Motor or Related Abnormality 5.5.1 AC Motor Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Detection Malfunction When the detected rotation speed 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 SiBE12-817 5.5.2 DC Motor Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Detection Malfunction When the detected rotation speed 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 SiBE12-817 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.239 and rotate fan by hand. Does fan rotate Check No.02 Replace fan motor.
Page 217: Thermistor Or Related Abnormality (Indoor Unit)
Troubleshooting SiBE12-817 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
SiBE12-817 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: Signal Transmission Error (Between Indoor And Outdoor Unit)
Troubleshooting SiBE12-817 Signal Transmission Error (between Indoor and Outdoor Unit) Remote Controller Display Method of The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is checked whether it is normal. Malfunction Detection Malfunction When the data sent from the outdoor unit cannot be received normally, or when the content of the data is abnormal.
Page 220: Unspecified Voltage (Between Indoor And Outdoor Units)
SiBE12-817 Troubleshooting Unspecified Voltage (between Indoor and Outdoor Units) Remote Controller Display Method of The supply power is detected for its requirements (different from pair type and multi type) by the indoor / outdoor transmission signal. Malfunction Detection Malfunction The pair type and multi type are interconnected. Decision Conditions Supposed...
Page 221: Freeze-Up Protection Control
Troubleshooting SiBE12-817 5.10 Freeze-up Protection Control Remote Controller Display Outdoor Unit LED Display Method of Indoor unit icing, during cooling operation, is detected by checking the temperatures sensed by the indoor unit heat exchanger thermistor and room temperature thermistor that are located in a Malfunction shut-down room.
Page 222 SiBE12-817 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.04 Check the wiring and piping. Refer to P.240 Wiring or piping out Check No.06 Activate the wiring error check of spec? mode.
Page 223: Outdoor Unit Pcb Abnormality
Troubleshooting SiBE12-817 5.11 Outdoor Unit PCB Abnormality Remote Controller Display Outdoor Unit LED Display Method of Detect within the programme of the microcomputer that the programme is in normal running order. Malfunction Detection Malfunction When the programme of the microcomputer is in abnormal running order. Decision Conditions Supposed...
Page 224: Ol Activation (Compressor Overload)
SiBE12-817 Troubleshooting 5.12 OL Activation (Compressor Overload) Remote Controller Display Outdoor Unit LED Display Method of A compressor overload is detected through compressor OL. Malfunction Detection Malfunction If the compressor OL is activated twice, the system will be shut down. The error counter will reset itself if this or any other error does not occur during the following Decision 60-minute compressor running time (total time).
Page 225: Compressor Lock
Troubleshooting SiBE12-817 5.13 Compressor Lock Remote Controller Display Outdoor Unit LED Display Method of A compressor lock is detected by checking the compressor running condition through the position detection circuit. Malfunction Detection Malfunction Judging from current waveform generated when high-frequency voltage is applied to the compressor.
Page 226: Dc Fan Lock
SiBE12-817 Troubleshooting 5.14 DC Fan Lock Remote Controller Display Outdoor Unit LED Display Method of A fan motor line error is detected by checking the high-voltage fan motor rpm being detected by the Hall IC. Malfunction Detection Malfunction The fan does not start in 30 seconds even when the fan motor is running. The system will be shut down if the error occurs 16 times.
Page 227: Input Over Current Detection
Troubleshooting SiBE12-817 5.15 Input Over Current Detection Remote Controller Display Outdoor Unit LED Display Method of Malfunction is detected by checking the input current value. Malfunction Detection Malfunction The following condition continues for 2.5 seconds. Input current ≥ 20A (typical value) Decision The compressor halts if the error occurs, and restarts automatically after 3 minutes stand-by.
Page 228 SiBE12-817 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.07 ∗ An input over-current may result from wrong internal wiring. If the wires have been disconnected and reconnected for part replacement, for example, and the system is interrupted by an input over-current, Refer to P.243 check the wires again.
Page 229: Discharge Pipe Temperature Control
Troubleshooting SiBE12-817 5.16 Discharge Pipe Temperature Control Remote Controller Display Outdoor Unit LED Display Method of The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the temperature being detected by the discharge pipe thermistor. Malfunction Detection Malfunction 2YC36 If the temperature being detected by the discharge pipe thermistor rises above 110°C, the Decision...
Page 230: High Pressure Control In Cooling
SiBE12-817 Troubleshooting 5.17 High Pressure Control in Cooling Remote Controller Display Outdoor Unit LED Display Method of High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the temperature being sensed by the heat exchanger thermistor exceeds the limit. Malfunction Detection Malfunction...
Page 231 Troubleshooting SiBE12-817 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.240 Check No. 07 Abnormal Check No.06 Change the air outlet grille Check the installation condition.
Page 232: Compressor Sensor System Abnormality
SiBE12-817 Troubleshooting 5.18 Compressor Sensor System Abnormality Remote Controller Display Outdoor Unit LED Display Method of Fault condition is identified by the supply voltage and the DC voltage which is detected before the compressor startup. Malfunction Fault condition is identified by compressor current which is detected right after the Detection compressor startup.
Page 233 Troubleshooting SiBE12-817 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn off the power Reactor connection check Connection OK? Connect properly. Compressor connection check Connection OK? Connect properly. Disconnect the reactor from the outdoor unit PCB and measure the resistance Reactor check...
Page 234: Position Sensor Abnormality
SiBE12-817 Troubleshooting 5.19 Position Sensor Abnormality Remote Controller Display Outdoor Unit LED Display Method of A compressor startup failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Detection Malfunction The compressor fails to start in about 15 seconds after the compressor run command signal is sent.
Page 235: Ct Or Related Abnormality
Troubleshooting SiBE12-817 5.20 CT or Related Abnormality Remote Controller Display Outdoor Unit LED Display Method of A CT or related error is detected by checking the compressor running frequency and CT- detected input current. Malfunction Detection Malfunction The compressor running frequency is below 55 Hz and the CT input is below 0.1 V. (The input current is also below 0.5 A.) Decision If this error repeats 4 times, the system will be shut down.
Page 236: Sibe12
SiBE12-817 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.12 Turn off the power and turn it on Refer to P.246 again. Get the system started. ∗...
Page 237: Thermistor Or Related Abnormality (Outdoor Unit)
Troubleshooting SiBE12-817 5.21 Thermistor or Related Abnormality (Outdoor Unit) P4 , J3 , J6 , J8 , J9 , H9 Remote Controller Display Outdoor Unit LED Display Method of This type of error is detected by checking the thermistor input voltage to the microcomputer. [A thermistor error is detected by checking the temperature being detected by each thermistor.] Malfunction Detection...
Page 238 SiBE12-817 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.242 Error displayed Reconnect. again on remote controller? Connector or thermistor Reconnect.
Page 239: Electrical Box Temperature Rise
Troubleshooting SiBE12-817 5.22 Electrical Box Temperature Rise Remote Controller Display Outdoor Unit LED Display Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the compressor off. Malfunction Detection Malfunction With the compressor off, the radiation fin temperature is above 100°C. The error is cleared when the temperature drops below 70°C.
Page 240 SiBE12-817 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. WARNING Check No.07 Turn off the power and turn it on again. To cool down the electricals, the Refer to P.243 outdoor unit fan gets started when the radiation fin temperature rises...
Page 241: Radiation Fin Temperature Rise
Troubleshooting SiBE12-817 5.23 Radiation Fin Temperature Rise Remote Controller Display Outdoor Unit LED Display Method of A radiation fin temperature rise is detected by checking the radiation fin temperature being detected by the fin thermistor with the compressor on. Malfunction Detection Malfunction The radiation fin temperature with the compressor on is above 103°C.
Page 242 SiBE12-817 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.07 Turn off the power and turn it on again to get the system started. Refer to P.243 Check No.09 Refer to P.244 Error displayed again?
Page 243: Output Over Current Detection
Troubleshooting SiBE12-817 5.24 Output Over Current Detection Remote Controller Display Outdoor Unit LED Display Method of An output over-current is detected by checking the current that flows in the inverter DC section. Malfunction Detection Malfunction A position signal error occurs while the compressor is running. A speed error occurs while the compressor is running.
Page 244 SiBE12-817 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.07 ∗ An input over-current may result from wrong internal wiring. If the wires have been disconnected and Refer to P.243 reconnected for part replacement, for example, and the system is interrupted by an input over-current, check the wires again.
Page 245: Insufficient Gas
Troubleshooting SiBE12-817 5.25 Insufficient Gas Remote Controller Display Outdoor Unit LED Display Method of Gas shortage detection I: Gas shortage is detected by checking the input current value and the compressor running Malfunction frequency. If the gas is short, the input current is smaller than the normal value. Detection Gas shortage detection II: Gas shortage is detected by checking the discharge temperature and the opening of the...
Page 246 SiBE12-817 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.240 Any thermistor Replace in position. disconnected? * Discharge pipe thermistor * Indoor / outdoor unit heat exchanger thermistor * Room temperature thermistor * Outdoor air thermistor Check No.06...
Page 247: Low-Voltage Detection Or Over-Voltage Detection
Troubleshooting SiBE12-817 5.26 Low-voltage Detection or Over-voltage Detection Remote Controller Display Outdoor Unit LED Display Method of An abnormal voltage rise or drop is detected by checking the detection circuit or DC voltage detection circuit. Malfunction Detection Malfunction An over-voltage signal is fed from the over-voltage detection circuit to the microcomputer, or the voltage being detected by the DC voltage detection circuit is judged to be below 150 V Decision for 0.1 second.
Page 248: Signal Transmission Error (On Outdoor Unit Pcb)
SiBE12-817 Troubleshooting 5.27 Signal Transmission Error (on Outdoor Unit PCB) Remote Controller Display Outdoor Unit LED Display Method of Communication error between microcomputer mounted on the main PCB and PM1. Malfunction Detection Malfunction When the data sent from the PM1 can not be received successively for 9 sec. The abnormality is determined if the above fault conditions occurs once Decision Fault counter is reset when the data from the PM1 can be successfully received.
Page 249: Anti-Icing Function In Other Rooms / Unspecified Voltage (Between Indoor And Outdoor Units)
Troubleshooting SiBE12-817 5.28 Anti-icing Function in Other Rooms / Unspecified Voltage (between Indoor and Outdoor Units) UA , UH Remote Controller Display Outdoor Unit LED Display Method of A wrong connection is detected by checking the combination of indoor and outdoor units on the microcomputer.
Page 250: Check
SiBE12-817 Check 6. Check How to Check 6.1.1 Fan Motor Connector Output Check Check No.01 1. Check connector connection. 2. Check motor power supply voltage output (pins 4-7 and 4-8). 3. Check motor control voltage (pins 4-3). 4. Check rotation command voltage output (pins 4-2). 5.
Page 251: Electronic Expansion Valve Check
Check SiBE12-817 6.1.3 Electronic Expansion Valve Check Check No.04 Conduct the followings to check the electronic expansion valve (EV). 1. Check to see if the EV connector is correctly inserted in the PCB. Compare the EV unit and the connector number. 2.
Page 252 SiBE12-817 Check 6.1.4 Four Way Valve Performance Check Check No.05 Turn off the power and turn it on again. ∗ Four way valve coil Cooling / dry : No continuity Start the heating-mode run. Heating : Continuity voltage at DC 220- Replace the outdoor unit 240 V with compressor PCB.
Page 253: Thermistor Resistance Check
Check SiBE12-817 6.1.5 Thermistor Resistance Check Check No.06 Remove the connectors of the thermistors on the PCB, and measure the resistance of each thermistor using tester. The relationship between normal temperature and resistance is shown in the graph and the table below.
Page 254: Installation Condition Check
SiBE12-817 Check 6.1.6 Installation Condition Check Check No.07 Installation condition check Check the Abnormal allowable dimensions Change the position of the air of the air suction and discharge grille or the discharge area. installation location. Normal Does the discharged air from other outdoor unit cause an Change the position of the air increase of the suction...
Page 255: Discharge Pressure Check
Check SiBE12-817 6.1.7 Discharge Pressure Check Check No.08 Discharge pressure check High Replace compressor. Is the stop valve open? Open the stop valve. Is the connection pipe Replace the pipe installed at deformed? the site. Dirty Are the heat exchanger Clean.
Page 256 SiBE12-817 Check 6.1.9 Power Supply Waveforms Check Check No.10 Measure the power supply waveform between pins 1 and 2 on the terminal board, and check the waveform disturbance. Check to see if the power supply waveform is a sine wave (Fig.1). Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2) [Fig.1] [Fig.2]...
Page 257: Power Transistor Check
Check SiBE12-817 6.1.11 Capacitor Voltage Check Check No.12 Before this checking, be sure to check the main circuit for short-circuit. Checking the capacitor voltage With the circuit breaker still on, measure the voltage according to the drawing of the model in question.
Page 258: Main Circuit Electrolytic Capacitor Check
SiBE12-817 Check 6.1.13 Main Circuit Electrolytic Capacitor Check Check No.14 Checking the main circuit electrolytic capacitor Never touch any live parts for at least 10 minutes after turning off the circuit breaker. If unavoidably necessary to touch a live part, make sure there is no DC voltage using the tester.
Page 259 Check SiBE12-817 6.1.15 Hall IC Check Check No.16 1. Check the connector connection. 2. With the power ON, operation OFF, and the connector connected, check the following. ∗ Output voltage of about 5 V between pins 1 and 3. ∗ Generation of 3 pulses between pins 2 and 3 when the fan motor is operating.
Page 260: Part 7 Removal Procedure
SiBE12-817 Part 7 Removal Procedure 1. Outdoor Unit..................250 1.1 Removal of the Panels and Plates ............250 1.2 Removal of the Electrical Box ..............255 1.3 Removal of the PCB................262 1.4 Removal of the Propeller Fan / Fan Motor ...........268 1.5 Removal of the Sound Blanket.............270 1.6 Removal of Electronic Expansion Valve Coil, Four Way Valve Coil and Thermistor ....................274 1.7 Removal of the Distributor..............277...
Page 261: Outdoor Unit
Outdoor Unit SiBE12-817 1. Outdoor Unit Removal of the Panels and Plates Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points External appearance. Take care not to cut your finger by the fins of the heat exchanger.
Page 262 SiBE12-817 Outdoor Unit Step Procedure Points Loosen the 6 screws of front panel. Loosen the 2 screws (each 1 in front and back) of the clamp plate. Slide the clamp plate to the left to undo the hooks and remove the plate.
Page 263 Outdoor Unit SiBE12-817 Step Procedure Points Lift the front panel up to remove the left side hooks and open the panel. The front panel has the 3 hooks on the left. The front panel has the 1 hook on the right. Removal Procedure...
Page 264 SiBE12-817 Outdoor Unit Step Procedure Points Loosen the 4 screws of discharge grille. Loosen the 2 screws of stop valve cover. And then slide the cover downward to remove. Removal Procedure...
Page 265 Outdoor Unit SiBE12-817 Step Procedure Points When assembling, make sure to catch the 5 hooks. Removal Procedure...
Page 266: Removal Of The Electrical Box
SiBE12-817 Outdoor Unit Removal of the Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Disconnect the Illustrations are for 3 room connecting wires model.
Page 267 Outdoor Unit SiBE12-817 Step Procedure Points 2. Disconnect the each harnesses Detach the fixing tape for the electrical box (cover). Undo the 4 hooks at the mark of the drip proof cover. Lift the cover up to remove. Disconnect the Check the LED through the connector for fan motor slit.
Page 268 SiBE12-817 Outdoor Unit Step Procedure Points The figure shows the arrangement of the wire harness for fan motor. Disconnect the The number of the connectors for connectors are different electronic expansion according to the number of valve coil. the connected indoor units. [S20] - White [S21] - Red [S22] - Blue...
Page 269 Outdoor Unit SiBE12-817 Step Procedure Points Disconnect the connector for overload protector [S40]. Disconnect the connector for relay harness of compressor. Disconnect the each connector. [S90] : Outdoor air, heat exchanger, discharge pipe thermistor [S92] : Gas pipe thermistor [S93] : Liquid pipe thermistor Removal Procedure...
Page 270 SiBE12-817 Outdoor Unit Step Procedure Points Disconnect the connector for four way valve [S80]. The figure shows the arrangement of the wire harness under the electrical box. Undo the wire clip for the thermistor lead wire. Removal Procedure...
Page 271 Outdoor Unit SiBE12-817 Step Procedure Points 3. Remove the electrical box Loosen the 2 screws of the earth terminal. 4. Disconnect the power supply connecting wires Loosen the screws on the terminal board and disconnect the wires of A, B, C(, and D) port. Removal Procedure...
Page 272 SiBE12-817 Outdoor Unit Step Procedure Points Detach the outdoor air thermistor. Loosen the screw on the right side of the electrical box. Loosen the 1 screw in front of the electrical box. Lift up the electrical box to remove. Removal Procedure...
Page 273: Removal Of The Pcb
Outdoor Unit SiBE12-817 Removal of the PCB Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the service PCB External appearance of the service PCB and the terminal board.
Page 274 SiBE12-817 Outdoor Unit Step Procedure Points Widen the upper hook and pull the service PCB upward to remove. 2. Remove the control PCB Disconnect the each connectors on the terminal board. Disconnect the 2 connectors for reactor. Loosen the 3 screws of the PCB.
Page 275 Outdoor Unit SiBE12-817 Step Procedure Points Undo the 3 hooks on the reactor side and slide the control PCB. Undo the relay harness for compressor from the hook. Lift up the control PCB In working, be careful not to to remove. break the control PCB with the excessive force because the PCB and the radiation fin...
Page 276 SiBE12-817 Outdoor Unit Step Procedure Points Names of parts on the control PCB. Loosen the 2 screws of the radiation fin. Loosen the 3 screws of the reactor and the 1 screw of the clamp. Removal Procedure...
Page 277 Outdoor Unit SiBE12-817 Step Procedure Points 3. Disconnect the wire harnesses 4. Remove the terminal board Open the electrical box and remove the terminal board. Removal Procedure...
Page 278 SiBE12-817 Outdoor Unit Step Procedure Points Loosen the 2 screws of the terminal board to remove. Removal Procedure...
Page 279: Removal Of The Propeller Fan / Fan Motor
Outdoor Unit SiBE12-817 Removal of the Propeller Fan / Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the fan motor Remove the outer panels fixing plate.
Page 280 SiBE12-817 Outdoor Unit Step Procedure Points Undo the 2 fixing hooks of the lead wire. Loosen the 4 screws of the fan motor. Lead wire Propeller fan (R3249) When assembling, put the lead wire through the back of the motor. (so as not to be entangled with the propeller fan) Detach the 4 screws...
Page 281: Removal Of The Sound Blanket
Outdoor Unit SiBE12-817 Removal of the Sound Blanket Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the right side Remove the outer panels panel and plates.
Page 282 SiBE12-817 Outdoor Unit Step Procedure Points Pull up the right side panel. Loosen the 2 screws of the wiring fixture. 2. Remove the partition plate Loosen the 2 screws to remove the partition plate. Detach the clamp of the relay harness for the compressor.
Page 283 Outdoor Unit SiBE12-817 Step Procedure Points Pull up the partition plate. When assembling, make sure to catch the lower hook of the partition plate. 3. Remove the sound blanket Lift up the sound blanket (top-upper) to remove. Since the piping ports on the sound blanket are torn easily, remove the blanket carefully.
Page 284 SiBE12-817 Outdoor Unit Step Procedure Points Remove the sound blanket (top-lower). Undo the fixing strings, open the sound blanket (body) and pull it out. Open the sound blanket (inner) and pull it out. Removal Procedure...
Page 285: Removal Of Electronic Expansion Valve Coil, Four Way Valve Coil And Thermistor
Outdoor Unit SiBE12-817 Removal of Electronic Expansion Valve Coil, Four Way Valve Coil and Thermistor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the electronic expansion valve coil Remove the each electronic expansion...
Page 286 SiBE12-817 Outdoor Unit Step Procedure Points 3. Remove the liquid/gas Meet the edge of the pipe thermistor thermistor and clip. Open the putty and The number of ports is remove the liquid pipe different according to the thermistor. models. [S90] : Outdoor air thermistor Heat exchanger...
Page 287 Outdoor Unit SiBE12-817 Step Procedure Points 5. Remove the discharge Meet the edge of the pipe thermistor thermistor and clip. Undo the clip and Be careful not to lose the clip remove the discharge for the discharge pipe pipe thermistor. thermistor.
Page 288: Removal Of The Distributor
SiBE12-817 Outdoor Unit Removal of the Distributor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the putty. Warning Ventilate when refrigerant leaks during the work. (If refrigerant contacts fire, it will cause to arise toxic gas.) Caution...
Page 289: Removal Of The Four Way Valve
Outdoor Unit SiBE12-817 Removal of the Four Way Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Be sure to apply nitrogen Cautions for restoration replacement when 1.
Page 290: Removal Of The Compressor
SiBE12-817 Outdoor Unit Removal of the Compressor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the terminal Make a note. cover Be careful so as not to burn the compressor terminals or Remove the terminal the name plate.
Page 291 Outdoor Unit SiBE12-817 Step Procedure Points Remove the 2 sheets of putty. Warning Ventilate when refrigerant leaks during the work. (If refrigerant contacts fire, it will cause to arise toxic gas.) There is one nut fixing the compressor. Remove the nut with an open-end spanner.
Page 292: Part 8 Others
SiBE12-817 Part 8 Others 1. Others ....................282 1.1 Test Run from the Remote Controller ..........282 1.2 Jumper Settings ...................283 1.3 Application of Silicon Grease to a Power Transistor and a Diode Bridge..................284 Others...
Page 293: Others
Others SiBE12-817 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 294: Jumper Settings
SiBE12-817 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. In case of FTXG series How to set the different addresses Control PCB of the indoor unit (1) Remove the front grille.
Page 295: Application Of Silicon Grease To A Power Transistor And A Diode Bridge
Others SiBE12-817 Application of Silicon Grease to a Power Transistor Diode Bridge Applicable All outdoor units using inverter type compressor for room air conditioner. Models When the printed circuit board of an outdoor unit is replaced, it is required that silicon grease (*1) is certainly applied to the heat radiation part (the contact point to the heat radiation fin) of the power transistor and diode bridge.
Page 296: Part 9 Appendix
SiBE12-817 Part 9 Appendix 1. Piping Diagrams..................286 1.1 Indoor Units ..................286 1.2 Outdoor Units ..................290 2. Wiring Diagrams..................292 2.1 Indoor Units ..................292 2.2 Outdoor Units ..................295 Appendix...
Page 297: Piping Diagrams
Piping Diagrams SiBE12-817 Piping Diagrams Indoor Units 1.1.1 Wall Mounted Type FTXS20/25/35/42G2V1B FTXS50G2V1B INDOOR UNIT INDOOR UNIT 6.4CuT 6.4CuT HEAT EXCHANGER HEAT EXCHANGER THERMISTOR THERMISTOR CROSS FLOW FAN CROSS FLOW FAN ON HEAT EXCH. ON HEAT EXCH. FIELD PIPING FIELD PIPING 6.4CuT 6.4CuT FAN MOTOR...
Page 298 SiBE12-817 Piping Diagrams 1.1.2 Duct Connected Type FDKS50CVMB, FDKS25EAVMB, FDKS35EAVMB FDXS50CVMB, FDXS25EAVMB, FDXS35EAVMB INDOOR UNIT ( 6.4CuT ) HEAT EXCHANGER THERMISTOR ON HEAT FIELD PIPING ( 6.4CuT ) EXCH. SIROCCO FAN FAN MOTOR FIELD PIPING CuT ) CuT ) REFRIGERANT FLOW CDXS25CVMB CDXS50CVMB CDKS25CVMB...
Page 299 Piping Diagrams SiBE12-817 FLXS25BAVMB, FLXS35BAVMB FLXS50BAVMB INDOOR UNIT INDOOR UNIT ( 9.5CuT ) ( 6.4CuT ) HEAT EXCHANGER HEAT EXCHANGER THERMISTOR THERMISTOR ON HEAT FIELD PIPING ON HEAT FIELD PIPING EXCH. ( 6.4CuT ) ( 6.4CuT ) EXCH. SIROCCO FAN SIROCCO FAN FAN MOTOR FAN MOTOR...
Page 300 SiBE12-817 Piping Diagrams 1.1.5 Ceiling Suspended Type FHQ35/50BVV1B Indoor heat exchanger φ Field piping C1220T-0 φ Field piping C1220T-0 Outdoor unit Indoor unit MODEL FHQ35BUV1B FHQ35BVV1B FCQ35BVE FCQ35C7VEB FHQ50, 60BUV1B FHQ50, 60BVV1B FCQ50, 60BVE 12.7 FBQ60BV1 FBQ60BVL FCQ50, 60C7VEB FUQ71, 100, 125BUV1B FUQ71, 100, 125BVV1B FHQ71, 100, 125BUV1B FHQ71, 100, 125BVV1B...
Page 301: Outdoor Units
Piping Diagrams SiBE12-817 Outdoor Units 1.2.1 Cooling Only 3MKS50E3V1B OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE ELECTRONIC THERMISTOR ( DOA ) HEADER EXPANSION VALVE LIQUID PIPE THERMISTOR ( DLA ) 6.4CuT HEADER 9.5CuT ROOM A ( 6.4 CuT ) FILTER ELECTRONIC EXPANSION VALVE LIQUID PIPE THERMISTOR ( DLB )
Page 302 SiBE12-817 Piping Diagrams 1.2.2 Heat Pump 3MXS52E3V1B OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE THERMISTOR ( DOA ) HEADER ELECTRONIC EXPANSION VALVE LIQUID PIPE HEADER THERMISTOR ( DLA ) 9.5CuT 6.4CuT ROOM A ( 6.4 CuT ) FILTER ELECTRONIC EXPANSION VALVE LIQUID PIPE THERMISTOR ( DLB ) FIELD...
Page 303: Wiring Diagrams
Wiring Diagrams SiBE12-817 Wiring Diagrams Indoor Units 2.1.1 Wall Mounted Type FTXS20/25/35/42/50G2V1B FIELD WIRING. PCB3 PCB1 RECTIFIER 3.15A LED1 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 304 SiBE12-817 Wiring Diagrams 2.1.2 Duct Connected Type FDKS50CVMB, FDKS25EAVMB, FDKS35EAVMB FDXS50CVMB, FDXS25EAVMB, FDXS35EAVMB 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 305 Wiring Diagrams SiBE12-817 2.1.4 Floor Standing Type FVXS25FV1B, FVXS35FV1B, FVXS50FV1B 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 306: Outdoor Units
SiBE12-817 Wiring Diagrams Outdoor Units 2.2.1 Cooling Only 3MKS50E3V1B MRM20 POWER SUPPLY 3.15A MRM10 6(P) 7(N) TO INDOOR UNIT X11A ROOM B 3.15A ROOM A PCB1 ROOM C S101 SHEET METAL t° t° t° t° t° t° t° t° t° 1 S102 indoor PCB2...
Page 307 Wiring Diagrams SiBE12-817 2.2.2 Heat Pump 3MXS52E3V1B MRM20 3.15A POWER SUPPLY MRM10 6(P) + + + 7(N) TO INDOOR UNIT X11A ROOM B 3.15A ROOM A PCB1 ROOM C S101 SHEET METAL t˚ t˚ t˚ t˚ t˚ t˚ t˚ t˚ t˚...
Page 308 SiBE12-817 Index Numerics check No.06 ............242 check No.07 ............243 00 ................197 check No.08 ............244 2 area INTELLIGENT EYE........57 check No.09 ............244 3-minute standby.............72 check No.10 ............245 check No.11 ............245 check No.12 ............246 A1................200 check No.13 ............
Page 309 SiBE12-817 A5 ............201, 210 front panel control ..........48 A6 ............203, 204 front panel mechanism ........30, 207 C4 ..............206 front panel open/close fault ........207 C7 ..............207 FU1 .......... 28, 30, 32, 34, 37, 41 C9 ..............206 FU2 ................ 41 E1 ..............212 FU3 ................
Page 310 SiBE12-817 L5 ................232 printed circuit board (PCB) LED A........28, 30, 32, 34, 37, 41 ceiling suspended type ........40 LED1 ..........28, 32, 34, 37, 41 control PCB...... 29, 31, 32, 35, 38, 263 LED2 .........28, 30, 32, 34, 37, 41 display PCB ........
Page 311 SiBE12-817 S48..............28, 37 turning speed pulse input on the outdoor unit PCB S49..............28, 30, 37 check............. 247 S51..............30, 41 S52..............41, 262 S6................34 U0................. 234 S7..............32, 34 U2................. 236 S70..............41, 256 U4................. 208 S80..............41, 259 U7................. 237 S90............41, 258, 275 UA ..............209, 238 S92............41, 258, 275 UH ................
Page 312 SiBE12-817 Drawings & Flow Charts Numerics fan motor or related abnormality AC motor ............203 2 area INTELLIGENT EYE ........57 DC motor ............204 3-D airflow ..............46 four way valve performance check ...... 241 freeze-up protection control ....75, 201, 210 frequency control ...........
Page 313 SiBE12-817 output over current detection .......232 thermistor or related abnormality (outdoor unit) .. 226 over-voltage detection ..........236 thermistor resistance check ........ 242 thermostat control ..........52 troubleshooting with the LED indication ....191 PCB (ceiling suspended type) ........40 turning speed pulse input on the outdoor unit PCB phase steps ............49 check ............
Page 314 Specifications, designs and other content appearing in this brochure are current as of February 2008 but subject to change without notice. SiBE 12-817 Printed in Japan 02/2008 B AK...

Daikin E-Series Service Manual

Part 1 List of Functions

Part 2 Specifications

Part 3 Printed Circuit Board Connector Wiring Diagram

Part 4 Function and Control

Part 5 Operation Manual

Part 6 Service Diagnosis

Part 7 Removal Procedure

Part 8 Others

Part 9 Appendix

Quick Links

Troubleshooting

Related Manuals for Daikin E-Series

Summary of Contents for Daikin E-Series

Table of Contents