Page 1 SiBE12-933_A Service Manual Inverter Multi for 2 Rooms G-Series / H-Series [Applied Models] Inverter Multi : Cooling Only Inverter Multi : Heat Pump...
Page 2 SiBE12-933_A Inverter Multi for 2 Rooms G-Series / H-Series Cooling Only Indoor Unit FTXS20G2V1B FDKS50CVMB FVXS25FV1B FTXS25G2V1B FDKS25EAVMB FVXS35FV1B FTXS35G2V1B FDKS35EAVMB FVXS50FV1B FTXS42G2V1B FLKS25BAVMB FFQ25B8V1B FTXS50G2V1B FLKS35BAVMB FFQ35B8V1B FLKS50BAVMB FFQ50B8V1B Outdoor Unit 2MKS40H2V1B 2MKS50H2V1B Heat Pump Indoor Unit ATX20GV1B FTXG25EV1BW(S)
Page 3: Table Of Contents
SiBE12-933_A 1. Introduction .....................v 1.1 Safety Cautions ..................v 1.2 Used Icons ....................ix Part 1 List of Functions ..............1 1. List of Functions ..................2 1.1 Cooling Only Models ................2 1.2 Heat Pump Models...................7 Part 2 Specifications ..............14 1. Specifications ..................15 1.1 Indoor Units - Cooling Only ..............15 1.2 Outdoor Units - Cooling Only ..............21 1.3 Indoor Units - Heat Pump...............23...
Page 4 SiBE12-933_A 3.3 Controls at Mode Changing / Start-up............83 3.4 Discharge Pipe Temperature Control.............85 3.5 Input Current Control................85 3.6 Freeze-up Protection Control ..............86 3.7 Heating Peak-cut Control ...............86 3.8 Fan Control.....................87 3.9 Liquid Compression Protection Function 2..........87 3.10 Defrost Control ..................88 3.11 Electronic Expansion Valve Control ............89 3.12 Malfunctions ...................93 3.13 Additional Function.................94...
Page 5 SiBE12-933_A 4.23 Anti-icing Function in Other Rooms / Unspecified Voltage (between Indoor and Outdoor Units) ............208 4.24 Outdoor Unit PCB Abnormality or Signal Transmission Circuit Abnormality ................209 5. Check ....................212 5.1 How to Check ..................212 Part 7 Removal Procedure ............225 1.
Page 6: Introduction
Introduction SiBE12-933_A 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 SiBE12-933_A Introduction 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 R-410A refrigerant models, be sure to use pipes, flare nuts and tools for the exclusive use of the R-410A refrigerant.
Page 8 Introduction SiBE12-933_A 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 SiBE12-933_A Introduction 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
Introduction SiBE12-933_A 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: Part 1 List Of Functions
SiBE12-933_A Part 1 List of Functions 1. List of Functions ..................2 1.1 Cooling Only Models ................2 1.2 Heat Pump Models...................7 List of Functions...
Page 12: List Of Functions
List of Functions SiBE12-933_A 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) — Photocatalytic Deodorizing Filter — Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
Page 13 SiBE12-933_A 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 14 List of Functions SiBE12-933_A 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 SiBE12-933_A 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 16 List of Functions SiBE12-933_A Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — Function Clean Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) — —...
Page 17: Heat Pump Models
SiBE12-933_A List of Functions Heat Pump Models Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
Page 18 List of Functions SiBE12-933_A 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 SiBE12-933_A 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 20 List of Functions SiBE12-933_A Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
Page 21 SiBE12-933_A 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 22 List of Functions SiBE12-933_A 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 23 SiBE12-933_A 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 — –15 Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
Page 24: Part 2 Specifications
SiBE12-933_A Part 2 Specifications 1. Specifications ..................15 1.1 Indoor Units - Cooling Only ..............15 1.2 Outdoor Units - Cooling Only ..............21 1.3 Indoor Units - Heat Pump...............23 1.4 Outdoor Units - Heat Pump ..............33 Specifications...
Page 25: Specifications
SiBE12-933_A Specifications 1. Specifications Indoor Units - Cooling Only Wall Mounted Type 50Hz 220-230-240V 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)
Page 26 Specifications SiBE12-933_A 50Hz 220-230-240V 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 27: Duct Connected Type
SiBE12-933_A Specifications 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 28 Specifications SiBE12-933_A 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 29: Floor Standing Type
SiBE12-933_A Specifications Floor Standing Type 50Hz 220-230-240V 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 30: Ceiling Mounted Cassette Type
Specifications SiBE12-933_A Ceiling Mounted Cassette Type 50Hz 230V Model FFQ25B8V1B FFQ35B8V1B Rated Capacity 2.5kW Class 3.5kW Class Color White White Decoration Panel Dimensions (H×W×D) 55×700×700 55×700×700 9.0 (318) 10.0 (353) — — m³/min Airflow Rates (cfm) 6.5 (230) 6.5 (230) —...
Page 31: Outdoor Units - Cooling Only
SiBE12-933_A Specifications Outdoor Units - Cooling Only 50Hz 220-240V Model 2MKS40H2V1B Cooling Capacity — Power Consumption — Running Current — Casing Color Ivory White Type Hermetically Sealed Swing Type Compressor Model 1YC23AGXD Motor Output Model FVC50K Refrigerant Charge 0.45 Type R-410A Refrigerant Charge...
Page 32 Specifications SiBE12-933_A 50Hz 220-240V Model 2MKS50H2V1B 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 R-410A Refrigerant Charge 1.60 m³/min Airflow Rates...
Page 33: Indoor Units - Heat Pump
SiBE12-933_A Specifications Indoor Units - Heat Pump Wall Mounted Type 50Hz 230V ATX20GV1B ATX25GV1B Model Cooling Heating Cooling Heating Rated Capacity 2.0kW Class 2.5kW Class Front Panel Color White White 9.1 (321) 9.4 (331) 9.2 (325) 9.7 (342) 7.4 (261) 7.8 (276) 7.6 (268) 8.0 (283)
Page 34 Specifications SiBE12-933_A 50Hz 220-230-240V ATXS20G2V1B ATXS25G2V1B Model Cooling Heating Cooling Heating Rated Capacity 2.0kW Class 2.5kW Class Front Panel Color White White 9.4 (332) 9.9 (350) 9.1 (321) 9.8 (346) 7.4 (262) 8.2 (290) 7.1 (252) 7.9 (280) m³/min Airflow Rates (cfm) 5.5 (193) 6.5 (228)
Page 35 SiBE12-933_A Specifications 50Hz 220-230-240V ATXS50G2V1B ATXG25EV1B Model Cooling Heating Cooling Heating Rated Capacity 5.0kW Class 2.5kW Class Front Panel Color White Mat Crystal White 10.2 (360) 11.0 (388) 7.7 (271) 9.0 (317) 8.6 (305) 9.3 (330) 6.1 (215) 7.9 (278) m³/min Airflow Rates (cfm)
Page 36 Specifications SiBE12-933_A 50Hz 220-230-240V 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) 6.1 (215) 7.9 (278) m³/min Airflow Rates...
Page 37 SiBE12-933_A Specifications 50Hz 220-230-240V 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 38 Specifications SiBE12-933_A 50Hz 220-230-240V FTXS35G2V1B FTXS42G2V1B Model Cooling Heating Cooling Heating Rated Capacity 3.5kW Class 4.2kW Class Front Panel Color White White 10.4 (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 39 SiBE12-933_A Specifications 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 40 Specifications SiBE12-933_A 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 41 SiBE12-933_A Specifications 50Hz 220-230-240V 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 42 Specifications SiBE12-933_A Ceiling Mounted Cassette Type 50Hz 230V FFQ25B8V1B FFQ35B8V1B Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class Color White White Decoration Panel Dimensions (H×W×D) 55×700×700 55×700×700 9.0 (318) 9.0 (318) 10.0 (353) 10.0 (353) — — —...
Page 43: Outdoor Units - Heat Pump
SiBE12-933_A Specifications Outdoor Units - Heat Pump 50Hz 220-240V 2MXS40H2V1B, 2AMX40G2V1B Model Cooling Heating Capacity — Power Consumption — Running Current — Casing Color Ivory White Type Hermetically Sealed Swing Type Compressor Model 1YC23AGXD Motor Output Model FVC50K Refrigerant Charge 0.45 Type R-410A...
Page 44 Specifications SiBE12-933_A 50Hz 220-240V 2MXS50H2V1B, 2AMX50G2V1B Model Cooling Heating — 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 R-410A Refrigerant Charge 1.60...
Page 45: Part 3 Printed Circuit Board Connector Wiring Diagram
SiBE12-933_A Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........36 1.1 Wall Mounted Type ................36 1.2 Duct Connected Type................43 1.3 Floor / Ceiling Suspended Dual Type.............45 1.4 Floor Standing Type ................48 1.5 Ceiling Mounted Cassette Type (600×600)..........50 1.6 Outdoor Units ..................53 Printed Circuit Board Connector Wiring Diagram...
Page 46: Printed Circuit Board Connector Wiring Diagram
Printed Circuit Board Connector Wiring Diagram SiBE12-933_A 1. Printed Circuit Board Connector Wiring Diagram Wall Mounted Type 1.1.1 ATX20-35G Connectors PCB (1) (Control PCB) 1) S6 Connector for swing motor (horizontal blades) 2) S26 Connector for display PCB 3) S32 Connector for heat exchanger thermistor 4) S200 Connector for fan motor...
Page 47 SiBE12-933_A Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (1): Control PCB S200 LED A S403 2P206569 PCB (2): Display PCB LED2 LED1 RTH1 3P206563 Printed Circuit Board Connector Wiring Diagram...
Page 48 Printed Circuit Board Connector Wiring Diagram SiBE12-933_A 1.1.2 FTXS20~50G, ATXS20~50G Connectors PCB (1) (Control PCB) 1) S1 Connector for DC fan motor 2) S21 Connector for centralized control (HA) 3) S25 Connector for INTELLIGENT EYE sensor PCB 4) S32 Connector for heat exchanger thermistor 5) S41 Connector for swing motor 6) S46...
Page 49 SiBE12-933_A Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (1): Control PCB LED A 2P206687 Printed Circuit Board Connector Wiring Diagram...
Page 50 Printed Circuit Board Connector Wiring Diagram SiBE12-933_A 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 51 SiBE12-933_A Printed Circuit Board Connector Wiring Diagram 1.1.3 FTXG25/35E, CTXG50E, ATXG25-50E Connectors PCB (1) (Control PCB) 1) S1 Connector for fan motor 2) S21 Connector for centralized control (HA) 3) S32 Connector for heat exchanger thermistor 4) S36 Connector for INTELLIGENT EYE sensor PCB 5) S41 Connector for swing motor 6) S46...
Page 52 Printed Circuit Board Connector Wiring Diagram SiBE12-933_A 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 53: Duct Connected Type
SiBE12-933_A Printed Circuit Board Connector Wiring Diagram Duct Connected Type Connectors PCB (1) (Control PCB) 1) S1 Connector for AC fan motor 2) S7 Connector for AC fan motor 3) S21 Connector for centralized control (HA) 4) S26 Connector for display PCB 5) S32 Connector for heat exchanger thermistor PCB (2) (Display PCB)
Page 54 Printed Circuit Board Connector Wiring Diagram SiBE12-933_A PCB Detail PCB (1): Control PCB LED A 2P131149 PCB (2): Display PCB LED3 LED2 RTH1 LED1 2P084375 Printed Circuit Board Connector Wiring Diagram...
Page 55: Floor / Ceiling Suspended Dual Type
SiBE12-933_A Printed Circuit Board Connector Wiring Diagram Floor / Ceiling Suspended Dual Type Connectors PCB (1) (Control PCB) 1) S6 Connector for swing motor (horizontal swing) 2) S7 Connector for AC fan motor 3) S21 Connector for centralized control 4) S24 Connector for display PCB 5) S26 Connector for signal receiver PCB...
Page 56 Printed Circuit Board Connector Wiring Diagram SiBE12-933_A PCB Detail PCB (1): Control PCB Pb Free LED A 12V Check 5V Check S37 JC JB 2P084352 PCB (2): Power Supply PCB Pb Free 2P084361 Printed Circuit Board Connector Wiring Diagram...
Page 57 SiBE12-933_A Printed Circuit Board Connector Wiring Diagram PCB (3): Display PCB Pb Free LED2 LED1 LED3 PCB (4): Signal Receiver PCB EX511 REV 12 PHOTO 2P084377- 1 S31(RTH) (R6057) Printed Circuit Board Connector Wiring Diagram...
Page 58: Floor Standing Type
Printed Circuit Board Connector Wiring Diagram SiBE12-933_A Floor Standing Type Connectors PCB (1) (Sensor PCB) 1) S49 Connector for control PCB PCB (2) (Control PCB) 1) S1 Connector for fan motor 2) S21 Connector for centralized control 3) S26 Connector for service PCB 4) S32 Connector for heat exchanger thermistor 5) S41...
Page 59 SiBE12-933_A Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (1): Sensor PCB RTH2 3P191450 PCB (2): Control PCB LED A 2P191446 PCB (3): Service PCB PCB (4): Display PCB LED1 LED2 3P191447 3P191448 ★ LED3 does not function. Printed Circuit Board Connector Wiring Diagram...
Page 60: Ceiling Mounted Cassette Type (600×600)
Printed Circuit Board Connector Wiring Diagram SiBE12-933_A Ceiling Mounted Cassette Type (600×600) Connectors PCB (1) (Control PCB [A1P]) 1) X5A Connector for terminal strip (for wired remote controller) 2) X10A, X11A Connector for transformer 3) X15A Connector for float switch 4) X17A, X18A Connector for heat exchanger thermistor 5) X19A...
Page 61 SiBE12-933_A Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (1): Control PCB (A1P) X20A X25A X27A X11A X10A X33A X18A Capacity setting adaptor X19A X61A X60A X36A X40A (Service monitor LED) X17A X15A 2P095006 X24A X35A Printed Circuit Board Connector Wiring Diagram...
Page 62 Printed Circuit Board Connector Wiring Diagram SiBE12-933_A PCB Detail PCB (2): Signal Receiver PCB (A3P) (R4873) PCB (3): Display PCB (A4P) LED4 LED3 LED2 LED1 (R4874) ★ LED5 and LED6 do not function. Printed Circuit Board Connector Wiring Diagram...
Page 63: Outdoor Units
SiBE12-933_A Printed Circuit Board Connector Wiring Diagram Outdoor Units Connectors PCB (1) (Control PCB) 1) S20 Connector for electronic expansion valve coil A port 2) S21 Connector for electronic expansion valve coil B port 3) S40 Connector for overload protector 4) S45 Connector for terminal strip (thermal fuse) 5) S70...
Page 64 Printed Circuit Board Connector Wiring Diagram SiBE12-933_A PCB Detail PCB (1): Control PCB (40 class) LED A S21 S20 S40 S45 S70 2P190760 PCB (1): Control PCB (50 class) LED A J3 J4 S40 S45 2P197402 Printed Circuit Board Connector Wiring Diagram...
Page 65: Part 4 Function And Control
SiBE12-933_A Part 4 Function and Control 1. Main Functions..................56 1.1 Temperature Control ................56 1.2 Frequency Principle................56 1.3 Power-Airflow Flaps, Wide-Angle Louvers, Auto-Swing, COMFORT AIRFLOW Mode and 3-D Airflow ........58 1.4 Operation Starting Control..............60 1.5 Fan Speed Control for Indoor Units............61 1.6 Program Dry Function ................63 1.7 Automatic Operation................64 1.8 Thermostat Control.................65...
Page 66: Main Functions
Main Functions SiBE12-933_A 1. Main Functions Temperature Control Definitions of The definitions of temperatures are classified as following. Temperatures Room temperature: temperature of lower part of the room Set temperature: temperature set by remote controller Room thermistor temperature: temperature detected by room temperature thermistor Target temperature: temperature determined by microcomputer Target temperature Room thermistor temperature...
Page 67 SiBE12-933_A Main Functions Drawing of The following drawing shows a schematic view of the inverter principle: Inverter Refrigerant circulation rate (high) high speed Amount of heat Amount of heat exchanged air (large) exchanged air (large) high f low f Amount of heat Amount of heat exchanged air (small) exchanged air (small)
Page 68: Power-Airflow Flaps, Wide-Angle Louvers, Auto-Swing, Comfort Airflow Mode And 3-D Airflow
Main Functions SiBE12-933_A Power-Airflow Flaps, Wide-Angle Louvers, Auto-Swing, COMFORT AIRFLOW Mode and 3-D Airflow 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. Flaps Heating Mode During heating mode, the large flap enables direct warm air straight downwards.
Page 69 SiBE12-933_A Main Functions COMFORT F(A)TXS20-50G The vertical swing flap is controlled not to blow the air directly on the person in the room. AIRFLOW Mode The airflow rate is controlled automatically within the following steps. Cooling: L tap – MH tap (same as AUTOMATIC) Heating: Equivalent to ML tap –...
Page 70: Operation Starting Control
Main Functions SiBE12-933_A Operation Starting Control F(C)(A)TXG25-50E 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 71: Fan Speed Control For Indoor Units
SiBE12-933_A Main Functions Fan Speed Control for Indoor Units Control Mode Phase control and fan speed control contains 9 steps: LLL, LL, SL, L, ML, M, MH, H, and HH. The airflow rate can be automatically controlled depending on the difference between the room thermistor temperature and the target temperature.
Page 72 Main Functions SiBE12-933_A Automatic On heating mode, the indoor fan speed is regulated according to the indoor heat exchanger temperature and the difference between the room temperature and the required set point. Airflow Control for Heating Automatic The following drawing explains the principle of fan speed control for cooling (reference): Airflow Control fan speed for Cooling...
Page 73: Program Dry Function
SiBE12-933_A Main Functions Program Dry Function Outline Program dry operation removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and airflow rate, the temperature adjustment and fan adjustment buttons are inoperable in this mode. Detail The microcomputer automatically sets the temperature and airflow rate.
Page 74: Automatic Operation
Main Functions SiBE12-933_A Automatic Operation Automatic Cooling / Heating Function (Heat Pump Only) When the AUTO mode is selected with the remote controller, the microcomputer automatically determines the operation mode from cooling and heating according to the room temperature and setting temperature at the time of the operation startup, and automatically operates in that mode.
Page 75: Thermostat Control
SiBE12-933_A Main Functions Thermostat Control Thermostat control is based on the difference between the room temperature and the set point. Thermostat OFF Condition The temperature difference is in the zone A. Thermostat ON Condition The temperature difference is above the zone C after being in the zone A. The system resumes from defrost control in any zones except A.
Page 76: Night Set Mode
Main Functions SiBE12-933_A Night Set Mode When the OFF timer is set, the NIGHT SET Mode is automatically activated. The NIGHT SET Mode keeps the airflow rate setting. The Night Set The NIGHT SET Mode continues operation at the target temperature for the first one hour, then Circuit automatically raises the target temperature slightly in the case of cooling, or lowers it slightly in the case of heating.
Page 77: Econo Mode
SiBE12-933_A Main Functions 1.10 ECONO Mode Outline F(A)TXS20-50G, ATX20-35G, FVXS25-50F ECONO Mode is a function that sets a limit for power consumption. A maximum power consumption of 1000 W (40 class) or 1300W (50 class) is the limit for the 2MK(X)S40/50H and 2AMX40/50G.
Page 78: Area Intelligent Eye (Ftxs)
Main Functions SiBE12-933_A 1.11 2 AREA INTELLIGENT EYE (FTXS) 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 79 SiBE12-933_A Main Functions 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 80: Intelligent Eye (Atxs, Ftxg, Atxg, Ctxg)
Main Functions SiBE12-933_A 1.12 INTELLIGENT EYE (ATXS, FTXG, ATXG, 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 81 SiBE12-933_A Main Functions Since the set temperature is shifted by 2°C higher for 40 minutes, compressor speed becomes low and can realize energy saving operation. But as thermostat is prone to be off by the fact that the set temperature has been shifted, the thermostat-off action is prohibited in 40 minutes so as to prevent this phenomena.
Page 82: Home Leave Operation
Main Functions SiBE12-933_A 1.13 HOME LEAVE Operation Outline FDK(X)S, FLK(X)S 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 83: Inverter Powerful Operation
SiBE12-933_A Main Functions 1.14 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 is converted to the following states in a period of 20 minutes.
Page 84: Other Functions
Main Functions SiBE12-933_A 1.15 Other Functions 1.15.1 Hot-start Function Heat Pump Only In order to prevent the cold air blast that normally comes when heating is started, the temperature of the heat exchanger of the indoor unit is detected, and either the airflow is stopped or is made very weak thereby carrying out comfortable heating of the room.
Page 85: Weekly Timer Operation
SiBE12-933_A Main Functions 1.15.6 Air-Purifying Filter For FLK(X)S25-50B A double structure made up of a bacteriostatic filter and an Air-Purifying Filter traps dust, mildew, mites, tobacco smoke, and allergy-causing pollen. Replace the Air-Purifying Filter once every 3 months. 1.15.7 Air Filter (Prefilter) The air filter net is impregnated with a safe, odourless mould preventative to make the filter virtually immune to mould.
Page 86: Function Of Thermistor
Function of Thermistor SiBE12-933_A 2. Function of Thermistor Heat Pump Model Expansion valve Four way valve (R7042) Compressor A Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge pipe 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 pipe temperature can be obtained.
Page 87 SiBE12-933_A Function of Thermistor D Indoor Heat 1. The indoor heat exchanger thermistors are used for controlling target discharge pipe 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 pipe temperature can be obtained.
Page 88: Cooling Only Model
Function of Thermistor SiBE12-933_A Cooling Only Model Expansion valve Compressor (R4688) A Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge pipe 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 pipe temperature can be obtained.
Page 89: Control Specification
SiBE12-933_A Control Specification 3. Control Specification Mode Hierarchy Outline There are two modes; the mode selected in user’s place (normal air conditioning mode) and forced operation mode for installation and providing service. Detail 1. For heat pump model There are following modes; stop, cooling (includes drying), heating (include defrosting) Air conditioner control mode Forced operating mode Forced cooling (for Pump Down Operation)
Page 90: Frequency Control
Control Specification SiBE12-933_A Frequency Control Outline Frequency that corresponds to each room’s capacity is determined according to the difference between the target temperature and the temperature of each room. The function is explained as follows. 1. How to determine frequency 2.
Page 91 SiBE12-933_A Control Specification For Cooling Only Model 1. Determine command frequency Command frequency is determined in the following order of priority. 1.1 Limiting frequency by drooping function Input current, discharge pipes, freeze prevention, dew prevention, fin thermistor temperature. 1.2 Indoor frequency command 2.
Page 92 Control Specification SiBE12-933_A 3. Limit of frequency variation width When the difference between input current and input current drooping value is less than 1 A, the frequency increase width must be limited. 4. Frequency management when other controls are functioning When each frequency is drooping;...
Page 93: Controls At Mode Changing / Start-Up
SiBE12-933_A Control Specification Controls at Mode Changing / Start-up 3.3.1 Preheating Operation Outline Operate the inverter in the open phase operation with the conditions including the preheating command from the indoor, the outdoor air temperature and discharge pipe temperature. Detail Preheating ON Condition When outdoor air temperature is below 10.5ºC and discharge pipe temperature is below 10.5ºC, inverter in open phase operation starts.
Page 94: Compressor Protection Function
Control Specification SiBE12-933_A 3.3.5 Compressor Protection Function When turning the compressor from OFF to ON, the upper limit of frequency is set as follows. (The function is not used when defrosting.) (Hz) Frequency (sec.) Time (R14042) 40 class 50 class Unit seconds Function and Control...
Page 95: Discharge Pipe Temperature Control
SiBE12-933_A Control Specification Discharge Pipe Temperature Control Outline The discharge pipe temperature is used as the compressor's internal temperature. If the discharge pipe temperature rises above a certain level, the operating frequency upper limit is set to keep this temperature from going up further. Detail Divide the Zone A°C...
Page 96: Freeze-Up Protection Control
Control Specification SiBE12-933_A Freeze-up Protection Control Outline During cooling operation, the signals being sent from the indoor unit allow the operating frequency limitation and then prevent freezing of the indoor heat exchanger. (The signal from the indoor unit must be divided into the zones as the followings. Detail Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 seconds from...
Page 97: Fan Control
SiBE12-933_A Control Specification 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 98: Defrost Control
Control Specification SiBE12-933_A 3.10 Defrost Control Outline Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor heat exchanger temperature must be more than a certain value to finish. Detail Conditions for Starting Defrost The starting conditions is determined with the outdoor temperature and the outdoor heat exchanger temperature.
Page 99: Electronic Expansion Valve Control
SiBE12-933_A Control Specification 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 100 Control Specification SiBE12-933_A 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 101 SiBE12-933_A Control Specification 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. 3.11.2 Pressure Equalization Control When the compressor is stopped, the pressure equalization control is activated. The electronic expansion valve opens, and develops the pressure equalization.
Page 102 Control Specification SiBE12-933_A Detail Detect Disconnection If a 780-second timer for open control becomes over, the following adjustment must be made. 1. When the operation mode is cooling When the discharge pipe temperature is lower than the outdoor heat exchanger temperature, the discharge pipe thermistor disconnection must be ascertained.
Page 103: Malfunctions
SiBE12-933_A Control Specification 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. Radiation fin thermistor 4. Gas pipe thermistor 5.
Page 104: Additional Function
Control Specification SiBE12-933_A Detail Judgment by Input Current When an output frequency is exceeds 51 Hz (40 class) or 48 Hz (50 class) and the input current is less than specified value, the adjustment is made for refrigerant shortage. Judgment by Discharge Pipe Temperature When discharge pipe temperature is higher than 101°C, the electronic expansion value opening is 450 plus (max.) and the adjustment is made for refrigerant shortage.
Page 105: Part 5 Operation Manual
SiBE12-933_A Part 5 Operation Manual 1. System Configuration................96 1.1 Operation Instructions ................96 2. Instruction....................97 2.1 ATXS, ATX, FTXG, CTXG, ATXG, FDK(X)S, FLK(X)S Series ....97 2.2 FTXS, FVXS Series................128 2.3 FFQ Series ...................152 Operation Manual...
Page 106: System Configuration
System Configuration SiBE12-933_A 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 107: Instruction
SiBE12-933_A Instruction 2. Instruction ATXS, ATX, FTXG, CTXG, ATXG, FDK(X)S, FLK(X)S Series 2.1.1 Manual Contents and Reference Page Wall Mounted Type Model Series FTXG25/35E, CTXG50E ATXS20-50G ATX20-35G ATXG25-50E Read Before Operation 100 ★ 3 Remote Controller Operation AUTO, DRY, COOL, HEAT, FAN Operation ★...
Page 108: Remote Controller
Instruction SiBE12-933_A 2.1.2 Remote Controller ATXS 20/25/35/42/50 G Remote Controller < ARC433A85 > 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 airflow rate setting. •...
Page 109 SiBE12-933_A Instruction ATX 20/25/35 G Remote Controller < ARC433A89 > 1. Signal transmitter: 8. FAN setting button: • It sends signals to the indoor unit. • It selects the airflow rate setting. 2. Display: 9. SWING button: • It displays the current settings. •...
Page 110 Instruction SiBE12-933_A FTXG 25/35 E, ATXG 25/35/50 E, CTXG 50 E 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: •...
Page 111 SiBE12-933_A Instruction FDK(X)S 50 C, FDK(X)S 25/35 EA Remote Controller < ARC433B69, B76 > 1. Signal transmitter: 7. MODE selector button: • It sends signals to the indoor unit. • It selects the operation mode. 2. Display: (AUTO/DRY/COOL/HEAT/FAN) • It displays the current settings. 8.
Page 112 Instruction SiBE12-933_A FLK(X)S 25/35/50 BA Remote Controller < ARC433B67, B68 > 1. Signal transmitter: 7. MODE selector button: • It sends signals to the indoor unit. • It selects the operation mode. 2. Display: (AUTO/DRY/COOL/HEAT/FAN) • It displays the current settings. 8.
Page 113 SiBE12-933_A Instruction 2.1.3 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 114 Instruction SiBE12-933_A 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 115: Adjusting The Airflow Direction
SiBE12-933_A Instruction 2.1.4 Adjusting the Airflow Direction ATXS 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 116 Instruction SiBE12-933_A 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 117 SiBE12-933_A Instruction ATX 20/25/35 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 118 Instruction SiBE12-933_A To start COMFORT AIRFLOW operation 3. Press “COMFORT AIRFLOW button”. • The flap position will change, preventing air from blowing directly on the occupants of the room. • “ ” is displayed on the LCD. • Airflow rate is set to “AUTO”. <COOL/DRY>...
Page 119: Adjusting The Air Flow Direction
SiBE12-933_A Instruction FTXG 25/35 E, CTXG 50 E, ATXG 25/35/50 E Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button ”. • “ ”...
Page 120 Instruction SiBE12-933_A 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 SiBE12-933_A Instruction FLK(X)S 25/35/50 BA 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 Instruction SiBE12-933_A 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: Comfort Airflow Operation
SiBE12-933_A Instruction 2.1.5 COMFORT AIRFLOW Operation COMFORT AIRFLOW Operation The flow of air will be in the upward direction while in cooling mode and in the downward direction while in heating mode, which will provide a comfortable wind that will not come in direct contact with people. To start COMFORT AIRFLOW operation 1.
Page 124: Powerful Operation
Instruction SiBE12-933_A 2.1.6 POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity. To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20minutes. Then the system automatically operates again with the previous settings which were used before POWERFUL operation.
Page 125: Outdoor Unit Quiet Operation
SiBE12-933_A Instruction 2.1.7 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. To start OUTDOOR UNIT QUIET operation 1.
Page 126: Econo Operation
Instruction SiBE12-933_A 2.1.8 ECONO Operation ATXS 20/25/35/42/50 G ECONO Operation ECONO operation is a function which enables efficient operation by limiting the maximum power consumption value. To start ECONO operation 1. Press “ECONO button”. • “ ” is displayed on the LCD. To cancel ECONO operation 1, 2...
Page 127 SiBE12-933_A Instruction ATX 20/25/35 G ECONO Operation ECONO operation is a function which enables efficient operation by limiting the maximum power consumption value. To start ECONO operation 1. Press “ECONO button”. • “ ” is displayed on the LCD. To cancel ECONO operation 2.
Page 128 Instruction SiBE12-933_A 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 129 SiBE12-933_A Instruction What’s the HOME LEAVE operation? Is there a set temperature and air flow rate which is most comfortable, a set temperature and air flow rate which you use the most? HOME LEAVE operation is a function that allows you to record your favorite set temperature and air flow rate.
Page 130: Intelligent Eye Operation
Instruction SiBE12-933_A 2.1.10 INTELLIGENT EYE Operation ATXS 20/25/35/42/50 G INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “COMFORT/SENSOR button” and select “ ” on the LCD. • Each time the “COMFORT/SENSOR button” is pressed a different setting option is displayed on the LCD.
Page 131 SiBE12-933_A Instruction INTELLIGENT EYE Operation “INTELLIGENT EYE” is useful for Energy Saving Energy saving operation • Change the temperature –2°C in heating / +2°C in cooling / +2°C in dry mode from set temperature. • Decrease the air flow rate slightly in FAN mode only. If no presence detected in the room for 20 minutes.
Page 132 Instruction SiBE12-933_A FTXG 25/35 E, CTXG 50 E, ATXG 25/35/50 E INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ” is displayed on the LCD. To cancel the INTELLIGENT EYE operation...
Page 133 SiBE12-933_A 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 134: Timer Operation
Instruction SiBE12-933_A 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 135: To Use On Timer Operation
SiBE12-933_A Instruction To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. 1. Press “ON TIMER button”. 6:00 is displayed. blinks. 2. Press “TIMER Setting button” until the time setting reaches the point you like.
Page 136: Note For Multi System
Instruction SiBE12-933_A 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 present but inactive or not present.
Page 137 SiBE12-933_A 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 138: Ftxs, Fvxs Series
Instruction SiBE12-933_A 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 Remote Controller Operation AUTO, DRY, COOL, HEAT, FAN Operation ★ 1 Adjusting the Airflow Direction Comfort Airflow and INTELLIGENT EYE —...
Page 139 SiBE12-933_A Instruction 2.2.2 Remote Controller FTXS 20/25/35/42/50 G 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: •...
Page 140 Instruction SiBE12-933_A FVXS 25/35/50 F Remote Controller <Open the lid> < ARC452A1 > 1. Signal transmitter: 9. ECONO button: • It sends signals to the indoor unit. ECONO operation 2. Display: 10. SWING button: • It displays the current settings. •...
Page 141 SiBE12-933_A Instruction 2.2.3 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 142 Instruction SiBE12-933_A 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 143 SiBE12-933_A Instruction 2.2.4 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 144 Instruction SiBE12-933_A 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 2.4.
Page 145 SiBE12-933_A 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 146 Instruction SiBE12-933_A 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 147: Comfort Airflow And Intelligent Eye Operation
SiBE12-933_A Instruction 2.2.5 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 148 Instruction SiBE12-933_A 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 149 SiBE12-933_A 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 150 Instruction SiBE12-933_A 2.2.6 POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity. To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20minutes. Then the system automatically operates again with the previous settings which were used before POWERFUL operation.
Page 151: Quiet Operation
SiBE12-933_A Instruction 2.2.7 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. To start OUTDOOR UNIT QUIET operation 1.
Page 152 Instruction SiBE12-933_A 2.2.8 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 153 SiBE12-933_A Instruction 2.2.9 TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. To use OFF TIMER operation •...
Page 154 Instruction SiBE12-933_A To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. 1. Press “ON TIMER button”. 6:00 is displayed. blinks. 2. Press “SELECT button” until the time setting reaches the point you like.
Page 155 SiBE12-933_A Instruction 2.2.10 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 156 Instruction SiBE12-933_A 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 157 SiBE12-933_A 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 158 Instruction SiBE12-933_A 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...
Page 159 SiBE12-933_A 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 160 Instruction SiBE12-933_A 2.2.11 Note for Multi System Note for Multi System 〈〈 〉〉 What is a “Multi System”? This system has one outdoor unit connected to multiple indoor units. room Outdoor unit Selecting the operation mode room Living room 1. With the Priority Room Setting present but inactive or not present.
Page 161 SiBE12-933_A 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 162: Ffq Series
Instruction SiBE12-933_A FFQ Series TEST AVAILABLE TEST Operation Manual...
Page 163 NOTE remote remote controller controller • Contact your Daikin dealer in case of changing the combination or setting of group control and two remote controllers control system. NOTE • If the unit you purchased is controlled by a wireless remote controller, also refer to the Names and functions of parts ’...
Page 164: Safety Considerations
Instruction SiBE12-933_A 2. SAFETY CONSIDERATIONS concentration, an oxygen deficiency accident may happen. We recommend that you read this instruction For installation of separately sold component manual carefully before use to gain full advantage parts, ask a specialist. of the function of the air conditioner, and to avoid Be sure to use the separately sold component malfunction due to erroneous handling.
Page 165: Installation Site
SiBE12-933_A Instruction Do not expose animals and plants directly to DB: Dry bulb temperature (°C) the wind from the air conditioner. WB: Wet bulb temperature (°C) Adverse influence to animals and plants may The setting temperature range of the remote result.
Page 166: Switch And Display On The Remote Controller
This display shows the set temperature. • Operating procedure varies with heat pump type DISPLAY “ ” (FAN SPEED) and cooling only type. Contact your Daikin dealer This display shows the set fan speed. to confirm your system type. DISPLAY “...
Page 167 • The heating capacity of the air conditioner declines as the outside air temperature falls. • The movable limit of the flap is changeable. In such a case, use the air conditioner in Contact your Daikin dealer for details. combination with other heating systems. Operation Manual...
Page 168 Instruction SiBE12-933_A Press the AIR FLOW DIRECTION ADJUST button to select the air direction as following. PROGRAMMING TIME The AIR FLOW FLAP display swings as shown left and the Press the PROGRAMMING TIME button air flow direction continuously and set the time for stopping or starting varies.
Page 169 SiBE12-933_A Instruction • Do not place other heaters directly below the Fig. 1 indoor unit. They may deform due to the heat. • Never place objects near the air inlet and the air outlet of the unit. It may cause deterioration in the effect or stop in the operation.
Page 170 Instruction SiBE12-933_A 5. Shut the suction grille. Directly apply the type of detergent used for Refer to item No.1. cleaning ventilation fans or ovens, wait 10 minutes, and then rinse with water. 6. After turning on the power, press FILTER SIGN RESET button.
Page 171 It is necessary to clean operates in a mode different to what is shown the inside of the indoor unit. Ask your Daikin on the remote controller display. dealer for details on cleaning the unit. This When using a unit in a multi system, the operation requires a qualified service person.
Page 172: Trouble Shooting
Daikin dealer. Expansion and contraction of plastic parts II. If the system does not properly operate caused by temperature change makes this noise.
Page 173: Part 6 Service Diagnosis
SiBE12-933_A Part 6 Service Diagnosis 1. Caution for Diagnosis................164 2. Problem Symptoms and Measures .............166 3. Service Check Function ..............167 3.1 ARC433 Series..................167 3.2 ARC452 Series..................170 4. Troubleshooting ..................173 4.1 Error Codes and Description ..............173 4.2 Indoor Unit PCB Abnormality ...............174 4.3 Freeze-up Protection Control or High Pressure Control.......175 4.4 Fan Motor or Related Abnormality ............177 4.5 Thermistor or Related Abnormality (Indoor Unit)........181...
Page 174: Caution For Diagnosis
Caution for Diagnosis SiBE12-933_A 1. Caution for Diagnosis The operation lamp flashes when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation. 2.
Page 175 SiBE12-933_A Caution for Diagnosis Caution: Operation stops suddenly. (Operation lamp blinks.) Cause of above trouble could be "Operation mode butting". Check followings; Are the operation modes all the same for indoor units connected to Multi system outdoor unit? If not set all indoor units to the same operation mode and confirm that the operation lamp is not blinking.
Page 176: Problem Symptoms And Measures
Problem Symptoms and Measures SiBE12-933_A 2. Problem Symptoms and Measures Symptom Check Item Details of Measure Reference Page None of the units operates. Check the power supply. Check to make sure that the rated voltage is — supplied. Check the type of the indoor units. Check to make sure that the indoor unit type is —...
Page 177: Service Check Function
SiBE12-933_A Service Check Function 3. Service Check Function ARC433 Series 1. When the timer cancel button is held down for 5 seconds, “ 00 ” indication appears on the Check Method 1 temperature display section. TIMER CANCEL button CANCEL TIMER <...
Page 178 Service Check Function SiBE12-933_A Check Method 2 1. Press the center of the TEMP button and the MODE button simultaneously to enter the diagnosis mode. (R4272) The figure of the ten’s place blinks. (R4273) 2. Press the TEMP▲ or ▼ button and change the figure until you hear the sound of “beep” or “pi pi”.
Page 179 SiBE12-933_A Service Check Function 5. Press the TEMP▲ or ▼ button and change the figure until you hear the sound of “beep”. (R4277) 6. Diagnose by the sound. ★ “pi” : The figure of the ten’s place does not accord with the error code. ★...
Page 180: Arc452 Series
Service Check Function SiBE12-933_A ARC452 Series 1. When the timer cancel button is held down for 5 seconds, “ 00 ” indication appears on the Check Method 1 temperature display section. TIMER CANCEL button < ARC452 Series > (R11385) 2. Press the timer cancel button repeatedly until a long beep sounds. The code indication changes in the sequence shown below.
Page 181 SiBE12-933_A Service Check Function Check Method 2 1. Press the 3 buttons (TEMP▲, TEMP▼, MODE) simultaneously to enter the diagnosis mode. (R8381) The figure of the ten’s place blinks. (R8382) 2. Press the TEMP▲ or ▼ button and change the figure until you hear the sound of “beep” or “pi pi”.
Page 182 Service Check Function SiBE12-933_A 5. Press the TEMP▲ or ▼ button and change the figure until you hear the sound of “beep”. (R8383) 6. Diagnose by the sound. ★ “pi” : The figure of the ten’s place does not accord with the error code. ★...
Page 183: Troubleshooting
SiBE12-933_A Troubleshooting 4. Troubleshooting Error Codes and Description Reference Code Indication Description Page System Normal — U0★ Refrigerant shortage Over-voltage detection / low-voltage detection Outdoor unit PCB abnormality or signal transmission circuit abnormality Unspecified voltage (between indoor and outdoor units) Anti-icing function in other rooms Indoor Indoor unit PCB abnormality...
Page 184: Indoor Unit Pcb Abnormality
Troubleshooting SiBE12-933_A 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 185: Freeze-Up Protection Control Or High Pressure Control
SiBE12-933_A 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 186 Troubleshooting SiBE12-933_A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Check the air passage. Refer to P.215 Provide sufficient air passage. Is there any short-circuit? Check the intake air filter. Is it very dirty? Clean the air filter.
Page 187: Fan Motor Or Related Abnormality
SiBE12-933_A Troubleshooting Fan Motor or Related Abnormality 4.4.1 AC Motor Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Detection Malfunction When the detected rotation speed does not reach the demanded rotation speed of the target tap, and is less than 50% of the maximum fan motor rotation speed.
Page 188 Troubleshooting SiBE12-933_A 4.4.2 DC Motor Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Detection Malfunction When the detected rotation speed does not reach the demanded rotation speed of the target tap, and is less than 50% of the maximum fan motor rotation speed.
Page 189 SiBE12-933_A Troubleshooting Troubleshooting F(A)TXS20-50G, F(C)(A)TXG25-50E, FVXS25-50F Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn off the power supply Check No.01 and rotate the fan by hand. Refer to P.212 Does the fan rotate Replace the fan smoothly?
Page 190 Troubleshooting SiBE12-933_A ATX20-35G Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.18 Turn off the power. Refer to P.222 (Unplug the power cable or turn the breaker OFF.) ∗...
Page 191: Thermistor Or Related Abnormality (Indoor Unit)
SiBE12-933_A Troubleshooting Thermistor or Related Abnormality (Indoor Unit) C4 , C9 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 192: Front Panel Open / Close Fault
Troubleshooting SiBE12-933_A Front Panel Open / Close Fault Remote Controller Display Method of Malfunction Detection Malfunction The system is 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 193: Freeze-Up Protection Control
SiBE12-933_A Troubleshooting Freeze-up Protection Control Remote Controller Display Method of Indoor unit icing, during cooling operation, is detected by checking the temperatures sensed by the indoor unit heat exchanger thermistor and room temperature thermistor that are located in a Malfunction shut-down room.
Page 194 Troubleshooting SiBE12-933_A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.04 Refer to P.213 Check the wiring and piping. Check No.06 Wiring or piping out of Correct the wiring or piping Refer to P.215 spec? error.
Page 195: Ol Activation (Compressor Overload)
SiBE12-933_A Troubleshooting OL Activation (Compressor Overload) Remote Controller Display Method of A compressor overload is detected through compressor OL. Malfunction Detection Malfunction If the compressor OL is activated twice, the system is shut down. The error counter is reset if this or any other error does not occur during the following 60- Decision minute compressor running time (total time).
Page 196: Compressor Lock
Troubleshooting SiBE12-933_A Compressor Lock Remote Controller Display Method of Judging from current waveform generated when high-frequency voltage is applied to the Malfunction compressor. Detection Malfunction The system is shut down if the error occurs 16 times. Clearing condition: Continuous run for about 11 minutes (normal) Decision Conditions Supposed...
Page 197: Dc Fan Lock
SiBE12-933_A Troubleshooting 4.10 DC Fan Lock Remote Controller Display Method of A fan motor or related error is detected by checking the high-voltage fan motor rpm being Malfunction detected by the Hall IC. Detection Malfunction The fan does not start in 60 seconds even when the fan motor is running. The system is shut down if the error occurs 16 times.
Page 198: Input Overcurrent Detection
Troubleshooting SiBE12-933_A 4.11 Input Overcurrent Detection Remote Controller Display Method of An input overcurrent is detected by checking the power consumption value of outdoor unit with Malfunction the compressor running. Detection Malfunction The following input value (calculated from power consumption of outdoor unit) with the compressor running continues for 2.5 seconds.
Page 199 SiBE12-933_A 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 overcurrent 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 overcurrent, Refer to P.216 check the wires again.
Page 200: Discharge Pipe Temperature Control
Troubleshooting SiBE12-933_A 4.12 Discharge Pipe Temperature Control Remote Controller Display Method of The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the Malfunction temperature being detected by the discharge pipe thermistor. Detection Malfunction If the temperature being detected by the discharge pipe thermistor rises, the compressor stops. The temperature at which the compressor halts varies according to the frequency.
Page 201: High Pressure Control In Cooling
SiBE12-933_A Troubleshooting 4.13 High Pressure Control in Cooling Remote Controller Display Method of High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the Malfunction temperature being sensed by the heat exchanger thermistor exceeds the limit. Detection Malfunction Activated when the temperature being sensed by the heat exchanger thermistor rises above 65°C.
Page 202 Troubleshooting SiBE12-933_A 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.213 Check No. 07 Check No.06 Abnormal Change the air outlet grille Check the installation Refer to P.215 position.
Page 203: Compressor Sensor System Abnormality
SiBE12-933_A Troubleshooting 4.14 Compressor Sensor System Abnormality Remote Controller Display Method of Fault condition is identified by DC current which is detected before compressor startup. Malfunction Detection Malfunction When the DC current before compressor startup is other than 0.5 to 4.5 V (detected by converting the sensor output to voltage), or the DC voltage is 50 V or less.
Page 204: Position Sensor Abnormality
Troubleshooting SiBE12-933_A 4.15 Position Sensor Abnormality Remote Controller Display Method of A compressor startup failure is detected by checking the compressor running condition through Malfunction the position detection circuit. Detection Malfunction The compressor is not running in about 15 seconds after the compressor run command signal is sent.
Page 205 SiBE12-933_A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.08 Check the power supply Refer to P.217 Check No. 08 Check No.13 Check the discharge pressure. Refer to P.218 Abnormal Replace the stop valve.
Page 206: Dc Voltage / Dc Current Sensor Abnormality
Troubleshooting SiBE12-933_A 4.16 DC Voltage / DC Current Sensor Abnormality Remote Controller Display Method of DC voltage or DC current sensor system fault is identified based on the compressor operation Malfunction frequency and the input current detected by the product of DC current and DC voltage. Detection Malfunction When the compressor operation frequency is more than 52 Hz...
Page 207: Thermistor Or Related Abnormality (Outdoor Unit)
SiBE12-933_A Troubleshooting 4.17 Thermistor or Related Abnormality (Outdoor Unit) P4 , J3 , J6 , J8 , J9 , H9 Remote Controller Display Method of This type of error is detected by checking the thermistor input voltage to the microcomputer. Malfunction [A thermistor error is detected by checking the temperature.] Detection...
Page 208 Troubleshooting SiBE12-933_A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Turn on the power again. Refer to P.215 Error displayed Reconnect. again on remote controller? Connector or thermistor Reconnect.
Page 209: Electrical Box Temperature Rise
SiBE12-933_A Troubleshooting 4.18 Electrical Box Temperature Rise Remote Controller Display Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor off. Detection Malfunction With the compressor off, the radiation fin temperature is above 80°C. The error is cleared when the temperature drops below 70°C.
Page 210 Troubleshooting SiBE12-933_A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 (Precaution before turning on the power again) Make sure the power has been off for at least 30 seconds. Refer to P.215 WARNING Turn off the power and turn it on...
Page 211: Radiation Fin Temperature Rise
SiBE12-933_A Troubleshooting 4.19 Radiation Fin Temperature Rise Remote Controller Display Method of A radiation fin temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor on. Detection Malfunction If the radiation fin temperature with the compressor on is above 93°C, If a radiation fin temperature rise takes place 255 times successively, the system is shut Decision down.
Page 212 Troubleshooting SiBE12-933_A Troubleshooting Be sure to turn off power switch before WARNING Caution connect or disconnect connector, or Check No.06 To cool down the electricals, the parts damage may be occurred. outdoor unit fan gets started when Refer to P.215 (Precaution before turning on the power again) the radiation fin temperature rises above 75°C even when the air...
Page 213: Output Overcurrent Detection
SiBE12-933_A Troubleshooting 4.20 Output Overcurrent Detection Remote Controller Display Method of An output overcurrent 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 214 Troubleshooting SiBE12-933_A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. ∗ An input overcurrent may result from wrong internal wiring. If the wires have been disconnected and Check No.07 reconnected for part replacement, for example, and the system is interrupted by an input overcurrent, check the wires again.
Page 215: Refrigerant Shortage
SiBE12-933_A Troubleshooting 4.21 Refrigerant Shortage Remote Controller Display Method of Refrigerant shortage detection I : Malfunction Refrigerant shortage is detected by checking the power consumption value and the compressor running frequency. Detection Malfunction Refrigerant shortage detection I : Power consumption < 4578 / 256 (W/Hz) × Compressor running frequency – 638 (W) Decision However, when the status of running frequency >...
Page 216 Troubleshooting SiBE12-933_A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.04 Refer to P.213 Any thermistor Replace in position. ∗ Discharge pipe thermistor disconnected? ∗ Indoor / outdoor unit heat exchanger thermistor ∗...
Page 217: Over-Voltage Detection / Low-Voltage Detection
SiBE12-933_A Troubleshooting 4.22 Over-voltage Detection / Low-voltage Detection Remote Controller Display Method of An abnormal voltage rise (or drop) is detected by checking the over-voltage detection circuit or Malfunction DC voltage detection circuit. Detection Malfunction An over-voltage signal is fed from the over-voltage detection circuit to the microcomputer, or the voltage being detected by the DC voltage detection circuit is judged to be below 150V for Decision 0.1 second.
Page 218: Anti-Icing Function In Other Rooms / Unspecified Voltage (Between Indoor And Outdoor Units)
Troubleshooting SiBE12-933_A 4.23 Anti-icing Function in Other Rooms / Unspecified Voltage (between Indoor and Outdoor Units) UA , UH Remote Controller Display Method of A wrong connection is detected by checking the combination of indoor and outdoor units on the microcomputer.
Page 219: Outdoor Unit Pcb Abnormality Or Signal Transmission Circuit Abnormality
SiBE12-933_A Troubleshooting 4.24 Outdoor Unit PCB Abnormality or Signal Transmission Circuit Abnormality Remote Controller Display Method of 1. Detect within the program of the microcomputer that the program is operating normally. 2. When indoor-outdoor unit signal transmission can not be performed for more than 15 Malfunction seconds.
Page 220 Troubleshooting SiBE12-933_A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check indoor unit also, because a communication circuit fault may be caused by the problem related to the indoor unit. Check supply voltage Rated voltage? Rectify the power supply.
Page 221 SiBE12-933_A Troubleshooting Continued from the previous page Check No.10 Refer to P.217 Does LED A turn off? Check grounding Carry out grounding work. Grounded? The cause seems to be an Check No. 10 external factor other than Check the power supply failure of the outdoor unit waveform.
Page 222: Check
Check SiBE12-933_A 5. Check How to Check 5.1.1 Fan Motor Connector Output Check Check No.01 1. Check connector connection. 2. Check motor power supply voltage output (pins 4-7). 3. Check motor control voltage (pins 4-3). 4. Check rotation command voltage output (pins 4-2). 5.
Page 223: Electronic Expansion Valve Check
SiBE12-933_A Check 5.1.2 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. Match the EV unit number and the connector number. 2.
Page 224: Four Way Valve Performance Check
Check SiBE12-933_A 5.1.3 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 operation. Heating : Continuity S80 voltage at DC 220-240 V with Replace the outdoor unit compressor on?
Page 225: Thermistor Resistance Check
SiBE12-933_A Check 5.1.4 Thermistor Resistance Check Check No.06 Remove the connectors of the thermistors on the PCB, and measure the resistance of each thermistor using tester. The relationship between normal temperature and resistance is shown in the graph and the table below.
Page 226: Installation Condition Check
Check SiBE12-933_A 5.1.5 Installation Condition Check Check No.07 Installation condition check Check the allowable Abnormal dimensions of the air Change the position of the air suction and discharge grille or the discharge area. installation location. Normal Does the discharged air from other outdoor unit Change the position of the air cause an increase of...
Page 227: Discharge Pressure Check
SiBE12-933_A Check 5.1.6 Discharge Pressure Check Check No.08 Discharge pressure check High Replace the compressor. Is the stop valve open? Open the stop valve. Is the connection pipe Replace the pipe installed at deformed? the site. Dirty Are the heat exchanger Clean.
Page 228: Power Transistor Check
Check SiBE12-933_A 5.1.9 Inverter Units Refrigerant System Check Check No.11 Refrigerant system check Is the discharge thermistor Correct the problem. disconnected from the holder? Is the temperature of the four way valve Four way valve defective. suction pipe Replace the four way valve. abnormally high? Check for refrigerant leakage.
Page 229 SiBE12-933_A Check 5.1.11 “Inverter Checker” Check Check No.14 Characteristics If abnormal stop occurs due to compressor startup failure or overcurrent output when using inverter unit, it is difficult to judge whether it is caused by the compressor failure or other failure (control PCB, power module, etc.).
Page 230 Check SiBE12-933_A Step 3 Activate inverter test operation from the indoor unit. ATXS, ATX, FTXS, F(C)TXG, ATXG, FDK(X)S, FLK(X)S, FVXS models : 1) Turn the power on. 2) Select FAN operation with the [MODE] button on the remote controller. 3) Press the 3 buttons (TEMP , TEMP , MODE) simultaneously. ->...
Page 231: Hall Ic Check
SiBE12-933_A Check 5.1.12 Rotating Pulse Input on the Outdoor Unit PCB Check Check No.15 <Outdoor fan motor> Make sure that the voltage of 320 ± 30 V is applied. 1. Set operation off and power off. Disconnect the connector S70. 2.
Page 232 Check SiBE12-933_A 5.1.14 Indoor PCB Output Check Check No.18 (1) Check the connector for connection. (2) Check the motor power voltage is generated (between pins 2 and 3). S200 Phase U Free pin Free pin Phase V Free pin Free pin Phase W Free pin Free pin...
Page 233 SiBE12-933_A Check 5.1.15 Turning Speed Pulse on the Indoor Unit PCB Check Check No.19 (1) Check the connector for connection. (2) Turn the power on and stop the operation. (3) Check if the Hall IC generates the rotation pulse 4 times when the fan motor is manually rotated once (between the pins 1 and 3).
Page 234 Check SiBE12-933_A 5.1.16 Fan Motor Wire / Short Circuit Check Check No.20 (1) Check the connector for connection. (2) Turn the power off. Ω Ω (3) Check if each resistance at the phases U - V and V - W is 10 ~ 20 (between the pins 12 - 9, and between 9 - 6).
Page 235: Part 7 Removal Procedure
SiBE12-933_A Part 7 Removal Procedure 1. Outdoor Unit..................226 1.1 Removal of the Panels and Plates ............226 1.2 Removal of the Electrical Box ..............228 1.3 Removal of the PCB................233 1.4 Removal of the Sound Blanket.............238 1.5 Removal of the Outdoor Fan / Fan Motor..........240 1.6 Removal of the Thermistors ..............243 1.7 Removal of the Compressor..............245 1.8 Removal of the Four Way Valve / Electronic Expansion Valve ....247...
Page 236: Outdoor Unit
Outdoor Unit SiBE12-933_A 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. Handle Manufacturer's label (R7570) φ...
Page 237 SiBE12-933_A Outdoor Unit Step Procedure Points Remove the 4 screws When reassembling, make and remove the sure to fit the 4 hooks. discharge grille. (R7700) Remove the 2 screws The stop valve cover is of the stop valve cover united with the shelter. and remove it.
Page 238: Removal Of The Electrical Box
Outdoor Unit SiBE12-933_A 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 Fasten the wires with screws connecting wires on the terminal board.
Page 239 SiBE12-933_A Outdoor Unit Step Procedure Points Disconnect the For removal procedure of the connector for the fan lead wire for the fan motor, [S70] motor [S70]. refer to “Removal of the PCB”. (R7578) Release the lead wire for the fan motor. (R7579) Disconnect the [S91] : Gas pipe thermistor...
Page 240 Outdoor Unit SiBE12-933_A Step Procedure Points Disconnect the [S20] : Electronic expansion connectors [S20], [S21] valve EVA [S20] [S21] [S80] and [S80]. [S21] : Electronic expansion valve EVB [S80] : Four way valve (R7582) Release the wire clip The clip is push-mount type. from the electrical box.
Page 241 SiBE12-933_A Outdoor Unit Step Procedure Points Detach the discharge Meet the edge of the pipe thermistor. thermistor and the clip. Be careful not to lose the clip Clip for discharge pipe for the discharge pipe thermistor thermistor. Discharge pipe thermistor (R7586) Disconnect the [S90] : Thermistor ASSY...
Page 242 Outdoor Unit SiBE12-933_A Step Procedure Points Remove the screw in front of the electrical box. (R7590) Lift up the electrical box to remove. (R7591) Removal Procedure...
Page 243: Removal Of The Pcb
SiBE12-933_A Outdoor Unit 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 Remove the outer panels Preparation Electrical box (cover) and plates such as the top Remove the electrical box plate and the front panel.
Page 244 Outdoor Unit SiBE12-933_A Step Procedure Points Remove the 2 screws and release the one clip Temperature fuse harness to remove the radiation shield plate. Radiation shield plate (2) (R7600) Compressor harness Clip Hole (R7596) The clip is push mount type. (R7601) Cut off the clamp and disconnect the wire...
Page 245 SiBE12-933_A Outdoor Unit Step Procedure Points Remove the 7 screws in total to remove the PCB. (R7598) (R7602) Lift up the back side Make sure that the hooks of slightly and undo the the electrical box are placed hooks of the front. on the PCB.
Page 246 Outdoor Unit SiBE12-933_A Step Procedure Points (R7605) Lift up the control PCB Control PCB to remove. See page 54 for detail. (R7606) [S20] : Electronic expansion Release the terminals valve EVA from the temperature [S70] [S40] [S92] [S91] [S20] [S21] fuse and each terminal [S90] [S80]...
Page 247 SiBE12-933_A Outdoor Unit Step Procedure Points Remove the 2 screws of the radiation fin. (R7608) (R7609) Removal Procedure...
Page 248: Removal Of The Sound Blanket
Outdoor Unit SiBE12-933_A Removal of the Sound Blanket Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the electrical box 1. Remove the right side panel Remove the 6 screws to remove the right side panel.
Page 249 SiBE12-933_A Outdoor Unit Step Procedure Points 3. Remove the sound blanket Release the fixing strings, open the sound blanket (body) and pull it out. (R7613) Lift up the sound Since the piping ports are blanket (top-upper) to torn easily, remove the remove.
Page 250: Removal Of The Outdoor Fan / Fan Motor
Outdoor Unit SiBE12-933_A Removal of the Outdoor 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 1. Remove the outdoor fan Remove the washer fitted nut (M10) by an open-ended spanner to remove the outdoor fan.
Page 251 SiBE12-933_A Outdoor Unit Step Procedure Points The figure shows the arrangement of the fan motor lead wire. (R7622) Remove the one screw When assembling, make to remove the fan motor sure mark of the fan motor fixing plate. goes down. (R7623) (R7624) Take out the fan motor...
Page 252 Outdoor Unit SiBE12-933_A Step Procedure Points Turn the fun motor fixing plate backward and release the 2 fixing hooks of the lead wire. (R7626) Release the fan motor When assembling, put the lead wire. lead wire through the back of the motor (so as not to be entangled with the outdoor fan).
Page 253: Removal Of The Thermistors
SiBE12-933_A Outdoor Unit Removal of the Thermistors 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 assembly of Be careful not to lose the clip thermistor for the discharge pipe thermistor.
Page 254 Outdoor Unit SiBE12-933_A Step Procedure Points Cut off the clamp. (R7634) Open the putty and remove the each Thermistor (Liquid) thermistor. Room A [S91] : Gas pipe Thermistor (Gas) thermistor Room A Room A (Black) Room B (Gray) [S92] : Liquid pipe thermistor Room A (Black) Room B (Gray)
Page 255: Removal Of The Compressor
SiBE12-933_A 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 Remove the terminal Be careful so as not to burn Terminal cover cover.
Page 256 Outdoor Unit SiBE12-933_A Step Procedure Points There is a nut fixing the compressor. Warning Remove the nut with an Since it may happen that open-end spanner. refrigeration oil in the compressor catches fire, prepare wet cloth so as to extinguish fire immediately. Warning Ventilate when refrigerant leaks during the work.
Page 257: Removal Of The Four Way Valve / Electronic Expansion Valve
SiBE12-933_A Outdoor Unit Removal of the Four Way Valve / Electronic Expansion Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the sound blanket. Warning Be careful about the four way 1.
Page 258 Outdoor Unit SiBE12-933_A Step Procedure Points Before working, make Reassembling precautions sure that the refrigerant is 1. Use non-oxidizing brazing empty in the circuit. method. If nitrogen gas is not Be sure to apply nitrogen available, braze the parts replacement when speedily.
Page 259: Part 8 Trial Operation And Field Settings
SiBE12-933_A Part 8 Trial Operation and Field Settings 1. Pump Down Operation................250 2. Forced Cooling Operation Mode ............251 3. Trial Operation ..................252 3.1 Indoor Unit - ATX, ATXS, ATXG, F(C)TXG, FTXS, FDK(X)S, FLK(X)S, FVXS Series .................252 3.2 Indoor Unit - FFQ Series ..............254 4.
Page 260: Pump Down Operation
Pump Down Operation SiBE12-933_A 1. Pump Down Operation Outline In order to protect the environment, be sure to conduct pump down operation when relocating or disposing the unit. Detail 1) Remove the valve caps from the liquid stop valve and the gas stop valve at the pipes for rooms A and room B.
Page 261: Forced Cooling Operation Mode
2) Press the forced cooling operation ON/OFF button (SW1 or S1W) on the indoor unit again. Others The protection functions are prior to all others in the forced cooling operation. ex.Wall mounted type G-series ON/OFF button (SW1 or S1W) (R12779) Trial Operation and Field Settings...
Page 262: Trial Operation
Trial Operation SiBE12-933_A 3. Trial Operation Indoor Unit - ATX, ATXS, ATXG, F(C)TXG, FTXS, FDK(X)S, FLK(X)S, FVXS Series Outline 1. Measure the supply voltage and make sure that it falls in the specified range. 2. Trial operation should be carried out in either cooling or heating mode. 3.
Page 263 SiBE12-933_A Trial Operation ARC433 Series (1) Press the ON/OFF button to turn on the system. (2) Press the center of the TEMP button and the MODE button at the same time. (3) Press the MODE button twice. (“ T ” appears on the display to indicate that trial operation is selected.) (4) Press the MODE button and select operation mode.
Page 264: Indoor Unit - Ffq Series
Trial Operation SiBE12-933_A Indoor Unit - FFQ Series 3.2.1 Checkpoints for Trial Operation To carry out a trial operation, check the following: Check that the temperature setting of the remote controller is at the lowest level in cooling mode or use trial operation mode. Go through the following checklist: Checkpoints Cautions or warnings...
Page 265: Field Settings
SiBE12-933_A Field Settings 4. Field Settings RA Indoor Unit - ATX, ATXS, ATXG, F(C)TXG, FTXS, FDK(X)S, FLK(X)S, FVXS Series 4.1.1 Model Type Setting ARC452A1, ARC452A3 This remote controller is common to the heat pump model and cooling only model. Use the DIP switch on the remote controller to set the heat pump model or cooling only model.
Page 266 Field Settings SiBE12-933_A G-Series ADDRESS ADDRESS EXIST (R12216) < Floor Standing Type> 1) Remove the front grille. 2) Lift the sensor PCB fixing plate and remove the front shield plate. 3) Disconnect the connectors [S1] [S41] [S42]. 4) Remove the electric box (1 screw).
Page 267 SiBE12-933_A Field Settings < Floor / Ceiling Suspended Dual Type > Cut the jumper JA on PCB. ADDRESS JA EXIST (R11732) < Duct Connected Type > Cut the jumper JA on PCB. ADDRESS : JA EXIST ADDRESS (R10276) Wireless Remote (1) Remove the cover and take it off.
Page 268: Jumper And Switch Settings
Field Settings SiBE12-933_A 4.1.3 Jumper and Switch Settings Jumper Function When connected When cut (on indoor unit PCB) (factory set) Fan speed setting Fan speed setting ; Fan speed setting; “0” (The fan when compressor Remote controller stops.) stops for thermostat setting OFF.
Page 269: Indoor Unit - Ffq Series
SiBE12-933_A Field Settings Indoor Unit - FFQ Series 4.2.1 How to Change the Field Settings with the Wired Remote Controller Installation The field settings have to be changed with the remote controller according to the installation conditions. conditions Wired remote BRC1C61 controller Mode No.
Page 270 Field Settings SiBE12-933_A 4.2.2 How to Change the Field Settings with the Wireless Remote Controller Optional If optional accessories are mounted on the indoor unit, the indoor unit setting may have to be changed. accessories Refer to OH06-1 or the installation manual (optional handbook) for each optional accessory. Wireless remote BRC7E531W7(C/O), BRC7E530W7(H/P) controller...
Page 271 SiBE12-933_A Field Settings 4.2.3 Overview of the Field Settings Second code No. Mode First Description of the setting code No. 10 (20) Filter cleaning sign time Light Heavy — contamination contamination (Approx. 2,500hrs) (Approx. 1,250hrs) : factory setting 4.2.4 MAIN / SUB Setting when Using Two Remote Controllers Situation The MAIN / SUB setting is necessary when one indoor unit is controlled by two remote controllers.
Page 272: Outdoor Unit
Field Settings SiBE12-933_A Outdoor Unit 4.3.1 Jumper Settings Jumper Function When connected When cut (on outdoor unit (factory set) PCB) ECONO mode ECONO operation is ECONO operation is disabled. prohibition setting available. Maximum power Standard control The power input is limited to input limitation 1700 W.
Page 273: Maximum Power Input Limitation Setting
SiBE12-933_A Field Settings Maximum Power Input Limitation Setting Outline The Maximum Power Input Limitation needs to be set when the unit is installed. This function limits the power input of the unit to 1700W. This function is recommended for areas with circuit breakers of low-capacity. Detail 1) Remove the two screws.
Page 274: Application Of Silicon Grease To A Power Transistor And A Diode Bridge
Application of Silicon Grease to a Power Transistor and a Diode Bridge SiBE12-933_A 5. Application of Silicon Grease to a Power Transistor and a Diode Bridge Applicable All outdoor units using inverter type compressor for room air conditioner. Models When the printed circuit board (PCB) 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 radiation fin) of the power transistor and diode bridge.
Page 275: Part 9 Appendix
SiBE12-933_A Part 9 Appendix 1. Piping Diagrams..................266 1.1 Indoor Units ..................266 1.2 Outdoor Units ..................270 2. Wiring Diagrams..................272 2.1 Indoor Units ..................272 2.2 Outdoor Units ..................277 Appendix...
Page 276: Piping Diagrams
Piping Diagrams SiBE12-933_A 1. Piping Diagrams Indoor Units 1.1.1 Wall Mounted Type ATX20/25/35GV1B FTXS20/25/35/42G2V1B, ATXS20/25/35/42G2V1B INDOOR UNIT INDOOR UNIT HEAT EXCHANGER 7.0CuT 4.8CuT 6.4CuT THERMISTOR 7.0CuT ON HEAT EXCH. HEAT EXCHANGER 7.0CuT CROSS FLOW FAN FIELD PIPING THERMISTOR (6.4CuT) CROSS FLOW FAN ON HEAT EXCH.
Page 277 SiBE12-933_A Piping Diagrams CTXG50EV1BW(S), ATXG50EV1B INDOOR UNIT HEAT EXCHANGER 7.0CuT 7.0CuT THERMISTOR 7.0CuT ON HEAT EXCH 7.0CuT CROSS FLOW FAN FIELD PIPING (6.4CuT) FAN MOTOR FIELD PIPING 9.5CuT (12.7CuT) REFRIGERANT FLOW COOLING HEATING 4D050924 1.1.2 Duct Connected Type FDKS50CVMB, FDKS25EAVMB, FDKS35EAVMB FDXS50CVMB, FDXS25EAVMB, FDXS35EAVMB INDOOR UNIT (6.4CuT)
Page 278 Piping Diagrams SiBE12-933_A 1.1.3 Floor / Ceiling Suspended Dual Type FLKS25BAVMB, FLKS35BAVMB FLKS50BAVMB INDOOR UNIT INDOOR UNIT (9.5CuT) (6.4CuT) HEAT EXCHANGER HEAT EXCHANGER FIELD PIPING (6.4CuT) THERMISTOR SIROCCO FAN FIELD PIPING ON HEAT (6.4CuT) EXCH. SIROCCO FAN THERMISTOR ON HEAT FAN MOTOR EXCH.
Page 279 SiBE12-933_A Piping Diagrams 1.1.4 Floor Standing Type FVXS25FV1B, FVXS35FV1B FVXS50FV1B INDOOR UNIT INDOOR UNIT MUFFLER ASSY HEAT EXCHANGER MUFFLER ASSY HEAT EXCHANGER 6.4CuT 7.0CuT 6.4CuT 7.0CuT 6.4CuT 6.4CuT 6.4CuT THERMISTOR THERMISTOR ON HEAT ON HEAT EXCH. EXCH. 6.4CuT 6.4CuT 6.4CuT FIELD PIPING TURBO FAN FAN MOTOR FIELD PIPING...
Page 280: Outdoor Units
Piping Diagrams SiBE12-933_A Outdoor Units 1.2.1 Cooling Only 2MKS40H2V1B OUTDOOR UNIT OUTDOOR TEMPERATURE MOTOR OPERATED VALVE MUFFLER THERMISTOR BRANCH LIQUID PIPE LIQUID LINE WITH HEAT EXCHANGER FILTER MUFFLER THERMISTOR STOP VALVE PIPE 7.0CuT 6.4CuT 6.4CuT 6.4CuT 6.4CuT ROOM A (6.4 CuT) 7.0CuT BRANCH 6.4CuT...
Page 281: Heat Pump
SiBE12-933_A Piping Diagrams 1.2.2 Heat Pump 2AMX40G2V1B, 2MXS40H2V1B OUTDOOR UNIT OUTDOOR TEMPERATURE MOTOR OPERATED VALVE MUFFLER THERMISTOR BRANCH LIQUID PIPE LIQUID LINE WITH HEAT EXCHANGER FILTER MUFFLER THERMISTOR STOP VALVE PIPE 7.0CuT 6.4CuT 6.4CuT 6.4CuT 6.4CuT ROOM A (6.4 CuT) 7.0CuT BRANCH 6.4CuT...
Page 282: Wiring Diagrams
Wiring Diagrams SiBE12-933_A 2. Wiring Diagrams Indoor Units 2.1.1 Wall Mounted Type ATX20/25/35GV1B PCB 2 PCB 1 FIELD WIRING. TRANSMISSION LED1 GRN/YLW CIRCUIT LED2 RECTIFIER OUTDOOR MR10 CAUTION t° 3.15A NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS IPM200 SIGNAL TURNED OFF AND THEN BACK...
Page 283 SiBE12-933_A Wiring Diagrams FTXG25/35EV1BW(S), CTXG50EV1BW(S), ATXG25/35/50EV1B PCB2 LED4 LED3 LED2 SIGNAL RECEIVER GRN/YLW H4P H3P H2P WIRELESS FIELD WIRING. t° REMOTE GRN/YLW CONTROLLER PCB3 PCB1 TRANSMISSION CIRCUIT outdoor INTELLIGENT- CAUTION EYE SENSOR NOTE THAT OPERATION WILL 3.15A RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS RECTIFIER TURNED OFF AND THEN BACK...
Page 284 Wiring Diagrams SiBE12-933_A 2.1.2 Duct Connected Type FDKS50CVMB, FDKS25EAVMB, FDKS35EAVMB FDXS50CVMB, FDXS25EAVMB, FDXS35EAVMB PCB1 PCB2 V1TR 3.15A outdoor GRN / YLW FIELD WIRING. GRN / YLW 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...
Page 285 SiBE12-933_A Wiring Diagrams 2.1.4 Floor Standing Type FVXS25FV1B, FVXS35FV1B, FVXS50FV1B PCB2 PCB3 → RECTIFIER 3.15A S2W(4) 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 286 Wiring Diagrams SiBE12-933_A 2.1.5 Ceiling Mounted Cassette Type FFQ25B8V1B, FFQ35B8V1B, FFQ50B8V1B : CONNECTER DISCRIMINATION COLOUR FOR COMPONENTS. : CONNECTER COLOUR FOR COMPONENTS. : CONNECTER COLOUR FOR PRINTED CIRCUIT BOARD. t° IN CASE OF SIMULTANEOUS t° t° OPERATION SYSTEM INDOOR UNIT INDOOR UNIT (MASTER) (SLAVE)
Page 287: Outdoor Units
SiBE12-933_A Wiring Diagrams Outdoor Units 2.2.1 Cooling Only 2MKS40H2V1B indoor PCB1 C100 MRM20 IPM1 ROOM A HL1 FU3 MRM10 C74 C94 3.15A ROOM B C75 C95 3.15A 1C11 W V U MRCW S92 RED S91 WHT S20 WHT S21 RED W V U POWER SUPPLY...
Page 288 Wiring Diagrams SiBE12-933_A 2.2.2 Heat Pump 2AMX40G2V1B, 2MXS40H2V1B indoor PCB1 C100 MRM20 IPM1 ROOM A HL1 FU3 MRM10 C74 C94 ROOM B 3.15A C75 C95 3.15A 1C11 W V U MRCW S92 RED S91 WHT S20 WHT S21 RED W V U POWER SUPPLY 102°C...
Page 289 Daikin Industries, Ltd.’s products are manufactured for export to numerous countries throughout the Warning world. Daikin Industries, Ltd. does not have control over which products are exported to and used in a particular country. Prior to purchase, please therefore confirm with your local authorised importer, distributor and/or retailer whether this product conforms to the applicable standards, and is suitable for use, in the region where the product will be used.

Daikin G-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 Trial Operation and Field Settings

Part 9 Appendix

Quick Links

Troubleshooting

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Summary of Contents for Daikin G-Series

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