Fujitsu Inverter Multi Air Conditioner - Wall Mounted Type

This service manual provides detailed information for Fujitsu Inverter Multi Air Conditioners, Wall Mounted type.

Models Covered

Indoor Units: ASYA07LACM, ASYA09LACM, ASYA12LACM
Outdoor Units: AOYA18LAT3, AOYA24LAT3

The manual covers the following sections:

Specifications
Outline and Dimensions
Refrigerant System Diagram
Circuit Diagram
Indoor PCB Circuit Diagram
Outdoor PCB Circuit Diagram
Error Contents
Parts (Indoor Unit)
Parts (Outdoor Unit)
Standard Accessories

Specifications - Indoor Unit

Category	Details	ASYA07LACM	ASYA09LACM	ASYA12LACM
ELECTRICAL DATA	Cooling Capacity	2.3 kW	2.7 kW	3.5 kW
	Heating Capacity	2.7 kW	3.3 kW	4.0 kW
	Moisture Removal	0.8 L/hr	1.0 L/hr	1.2 L/hr
	Air Circulation High	500 m³/hr	550 m³/hr	580 m³/hr
FAN MOTOR	Power Source	230 V
	Discrimination	MFD-34ROM
	Fan Speed (cool / heat)	High speed: 1,140 / 1,140 r.p.m. Middle: 1,000 / 1,050 r.p.m. Low: 880 / 980 r.p.m. Quiet: 700 / 800 r.p.m.	High speed: 1,220 / 1,220 r.p.m. Middle: 1,060 / 1,110 r.p.m. Low: 900 / 1,040 r.p.m. Quiet: 720 / 830 r.p.m.	High speed: 1,280 / 1,320 r.p.m. Middle: 1,100 / 1,180 r.p.m. Low: 900 / 1,080 r.p.m. Quiet: 750 / 860 r.p.m.
	Noise Level	High Speed: 35 dB(A) Quiet: 21 dB(A)	High Speed: 38 dB(A) Quiet: 22 dB(A)	High Speed: 39 dB(A) Quiet: 23 dB(A)
MEASUREMENT	Dimensions (H x W x D)	275 x 790 x 215 mm
Weight (Gross / Net)	12 kg / 9 kg

Specifications - Outdoor Unit

Category	Details	AOYA18LAT3	AOYA24LAT3
ELECTRICAL SPECIFICATIONS	Type	Cooling & heating multi	Cooling & heating multi
	Model Name	AOYA18LAT3	AOYA24LAT3
	Cooling Capacity	5.4 kW	6.8 kW
	Heating Capacity	6.8 kW	8.0 kW
	Power Supply	(220V) - 230V - (240V)	(220V) - 230V - (240V)
	Frequency	50 Hz	50 Hz
	Running Current (Cooling / Heating)	5.9 A / 7.1 A	8.5 A / 8.8 A
INPUT	Cooling	1.35 kW	1.94 kW
INPUT	Heating	1.62 kW	2.00 kW
EER	Cooling	4.00 kW/kW	3.50 kW/kW
EER	Heating	4.20 kW/kW	4.00 kW/kW
AIR CIRCULATION HIGH	3,050 m³/hr	3,300 m³/hr
FAN MOTOR	Discrimination	MFE-60PO	MFE-60PO
FAN MOTOR	High Speed (Cool / Heat)	730 r.p.m. / 660 r.p.m.	780 r.p.m. / 780 r.p.m.
NOISE LEVEL	Cool	48 dB(A)	50 dB(A)
NOISE LEVEL	Heat	49 dB(A)	51 dB(A)
MEASUREMENT	Dimensions (H x W x D)	700 x 900 x 330 mm
Weight (Net / Gross)	55 kg / 63 kg
COMPRESSOR AND REFRIGERANT	Compressor Type	Hermetic type, Inverter, 4 poles, 3-phase, DC motor, Twin Rotary
	Discrimination	DA150A1F-20NA
	Weight (with oil)	10.0 kg
	Refrigerant	2,200 g
	Refrigerant Type	R410A
	Full Charge Amount	30 m: 2,200 g 40 m: 2,400 g 50 m: 2,600 g
	Additional Charge	20 g/m
PIPE SPECIFICATIONS	Chargeless	30 m
Max Pipe Length (each unit)	25 m
Max Pipe Length (total)	50 m
Max Elevation (between indoor units)	10 m
Max Elevation (between indoor and outdoor)	15 m
Min. Pipe Length (each unit)	5 m

Dimensions - Indoor Unit

The indoor unit dimensions are:

Width: 790 mm
Height: 275 mm
Depth: 215 mm

Dimensions - Outdoor Unit

The outdoor unit dimensions are:

Width: 900 mm
Height: 700 mm
Depth: 400 mm
Side Panel Depth: 330 mm
Air flow is indicated from the front.

Refrigerant System Diagram

The refrigerant system diagram illustrates the flow of refrigerant between the outdoor unit and multiple indoor units (A, B, C). Key components include:

Outdoor Unit: Compressor, Muffler, Accumulator, Pressure Switches (A, B), 4-way valve, Heat Exchanger, Receiver Tank, Strainer, Distributor.
Connecting Pipes: Expansion Valves, Pipe Thermistors, Strainers, 3-way valves, 2-way valves.
Indoor Units: Room Thermistors, Heat Exchangers.

The system allows for both cooling and heating modes, controlled by the 4-way valve and expansion valves.

Circuit Diagrams

The document contains detailed circuit diagrams for both the Indoor Unit and Outdoor Unit, illustrating the electrical connections between various components such as:

Indoor Unit: Controller PCB Assembly (Main PCB), Fan Motor, Step Motor, Pipe Temperature Thermistor, Room Temperature Thermistor, Thermal Fuse, Varistor, Display Board, and connections to the outdoor unit.
Outdoor Unit: DC Compressor, DC Fan Motor, IPM, Diode Bridge, 4-Way Valve, Construction Check Switch, Pressure Switches, Expansion Valves (A, B, C), various Thermistors (Heatsink, Compressor, Outdoor, Pipe, Discharge), 2-way and 3-way Valves, Power Supply PCB Assembly, Controller PCB Assembly (Main PCB), EMI Filters, Choke Coil, and terminals for AC input and output to indoor units.
PCB Diagrams: Detailed diagrams for the Indoor Controller PCB Assembly and Outdoor Controller PCB Assembly show connections to various sensors, motors, valves, and communication interfaces.

Error Contents

The manual lists potential error codes and their corresponding symptoms and LED indications for both indoor and outdoor units.

Indoor Unit Error Contents

Errors are categorized by type (e.g., Communication error, Indoor unit temperature error, Outdoor unit temperature error, Indoor unit control system error, Outdoor unit control system error, Refrigerant system error, Added function error, Indoor unit connect error) and described by the number of flashes or states (off, blinking) of the operation, timer, air clean, and coil dry LEDs.

Outdoor Unit LED Indications

Specific LED (A, B, C) indications for outdoor unit errors are provided, detailing the number of times a LED flashes or if it is off, for errors such as communication errors, temperature sensor errors, valve errors, compressor errors, fan motor errors, IPM errors, and microcomputer errors.

Parts Lists

Detailed parts lists with descriptions and part numbers are provided for both indoor and outdoor units, including exploded views for identification.

Indoor Unit Parts

Front Panel Assembly: Includes Front Panel Assy, Intake Grille Assy, Air Filter, Front Panel, Clamper (Grille), Air Clean Filter Assy, Electric Filter Holder, Remote Control Unit, and Remote Control Holder.
Casing Assembly: Includes Casing Assy, Casing Cover B, Casing Cover F, Louver Holder, Drain Hose Assy, Drain Cap Assy, Louver U Assy, and Louver Z Assy.
Main Components: Includes Gear A, Crossflow Fan Assy, Clamp (Motor), Shaft Holder C Assy, Wire Clamper, Holder (Room Thermistor), Cover (Switch), Evaporator Total Assy, Joint Pipe Assy, Insulation (Pipe) E, Holder (Evaporator) L/R, Water Seal, Terminal, Step Motor, Fan Motor Assy, and various Controller PCB Assemblies and Thermistors.

Outdoor Unit Parts

External Components: Includes Top Panel Sub Assy, Front Panel, Fan Guard, Grip Side, Service Panel Sub Assy, Right Panel, Grip, Valve Cover Sub Assy, Propeller Fan Assy, Fan Motor, Condenser A Assy, Base Assy, Cap Foot, Protective Net, and Emblem Rear.
Internal Components: Includes Separate Wall Assy, Coil Choke, Compressor Assy, 4-Way Valve Assy, Inlet/Outlet Pipe Assy, Pressure Switches (A, B), Accumulator Assy, Receiver Tank Assy, Valve Plate Assy, Pulse Motor Valve, 3-Way Valve Assy, 2-Way Valve Assy, Solenoids, Thermistors, Compressor Plate Assy, Water Seal Plate, Thermo Holder, Compressor Covers (A, B, C), Inverter Boxes (A, B, C, D, Duct, Cover), Fuse Holders, Fuses, Terminals, ACTPM, Power Supply PCB Assy, Controller PCB Assy, and Thermo Holders.

Standard Accessories

The following accessories are supplied with the units:

Indoor Unit Accessories

Wall hook bracket (1 pc) - For indoor unit installation
Remote control unit (1 pc) - For air conditioner operation
Battery (penlight) (2 pcs) - For remote control unit
Cloth tape (1 pc) - For indoor unit installation
Remote control unit holder (1 pc) - For use as remote control unit holder
Tapping screw (big) (8 pcs) - For wall hook bracket installation
Tapping screw (small) (2 pcs) - For remote control unit holder installation

Outdoor Unit Accessories

Drain pipe (1 pc) - For outdoor unit drain piping work
Drain cap (2 pcs)
Adapter assy (1 pc) - For connecting models 9-12 to outdoor port A
Putty (1 pc) - For sealing

Document Reference

Document Number: 0703G3212

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