Fujitsu ARYA45LCTU - User Manual

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Summary

Unit Specifications

Electrical Data

Detailed electrical characteristics of the unit.

Noise Level

Sound pressure levels for indoor and outdoor units.

Compressor and Refrigerant

Information on the compressor type and refrigerant details.

Fan Motor Specifications

Specifications for indoor and outdoor fan motors.

Unit Dimensions

Physical dimensions of the indoor and outdoor units.

Unit Weight

Shipping and net weights for indoor and outdoor units.

Indoor Unit Dimensions

Dimensional Drawings

Detailed drawings with dimensions for the indoor unit.

Outdoor Unit Dimensions

Dimensional Drawings

Detailed drawings with dimensions for the outdoor unit.

Refrigerant System Diagram

System Flow

Diagram illustrating refrigerant flow in outdoor and indoor units.

Circuit Diagrams

Indoor Unit Wiring

Wiring diagram for the indoor unit and associated PCBs.

Outdoor Unit Wiring

Wiring diagram for the outdoor unit and associated PCBs.

Controller PCB (Main) Schematic

Schematic for the main controller PCB.

Transistor PCB (IPM) Schematic

Schematic for the transistor PCB (IPM).

Indoor PCB Circuit Diagram

Control Unit Wiring

Wiring details for the indoor unit control system.

Power Supply PCB Wiring

Wiring diagram for the power supply PCB assembly.

Controller PCB Assembly Wiring

Wiring diagram for the main controller PCB assembly.

Remote Control Unit Wiring

Wiring connections for the remote control unit.

Indoor Unit Controller PCB Schematic

Main PCB Details

Detailed schematic diagram of the indoor unit's main controller PCB.

Outdoor PCB Circuit Diagrams

Inverter Assembly Wiring

Wiring connections for the outdoor unit inverter assembly.

Power Supply PCB Wiring

Wiring diagram for the outdoor unit power supply PCB.

Capacitor PCB Wiring

Wiring diagram for the outdoor unit capacitor PCB.

Transistor PCB (IPM) Wiring

Wiring diagram for the outdoor unit transistor PCB.

Controller PCB (Main) Wiring

Wiring diagram for the outdoor unit main controller PCB.

Indicator PCB Wiring

Wiring diagram for the outdoor unit indicator PCB.

Outdoor Unit Controller PCB Assembly Part 1

Main PCB Schematic Details

Detailed schematic of the outdoor unit controller PCB.

Outdoor Unit Controller PCB Assembly Part 2

Main PCB Schematic Continuation

Continuation of the outdoor unit controller PCB schematic.

Outdoor Unit Transistor PCB Assembly

IPM Module Schematic

Detailed schematic of the outdoor unit transistor PCB (IPM).

Outdoor Unit Indicator PCB Assembly

LED and Switch Connections

Wiring and switch connections for the outdoor unit indicator PCB.

Outdoor Unit Capacitor PCB Assembly

Capacitor Circuit Details

Schematic diagram for the outdoor unit capacitor PCB.

Error Detection - Remote Control

Troubleshooting via Remote Control

Guide to identifying errors using the wired remote control display.

Indoor Unit Error Detection

Receiver Unit Display Troubleshooting

Identifying errors through lamp flashing on the receiver unit.

Error Detection - Outdoor Unit

Indicator PCB Error Codes

Error codes indicated by LED blinks on the outdoor unit indicator PCB.

Outdoor Unit Test Run

Test Run Procedure

Step-by-step guide for performing the outdoor unit test run.

Outdoor Unit Pump Down

Pump Down Procedure

Detailed steps for performing the refrigerant pump down operation.

Indoor Unit Parts List

Component Identification

Illustrated list of parts for the indoor unit.

Indoor Unit Assembly Details

Component Identification

Further illustrated list of parts for the indoor unit.

Indoor Unit Control Unit Parts

Control Unit Components

Illustrated parts list for the indoor unit's control unit.

Outdoor Unit Parts List

Exterior Components

Illustrated list of exterior parts for the outdoor unit.

Outdoor Unit Control Box Parts

Control Box Components

Illustrated parts list for the outdoor unit's control box.

Outdoor Unit Components

Internal Components

Illustrated list of internal components for the outdoor unit.

Indoor Unit Accessories

Accessory List

List of accessories available for the indoor unit.

Optional Parts

Exterior Optional Parts

Optional exterior parts with specifications and models.

Overview

This document provides a comprehensive service manual for the FUJITSU SPLIT TYPE AIR CONDITIONER, specifically for DUCT TYPE (50Hz) models ARYA45LCTU (Indoor Unit) and AOYA45LCTL (Outdoor Unit), which utilize R410A refrigerant.

The manual outlines the function description of the air conditioning system as a split-type unit designed for duct installation, providing both cooling and heating functionalities. It details the electrical, performance, and physical characteristics of both the indoor and outdoor units, along with circuit diagrams, error detection procedures, and parts lists.

Important technical specifications are meticulously detailed in the "SPECIFICATIONS" section. For ELECTRICAL DATA:

Type: Cooling & Heating
Indoor Unit: ARYA45LCTU
Outdoor Unit: AOYA45LCTL
Cooling Capacity: 12.0 kW
Heating Capacity: 13.3 kW
Power Source: 230 V 50 Hz
Running Current: Cooling 16.4 A, Heating 16.1 A
Input Watts: Cooling 3.74 kW, Heating 3.68 kW
E.E.R.: Cooling 3.21 kW/kW, Heating 3.61 kW/kW
Moisture Removal: 4.0 L/hr
Air Circulation (Indoor): 2,100 m³/hr
Air Circulation (Outdoor): Cooling 6,750 m³/hr, Heating 6,200 m³/hr
Maximum Current: Cooling 21.0 A, Heating 21.0 A

For NOISE LEVEL:

Indoor Unit: High 42 dB, Medium 38 dB, Low 32 dB, Quiet 28 dB
Outdoor Unit: Cooling 55 dB, Heating 55 dB

For COMPRESSOR AND REFRIGERANT:

Type: Hermetic type, Inverter, 6 poles, 3 phase, DC motor, Twin Rotary
Discrimination: N-TF30HD1A
Weight (with oil): 15.4 kg
Refrigerant Type: R410A
Precharged Refrigerant: 3,350 g
Max Pipe Length: 50 m
Max Pipe Height: 30 m
Full Charge (by pipe length): 20 m (3,350 g), 30 m (3,750 g), 40 m (4,150 g), 50 m (4,550 g)
Additional Charge: 40 g/m

For FAN MOTOR:

Indoor Unit (Discrimination MFG-45RVN): High 1,350 r.p.m., Medium 1,150 r.p.m., Low 910 r.p.m., Quiet 770 r.p.m.
Outdoor Unit (Discrimination MFE-45VVT): Upper fan Cooling 850 r.p.m., Heating 780 r.p.m.; Lower fan Cooling 800 r.p.m., Heating 750 r.p.m.

For DIMENSIONS:

Indoor Unit (H x W x D): 270 x 1,135 x 700 mm
Outdoor Unit (H x W x D): 1,290 x 900 x 330 mm

For WEIGHT:

Indoor Unit (Shipping / Net): 48 kg / 40 kg
Outdoor Unit (Shipping / Net): 94 kg / 86 kg

The manual also includes detailed refrigerant system diagrams and circuit diagrams for both indoor and outdoor units, including PCB circuit diagrams (Main PCB, Indicator PCB, Transistor PCB, Capacitor PCB, Power Supply PCB, Filter PCB) which are crucial for understanding the internal workings and for troubleshooting.

Usage features are primarily addressed through the "TEST RUN" and "PUMP DOWN" procedures. The "TEST RUN" section guides the user through a systematic check of the outdoor unit's installation and operation, including:

Verifying secure installation, gas leakage inspection, and proper insulation.
Checking correct cable connections and earth wire.
Ensuring no obstacles block air intake/outlet.
Confirming specified refrigerant amount and open stop valves.
Verifying power supply to the crankcase heater for at least 6 hours. The test run method involves specific button presses on the outdoor unit's indicator PCB to switch between standby, cooling, and heating test modes, with LED indicators providing feedback on the operational status.

The "PUMP DOWN" procedure is critical for maintenance features related to refrigerant handling. It outlines the steps to safely collect refrigerant before disconnecting any pipes or electrical cables. Key warnings are provided regarding electrical shock and abnormal pressure if procedures are not followed correctly. The process involves:

Checking that 3-way valves are open.
Turning on power.
Pressing the [PUMP DOWN] button for 3 seconds or more after 3 minutes of power on.
Observing LED display changes and fan/compressor operation.
Fully closing the 3-way valve on the liquid pipe side after approximately 3 minutes of compressor operation.
Tightly closing the 3-way valve on the gas pipe side when the LED display changes again.
Confirming successful pump down when fans and compressor stop automatically and the outdoor unit remains stopped until power is turned off. The manual also details how to stop pump down, restart it after an error, and perform a test run in "COOL" operation mode after pump down completion.

Maintenance features are further supported by extensive error detection capabilities. The system provides self-diagnosis through both wired remote control and the receiver unit display. For wired remote control:

Error codes (e.g., 01, 13, 26, 27 for Indoor signal error; 00 for Wired remote control abnormal; 02 for Indoor room thermistor error) are displayed on the set room temperature display as "EE" followed by the code. For receiver unit display (option):
Error contents are indicated by the flashing patterns of OPERATION, TIMER, and FILTER lamps (e.g., "off, 2 times, off" for Indoor signal error; "2 times, 2 times, off" for Indoor room thermistor error). The manual lists over 30 different error codes covering various components and operational issues, such as thermistor errors (room, pipe, heat exchanger, outdoor, discharge pipe, heat sink, compressor), float switch operation, fan errors, compressor location/temperature errors, pressure switch/sensor errors, inverter errors, communication errors, and PCB errors. The outdoor unit indicator PCB also provides error detection, with LEDs (POWER, ERROR, PUMP DOWN, LOW NOISE, PEAK CUT) blinking to indicate an error. Pressing the [Enter] button displays the error code, with the number of blinks of the "ERROR" LED corresponding to specific error types (e.g., 1 blink for Serial forward transfer error, 2 blinks for Discharge thermistor error, 18 blinks for Inverter error).

The manual concludes with detailed parts lists for both indoor and outdoor units, including descriptions and part numbers for major components (e.g., intake cover, main panel, drain pan, evaporator, fan motor, controller PCB, power supply PCB, compressor, valves, sensors, chokes, capacitors, transistors). Accessories such as hangers, special nuts, coupler heat insulation, binders, drain hose insulation, remote controls, and tapping screws are also listed with their applications and part numbers. Optional parts like square/round flanges, long-life filters, remote sensors, external control sets, and drain pump units are also detailed.