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Toshiba RAS-M10UKCV-E User Manual

Toshiba RAS-M10UKCV-E
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SERVICE MANUAL
FILE NO. SVM-03016
AIR-CONDITIONER
SPLIT TYPE
RAS-M10UKCV-E, RAS-M13UKCV-E, RAS-M16UKCV-E /
RAS-3M23YACV-E
R410A
June, 2003
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Toshiba RAS-M10UKCV-E Specifications

General IconGeneral
Cooling Capacity2.5 kW
Heating Capacity3.2 kW
Energy Efficiency Class (Cooling)A++
Energy Efficiency Class (Heating)A+
RefrigerantR32
SEER6.1
SCOP4.0
Power Supply220-240V, 50Hz
Coefficient of Performance (COP)4.0
Indoor Unit Weight8 kg
TypeSplit Type
Dimensions (Outdoor Unit)660 x 240 x 530 mm

Summary

SPECIFICATIONS

1-1. Specifications

Detailed specifications for indoor and outdoor units, including electrical characteristics and dimensions.

1-2. Specifications of Performance When Each Indoor Unit is Combined with Other Unit

Performance specifications for various indoor unit combinations with the outdoor unit.

1-2-1. Operation Characteristic Curve

Graph showing the operation characteristic curve of the air conditioner.

1-2-2. Capacity Variation Ratio According to Temperature

Graphs illustrating how cooling capacity varies with indoor and outdoor temperatures.

1-3. Electrical Data

REFRIGERANT R410A

2-1. Safety During Installation/Servicing

Safety precautions for installation and servicing of R410A refrigerant systems.

2-2. Refrigerant Piping Installation

Details on approved piping materials and joint types for refrigerant installation.

2-2-2. Processing of Piping Materials

Procedures for cutting and processing piping materials for installation.

2-2-2. Flare Connecting Procedures and Precautions

Procedures and precautions for connecting flare joints, including torque specifications.

2-3. Tools

2-3-1. Required Tools

List of required tools for R410A installation and servicing, with compatibility notes.

2-4. Recharging of Refrigerant

2-4-1. Configuration of refrigerant charging

Diagram and step-by-step guide for recharging the air conditioner with refrigerant.

2-5. Brazing of Pipes

2-5-1. Materials for Brazing

Information on various brazing filler materials and their applications.

2-5-2. Flux

Explanation of flux usage, characteristics, and types for brazing.

2-5-3. Brazing

Method for brazing pipes while preventing oxidation using nitrogen gas.

CONSTRUCTION VIEWS

3-1. Indoor Unit

Exploded view and dimensional drawings of the indoor unit.

3-2. Outdoor Unit

Exploded view and dimensional drawings of the outdoor unit.

WIRING DIAGRAM

4-1. Indoor Unit

Wiring diagram for the indoor unit, including color codes and basic troubleshooting.

4-2. Outdoor Unit

Wiring diagram for the outdoor unit, showing electrical connections.

SPECIFICATIONS OF ELECTRICAL PARTS

5-1. Indoor Unit

List of electrical components for the indoor unit with their specifications.

5-2. Outdoor Unit

List of electrical components for the outdoor unit with their specifications.

REFRIGERANT CYCLE DIAGRAM

6-1. Refrigerant Cycle Diagram

Diagram illustrating the refrigerant flow within the air conditioning system.

6-2. Operation Data

CONTROL BLOCK DIAGRAM

7-1. Indoor Unit

Block diagram showing the control logic and components of the indoor unit.

7-2. Outdoor Unit (Inverter Assembly)

Block diagram illustrating the control system of the outdoor unit's inverter assembly.

OPERATION DESCRIPTION

8-1. Outline of Air Conditioner Control

General overview of the air conditioner's control system and capacity variable features.

8-1-1. Capacity Control

Explanation of how cooling capacity is controlled by adjusting compressor motor speed.

8-1-2. Current Release Control

Description of the control mechanism to prevent overcurrent by reducing motor speed.

8-1-3. Power Factor Improvement Control

Explanation of power factor improvement control for reducing power consumption.

8-1-4. Prevent-Freezing Control

How the system prevents freezing of the indoor heat exchanger.

8-1-5. P. M. V. (Pulse Modulating Valve)

Function of the Pulse Modulating Valve in controlling refrigerant flow.

8-1-6. Louver Control

How the vertical air flow louvers are controlled and set.

8-1-7. Indoor Fan Control (DC Fan Motor)

Explanation of the indoor fan motor control system and speed settings.

8-1-8. Outdoor Fan Control (DC Fan Motor)

Control of the outdoor fan motor speed and protection mechanisms.

8-2. Description of Operation Circuit

Explanation of operational circuits and modes.

8-2-3. DRY Operation

How the unit operates in DRY mode, prioritizing dehumidifying.

8-2-4. Auto Operation

How the operation mode is selected automatically based on outdoor temperature.

Temporary Operation

8-3-1. Temporary Auto Operation

How to start and manage temporary auto operation mode.

8-3-2. Temporary Cooling Operation

How to start and manage temporary cooling operation mode.

Auto Restart Function

8-4-1. How to Set the Auto Restart

Step-by-step instructions on how to enable the auto restart function.

8-4-2. How to Cancel the Auto Restart

Step-by-step instructions on how to disable the auto restart function.

8-4-3. In Case of Power Failure during the Timer Operation

How power failures affect ON/OFF timer reservations.

Remote control

8-5-1. Remote control and its functions

Overview of the remote control buttons and their associated functions.

8-5-2. Names and functions of indications on remote control

Explanation of the symbols and indicators displayed on the remote control.

INSTALLATION PROCEDURE

9-1. Safety Cautions

General safety precautions and warnings for installing the air conditioner.

9-1-1. Installation/Servicing Tools

List of tools and their compatibility for R410A installation and servicing.

9-2. Indoor Unit

List of accessories and installation parts included with the indoor unit.

9-2-2. Installation Place

Guidelines for selecting the appropriate installation place for the indoor unit.

9-2-3. Cutting a Hole and Mounting Installation Plate

Steps for cutting wall holes and mounting the indoor unit installation plate.

9-2-4. Electrical Work

Requirements for electrical work, including power supply and wiring.

9-2-5. Wiring Connection

Procedure for connecting the cable between indoor and outdoor units.

9-2-6 Piping and Drain Hose Installation

Instructions for installing piping and drain hoses, including drain cap procedures.

9-2-6 Indoor Unit Fixing

Steps for securely fixing the indoor unit onto the installation plate.

9-2-7 Drainage

Guidelines for ensuring proper drainage and preventing water leakage.

9-2-8. Setting of Remote Controller Selector Switch

Procedure for setting the remote controller selector switch for multi-room setups.

9-2-9. Check and Test Operation

Procedures for checking and testing the unit after installation, including a cooling operation test.

9-3. Outdoor Unit

9-3-1. Accessory and Installation Parts

List of accessories and installation manuals for the outdoor unit.

9-3-2. Refrigerant Piping

Specifics on using copper pipes and differences in flare nuts for refrigerant piping.

9-3-3. Installation Place

Guidelines for selecting a suitable installation location for the outdoor unit.

9-3-4. Optional Installation Parts (Local Supply)

List of optional installation parts available locally.

9-3-5. Optional Installation Parts (Separate Sold)

List of optional installation parts sold separately.

9-3-6. Refrigerant Piping Connection

Detailed steps for connecting refrigerant piping, including flaring and sizes.

9-3-7. Installation

Installation guidelines regarding clearances and securing the outdoor unit.

Tightening connection

Procedure and torque values for tightening pipe connections.

9-3-8. Evacuating

Procedure for evacuating air from the system using a vacuum pump.

9-3-9. Electrical Work

Electrical work procedures for connecting power supply and wiring.

9-3-10. Check and Test Operation

Procedures for checking connections and performing a test operation.

9-3-11. Useful Functions

How to use LED indications for self-diagnosis of the outdoor unit.

9-3-12. Miswiring (Mispiping) Check

Procedure to check for miswiring and mispiping in multi-room installations.

HOW TO DIAGNOSE THE TROUBLE

10-1. First Confirmation

Initial checks for power supply, voltage, and normal operation status.

10-2. Primary Judgment

Methods for diagnosing troubles: LED indication, remote control, and symptoms.

10-3. Judgment by Flashing LED of Indoor Unit

Interpreting indoor unit LED flashes for self-diagnosis of faults.

10-4. Self-Diagnosis by Remote Control (Check Code)

How to use the remote control in service mode to perform self-diagnosis.

10-4-2. Operation Control by Rated Frequency in Service Mode

How the unit operates at rated frequency in service mode for testing.

10-4-3. Caution at Servicing

Important cautions to follow after performing servicing.

10-5. Judgement of Trouble by Every Symptom

Flowcharts for diagnosing specific indoor unit operational problems.

10-5-2. Wiring Failure (Interconnecting and Serial Signal Wire)

Troubleshooting wiring failures causing outdoor unit non-operation.

(2) Outdoor unit stops in a little while after operation started

Diagnosing why the outdoor unit stops after initial operation.

10-6. Trouble Diagnosis by Outdoor LED

Diagnosing outdoor unit faults using LED indicators and their codes.

10-7. How to Diagnose Trouble in Outdoor Unit

Flowchart for summarizing the inner diagnosis of the inverter assembly.

10-8. How to Check Simply the Main Parts

Procedures and precautions for checking the indoor unit's P.C. board.

(3) Check procedures

Step-by-step procedures for checking various components.

10-8-2. P.C. Board Layout

Layout diagrams of the indoor unit's P.C. board (top and bottom views).

10-8-3. Indoor Unit (Other Parts)

Procedures for checking indoor unit parts like sensors, remote control, and motors.

11-8-4. Outdoor Unit

Procedures for checking outdoor unit components like compressor and fan motor.

10-8-5. Checking Method for Each Part

Methods for checking capacitors, converter, and IGBT modules.

10-9. How to Simply Judge Whether Outdoor Fan Motor is Good or Bad

How to determine if the outdoor fan motor is functioning correctly.

HOW TO REPLACE THE MAIN PARTS

11-1. Indoor Unit

Procedures for removing and mounting the indoor unit's front panel.

11-1. Indoor Unit

Procedures for removing and mounting the indoor unit's electrical part.

11-1. Indoor Unit

Procedures for removing the indoor unit's horizontal louver.

11-1. Indoor Unit

Procedures for removing the indoor unit's heat exchanger.

11-1. Indoor Unit

Procedures for removing the indoor unit's cross flow fan.

11-1. Indoor Unit

Procedures for removing the indoor unit's base bearing.

11-2. Microcomputer

Procedure for replacing the microcomputer.

11-3. Outdoor Unit

General procedures for detaching and attaching the outdoor unit's parts.

11-3. Outdoor Unit

Procedures for removing and attaching the outdoor unit's front cabinet.

11-3. Outdoor Unit

Procedures for removing and discharging the inverter assembly.

11-3. Outdoor Unit

Procedures for removing and replacing control board assemblies.

11-3. Outdoor Unit

Procedures for removing the outdoor unit's rear cabinet.

11-3. Outdoor Unit

Procedures for replacing the outdoor unit's fan motor.

11-3. Outdoor Unit

Procedures for replacing the outdoor unit's compressor.

11-3. Outdoor Unit

Procedures for replacing the outdoor unit's reactor.

11-3. Outdoor Unit

Procedures for replacing the pulse modulating valve coil.

11-3. Outdoor Unit

Procedures for removing and attaching the fan guard.

11-3. Outdoor Unit

Procedure for replacing temperature sensors for servicing.

EXPLODED VIEWS AND PARTS LIST

12-1. Indoor Unit (1)

Exploded view and parts list for the indoor unit.

12-2. Outdoor Unit

Exploded view and parts list for the outdoor unit.

12-3. P.C. Board Layout

Layout diagrams for the MCC-758 and MCC-775 P.C. boards.

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