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Toshiba RAS-4M27YAV-E User Manual

Toshiba RAS-4M27YAV-E
125 pages
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SERVICE MANUAL
FILE NO. A01-004
AIR-CONDITIONER
SUPPLEMENT
SPLIT TYPE
PRINTED IN JAPAN, Mar.,2001 ToMo
RAS-M10YKV-E, RAS-M13YKV-E, RAS-M16YKV-E
RAS-4M27YAV-E
RAS-M10YKCV-E, RAS-M13YKCV-E, RAS-M16YKCV-E
RAS-4M27YACV-E
RAS-M10YKV-E, RAS-M13YKV-E, RAS-M16YKV-E
RAS-3M26YAV-E
R410A
• Indoor Unit (1)
• Indoor Unit (2)
• Outdoor Unit
• P.C. board Layout
RAS-4M27YAV-E
RAS-4M27YACV-E
RAS-3M26YAV-E
Parts List
File No. A01-004

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Toshiba RAS-4M27YAV-E Specifications

General IconGeneral
BrandToshiba
ModelRAS-4M27YAV-E
CategoryAir Conditioner
LanguageEnglish

Summary

TOSHIBA AIR-CONDITIONER SPLIT TYPE Service Manual

1. SPECIFICATIONS

1-1. Specifications

Detailed performance and electrical specifications for the air conditioner units.

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

Performance data for multi-unit configurations with specific outdoor units.

1-3. Electrical Data

Comprehensive electrical specifications and data for outdoor units, including current and voltage ratings.

2. REFRIGERANT R410A

2-1. Safety During Installation/Servicing

Crucial safety precautions and guidelines for handling R410A refrigerant during installation and servicing.

2-2. Refrigerant Piping Installation

Detailed instructions on material selection and processing for R410A refrigerant piping installation.

2-3. Tools

Lists and descriptions of specialized tools required for R410A refrigerant handling and installation.

3. CONSTRUCTION VIEWS

3-1. Indoor Unit

Exploded diagrams and dimensions for the indoor unit components.

3-2. Outdoor Unit

Exploded diagrams and dimensions for the outdoor unit components.

4. WIRING DIAGRAM

4-1. Indoor Unit

Detailed wiring diagram for the indoor unit, including component connections and fault checking.

4-2. Outdoor Unit

Detailed wiring diagram for the outdoor unit, showing component connections and system layout.

5. SPECIFICATIONS OF ELECTRICAL PARTS

5-1. Indoor Unit

List of electrical parts for the indoor unit with their specifications and types.

5-2. Outdoor Unit

List of electrical parts for the outdoor unit, including model names and ratings.

6. REFRIGERANT CYCLE DIAGRAM

6-1. Operation Data

Performance data for cooling operation under various temperature and operating conditions.

7. CONTROL BLOCK DIAGRAM

7-1. Indoor Unit

Block diagram showing the control functions and signal flow within the indoor unit.

7-2. Outdoor Unit (Inverter Assembly)

Block diagram illustrating the control logic and components of the outdoor unit's inverter assembly.

8. OPERATION DESCRIPTION

8-1. Outline of Air Conditioner Control

Overview of the air conditioner's control system, including indoor and outdoor unit roles.

8-2. Description of Operation Circuit

Detailed explanations of various operating modes like COOL, DRY, and FAN only.

8-3. Temporary Operation

Instructions for using temporary operation modes like Auto and Cooling.

8-4. Auto Restart Function

Explanation and setup procedure for the automatic restart feature after power interruptions.

8-5. Remote Controller

Details on the parts and indications of the remote controller for operation.

9. INSTALLATION PROCEDURE

9-1. Safety Cautions

Critical safety warnings and precautions to be followed during the installation process.

9-2. Indoor Unit

Step-by-step guide for the installation of the indoor unit, including mounting and piping.

9-3. Outdoor Unit

Guidelines for installing the outdoor unit, including placement, piping, and precautions.

10. HOW TO DIAGNOSE THE TROUBLE

10-1. First Confirmation

Initial troubleshooting steps including power and voltage checks for the air conditioner.

10-2. Primary Judgment

Basic fault diagnosis methods, including LED indicators and symptom checks.

10-3. Judgment by Flashing LED of Indoor Unit

Interpretation of indoor unit LED indicators for self-diagnosis and error identification.

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

Procedure for performing self-diagnosis using the remote controller and interpreting check codes.

10-5. Judgment of Trouble by Every Symptom

Troubleshooting guide based on symptoms, focusing on the indoor unit and power issues.

10-6. Trouble Diagnosis by Outdoor LED

Explanation of outdoor unit LED indicators for self-diagnosis and fault identification.

10-7. How to Diagnose Trouble in Outdoor Unit

Step-by-step diagnostic flowchart for troubleshooting the outdoor unit's inverter assembly.

10-8. How to Check Simply the Main Parts

Procedures for checking the functionality of main internal components like P.C. boards and motors.

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

Specific method to test the outdoor fan motor's condition using resistance measurements.

11. HOW TO REPLACE THE MAIN PARTS

11-1. Indoor Unit

Detailed instructions for replacing key components of the indoor unit, including front panel and PC boards.

11-2. Microcomputer

Procedure for accessing and replacing the microcomputer on the indoor unit's PC board.

11-3. Outdoor Unit

Procedures for disassembling and replacing parts of the outdoor unit, including panels and inverter assembly.

12. EXPLODED VIEWS AND PARTS LIST

12-1. Indoor Unit (1)

Exploded view and parts list for the indoor unit's primary components.

12-2. Outdoor Unit

Exploded view and parts list for the outdoor unit, detailing various components.

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