EasyManua.ls Logo

Toshiba RAS-M18YAV-E User Manual

Toshiba RAS-M18YAV-E
84 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
SERVICE MANUAL
FILE NO. A00-9906
AIR-CONDITIONER
SUPPLEMENT
SPLIT TYPE
PRINTED IN JAPAN, Nov.,1999 ToMo
RAS-M10YKV-E, RAS-M13YKV-E
/
RAS-M18YAV-E
R AS-M10YKCV-E, RAS-M13YKCV-E
/
RAS-M18YACV-E
R410A
Question and Answer IconNeed help?

Do you have a question about the Toshiba RAS-M18YAV-E and is the answer not in the manual?

Toshiba RAS-M18YAV-E Specifications

General IconGeneral
Cooling Capacity5.0 kW
Power Supply220-240V, 50Hz
RefrigerantR410A
Energy Efficiency Ratio (EER)3.21
Coefficient of Performance (COP)3.61
Outdoor Unit Dimensions (W x H x D)780 x 550 x 290 mm
Noise Level (Indoor)42 dB(A)
Noise Level (Outdoor)52 dB(A)
TypeSplit System Air Conditioner

Summary

TOSHIBA Service Manual

Specifications

1-1. Specifications

Details product capabilities, power, dimensions, and operating parameters.

1-2. Performance Specifications for Combined Units

Details performance metrics for combined indoor unit operations in cooling and heating.

1-2-1. Operation Characteristic Curves

Illustrates compressor speed vs. current and capacity variation vs. temperature.

1-2-2. Cooling Capacity Variation by Temperature

Illustrates compressor speed vs. current and capacity variation vs. temperature.

1-3. Electrical Data

Provides electrical specifications for cooling and heating modes, including component data.

Refrigerant R410A

2-1. Safety During Installation and Servicing

Covers essential safety precautions for R410A installation and servicing.

2-2. Refrigerant Piping Installation

Details installation requirements for refrigerant piping systems.

2-2-1. Piping Materials and Joints

Describes materials and types of joints for refrigerant piping.

2-2-2. Piping Material Processing

Explains how to process piping materials, including cutting and burr removal.

Flare Connecting Procedures and Precautions

Outlines procedures and precautions for flare connecting, including torque values.

2-3. Required Tools

Lists tools required for R410A installation and general tools.

2-4. Recharging of Refrigerant

Details the step-by-step process for recharging refrigerant.

2-5. Brazing of Pipes

Covers essential pipe joining techniques for refrigerant systems.

2-5-1. Materials for Brazing

Lists various brazing filler materials.

2-5-2. Flux

Explains the purpose and types of flux used in brazing.

2-5-3. Brazing Method to Prevent Oxidation

Describes techniques to prevent oxidation during brazing.

Construction Views

3-1. Indoor Unit

Provides detailed diagrams and dimensions for the indoor unit.

3-2. Outdoor Unit

Provides detailed diagrams and dimensions for the outdoor unit.

Wiring Diagrams

4-1. Indoor Unit Wiring Diagram

Shows the electrical wiring schematic for the indoor unit.

4-2. Outdoor Unit Wiring Diagram

Shows the electrical wiring schematic for the outdoor unit.

Specifications of Electrical Parts

5-1. Indoor Unit Electrical Parts

Lists electrical parts and specifications for indoor units.

5-2. Outdoor Unit Electrical Parts

Lists electrical parts and specifications for outdoor units.

Refrigerant Cycle Diagram

6-1. Refrigerant Cycle Diagram

Illustrates the refrigerant flow paths for cooling and heating.

Operation Data

6-2. Operation Data

Details performance metrics under various operating conditions.

Control Block Diagrams

7-1. Indoor Unit Control Block Diagram

Diagrams control functions and signal flow for the indoor unit.

7-2. Outdoor Unit Control Block Diagram

Diagrams control functions and signal flow for the outdoor unit.

Operation Description

8-1. Outline of Air Conditioner Control

Explains the overall control logic and roles of controllers.

8-1-1. Capacity Control

Details how cooling capacity is controlled via compressor speed.

8-1-2. Current Release Control

Explains how current is managed to prevent overloads.

8-1-3. Power Factor Improvement Control

Describes power factor improvement techniques.

8-1-4. Prevent-Freezing Control

Explains how to prevent indoor heat exchanger freezing.

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

Details the function of the Pulse Modulating Valve.

8-1-6. Louver Control

Explains the control of air flow louvers.

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

Details control of the indoor fan motor speed.

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

Explains control of the outdoor fan motor speed.

8-2. Description of Operation Circuit

Provides a general description of the operation circuit.

8-2-1. Fan Only Operation

Explains how to operate the unit in fan-only mode.

8-2-2. Cooling Operation

Explains cooling operation, including capacity control and prevent-freezing.

Compressor Speed Limits

Limits compressor speed based on indoor fan speed.

Louver Control Details

Explains how louvers are controlled.

Discharge Temperature Control

Explains control based on discharge temperature.

ECONO. Operation Control

Details control logic for Economy mode.

8-2-3. DRY Operation

Explains the DRY operation mode.

8-2-4. Heating Operation

Details heating operation, including cold draft prevention.

8-2-5. Automatic Operation

Explains how automatic operation selects modes.

8-3. Temporary Operation

Overviews temporary operation modes.

8-3-1. Temporary Auto Operation

Details how temporary auto operation works.

8-3-2. Temporary Cooling Operation

Details how temporary cooling operation works.

8-4. Auto Restart Function

Explains the auto-restart feature for power interruptions.

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

Provides steps to enable the auto-restart feature.

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

Provides steps to disable the auto-restart feature.

8-4-3. Power Failure During Timer Operation

Explains how power failures affect timer operations.

8-5. Remote Control

Explains the remote control functions and indicators.

8-5-1. Remote Control Parts Name

Identifies components of the remote control.

8-5-2. Remote Control Indications

Explains the display indicators on the remote.

Installation Procedure

9-1. Safety Cautions

Crucial safety guidelines and precautions for installation.

9-2. Indoor Unit Installation

General installation steps for the indoor unit.

9-2-2. Installation Place

Criteria for selecting the indoor unit installation location.

9-2-3. Cutting Hole and Mounting Plate

Procedures for preparing the wall for installation.

9-2-4. Wiring Connection

Details how to connect the inter-unit wiring.

9-2-5. Piping and Drain Hose Installation

Details steps for connecting pipes and drain hoses.

9-2-6. Drainage Installation

Instructions for proper drainage installation.

9-2-7. Indoor Unit Fixing

How to securely mount the indoor unit.

9-2-8. Remote Control Selector Setting

How to set the selector switch on the remote control.

Remote Control Selector Setting

How to set the selector switch on the remote control.

9-2-9. Check and Test Operation

Steps for checking and testing the installed unit.

9-3. Outdoor Unit Installation

General installation steps for the outdoor unit.

9-3-1. Accessory and Installation Parts

Lists parts required for outdoor unit installation.

9-3-2. Refrigerant Piping Requirements

Specifies requirements for refrigerant piping.

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

Lists optional parts for local supply.

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

Lists optional parts sold separately.

9-3-6. Refrigerant Piping Connection

Procedures for connecting refrigerant piping.

Tightening Connection

Proper torque for flare nut connections.

9-3-8. Evacuating

Details the steps for evacuating the system.

9-3-9. Electrical Work

Covers electrical work procedures, wiring, and power supply.

9-3-10. Check and Test Operation

Final checks and testing after installation.

9-3-11. Miswiring Check

How to check for wiring or piping errors.

9-3-13. Installation/Servicing Tools

Lists specialized tools for R410A systems.

Troubleshooting

10-1. First Confirmation

Initial troubleshooting steps to verify basic conditions.

10-1-1. Confirmation of Power Supply

Verifying the power supply status.

10-1-2. Confirmation of Power Voltage

Verifying the input voltage levels.

10-1-3. Normal Operation (Program Operation)

Identifying normal operating behaviors that may seem like faults.

10-2. Primary Judgment

Methods for initial fault diagnosis.

10-3. Indoor Unit LED Diagnosis

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

10-4. Self-Diagnosis by Remote Control

Overview of troubleshooting using remote control diagnostic codes.

10-4-1. Self-Diagnosis Procedure

How to perform self-diagnosis via the remote control.

10-4-3. Caution at Servicing

Important safety and procedural cautions for performing service.

10-5. Judgment by Symptom

Diagnosing issues based on observed symptoms.

10-5-1. Indoor Unit Symptoms

Diagnosing indoor unit issues based on symptoms.

10-5-2. Wiring Failure Diagnosis

Diagnosing problems related to inter-unit wiring and communication.

10-6. Check Codes 1C and 1E

Detailed troubleshooting for specific error codes.

10-7. Outdoor Unit LED Diagnosis

Interpreting outdoor unit LED codes for fault diagnosis.

10-8. Outdoor Unit Troubleshooting

Comprehensive troubleshooting guide for the outdoor unit.

10-8-1. Inverter Assembly Diagnosis

A diagnostic flowchart for the inverter assembly in the outdoor unit.

10-9. Checking Main Parts

General methods for checking main system components.

10-9-1. Indoor Unit P.C. Board Check

Procedures for inspecting the indoor unit's P.C. board.

10-9-2. P.C. Board Layout

Layout diagrams of P.C. boards with component locations.

10-9-3. Indoor Unit Parts Check

Checking procedures for various indoor unit parts.

10-9-4. Outdoor Unit Parts Check

Checking procedures for various outdoor unit parts.

10-9-5. Checking Methods for Each Part

Detailed checks for electrolytic capacitors and converter modules.

10-10. Outdoor Fan Motor Check

Method to determine the condition of the outdoor fan motor.

How to Replace Main Parts

11-1. Indoor Unit Parts Replacement

Step-by-step guide for replacing main parts of the indoor unit.

11-3. Outdoor Unit Parts Replacement

Steps for detaching and attaching the outdoor unit's outer parts.

Exploded Views and Parts List

12-1. Indoor Unit Parts List

Exploded view and parts list for the indoor unit.

12-2. Outdoor Unit Parts List

Exploded view and parts list for the outdoor unit.

12-3. P.C. Board Layout

Layout diagrams of P.C. boards in the outdoor unit.

Related product manuals