Toshiba RAS-18J2KVSG-E - User Manual

SERVICE MANUAL
Revised on March, 2020
Indoor Unit
RAS-18J2KVSG-E
RAS-B22J2KVSG-E
RAS-B24J2KVSG-E
RAS-18N4KVSG-E
RAS-B22N4KVSG-E
RAS-B24N4KVSG-E
SPLIT TYPE
Outdoor Unit
RAS-18J2AVSG-E
RAS-22J2AVSG-E
RAS-24J2AVSG-E
R32
FILE NO. SVM-20016-2

Summary

1. SAFETY PRECAUTIONS

Important information regarding the refrigerant used

Details about the new refrigerant R32, its properties, and handling precautions.

New Refrigerant Air Conditioner Installation

Safety guidelines for installing air conditioners using R32 refrigerant.

2. SPECIFICATIONS

2-1. Specification

Technical specifications including cooling/heating capacity, power, and dimensions.

3. REFRIGERANT R32

3-1. Safety During Installation;Servicing

Precautions for safe installation and servicing procedures with R32 refrigerant.

3-2. Refrigerant Piping Installation

Guidelines for installing refrigerant piping, including materials and joints.

3-3. Tools

3-4. Recharging of Refrigerant

5. WIRING DIAGRAM

6. SPECIFICATIONS OF ELECTRICAL PARTS

8. CONTROL BLOCK DIAGRAM

9. OPERATION DESCRIPTION

9-1. Outline of Air Conditioner Control

Overview of the air conditioner's capacity control and system operation.

9-2. Operation Description

1. Basic operation

7. Defrost control (Only in heating operation)

9-3. Auto Restart Function

9-3-1. How to Set the Auto Restart Function

Steps to enable the automatic restart feature after a power interruption.

9-3-2. How to Cancel the Auto Restart Function

9-4. Remote control

9-4-3. Name and Functions of Indications on Remote Controller

10. INSTALLATION PROCEDURE

10-1. Installation Diagram of Indoor and Outdoor Units

Visual guide for installing the indoor and outdoor units, showing clearances and connections.

10-2. Installation

10-2-3. Installation;Servicing Tools

10-3. Indoor Unit

10-3-4. Piping and drain hose installation

10-4. Outdoor Unit

10-5. Electrical works

10-5-2. Power Supply and Connecting Cable Connection

10-5-3. Power supply input Wiring Diagram for 1:1 Outdoor Unit

10-3. Others

10-3-1. Gas leak test

Procedures for checking refrigerant gas leaks using detectors or soap water.

10-3-4. Auto restart setting

11. HOW TO DIAGNOSE THE TROUBLE

11-1. First Confirmation

11-1-1. Confirmation of Power Supply

11-1-2. Confirmation of Power Voltage

11-2. Primary Judgment

11-3. Judgment by Flashing LED of Indoor Unit

11-4. Self-Diagnosis by Remote Controller (Check Code)

11-4-1. How to Use Remote Controller in Service Mode

Steps to enter service mode and use the remote controller for self-diagnosis.

11-4-2 Caution at Servicing

11-6. How to Check Simple the Main Parts

11-7. How to Diagnose Trouble in Outdoor Unit

11-7-1. Summarized Inner Diagnosis of Inverter Assembly

Diagnosing inverter assembly issues in the outdoor unit.

11-8. How to Check Simply the Main Parts

11-8-1. How to Check the P.C. Board (Indoor Unit)

11-9. How to Simply Judge Whether Outdoor Fan Motor is Good or Bad

12. HOW TO REPLACE THE MAIN PARTS

12-1. Indoor Unit

Instructions for replacing major parts of the indoor unit.

12-2. Outdoor Unit (RAS-18, 22 J2 AVSG-E)

12-3. Outdoor Unit (RAS-24 J2 AVSG-E)

13. EXPLODED VIEWS AND PARTS LIST

Toshiba RAS-18J2KVSG-E Specifications