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Toshiba RAS-24SKPX User Manual

Toshiba RAS-24SKPX
73 pages
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Revised May, 2008
FILE NO. SVM-08032-1
SERVICE MANUAL
AIR CONDITIONER
SPLIT WALL TYPE
24 Class18 Class
RAS-18SKPX / RAS-18S2AX
RAS-24SKPX / RAS-24S2AX
RAS-18SKPX-V / RAS-18S2AX-V
RAS-18SKP-E / RAS-18S2A-E
RAS-24SKP-E / RAS-24S2A-E

Table of Contents

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Toshiba RAS-24SKPX Specifications

General IconGeneral
Power Supply220-240V, 50Hz
Energy Efficiency Ratio (EER)3.21
Coefficient of Performance (COP)3.61
RefrigerantR32
Indoor Unit Weight14 kg
TypeSplit System

Summary

TOSHIBA Air Conditioner Specifications

Construction Views

Indoor Unit Diagrams

Exploded views and dimensions of the indoor air conditioner unit.

Outdoor Unit (18 Class) Diagrams

Exploded views and dimensions for the 18 Class outdoor unit.

Outdoor Unit (24 Class) Diagrams

Exploded views and dimensions for the 24 Class outdoor unit.

Wiring Diagrams

Wiring Diagram (18 Series Models)

Wiring schematic for 18SKPX, 18S2AX, 18SKPX-V, 18S2AX-V, 18SKP-E, 18S2A-E.

Wiring Diagram (24 Series Models)

Wiring schematic for 24SKPX, 24S2AX, 24SKP-E, 24S2A-E.

Electrical Parts Specifications

Indoor Unit Electrical Parts (18 Series)

Specifications for indoor unit electrical components of 18 series models.

Outdoor Unit Electrical Parts (18 Series)

Specifications for outdoor unit electrical parts of 18 series models.

Indoor Unit Electrical Parts (24 Series)

Specifications for indoor unit electrical components of 24 series models.

Outdoor Unit Electrical Parts (24 Series)

Specifications for outdoor unit electrical parts of 24 series models.

Refrigeration Cycle Diagrams

Refrigeration Cycle (18 Series Models)

Refrigerant cycle diagram for 18 series models with operating conditions.

Refrigeration Cycle (24 Series Models)

Refrigerant cycle diagram for 24 series models with operating conditions.

Control Block Diagram

Operation Description

Remote Control Functions

Explanation of the remote control buttons and their functions.

Remote Control Display

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

Air Conditioner Control Overview

General description of how the indoor and outdoor units control the air conditioner's operation.

Louver Control

How the vertical air flow louver is controlled and adjusted.

Indoor Fan Speed Control

How the indoor fan speed is controlled in different modes.

Operation Mode Descriptions

Detailed explanations for Fan only, Cooling, and Dry operation modes.

Fan Only Operation

How the unit operates in Fan only mode, including fan speed settings.

Cooling Operation

How the unit operates in Cooling mode, controlling compressor and fan.

Dry Operation

How the unit operates in Dry mode, managing compressor and fan cycles.

Automatic Operation

How the unit automatically selects between Cooling and Fan only modes.

Safety and Reliability Functions

Description of safety features like low-temperature limit control and one-touch operation.

Low-Temperature Limit Control

Prevents indoor heat exchanger freezing by controlling compressor and fan.

One-Touch Operation

Explanation of the fully automated one-touch comfort operation.

Hi POWER Operation

How to activate and operate the Hi POWER mode for faster cooling.

QUIET Operation

How to activate QUIET mode for reduced noise levels.

ECO Operation

Explanation of the ECO mode for energy saving.

COMFORT SLEEP Operation

How to use COMFORT SLEEP mode for quiet and energy-saving operation.

FILTER Check Lamp

Information on the filter indicator light and how to reset it.

Auto Restart Function

How the unit automatically restarts with previous settings after power loss.

Setting Auto Restart

Procedure to enable the auto restart function.

Cancelling Auto Restart

Procedure to disable the auto restart function.

Self-Cleaning Operation

Explanation of the self-cleaning function to maintain indoor unit cleanliness.

Self-Cleaning Diagram

Diagram showing the operation of the self-cleaning mode.

Self-Cleaning Function Release

Procedures for setting or canceling the self-cleaning function.

Installation Procedure

Safety Cautions

Critical safety warnings and precautions for installation personnel.

Installation Diagram

Visual guide for the physical installation of indoor and outdoor units.

Installation Details

Specific installation steps and required optional parts for mounting.

Optional Installation Parts

List of optional parts required for installation.

Accessory and Installation Parts

List of included accessories and installation hardware.

Indoor Unit Installation

Detailed instructions for installing the indoor unit components.

Indoor Unit Installation Place

Guidelines for selecting the optimal location for indoor unit installation.

Drilling and Mounting Plate

Instructions for drilling holes and mounting the installation plate for the indoor unit.

Electrical Work

Procedures for electrical connections and wiring for the indoor unit.

Wiring Connection

Steps for connecting the internal wiring and cables for the indoor unit.

Piping and Drain Hose Installation

Instructions for installing refrigerant pipes and drain hoses.

Indoor Unit Mounting

How to securely mount the indoor unit onto the installation plate.

Drainage Installation

Proper installation of the drain hose for effective water removal.

Outdoor Unit Installation

Guidelines for installing the outdoor unit of the air conditioner.

Outdoor Unit Installation Place

Criteria for selecting the proper location for the outdoor unit.

Refrigerant Piping Connection

Steps for connecting the refrigerant pipes to the outdoor unit.

Evacuating the System

Procedure for evacuating air and moisture from the refrigerant system.

Outdoor Unit Wiring Connection

Instructions for connecting electrical wiring to the outdoor unit.

Test Operation

Procedures for performing a test run after installation.

Gas Leak Test

How to check for refrigerant leaks after piping connection.

Performing Test Operation

Steps to perform a functional test of the air conditioner.

Auto Restart Setting

How to configure the auto restart function.

Remote Controller Mode Selection

How to set remote control modes for multiple units.

Troubleshooting Chart

Troubleshooting Procedure

General steps to follow for troubleshooting issues.

Basic Check Items

Initial checks for power supply, connections, and program control.

Power Supply Voltage Check

Verifying the correct power supply voltage for operation.

Cable Connection Check

Ensuring correct wiring between indoor and outdoor units.

Program Control Verification

Confirming the microcontroller operates as expected.

Primary Judgement

Initial diagnosis based on unit symptoms and lamp indicators.

Indoor Unit Controller Role

Functions of the indoor unit controller in system operation.

Failure Diagnosis

How the unit self-diagnoses issues and indicates them via lamps.

Remote Control Self-Diagnosis

Using the remote control to access and interpret diagnostic check codes.

Remote Control Service Mode

Steps to enter service mode for remote control diagnostics.

Indoor Unit Troubleshooting

Troubleshooting specific issues with the indoor unit.

Indoor Unit No Power

Diagnosing why the indoor unit does not turn on.

Indoor Fan Motor Issues

Troubleshooting problems with the indoor fan motor operation.

Compressor Operation Issues

Diagnosing and resolving problems with the compressor not operating.

Wiring Troubleshooting

Diagnosing issues related to interconnect and serial signal wiring.

Outdoor Unit No Operation

Troubleshooting when the outdoor unit does not operate.

Outdoor Unit Stops Temporarily

Diagnosing why the outdoor unit stops and restarts.

P.C. Board Troubleshooting

Procedures for troubleshooting issues related to the printed circuit board.

Indoor P.C. Board Checks

Steps to inspect and test the indoor unit's P.C. board.

Shortening Restart Delay Timer

How to adjust the restart delay timer setting.

Self-Cleaning Function Set/Cancel

Procedures for setting or canceling the self-cleaning function.

Remote Control Troubleshooting

Steps to diagnose and resolve issues with the remote control.

How to Replace Main Parts

Indoor Unit Part Replacement

Procedures for replacing parts of the indoor unit.

Outdoor Unit Part Replacement (18 Series)

Procedures for replacing parts of the 18 series outdoor unit.

Outdoor Unit Part Replacement (24 Series)

Procedures for replacing parts of the 24 series outdoor unit.

Exploded Views and Parts List

Indoor Unit Exploded View & Parts List

Exploded diagram and parts list for the indoor unit assembly.

Indoor Unit Parts List

Detailed parts list for the indoor unit with part numbers.

Outdoor Unit Exploded View (18 Series)

Exploded diagram and parts list for the 18 series outdoor unit.

Outdoor Unit Exploded View (24 Series)

Exploded diagram and parts list for the 24 series outdoor unit.

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