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Toshiba RAS-10SAHX User Manual

Toshiba RAS-10SAHX
62 pages
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SERVICE M ANUAL
SPLIT W A LL TY PE
TO SH IB A
P R IN TE D IN JA P A N , N ov.,1996 ToM o
FIL E N O . A 00-9619
AIR-CONDITIONER
RAS-10SKH-E
RAS-10SAH-E
RAS-10SKHX
RAS-10SAHX

Table of Contents

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Toshiba RAS-10SAHX Specifications

General IconGeneral
BrandToshiba
ModelRAS-10SAHX
CategoryAir Conditioner
LanguageEnglish

Summary

Specifications

Construction Views

Indoor Unit

Detailed dimensions and layout of the indoor unit.

Outdoor Unit

Detailed dimensions and layout of the outdoor unit.

Wiring Diagram

Specifications of Electrical Parts

Indoor Unit

List of electrical parts for the indoor unit with specifications.

Outdoor Unit

List of electrical parts for the outdoor unit with specifications.

Refrigerant Cycle Diagram

Micro-Computer Block Diagram

Operation Descriptions

FAN ONLY Operation

Details on operating the unit in fan-only mode.

COOL Operation

Explains the cooling mode operation and controls.

Louver Control

How to set and control the louvers.

DRY Operation

Details on the dehumidification (dry) mode operation.

HEAT Operation

Explains the heating mode operation and controls.

Louver Control

How to set and control the louvers in heat mode.

Cool Airflow Control

Control of airflow during heating to prevent cool air.

AUTO Operation

How the unit selects operation mode based on temperature.

Temporary Auto

Details on the temporary auto mode functionality.

ECONO. Mode

Information on the energy-saving ECONO mode.

ECONO. Mode Cooling

ECONO mode operation during cooling.

ECONO. Mode Heating

ECONO mode operation during heating.

Current Limit Control

How the unit manages current to prevent overload.

High-Temperature Limit Control (Heating Operation)

Prevents overheating during heating operation.

Low-Temperature Limit Control (Cooling Operation)

Prevents freezing during cooling operation.

Cool Airflow Prevention Control (Heating Operation)

Controls indoor fan speed to prevent cool air blowing.

Defrost Operation

Procedure to melt ice on the outdoor heat exchanger.

Condition to Start the Defrost Operation

Criteria for initiating the defrost cycle.

Defrost Operation Time Control

Manages the duration of the defrost operation.

Ending Condition at Defrost Operation

Conditions that stop the defrost operation.

Auto Restart Function

How the unit resumes operation after power loss.

How to Set the Auto Restart

Steps to enable the auto restart feature.

How to Cancel the Auto Restart

Steps to disable the auto restart feature.

In Case of Power Failure during the Timer Operation

How power failures affect timer operations.

Installation Procedure

Safety Cautions

Important safety precautions for installation.

Installation Diagram of Indoor and Outdoor Units

Visual guide for unit placement and piping.

Installation

General steps and considerations for installation.

Optional Parts

List and description of optional installation parts.

Kit Parts

List of parts included in the installation kit.

Indoor Unit

Detailed installation steps for the indoor unit.

Cutting a Hole and Mounting Installation Plate

Guide for creating wall openings and mounting plates.

Electrical Work

Procedures for electrical connections and power supply.

Wiring Connection

How to connect the wiring between units.

Piping and Drain Hose Installation

Instructions for installing refrigerant pipes and drain hose.

Indoor Unit Installation

Final steps for mounting and securing the indoor unit.

Drainage

How to properly set up the drainage system.

Outdoor Unit

Detailed installation steps for the outdoor unit.

Installation place

Recommended locations for outdoor unit installation.

Refrigerant Piping Connection

How to connect the refrigerant pipes.

Vacuum Pumping

Process of removing air from the refrigerant system.

Wiring Connection

Connecting the electrical wiring to the outdoor unit.

Gas Leak Test

How to check for refrigerant leaks.

Test Operation

Steps for performing an initial test run.

Auto Restart Setting

How to configure the auto restart function.

Troubleshooting Chart

What to be Prechecked First

Initial checks before detailed troubleshooting.

Power Supply Voltage

Verifying the input power voltage.

Misleading but Good Operations (Program Controlled Operation)

Explains normal operations that might seem like faults.

Primary Judgement of Trouble Sources

Identifying potential causes of issues.

Role of Indoor Unit Controller

Functions performed by the indoor unit's control system.

Display of Abnormalities and Judgement of the Abnormal Spots

Understanding error codes and indicators.

Self-diagnosis with remote control

Performing self-diagnosis using the remote control.

Self-diagnosis by check codes

Interpreting diagnostic codes from the unit.

Troubleshooting Flowcharts

Step-by-step guides for diagnosing problems.

Power can not be Turned on (No Operation at All)

Troubleshooting steps for a unit that won't turn on.

Power can not be Turned on after Replacing Indoor PC Board

Diagnosing issues after PC board replacement.

Outdoor Unit does not Operate

Troubleshooting for when the outdoor unit is inactive.

Only Compressor does not Operate

Diagnosing why only the compressor isn't working.

Only Outdoor Fan does not Operate

Troubleshooting for an inactive outdoor fan.

Only the Indoor Fan does not Operate

Troubleshooting for an inactive indoor fan.

How to Check the Remote Control (Including the Indoor PC Board)

Steps to diagnose remote control and indoor board issues.

How to Check the PC Board

Procedures for inspecting the main PC board.

How to Reduce the Operation Time of the Anti-Restart Timer

Modifying the anti-restart timer duration.

Part Replacement

Indoor Unit (RAS-10SKH-E, RAS-10SKHX)

Procedures for replacing indoor unit components.

Microcomputer (RAS-10SKH-E, RAS-10SKHX)

Steps for replacing the microcomputer.

Outdoor Unit (RAS-10SAH-E, RAS-10SAHX)

Procedures for replacing outdoor unit components.

Cautions on Replacement of PC Board Assembly

Exploded Views and Parts List

Indoor Unit (1)

Exploded view and parts list for the indoor unit.

Indoor Unit (2)

Additional exploded view and parts list for the indoor unit.

Indoor Unit (3)

Further exploded view and parts list for the indoor unit.

Outdoor Unit

Exploded view and parts list for the outdoor unit.

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