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Toshiba RAS-18GAH-ES2 - User Manual

Toshiba RAS-18GAH-ES2
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SERVICE MANUAL
AIR-CONDITIONER
UNDER CEILING / CONSOLE TYPE
RAS-18GFHP-ES2 / RAS-18GAH-ES2
RAS-18GFP-ES2 / RAS-18GA-ES2
RAS-24GFHP-ES2 / RAS-24GAH-ES2
RAS-24GFP-ES2 / RAS-24GA-ES2
FILE NO. SVM-06021
June, 2006
24 Class18 Class

Table of Contents

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Summary

1. SPECIFICATIONS

2. CONSTRUCTION VIEWS

2-1. Indoor Unit

Detailed diagrams and dimensions of the indoor unit for installation and understanding.

2-2 Outdoor Unit (24 Class)

Diagrams and dimensions of the 24 Class outdoor unit for installation and understanding.

2-3 Outdoor Unit (18 Class)

Diagrams and dimensions of the 18 Class outdoor unit for installation and understanding.

3. WIRING DIAGRAM

3-1. RAS-18 GFHP-ES2; RAS-18 GAH-ES2

Wiring diagram for RAS-18GFHP-ES2 and RAS-18GAH-ES2 models.

3-2. RAS-24 GFHP-ES2; RAS-24 GAH-ES2

Wiring diagram for RAS-24GFHP-ES2 and RAS-24GAH-ES2 models.

3-3. RAS-18 GFP-ES2; RAS-18 GA-ES2

Wiring diagram for RAS-18GFP-ES2 and RAS-18GA-ES2 models.

3-4. RAS-24 GFP-ES2; RAS-24 GA-ES2

Wiring diagram for RAS-24GFP-ES2 and RAS-24GA-ES2 models.

4. SPECIFICATION OF ELECTRICAL PARTS

4-1. Indoor Unit (RAS-24 GFHP-ES2, RAS-18 GFHP-ES2)

Specifications for electrical parts of Indoor Units RAS-24GFHP-ES2 and RAS-18GFHP-ES2.

4-2. Outdoor Unit (RAS-24 GAH-ES2)

Specifications for electrical parts of Outdoor Unit RAS-24GAH-ES2.

4-3. Outdoor Unit (RAS-18 GAH-ES2)

Specifications for electrical parts of Outdoor Unit RAS-18GAH-ES2.

4-4. Indoor Unit (RAS-24 GFP-ES2, RAS-18 GFP-ES2)

Specifications for electrical parts of Indoor Units RAS-24GFP-ES2 and RAS-18GFP-ES2.

4-5. Outdoor Unit (RAS-24 GA-ES2)

Specifications for electrical parts of Outdoor Unit RAS-24GA-ES2.

4-6. Outdoor Unit (RAS-18 GA-ES2)

Specifications for electrical parts of Outdoor Unit RAS-18GA-ES2.

5. REFRIGERATION CYCLE DIAGRAM

5-1. RAS-18 GFHP-ES2; RAS-18 GAH-ES2

Refrigeration cycle diagram for RAS-18GFHP-ES2 and RAS-18GAH-ES2 models.

5-2. RAS-18 GFP-ES2; RAS-18 GA-ES2

Refrigeration cycle diagram for RAS-18GFP-ES2 and RAS-18GA-ES2 models.

5-3. RAS-24 GFHP-ES2; RAS-24 GAH-ES2

Refrigeration cycle diagram for RAS-24GFHP-ES2 and RAS-24GAH-ES2 models.

5-4. RAS-24 GFP-ES2; RAS-24 GA-ES2

Refrigeration cycle diagram for RAS-24GFP-ES2 and RAS-24GA-ES2 models.

6. CONTROL BLOCK DIAGRAM

6-1. RAS-18 GFHP-ES2, RAS-24 GFHP-ES2

Control block diagram for RAS-18GFHP-ES2 and RAS-24GFHP-ES2 models.

6-2. RAS-18 GFP-ES2, RAS-24 GFP-ES2

Control block diagram for RAS-18GFP-ES2 and RAS-24GFP-ES2 models.

7. OPERATION DESCRIPTION

7-1. Outline of Air Conditioner Control

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

7-1-1. Louver control

Description of vertical air flow louver control and swing function.

7-1-2. Indoor fan control (AC Fan motor)

Details on indoor fan speed control and AUTO mode operation.

7-2. Description of Operation Circuit

Explains the function of operation lamps, beeps, and memory function.

7-2-1. Fan only operation

Describes fan-only mode operation and fan speed settings.

7-2-2. Cooling operation

Details compressor, valve, fan control and operation display in cooling mode.

7-2-3. Dry operation

Describes compressor, valve, fan control and operation display in dry mode.

7-2-4. Heating operation

Describes compressor, valve, fan control and operation display in heating mode.

7-2-5. Automatic operation

Explains mode selection and temporary auto function for automatic operation.

7-3. Hi POWER Mode

Describes the Hi POWER mode operation for Auto, Cooling and Heating.

7-4. High-Temperature Limit Control

Explains indoor heat exchanger temp control to prevent pressure increase.

7-5. Low-Temperature Limit Control

Explains indoor heat exchanger temp control to prevent freezing.

7-6. Defrost Operation

Describes defrost operation for heat pump models.

7-6-1. Defrost starting condition

Conditions and zones for initiating the defrost operation.

7-6-2. Defrost finish condition.

Conditions for finishing the defrost operation and timing.

7-7. Auto Restart Function

Explains the automatic restart function after power failure.

7-7-1. How to set auto restart function

Step-by-step guide to enable the auto restart function.

7-8. Filter Check Lamp

Information about the filter check lamp and how to reset it.

7-7-2. How to cancel auto restart function

Steps to cancel the auto restart function.

7-7-3. Power failure during timer operation

Notes on timer operation cancellation due to power failure.

7-8-1. How to turn off filter check lamp

Instructions on how to turn off the filter check lamp.

7-9. Self-Cleaning function

Explains the self-cleaning function to reduce humidity and prevent mold.

7-9-1. How to cancel Self-Cleaning function

Steps to cancel the self-cleaning function.

7-9-2. How to set Self-Cleaning function.

Steps to set the self-cleaning function.

7-10. QUIET Mode

Describes the quiet mode for reduced noise and fan speed.

7-11. COMFORT SLEEP mode

Principles of comfort sleep mode: quietness and automatic temperature change.

8. INSTALLATION PROCEDURE

8-1. Safety Cautions

General and specific safety cautions for installation and refrigerant handling.

8-2. Installation Diagram of Indoor and Outdoor Units

Diagrams showing the placement and installation of indoor and outdoor units.

8-3. Installation

Lists optional installation parts and fixing bolt arrangement for outdoor units.

8-3-2. Accessory and installation parts

Lists accessory and installation parts with their numbers and quantities.

8-3-3. Installation;Servicing tools

Lists tools for R-410A refrigerant and changes from R-22 models.

8-4. Indoor Unit

Information about installation place and remote control usage for indoor units.

8-4-1. Installation place

Guidelines for choosing the installation location for the indoor unit.

8-4-2. Before installation

Instructions on how to remove the air inlet grille before installation.

8-4-3. After installation

Instructions on how to install the air inlet grille after installation.

8-4-4. Under ceiling installation

Steps for installing the indoor unit under the ceiling.

Piping and Drain hose installation

Instructions for piping and drain hose installation for indoor units.

8-4-5. Console installation

Steps for installing the indoor unit in a console configuration.

8-4-6. Wiring connection

Instructions for connecting the connecting cable for indoor unit wiring.

8-4-7. Pipe shield for flare nut connection

How to install the pipe shield for flare nut connections.

8-4-8. Drainage

Instructions for proper drain hose installation and testing.

8-5. Outdoor Unit

Information on installation place for outdoor units.

8-5-1. Installation place

Guidelines for choosing the installation location for the outdoor unit.

8-5-2. Refrigerant piping connection

Steps for connecting the refrigerant piping and flaring the pipe.

8-5-3. Evacuating

Procedure for air purging and evacuation using a vacuum pump.

8-5-4. Wiring connection

Instructions for connecting the power supply and connecting cables for outdoor units.

8-6. How to Set Remote Control Selector Switch

How to set the remote control selector switch for multiple indoor units.

8-7. How to Use Drain Pump Kit of Option

Instructions for using the optional drain pump kit for upward drainage.

8-8. Others

Miscellaneous topics, including gas leak test and test operation.

9. TROUBLESHOOTING CHART

9-2. Basic Check Items

Basic checks for power supply, connections, and program control issues.

9-3. Primary Judgement

Guides on primary fault judgment based on symptoms and checks.

9-3-1. Role of indoor unit controller

Explains the functions of the indoor unit controller.

9-3-2. Failure diagnosis

How the indoor unit diagnoses and indicates failures via lamps.

9-4. Self-Diagnosis by Remote Control

How to use the remote control for self-diagnosis and check codes.

9-4-1. How to use remote control in service mode

Step-by-step guide to enter service mode on the remote control.

9-5. How to Diagnose Faulty Parts

Flowchart for diagnosing faulty parts based on symptoms like serial signal error.

9-6. Troubleshooting for Indoor Unit

Troubleshooting for indoor unit power not turning on.

9-6-1. Power can not be turned on.

Checks and procedures when the indoor unit does not operate at all.

9-6-2. Only indoor fan motor does not operate.

Troubleshooting steps when only the indoor fan motor does not operate.

9-6-3. Compressor does not operate.

Troubleshooting steps when the compressor does not operate.

9-7. Troubleshooting for Wiring (Interconnect cable and Serial Signal Wire)

Troubleshooting for wiring problems between indoor and outdoor units.

9-7-1. Outdoor unit does not operate.

Checks for voltage and signal transmission for outdoor unit operation.

9-7-2. Outdoor unit stops a while after starting the unit.

Troubleshooting steps when the outdoor unit stops after starting.

9-8. Troubleshooting for P.C. Board

Troubleshooting electronic components.

9-8-1. How to check indoor P.C. board

Inspection procedures and causes for indoor P.C. board issues.

9-8-2. How to Shorten Time of Restart Delay Timer

Procedure to shorten the restart delay timer.

9-9. Troubleshooting for Remote Control

Flowchart for troubleshooting remote control issues.

10. PARTS REPLACEMENT

10-1. Indoor Unit

Procedures for replacing the air inlet grille on the indoor unit.

Front panel

Procedures for removing and installing the front panel of the indoor unit.

Drain pan assembly

Procedures for removing and installing the drain pan assembly.

Electrical parts assembly

Procedures for removing the electrical parts assembly.

Refrigeration assembly

Procedures for removing the refrigeration assembly.

Multiblade fan and Fan motor

Procedures for removing the multiblade fan and fan motor.

10-2. Outdoor Unit (RAS-24 GAH-ES2, RAS-24 GA-ES2)

Common procedures for disassembling the outdoor unit.

Running capacitor for compressor

Procedures for replacing the running capacitor for the compressor.

Running capacitor for fan motor

Procedures for replacing the running capacitor for the fan motor.

Magnetic contactor

Procedures for replacing the magnetic contactor.

Spark killer (Cooling only model)

Procedures for replacing the spark killer.

10-3 Outdoor Unit (RAS-18 GAH-ES2, RAS-18 GA-ES2)

Common procedures for disassembling the outdoor unit.

11. EXPLODED VIEWS AND PARTS LIST

11-1. Indoor Unit (E-Parts Assy)

Exploded view and parts list for the indoor unit E-Parts Assembly.

11-2. Indoor Unit

Exploded view and parts list for the indoor unit.

11-3. Outdoor Unit (RAS-24 GAH-ES2)

Exploded view and parts list for the Outdoor Unit RAS-24GAH-ES2.

11-4. Outdoor Unit (RAS-18 GAH-ES2)

Exploded view and parts list for the Outdoor Unit RAS-18GAH-ES2.

11-5. Outdoor Unit (RAS-24 GA-ES2)

Exploded view and parts list for the Outdoor Unit RAS-24GA-ES2.

11-6. Outdoor Unit (RAS-18 GA-ES2)

Exploded view and parts list for the Outdoor Unit RAS-18GA-ES2.

Toshiba RAS-18GAH-ES2 Specifications

General IconGeneral
BrandToshiba
ModelRAS-18GAH-ES2
CategoryAir Conditioner
LanguageEnglish

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