Toshiba RAS-18UFHP-E3 User Manual

SERVICE MANUAL
AIR-CONDITIONER
UNDER CEILING / CONSOLE TYPE
RAS-18UFHP-E3 / RAS-18UAH-E3
RAS-18UFP-E3 / RAS-18UA-E3
RAS-18UFPX3 / RAS-18UAX3
RAS-18UFP-AR3 / RAS-18UA-AR3
RAS-18UFPX3-T2 / RAS-18UAX3-T2
RAS-24UFHP-E3 / RAS-24UAH-E3
RAS-24UFP-E3 / RAS-24UA-E3
RAS-24UFPX3 / RAS-24UAX3
RAS-24UFP-AR3 / RAS-24UA-AR3
RAS-24UFPX3-T / RAS-24UAX3-T
FILE NO. SVM-04032
18 Class
(Heat pump model)
24 Class18 Class
(Cooling only model)
June 2004

Toshiba RAS-18UFHP-E3 Specifications

General

Brand	Toshiba
Model	RAS-18UFHP-E3
Category	Air Conditioner
Language	English

Summary

2. CONSTRUCTION VIEWS

2-1. Indoor Unit

Detailed diagrams and dimensions of the indoor unit for installation and component identification.

2-2. Outdoor Unit (RAS-18UAH-E3)

Diagrams and dimensions for the RAS-18UAH-E3 outdoor unit, showing installation details.

2-3. Outdoor Unit (RAS-18UA-E3, RAS-18UAX3, RAS-18UA-AR3)

Visual representation and dimensions for RAS-18UA-E3, RAS-18UAX3, and RAS-18UA-AR3 outdoor units.

2-4. Outdoor Unit (RAS-24UAH-E3, RAS-24UA-E3, RAS-24UAX3, RAS-24UA-AR3, RAS-24UAX3-T, RAS-18UAX3-T2)

Construction views and dimensions for various RAS-24UA and related outdoor units.

3. WIRING DIAGRAM

3-1. RAS-18UFHP-E3 / RAS-18UAH-E3

Electrical schematic detailing connections for RAS-18UFHP-E3 and RAS-18UAH-E3 models.

3-2. RAS-18UFP-E3 / RAS-18UA-E3, RAS-18UFPX3 / RAS-18UAX3

Wiring diagram for RAS-18UFP-E3, RAS-18UA-E3, RAS-18UFPX3, and RAS-18UAX3 models.

3-3. RAS-18UFP-AR3 / RAS-18UA-AR3

Wiring schematic for RAS-18UFP-AR3 and RAS-18UA-AR3 models.

3-4. RAS-18UFPX3-T2 / RAS-18UAX3-T2

Wiring diagram for RAS-18UFPX3-T2 and RAS-18UAX3-T2 models.

3-5. RAS-24UFHP-E3 / RAS-24UAH-E3

Electrical schematic for RAS-24UFHP-E3 and RAS-24UAH-E3 models.

3-6. RAS-24UFP-E3 / RAS-24UA-E3, RAS-24UFPX3 / RAS-24UAX3, RAS-24UFP-AR3 / RAS-24UA-AR3, RAS-24UFPX3-T / RAS-24UAX3-T

Wiring diagrams for various RAS-24UFP/UA models, including different series.

4. SPECIFICATION OF ELECTRICAL PARTS

4-1. Indoor Unit

List and specifications of electrical components used in the indoor unit.

4-2. Outdoor Unit (RAS-18UAH-E3)

Detailed specifications for electrical parts of the RAS-18UAH-E3 outdoor unit.

4-3. Outdoor Unit (RAS-18UAX3, RAS-18UA-E3)

Electrical component specifications for RAS-18UAX3 and RAS-18UA-E3 outdoor units.

4-4. Outdoor Unit (RAS-18UA-AR3)

Specifications of electrical parts for the RAS-18UA-AR3 outdoor unit.

4-5. Outdoor Unit (RAS-18UAX3-T2)

Electrical parts specifications for the RAS-18UAX3-T2 outdoor unit.

4-6. Outdoor Unit (RAS-24UAH-E3)

4-7. Outdoor Unit (RAS-24UA-E3, RAS-24UAX3, RAS-24UAX3-T)

4-8. Outdoor Unit (RAS-24UA-AR3)

6. CONTROL BLOCK DIAGRAM

6-1. RAS-18UFHP-E3, RAS-24UFHP-E3

6-2. RAS-18UFP-E3, RAS-18UFPX3, RAS-18UFP-AR3, RAS-18UFPX3-T2, RAS-24UFP-E3, RAS-24UFPX3, RAS-24UFP-AR3, RAS-24UFPX3-T

8. INSTALLATION PROCEDURE

8-1. Safety Cautions

Critical safety precautions to be followed before and during installation.

REQUIREMENT OF REPORT TO THE LOCAL POWER SUPPLIER

8. INSTALLATION PROCEDURE

8-2. Installation Diagram of Indoor and Outdoor Units

Visual guide showing placement and connections for indoor and outdoor units.

8-5-2. Refrigerant piping connection

Detailed steps for connecting the refrigerant pipes, including flaring.

8-5-4. Wiring connection

Instructions for connecting electrical wiring to the outdoor unit.

8-5-3. Evacuating

Procedures for evacuating the refrigerant system using a vacuum pump.

9. TROUBLESHOOTING CHART

9-1. Troubleshooting Procedure

General steps for diagnosing and resolving issues with the air conditioner.

9-4. Self-Diagnosis by Remote Control (Check Code)

Using the remote control to access and interpret self-diagnosis error codes.

9-5. How to Diagnose Faulty Parts

Diagnostic flowcharts to identify specific faulty parts based on symptoms.

9-6. Troubleshooting for Indoor Unit

Specific troubleshooting steps for issues related to the indoor unit.

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

9-8. Troubleshooting for P.C. Board

Procedures for troubleshooting and inspecting the Printed Circuit Board.

9-8-3. How to check outdoor P.C. board

Guide for inspecting the outdoor P.C. board for faults and damage.

9-2. Basic Check Items

Initial checks to perform before detailed troubleshooting.

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

Step-by-step guide to enter and use the remote control's service mode for diagnosis.

9-6-1. Power can not be turned on. (The unit does not operate at all.)

Procedure for when the indoor unit fails to power on or operate.

9-6-3. Compressor does not operate.

Troubleshooting steps for when the compressor fails to operate.

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

Guide for inspecting the indoor P.C. board for faults and damage.

9-2-2. Incorrect cable connection between indoor and outdoor units

9. TROUBLESHOOTING CHART

9-3. Primary Judgement

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

9-9. Troubleshooting for Remote Control

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

9-3-2. Failure diagnosis

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