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Toshiba RAS-167SKV-E User Manual

Toshiba RAS-167SKV-E
110 pages
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R410A
SERVICE MANUAL
SPLIT TYPE
Indoor Unit Outdoor Unit
<High Wall, Heat Pump Type> <Heat Pump Type>
RAS-137SKV-E RAS-137SAV-E
RAS-167SKV-E RAS-167SAV-E
Feb, 2008
FILE NO. SVM-08011

Table of Contents

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Toshiba RAS-167SKV-E Specifications

General IconGeneral
TypeSplit System
Heating Capacity5.6 kW
Power Supply220-240V, 50Hz
RefrigerantR410A
Energy Efficiency Ratio (Cooling)3.21
Energy Efficiency Ratio (Heating)3.61
Indoor Unit Weight9 kg
Noise Level (Outdoor)50 dB(A)

Summary

TOSHIBA SERVICE MANUAL

1. SAFETY PRECAUTIONS

General Safety Guidelines

Essential safety rules for public use, installation, and servicing.

Electrical and Refrigerant Hazards

Warnings about high voltage, electrical shock, and refrigerant handling risks.

2. SPECIFICATIONS

3. REFRIGERANT R410A HANDLING

R410A Safety and Servicing Precautions

Critical safety measures for R410A refrigerant during installation and servicing.

Refrigerant Piping Installation Guide

Procedures and material requirements for installing refrigerant piping.

Required Tools for R410A Systems

List of specialized tools needed for R410A refrigerant handling and installation.

Refrigerant Recharging Procedures

Step-by-step instructions for recharging refrigerant into the air conditioning system.

Brazing Techniques for Refrigerant Pipes

Guidelines on brazing materials, flux, and methods for pipe connections.

5. WIRING DIAGRAMS

7. REFRIGERANT CYCLE DIAGRAM

9. OPERATION DESCRIPTION

Air Conditioner Control System Overview

Explanation of the capacity-variable control system and unit roles.

Indoor Heat Exchanger Temperature Protection

Protective control based on indoor heat exchanger temperature to prevent freezing.

Defrost Operation in Heating Mode

Procedure for defrosting the outdoor heat exchanger during heating operation.

10. INSTALLATION PROCEDURE

Indoor and Outdoor Unit Installation Diagrams

Visual guides for the correct placement and mounting of indoor and outdoor units.

Refrigerant Addition Precautions and Methods

Guidelines for safely and accurately adding refrigerant, including necessary tools.

Flare Pipe Connection and Evacuation

Torque specifications for flare connections and steps for system evacuation.

Test Operation and Controller Setup

Procedures for gas leak testing, system test operation, and remote controller setup.

11. TROUBLESHOOTING GUIDE

General Troubleshooting Procedures and Safety

Overview of diagnostic methods and essential safety precautions for troubleshooting.

Outdoor Unit Control Section Inspection Safety

Safety measures and techniques for inspecting electrical components in the outdoor unit controller.

Indoor Unit LED Indicator Diagnosis

Interpreting indoor unit LED flashes to identify specific fault conditions.

Remote Controller Self-Diagnosis Mode

How to use the remote controller service mode to diagnose faults via check codes.

Troubleshooting: Indoor Unit Power Failure

Diagnostic steps for when the indoor unit fails to power on.

Troubleshooting: Remote Controller Malfunctions

Flowchart for diagnosing and resolving issues with the remote controller.

Troubleshooting: Wiring and Serial Signal Issues

Diagnosing faults related to inter-unit wiring and serial communication.

Outdoor Unit Inverter Assembly Diagnosis

Flowchart for diagnosing problems within the outdoor unit's inverter assembly.

Indoor Unit P.C. Board Inspection Procedures

Guidelines for inspecting the indoor unit's main printed circuit board for faults.

12. HOW TO REPLACE MAIN PARTS

Indoor Unit - Front Panel Removal/Installation

Step-by-step guide for replacing the front panel of the indoor unit.

Indoor Unit - Electric Parts Box Replacement

Procedures for removing and installing the electric parts box assembly.

Microcomputer and P.C. Board Replacement

Procedures for replacing the microcomputer and associated P.C. board.

Outdoor Unit - Inverter Assembly Replacement

Steps for safely replacing the inverter assembly, including capacitor discharge.

Outdoor Unit - Control Board Assembly Replacement

Procedures for replacing the control board assembly and its connectors.

Outdoor Unit - Compressor and Reactor Replacement

Procedures for removing and installing the compressor and reactor.

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