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Toshiba RAS-07NKHD-E User Manual

Toshiba RAS-07NKHD-E
86 pages
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FILE NO. SVM-04022-1
SERVICE MANUAL
AIR CONDITIONER
SPLIT WALL TYPE
RAS-13NKHD-E / RAS-13UAH-E3
RAS-10NKHD-E / RAS-10UAH-E3
RAS-07NKHD-E / RAS-07UAH-E3
RAS-13NKD-E / RAS-13UA-E3
RAS-10NKD-E / RAS-10UA-E3
RAS-07NKD-E / RAS-07UA-E3
Revised on March, 2005

Table of Contents

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Toshiba RAS-07NKHD-E Specifications

General IconGeneral
BrandToshiba
ModelRAS-07NKHD-E
CategoryAir Conditioner
LanguageEnglish

Summary

Specifications

Construction Views

Indoor Unit Construction Views

Diagrams detailing the dimensions and features of the indoor unit.

Outdoor Unit Construction Views (RAS-13/10UAH-E3, RAS-13/10UA-E3)

Diagrams for outdoor units RAS-13/10UAH-E3 and RAS-13/10UA-E3, showing dimensions and mounting.

Outdoor Unit Construction Views (RAS-07UAH-E3, RAS-07UA-E3)

Diagrams for outdoor units RAS-07UAH-E3 and RAS-07UA-E3, showing dimensions and mounting.

Wiring Diagrams

Wiring Diagram: RAS-13NKHD-E / RAS-13UAH-E3

Detailed wiring schematic for the RAS-13NKHD-E and RAS-13UAH-E3 models.

Wiring Diagram: RAS-10/07NKHD/UAH-E3 Series

Wiring schematics for RAS-10NKHD/UAH-E3 and RAS-07NKHD/UAH-E3 models.

Wiring Diagram: RAS-13NKD-E / RAS-13UA-E3

Detailed wiring schematic for the RAS-13NKD-E and RAS-13UA-E3 models.

Wiring Diagram: RAS-10/07NKD/UA-E3 Series

Wiring schematics for RAS-10NKD/UA-E3 and RAS-07NKD/UA-E3 models.

Electrical Parts Specifications

Indoor Unit Electrical Parts

List and specifications of electrical components for indoor units RAS-13/10/07NKHD-E.

Outdoor Unit Electrical Parts: RAS-13UAH-E3

List and specifications of electrical components for outdoor unit RAS-13UAH-E3.

Outdoor Unit Electrical Parts: RAS-10UAH-E3

List and specifications of electrical components for outdoor unit RAS-10UAH-E3.

Outdoor Unit Electrical Parts: RAS-07UAH-E3

List and specifications of electrical components for outdoor unit RAS-07UAH-E3.

Indoor Unit Electrical Parts: RAS-13/10/07NKD-E

List and specifications of electrical components for indoor units RAS-13/10/07NKD-E.

Outdoor Unit Electrical Parts: RAS-13UA-E3

List and specifications of electrical components for outdoor unit RAS-13UA-E3.

Outdoor Unit Electrical Parts: RAS-10UA-E3

List and specifications of electrical components for outdoor unit RAS-10UA-E3.

Outdoor Unit Electrical Parts: RAS-07UA-E3

List and specifications of electrical components for outdoor unit RAS-07UA-E3.

Refrigeration Cycle Diagrams

Refrigeration Cycle: RAS-13NKHD-E / RAS-13UAH-E3

Diagram showing refrigerant flow and operating parameters for RAS-13NKHD-E/RAS-13UAH-E3.

Refrigeration Cycle: RAS-10NKHD-E / RAS-10UAH-E3

Diagram showing refrigerant flow and operating parameters for RAS-10NKHD-E/RAS-10UAH-E3.

Refrigeration Cycle: RAS-07NKHD-E / RAS-07UAH-E3

Diagram showing refrigerant flow and operating parameters for RAS-07NKHD-E/RAS-07UAH-E3.

Refrigeration Cycle: RAS-13NKD-E / RAS-13UA-E3

Diagram showing refrigerant flow and operating parameters for RAS-13NKD-E/RAS-13UA-E3.

Refrigeration Cycle: RAS-10NKD-E / RAS-10UA-E3

Diagram showing refrigerant flow and operating parameters for RAS-10NKD-E/RAS-10UA-E3.

Refrigeration Cycle: RAS-07NKD-E / RAS-07UA-E3

Diagram showing refrigerant flow and operating parameters for RAS-07NKD-E/RAS-07UA-E3.

Control Block Diagrams

Control Block Diagram: Heat Pump Model

Control logic diagram for heat pump operation, detailing MCU and remote control functions.

Control Block Diagram: Cooling Model

Control logic diagram for cooling operation, detailing MCU and remote control functions.

Operation Description

Outline of Air Conditioner Control

Overview of the air conditioner's control system, components, and functions.

Louver Control Functions

Details on vertical air flow louver operation, including swing and fixed positions.

Indoor Fan Control (AC Fan Motor)

Explanation of indoor fan motor operation and speed control for different modes.

Description of Operation Circuit

Sequence of operations when turning on the unit and executing commands.

Fan Only Operation (NKD Series)

Fan Only mode operation, including AUTO and manual speed settings.

Cooling Operation Control

Control logic for compressor, outdoor fan, and display during cooling.

Dry Operation Control

Control logic for compressor, 4-way valve, and fans during dry operation.

Heating Operation Control (NKHD Series)

Control logic for compressor, 4-way valve, and fans during heating.

Automatic Operation Mode

How the unit selects between Cooling, Fan only, or Heating modes automatically.

Plasma Air-Purifier (PAP) Operation

Operating the Plasma Air-Purifier with other modes or independently.

Plasma Air-Purifier Operation Flowchart

Flowchart detailing Plasma Air-Purifier operation logic and error handling.

Indoor Fan & Plasma Air-Purifier Operation

Interaction between indoor fan speed and Plasma Air-Purifier operation.

Hi POWER Mode Operation

How Hi POWER mode affects cooling/heating operations and fan speed.

High-Temperature Limit Control (NKHD Series)

Control to prevent excessive rise in refrigerating cycle pressure.

Low-Temperature Limit Control

Control to prevent the indoor heat exchanger from freezing.

Defrost Operation (NKHD Series)

Procedure for defrosting the outdoor unit during heating operation.

Defrost Operation Start Conditions

Conditions that trigger the start of the defrost operation.

Defrost Operation Time Control

Details on the duration and cycles of the defrost operation.

Current Limit Control (NKHD Series)

Control to prevent compressor current from exceeding specified values.

Auto Restart Function

Functionality for automatic unit restart after power interruption.

Setting the Auto Restart Function

Guide on how to enable the auto restart function on the indoor unit.

Cancelling the Auto Restart Function

Guide on how to disable the auto restart function.

Filter Check Lamp Indicator

Explanation of the filter check lamp and how to reset it.

Turning Off the Filter Check Lamp

Instructions for turning off the filter check lamp.

Self-Cleaning Function

Details on the self-cleaning function for reducing coil humidity.

Cancelling the Self-Cleaning Function

Procedure to cancel the self-cleaning function.

Setting the Self-Cleaning Function

Procedure to set the self-cleaning function.

Installation Procedure

Installation Safety Cautions

Important safety precautions and warnings for qualified personnel during installation.

Indoor and Outdoor Unit Installation Diagram

Diagrams showing placement and connection points for indoor and outdoor units.

Optional Installation Parts

List of optional parts required for installation, including piping and insulation.

Accessory and Installation Parts

List of standard accessories and installation parts included with the unit.

Indoor Unit Installation Place

Guidelines for selecting an appropriate location for the indoor unit.

Indoor Unit Plate Mounting

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

Indoor Unit Electrical Work

Power source requirements and connection methods for indoor unit wiring.

Indoor Unit Wiring Connection

Step-by-step guide on how to connect the power cord to the indoor unit.

Indoor Unit Piping & Drain Hose Installation

Instructions for forming and installing refrigerant piping and drain hoses for the indoor unit.

Indoor Unit Fixing and Mounting

Steps for securely mounting the indoor unit onto the installation plate.

Indoor Unit Drainage

Instructions for routing and ensuring proper drainage from the indoor unit.

Outdoor Unit Installation Place

Guidelines for selecting an appropriate location for the outdoor unit.

Outdoor Unit Refrigerant Piping Connection

Steps for connecting refrigerant pipes, including cutting, flaring, and tightening.

Evacuating the Refrigerant System

Procedure for evacuating air and moisture from refrigerant pipes using a vacuum pump.

Outdoor Unit Wiring Connection

Instructions for connecting the connecting cable between indoor and outdoor units.

Remote Control Selector Switch Setup

Guide to setting the remote control selector switch for multi-unit installations.

Gas Leak Test Procedure

Method for checking refrigerant connections for gas leaks.

Troubleshooting

Troubleshooting Procedure Overview

General steps for troubleshooting, starting with basic checks and progressing to self-diagnosis.

Basic Check Items

Essential preliminary checks for power supply, cable connections, and unit operation.

Primary Judgement and Fault Diagnosis

Interpreting operational status and diagnosing faults based on lamp indicators.

Failure Diagnosis with Indicator Lamps

Diagnosing failures based on blinking patterns of the operation and timer lamps.

Self-Diagnosis via Remote Control

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

Using Remote Control in Service Mode

Step-by-step instructions for entering service mode and retrieving diagnostic codes.

Troubleshooting Flowcharts

Flowcharts to diagnose and resolve specific operational issues.

Troubleshooting: Remote Control & P.C. Board

Diagnosing issues with the remote control or the indoor unit's P.C. board.

Checking the P.C. Board

Procedures and precautions for inspecting the indoor unit's P.C. board for defects.

Shortening Restart Delay Timer

Instructions to shorten the restart delay timer duration using the remote control.

Setting/Cancelling Self-Cleaning Function

Guide to setting or cancelling the self-cleaning function.

Troubleshooting: Air Purifier & Minus Ion

Troubleshooting specific issues with the air purifier and minus ion generator.

Checking Air Purifier Functionality

Procedure to check if the air purifier and its components are functioning correctly.

Checking Minus Ion Generator Functionality

Procedure to check if the minus ion generator is functioning correctly.

Part Replacement

Indoor Unit Part Replacement

Procedures for removing and replacing parts of the indoor unit, starting with the front panel.

Indoor Unit Electrical Part Replacement

Procedure for replacing the indoor unit's electrical part box and LED unit.

Indoor Unit Horizontal Louver Replacement

Procedure for replacing the indoor unit's horizontal louver assembly.

Indoor Unit Heat Exchanger Replacement

Procedure for replacing the indoor unit's heat exchanger.

Indoor Unit Cross Flow Fan Replacement

Procedure for replacing the indoor unit's cross flow fan and motor.

Indoor Unit Base Bearing Replacement

Procedure for replacing the indoor unit's base bearing assembly.

Outdoor Unit Part Replacement

Common procedure for disassembling the outdoor unit's cabinets and covers.

Outdoor Unit Compressor Capacitor Replacement

Procedure for replacing the outdoor unit's compressor capacitor.

Outdoor Unit Fan Motor Capacitor Replacement

Procedure for replacing the outdoor unit's fan motor capacitor.

Exploded Views and Parts List

Indoor Unit Exploded View & Parts List (E-Parts Assy)

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

Indoor Unit Exploded View & Parts List

Exploded view and parts list for the indoor unit, covering various assemblies.

Outdoor Unit Exploded View & Parts List (RAS-13UAH-E3)

Exploded view and parts list for the outdoor unit RAS-13UAH-E3.

Outdoor Unit Exploded View & Parts List (RAS-10UAH-E3)

Exploded view and parts list for the outdoor unit RAS-10UAH-E3.

Outdoor Unit Exploded View & Parts List (RAS-13UA-E3)

Exploded view and parts list for the outdoor unit RAS-13UA-E3.

Outdoor Unit Exploded View & Parts List (RAS-10UA-E3)

Exploded view and parts list for the outdoor unit RAS-10UA-E3.

Outdoor Unit Exploded View & Parts List (RAS-07UA-E3)

Exploded view and parts list for the outdoor unit RAS-07UA-E3.

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