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Hitachi RAS-6-HVNC User Manual

Hitachi RAS-6-HVNC
480 pages
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Printed in SpainSMGB0079 rev.0 - 01/2013
Hitachi air conditioning products are manufactured according to:
ISO 9001 of JQA, Japan for its Quality Management accordance with the
standard
ISO 14001 of JACO, Japan for its Environmental Management accordance with
the standard
Hitachi Air Conditioning Products Europe, S.A. is certified with:
ISO 9001 of AENOR, Spain for its Quality Management accordance with the
standard
ISO 14001 of AENOR Spain for its Environmental Management systems
accordance with the standard
Hitachi certifies that our products have met EU consumer safety, health and
environmental requirements.
Hitachi Air Conditioning Products Europe, S.A.
Ronda Shimizu, 1 - Polig. Ind. Can Torrella
08233 Vacarisses (Barcelona) Spain
HITACHI participates in the Eurovent Certification Programme; the certified
data of certified models are listed in the Eurovent Certification Online Directory
(www.eurovent-certification.com).
SMGB0079 rev. 0 - 01/2013
Service Manual
UTOPIA IVX PREMIUM / IVX STANDARD SERIES
H(V)N(P/C)(E)
UTOPIA IVX PREMIUM / IVX STANDARD SERIES
RAS-(2-6)HVNP(E)
RAS-(4-12)HNP(E)
RAS-(3-6)HVNC(E)
RAS-(4-12)HNC(E)

Table of Contents

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Hitachi RAS-6-HVNC Specifications

General IconGeneral
BrandHitachi
ModelRAS-6-HVNC
CategoryAir Conditioner
LanguageEnglish

Summary

General Information

General Information Details

Covers general notes, introduction to the UTOPIA series, and environmental aspects of the units.

Safety Precautions and Regulations

Details applied symbols for safety, norms, and regulations related to the equipment.

Product Guide and Model Classification

Provides classification of outdoor and indoor unit models and accessory codes.

Outdoor Unit Product Guide

Lists models, codes, and images for IVX Premium and IVX Standard outdoor units.

Outdoor Unit Accessory Code List

Lists various accessories for outdoor units, including snow protection hoods and air flow guides.

Indoor Units and Complementary Systems

Details product guides for RCI, RCIM, RCD, and RPC indoor units and optional panels.

Complementary Systems Guide

Provides product guides for RPK, RPF, RPFI indoor units and KPI energy/heat recovery units.

Unit Installation

Safety Summary for Unit Installation

Highlights critical safety precautions for installing air conditioning units, including DANGER and CAUTION notices.

Outdoor Unit Transportation and Handling

Provides guidelines and DANGER/CAUTION notes for safely transporting and hanging outdoor units.

Center of Gravity and Hanging Method

Illustrates center of gravity points and hanging methods for various outdoor unit models.

Factory-Supplied Accessories

Details factory-supplied accessories, specifically for the RAS-12HN(P/C) model.

Installation Space Requirements

Specifies basic installation space dimensions for different unit series.

Outdoor Unit Placement Guidelines

Provides detailed placement instructions for various outdoor unit models, including space and drainage.

Optional Parts and Installation

Details installation procedures for optional accessories like air flow guides, wind guards, and snow protection hoods.

Piping Work and Refrigerant Charge

General Notes Before Pipe Work

Covers piping materials, principles, suspension, and brazing techniques.

Outdoor Unit Piping Connection

Explains piping connections for different outdoor unit models and stop valve operation.

Refrigerant Piping Range and System Design

Details refrigerant piping length, header/line branch systems, size combinations, and system installation.

Refrigerant Charge Procedures

Provides guidance on refrigerant charge quantity, pressure checks, and leakage cautions.

Piping Compatibility and Renewal Kits

Covers piping compatibility with existing installations and renewal kit selection.

Drain Piping Installation

Details the installation of drain pipes and the use of drain bosses.

Electrical Wiring

General Electrical Wiring Notes

Provides essential safety precautions and general checks for electrical wiring.

Outdoor Unit Electrical Wiring Connections

Illustrates correct electrical wiring connections for various outdoor unit models.

DIP Switch Settings for Outdoor Unit

Details DIP switch quantity, position, functions, and settings for different operational modes.

Common Wiring and Wire Sizing

Covers common wiring practices between indoor and outdoor units, including wire size recommendations.

H-LINK II System Configuration

Explains features, specifications, and system connection examples for the H-LINK II.

System Control Configurations

Describes individual and simultaneous operation control methods for the system.

Electrical Wiring Diagrams by Model

Provides detailed wiring diagrams for various models and power supply configurations.

Control System

Device Control System Overview

Details the control logic for various components during cooling, heating, and defrost operations.

Outdoor Unit PCB Component Identification

Provides detailed diagrams and lists of connectors, switches, and LEDs for outdoor unit PCBs.

Protection and Safety Control Measures

Outlines protection devices and safety control settings for outdoor units.

Standard Operation Sequences

Illustrates the operational sequences for cooling, dry, heating, and defrost modes.

Standard Control Functions

Details standard control functions like freezing protection and high-pressure prevention.

Optional Functions

Optional Input and Output Signals

Details available ports, signals, settings, and descriptions for optional functions via 7-segment display.

Optional Functions Configuration (7-Segment Display)

Explains how to set and describe optional functions using the outdoor unit's 7-segment display.

Optional Functions (Remote Control Switch)

Lists available optional functions configurable via remote control switches like PC-ART.

Test Run Procedures

Pre-Test Run Checks

Covers essential checks before starting the test run, including power, wiring, and refrigerant.

Test Run Using PC-ART Remote Control

Step-by-step procedure for performing a test run using the PC-ART remote control switch.

Test Run Using PC-ARF Remote Control

Detailed procedure for executing a test run using the PC-ARF remote control switch.

Test Run Using Wireless Remote Control

Procedure for conducting a test run with the wireless remote control switch (PC-LH3A/B).

Test Run from Outdoor Unit Side

Explains how to perform a test run directly from the outdoor unit using DIP switches.

Test Run Checklists

Provides checklists for verifying operations and compressor conditions during test runs.

Troubleshooting Guide

Initial Troubleshooting Steps

Covers initial checks using the 7-segment display, power supply failures, and transmission issues.

Troubleshooting Procedures by Alarm Code

Details alarm displays, codes for outdoor/indoor units, and troubleshooting steps based on alarm codes.

Troubleshooting in Check Mode

Provides procedures for troubleshooting using remote controllers (PC-ART, PC-ARF) and the 7-segment display.

Checking Main Parts for Fault Diagnosis

Outlines procedures for checking key components like DIP-IPM inverters, capacitors, fan motors, and expansion valves.

Spare Parts Information

Spare Parts for RAS-(2-2.5)HVNP

Lists cycle and structural parts, and provides a detailed parts table for RAS-(2-2.5)HVNP.

Spare Parts for RAS-3HVNC

Details cycle and structural parts, and provides a parts table for RAS-3HVNC.

Spare Parts for RAS-3HVNPE

Lists cycle/structural parts, electrical parts, and names for RAS-3HVNPE.

Spare Parts for RAS-(4-6)H(V)NPE

Provides cycle/structural parts, electrical parts, and names for RAS-(4-6)H(V)NPE.

Spare Parts for RAS-(4-6)H(V)NCE

Details cycle/structural parts, electrical parts, and names for RAS-(4-6)H(V)NCE.

Spare Parts for RAS-(8-10)HN(P/C)E

Lists cycle/structural parts, electrical parts, and names for RAS-(8-10)HN(P/C)E.

Spare Parts for RAS-12HN(P/C)

Provides cycle/structural parts, electrical parts, and names for RAS-12HN(P/C).

Servicing Procedures

Introduction to Servicing

General introduction to servicing operations, including safety precautions for maintenance.

Servicing Outdoor Units RAS-(2-2.5)HVNP and RAS-3HVNC

Step-by-step instructions for removing components of outdoor units RAS-(2-2.5)HVNP and RAS-3HVNC.

Servicing Premium Series Outdoor Units

Detailed servicing procedures for premium series outdoor units, covering various models and components.

Servicing Standard Series Outdoor Units

Provides servicing procedures for standard series outdoor units, covering component removal for different models.

Electrical Checks of Main Parts

Inverter Specifications and Functions

Details inverter specifications, time charts, protective functions, and overload control.

Thermistor Checks and Characteristics

Explains checks for thermistors in outdoor units and provides resistance characteristics.

Electronic Expansion Valve Checks

Details the checking procedure for electronic expansion valves for indoor and outdoor units.

High Pressure Protection Device

Describes the function and activation of high pressure protection devices in various models.

Noise Filter (NF) Specifications

Provides specifications and circuit diagrams for noise filters used in the system.

Capacitor (CB1 CB2) Specifications

Details the specifications for capacitors used for changing alternating current to direct current for the inverter.

Reactor (DCL) Specifications

Provides specifications for reactors used in changing alternating current to direct current for the inverter.

Scroll Compressor Principles

Explains the reliable mechanism for low vibration and sound, and the principle of compression.

Maintenance Notes

General Maintenance Notes

Covers power source checks, wiring connections, compressor burnout causes, and operation issues.

Routine Maintenance Work

Details maintenance procedures for indoor and outdoor units, including fans, heat exchangers, and electrical equipment.

Service and Maintenance Records

Provides formats for recording service and maintenance activities using 7-segment displays and remote controls.

Pump-down Method for Compressor Replacement

Explains the pump-down method for replacing the compressor, including safety precautions and refrigerant collection.

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