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Hitachi RAS-12-HNP User Manual

Hitachi RAS-12-HNP
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-12-HNP Specifications

General IconGeneral
TypeSplit System
Cooling Capacity12000 BTU/h
Outdoor Unit Noise Level50 dB(A)
Indoor Unit Weight8.5 kg
Outdoor Unit Weight32 kg

Summary

General information

1.1 General information

Basic notes, introduction, and environmental aspects of the UTOPIA series.

1.2 Safety

Safety precautions, symbols, and regulatory compliance for system design and installation.

1.3 Product guide

Classification and guide for outdoor and indoor unit models.

Unit Installation

2.1 Safety summary

Critical safety guidelines for unit installation, covering DANGER and CAUTION points.

2.2 Transportation of outdoor unit

Safe procedures for transporting outdoor units, including hanging methods and gross weight.

2.5 Installation space (Initial ckeck)

Specifies required installation clearances and basic dimensions for outdoor units.

2.6 Place provision

Guidelines for selecting and preparing installation locations, including foundations and drainage.

2.7 Optional parts and installation

Covers the installation of optional accessories like air flow guides, wind guards, and snow protection hoods.

Piping work and refrigerant charge

3.1 General notes before performing pipe work

General guidelines and materials for refrigerant piping installation.

3.2 Piping connection for outdoor unit

Detailed instructions for connecting refrigerant piping to outdoor units.

3.3 Refrigerant piping range

Specifies permissible piping lengths, system configurations, and combinations.

3.4 Refrigerant charge

Procedures and cautions for charging refrigerant, including quantity calculation.

3.5 Caution in case of refrigerant leakage

Safety measures and concentration limits related to refrigerant leakage.

3.6 Piping work for compatibility with the piping of current installations where is used R22 or R407C.

Guidelines for using existing piping with new units, including cleaning and renewal kits.

Electrical wiring

4.1 General notes

Essential safety precautions and general checks for electrical wiring.

4.2 Electrical wiring connection for the outdoor unit

Step-by-step guide for connecting electrical wiring to outdoor units.

4.3 Setting the DIP switches for the outdoor unit

Explains DIP switch functions and settings for various operational modes.

4.4 Common wiring

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

4.5 H-LINK II system

Details the features and specifications of the H-LINK II wiring system.

4.7 Electrical wiring diagrams

Provides detailed wiring diagrams for various outdoor unit models and power supplies.

Control System

5.1 Device control system

Explains control subjects, purpose, and functions for cooling, heating, and defrost operations.

5.2 Outdoor units PCB

Identifies connectors, switches, and LEDs on the outdoor unit PCBs for various models.

5.3 Protection and safety control

Details compressor protection devices and safety control settings for outdoor units.

5.4 Standard operation sequence

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

5.5 Standard control functions

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

Optional functions

6.1 Optional input and output signals (By 7-segment display)

Describes available ports and signals for configuring optional functions via the 7-segment display.

6.2 Optional functions (By 7-segment display)

Details the setting and description of optional functions controllable via the 7-segment display.

6.3 Optional functions (By remote control switch)

Lists optional functions configurable through the remote control switch (PC-ART).

Test run

7.1 Checking procedure before the test run

Essential checks before initiating the test run, including electrical and refrigerant connections.

7.2 Test run procedure using the remote control switch (PC-ART)

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

7.3 Test run procedure using the remote control switch (PC-ARF)

Instructions for conducting a test run using the PC-ARF remote control.

7.4 Test run procedure using the wireless remote control switch (PC-LH3A/B)

Procedure for performing a test run using the wireless remote control.

7.5 Test run procedure from the outdoor unit side

Steps for initiating a test run directly from the outdoor unit's DIP switches.

7.6 Check list

Comprehensive checklist for verifying test run and compressor operations.

Troubleshooting

8.1 Initial troubleshooting

Basic checks for common issues using the 7-segment display, power supply, and transmission.

8.2 Troubleshooting procedure

Detailed procedures for diagnosing and resolving issues based on alarm codes and abnormal operations.

8.3 Troubleshooting in check mode

Guidance on using the remote control and 7-segment display for diagnosing system faults.

8.4 Checking procedure for main parts

Procedures for checking critical components like inverters, capacitors, and fan motors.

Spare parts

9.1 RAS-(2-2.5)HVNP

Lists cycle and structural parts for RAS-(2-2.5)HVNP models.

9.2 RAS-3HVNC

Lists cycle and structural parts for RAS-3HVNC models.

9.3 RAS-3HVNPE

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

9.4 RAS-(4-6)H(V)NPE

Lists cycle, structural, and electrical parts for RAS-(4-6)H(V)NPE models.

9.5 RAS-(4-6)H(V)NCE

Lists cycle, structural, and electrical parts for RAS-(4-6)H(V)NCE models.

9.6 RAS-(8-10)HN(P/C)E

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

9.7 RAS-12HN(P/C)

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

Servicing

10.1 Introduction

General introduction to servicing procedures, including safety warnings.

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

Detailed procedures for servicing outdoor units of specific models.

10.3 Servicing for Premium series

Servicing procedures for premium series outdoor units, categorized by model.

10.4 Servicing for Standard Series

Servicing procedures for standard series outdoor units, categorized by model.

Electrical checks of main parts

11.1 Inverter

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

11.2 Thermistor

Explains the function and characteristics of thermistors used in outdoor units.

11.3 Electronic expansion valve

Describes the electronic expansion valve's operation and specifications.

11.4 High pressure protection device

Explains the function and activation conditions of high-pressure protection devices.

11.5 Noise filter (NF)

Details the specifications and circuit diagrams for noise filters.

11.6 Capacitor (CB1 CB2)

Provides specifications for capacitors used in the inverter circuit.

11.7 Reactor (DCL)

Lists specifications and circuit diagrams for reactors used in the inverter.

11.8 Scroll compressor

Explains the reliable mechanism and principle of compression for scroll compressors.

Maintenance notes

12.1 General notes

General guidelines for maintenance, including power source checks, compressor issues, and sound.

12.2 Maintenance work

Routine maintenance tasks for indoor and outdoor units, covering fans, heat exchangers, and electrical equipment.

12.3 Service and maintenance record

Provides a template for recording service and maintenance activities.

12.4 Service and maintenance record using the 7-segment display

Explains how to use the 7-segment display for service and maintenance records.

12.5 Service and maintenance record by remote control switch

Details how to use the remote control switch for service and maintenance records.

12.6 Pump-down method for replacing the compressor

Step-by-step procedure for the pump-down method required for compressor replacement.

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