Hitachi RAS-4-HNC User Manual

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)

Hitachi RAS-4-HNC Specifications

General

Brand	Hitachi
Model	RAS-4-HNC
Category	Air Conditioner
Language	English

Summary

Service Manual

1. General information

Covers essential information about the Hitachi UTOPIA series, including general notes, safety, and product guides.

2. Unit Installation

Details on the safe installation of the outdoor unit, including transportation, installation space, and placement provisions.

3. Piping work and refrigerant charge

Guidelines for refrigerant piping, connections, system installation, and refrigerant charging procedures.

4. Electrical wiring

Information on electrical wiring connections, DIP switch settings, common wiring, H-LINK II system, and wiring diagrams.

5. Control System

Explains the device control system, outdoor unit PCBs, protection controls, and standard operation sequences.

6. Optional functions

Details on optional input/output signals and functions that can be configured via the 7-segment display or remote control.

7. Test run

Provides procedures for checking and performing test runs using various remote control switches and from the outdoor unit side.

8. Troubleshooting

Guides for initial troubleshooting, alarm codes, check modes, and diagnosing issues with main parts.

9. Spare parts

Lists and illustrates spare parts for various UTOPIA series outdoor units, including cycle, structural, and electrical parts.

10. Servicing

Detailed procedures for servicing outdoor units, including removing various components like covers, fans, compressors, and electrical parts.

11. Electrial checks of main parts

Covers electrical checks for main components such as the inverter, thermistor, expansion valve, and protection devices.

12. Maintenance notes

Provides general notes on maintenance, specific checks, and records for service activities.