Hitachi RAS-H(V)RNME-AF User manual

Printed in SpainSMGB0070 rev. 1 - 08/2011
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).
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 - Políg. Ind. Can Torrella
08233 Vacarisses (Barcelona) España
SMGB0070 rev. 1 - 08/2011
RWM-FSN3E Indoor units
RAS-H(V)RNME-AF Outdoor units
RAS-HVRN2 Outdoor unit
Service Manual
YUTAKI S SERIES
YUTAKI S SERIES

Contents
SMGB0070 rev. 1 - 08/2011
3
Contents
General Information
Unit installation
Piping work and refrigerant charge
Electrical wiring
Control system
User interface
Optional functions
Commissioning
Electrical checks of the main parts
Spare parts
Servicing
Troubleshooting
1
2
3
4
5
6
7
8
9
10
11
12

Index
SMGB0070 rev. 1 - 08/2011
V
Index
Contents .............................................................................................................................. 3
1. General information ....................................................................................................... 1
1.1 General information ....................................................................................................................................2
1.1.1 General notes.................................................................................................................................................. 2
1.1.2 Introduction...................................................................................................................................................... 2
1.1.3 Environtment-friendly units.............................................................................................................................. 3
1.2 Applied symbols..........................................................................................................................................4
1.3 Product guide..............................................................................................................................................5
1.3.1 Classication of indoor unit models................................................................................................................. 5
1.3.2 Classication of outdoor unit models............................................................................................................... 5
1.3.3 Classication of Domestic Hot Water Tank accessory .................................................................................... 6
1.3.4 Product guide: indoor unit ............................................................................................................................... 6
1.3.5 Product guide: outdoor unit ............................................................................................................................. 7
1.3.6 Accessory code list.......................................................................................................................................... 7
2. Unit installation............................................................................................................. 11
2.1 Outdoor unit installation............................................................................................................................12
2.1.1 Initial check.................................................................................................................................................... 12
2.1.2 Transportation of outdoor unit ....................................................................................................................... 13
2.1.3 Center of gravity ............................................................................................................................................ 14
2.1.4 Factory-supplied accessories for RAS-(8-10)HRNME-AF ............................................................................ 15
2.1.5 Installation space........................................................................................................................................... 16
2.1.8 Installation place provision ............................................................................................................................ 26
2.1.9 Optional parts and installation ....................................................................................................................... 29
2.2 Indoor unit installation...............................................................................................................................48
2.2.1 Selection of the installation location .............................................................................................................. 48
2.2.2 Wall mounting procedure............................................................................................................................... 49
2.2.3 Cover assembly............................................................................................................................................. 50
2.2.4 Drain pan assembly....................................................................................................................................... 51
2.2.5 Service space................................................................................................................................................ 51
2.3 DHWT - Domestic Hot Water Tank ...........................................................................................................52
2.3.1 Name of parts................................................................................................................................................ 52
2.3.2 Unit installation .............................................................................................................................................. 53
2.3.3 Selection procedure for DHWT units............................................................................................................. 53
2.3.4 Working space............................................................................................................................................... 53

Index
SMGB0070 rev. 1 - 08/2011
VI
3. Piping work and refrigerant charge............................................................................ 55
3.1 Refrigerant and water pipe work...............................................................................................................56
3.1.1 General notes before performing pipe work .................................................................................................. 56
3.1.2 Suspension of refrigerant and water pipes.................................................................................................... 56
3.1.3 Pipe work and connection ............................................................................................................................. 57
3.2 Water pipe work and connection ..............................................................................................................67
3.2.1 General notes................................................................................................................................................ 67
3.2.2 Water piping connection ................................................................................................................................ 68
3.2.3 Draining pipe work......................................................................................................................................... 69
3.2.4 Circuit water lling-in ..................................................................................................................................... 69
3.2.5 Water ow adjustment ................................................................................................................................... 69
3.3 Pressure charts.........................................................................................................................................71
3.4 DHWT - Domestic Hot Water Tank ...........................................................................................................73
3.4.1 Hydraulic circuit ............................................................................................................................................. 73
3.4.2 Pressure drop................................................................................................................................................ 74
4. Electrical wiring............................................................................................................ 75
4.1 Unit electrical wiring and connection ........................................................................................................76
4.1.1 General check ............................................................................................................................................... 76
4.1.2 Electrical connection of outdoor unit ............................................................................................................. 77
4.1.3 Electrical connection of indoor unit................................................................................................................ 79
4.2 Setting of DIP switches and RSW switches..............................................................................................87
4.2.1 Outdoor unit................................................................................................................................................... 87
4.2.2 Indoor unit ..................................................................................................................................................... 90
4.3 Common wiring.........................................................................................................................................97
4.3.1 Electrical wiring between outdoor and indoor unit......................................................................................... 97
4.3.2 Wire sizes...................................................................................................................................................... 98
4.4 DHWT - Domestic Hot Water Tank ...........................................................................................................99
4.5 Electrical Wiring Diagrams......................................................................................................................106
4.5.1 Electrical wiring diagram for indoor unit ...................................................................................................... 106
4.5.2 Electrical wiring diagram for outdoor unit .................................................................................................... 108
5. Control system ........................................................................................................... 113
5.1 Device control system............................................................................................................................. 114
5.2 Printed circuit board................................................................................................................................ 115

Index
SMGB0070 rev. 1 - 08/2011
VII
5.2.1 Indoor unit ....................................................................................................................................................115
5.2.2 Outdoor unit..................................................................................................................................................116
5.3 Safety protection and control device....................................................................................................... 118
5.3.1 Indoor unit ....................................................................................................................................................118
5.3.2 Outdoor unit..................................................................................................................................................118
5.4 Standard control functions...................................................................................................................... 119
5.4.1 Indoor Unit....................................................................................................................................................119
6. LCD user’s interface................................................................................................... 179
6.1 Description of the hardware....................................................................................................................180
6.1.1 Button denitions......................................................................................................................................... 180
6.2 Comprehensive view ..............................................................................................................................180
6.3 Description of the icons ..........................................................................................................................182
6.4 Controller conguration...........................................................................................................................184
6.5 Unit conguration....................................................................................................................................185
6.5.1 Operation display ........................................................................................................................................ 185
6.5.2 Space heating conguration........................................................................................................................ 186
6.5.3 Space cooling conguration ........................................................................................................................ 188
6.5.4 DHW............................................................................................................................................................ 190
6.6 Installer access.......................................................................................................................................193
6.6.1 Unit conguration ........................................................................................................................................ 194
6.6.2 System conguration................................................................................................................................... 196
7. Optional functions...................................................................................................... 201
7.1 Indoor unit...............................................................................................................................................202
7.1.1 Floor screed drying function (circuits 1 & 2) ................................................................................................ 202
7.1.2 Automatic summer switch-off ...................................................................................................................... 203
7.1.3 Pump and valve seizure protection ............................................................................................................. 204
7.1.4 DHW anti-legionella protection function ...................................................................................................... 204
7.1.5 Tariff input (electrical tariff input).................................................................................................................. 205
7.1.6 Electrical heater or boiler emergency mode................................................................................................ 206
7.1.7 Step heater for 3-phase imbalance option .................................................................................................. 207
7.1.8 Hydraulic separator combination................................................................................................................. 207
7.1.9 Secondary outdoor sensor accessory ......................................................................................................... 207
7.1.10 Indoor external output signals ................................................................................................................... 208
7.2 Outdoor units ..........................................................................................................................................209
7.2.1 Available ports ............................................................................................................................................. 209

Index
SMGB0070 rev. 1 - 08/2011
VIII
7.2.2 Conguration ................................................................................................................................................211
7.2.3 Description of optional output signals.......................................................................................................... 213
8. Commissioning........................................................................................................... 215
8.1 Preliminary check ...................................................................................................................................216
8.1.1 Checking the unit......................................................................................................................................... 216
8.1.2 Electrical checking....................................................................................................................................... 216
8.1.3 Hydraulic circuit checking............................................................................................................................ 216
8.1.4 Checking the Refrigerant circuit .................................................................................................................. 217
8.2 Commissioning procedure......................................................................................................................217
8.3 Indoor unit test run..................................................................................................................................218
8.4 Outdoor unit test run...............................................................................................................................219
9. Electrical checks of the main parts .......................................................................... 221
9.1 Inverter....................................................................................................................................................222
9.1.1 Specications of inverter ............................................................................................................................. 222
9.1.2 Inverter time chart ....................................................................................................................................... 224
9.1.3 Protective function....................................................................................................................................... 225
9.1.4 Overload control .......................................................................................................................................... 226
9.2 Thermistor...............................................................................................................................................227
9.3 Electronic expansion valve .....................................................................................................................230
9.3.1 Electronic expansion valve for the outdoor unit........................................................................................... 230
9.3.2 Electronic expansion valve for the indoor unit............................................................................................. 231
9.4 High pressure protection device .............................................................................................................232
9.5 Noise lter (NF).......................................................................................................................................233
9.5.1 Noise lter for 1~ ......................................................................................................................................... 233
9.5.2 Noise lter for 3N~ ...................................................................................................................................... 234
9.6 Capacitor (CB1, CB2).............................................................................................................................234
9.7 Reactor (DCL).........................................................................................................................................235
9.7.1 Reactor (DCL) for 1~ .................................................................................................................................. 235
9.7.2 Reactor (DCL) for 3N~ ............................................................................................................................... 235
9.8 Scroll compressor...................................................................................................................................236

Index
SMGB0070 rev. 1 - 08/2011
IX
10. Spare parts................................................................................................................ 237
10.1 Outdoor units ........................................................................................................................................238
10.1.1 RAS-2HVRN2............................................................................................................................................ 238
10.1.2 RAS-3HVRNME-AF .................................................................................................................................. 240
10.1.3 RAS-(4-6)HVRNME-AF............................................................................................................................. 243
10.1.4 RAS-(4-6)HRNME-AF ............................................................................................................................... 246
10.1.5 RAS-(8/10)HRNME-AF ............................................................................................................................. 249
10.2 Indoor units...........................................................................................................................................252
11. Servicing.................................................................................................................... 257
11.1 Outdoor unit ..........................................................................................................................................258
11.1.1 RAS-2HVRN2............................................................................................................................................ 258
11.1.2 RAS-3HVRNME-AF................................................................................................................................... 265
11.1.3 RAS-(4-6)H(V)RNME-AF........................................................................................................................... 276
11.1.4 RAS-(8/10)HRNME-AF.............................................................................................................................. 292
11.2 Indoor unit .............................................................................................................................................308
11.2.1 Removing service cover ............................................................................................................................ 308
11.2.2 Replacing electrical components............................................................................................................... 309
11.2.3 Replacing hydraulic components............................................................................................................... 314
11.2.4 Replacing refrigerant parts ........................................................................................................................ 322
12. Troubleshooting ....................................................................................................... 327
12.1 Troubleshooting procedure...................................................................................................................328
12.1.1 Alarm code ................................................................................................................................................ 328
12.1.2 Troubleshooting by alarm code ................................................................................................................. 331
12.1.3 Troubleshooting in check mode................................................................................................................. 398
12.1.4 Troubleshooting using the 7 segment display (outdoor unit)..................................................................... 399
12.1.5 Procedure of checking other main parts.................................................................................................... 405

1 General information
SMGB0070 rev.1 - 08/2011
1
1
Index
1.1. General information.................................................................................................................................2
1.1.1. General notes .............................................................................................................................................. 2
1.1.2. Introduction.................................................................................................................................................. 2
1.1.3. Environtment-friendly units .......................................................................................................................... 3
1.2. Applied symbols ......................................................................................................................................4
1.3. Product guide ..........................................................................................................................................5
1.3.1. Classication of indoor unit models ............................................................................................................. 5
1.3.2. Classication of outdoor unit models........................................................................................................... 5
1.3.3. Classication of Domestic Hot Water Tank accessory................................................................................. 6
1.3.4. Product guide: indoor unit............................................................................................................................ 6
1.3.5. Product guide: outdoor unit ......................................................................................................................... 7
1.3.6. Accessory code list...................................................................................................................................... 7
1 . General information

1 General information
SMGB0070 rev.1 - 08/2011
2
1.1 General information
1.1.1 General notes
No part of this publication may be reproduced, copied, led or transmitted in any shape or form without the permission of
HITACHI Air Conditioning Products Europe, S.A.
Within the policy of continuous improvement of its products, HITACHI Air Conditioning Products Europe, S.A. reserves the
right to make changes at any time without prior notication and without being compelled to introducing them into products
subsequently sold. This document may therefore have been subject to amendments during the life of the product.
HITACHI makes every effort to offer correct, up-to-date documentation. Despite this, printing errors cannot be controlled by
HITACHI and are not its responsibility.
As a result, some of the images or data used to illustrate this document may not refer to specic models. No claims will be
accepted based on the data, illustrations and descriptions included in this manual.
No type of modication must be made to the equipment without prior, written authorisation from the manufacturer.
1.1.2 Introduction
The HITACHI’s YUTAKI S system is a heating and cooling solution for the home with high energy efciency. The system
consists of an outdoor unit (Inverter heat pump) and an indoor unit hydraulic module. The heat pump absorbs/sends heat
from/to the outside, and transfers it to the water circuit through the indoor unit hydraulic module.
YUTAKI S can be used both in winter time and in summer time, integrating heating and cooling systems, creating an air-
conditioned system and using just one energy source, the electricity.
For winter time
With the aim of reducing energy expenditure, there is a clear trend in the market to use medium and low temperature hea-
ting systems. Technological advances and improvements in insulation in the home enable to use of low temperature water
to heat homes. This results in more comfort and greater energy efciency.
YUTAKI S meets the necessary conditions to provide this type of application, fullling user’s needs.
The heat pump extracts the heat present in the air, increases its refrigerant temperature and transmits it to the water circuit
by means of indoor unit plate heat exchanger, where the heat is taken to radiators/(fan-coils), underoor heating compo-
nents or both (2nd temperature area).
As well as increased efciency and reduced CO2emissions due to the extraction of free heat from the outside air, the sys-
tem also boasts proven reliability and minimum maintenance. YUTAKI S provides a comfortable atmosphere all year long,
even in the coldest climates by means of the following system conguration possibilities:
• Mono-valent system: This is the most popular conguration. The air to water heat pump is sized to provide 80% of the
heating requirements on the coldest day of the year. An auxiliary electric heater (inside the unit) is used to provide the
additional heating required on cold days. This option usually results in an ideal balance between installation costs and
future energy consumption, as proven by its popularity in colder climates than ours, such as Sweden and Norway.
• Mono-energy system: The air to water heat pump is sized to provide 100% of the heating requirements on the coldest
day the year.
• Alternating Bi-valent system: For installations with an existing heating system by boiler and when is needed to heat the
supplied water temperature to the circuit up to high temperatures (80ºC), the boiler can be congured to alternate with
the air to water heat pump.

1 General information
SMGB0070 rev.1 - 08/2011
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1
For summer time
YUTAKI S system can be also used as cooling system for combination with fan-coils, refreshing oor or both (2nd tem-
perature area).
For fan-coils: It is possible to cool the water up to 5ºC.
For refreshing oor: It is possible to cool the water up to temperatures between 16 and 22ºC.
Domestic Hot Water (DHW) production
YUTAKI S also gives the option of sanitary hot water production, allowing the user to benet from the heat pump’s high
efciency and achieve hot water up to 70ºC. This is made possible by a Domestic Hot Water Tank accessory supplied by
HITACHI, which is heated in the heat pump at temperatures below 60ºC, using water pre-heated. An electric heater inte-
grated at the top of the stainless steel tank, increases the temperature in accordance with the user’s needs.
Additional combinations
YUTAKI S system can be used for the following additional combinations:
Solar combination for DHW
YUTAKI S system can be combined with solar panel.
The solar combination will enable to heat up the DHW by means of the sun. The solar combination is designed to transfer
the heat from the solar panels (sun radiation) to the heat exchanger of DHW tank.
Swimming pool operation
For summer sesion period, YUTAKI S can be used to heat up the swimming pool water temperature up to a value between
24 and 33ºC.
1.1.3 Environtment-friendly units
The new HITACHI’s YUTAKI S series uses environmentally-friendly R410A gas refrigerant, and the RoHS and Green Dot
regulations are applied throughout the manufacturing and installation process to reect HITACHI’s awareness of environ-
mental respect and commitment.
R410A is totally environmentally-friendly since it does not contain any substances that damage the ozone layer:
ODP (ozone depleting product) =0.
HITACHI’s YUTAKI S series are very efcient and allow signicant energy savings compared with conventional systems.
This energy efciency means less production of CO2, which causes the greenhouse effect.

1 General information
SMGB0070 rev.1 - 08/2011
4
1.2 Applied symbols
During normal air conditioning system design work or unit installation, greater attention must be paid in certain situations
requiring particular care in order to avoid damage to the unit, the installation or the building or property.
Situations that jeopardise the safety of those in the surrounding area or that put the unit itself at risk will be clearly indicated
in this manual.
To indicate these situations, a series of special symbols will be used to clearly identify these situations.
Pay close attention to these symbols and to the messages following them, as your safety and that of others depends on it.
DANGER
• Thetextfollowingthissymbolcontainsinformationandinstructionsrelatingdirectlytoyoursafetyandphy-
sicalwellbeing.
• Nottakingtheseinstructionsintoaccountcouldleadtoserious,veryseriousorevenfatalinjuriestoyouand
othersintheproximitiesoftheunit.
In the texts following the danger symbol you can also nd information on safe procedures during unit installation.
CAUTION
• Thetextfollowingthissymbolcontainsinformationandinstructionsrelatingdirectlytoyoursafetyandphy-
sicalwellbeing.
• Nottakingtheseinstructionsintoaccountcouldleadtominorinjuriestoyouandothersintheproximitiesof
theunit.
• Nottakingtheseinstructionsintoaccountcouldleadtounitdamage.
In the texts following the caution symbol you can also nd information on safe procedures during unit installation.
NOTE
• Thetextfollowingthissymbolcontainsinformationorinstructionsthatmaybeofuseorthatrequireamore
thoroughexplanation.
• Instructionsregardinginspectionstobemadeonunitpartsorsystemsmayalsobeincluded.

1 General information
SMGB0070 rev.1 - 08/2011
5
1
1.3 Product guide
1.3.1 Classication of indoor unit models
Unit type (indoor unit water module)
Position-separating hyphen (xed)
Compressor power (HP): 2.0, 3.0, 4.0, 5.0, 6.0, 8.0, 10.0.
System Free
R410A refrigerant
Series
E: Made in Europe
RWM - X.X FS N 3 E
1.3.2 Classication of outdoor unit models
RAS-HVRN2
Unit type (outdoor unit)
Position-separating hyphen (xed)
Compressor power (HP): 2.
Heat pump
V: Single phase unit (1~ 230V 50Hz)
-: Three phase unit (3N~ 400V 50Hz)
Inverter system
R410A refrigerant
Series
-: Made in Japan
RAS - X H X R N 2 X
RAS-H(V)RNME-AF
Unit type (outdoor unit)
Position-separating hyphen (xed)
Compressor power (HP): 3, 4, 5, 6, 8, 10.
Heat pump
V: Single phase unit (1~ 230V 50Hz)
-: Three phase unit (3N~ 400V 50Hz)
Inverter system
R410A refrigerant
IVX series
E: Made in Europe
YUTAKI S
RAS - X H X R N M E -AF

1 General information
SMGB0070 rev.1 - 08/2011
6
1.3.3 Classication of Domestic Hot Water Tank accessory
Unit type: Domestic Hot Water Tank
Capacity (L) 200-300 Litres
Tank type: E=Enamelled
S=Stainless
Position-separating hyphen (xed)
2.5 kW Electrical Heater
Series
E = Made in Europe
DHWT XXX X - H 1 E
1.3.4 Product guide: indoor unit
RWM-FSN3E indoor units
1~ 3N~
Unit Code Unit Code
RWM-2.0FSN3E 7E474103 - -
RWM-3.0FSN3E 7E474105 - -
RWM-4.0FSN3E 7E474107 RWM-4.0FSN3E 7E474107
RWM-5.0FSN3E 7E474108 RWM-5.0FSN3E 7E474108
RWM-6.0FSN3E 7E474109 RWM-6.0FSN3E 7E474109
- - RWM-8.0FSN3E 7E474110
- - RWM-10.0FSN3E 7E474111

1 General information
SMGB0070 rev.1 - 08/2011
7
1
1.3.5 Product guide: outdoor unit
RAS-H(V)RNME-AF outdoor units
RAS-HVRNME-AF units
1~
RAS-HRNME-AF units
3N~
Unit Code Unit Code
RAS-2HVRN2 60288093 - -
RAS-3HVRNME-AF 7E300018 - -
RAS-4HVRNME-AF 7E300020 RAS-4HRNME-AF 7E300120
RAS-5HVRNME-AF 7E300021 RAS-5HRNME-AF 7E300121
RAS-6HVRNME-AF 7E300022 RAS-6HRNME-AF 7E300122
- - RAS-8HRNME-AF 7E317110
- - RAS-10HRNME-AF 7E317111
1.3.6 Accessory code list
Room Thermostats
Accessory Name Code Figure
ATW-RTU-01 ON/OFF Thermostat
(Receiver + Room Thermostat) 7E543000
ATW-RTU-02 “Intelligent” Thermostat
(Receiver + Room Thermostat) 7E549900
ATW-RTU-03
2nd temperature Thermostat
(Only Room Thermostat)
*Only for “Intelligent” Thermostat application
7E549901

1 General information
SMGB0070 rev.1 - 08/2011
8
Other accessories
Accessory Name Code Figure
ATW-HSK-01
(BDHM1)
Hydraulic separator
7E549905
(BDHM1)
ATW-3WV-01
(VID3V1)
3-way valve
7E549906
(VID3V1)
ATW-AQT-01
(ASMSH1)
Aquastat
7E549907
(ASMSH1)
ATW-2KT-01
(CDH2Z1)
2nd temperature kit
7E549904
(CDH2Z1)
ATW-MVM-01
NEW
Mixing valve motor 7E549912
ATW-DPK-01 Drain pan kit
(For RWM-(2.0-6.0)FSN3E) 7E549902
ATW-DPK-02
NEW
Drain pan kit
(For RWM-(8.0/10.0)FSN3E) 7E549903
ATW-AOS-01 Auxilliary output signal box
(Relay board for additional output signals) 7E549910
ATW-2OS-01 Ambient temperature sensor
(2nd outdoor temperature sensor) 7E549909
ATW-WTS-02 Water temperature sensor
(2nd temperature control, boiler combination) 7E549911
ATW-SPS-01 Swimming pool sensor 7E549908

1 General information
SMGB0070 rev.1 - 08/2011
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1
Accessory Name Code Figure
ATW-WTS-02Y Water temperature sensor
(for Domestic Hot Water Tank) 9E500004
DHWT200E-2.5H1E Domestic Hot Water Tank Enamelled (200 L.) 70544000
DHWT300E-2.5H1E Domestic Hot Water Tank Enamelled (300 L.) 70544001
DHWT200S-2.5H1E Domestic Hot Water Tank Stainless (200 L.) 70544100
DHWT300S-2.5H1E Domestic Hot Water Tank Stainless (300 L.) 70544101
DHWT-CP-01 Permanent cathode protection for enamelled tank
(200 L.) 70544900
DHWT-CP-03 Permanent cathode protection for enamelled tank
(300 L.) 70544903
DHWT-CP-02 Permanent cathode protection for stainless tank
(200 L.) 70544901
DHWT-CP-04 Permanent cathode protection for stainless tank
(300 L.) 70544904
DHWT-SWG-01 Security valve 70544902