Hitachi YUTAMPO Series User manual
YUTAMPO SERIES
Indoor unit
YUTAMPO
TAW-(190/270)RHC
Outdoor unit
RAW-35RHC
Service Manual
General Index
SMGB0135 rev.0 - 03/2020
III
General Index
1. General information................................................................................................... 1
1.1 General information.................................................................................................................................2
1.1.1 General notes.................................................................................................................................................. 2
1.1.2 Introduction ..................................................................................................................................................... 2
1.2 Applied symbols ......................................................................................................................................3
1.3 Norms and Regulations...........................................................................................................................3
1.4 Product guide ..........................................................................................................................................4
1.4.1 Classication of the units................................................................................................................................. 4
1.4.1.1 Outdoor unit ....................................................................................................................................... 4
1.4.1.2 Indoor unit .......................................................................................................................................... 4
1.4.2 Product guide .................................................................................................................................................. 5
1.4.2.1 Outdoor unit ....................................................................................................................................... 5
1.4.2.2 Indoor unit .......................................................................................................................................... 5
1.4.3 Accessory code list.......................................................................................................................................... 6
2. Preparation ................................................................................................................. 7
2.1 Name of each part...................................................................................................................................8
2.1.1 Tank unit TAW-(190-270)RHC......................................................................................................................... 8
2.1.2 Outdoor unit RAW-35RHC .............................................................................................................................. 8
2.2 Name and function of control panel.........................................................................................................9
2.3 Preparing for operation.......................................................................................................................... 11
2.3.1 Filling up the tank ...........................................................................................................................................11
2.3.2 Turning on the power......................................................................................................................................11
2.4 Setting the language .............................................................................................................................12
2.5 Setting the current time .........................................................................................................................12
2.6 Setting hot water temperature...............................................................................................................13
3. Control functions ..................................................................................................... 15
3.1 System diagram ....................................................................................................................................16
3.2 Basic operation......................................................................................................................................17
3.2.1 Operating procedures.................................................................................................................................... 17
3.2.2 Stopping ........................................................................................................................................................ 17
3.3 Standard Operation without Electrical Heater .......................................................................................18
3.4 DHW Heater function ............................................................................................................................19
3.4.1 High Demand Mode ...................................................................................................................................... 19
3.4.2 Standard mode.............................................................................................................................................. 20
General Index
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3.5 Anti Legionella function .........................................................................................................................21
3.6 Boost function........................................................................................................................................22
3.7 Emergency function...............................................................................................................................23
3.8 Night Shift Function...............................................................................................................................24
3.9 Circuit Pump - DHW Recirculation function...........................................................................................25
3.10 Timers function......................................................................................................................................26
3.10.1 Setting of Simple timer ................................................................................................................................ 26
3.10.2 Setting of Schedule timer ............................................................................................................................ 26
3.11 Central Operation functions...................................................................................................................27
3.12 Smart function .......................................................................................................................................28
3.12.1 SG Ready Function..................................................................................................................................... 29
3.13 Energy conguration function................................................................................................................30
3.14 Pump down procedure function.............................................................................................................31
3.15 Quick action function.............................................................................................................................32
3.16 Inputs and outputs.................................................................................................................................32
3.16.1 Inputs........................................................................................................................................................... 32
3.16.2 Outputs........................................................................................................................................................ 32
3.17 Operation information............................................................................................................................33
3.18 Controller Settings.................................................................................................................................33
3.19 About ....................................................................................................................................................34
4. Electrical checks of main parts .............................................................................. 35
4.1 Outdoor unit...........................................................................................................................................36
4.1.1 Power circuit.................................................................................................................................................. 36
4.1.2 Power circuit (low voltage) ............................................................................................................................ 38
4.1.3 PCB for power circuit..................................................................................................................................... 39
4.1.4 Reversing valve control circuit....................................................................................................................... 39
4.1.5 Temperature detection circuit ........................................................................................................................ 40
4.1.6 Electric expansion valve circuit ..................................................................................................................... 41
4.1.7 DC fan motor control circuit........................................................................................................................... 42
4.1.8 Fan motor ..................................................................................................................................................... 43
4.1.9 Reactor.......................................................................................................................................................... 43
4.1.10 Compressor motor....................................................................................................................................... 44
4.1.11 Thermistor for outside air temperature (Ta) ................................................................................................. 45
4.1.12 Thermistor for overheat temperature (Td) ................................................................................................... 46
4.1.13 Thermistor for defrost (HEX) temperature (Te)............................................................................................ 47
4.2 Indoor unit .............................................................................................................................................48
General Index
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V
4.2.1 Safety thermostat (water temperature safety device).................................................................................... 48
4.2.2 Electrical heater ............................................................................................................................................ 49
4.2.3 DHW Thermistor............................................................................................................................................ 49
5. Servicing................................................................................................................... 51
5.1 Outdoor unit...........................................................................................................................................52
5.1.1 Procedure for disassembly and reassembly the outdoor unit ....................................................................... 52
5.2 Indoor unit .............................................................................................................................................53
5.2.1 Removing the service cover .......................................................................................................................... 53
5.2.2 Replacement of the LCD Controller .............................................................................................................. 53
5.2.3 Replacement the PCB................................................................................................................................... 54
5.2.4 Replacement of the electrical heater............................................................................................................. 54
5.2.5 Replacement of the thermistor ...................................................................................................................... 55
5.2.6 Replacement of the safety thermostat........................................................................................................... 55
5.2.7 Replacing the Mg Anode rod ......................................................................................................................... 56
6. Troubleshooting....................................................................................................... 57
6.1 Outdoor unit...........................................................................................................................................58
6.1.1 Discharge procedure and power shut o method for power circuit ............................................................... 58
6.1.2 Troubleshooting support................................................................................................................................ 60
6.1.3 Self-diagnosis lighting mode ......................................................................................................................... 61
6.1.4 Checking the electrical parts of the outdoor unit ........................................................................................... 64
6.1.5 Checking the refrigerant cycle....................................................................................................................... 67
6.1.6 How to run the indoor unit with the outdoor unit test switch .......................................................................... 68
6.1.7 Service Call Q&A........................................................................................................................................... 69
6.2 Indoor unit ............................................................................................................................................70
6.2.1 Operation....................................................................................................................................................... 71
6.2.2 Troubleshooting by alarm code (related to tank) ........................................................................................... 72
6.3 Troubleshooting by protection code (Outdoor unit) ............................................................................... 74
7. Maintenance notes................................................................................................... 81
7.1 Maintenance work .................................................................................................................................82
7.1.1 Outdoor unit................................................................................................................................................... 82
7.1.2 Indoor unit ..................................................................................................................................................... 83
1. General information
1 General information
SMGB0135 rev.0 - 06/2020
1
1
Index
1.1 General information.................................................................................................................................2
1.1.1 General notes.................................................................................................................................................. 2
1.1.2 Introduction ..................................................................................................................................................... 2
1.2 Applied symbols ......................................................................................................................................3
1.3 Norms and Regulations...........................................................................................................................3
1.4 Product guide ..........................................................................................................................................4
1.4.1 Classication of the units................................................................................................................................. 4
1.4.1.1 Outdoor unit ....................................................................................................................................... 4
1.4.1.2 Indoor unit .......................................................................................................................................... 4
1.4.2 Product guide .................................................................................................................................................. 5
1.4.2.1 Outdoor unit ....................................................................................................................................... 5
1.4.2.2 Indoor unit .......................................................................................................................................... 5
1.4.3 Accessory code list.......................................................................................................................................... 6
1.1 General information
1.1.1 General notes
© Copyright 2020 Johnson Controls-Hitachi Air Conditioning Spain, S.A.U. – All rights reserved.
No part of this publication may be reproduced, copied, led or transmitted in any shape or form without the permission of
Johnson Controls-Hitachi Air Conditioning Spain, S.A.U.
Within the policy of continuous improvement of its products, Johnson Controls-Hitachi Air Conditioning Spain, S.A.U.
reserves the right to make changes at any time without prior notication and without being compelled to introducing
them into previously sold products. This document may therefore have been subject to amendments during the life of the
product.
Hitachi makes every eort to oer 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 specic models. No claims will
be accepted based on the data, illustrations and descriptions included in this manual.
No type of modication must be made to the equipment without prior, written authorization from the manufacturer.
?NOTE
This air to water heat pump has been designed for standard water heating for human beings. For use in other applications, please contact
your Hitachi dealer or service contractor.
1.1.2 Introduction
Hitachi proudly announces the newest R32 complete range of Heat Pump Water Heater in its award-winning YUTAMPO
range.
The YUTAMPO units produce domestic hot water like any electrical heater, oil or gas boiler, but they do so by
transforming renewable energy from the outside air and storing it into a heat energy tank. Heat pump water heaters
extract the free energy present in the air, which is enough to heat a water tank up to a comfortable temperature, even on
the coldest winter day. Every kW of electricity used to power the heat pump can yield up to more than 5 kW of energy for
heating; this provides savings of up to 80% on heating expenses compared to a traditional fossil fuel boiler.
The system is simple to control; its new user controller (PC-ARFTE) improves the acclaimed and successful design used
with the existing LCD controller, and provides a great deal of new functions.
1 General information
General information
SMGB0135 rev.0 - 06/2020
2
1 General information
Applied symbols
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1
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 pose a risk to the safety of those in the surrounding area or to the unit itself are clearly indicated in this
manual.
A series of special symbols are 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
• Thetextfollowingthissymbolcontainsinformationandinstructionsrelatingdirectlytoyoursafety.
• Nottakingtheseinstructionsintoaccountcouldleadtoserious,veryseriousorevenfatalinjuriestoyouandothers.
In the texts following the danger symbol you can also nd information on safety procedures during unit installation.
!CAUTION
• The text following this symbol contains information and instructions relating directly to your safety.
• Not taking these instructions into account could lead to minor injuries to you and others.
• Not taking these instructions into account could lead to unit damage.
In the texts following the caution symbol you can also nd information on safety 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.
1.3 Norms and Regulations
Following Regulation EU No. 517/2014 on Certain Fluorinated Greenhouse gases, it is mandatory to ll in the label
attached to the unit with the total amount of refrigerant charged on the installation.
Do not vent R32 into the atmosphere: R32 is uorinated greenhouse gases covered by the Kyoto protocol global
warming potential (GWP) R32 = 675.
Tn of CO2 equivalent of uorinated greenhouse gases contained is calculated by indicated GWP * Total Charge (in kg
indicated in the product label and divided by 1000.
Appropriaterefrigerant
The refrigerant used in each unit is identied on the specication label and manuals of the unit. Hitachi shall not be held
liable for any failure, trouble, malfunction or accident caused by units illegally charged with refrigerants other than the
specied one.
Consequencesofchargingnon-speciedrefrigerant
It may cause mechanical failure, malfunction and other accidents. It may cause operational failure of protection and
safety devices of air conditioners. It may also cause lubrication failure of the sliding part of the compressor due to
deterioration of refrigerant oil.
In particular, hydrocarbon refrigerants (such as propane, R441A, R443A, GF-08, etc.) are not allowed, since these are
combustible and may cause major accidents such as re and explosion in case of improper handling.
Once a non-specied refrigerant has been charged, no further servicing (including draining of refrigerant) shall be
performed, even in case of malfunction. Improper handling of refrigerant may be a cause of re and explosion, and
servicing in such cases may be considered an illegal act.
End clients and costumers shall be informed that servicing is not approved, and the installer who charged the
nonspecied refrigerant shall be asked to x the unit.
Hitachi will accept no responsibility for units that have been charged with non-specied refrigerant once.
1 General information
Product guide
SMGB0135 rev.0 - 06/2020
4
1.4 Product guide
1.4.1 Classication of the units
1.4.1.1 Outdoor unit
Unit type: Outdoor unit (Split air system)
Position-separating hyphen (xed)
Compressor power
R32 refrigerant
Heat pump
Series
RAW -35 R HC
1.4.1.2 Indoor unit
Unit type: YUTAMPO
Position-separating hyphen (xed)
Tank capacity: 190 / 270
R32 refrigerant
Heat pump
Series
TAW - (x) RHC
1 General information
Product guide
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5
1
1.4.2 Product guide
1.4.2.1 Outdoor unit
1~ 230V 50Hz
Unit Code
RAW-35RHC 60374825
1.4.2.2 Indoor unit
( )
1~ 230V 50Hz
Unit Code
TAW-190RHC 70491001
TAW-270RHC 70491014
1 General information
Product guide
SMGB0135 rev.0 - 06/2020
6
1.4.3 Accessory code list
Control accessories
Accessory Name Code Figure
ATW-HCD-01 H-LINK Adapter for Central Devices application
(to work with ATW-(MBS/KNX/TAG)-02) 7E549943
ATW-MBS-02 MODBUS gateway for YUTAKI / YUTAMPO units 7E549924
ATW-KNX-02 KNX interface for YUTAKI / YUTAMPO units 7E549925
ATW-TAG-02 Home automation gateway 70549926
AHP-SMB-01 SmartBox (Hi-Box) 70549919
NEW
ATW-OFC-02
Optional Function Connector
(Inputs and Outputs optional signals) 7E549956
NEW
ATW-CP-05
Active Anode (Cathodic Protection) 7E549954
2. Preparation
2 Preparation
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7
2
Index
2.1 Name of each part...................................................................................................................................8
2.1.1 Tank unit TAW-(190-270)RHC......................................................................................................................... 8
2.1.2 Outdoor unit RAW-35RHC .............................................................................................................................. 8
2.2 Name and function of control panel.........................................................................................................9
2.3 Preparing for operation.......................................................................................................................... 11
2.3.1 Filling up the tank ...........................................................................................................................................11
2.3.2 Turning on the power......................................................................................................................................11
2.4 Setting the language .............................................................................................................................12
2.5 Setting the current time .........................................................................................................................12
2.6 Setting hot water temperature...............................................................................................................13
2.1 Name of each part
2.1.1 Tank unit TAW-(190-270)RHC
Mg Anode (Factory Assembled)
Active Anode (Optional)
Cold water inlet (G 3/4” blue)
Mounting feet (x4)
Electrical box
Heater (1.64kW / 230V)
Thermistor
Liquid refrigerant connection
1/4” Ø6.35 mm (black)
Gas refrigerant connection
3/8” Ø9.52 mm (black)
LCD Controller
Hot water outlet (G 3/4” red)
2.1.2 Outdoor unit RAW-35RHC
Refrigerant pipes
Condensed water outlet
Air inlet (back and left side)
Air outlet
!CAUTION
When heating operation, drain or defrosted water ows out from outdoor unit. Don’t close drain outlet portion in chilly area so as not to
freeze these.
?NOTE
• • Mg-Anode should be changed yearly, it may loose its
function for corrosive protection if exceeds the time frame.
• • It is recommended to replace the Mg-Anode every 1 year
depending on water’s quality.
• • Type number for Mg-Anode is E05269. Use this spare
part reference to order it when replacement is needed.
2 Preparation
Name of each part
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2 Preparation
Name and function of control panel
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2
2.2 Name and function of control panel
OK
LCD screen
OK button
It is used to select the parameters to adjust and to conrm the selected values.
Arrow key
It is used to navigate through the menus and screens.
Run/Stop button
A new yellow light indication has been created on the Run/Stop button in case the YUTAMPO is in OFF state due to
the timer. That helps to dierenciate if the YUTAMPO is in OFF state due to the timer or manual stop (due to the Run/
Stop button) avoiding any confusion about the reason for the stop.
-NO LIGHT: Manual OFF state
-RED: OFF state due to an alarm
-GREEN: ON state
-YELLOW: OFF state due to the timer
Menu button
It is used to display the dierent conguration options of the controller.
Return button
It is used to return to the previous screen.
Favourite button
It is used as a shortcut to execute the preset favourite action (Timer, Night shift or DHW Boost) directly.
2 Preparation
Name and function of control panel
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Time and date
State of DHW heating operation (OFF, Thermo ON/OFF)
DHW control
This part of the screen is used for the indication of the setting temperature for DHW and a throughput icon indicating
the progress of DHW heating operation. It can also show icons indicating the operation of the auxiliary DHW electrical
heater, the activation of timer programs and the operation of DHW boost, in case that these options are enabled.
The setting temperature can be modied using the arrow key when in this view.
The following quick actions are shown when pressing the OK button:
-Timer: Menu for the selection and conguration of simple timer and schedule timer
-Status: Display of information related to current operation conditions
-DHW Boost: Activation of the auxiliary DHW heater and Heat Pump (if operation is possible, to speed up DHW
heating operation
Unit status icons
This part of the screen is used for the display of notication icons related to general status and operation conditions of
the unit, including icons such as Central operation, Night shift or Compressor.
Outdoor temperature / Alarm indication
In normal operation, the outdoor air temperature is displayed next to the home-shaped icon.
In abnormal operation, the alarm icon is indicated together with the corresponding alarm code.
The outdoor air temperature displayed is blinking if the outdoor ambient temperature is out of its operating range
(between -15°C and 37°C) and it required compressor to start. The YUTAMPO unit will force OFF state as a
protective measure for the system.
Available buttons / Installer mode
This part of the screen is used to indicate the buttons of the unit controller which can be used at the moment.
When the Installer mode is enabled, its icon appears at the right end of this bar.
2 Preparation
Preparing for operation
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2
2.3 Preparing for operation
2.3.1 Filling up the tank
Follow the steps below when starting up the unit for the rst time or when it has not been used for an extended period of
time
1 Open the outlet water taps of the DHW, to expel all the air from inside the tank.
2 Turn on all the connected mixer taps (hot water side).
3 Open the inlet valve of the DHW tank in order to ll the tank. If there is a shut-down valve installed in the DHW tank
outlet, open it to allow circulation through the DHW installation.
4 When water begins to ow from the outlet water taps of the DHW installation, close all these taps.
5 Turn o all the connected mixer taps.
6 Inspection
-After lling the tank, check all pipe, heater and the tank for leakage.
-Check operation of the pressure relief valve.
-After heating water for the rst time, check water leakage from the pipe, heater and the tank once more.
!CAUTION
• Fill up the tank completely before turning the power on. Turning the power when the tank is empty will overheat it and damage the unit.
• Check carefully for leaks in the water circuit, connections and circuit elements.
• Check that the water pressure in the circuit is lower than 7 bars.
• Fill the circuit with tap water. Water that conforms to the drinking water regulation in each country must be used. Do not use water
from sources not subject to sanitary control like wells, rivers or lakes, since it may have a high content of impurities, salinity, lime, etc.
• To avoid deposits of scale on the heat exchangers surface it is mandatory to ensure a high water quality with low levels of CaCO3.
• The recommended standard water quality for the DHW circuit is shown in the table below.
Item
DHW space Tendency (1)
Water
supply (2) Corrosion Deposit
of scales
Electrical conductivity (mS/m)
(25 °C) 100~2000
Chlorine Ion (mg CI¯/I) max 250
Sulphate (mg/l) max 250
Combination of chloride and
sulphate (mg/l) max 300
Total Hardness (mg CaCO3/I) 60~150
?NOTE
• (1): The “ ” mark in the table indicates that the concerned item is a factor increasing the tendency of each of the phenomena.
• (2): Water quality must comply with EU directive 98/83 EC.
2.3.2 Turning on the power
Turn on circuit breaker.
When the circuit breakers have been turned on, LCD panel of the tank unit will start to work.
2 Preparation
Setting the language
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2.4 Setting the language
After turning on the power, the LCD panel will show the controller settings screen.
The YUTAMPO controller has 13 available languages.
Available languages
English
Español
Français
Italiano
Deutsch
Slovensko
Português
Dansk
Nederlands
Swedish
Suomi
Eλληvikά
Hrvatski
2.5 Setting the current time
After setting the language the LCD panel will show the date and time screen.
In this screen the date and time can be set in one of the available hour formats (12h (AM/PM) or 24h).
This manual suits for next models
3
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