Hitachi YUTAMPO Series User manual

YUTAMPO SERIES
Indoor unit
YUTAMPO
TAW-(190/270)RHC
Outdoor unit
RAW-35RHC
Service Manual

SMGB0135 rev.0 - 03/2020
I
Contents
1
2
3
4
5
6
7
General information
Preparation
Control functions
Electrical checks of main parts
Servicing
Troubleshooting
Maintenance notes
Contents

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 Classication 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
SMGB0135 rev.0 - 03/2020
IV
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 conguration 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
SMGB0135 rev.0 - 03/2020
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 Classication 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 notication 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 e󰀨ort to o󰀨er 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 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