Hitachi YUTAKI Series - Main Screen

8.4 MAIN SCREEN
Depending on the working mode of the user controller, the main screen is shown in a different way. When the user controller is
working as a master unit controller, a comprehensive view with all the elements is shown, whereas when the user controller is
working as a room thermostat (located in one of the controlled zones), the main screen appears with simplied information.
8.4.1 Comprehensive view









Time and date
The current time/date information is displayed. This
information can be changed on the conguration menu.

Operation mode (Heating/Cooling/Auto)
This icon shows the unit’s mode of operation status. It has to
be edited by pressing the OK button, and it can be switched
between Heating, Cooling and Auto mode. (If available
option).

Control of circuits 1 and 2
It displays the setting temperature calculated for each circuit
and a throughput icon indicating the percentage of the actual
temperature with respect to the setting temperature. It can
also show the ECO mode and timer activation if they are
enabled.
The setting temperature can be modied using the arrows
keys over this view (if water calculation mode is set as x).
Pressing the OK button, the following quick actions are shown:
- Timer: In this menu, simple timer or schedule timer can be
selected and congured.
- OTC: OTC Setting temperature (User can only refer to the
OTC mode and its setting temperature value)
- ECO/Comfort: Selection between ECO and Comfort mode.
- Status: Some working conditions can be consulted.

DHW control
It displays the setting temperature for DHW and a throughput
icon indicating the percentage of the actual temperature
with respect to the setting temperature. It can also show
the operation of the electrical heater of the DHW, the timer
activation and the DHW boost if they are enabled.
The setting temperature can be modied using the arrows
keys over this view.
Pressing the OK button, the following quick actions are shown:
- Timer: In this menu, simple timer or schedule timer can be
selected and congured.
- DHW boost: It activates the DHW heater for an immediate
DHW operation
- Status: Some working conditions can be consulted.
If anti-legionella operation is working, its icon appears below
the setting temperature.

Swimming pool control
It gives information about the swimming pool setting
temperature and displays a throughput icon indicating the
percentage of the actual temperature with respect to the
setting temperature.
The setting temperature can be modied using the arrows
keys over this view.
Pressing the OK button, the following options are shown:
- Timer: In this menu, simple timer or schedule timer can be
selected and congured.
- Status: Some working conditions can be consulted.

Unit status signals
This part of the screen displays all the notication icons that
offer general knowledge on the unit’s situation
Some of these icons can be: Defrost operation, Water pumps,
Compressor/s, Boiler working, Tariff input, Test tun...

Outdoor temperature / Alarm indication
In normal operation, the outdoor temperature is displayed
besides the home icon signal.
In abnormal operation, the alarm icon is indicated with its
corresponding alarm code.

Available buttons / Installer mode
It indicates the buttons of the user controller which can be
used in this moment.
When Installer mode is enabled, its icon appears on the right
side of this view.
UNIT CONTROLLER
PMML0335A rev.1 - 04/2016
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