During Normal Operation - Hitachi Room Unit Operation Manual

choosing the Operating Mode
The Room Unit can operate in three different
modes: Automatic, Manual or Off. To set the
operating mode press either of the
buttons. The screen indicates which mode
is currently active by displaying AUTO, MAN
or OFF.
• AUTOMATIC ( ) mode sets the Room
Unit to follow the built-in temperature
program (default
Operating the Room Unit in this mode is
the best way to maintain a high level of
temperature comfort whilst maximising
your energy savings.
• MANUAL ( ) mode allows the Room
Unit to be used without following the built-
in temperature programme. The setpoint
can be adjusted from 5°C to 35°C by using
the or buttons. The Room Unit will
continue to maintain this temperature until
another operating mode or temperature is
selected.
• OFF ( ) mode sets the Room Unit to
control to a minimum temperature setting of
5°C (default) that acts as a frost protection
measure for your home.

during Normal Operation

• Temperature Override
During normal operation (AUTO (
or MAN ( ) mode) the programmed
temperature can be adjusted manually
by pressing the
button. The 'target' temperature will be
displayed and flash for 5 seconds - during
this time the
used to modify the set value. Note: This
temperature override is cancelled at the
next programmed temperature change.
• Temperature Enquiry
When the Room Unit is configured to control
the room temperature directly it will display
the current room temperature. To review
the programmed 'target' temperature (the
temperature which the Room Unit is trying
to maintain) press the button. This 'target'
temperature value will be displayed flashing
for 5 seconds before returning to the current
room temperature value.
, or
or personalised).
or buttons or the
or buttons can be
Operating the Room Unit
Using the special Functions
• hOLIdAY Function
The holiday function allows you to set a
constant temperature (default = 10°C)
for a specified number of days (from 1 -
99 days). This lets you save energy and
related costs when you are away from
home, but resumes normal operation on
the day of your return.
To set the holiday function:
a. Ensure the Room Unit is running in
AUTO (
modes.
b. Press the holiday
display the holiday days counter and
temperature setting, along with the
holiday indicator
c. Press the
the holiday time (1 - 99 days) and press
the green
d. Press the
holiday temperature (5°C - 35°C) and
press the green
The Room Unit will now control to the new
temperature for the set number of days
that your home is vacant. At midnight the
holiday counter will be reduced by one until
the selected number of days have passed.
The Room Unit will then return to normal
)
operation as set by the AUTO (
MAN ( ) mode. To cancel the HOLIDAY
function or to exit the function at any time
press the button a second time.
Adjusting the Time
To adjust only the time during normal operation
use the or
and press the green
confirm any changes.
) or MAN ( ) operating
button
.
or time buttons to set
button to confirm.
or buttons to set the
button to confirm.
buttons to adjust the time
button again to
5
to
) or